WO2015084049A1 - 드라이룸의 노점온도 관리장치 및 방법 - Google Patents

드라이룸의 노점온도 관리장치 및 방법 Download PDF

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Publication number
WO2015084049A1
WO2015084049A1 PCT/KR2014/011761 KR2014011761W WO2015084049A1 WO 2015084049 A1 WO2015084049 A1 WO 2015084049A1 KR 2014011761 W KR2014011761 W KR 2014011761W WO 2015084049 A1 WO2015084049 A1 WO 2015084049A1
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Prior art keywords
air
dew point
point temperature
dehumidification rotor
dry room
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PCT/KR2014/011761
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English (en)
French (fr)
Korean (ko)
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김한일
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김한일
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Publication of WO2015084049A1 publication Critical patent/WO2015084049A1/ko

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    • 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
    • F24F11/0008—Control or safety arrangements for air-humidification
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/30—Controlling by gas-analysis apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas

Definitions

  • the present invention relates to a device for managing dew point temperature in a dry room and a method of managing the same.
  • the dew point temperature in a dry room is controlled by controlling the air volume of a circulation fan supplied to the dry room through a dehumidification rotor. It relates to a dew point temperature management device and a management method of a dry room to be managed to a predetermined target value.
  • the manufacturing process of the lithium ion battery should be performed in a dry room having an atmosphere of relative humidity less than 2%. As such, it is very important to maintain and manage the dew point temperature in the dry room at a target temperature suitable for the characteristics of the work.
  • Korean Patent No. 1064175 operates a regeneration heater at a regeneration temperature corresponding to an absolute temperature of air supplied to a dehumidifying rotor, and compares a regeneration temperature of a regeneration heater by comparing a dew point temperature measurement value with a reference value. Adjust it.
  • the regenerative heater is controlled to control the temperature of the heated air to manage the dew point temperature in the dry room.
  • this is a problem in that the flow rate through the dehumidification rotor must be kept at maximum by fully operating the circulation fan in order to maintain a constant amount of air supplied to the dry room, and the ideal regeneration temperature of zeolite or molar quartz resin, which is the material of the dehumidification rotor, is maintained.
  • the stability of the dew point temperature according to the load fluctuation because it is controlled out of 160 ⁇ 180 °C. This causes a problem that energy is wasted because the maximum flow rate must be maintained even when the air introduced from the outside is relatively dry.
  • Korean Laid-Open Patent Publication No. 2011-0040660 detects the moisture content of air dehumidified by a desiccant rotor (dehumidification rotor) and provides an external air of the regeneration side provided to the desiccator according to the moisture content.
  • Techniques for controlling the flow rate are disclosed.
  • the flow rate of the regeneration side is adjusted not the flow rate of the treatment side according to the moisture content of the treatment side of the desiccant rotor (dehumidification rotor), and the regeneration side is not considered without considering the absolute humidity of the air supplied from the shear heat exchanger.
  • the flow rate of the regenerative side is controlled only by the dew point temperature even when the absolute humidity of the air supplied to the desiccator is very low. It is not.
  • the present invention has been proposed to solve the above problems of the prior art, in consideration of the absolute humidity of the air flowing into the dehumidification rotor and the air supplied from the dehumidification rotor to accurately and efficiently manage the dew point temperature of the dry room.
  • the purpose of the present invention is to provide a dew point temperature control device and a management method of a dry room.
  • Another object of the present invention is to provide a dew point temperature management apparatus and a management method of a dry room for adjusting the air volume of the air supplied from the circulation fan to the dehumidification rotor instead of the air regenerated from the dehumidification rotor.
  • the present invention is the dew point temperature management device of the dry room to reduce the energy consumption by lowering the amount of air (absolute humidity) of the air sucked from the outside when the dry air flow rate of the circulation fan and the shear heat exchanger, and its Another purpose is to provide a management method.
  • a front end heat exchanger for exchanging and cooling the air sucked from the outside, a dehumidification rotor for dehumidifying the air cooled in the front end heat exchanger in a first region, and a post heat exchanger for exchanging and cooling the air passing through the dehumidification rotor; And a circulation fan that sucks external air to the shear heat exchanger and provides the cooling air to the dehumidification rotor so that the air dehumidified through the dehumidification rotor is supplied to the dry room through the rear heat exchanger and the circulation fan.
  • a regeneration heater unit for heating and regenerating the air branched from the air provided to the dehumidification rotor and passing through the second region of the dehumidification rotor; and exhausting the air regenerated by the regeneration heater unit and passing through the third region of the dehumidification rotor.
