EP2813793A1 - Échangeur thermique et unité extérieure pour climatiseur en disposant - Google Patents

Échangeur thermique et unité extérieure pour climatiseur en disposant Download PDF

Info

Publication number
EP2813793A1
EP2813793A1 EP20140169726 EP14169726A EP2813793A1 EP 2813793 A1 EP2813793 A1 EP 2813793A1 EP 20140169726 EP20140169726 EP 20140169726 EP 14169726 A EP14169726 A EP 14169726A EP 2813793 A1 EP2813793 A1 EP 2813793A1
Authority
EP
European Patent Office
Prior art keywords
region
heat exchanger
coated
fin
exchanger according
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP20140169726
Other languages
German (de)
English (en)
Inventor
Hong Suk Kim
Seung Hoon Kal
Myong Jong Kwon
Seung Jin Oh
Choong Hyo Jang
Yong Hwa Choi
Hayase Gaku
Sung Hun Hong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP2813793A1 publication Critical patent/EP2813793A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
    • 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
    • F28D1/04—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 tubular conduits
    • F28D1/047—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 tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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 tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • 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
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/02—Coatings; Surface treatments hydrophilic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/04—Coatings; Surface treatments hydrophobic

Definitions

  • Embodiments of the present disclosure relate to a heat exchanger which has a structure improved to enhance efficiency thereof and an outdoor unit for air-conditioners having the same.
  • a heat exchanger is mounted and used in an apparatus using refrigeration cycles such as air-conditioners or refrigerators, which includes a plurality of heat exchanger fins and a plurality of refrigerant pipes which are mounted such that they guide a refrigerant and pass through the heat exchanger fins.
  • the heat exchanger fins increase a contact area with outside air flowing in the heat exchanger and thereby improve heat exchange efficiency between refrigerant flowing in the refrigerant pipes and outside air.
  • heat exchange efficiency increases as a gap between heat exchanger fins decreases and a contact area between the heat exchanger fins and the outside air increases.
  • a surface of the evaporator is maintained at a low temperature due to circulation of cold refrigerant, while inflowing air has a relatively high temperature. Accordingly, inflowing air containing moisture contacts the heat exchanger fins of the evaporator maintained at a low temperature and a dew point of air which contacts the heat exchanger fins is dropped, dew is formed on the surface of the heat exchanger fins and accumulated dew forms condensation water.
  • condensation water formed on the fins is cooled and ice is thus formed.
  • frosting may occur on the fins.
  • Frosting is a phenomenon in which, when wet air contacts a cooling side maintained at a low temperature of 0° or below, a porous frost layer is formed on the cooling side. That is, the frosting phenomenon may occur on the fin surface when high-temperature high-humidity air flowing in the heat exchanger contacts the fins maintained at a low temperature due to the refrigerant.
  • condensation water formed on the heat exchanger fins of the evaporator is formed between the heat exchanger fins of the heat exchanger, or creates a bridge between the heat exchanger fins.
  • the condensation water, fog, ice and the like present between the heat exchanger fins interrupt air flow between the heat exchanger fins and thus hinder smooth heat exchange.
  • condensation water causes corrosion of a metal material constituting the heat exchanger fins, produces white powder oxides and causes microorganism propagation.
  • a frost layer is grown due to frosting phenomenon, disadvantageously causing an increase in thermal resistance of the heat exchanger and decreasing a flow rate of air passing through the heat exchanger due to flow channel closure.
  • a heat exchanger includes a refrigerant pipe through which a refrigerant flows, and a plurality of fins coupled to an outer circumference surface of the refrigerant pipe, wherein each fin includes a first region disposed upstream with respect to an air flow direction, and a second region which forms a boundary with the first region and is disposed downstream with respect to the air flow direction, and wherein the first region and the second region have different surface energies in order to prevent formation of condensation water on the fin.
  • the boundary may be formed such that a width of the first region in a longitudinal direction of the fin is uniform.
  • the first region may have a width of about 5mm or less.
