WO2008102999A1 - Device for preventing dew condensation of heat exchange type ventilator and control method thereof - Google Patents

Device for preventing dew condensation of heat exchange type ventilator and control method thereof Download PDF

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Publication number
WO2008102999A1
WO2008102999A1 PCT/KR2008/001029 KR2008001029W WO2008102999A1 WO 2008102999 A1 WO2008102999 A1 WO 2008102999A1 KR 2008001029 W KR2008001029 W KR 2008001029W WO 2008102999 A1 WO2008102999 A1 WO 2008102999A1
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WO
WIPO (PCT)
Prior art keywords
temperature
dew condensation
indoor
humidity
sensor
Prior art date
Application number
PCT/KR2008/001029
Other languages
French (fr)
Inventor
Ki Seong Lee
Original Assignee
Kyungdong Everon Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyungdong Everon Co., Ltd. filed Critical Kyungdong Everon Co., Ltd.
Publication of WO2008102999A1 publication Critical patent/WO2008102999A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to a device for preventing dew condensation in a heat exchange type ventilator, and more particularly to a device for preventing dew condensation in a heat exchange type ventilator and a control method thereof, in which a temperature sensor and a humidity sensor measuring the indoor and outdoor temperature and humidity are mounted in the heat exchange type ventilator so as to measure the value of the indoor and outdoor temperature and humidity, calculate a temperature of indoor dew condensation based on the measured value of the indoor and outdoor temperature and humidity, compare the calculated temperature of indoor dew condensation with an outdoor temperature, and control an operation of an air supply fan and an exhaust fan, so that the dew condensation in the ventilator and the indoor space can be prevented.
  • Background Art
  • a heat exchange type ventilator transfers the heat included in the exhausted air to the supplied air so as to raise or lower the temperature of the supply air similar to that of the exhaust air, so that the decrease in cooling/heating costs is achieved.
  • the ventilator system has a pair of air supply ducts and a pair of exhaust ducts on both sides thereof, and the air supply duct and the exhaust duct include an air supply fan and an exhaust fan therein, respectively.
  • the ventilator includes a heat exchanger in which the air supply duct and the exhaust duct are not separated, but the inside is bisected so that the air supplied through the air supply fan and the air exhausted through the exhaust fan are heat exchanged in a non-mixed state, so as to be temperature similar to each other.
  • the above heat exchange type ventilator includes only a temperature sensor therein and uses three ways for ventilation: intermittently operating the air supply fan; or com- pulsorily interrupting the air supply fan and operating only the exhaust fan when the temperature of the inside ventilator is equal to or lower than a predetermined temperature.
  • the conventional heat exchange type ventilator having only the temperature sensor controls the air to be supplied to the indoor space and exhausted to the outside considering only a condition of the indoor temperature, so that dew condensation generating the dew in the ventilator depending on the humidity of the vapor quantity in the air has occurred.
  • the dew condensation causes erosion of the ventilator and shortening of the life of the ventilator, so that a replacement period of equipments is shortened, thereby increasing repair and maintenance costs.
  • the present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a device for preventing dew condensation in a heat exchange type ventilator and a control method thereof, in which a temperature sensor and a humidity sensor measuring the indoor and outdoor temperature and humidity are mounted on an air supply duct and an exhaust duct of the heat exchange type ventilator, so as to measure the indoor and outdoor temperature and humidity in real time, calculate the temperature of dew condensation using the measured temperature and humidity, and control the air supply fan and the exhaust fan according to a calculated temperature of dew condensation, thereby preventing dew condensation.
  • a temperature sensor and a humidity sensor measuring the indoor and outdoor temperature and humidity are mounted on an air supply duct and an exhaust duct of the heat exchange type ventilator, so as to measure the indoor and outdoor temperature and humidity in real time, calculate the temperature of dew condensation using the measured temperature and humidity, and control the air supply fan and the exhaust fan according to a calculated temperature of dew condensation, thereby preventing dew condensation.
