WO2009071028A1 - Dispositif de traitement d'air frais avec refroidisseur de surface à deux étages - Google Patents

Dispositif de traitement d'air frais avec refroidisseur de surface à deux étages Download PDF

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Publication number
WO2009071028A1
WO2009071028A1 PCT/CN2008/073176 CN2008073176W WO2009071028A1 WO 2009071028 A1 WO2009071028 A1 WO 2009071028A1 CN 2008073176 W CN2008073176 W CN 2008073176W WO 2009071028 A1 WO2009071028 A1 WO 2009071028A1
Authority
WO
WIPO (PCT)
Prior art keywords
fresh air
refrigerant
air
cooler
heat exchange
Prior art date
Application number
PCT/CN2008/073176
Other languages
English (en)
Chinese (zh)
Inventor
Jiguang Yan
Original Assignee
Jiguang Yan
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 Jiguang Yan filed Critical Jiguang Yan
Publication of WO2009071028A1 publication Critical patent/WO2009071028A1/fr

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
    • F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element

Definitions

  • the present invention relates to a fresh air handler having a two-stage air cooler.
  • Air conditioning equipment can be classified into window air conditioners, split air conditioners, and central air conditioners.
  • window air conditioners can naturally achieve indoor fresh air exchange
  • split air conditioners are difficult to introduce fresh air through the equipment itself
  • central air conditioning systems are generally equipped with fresh air handlers to introduce fresh air; processed by fresh air handlers
  • the fresh air is then delivered to the interior through the indoor air conditioner of the central air conditioning system.
  • the fresh air treatment machine commonly used at home and abroad uses a multi-row, such as four-row, six-row or eight-row air cooler to process the air to achieve heat exchange with the fresh air.
  • the fresh air processor installs the air cooler in a heat exchange space, and in a low-humidity environment, such as the continental environment of Europe, a refrigerant of about ire is introduced into the air cooler (hereinafter referred to as high-temperature refrigerant).
  • high-temperature refrigerant a refrigerant of about ire is introduced into the air cooler
  • the fresh air can be handled well, and the fresh air after such treatment will generally not cause condensation in the indoor air conditioner.
  • a high-temperature refrigerant of about ire is supplied to the air cooler, the fresh air after the high-temperature refrigerant treatment will cause serious condensation in the indoor air conditioner. phenomenon.
  • An object of the present invention is to provide a novel air conditioner of a novel structure and an air conditioning system using the same.
  • the new air treatment machine can still use high-temperature refrigerant in a high-humidity environment to achieve the dehumidification effect of the low-temperature refrigerant, thereby overcoming the defects of the existing new air-conditioning machine with high energy consumption and low efficiency.
  • the present invention provides a fresh air treatment machine including a surface cooler and a fan, wherein the fresh air treatment machine is provided with two or more, connected in series
  • the heat exchange space is provided with one or a set of surface coolers in each heat exchange space.
  • the principle is that, due to the multi-stage heat exchange space, the fresh air passes through the heat exchange space of each stage, and the humidity thereof continuously decreases, so that the treated fresh air reaches the humidity requirement, and the low-temperature refrigerant must be used in the single-stage heat exchange space.
  • a refrigerant of about 5 ° C can meet the humidity requirements, greatly reducing energy consumption.
  • the air coolers in each heat exchange space may be independent, that is, each air cooler is independently provided with a new refrigerant inlet. But this structure is relatively complicated.
  • the inventors of the present invention have found that the object coolers in each heat exchange space are connected in series through a refrigerant pipe, that is, the table coolers are connected in series, and the object of the present invention can also be achieved.
  • the refrigerant outlet of a surface cooler can be connected to the refrigerant inlet of the next air cooler through the refrigerant pipe.
  • This structure is compact and easy to manufacture, which is convenient for reducing the production cost, and can still make the treated fresh air reach the air conditioner. Equipment humidity requirements.
  • the inlet of the fresh refrigerant is disposed on the air cooler closest to the fan (the inlet causes the refrigerant to enter the fresh air handler system), and
  • the surface cooler closest to the fresh air inlet is provided with an outlet for the refrigerant after heat exchange (the outlet makes The refrigerant leaves the fresh air handler system, so that the overall flow direction of the refrigerant is opposite to the overall flow direction of the fresh air.
  • This reverse contact heat transfer can greatly improve heat exchange efficiency.
  • the flow direction of the refrigerant may not always be opposite to the overall flow direction of the fresh air, because the inside of the air cooler can be completely provided with a refrigerant coil.
  • the overall flow direction of the refrigerant is opposite to the overall flow direction of the fresh air.
  • the fresh air treatment machine comprises a first air cooler and a second air cooler which are connected in series with each other, the first air cooler is provided with a refrigerant inlet and a fresh air outlet; the second air cooler is provided with a refrigerant outlet and a fresh air inlet, the fresh air