  • the boundary may be formed such that the width of the first region in the longitudinal direction of the fin is non-uniform.
  • the first region may be coated with a hydrophilic agent having a high surface energy so as to facilitate discharge of condensation water formed in the first region.
  • the hydrophilic agent may include at least one of a carboxyl group (-COOH), an alcohol group (-OH), an amine group (-NH2), a sulfonic acid group (-SO3H) and a urea group (-NHCONH2).
  • the first region may be coated with a hydrophobic agent having a low surface energy so as to prevent formation of condensation water in the first region.
  • the hydrophobic agent may include at least one of an inorganic nanopowder and a fluorine compound.
  • the second region may be coated with a hydrophobic agent or be uncoated.
  • the second region may be coated with a hydrophilic agent or be uncoated.
  • the second region may be coated with a hydrophilic agent or a hydrophobic agent.
  • One of the first region and the second region may be covered with a mask, the entire surface of the fin may be coated with a hydrophobic agent, the mask may be removed and the region covered with the mask may be coated with a hydrophilic agent.
  • one of the first region and the second region may be covered with a mask, the entire surface of the fin may be coated with a hydrophilic agent, the mask may be removed and the region covered with the mask may be coated with a hydrophobic agent.
  • the first region or the second region may be coated with a hydrophilic agent and the uncoated region is coated with a hydrophobic agent by dipcoating.
  • the first region and the second region may be coated by at least one of dip coating, spray coating and vacuum evaporation such that a difference in surface energy between the first region and the second region is present.
  • a heat exchanger includes a refrigerant pipe having a flow channel through which a refrigerant flows, and a plurality of fins coupled to an outer circumference surface of the refrigerant pipe, wherein each fin includes a first region which is disposed upstream with respect to a high-temperature air flow direction and has a constant width, and a second region which contacts air passing through the first region and forms a boundary with the first region, wherein both surfaces of the first region are coated with a hydrophobic agent having a low surface energy to prevent formation of condensation water in the first region upon heat-exchange between the high-temperature air flowing in the first region and the refrigerant flowing in the refrigerant pipe, and both surfaces of the second region are coated with a hydrophilic agent having a high surface energy to facilitate discharge of condensation water formed in the second region upon heat-exchange between the high-temperature air passing through the first region and the refrigerant flowing in the refrigerant pipe.
  • the refrigerant pipe may be bent in a zigzag form, and the second region may have a plurality of through holes formed by which the refrigerant pipe passes through the fin in a zigzag form.
  • the hydrophilic agent may include at least one of a carboxyl group (-COOH), an alcohol group (-OH), an amine group (-NH2), a sulfonic acid group (-SO3H) and a urea group (-NHCONH2), and the hydrophobic agent may include at least one of an inorganic nanopowder and a fluorine compound.
  • Both surfaces of the first region may be covered with a mask, the entire surface of the fin may be coated with a hydrophilic agent, the mask may be removed and the region covered with the mask may be coated with a hydrophobic agent.
  • an outdoor unit for air-conditioners includes a body, a compression unit disposed in the body, the compression unit compressing a refrigerant, and a heat exchanger to heat-exchange the refrigerant compressed by the compression unit with outdoor air
  • the heat exchanger includes a refrigerant pipe through which a refrigerant flows, and a plurality of fins adhered to an outer circumference surface of the refrigerant pipe, wherein each fin includes a first region disposed upstream with respect to an air flow direction, and a second region forming a boundary with the first region and disposed downstream with respect to the air flow direction, wherein the first region and the second region are coated such that the first and second regions have different surface energies in order to prevent formation of condensation water on the fin.
  • the first region may have a constant width in a longitudinal direction of the fin and may be coated with a hydrophobic agent which prevents formation of condensation water due to low surface energy.
  • FIG. 1 is a perspective view illustrating a configuration of a heat exchanger according to an embodiment of the present disclosure.
  • the heat exchanger 10 includes a refrigerant pipe 20 in which a refrigerant flows and a fin 30 coupled to an outer circumference surface of the refrigerant pipe 20.
