JP6384706B2 - Clean room air conditioning system - Google Patents

Clean room air conditioning system Download PDF

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JP6384706B2
JP6384706B2 JP2013268214A JP2013268214A JP6384706B2 JP 6384706 B2 JP6384706 B2 JP 6384706B2 JP 2013268214 A JP2013268214 A JP 2013268214A JP 2013268214 A JP2013268214 A JP 2013268214A JP 6384706 B2 JP6384706 B2 JP 6384706B2
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temperature
air
coil
clean room
outdoor unit
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JP2015124917A (en
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弥 長谷部
弥 長谷部
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清水建設株式会社
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Description

  The present invention relates to an air conditioning system suitable for a clean room.
  Conventionally, in an industrial clean room air conditioning system, cold water and hot water are produced using a heat source system, cold water and hot water are supplied to an outside air processing air conditioner through a piping system, and the temperature and humidity of the outside air are controlled by the cold water and hot water. I was trying to supply this to a clean room.
For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 08-114347) discloses a heat source system in which a cooling tower is used as a cooling source in winter when the outside air temperature is low and a refrigerator is used as a cooling source in summer when the outside temperature is high. ing.
Japanese Patent Laid-Open No. 08-114347
  Since the heat source system using the cooling tower and the refrigerator as described above is expensive, in order to construct an air conditioning system for a clean room, a corresponding cost has to be taken.
  Therefore, a general-purpose multi-type air-cooled heat pump package comprising an outdoor unit and an outside air processing air conditioner that obtains a refrigerant from the outdoor unit, adjusts the temperature of the outside air with the refrigerant, and introduces it into the room, is an air conditioning system for a clean room. It is conceivable to divert it.
  However, when diverting a general-purpose multi-type air-cooled heat pump package to an air conditioning system for a clean room, a sensor for detecting the dew point temperature must be prepared separately, resulting in a cost increase. was there.
The present invention solves the above-described problems. The invention according to claim 1 is directed to an outdoor unit that generates a refrigerant having a commanded temperature, and a refrigerant generated by the outdoor unit is introduced and introduced. An outside air processing air conditioner having a first coil for controlling the temperature of the outside air, and in the clean room air conditioning system on the premise that air having a predetermined dry bulb temperature and absolute humidity is supplied to the clean room , the outside air processing In the air conditioner, a humidifier provided on the downstream side of the first coil in the air flow direction, and a first temperature sensor that is disposed in the vicinity of the humidifier and detects the temperature in a wet state. And determining the temperature of the refrigerant generated by the outdoor unit based on the temperature detected by the first temperature sensor. In the air diagram, the humidity passing through the temperature detected by the first temperature sensor is determined. Sphere temperature constant line , Characterized in that the dry-bulb temperature shown by the intersection of the predetermined horizontal line and instruction temperature of the outdoor unit.
The invention according to claim 2 is the clean room air conditioning system of claim 1, and a second coil provided in the air flow direction downstream of the humidifier, arranged in the vicinity of the second coil, dry And a second temperature sensor for detecting a temperature in a state, and determining a command temperature of the second coil based on the temperature detected by the second temperature sensor.
According to the air conditioning system 1 of the present invention, the first temperature sensor that detects the temperature in a wet state is provided, and the temperature of the refrigerant generated in the outdoor unit is determined based on the temperature detected by the first temperature sensor. Therefore, a sensor for detecting the dew point temperature is not required, and the general-purpose multi-type air cooling heat pump package can be diverted to a clean room air conditioning system at low cost.
It is a figure showing typically an outline of air-conditioning system 1 concerning an embodiment of the present invention. It is a figure which shows an air line figure.
  Hereinafter, preferred embodiments of an air conditioning system 1 according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram schematically showing an outline of an air conditioning system 1 according to an embodiment of the present invention.
  The air conditioning system 1 according to the present invention is configured based on a general-purpose multi-type air-cooled heat pump package. The multi-type air-cooled heat pump package is mainly composed of an outdoor unit that generates refrigerant, an outdoor air processing air conditioner 10 that has a coil housed in the casing 11, and a pipe that flows the refrigerant through the coil. In the drawings, an outdoor unit, a coil, piping, and the like are schematically shown.
  In the present embodiment, the following description is based on the assumption that the dry bulb temperature and the absolute humidity supply the air at the point P in the air diagram shown in FIG. 2 to the clean room.
  Outside air OA is taken into the casing 11 of the air conditioning system 1, the temperature and humidity are adjusted, and the air is supplied to a clean room (not shown) as the supply air SA. The dry bulb temperature and absolute humidity of the outside air OA are indicated by point A in the air diagram shown in FIG.
  The casing 11 is operated so as to always take in the outside air OA by operating the blower fan 22 and supply it to the clean room as the supply air SA, so that the inside of the clean room is always maintained at a positive pressure.
  The air taken into the casing 11 flows through the pre-filter 13 and the medium performance filter 14 to remove dust and the like in the air.
  The outdoor unit 5 generates a refrigerant having a commanded temperature and circulates the refrigerant through the pipe 7 to the coil 8 in the casing 11. The coil 8 is expressed as “first coil” in the claims.
  The temperature of the air that has passed through the coil 8 is adjusted, the humidity is controlled by the water film humidifier 17, the temperature is raised by the reheating coil 20, the HEPA filter 25 is passed, and the air supply SA is supplied to the clean room. The reheating coil 20 is expressed as a “second coil” in the claims.
  The water film humidifier 17 is maintained in a state where water dripped from the humidified water supply unit 16 is constantly supplied. The air that has passed through the water film humidifier 17 is air having a relative humidity of approximately 100%.
  The water in the humidified water supply unit 16 is also dropped into the water storage unit 30, and the wet bulb temperature is acquired by the first temperature sensor 31 provided in the water storage unit 30. ing. The temperature acquired by the first temperature sensor 31 is indicated by a point C in the air diagram shown in FIG. Further, the air that has passed through the water film humidifier 17 becomes air having a relative humidity of approximately 100% and is in a state of point C.
  In the air diagram shown in FIG. 2, it is assumed that a constant wet bulb temperature line passing through the temperature detected by the first temperature sensor 31 and a predetermined horizontal line (XX ′; outside air OA) are on board. The temperature of the refrigerant generated in the outdoor unit 5 is determined by the intersection (that is, the point B) with the line. The temperature detected by the first temperature sensor 31 is sent to a control unit (not shown) of the outdoor unit 5 to determine the command temperature for the outdoor unit 5 as described above.
  As described above, in the air conditioning system 1 according to the present invention, the first temperature sensor 31 that detects the temperature in the wet state is provided, and is generated by the outdoor unit 5 based on the temperature detected by the first temperature sensor 31. Since the temperature of the refrigerant is determined, a sensor for detecting the dew point temperature is not required, and the general-purpose multi-type air-cooled heat pump package can be diverted to an air conditioning system for a clean room at low cost.
  A reheating coil 20 provided on the downstream side of the water film humidifier 17 in the airflow direction is provided. The reheating coil 20 may have any heat source, but an electric heater or the like can be used, for example.
  In the vicinity of the reheating coil 20, a second temperature sensor 32 for detecting the temperature in a dry state is provided so that the dry bulb temperature can be acquired. The command temperature of the reheating coil 20 is determined based on the temperature detected by the second temperature sensor 32. That is, the reheating coil 20 performs heating so that the point P is the target point from the point C in the air diagram.
  As described above, in the air conditioning system 1 according to the present invention, in the air diagram shown in FIG. 2, the outside air OA that is the dry bulb temperature and the absolute humidity indicated by the point A is adjusted as the point P that is the target point. To supply to the clean room.
DESCRIPTION OF SYMBOLS 1 ... Air conditioning system 5 ... Outdoor unit 7 ... Piping 8 ... Coil 10 ... Outside air processing air conditioner 11 ... Casing 13 ... Pre filter 14 ... Medium performance filter 16 .... Humidification water supply unit 17 ... water film humidifier 20 ... reheat coil 22 ... blower fan 25 ... HEPA filter 30 ... water storage part 31 ... first temperature sensor 32 ...・ Second temperature sensor

