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US20080078186A1 - Heat exchanger and an air conditioner containing the heat exchanger - Google Patents

Heat exchanger and an air conditioner containing the heat exchanger Download PDF

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Publication number
US20080078186A1
US20080078186A1 US11/855,049 US85504907A US2008078186A1 US 20080078186 A1 US20080078186 A1 US 20080078186A1 US 85504907 A US85504907 A US 85504907A US 2008078186 A1 US2008078186 A1 US 2008078186A1
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United States
Prior art keywords
heat transfer
transfer plate
heat
heat exchanger
air conditioner
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Abandoned
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US11/855,049
Inventor
Ai Guo CAO
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Individual
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    • 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
    • F28F13/182—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing especially adapted for evaporator or condenser surfaces
    • 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
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • 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
    • F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/023—Mounting details thereof
    • 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

Definitions

  • the present invention is related to a heat exchanger and an air conditioner containing the heat exchanger, and more particularly to an indoor thermoelectric air conditioner containing the heat exchanger.
  • a heat exchanger of the prior art mounted in an indoor thermoelectric air conditioner is provided with a heat transfer plate, and multiple heat sink fins are fixed on one side of the heat transfer plate. Those heat sink fins are vertically erected on the side of the heat transfer plate.
  • the indoor heat exchanger is connected to a cold air generation chip by means of an insulation heat transfer plate; and the cold air generated from the chip is transferred to those heat sink fins.
  • the heat exchanger is put in erected position for use.
  • a fan is usually mounted to the upper edge of the heat transfer plate to blow air crossing those heat sink fins to produce cold air delivered into the room.
  • the primary purpose of the present invention is to provide an exchanger that warrants well-facilitated air vane and an indoor thermoelectric air conditioner containing the heat exchanger.
  • a heat exchanger of the present invention is comprised of a heat transfer plate containing an elevation area for it to be erected on a bottom in an outer casing of an indoor thermoelectric air conditioners; and multiple heat sink fins arranged in parallel with one another are fixed on a surface of a side of the heat transfer plate abutted to the elevation area. All those heat sink fins are in parallel with the elevation area and their free ends are inclined downward in the direction facing the elevation area.
  • those heat sink fins are soldered and fixed to the heat transfer plate.
  • a hydrophilic film is coated on an outer surface of each heat sink fin.
  • An insulation heat transfer layer is form on an outer surface of one side of the heat transfer plate opposite to the side fixed with those heat sink fins.
  • the heat transfer plate is made of aluminum and the insulation heat transfer layer is related to a layer of aluminum oxide (Al 2 O 3 ) formed on the surface of the heat transfer plate using micro-arc oxidization (MAO) method.
  • Al 2 O 3 aluminum oxide
  • MAO micro-arc oxidization
  • the indoor thermoelectric air conditioner of the present invention is provided with an outer casing; and the heat exchanger is disposed on a bottom of the outer casing.
  • the heat exchanger is provided with a heat transfer plate and an elevation area for the heat exchanger to be erected on a bottom in the outer casing of the indoor thermoelectric air conditioner.
  • Multiple heat sink fins arranged in parallel with one another are fixed on one side abutted to the elevation area of the heat transfer; and a thermoelectric component is adhered to another side of the heat transfer plate.
  • a fan is fixed in the outer casing to blow hot air or cold air radiated from the heat exchanger to a space where the hot or cold air is needed.
  • Those heat sink fins on the heat exchanger are arranged in parallel with the elevation area and their free ends are inclined downward in a direction facing the elevation area.
  • the fan in the outer casing is fixed to one side of the heat transfer plate of the heat exchanger; and the air blown by the fan is in a direction in parallel with the surface of the heat transfer plate and the elevation area of the heat transfer plate.
  • those heat sink fins are soldered and fixed to the heat transfer plate.
  • a hydrophilic film is coated on an outer surface of each heat sink fin.
  • An insulation heat transfer layer is form on an outer surface of one side of the heat transfer plate opposite to the side fixed with those heat sink fins.
  • the heat transfer plate is made of aluminum and the insulation heat transfer layer is related to a layer of aluminum oxide (Al 2 O 3 ) formed on the surface of the heat transfer plate using micro-arc oxidization (MAO) method.