  • the refrigerant pipe 20 has a hollow tubular shape, enabling the fluid refrigerant to flow.
  • the refrigerant pipe 20 is preferably as long as possible to increase a heat exchange area between the refrigerant flowing in the refrigerant pipe 20 and outside air.
  • the refrigerant pipe 30 extends to a great length in a single direction, spatial utilization efficiency is poor. Accordingly, the refrigerant pipe 20 is bent in a direction opposite to a direction in which the refrigerant pipe 20 extends from both ends of the heat exchanger 10 and bending is repeated several times, thereby efficiently increasing a heat exchange area in a limited space.
  • refrigerant flowing in the refrigerant pipe 20 a plurality of refrigerants including R-134a and R410A which are mixtures of Freon having different properties are used.
  • the refrigerant is heat-exchanged with outside air while undergoing phase change (compression) from a gas state to a liquid state or is heat-exchanged with outside air while undergoing phase change (expansion) from a liquid state to a gas state.
  • the heat exchanger 10 is used as a condenser and when the refrigerant is phase-changed from a liquid state to a gas state, the heat exchanger 10 is used as an evaporator.
  • the refrigerant is compressed or expanded and, at the same time, emits heat to the outside or absorbs heat from the outside when while passing through the refrigerant pipe 20.
  • the fin 30 is coupled to the refrigerant pipe 20 so that the refrigerant efficiently emits or absorbs heat.
  • a plurality of fins 30 including the fin 30 are laminated at a constant distance in a direction in which the refrigerant pipe 20 extends.
  • the fin 30 is made of one of various metal materials including aluminum having high thermal conductivity, and contacts and is coupled to the outer circumference surface of the refrigerant pipe 20 and thereby functions to increase a contact area between the fin 30 and the refrigerant pipe 20.
  • the gap between the fins 30 laminated becomes narrow, the number of fins 30 disposed increases.
  • the gap acts as a resistance to the air flowing in the heat exchanger 10 and may cause pressure loss. Accordingly, it may be necessary to suitably control the gap.
  • a louver (not shown) which is bent to form a predetermined angle may be formed on the surface of the fin 30.
  • the louver increases a contact area in which the fin 30 contacts outside air and thereby facilitates heat-exchange.
  • the surface of the fin 30 includes a first region 50 and a second region 60.
  • the first region 50 may be formed upstream with respect to an air flow direction and the second region 60 may form a boundary 80 with the first region 50 and be formed downstream with respect to the air flow direction.
  • a material for the refrigerant pipe 20 and the fin 30 constituting the heat exchanger 10 may be aluminum, copper or the like.
  • FIG. 2 shows a fin provided in the heat exchanger according to the present embodiment
  • FIG. 3 shows a contact angle of condensation water formed on the fin provided in the heat exchanger according to the present embodiment.
  • the surface of the fin 30 may include the first region 50 and the second region 60.
  • the second region 60 may be provided with a plurality of through holes 40 which enable the refrigerant pipes 20 to pass through the fins 30 in a zigzag form.
  • the boundary 80 disposed between the first region 50 and the second region 60 is formed such that a width of the first region 50 in a longitudinal direction of the fin 30 is uniform.
  • the boundary 80 may be formed at a position which enables the first region 50 to have a width of 5mm or less.
  • boundary 80 may be formed such that a width of the first region 50 in the longitudinal direction of the fin 30 is non-uniform.
  • the boundary 80 may have a linear shape.
  • the air flowing in the heat exchanger 10 sequentially passes through the first region 50 and the second region 60 and then flows outside of the heat exchanger 10.
  • the first region 50 and the second region 60 may be treated so as to prevent formation of a condensation water 70 on the surface of the fin 30 or facilitate discharge of the formed condensation water 70.
  • the first region 50 and the second region 60 may have different surface energies.
  • Each of the first region 50 and the second region 60 may be coated with a hydrophilic agent or a hydrophobic agent or may be uncoated.
  • Hydrophobicity is a property of an object in which hemispheric drops are formed when a surface of the object is wet with water.
  • Hydrophilicity is a property of an object in which hemispheric drops are not formed but are aggregated together and widely spread when a surface of the object is wet with water.
  • Hydrophobic and hydrophilic substances have different surface energies.