Claims (2)

  1. An outdoor unit that generates refrigerant at the commanded temperature;
    An air processing air conditioner having a first coil for controlling the temperature of the introduced outside air, in which the refrigerant generated in the outdoor unit is flown, and supplying air of a predetermined dry bulb temperature and absolute humidity to the clean room In clean room air conditioning systems based on
    In the outside air processing air conditioner, a humidifier is provided on the downstream side in the air flow direction of the first coil, and water is dropped.
    A first temperature sensor disposed in the vicinity of the humidifier and detecting the temperature in a wet state; and
    Determining the temperature of the refrigerant generated in the outdoor unit based on the temperature detected by the first temperature sensor;
    In the air diagram,
    A line of constant wet bulb temperature passing through the temperature detected by the first temperature sensor;
    An air conditioning system for a clean room characterized in that a dry bulb temperature indicated by an intersection with a predetermined horizontal line is set as a command temperature of the outdoor unit.
  2. A second coil provided downstream in the airflow direction of the humidifier;
    A second temperature sensor disposed in the vicinity of the second coil and detecting a temperature in a dry state;
    2. The clean room air conditioning system according to claim 1, wherein a command temperature of the second coil is determined based on a temperature detected by the second temperature sensor.
JP2013268214A 2013-12-26 2013-12-26 Clean room air conditioning system Active JP6384706B2 (en)

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JP2013268214A JP6384706B2 (en) 2013-12-26 2013-12-26 Clean room air conditioning system

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Application Number Priority Date Filing Date Title
JP2013268214A JP6384706B2 (en) 2013-12-26 2013-12-26 Clean room air conditioning system

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JP2015124917A JP2015124917A (en) 2015-07-06
JP6384706B2 true JP6384706B2 (en) 2018-09-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111609485A (en) * 2020-05-26 2020-09-01 项龙康 Heating ventilation air-conditioning energy-saving system for building and working method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108444044B (en) * 2018-02-14 2020-12-25 青岛海尔空调器有限总公司 Self-cleaning control method for air conditioner

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03105145A (en) * 1989-09-18 1991-05-01 Hitachi Ltd Controlling method for defrosting of thermo-hygrostat
JPH05288390A (en) * 1992-04-06 1993-11-02 Taikisha Ltd Outdoor air conditioner
JP2836671B2 (en) * 1994-11-01 1998-12-14 松下冷機株式会社 Air conditioner
JP2004245538A (en) * 2003-02-17 2004-09-02 Sanki Eng Co Ltd Air conditioner
JP4651377B2 (en) * 2004-12-20 2011-03-16 株式会社テクノ菱和 Air conditioning system
JP4555097B2 (en) * 2005-01-25 2010-09-29 三機工業株式会社 Clean room air conditioner
JP4892305B2 (en) * 2006-09-04 2012-03-07 三機工業株式会社 Outside air conditioning air conditioner
JP5302931B2 (en) * 2010-05-24 2013-10-02 株式会社大気社 Air purification humidifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111609485A (en) * 2020-05-26 2020-09-01 项龙康 Heating ventilation air-conditioning energy-saving system for building and working method thereof

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