  • a device for preventing dew condensation in a heat exchange type ventilator including: a heat exchanger having an air supply duct and an exhaust duct on both sides, and a predetermined space inside the heat exchanger, the predetermined space in the heat exchanger being bisected by a compartment wall, so as to form an air supply path and an exhaust path; an air supply fan mounted inside the air supply duct so as to compulsorily supply air and an exhaust fan mounted inside the exhaust duct so as to compulsorily exhaust air; a first temperature sensor for measuring an outdoor temperature and a first humidity sensor for measuring an outdoor humidity, the first temperature sensor and the first humidity sensor being mounted on an inlet inside the air supply duct through which outdoor air is introduced; a second temperature sensor for measuring an indoor temperature and a second humidity sensor for measuring an indoor humidity, the second temperature sensor and the second humidity sensor being mounted on an inlet inside the exhaust duct through which indoor air is introduced; a dew condensation temperature calculating unit receiving a temperature value measured by the first temperature
  • it is another object of the present invention to provide a method for controlling a device for preventing dew condensation in a heat exchange type ventilator including the steps of: detecting an indoor and outdoor temperature and humidity in which the indoor and outdoor temperature and humidity are measured by a first temperature sensor, a second temperature sensor, a first humidity sensor, and a second humidity sensor mounted in an air supply duct and an exhaust duct of a heat exchange type ventilator; calculating a temperature of indoor dew condensation in which the temperature of the indoor dew condensation is calculated by a temperature value measured by the first temperature sensor and the second temperature sensor and a humidity value measured by the first humidity sensor and the second humidity sensor; comparing the temperature of the indoor dew condensation in which the temperature of the indoor dew condensation calculated in the step of calculating the temperature of the indoor dew condensation is compared with the outdoor temperature; and controlling an air supply fan and an exhaust fan in which the air supply fan and the exhaust fan are controlled according to a result obtained in the step of the temperature of the indoor dew condensation.
  • the present invention measures the indoor and outdoor temperature and the humidity, calculates the temperature of dew condensation using the measured temperature and humidity, and compares the calculated temperature of dew condensation with the outdoor temperature, so as to control the air supply fan and the exhaust fan, thereby preventing dew condensation in the ventilator.
  • FIG. 1 is a cross-sectional view schematically illustrating a device for preventing dew condensation in a heat exchange type ventilator according to a present invention
  • FIG. 2 is a diagram illustrating a controller of a device for preventing dew condensation in a heat exchange type ventilator according to a present invention.
  • FIG. 3 is a flowchart illustrating a method for controlling a device for preventing dew condensation in a heat exchange type ventilator according to a present invention.
  • FIG. 1 is a cross-sectional view schematically illustrating a device for preventing dew condensation in a heat exchange type ventilator according to a present invention
  • FIG. 2 is a diagram illustrating a controller of a device for preventing dew condensation in a heat exchange type ventilator according to a present invention.
  • a device for preventing dew condensation in a heat exchange type ventilator includes a heat exchanger 10 having an air supply duct 11 and an exhaust duct 12 on both sides thereof, respectively. Further, the heat exchanger 10 has a predetermined space therein bisected by a compartment wall 13 so as to form an air supply path and an exhaust path, so that the supply air and the exhaust air passing through the air supply path and the exhaust path are heat exchanged through the compartment wall 13.
  • the air supply duct 11 includes an air supply fan 20 compulsorily supplying the outdoor air to the indoor space and the exhaust duct 12 includes an exhaust fan 30 compulsorily exhausting the indoor air to the outside.
  • a first temperature sensor 40 for measuring the temperature of the outdoor air supplied from the outdoor and a first humidity sensor 50 for measuring the humidity of the outdoor air supplied from the outdoor are formed on an outdoor air inlet inside the air supply duct 11. Further, a second temperature sensor 60 for measuring the temperature of the indoor air and a humidity sensor 70 for measuring the humidity of the indoor air are formed in an indoor air inlet inside the exhaust duct 12.
  • the device includes a dew condensation temperature calculating unit 80 for receiving the temperature value measured by the first temperature sensor 40 and the second temperature sensor 60, and the humidity value measured by the first humidity sensor 50 and the second humidity sensor 70 so as to calculate the temperature of the indoor dew condensation, and a controlling unit 90 for comparing the dew con densation temperature calculated in the dew condensation temperature calculating unit 80 with the outdoor temperature so as to control the air supply fan and the exhaust fan.