  • the surface of the liquid or solid When a heterogeneous substance is placed on a liquid or solid surface, the surface of the liquid or solid has a high energy as compared to an inside of the liquid or solid, and an excessive energy of the liquid or solid surface tends to contract a surface at all times and this is referred to as surface energy.
  • the fin 30 in a solid state has a predetermined surface energy and has a property of drawing the condensation water 70 formed on the surface of the fin 30 toward the fin 30 as the surface contraction property.
  • the fin 30 when the fin 30 is coated with a hydrophobic agent, the fin 30 has a low surface energy, and when the fin 30 is coated with a hydrophilic agent, the fin 30 has a high surface energy.
  • the condensation water 70 formed on the fin 30 has a large contact angle (regarding a liquid and a solid which contact each other, an angle formed by the surface of the liquid and the surface of the solid), and when the fin 30 is coated with a hydrophilic agent, the condensation water 70 formed on the fin 30 has a small contact angle.
  • the fin 30 When the contact angle between the fin 30 and the condensation water contacts is 40 degrees or less, the fin 30 is considered to be hydrophilic, and when the contact angle is 10 degrees or less, the fin 30 is considered to be super hydrophilic. In addition, when the contact angle is 70 degrees or above and is 100 degrees or below, the fin 30 is considered to be hydrophobic, and when the contact angle is 110 degrees or above and is 180 degrees or below, the fin 30 is considered to be super hydrophobic.
  • the contact angle between the fin 30 and the condensation water ranges from a hydrophilic value to a hydrophobic value because a surface of the raw material of the fin 30 is used without any treatment.
  • Contact angle increases in order of hydrophilic coating, non-coating and hydrophobic coating.
  • the second region 60 may be coated with a hydrophilic agent or be uncoated.
  • the second region 60 may be coated with a hydrophobic agent or be uncoated.
  • the second region 60 may be coated with a hydrophilic agent, or be uncoated.
  • the first region 50 may be coated with a hydrophobic agent and the second region 60 may be coated with a hydrophilic agent.
  • Formation of the condensation water 70 in the first region 50 upon heat exchange between high-temperature air flowing in the first region 50 and the refrigerant flowing in the refrigerant pipe 20 is prevented by coating the first region 50 with a hydrophobic agent. Discharge of the condensation water 70 formed in the second region 60 upon heat exchange between the high-temperature air passing through the first region 50 and the refrigerant flowing in the refrigerant pipe 20 is facilitated by coating the second region 60 with a hydrophilic agent.
  • the condensation water 70 is formed in the first region 50 coated with a hydrophobic agent, the condensation water 70 formed in the first region 50 is transferred together with the air flowing in the first region 50 to the second region 60.Then, in the second region 60 coated with a hydrophilic agent, the condensation water 70 formed in the first region 50 joins with the condensation water 70 formed in the second region 60 and flows out in a downward direction of the fin 30.
  • the hydrophilic agent may include a substance having at least one of a carboxyl group (-COOH),an alcohol group (-OH),an amine group (-NH2),a sulfonic acid group (-SO3H) and a urea group (-NHCONH2).
  • the hydrophobic agent comprises a substance comprising at least one of an inorganic nanopowder and a fluorine compound.
  • the hydrophobic agent may comprise a nanopowder containing at least one of Al2O3, TiO2and SiO2.
  • the fluorine compound used as the hydrophobic agent may comprise polytetrafluoroethylene (PTFE).
  • PTFE polytetrafluoroethylene
  • the coating may be carried out by dipcoating, spraycoating, vacuum evaporation or the like.
  • Dipcoating is a method for forming a coating film by immersing an object to be coated in a coating solution or slurry to form a precursor layer on a surface of the object and baking the precursor layer at a suitable temperature.
  • Spraycoating is a coating method which includes spraying compressed air or a coating material squeeze-pumped into a fog state on a surface of an object using a spray.
  • Vacuum evaporation is a coating method in which a metal is heated at a high-temperature to produce a vapor and the metal is deposited as a thin film using the vapor.
  • a patterning method may be used to coat the first region 50 and the second region 60 with a hydrophilic agent and/or a hydrophobic agent, respectively, which have different surface energies.
  • one of the first region 50 and the second region 60 is covered with a mask, the entire surface of the fin 30 is coated with a hydrophobic agent, the mask is removed and the region covered with the mask is coated with a hydrophilic agent.