  • Al 2 O 3 aluminum oxide
  • MAO micro-arc oxidization
  • the present invention provides multiple beneficial results including insurance of well-facilitated air vane.
  • those heat sink fins of the heat exchanger of the present invention are arranged in parallel with its elevation area and all their free ends are inclined downward in a direction facing the elevation area. Therefore, when the heat exchanger is in erected portion for use, the fan blows the air from side of the heat sink fins, and an airway is formed between two heat sink fins in parallel with each other and any water drip condensed on the heat sink will flow downward by central gravity since the heat sink fin is made inclined downward to clear away from the airway.
  • the hydrophilic film coated on the outer surface of each heat sink also help frustrate vapors in the air to condense on the heat sink fin to further warrant well-facilitated air vane.
  • an airway is formed between two abutted heat sink fins arranged in parallel with each other and the slanted heat sink fin causes water condensed from vapors in the air to flow down due to central gravity to separate the waterway from the airway in warranting well-facilitated air vane.
  • FIG. 1 is an exploded view showing a construction of an indoor thermoelectric air conditioner of the present invention.
  • FIG. 2 is a side view showing a construction of a heat exchanger of the present invention.
  • FIG. 3 is a rear view showing the construction of the heat exchanger of the present invention.
  • a heat exchanger of the present invention is comprised of a heat transfer plate 4 made of aluminum; an elevation area 1 is disposed to the heat transfer plate 4 for it to be erected on a bottom in an outer casing 7 of an indoor thermoelectric air conditioner; multiple heat sink fins 5 arranged in parallel with one another are fixed on one side of the heat transfer plate 4 at where abutted to the elevation area 1 ; those heat sink fins 5 are fixed by soldering to the heat transfer plate 4 and arranged in parallel with the elevation area 1 of the heat transfer plate 4 . All free ends of those heat sink fines 5 are inclined downward in a direction facing the elevation area 1 .
  • a hydrophilic film is formed on an outer surface of each heat sink fin 5 using electrophoresis (or by coating nano-ulra hydrophilic liquid).
  • a layer of aluminum oxide (Al 2 O 3 ) is formed using micro-arc oxidization (MAO) method on the aluminum transfer plate 4 on one side opposite to the side fixed with heat sink fins 5 to improve heat or cold transfer efficiency of the heat exchanger for saving energy.
  • MAO micro-arc oxidization
  • an indoor thermoelectric air conditioner of the present invention contains a heat exchanger 3 erected on a bottom in an outer casting 7 of the air conditioner; and the heat exchanger 3 is attached with a thermoelectric component (not illustrated) on a side opposite to the side fixed with those heat sink fins 5 .
  • a fan 8 is disposed in the outer casing 7 to blow hot air or cold air radiated from the heat exchanger 3 to a space where the hot or cold air is needed.
  • the fan 8 in the outer casing 7 is fixed to a side of the heat transfer plate 4 of the heat exchanger 3 for the air is blown in a direction in parallel with a surface of the heat transfer plate 4 and the elevation area 1 of the heat transfer plate 4 at the same time.
  • a drainage pan 6 is disposed below the heat exchanger 3 to collect water condensed on the surface of each heat sink fin 5 and discharge the water out of the outer casing 7 thus to warrant a well-facilitated air vane of the thermoelectric air conditioner.
  • those heat sink fins 5 are not necessarily arranged in strictly parallel with one another as long as each and all of them are inclined downward; and the direction of the air blown by the fan 8 may be completely in parallel with the surface of the heat transfer plate 4 and the elevation area of the heat transfer plate 4 at the same time, or in parallel with the surface to dissipate heat of each heat sink fin 5 as long as the direction of the air blown by the fan 8 is different from that of the water flows on the surface of each heat sink fin 5 to warrant maintaining a well-facilitated air vane.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

A heat exchanger and an indoor thermoelectric air conditioner containing the heat exchanger, the heat exchanger includes a heat transfer plate provided with an elevation area for the plate to be erected on bottom in outer casing of the air conditioner; multiple heat sink fins parallel with one another are fixed on one side of the plate at where abutted to the elevation area; free ends of those fins are inclined downward in a direction facing the elevation area; a fan blows the air from both sides of each fin to create airway between any two abutted fins; water of vapors in the air condensed on surface of each fin fall off downward due to central gravity thus to separate waterway from airway to warrant well-facilitate air vane of the air conditioner; and outer surface of each fin being applied with a hydrophilic film to frustrate condensation to further insurance of the well-facilitated air vane.