  • the controlling unit 90 transmits a normal control signal to the air supply fan 20 and the exhaust fan 30 according to an instruction of a user so that the air supply fan 20 and the exhaust fan 30 is on/off in a predetermined time period so as to ventilate the indoor and outdoor air.
  • the controlling unit 90 transmits an abnormal control signal to the air supply fan 20 regardless of the instruction from the user, and the air supply fan 20 is compulsorily interrupted or intermittently operated.
  • the controlling unit 90 transmits the normal control signal to the exhaust fan 30 according to the instruction of the user and the exhaust fan 30 is on/off as necessary to be operated.
  • a step S 1 of detecting the indoor and outdoor temperature and humidity is performed in which the indoor and outdoor temperature and humidity are accurately measured by the first and second temperature sensors 40 and 60 and the first and second humidity sensors 50 and 70 mounted in the air supply duct and the exhaust duct.
  • the dew condensation temperature is variable depending on the temperature and humidity so that the accurate detection of the indoor and outdoor temperature and the humidity is required. Further, the temperature and the humidity are not always constant, either, so that the consecutive measurement of the temperature and the humidity is required in a predetermined time slot.
  • a step S2 of calculating the temperature of the indoor dew condensation is performed in which the temperature of the indoor dew condensation is calculated by the temperature value measured by the first and second temperature sensors 40 and 60 and the humidity value measured by the first and second humidity sensors 50 and 70.
  • a step S3 of comparing the temperature of the indoor dew condensation is performed, in which the temperature of the indoor dew condensation, calculated in the step S2 of calculating the temperature of the indoor dew condensation, is compared with the outdoor temperature in the controlling unit 90.
  • the step S 1 of detecting the indoor and outdoor temperature and humidity is repeated.
  • a step S4 of controlling the air supply fan and the exhaust fan is preformed in which the controlling unit 90 transmits the abnormal signal for interrupting or intermittently operating the air supply fan, and transmits the normal control signal to the exhaust fan according to the instruction from the user.
  • the present invention can prevent dew condensation which may occur due to the difference of the temperature and the humidity between the indoor air and the outdoor air.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Disclosed is a device for preventing dew condensation in a heat exchange type ventilator and a control method thereof, which measures an indoor and outdoor temperature and humidity in the heat exchange type ventilator and calculates a dew condensation temperature using them, and then the ventilator is automatically operated when the indoor temperature reaches the dew con¬ densation temperature, so as to control the indoor temperature, thereby preventing dew con¬ densation. The device includes: a heat exchanger; an air supply fan and an exhaust fan; a first temperature sensor and a first humidity sensor; a second temperature sensor and a second humidity sensor,; a dew condensation temperature calculating unit; and a controlling unit.

Description

Description
DEVICE FOR PREVENTING DEW CONDENSATION OF HEAT EXCHANGE TYPE VENTILATOR AND CONTROL METHOD
THEREOF
Technical Field
[1] The present invention relates to a device for preventing dew condensation in a heat exchange type ventilator, and more particularly to a device for preventing dew condensation in a heat exchange type ventilator and a control method thereof, in which a temperature sensor and a humidity sensor measuring the indoor and outdoor temperature and humidity are mounted in the heat exchange type ventilator so as to measure the value of the indoor and outdoor temperature and humidity, calculate a temperature of indoor dew condensation based on the measured value of the indoor and outdoor temperature and humidity, compare the calculated temperature of indoor dew condensation with an outdoor temperature, and control an operation of an air supply fan and an exhaust fan, so that the dew condensation in the ventilator and the indoor space can be prevented. Background Art
[2] In general, a heat exchange type ventilator transfers the heat included in the exhausted air to the supplied air so as to raise or lower the temperature of the supply air similar to that of the exhaust air, so that the decrease in cooling/heating costs is achieved. The ventilator system has a pair of air supply ducts and a pair of exhaust ducts on both sides thereof, and the air supply duct and the exhaust duct include an air supply fan and an exhaust fan therein, respectively.