  • one of the first region 50 and the second region 60 is covered with a mask, the entire surface of the fin 30 is coated with a hydrophilic agent, the mask is removed and the region covered with the mask is coated with a hydrophobic agent.
  • one of the first region 50andthe second region 60 is coated with a hydrophilic agent and the region not-coated with the hydrophilic agent is coated with a hydrophobic agent by dipcoating.
  • one of the first region 50 and the second region 60 is coated with a hydrophobic agent and the region not-coated with the hydrophilic agent is coated with a hydrophilic agent by dipcoating.
  • At least one surface of the fin 30 may be coated.
  • the refrigerant pipe 20 may be also coated with a hydrophilic agent or a hydrophobic agent.
  • thermo conductivity of the heat exchanger 10 is improved, surface roughness is decreased and discharge of the condensation water 70 is thus advantageous.
  • FIGS. 4A to 4D are views illustrating a boundary formed on a fin provided in the heat exchanger according to the present embodiment.
  • the first region 50 and the second region 60 are divided.
  • the boundary 80 may have a bent straight line shape.
  • the boundary 80 may have a curved shape.
  • the boundary 80 may have a curved shape including continuously repeated ridges and valleys.
  • the boundary 80 may have a shape in which a straight line is combined with a curve.
  • the shape of the boundary 80 may be varied and is not limited to the examples described above.
  • FIG. 5 is a perspective view illustrating a schematic structure of an outdoor unit for an air-conditioner, including the heat exchanger according to the present embodiment.
  • the air-conditioner may be classified into a separation-type and an integrated type.
  • the separation-type air-conditioner includes an indoor unit which is mounted indoors and absorbs indoor air and thereby exchanges heat with a refrigerant and emits the heat-exchanged air indoors again, and an outdoor unit which heat-exchanges the refrigerant received from the indoor unit with outside air and makes the refrigerant into a state which may heat-exchange with indoor air again and supplies the same to the indoor unit.
  • an outdoor unit for air conditioners 100 may include a body 1 to form an outer appearance and a partition 2 to divide an inner space of the body 1.
  • the inner space of the body 1 is divided into a heat-exchange area 3 and a compression area 4 by the partition 2.
  • the heat-exchange area 3 is provided with a heat exchanger 10 which is bent along the insides of a back surface 5 and a left surface 6 of the body 1, and an air blower 7 which admits outside air so as to facilitate heat-exchange by the heat exchanger 10.
  • An absorption unit 8 to absorb outside air is formed on the back surface 5 and the left surface 6 of the body 1and a discharge unit 11 to discharge the heat-exchanged air is formed on a front surface 9 of the body 1.
  • a compression unit 12 to compress the refrigerant supplied from the indoor unit (not shown) is mounted on the compression area 4 of the body 1.
  • a plurality of openings 14 to connect the compression area 4 to the outside are formed on a right surface 13 of the body 1.
  • the heat exchanger 10 may include a refrigerant pipe 20,through which the refrigerant flows, and a plurality of fins 30 connected to an outer circumference surface of the refrigerant pipe 20.
  • the fin 30 may include a first region 50 disposed upstream with respect to an air flow direction and a second region 60 which forms a boundary with the first region 50 and is disposed downstream with respect to the air flow direction.
  • the first region 50 and the second region 60 may be coated such that there is a difference in surface energy therebetween, so as to prevent occurrence of frosting on the fin 30.
  • the second region 60 may be coated with a hydrophilic agent or be uncoated.
  • the second region 60 may be coated with a hydrophobic agent or be uncoated.
  • the second region 60 may be coated with a hydrophilic agent or be uncoated.
  • the first region 50 may have a constant width.
  • the first region 50 may have a width of 5 mm or less in a longitudinal direction of the fin 30.
  • the heat exchanger 10 may be applied to an outdoor unit for air-conditioners 100 as well as to an indoor unit for air conditioners.
  • the heat exchanger 10 may be applied to not only to air conditioners but also to refrigerators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Other Air-Conditioning Systems (AREA)
EP20140169726 2013-06-13 2014-05-23 Échangeur thermique et unité extérieure pour climatiseur en disposant Withdrawn EP2813793A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130068035A KR20140145504A (ko) 2013-06-13 2013-06-13 열교환기 및 이를 포함하는 공기조화기용 실외기