  • a dew point temperature management method in a dew point temperature control apparatus of a dry room including an exhaust fan, the dew point temperature sensor in the dry A first step of measuring dew point temperature of the room; A second step of measuring an absolute humidity of air supplied from the humidity sensor to the shear heat exchanger; A third step of controlling, by a controller, a supply air volume of the circulation fan provided to the dehumidifying rotor to maintain the measured dew point temperature at a predetermined target value; And a fourth step of reducing the operation of the shear heat exchanger until the measured absolute humidity reaches a predetermined reference humidity when the supply air volume of the circulation fan is at a minimum in the control unit. It includes.
  • control unit further comprises the step of adjusting the exhaust air volume in the exhaust fan so that the measured dew point temperature is maintained at the target value.
  • the control unit stops the operation of the shear heat exchanger.
  • the control unit reduces the amount of air supplied to the circulation fan.
  • a front end heat exchanger for exchanging and cooling the air sucked from the outside, a dehumidification rotor for dehumidifying the air cooled in the front end heat exchanger in a first region, and a post heat exchanger for exchanging and cooling the air passing through the dehumidification rotor; And a circulation fan that sucks external air to the shear heat exchanger and provides the cooling air to the dehumidification rotor so that the air dehumidified through the dehumidification rotor is supplied to the dry room through the rear heat exchanger and the circulation fan.
  • a regeneration heater unit for heating and regenerating the air passing through the second region of the dehumidification rotor among the air provided to the dehumidification rotor, and an exhaust fan for exhausting air regenerated by the regeneration heater unit and passed through the third region of the dehumidification rotor.
  • the dew point temperature management apparatus of a dry room comprising: a humidity sensor for measuring the absolute humidity of the air sucked into the shear heat exchange unit .; A dew point temperature sensor for measuring a dew point temperature in the dry room; And adjusting the supply air flow rate of the circulation fan supplied to the dehumidification rotor so that the dew point temperature measured by the dew point temperature sensor is maintained at a predetermined target value.
  • the exhaust fan further comprises an exhaust fan for exhausting the air passing through the third region of the dehumidifying rotor to the outside, the control unit is the exhaust so that the measured dew point temperature is maintained at the predetermined target value Adjust the exhaust air volume of the fan.
  • control unit adjusts the exhaust air volume of the exhaust fan in response to the set supply air volume of the circulation fan.
  • control unit stops the operation of the shear heat exchanger when the measured absolute humidity is less than a lower limit of a predetermined reference humidity in a state where the supply air volume of the circulation fan is at a minimum.
  • control unit when the measured absolute humidity is less than the lower limit of the predetermined reference humidity, while maintaining the dew point temperature to the target value, the control unit reduces the amount of supply air to the circulation fan.
  • the air volume of the air regenerated in the dehumidification rotor is not only controlled, but the air temperature before and after passing through the dehumidification rotor and the temperature of the air in the regeneration heater are regarded as a dehumidification rotor.
  • the dew point temperature is controlled because the air volume of the air dehumidified in the dehumidification rotor and directly provided to the dry room is controlled by controlling the supply air volume of the circulation fan instead of the air regenerated by the dehumidification rotor. Management can be made more precise.
  • the operation of the shear heat exchanger may be adjusted downward to reduce the consumption of operating costs.
  • the reduction of energy consumption through the downward operation control of the front end heat exchanger may also cause a reduction in energy required for the operation of the circulation fan and the rear end heat exchanger, thereby minimizing the energy consumption as a whole.
  • FIG. 1 is a block diagram of a dew point temperature management apparatus of a dry room according to an embodiment of the present invention.
  • FIG. 2 is a flow chart showing a dew point temperature management method of a dry room according to an embodiment of the present invention.
  • Figure 3 is a flow chart illustrating a dew point temperature management method of the dry room through the operation adjustment of the shear heat exchanger according to an embodiment of the present invention.
  • FIG. 1 is a block diagram of a dew point temperature management apparatus of a dry room according to the present invention.
  • a dew point temperature management apparatus 100 of a dry room includes a humidity sensor 110, a dew point temperature sensor 120, and a controller 130.
  • the dew point temperature management apparatus 100 of this dry room is preferably applied in a dry room control system.
  • a dry room control system includes a plurality of components and devices described below in a predetermined housing, and the dry room 70 passes through various flow paths through cooling, foreign material removal, dehumidification, and heating of air sucked from the outside. To be supplied.
  • the present invention is to precisely and efficiently manage the dew point temperature of the dry room (70).