  • the refrigerant is reversely contacted with the heat exchange on the first and second surface coolers. So designed, energy-saving, high-efficiency, the fresh air temperature generated can be lower than the temperature of the refrigerant after heat exchange. In other words, the high temperature refrigerant can control the fresh air to the proper humidity.
  • the air cooler can adopt an industry-standard air cooler, for example, the air cooler used is a multi-row cold air cooler, such as four rows, six rows or eight rows. Surface cooler.
  • the fresh air handler of the present invention may further be provided with a filter member, which may be a filter or the like.
  • a filter member which may be a filter or the like.
  • Such a design can remove harmful substances such as dust in the fresh air on the one hand, and on the other hand, excessive dust is not accumulated on the surface cooler, which affects heat exchange efficiency.
  • a filter element is placed in front of the inlet of the fresh air.
  • the refrigerant used in the fresh air treatment machine of the present invention may be a compressible refrigerant such as Freon.
  • the air cooler in the fresh air handler is an evaporator, which is combined with a fan, a condenser, an expansion valve, and a compressor to form a heat pump system.
  • the refrigerant used in the fresh air treatment machine of the present invention is an indirect heat exchange medium, which may be water or antifreeze water.
  • the air cooler in the fresh air handler is a heat exchanger, and an evaporator is required.
  • the evaporator is combined with a fan, a condenser, an expansion valve, and a compressor to form a heat pump system.
  • the heat pump system can be used for heat exchange of water or antifreeze water, and then water or antifreeze water can exchange heat for fresh air.
  • the present invention also provides an air conditioning system or an air conditioning apparatus that employs a fresh air handler as described above. More preferably, the air conditioning system or air conditioning apparatus of the present invention is a radiant cooling system.
  • the fresh air treatment machine of the invention realizes the dehumidification effect of the low-temperature refrigerant by using the series heat exchange space of two or more stages, and adopts the high-temperature refrigerant, thereby avoiding unnecessary energy consumption caused by using the low-temperature refrigerant.
  • the surface coolers in different heat exchange spaces are divided into a first surface cooler and a second surface cooler, wherein the fresh refrigerant first enters the first table cold.
  • the refrigerant heated by the first surface cooler by heat and moisture exchange is supplied to the second air cooler.
  • the outdoor high temperature and high humidity fresh air first exchanges heat with the second air cooler, the fresh air reduces the temperature, raises the relative humidity, and then the fresh refrigerant of the first air cooler (the temperature is higher than the temperature of the refrigerant in the second air cooler) Low) Perform hot and humid exchange to reach the target dew point temperature.
  • the invention utilizes the reverse flow of air and refrigerant, increases the temperature difference and enthalpy difference between the refrigerant and the air, and improves the heat exchange efficiency. Thanks to the treatment of the two-stage air cooler, the fresh air handler can be used.
  • the use of a relatively high temperature refrigerant also increases the evaporation pressure of the system, saving energy. Especially in the transition season, the air moisture content can be reduced without lowering the ambient temperature. Saves energy and improves comfort, especially for radiant air conditioning systems.
  • the fresh air treatment machine of the present invention will be further described with reference to the accompanying drawings, in which: FIG.
  • FIG. 1 is a schematic structural view of a fresh air handler having a two-stage air cooler. In the figure, the meaning of each reference mark is:
  • the fresh air treatment machine employs two stages of heat exchange spaces in series, and one surface cooler is disposed in each heat exchange space.
  • the fresh air treatment machine using three or more heat exchange spaces in series is basically the same as the embodiment; moreover, it can be understood by a person skilled in the art that a set of air coolers can also be used in each heat exchange space.
  • the fresh air handler in the present embodiment includes a two-stage air cooler and a fan 8.
  • the two-stage air cooler includes a first air cooler 1 and a second air cooler 2 connected in series with each other; the first air cooler 1 is provided with a refrigerant inlet 3 and a fresh air outlet 5, and the fresh refrigerant enters through the refrigerant inlet 3
  • the fresh air treatment machine, and the fresh air after the heat treatment is sent to the other part of the air conditioning system through the fresh air outlet 5 and then through the fan 8; the refrigerant from the first air cooler 1 is set in the first surface cooler 1 and the first
  • the refrigerant circulation pipe 9 between the two air coolers 2 enters the second air cooler 2; the second air cooler 2 is provided with a refrigerant outlet 4 and a fresh air inlet 6, and the refrigerant after the heat exchange leaves the fresh air through the refrigerant outlet 4
  • the processing machine, and the fresh air from the surrounding environment enters the fresh air treatment machine through the filter 7 and the fresh air inlet 6 in turn; the overall flow direction of the fresh air is opposite to the overall flow direction of the