[3] Further, the ventilator includes a heat exchanger in which the air supply duct and the exhaust duct are not separated, but the inside is bisected so that the air supplied through the air supply fan and the air exhausted through the exhaust fan are heat exchanged in a non-mixed state, so as to be temperature similar to each other.
[4] The above heat exchange type ventilator includes only a temperature sensor therein and uses three ways for ventilation: intermittently operating the air supply fan; or com- pulsorily interrupting the air supply fan and operating only the exhaust fan when the temperature of the inside ventilator is equal to or lower than a predetermined temperature.
[5] However, the conventional heat exchange type ventilator having only the temperature sensor controls the air to be supplied to the indoor space and exhausted to the outside considering only a condition of the indoor temperature, so that dew condensation generating the dew in the ventilator depending on the humidity of the vapor quantity in the air has occurred. The dew condensation causes erosion of the ventilator and shortening of the life of the ventilator, so that a replacement period of equipments is shortened, thereby increasing repair and maintenance costs.
[6] Further, the erosion of the ventilator causes the heat loss in the heat exchanger so that the energy is not efficiently utilized. Disclosure of Invention Technical Problem
[7] Therefore, the present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a device for preventing dew condensation in a heat exchange type ventilator and a control method thereof, in which a temperature sensor and a humidity sensor measuring the indoor and outdoor temperature and humidity are mounted on an air supply duct and an exhaust duct of the heat exchange type ventilator, so as to measure the indoor and outdoor temperature and humidity in real time, calculate the temperature of dew condensation using the measured temperature and humidity, and control the air supply fan and the exhaust fan according to a calculated temperature of dew condensation, thereby preventing dew condensation. Technical Solution
[8] To accomplish the above objects, there is provided a device for preventing dew condensation in a heat exchange type ventilator, including: a heat exchanger having an air supply duct and an exhaust duct on both sides, and a predetermined space inside the heat exchanger, the predetermined space in the heat exchanger being bisected by a compartment wall, so as to form an air supply path and an exhaust path; an air supply fan mounted inside the air supply duct so as to compulsorily supply air and an exhaust fan mounted inside the exhaust duct so as to compulsorily exhaust air; a first temperature sensor for measuring an outdoor temperature and a first humidity sensor for measuring an outdoor humidity, the first temperature sensor and the first humidity sensor being mounted on an inlet inside the air supply duct through which outdoor air is introduced; a second temperature sensor for measuring an indoor temperature and a second humidity sensor for measuring an indoor humidity, the second temperature sensor and the second humidity sensor being mounted on an inlet inside the exhaust duct through which indoor air is introduced; a dew condensation temperature calculating unit receiving a temperature value measured by the first temperature sensor and the second temperature sensor and a humidity value measured by the first humidity sensor and the second humidity sensor, so as to calculate a temperature of indoor dew condensation; and a controlling unit for comparing the dew condensation temperature calculated in the dew condensation temperature calculating unit with the outdoor temperature, so as to control the air supply fan and the exhaust fan.
[9] Further, it is another object of the present invention to provide a method for controlling a device for preventing dew condensation in a heat exchange type ventilator, including the steps of: detecting an indoor and outdoor temperature and humidity in which the indoor and outdoor temperature and humidity are measured by a first temperature sensor, a second temperature sensor, a first humidity sensor, and a second humidity sensor mounted in an air supply duct and an exhaust duct of a heat exchange type ventilator; calculating a temperature of indoor dew condensation in which the temperature of the indoor dew condensation is calculated by a temperature value measured by the first temperature sensor and the second temperature sensor and a humidity value measured by the first humidity sensor and the second humidity sensor; comparing the temperature of the indoor dew condensation in which the temperature of the indoor dew condensation calculated in the step of calculating the temperature of the indoor dew condensation is compared with the outdoor temperature; and controlling an air supply fan and an exhaust fan in which the air supply fan and the exhaust fan are controlled according to a result obtained in the step of the temperature of the indoor dew condensation. Advantageous Effects
[10] As described above, the present invention measures the indoor and outdoor temperature and the humidity, calculates the temperature of dew condensation using the measured temperature and humidity, and compares the calculated temperature of dew condensation with the outdoor temperature, so as to control the air supply fan and the exhaust fan, thereby preventing dew condensation in the ventilator.