  • the shear heat exchanger 10 purifies the air using an internal filter to remove foreign substances, and heats and cools the sucked air using an internal cooling coil.
  • the circulation fan 20 is provided at the outlet side of the shear heat exchanger 10. As described above, the circulation fan 20 sucks the outside air to be delivered to the front end heat exchange unit 10, and supplies the cooled air output from the front end heat exchange unit 10 to the dehumidification rotor 30 at the rear stage. do. This air supply is made through a predetermined flow path. This also applies to the flow path described later.
  • the air cooled by the operation of the circulation fan 20 is supplied to the dehumidification rotor 30, wherein the cooled air is provided to the first area of the dehumidification rotor 30 to be dehumidified.
  • the dehumidification rotor 30 is divided into a plurality of areas and functions different in each area. For example, a first region where air is dehumidified, a second region for cooling the dehumidification rotor 30 in order to increase the efficiency of the first region, and air passing through the second region exchanges heat with the dehumidification rotor 30 to regenerate a heater. It may be divided into a third region sent to the unit 50 to adjust to a temperature suitable for dehumidification.
  • the air from the circulation fan 20 is basically provided to the first region and dehumidified, but a part of the air is branched and passed to the second region to be supplied to the regeneration heater unit 50 installed at the rear stage. That is, the second area communicates with the regeneration heater unit 50.
  • the circulation fan 20 operates at a preset range of operation rate. For example, the circulation fan 20 operates at the maximum operation rate at the lowest operation rate. Accordingly, the supply air volume from the circulation fan 20 is also set to the lowest to the highest.
  • dehumidification of the air is performed by a dry rotary dehumidification method. These multiple areas communicate with each flow path during rotation of the dehumidification rotor 30. Air passing through the first region of the dehumidification rotor 30 is delivered to the rear end heat exchanger 40 at the rear end along the corresponding flow path. The rear heat exchanger 7 adjusts the temperature of the dehumidified air. The air passing through the after heat exchange unit 40 is supplied to the dry room 70 through the corresponding flow path.
  • the dry room 70 maintains the relative humidity within a target value range preset for the process. For example, when handling lithium in batteries, the relative humidity is maintained at 2% or less. As such, in order to maintain the internal relative humidity of the dry room 70 within the target value range, it is important to manage the dew point temperature.
  • the present invention provides an apparatus and method for dew point management of the dry room (70). Some of the internal air of the dry room 70 may be discharged to the outside.
  • the air heated in the regenerative heater 50 removes the moisture absorbed by the dehumidifying rotor 30.
  • the temperature of the first region where dehumidification is actually performed in the dehumidification rotor 30 is increased.
  • the air from the shear extension exchange part 20 is provided by the circulation fan 20 to a part of the first region of the dehumidification rotor 30 and to a part of the second region of the dehumidification rotor 30. Air is dehumidified while passing through the first region. The dehumidified air passes through the flow path and is delivered to the rear heat exchange unit 40.
  • the heat exchange of the air is made in the post heat exchange unit 40.
  • the rear heat exchanger 40 is cooled or heated depending on the air condition.
  • the temperature of the air is finally adjusted, and the regulated air is supplied to the dry room 70.
  • the humidity of the dry room 70 is maintained at a target value.
  • the air provided to the second region of the dehumidification rotor 30 receives heat from the portion of the dehumidification rotor 30 whose temperature is increased in the third region while passing through the second region by the suction force of the exhaust fan 60.
  • the regeneration heater 50 is transferred.
  • the regenerated heater unit 50 receives the air and heats it to a predetermined temperature to make it relatively high temperature.
  • the hot air passes through the third zone to increase the temperature of the third zone and removes moisture from the regenerated heater unit 50. Done. Air passing through the third region of the regenerated heater unit 50 is exhausted to the outside by the exhaust fan 60.
  • the absolute of the air sucked into the shear heat exchange unit 10 from the humidity sensor 110 installed at the front end of the shear heat exchange unit 10 Measure the humidity.
  • the humidity sensor 110 may measure the absolute humidity of the air in which heat exchange is completed in the shear heat exchanger 10.
  • the dew point temperature sensor 120 is installed in the dry room 70 to measure the dew point temperature in the dry room 70.
  • the absolute humidity and dew point temperature values of the air measured by the humidity sensor 110 and the dew point temperature sensor 120 are input to the controller 130 in real time.