Publications (1)

Publication Number Publication Date
EP2813793A1 true EP2813793A1 (fr) 2014-12-17

Family

ID=50819577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20140169726 Withdrawn EP2813793A1 (fr) 2013-06-13 2014-05-23 Échangeur thermique et unité extérieure pour climatiseur en disposant

Country Status (3)

Country Link
US (1) US20140366568A1 (fr)
EP (1) EP2813793A1 (fr)
KR (1) KR20140145504A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3594603A4 (fr) * 2017-03-31 2020-04-15 Daikin Industries, Ltd. Échangeur de chaleur et dispositif de conditionnement d'air
CN111059621A (zh) * 2019-12-31 2020-04-24 海信（山东）空调有限公司 一种防止空调出风口凝露的方法及空调室内机和空调器
DE102018131026A1 (de) * 2018-12-05 2020-06-10 Volkswagen Aktiengesellschaft Wärmeübertrager für ein Fahrzeug, insbesondere ein Elektrofahrzeug

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017070090A1 (fr) * 2015-10-23 2017-04-27 Carrier Corporation Système de conditionnement de température de l'air ayant un échangeur de chaleur résistant au givre
WO2019175973A1 (fr) * 2018-03-13 2019-09-19 日立ジョンソンコントロールズ空調株式会社 Échangeur de chaleur et climatiseur comportant celui-ci
US20210247126A1 (en) * 2018-05-10 2021-08-12 Nelumbo Inc. Phase Change Barriers and Methods of Use Thereof
KR102563739B1 (ko) * 2018-06-20 2023-08-17 한온시스템 주식회사 차량용 전장품 냉각 장치
JP6747488B2 (ja) * 2018-10-29 2020-08-26 ダイキン工業株式会社 熱交換器のフィンの製造方法
JP7159806B2 (ja) * 2018-11-21 2022-10-25 トヨタ自動車株式会社 熱交換器
US11338220B2 (en) * 2018-12-03 2022-05-24 Exaeris Water Innovations, Llc Atmospheric water generator apparatus
JP7513511B2 (ja) 2020-11-25 2024-07-09 日本パーカライジング株式会社 アルミニウムフィン材用親水性塗料と親水性塗膜及び親水性に優れたアルミニウムフィン材と熱交換器
CN113669949B (zh) * 2021-08-23 2024-09-17 银川华誉智慧能源科技有限公司 一种防止化霜水二次冻结的热泵机组、一种热泵机组及防止其化霜水二次冻结的方法
US12120854B2 (en) * 2021-12-10 2024-10-15 Ciena Corporation Hybrid liquid and air cooling in networking equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192513A (ja) * 2006-01-20 2007-08-02 Mitsubishi Electric Corp 空気調和機および熱交換器のクリーニング方法
JP2011185589A (ja) * 2010-02-09 2011-09-22 Sumitomo Light Metal Ind Ltd 空気調和機用サーペンタイン熱交換器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5985456A (en) * 1997-07-21 1999-11-16 Miguel Albert Capote Carboxyl-containing polyunsaturated fluxing adhesive for attaching integrated circuits
JP2000074588A (ja) * 1998-08-31 2000-03-14 Toshiba Corp 空気調和機用フィンチューブ型熱交換器
JP4361343B2 (ja) * 2003-10-03 2009-11-11 ダイキン工業株式会社 対水接触角の制御方法
JP2010095655A (ja) * 2008-10-17 2010-04-30 Fujifilm Corp 防カビ作用を有する親水性組成物及び親水性部材
KR20110139283A (ko) * 2009-03-19 2011-12-28 다이킨 고교 가부시키가이샤 공기 조화 장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192513A (ja) * 2006-01-20 2007-08-02 Mitsubishi Electric Corp 空気調和機および熱交換器のクリーニング方法
JP2011185589A (ja) * 2010-02-09 2011-09-22 Sumitomo Light Metal Ind Ltd 空気調和機用サーペンタイン熱交換器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3594603A4 (fr) * 2017-03-31 2020-04-15 Daikin Industries, Ltd. Échangeur de chaleur et dispositif de conditionnement d'air
US11828477B2 (en) 2017-03-31 2023-11-28 Daikin Industries, Ltd. Heat exchanger and air conditioner
DE102018131026A1 (de) * 2018-12-05 2020-06-10 Volkswagen Aktiengesellschaft Wärmeübertrager für ein Fahrzeug, insbesondere ein Elektrofahrzeug
CN111059621A (zh) * 2019-12-31 2020-04-24 海信（山东）空调有限公司 一种防止空调出风口凝露的方法及空调室内机和空调器