[11] Further, the erosion of the ventilator is prevented so as to secure a long life of the equipment, so that the period for replacement of the equipment is extended, thereby decreasing costs. Brief Description of the Drawings
[12] FIG. 1 is a cross-sectional view schematically illustrating a device for preventing dew condensation in a heat exchange type ventilator according to a present invention;
[13] FIG. 2 is a diagram illustrating a controller of a device for preventing dew condensation in a heat exchange type ventilator according to a present invention; and
[14] FIG. 3 is a flowchart illustrating a method for controlling a device for preventing dew condensation in a heat exchange type ventilator according to a present invention. Mode for the Invention
[15] Hereinafter, an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.
[16] FIG. 1 is a cross-sectional view schematically illustrating a device for preventing dew condensation in a heat exchange type ventilator according to a present invention, and FIG. 2 is a diagram illustrating a controller of a device for preventing dew condensation in a heat exchange type ventilator according to a present invention.
[17] Referring to FIGs. 1 and 2, a device for preventing dew condensation in a heat exchange type ventilator according to a present invention includes a heat exchanger 10 having an air supply duct 11 and an exhaust duct 12 on both sides thereof, respectively. Further, the heat exchanger 10 has a predetermined space therein bisected by a compartment wall 13 so as to form an air supply path and an exhaust path, so that the supply air and the exhaust air passing through the air supply path and the exhaust path are heat exchanged through the compartment wall 13.
[18] The air supply duct 11 includes an air supply fan 20 compulsorily supplying the outdoor air to the indoor space and the exhaust duct 12 includes an exhaust fan 30 compulsorily exhausting the indoor air to the outside.
[19] A first temperature sensor 40 for measuring the temperature of the outdoor air supplied from the outdoor and a first humidity sensor 50 for measuring the humidity of the outdoor air supplied from the outdoor are formed on an outdoor air inlet inside the air supply duct 11. Further, a second temperature sensor 60 for measuring the temperature of the indoor air and a humidity sensor 70 for measuring the humidity of the indoor air are formed in an indoor air inlet inside the exhaust duct 12.
[20] Further, the device includes a dew condensation temperature calculating unit 80 for receiving the temperature value measured by the first temperature sensor 40 and the second temperature sensor 60, and the humidity value measured by the first humidity sensor 50 and the second humidity sensor 70 so as to calculate the temperature of the indoor dew condensation, and a controlling unit 90 for comparing the dew con densation temperature calculated in the dew condensation temperature calculating unit 80 with the outdoor temperature so as to control the air supply fan and the exhaust fan.
[21] That is, when the temperature of the indoor dew condensation calculated by the temperature value measured by the first temperature sensor 40 and the second temperature sensor 60 and the humidity value measured by the first humidity sensor 50 and the second humidity sensor 70 is equal to or lower than the outdoor temperature, there is no chance for dew condensation to occur in the indoor space. Therefore, the controlling unit 90 transmits a normal control signal to the air supply fan 20 and the exhaust fan 30 according to an instruction of a user so that the air supply fan 20 and the exhaust fan 30 is on/off in a predetermined time period so as to ventilate the indoor and outdoor air.
[22] However, when the calculated temperature of the indoor dew condensation is higher than the outdoor temperature and the outdoor air with the temperature lower than that of the indoor dew condensation is supplied to the indoor space, the temperature of the indoor space is lowered so as to cause dew condensation in the indoor space. In this case, the controlling unit 90 transmits an abnormal control signal to the air supply fan 20 regardless of the instruction from the user, and the air supply fan 20 is compulsorily interrupted or intermittently operated.
[23] In the meantime, the controlling unit 90 transmits the normal control signal to the exhaust fan 30 according to the instruction of the user and the exhaust fan 30 is on/off as necessary to be operated.
[24] As such, by calculating the temperature of the indoor dew condensation using the measured temperature value and humidity value of the indoor and outdoor and comparing the calculated temperature of the indoor dew condensation with the outdoor temperature so as to control the air supply fan and the exhaust fan, the occurrence of dew condensation in the ventilator due to the arrive of the indoor temperature at the temperature of the indoor dew condensation can be automatically prevented.