  • the controller 130 controls the dew point temperature of the dry room 70 by adjusting the supply air volume of the circulation fan 20 based on these measured values. Specifically, the controller 130 first measures the supply air volume from the circulation fan 20 provided to the dehumidifying rotor 30 so that the dew point temperature of the dry room 70 measured by the dew point temperature sensor 120 is maintained at a predetermined target value. Adjust This may be implemented by adjusting the rotational speed of the blade of the circulation fan 20. To this end, the controller 130 to apply a current for adjusting the blade rotation of the circulation fan 20.
  • the control unit 130 performs a shear heat exchanger 10 until the absolute humidity measured by the humidity sensor 110 reaches a preset reference humidity. Decrease operation).
  • the dew point temperature of the dry room 70 is affected by the absolute humidity (water content) of the air sucked into the shear heat exchanger 10.
  • the shear heat exchanger 109 Absolute humidity may be lowered to a certain reference value with respect to the outside air introduced into Accordingly, the absolute humidity can be lowered by reducing the operation rate until the predetermined reference humidity is set for the air flowing into the shear heat exchanger 10. Furthermore, in another embodiment, when the supply air volume of the circulation fan 20 is at the lowest state and the absolute humidity measured by the humidity sensor 110 is smaller than the lower limit of the preset reference humidity, the controller 130 of the shear heat exchanger 10 You can also shut down.
  • the shear heat exchange part 10 is used when the absolute humidity of the air in the shear heat exchange part 10 is lower than the lower limit of the reference value. This is because the dew point temperature can still be managed to the target value even after the operation of. In other words, the dew point temperature can still maintain the target value because the absolute humidity of the air flowing into the shear heat exchange unit 10 is below a certain degree even at the lowest operation rate of the circulation fan 20.
  • the supply air volume of the circulation fan 20 may be reduced within the limit in which the dew point temperature is managed as the target value. Can be.
  • the circulation fan 20 may be operated at the minimum amount of air depending on the dew point temperature. This corresponds to a case where the dew point temperature can be managed as a target value even when the absolute humidity of the air sucked from the outside is low, that is, the minimum flow rate of the circulation fan 20 is maintained.
  • the exhaust air volume of the exhaust fan 60 may also be adjusted. That is, the air volume adjustment of the circulation fan 20 and the exhaust fan 60 can be performed simultaneously or only one of the two. Alternatively, the two may be performed sequentially or at least some of them may overlap. This is because management of the dew point temperature can be made more quickly and easily by adjusting the air volume of the exhaust fan 60 when it is difficult to manage the dew point temperature quickly to the target value range only by adjusting the supply air volume of the circulation fan 20. Air volume adjustment of the circulation fan 20 and the exhaust fan 60 can be performed by adjusting the rotation speed of the blades in the circulation fan 20 and the exhaust fan 60.
  • FIG. 2 is a flowchart illustrating a dew point temperature management method of a dry room according to an exemplary embodiment of the present invention.
  • the dew point temperature management method of a dry room according to an embodiment of the present invention, the shear heat exchanger 10 for cooling by heat-exchanging the air sucked from the outside, and the air cooled in the shear heat exchanger 110
  • the dehumidification rotor 30 dehumidifying in the first region, the post heat exchanger 40 for cooling and heat-exchanging the air passing through the dehumidification rotor 30, and the front heat exchanger 10 suck the outside air and dehumidify the rotor.
  • a circulation fan 30 for supplying the cooled air to the 30 to supply the dehumidified air through the dehumidification rotor 30 to the dry room 70 through the rear end heat exchanger 40, and to the circulation fan.
  • a regeneration heater unit 50 which heats and regenerates air which is branched from the air provided to the dehumidification rotor 30 and passes through the second region of the dehumidification rotor 30, and regenerated by the regeneration heater unit 50.
  • Dry room management including an exhaust fan 60 for exhausting air passing through the third region of 30
  • the dew point temperature sensor 120 installed in the dry room 70 measures the dew point temperature in the dry room 70 (S101), and at the humidity sensor 110 installed at the front end of the shear heat exchange unit 10. Absolute humidity of the air sucked into the shear heat exchanger 10 is measured (S103).
  • These steps S101 and S103 may be performed simultaneously or sequentially. These steps are performed independently of each other.
  • the absolute humidity and dew point temperature measured in this way is transmitted to the controller 130 in real time.
  • the controller 130 adjusts the supply air volume of the circulation fan 20 to maintain the measured dew point temperature at a predetermined target value (S105). That is, the circulation fan according to the dew point temperature measured in real time by the dew point temperature sensor 120 in order to maintain the dew point temperature of the dry room 70 by adjusting the supply air volume of the air supplied from the circulation fan 20 to the target value ( 20 is to control the supply air volume.