Description

    BACKGROUND OF THE INVENTION
  • (a) Field of the Invention
  • The present invention is related to a heat exchanger and an air conditioner containing the heat exchanger, and more particularly to an indoor thermoelectric air conditioner containing the heat exchanger.
  • (b) Description of the Prior Art
  • A heat exchanger of the prior art mounted in an indoor thermoelectric air conditioner is provided with a heat transfer plate, and multiple heat sink fins are fixed on one side of the heat transfer plate. Those heat sink fins are vertically erected on the side of the heat transfer plate. The indoor heat exchanger is connected to a cold air generation chip by means of an insulation heat transfer plate; and the cold air generated from the chip is transferred to those heat sink fins. In the prior art, the heat exchanger is put in erected position for use. A fan is usually mounted to the upper edge of the heat transfer plate to blow air crossing those heat sink fins to produce cold air delivered into the room. Whereas the temperature difference between surfaces of those heat sink fins and the ambient air is comparatively greater, vapors in the air will condense on surfaces of those heat sink fins into small water drips and the fan is located above the heat transfer plate, the direction of the air blown by the fan is the same as that those water drips drop. Therefore, those water drips flowing in a direction of following that the air is blown could easily blockade the air direction.
    • SUMMARY OF THE INVENTION
  • The primary purpose of the present invention is to provide an exchanger that warrants well-facilitated air vane and an indoor thermoelectric air conditioner containing the heat exchanger.
  • To achieve the purpose, a heat exchanger of the present invention is comprised of a heat transfer plate containing an elevation area for it to be erected on a bottom in an outer casing of an indoor thermoelectric air conditioners; and multiple heat sink fins arranged in parallel with one another are fixed on a surface of a side of the heat transfer plate abutted to the elevation area. All those heat sink fins are in parallel with the elevation area and their free ends are inclined downward in the direction facing the elevation area.
  • According to a structure described above, those heat sink fins are soldered and fixed to the heat transfer plate.
  • A hydrophilic film is coated on an outer surface of each heat sink fin.
  • An insulation heat transfer layer is form on an outer surface of one side of the heat transfer plate opposite to the side fixed with those heat sink fins.
  • The heat transfer plate is made of aluminum and the insulation heat transfer layer is related to a layer of aluminum oxide (Al2O3) formed on the surface of the heat transfer plate using micro-arc oxidization (MAO) method.
  • The indoor thermoelectric air conditioner of the present invention is provided with an outer casing; and the heat exchanger is disposed on a bottom of the outer casing. The heat exchanger is provided with a heat transfer plate and an elevation area for the heat exchanger to be erected on a bottom in the outer casing of the indoor thermoelectric air conditioner. Multiple heat sink fins arranged in parallel with one another are fixed on one side abutted to the elevation area of the heat transfer; and a thermoelectric component is adhered to another side of the heat transfer plate. A fan is fixed in the outer casing to blow hot air or cold air radiated from the heat exchanger to a space where the hot or cold air is needed. Those heat sink fins on the heat exchanger are arranged in parallel with the elevation area and their free ends are inclined downward in a direction facing the elevation area. The fan in the outer casing is fixed to one side of the heat transfer plate of the heat exchanger; and the air blown by the fan is in a direction in parallel with the surface of the heat transfer plate and the elevation area of the heat transfer plate.
  • According to a structure described above, those heat sink fins are soldered and fixed to the heat transfer plate.
  • A hydrophilic film is coated on an outer surface of each heat sink fin.
  • An insulation heat transfer layer is form on an outer surface of one side of the heat transfer plate opposite to the side fixed with those heat sink fins.
  • The heat transfer plate is made of aluminum and the insulation heat transfer layer is related to a layer of aluminum oxide (Al2O3) formed on the surface of the heat transfer plate using micro-arc oxidization (MAO) method.