[25] Hereinafter, a method for controlling a device for preventing dew condensation in a heat exchange type ventilator according to a present invention will be described with reference to FIG. 3.
[26] First, a step S 1 of detecting the indoor and outdoor temperature and humidity is performed in which the indoor and outdoor temperature and humidity are accurately measured by the first and second temperature sensors 40 and 60 and the first and second humidity sensors 50 and 70 mounted in the air supply duct and the exhaust duct. The dew condensation temperature is variable depending on the temperature and humidity so that the accurate detection of the indoor and outdoor temperature and the humidity is required. Further, the temperature and the humidity are not always constant, either, so that the consecutive measurement of the temperature and the humidity is required in a predetermined time slot.
[27] Next, a step S2 of calculating the temperature of the indoor dew condensation is performed in which the temperature of the indoor dew condensation is calculated by the temperature value measured by the first and second temperature sensors 40 and 60 and the humidity value measured by the first and second humidity sensors 50 and 70.
[28] The method for calculating the temperature of dew condensation by the measured temperature value and humidity value of the air is common, of which the detail description is omitted.
[29] Subsequently, a step S3 of comparing the temperature of the indoor dew condensation is performed, in which the temperature of the indoor dew condensation, calculated in the step S2 of calculating the temperature of the indoor dew condensation, is compared with the outdoor temperature in the controlling unit 90. When the temperature of the indoor dew condensation is determined to be equal to or lower than the outdoor temperature, the step S 1 of detecting the indoor and outdoor temperature and humidity is repeated.
[30] In the meantime, when the temperature of the indoor dew condensation is determined to be higher than the outdoor temperature in the step S3 of comparing the temperature of the indoor dew condensation, a step S4 of controlling the air supply fan and the exhaust fan is preformed in which the controlling unit 90 transmits the abnormal signal for interrupting or intermittently operating the air supply fan, and transmits the normal control signal to the exhaust fan according to the instruction from the user.
[31] While this invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiment and the drawings, but, on the contrary, it is intended to cover various modifications and variations within the spirit and scope of the appended claims Industrial Applicability
[32] As described above, the present invention can prevent dew condensation which may occur due to the difference of the temperature and the humidity between the indoor air and the outdoor air.

Claims

Claims
[1] A device for preventing dew condensation in a heat exchange type ventilator, comprising: a heat exchanger having an air supply duct and an exhaust duct on both sides, and a predetermined space inside the heat exchanger, the predetermined space in the heat exchanger being bisected by a compartment wall, so as to form an air supply path and an exhaust path; an air supply fan mounted inside the air supply duct so as to compulsorily supply air and an exhaust fan mounted inside the exhaust duct so as to compulsorily exhaust air; a first temperature sensor for measuring an outdoor temperature and a first humidity sensor for measuring an outdoor humidity, the first temperature sensor and the first humidity sensor being mounted on an inlet inside the air supply duct through which outdoor air is introduced; a second temperature sensor for measuring an indoor temperature and a second humidity sensor for measuring an indoor humidity, the second temperature sensor and the second humidity sensor being mounted on an inlet inside the exhaust duct through which indoor air is introduced; a dew condensation temperature calculating unit receiving a temperature value measured by the first temperature sensor and the second temperature sensor and a humidity value measured by the first humidity sensor and the second humidity sensor, so as to calculate a temperature of indoor dew condensation; and a controlling unit for comparing the dew condensation temperature calculated in the dew condensation temperature calculating unit with the outdoor temperature, so as to control the air supply fan and the exhaust fan.
[2] A method for controlling a device for preventing dew condensation in a heat exchange type ventilator, comprising the steps of: detecting an indoor and outdoor temperature and humidity in which the indoor and outdoor temperature and humidity are measured by a first temperature sensor, a second temperature sensor, a first humidity sensor, and a second humidity sensor mounted in an air supply duct and an exhaust duct of a heat exchange type ventilator; calculating a temperature of indoor dew condensation in which the temperature of the indoor dew condensation is calculated by a temperature value measured by the first temperature sensor and the second temperature sensor and a humidity value measured by the first humidity sensor and the second humidity sensor; comparing the temperature of the indoor dew condensation in which the temperature of the indoor dew condensation calculated in the step of calculating the temperature of the indoor dew condensation is compared with the outdoor temperature; and controlling an air supply fan and an exhaust fan in which the air supply fan and the exhaust fan are controlled according to a result obtained in the step of comparing the temperature of the indoor dew condensation.