  • the control of the supply air volume is implemented by adjusting the rotational speed of the blade of the circulation fan (20).
  • the dew point temperature is naturally managed within the target value, thereby further reducing the operation rate of the shear heat exchanger 10. Since the operation of the shear heat exchanger 10 is to reduce the absolute humidity of the incoming air, it is possible to reduce the operation rate of the shear heat exchanger 10 when the dew point temperature is managed as a target value without further reducing the absolute humidity.
  • steps S107 and S109 are performed on the premise that the dew point temperature is managed as the target value. That is, since it is for maintaining the dew point temperature at the target value for the final purpose of the present invention, while adjusting the supply air volume of the circulation fan 20 so that the dew point temperature is maintained at the target value as in step S105, the circulation fan as in step S107 It is judged whether the supply air volume of 20 reaches the minimum state, and adjusts the operation rate of the shear heat exchange part 10 like step S109. If the dew point temperature deviates from the target value during the performance of steps S107 and S109, these processes are preferably stopped.
  • the exhaust air amount of the exhaust fan 60 is set corresponding to the supply air volume of the circulation fan 20. This determines, for example, how much to reduce or increase the exhaust air volume of the exhaust fan 60 depending on how much the supply air volume of the circulation fan 20 is increased or decreased. As a result, the air volume may be organically set between the circulation fan 20 and the exhaust fan 60 for the dew point temperature management of the dry room 70.
  • FIG. 3 is a flowchart illustrating a dew point temperature management method of a dry room according to another embodiment of the present invention.
  • the humidity measured by the humidity sensor 110 is controlled in controlling the supply air volume of the circulation fan 20 so that the dew point temperature measured by the dew point temperature sensor 120 is maintained at a predetermined target value.
  • the absolute humidity is smaller than the lower limit of the preset reference humidity (S201)
  • the preset target value S203
  • the supply air volume of the circulation fan 20 is changed. Reduce (S203). That is, when the absolute temperature of the air sucked into the shear heat exchanger 10 is less than the lower limit of the reference humidity, the dew point temperature can be further lowered, thereby making it easier to manage the target value.
  • the absolute humidity when the air is dry, such as winter, the amount of moisture in the air sucked from the outside, that is, the absolute humidity is small, so that the amount of humidity in the air provided to the dry room 70 is low. Therefore, of course, even if the amount of air provided by the circulation fan 20 is reduced, the absolute humidity is low, so that it is possible to manage a constant dew point temperature.
  • FIG. 4 is a flowchart illustrating a dew point temperature management method of a dry room according to another embodiment of the present invention.
  • the humidity sensor 110 If the absolute humidity measured in real time is less than the lower limit of the predetermined reference humidity (S303), the operation of the shear heat exchanger is stopped (S305). That is, if the absolute humidity of the air flowing into the shear heat exchanger 10 is lower than the lower limit of the reference humidity even though the supply air volume of the circulation fan 20 is the lowest, the dew point temperature is naturally managed within the target value, so that the shear heat exchanger 10 There is no need to run it.
  • the lower limit of the reference humidity should be set to a value such that the dew point temperature is managed within the target value even in the lowest operating state of the circulation fan 20. Through this, it is possible to reduce energy consumption due to non-operation of the shear heat exchanger 10.
  • the dew point temperature of the dry room is accurately and efficiently managed in consideration of the absolute humidity of the air sucked into the shear heat exchanger in the dry room management system.
  • the dew point temperature of the dry room is controlled by controlling the temperature of the regenerative heater, or the amount of air supplied to the regenerative heater through the third region of the dehumidification rotor from the outside according to the dew point temperature of the dry room,
  • the precision of dew point management is improved and hunting of dew point temperature can be prevented during management.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Air Conditioning Control Device (AREA)
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PCT/KR2014/011761 2013-12-04 2014-12-03 드라이룸의 노점온도 관리장치 및 방법 WO2015084049A1 (ko)

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US11215371B2 (en) * 2018-07-17 2022-01-04 Hussmann Corporation Variable refrigerant flow (VRF) dehumidification system
CN114963748A (zh) * 2022-06-17 2022-08-30 东莞信易电热机械有限公司 控制方法、除湿干燥机及存储介质

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JP7366570B2 (ja) * 2019-03-29 2023-10-23 日本スピンドル製造株式会社 ドライルーム及びその制御方法
JP2020165630A (ja) * 2019-03-29 2020-10-08 日本スピンドル製造株式会社 露点温度調節用除湿装置
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