Also Published As

Publication number Publication date
KR20140145504A (ko) 2014-12-23
US20140366568A1 (en) 2014-12-18

Similar Documents

Publication Publication Date Title
EP2813793A1 (fr) Échangeur thermique et unité extérieure pour climatiseur en disposant
CN103958995B (zh) 用于液态干燥剂空气调节器的热量和质量交换器
US20150260436A1 (en) Heat exchanger and method of manufacturing the same, and outdoor unit for air conditioner having the heat exchanger
RU2722930C2 (ru) Многоходовой микроканальный теплообменник с множественными изогнутыми пластинами
EP2455687B1 (fr) Échangeur de chaleur externe et pompe thermique en disposant
WO2014012287A1 (fr) Ensemble de climatisation équipé d'un condenseur évaporatif à serpentin de couplage avec matériau de remplissage
CN111059802A (zh) 一种冷凝装置和具有其的空调系统
CN103940154A (zh) 一种复合结构湿膜表冷器
US20040035561A1 (en) Heat exchanger
WO2017017789A1 (fr) Échangeur de chaleur et appareil à cycle frigorifique
JP2002013841A (ja) 蒸発器および冷凍機
WO2020178977A1 (fr) Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle de réfrigération
CN110748983B (zh) 冷凝换热器及具有其的室外机
JP2003343942A (ja) 蒸発器
CN209716294U (zh) 一种铝衬板与铜管翅片的连接结构
JP2001317854A (ja) 冷凍冷蔵庫
WO2016119369A1 (fr) Unité refroidisseur d'eau/chauffe-eau comprenant un condenseur à évaporation et échangeur de chaleur composé du type à tube et à plaque
Comino et al. Design of highly compact indirect evaporative coolers
US11035620B1 (en) Loop heat pipe transfer system with manifold
KR20070073165A (ko) 열교환기 및 이를 사용하는 공기 조화기
CN202853209U (zh) 一种防腐蚀不沾水空调器
JP7112168B2 (ja) 熱交換器及び冷凍サイクル装置
US20200363093A1 (en) Systems and Methods for Warm Air Pre-Cooling
JP2000161884A (ja) 内面溝付伝熱管
WO2016036732A1 (fr) Échangeur de chaleur à microcanaux tolérant au gel pour pompe à chaleur et applications de réfrigération

Legal Events

Date Code Title Description
17P Request for examination filed

Effective date: 20140523

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

R17P Request for examination filed (corrected)

Effective date: 20150611

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20170615