  • In comparison with the prior art, the present invention provides multiple beneficial results including insurance of well-facilitated air vane. Whereas those heat sink fins of the heat exchanger of the present invention are arranged in parallel with its elevation area and all their free ends are inclined downward in a direction facing the elevation area. Therefore, when the heat exchanger is in erected portion for use, the fan blows the air from side of the heat sink fins, and an airway is formed between two heat sink fins in parallel with each other and any water drip condensed on the heat sink will flow downward by central gravity since the heat sink fin is made inclined downward to clear away from the airway. The hydrophilic film coated on the outer surface of each heat sink also help frustrate vapors in the air to condense on the heat sink fin to further warrant well-facilitated air vane.
  • With the heat exchanger mounted in the indoor thermoelectric air conditioner and the fan disposed on one side of the heat transfer plate to blow the air towards the surface of the heat transfer plate and the elevation area of the heat transfer plate, an airway is formed between two abutted heat sink fins arranged in parallel with each other and the slanted heat sink fin causes water condensed from vapors in the air to flow down due to central gravity to separate the waterway from the airway in warranting well-facilitated air vane.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an exploded view showing a construction of an indoor thermoelectric air conditioner of the present invention.
  • FIG. 2 is a side view showing a construction of a heat exchanger of the present invention.
  • FIG. 3 is a rear view showing the construction of the heat exchanger of the present invention.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • A heat exchanger of the present invention is comprised of a heat transfer plate 4 made of aluminum; an elevation area 1 is disposed to the heat transfer plate 4 for it to be erected on a bottom in an outer casing 7 of an indoor thermoelectric air conditioner; multiple heat sink fins 5 arranged in parallel with one another are fixed on one side of the heat transfer plate 4 at where abutted to the elevation area 1; those heat sink fins 5 are fixed by soldering to the heat transfer plate 4 and arranged in parallel with the elevation area 1 of the heat transfer plate 4. All free ends of those heat sink fines 5 are inclined downward in a direction facing the elevation area 1.
  • To prevent vapors in the air from being condensed into water drips on a surface of each heat sink fin 5 when the thermoelectric air conditioner is generating cold air; a hydrophilic film is formed on an outer surface of each heat sink fin 5 using electrophoresis (or by coating nano-ulra hydrophilic liquid).
  • A layer of aluminum oxide (Al2O3) is formed using micro-arc oxidization (MAO) method on the aluminum transfer plate 4 on one side opposite to the side fixed with heat sink fins 5 to improve heat or cold transfer efficiency of the heat exchanger for saving energy.
  • In a preferred embodiment of an indoor thermoelectric air conditioner of the present invention contains a heat exchanger 3 erected on a bottom in an outer casting 7 of the air conditioner; and the heat exchanger 3 is attached with a thermoelectric component (not illustrated) on a side opposite to the side fixed with those heat sink fins 5. A fan 8 is disposed in the outer casing 7 to blow hot air or cold air radiated from the heat exchanger 3 to a space where the hot or cold air is needed. The fan 8 in the outer casing 7 is fixed to a side of the heat transfer plate 4 of the heat exchanger 3 for the air is blown in a direction in parallel with a surface of the heat transfer plate 4 and the elevation area 1 of the heat transfer plate 4 at the same time. That is, the air is blown by the fan 8 towards sides of those heat sink fins. An airway is formed between any two abutted heat sink fins 5 in parallel with each other and a flow direction of water on a surface of each heat sink fin 5 and that of the air blown by the fan 8 are different from each other to avoid possible blockade of the airway due to that the water flows in the same direction as that of the air. In the preferred embodiment, a drainage pan 6 is disposed below the heat exchanger 3 to collect water condensed on the surface of each heat sink fin 5 and discharge the water out of the outer casing 7 thus to warrant a well-facilitated air vane of the thermoelectric air conditioner.
  • Of course, those heat sink fins 5 are not necessarily arranged in strictly parallel with one another as long as each and all of them are inclined downward; and the direction of the air blown by the fan 8 may be completely in parallel with the surface of the heat transfer plate 4 and the elevation area of the heat transfer plate 4 at the same time, or in parallel with the surface to dissipate heat of each heat sink fin 5 as long as the direction of the air blown by the fan 8 is different from that of the water flows on the surface of each heat sink fin 5 to warrant maintaining a well-facilitated air vane.