Abstract

L'invention concerne un dispositif de traitement d'air frais avec refroidisseur de surface à deux étages qui comprend des refroidisseurs de surface et un ventilateur. Les refroidisseurs de surface comprennent un premier refroidisseur de surface (1) et un deuxième refroidisseur de surface (2) reliés en série, le premier refroidisseur de surface (1) étant pourvu d'une entrée de réfrigérant (3) et d'une sortie d'air frais (5), et le deuxième refroidisseur de surface (2) étant pourvu d'une sortie de réfrigérant (4) et d'une entrée d'air frais (6). L'air frais et le réfrigérant entrent en contact et échangent de la chaleur sur le premier refroidisseur de surface (1) et le deuxième refroidisseur de surface (2).
PCT/CN2008/073176 2007-11-30 2008-11-24 Dispositif de traitement d'air frais avec refroidisseur de surface à deux étages WO2009071028A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720060407.9 2007-11-30
CNU2007200604079U CN201145387Y (zh) 2007-11-30 2007-11-30 具有双级表冷器的新风处理机

Publications (1)

Publication Number Publication Date
WO2009071028A1 true WO2009071028A1 (fr) 2009-06-11

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PCT/CN2008/073176 WO2009071028A1 (fr) 2007-11-30 2008-11-24 Dispositif de traitement d'air frais avec refroidisseur de surface à deux étages

Country Status (2)

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CN (1) CN201145387Y (fr)
WO (1) WO2009071028A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155766A (zh) * 2011-03-30 2011-08-17 浙江大学 一种采用变流量变水温表冷器的恒温恒湿空调系统
CH705909A1 (de) * 2011-12-16 2013-06-28 Bs2 Ag Wärmetauscher für Luftentfeuchtung.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201145387Y (zh) * 2007-11-30 2008-11-05 严继光 具有双级表冷器的新风处理机
CN112432237A (zh) * 2020-11-24 2021-03-02 珠海格力电器股份有限公司 一种空调系统及其新风预热方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2089139U (zh) * 1990-11-16 1991-11-20 浙江省建筑设计院 低露点空气干燥机
CN2826245Y (zh) * 2005-11-18 2006-10-11 广东省吉荣空调设备公司 低温低湿组合式空气处理机
CN201145387Y (zh) * 2007-11-30 2008-11-05 严继光 具有双级表冷器的新风处理机

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2089139U (zh) * 1990-11-16 1991-11-20 浙江省建筑设计院 低露点空气干燥机
CN2826245Y (zh) * 2005-11-18 2006-10-11 广东省吉荣空调设备公司 低温低湿组合式空气处理机
CN201145387Y (zh) * 2007-11-30 2008-11-05 严继光 具有双级表冷器的新风处理机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155766A (zh) * 2011-03-30 2011-08-17 浙江大学 一种采用变流量变水温表冷器的恒温恒湿空调系统
CH705909A1 (de) * 2011-12-16 2013-06-28 Bs2 Ag Wärmetauscher für Luftentfeuchtung.

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Publication number Publication date
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