PCT/KR2008/001029 2007-02-22 2008-02-21 Device for preventing dew condensation of heat exchange type ventilator and control method thereof WO2008102999A1 (en)

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KR10-2007-0017743 2007-02-22
KR20070017743 2007-02-22

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WO2008102999A1 true WO2008102999A1 (en) 2008-08-28

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EP3601894A4 (en) * 2017-03-31 2020-12-23 FläktGroup Sweden AB Method to counteract build-up of frost on a heat reclaimer arranged in an air treatment unit
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US11175081B1 (en) 2018-04-27 2021-11-16 Delta T, Llc Condensation control system with radiant heating and related method
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KR20040013678A (en) * 2002-08-08 2004-02-14 현대산업개발 주식회사 Ventilation Apparatus Using Heat Exchange by Double Duct
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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2004595C2 (en) * 2010-04-22 2011-10-25 Calltec S P I HEAT EXCHANGER.
US10309663B1 (en) 2013-03-15 2019-06-04 Delta T, Llc Condensation control system and related method
US20170159963A1 (en) * 2014-01-31 2017-06-08 Daikin Industries, Ltd. Ventilation device
US9797620B2 (en) * 2014-01-31 2017-10-24 Daikin Industries, Ltd. Ventilation device
US9856883B1 (en) 2014-04-14 2018-01-02 Delta T Corporation Predictive condensation control system and related method
CN105509163A (en) * 2014-09-22 2016-04-20 建准电机工业股份有限公司 Airflow exchange device with indoor and outdoor temperature difference adjusting function
US10852010B2 (en) 2015-07-21 2020-12-01 Samsung Electronics Co., Ltd. Air conditioner and control method thereof
US11175052B2 (en) 2015-07-21 2021-11-16 Samsung Electronics Co., Ltd. Air conditioner and control method thereof
EP3372907A3 (en) * 2015-07-21 2018-11-28 Samsung Electronics Co., Ltd. Air conditioner and control method thereof
CN108507138A (en) * 2015-07-21 2018-09-07 三星电子株式会社 Air-conditioning and its control method
CN107003027A (en) * 2015-07-21 2017-08-01 三星电子株式会社 Air-conditioning and its control method
US11193677B2 (en) 2015-07-21 2021-12-07 Samsung Electronics Co., Ltd. Air conditioner and control method thereof
CN108679805A (en) * 2015-07-21 2018-10-19 三星电子株式会社 Air-conditioning and its control method
CN108679805B (en) * 2015-07-21 2021-11-16 三星电子株式会社 Air conditioner and control method thereof
EP3601894A4 (en) * 2017-03-31 2020-12-23 FläktGroup Sweden AB Method to counteract build-up of frost on a heat reclaimer arranged in an air treatment unit
US11175081B1 (en) 2018-04-27 2021-11-16 Delta T, Llc Condensation control system with radiant heating and related method
DE102020117659A1 (en) * 2019-12-20 2021-07-08 Stiebel Eltron Gmbh & Co. Kg Ventilation device and method for controlling a ventilation device
WO2021121945A1 (en) * 2019-12-20 2021-06-24 Stiebel Eltron Gmbh & Co.Kg Ventilation apparatus and method for controlling a ventilation apparatus
CN114846279A (en) * 2019-12-20 2022-08-02 斯德龙有限两合公司 Ventilation device and method for adjusting a ventilation device
CN114846279B (en) * 2019-12-20 2024-04-26 斯德龙有限两合公司 Ventilation device and method for adjusting a ventilation device
WO2022248003A1 (en) * 2021-05-27 2022-12-01 Udlejer Hans Jørgen Christensen Method for ventilating a space, and ventilation system

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