Claims (10)

1. A heat exchanger comprising a heat transfer plate; an elevation area for the heat transfer plate to be erected on a bottom in an outer casing of an indoor thermoelectric air conditioner being provided to the heat transfer; multiple heat sink fins arranged in parallel with one another being fixed on one side of the heat transfer plate abutted to the elevation area; those heat sink fins being arranged in parallel with the elevation area; and all free ends of those heat sink fins being inclined downward in a direction facing the elevation area.
2. The heat exchanger as claimed in claim 1, wherein those heat sink fins are fixed by soldering to the heat transfer plate.
3. The heat exchanger as claimed in claim 1 or 2, wherein a layer of hydrophilic film is disposed on an outer surface of each heat sink fin.
4. The heat exchanger as claimed in claim 1 or 2, wherein those an insulation heat transfer layer is disposed on an outer surface of one side of the heat transfer plate opposite to the side of the heat transfer plate where those heat sink fins are fixed.
5. The heat exchanger as claimed in claim 4, wherein the heat transfer plate is made of aluminum, and the insulation heat transfer layer is related to an aluminum oxide (Al2O3) layer formed using micro-arc oxidization (MAO) method on the surface of the aluminum heat transfer plate.
6. An indoor thermoelectric air conditioner comprising an outer casing; a heat exchanger erected on a bottom in an outer casting of the air conditioner; a heat transfer plate being disposed to the heat exchanger; an elevation area being disposed to the heat transfer plate for the heat transfer plate to be erected on the bottom in the outer casing of the indoor thermoelectric air conditioner; multiple heat sink fins arranged in parallel with one another being fixed to one side of the heat transfer plate at where abutted to the elevation area; the heat exchanger being attached with a thermoelectric component on a side opposite to the side fixed with those heat sink fins; a fan being disposed in the outer casing to blow hot air or cold air radiated from the heat exchanger to a space where the hot or cold air is needed; the fan in the outer casing being fixed to a side of the heat transfer plate of the heat exchanger for the air is blown in a direction in parallel with a surface of the heat transfer plate and the elevation area of the heat transfer plate at the same time.
7. The indoor thermoelectric air conditioner as claimed in claim 6, wherein those heat sink fins are fixed by soldering to the heat transfer plate.
8. The indoor thermoelectric air conditioner as claimed in claim 6 or 7, wherein a layer of hydrophilic film is disposed on an outer surface of each heat sink fin.
9. The indoor thermoelectric air conditioner as claimed in claim 6 or 7, wherein those an insulation heat transfer layer is disposed on an outer surface of one side of the heat transfer plate opposite to the side of the heat transfer plate where those heat sink fins are fixed.
10. The indoor thermoelectric air conditioner as claimed in claim 9, wherein the heat transfer plate is made of aluminum, and the insulation heat transfer layer is related to an aluminum oxide (Al2O3) layer formed using micro-arc oxidization (MAO) method on the surface of the aluminum heat transfer plate.
US11/855,049 2006-09-29 2007-09-13 Heat exchanger and an air conditioner containing the heat exchanger Abandoned US20080078186A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200610062940 2006-09-29
CN200610062940.9 2006-09-29
CN2007100848773A CN101055110B (en) 2006-09-29 2007-02-14 Heat exchanger and indoor thermoelectric air conditioner possessing same
CN200710084877.3 2007-02-14

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US20080078186A1 true US20080078186A1 (en) 2008-04-03

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CN (1) CN101055110B (en)
AU (1) AU2007216900B8 (en)

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AU2007216900B2 (en) 2009-06-11
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AU2007216900A1 (en) 2008-04-17
CN101055110B (en) 2010-05-26

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