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US20030024695A1 - Heat exchanger having parallel connected refrigerant coil pipes - Google Patents

Heat exchanger having parallel connected refrigerant coil pipes Download PDF

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Publication number
US20030024695A1
US20030024695A1 US10/097,940 US9794002A US2003024695A1 US 20030024695 A1 US20030024695 A1 US 20030024695A1 US 9794002 A US9794002 A US 9794002A US 2003024695 A1 US2003024695 A1 US 2003024695A1
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United States
Prior art keywords
refrigerant
coil pipes
heat exchanger
refrigerant coil
parallel
Prior art date
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Abandoned
Application number
US10/097,940
Inventor
Wu Ho-Hsin
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Individual
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Individual
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    • 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
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0417—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the heat exchange medium flowing through sections having different heat exchange capacities or for heating/cooling the heat exchange medium at different temperatures
    • 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
    • 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
    • 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
    • F28D2021/007—Condensers

Definitions

  • the present invention relates to heat exchangers utilized in refrigerators or air conditioners, and particularly to a heat exchanger having refrigerant coil pipes connected in parallel which can improve the efficiency of refrigerators or air conditioners.
  • FIG. 1 One prior art gas-cooling condenser air conditioners used in the prior art air conditioner is illustrated in FIG. 1.
  • the condenser is mainly formed a plurality of fins which are arranged in parallel.
  • the refrigerant coil pipes are transversally arranged. Only one refrigerant coil pipe is used, which are reciprocally wound.
  • the high pressure refrigerant compressed by an air compressor is guided from an upper side of the condenser into the refrigerant coil pipe so as to flow downwards for being condensed.
  • a motor is used to drive the fan so that outer air is guided into the space between the refrigerant coil pipes in the condenser and then heat is transferred from the fins and refrigerant coil pipe.
  • the exhausting heat from the condenser and the refrigerant are absorbed by the air and then is exhausted with the air.
  • the primary object of the present invention is to provide a heat exchanger having refrigerant coil pipes connected in parallel, wherein parallel connected coil pipes are used to replace a single one coil pipe.
  • the refrigerant tube in a plurality of tubes are condensed at the same time so that the condensing capacity per unit time is increased, i.e., the condensing speed is increased without increasing the applied pressure.
  • the condensing speed is increased and the power is saved.
  • the pressure of a compressor is unnecessary to be reduced.
  • the present invention is a novel method for improving EER.
  • Another object of the present invention is to provide a heat exchanger having refrigerant coil pipes connected in parallel, wherein inlets of the refrigerant guide-in pipes are connected in parallel.
  • the high temperature and high pressure from the air compressor is driven downwards into a refrigerant guide-out pipe and then into a plurality of refrigerant coil pipes. After the refrigerant is condensed in the refrigerant coil pipes, the liquefied refrigerant flows out from a refrigerant guide-out pipe and then to an expansion valve.
  • FIG. 1 is a schematic view of a prior art fin type condenser.
  • FIG. 2 is a schematic view of a fin type heat exchanger of the present invention.
  • FIG. 2A is a schematic perspective view of the fin type heat exchanger of the present invention.
  • FIG. 3 is a front perspective view of the fin type heat exchanger of the present invention.
  • FIG. 4 shows an application of the fin type heat exchanger of the present invention.
  • the heat exchanger of the present invention is a fin type heat exchanger 10 .
  • a refrigerant tubes 122 passes through a plurality of fins 110 which are arranged longitudinally.
  • the refrigerant tubes 122 are serially connected transversally so as to form a plurality of layers of refrigerant coil pipes 120 .
  • Inlets of the refrigerant coil pipes 120 are parallelly connected to a refrigerant guide-in pipe 124 .
  • the high pressure and high temperature refrigerant enters into the refrigerant guide-in pipe 124 and then flows into each layer of refrigerant coil pipe.
  • the refrigerant guide-in pipes 124 are connected in parallel instead of only one refrigerant guide-in pipe being used. Therefore, the refrigerant in the plurality of refrigerant guide-in pipes is condensed at the same time so that the volume of condensing fluid is increased. That is to say, the condensing speed is increased without needing to increase the applied pressure. Thereby, power is saved by high speed condensing (the condensing fluid per unit time is increased).
  • a fin set having three rows is used as an example. Since the number of rows is small, to have a sufficient length to liquefy the refrigerant, in this embodiment, the upper and lower refrigerant tubes 122 are connected to one another and then are connected to an adjacent refrigerant tube 122 . Therefore, the tube is wound three times so as to complete various layers of refrigerant coil pipes 120 . It should be noted that the way of winding can be varied with the numbers of banks of the holes on the condenser. For example, when the number of banks is increased, the refrigerant tubes 122 of various banks can be serially connected directly, which is mainly determined according to the capacity of the condenser.
  • FIG. 4 an application of the condenser of the present invention is illustrated.
  • a first and second heat exchangers 10 , 10 ′ are installed.
  • High pressure gasified refrigerant is driven to the first heat exchanger 10 .
  • the refrigerant enters into the second heat exchanger 10 ′ for being further condensed.
  • a way of guiding the refrigerant out of the refrigerant coil pipe 120 of the fin type heat exchanger 10 will be illustrated in the following.
  • the outlets of the various layers of refrigerant coil pipes 120 of the fin type heat exchanger 10 are connected in parallel to a refrigerant guide-out pipe 126 for collecting the condensed liquefying refrigerant.
  • various of refrigerant guide-in pipes 120 ′ are grouped.
  • the outlets of various groups are connected in parallel to a respective refrigerant guide-out pipe 126 ′. Then all the refrigerant guide-out pipes 126 ′ are collected.
  • parallel connected coil pipes are used to replace a single one coil pipe.
  • the refrigerant tube in a plurality of tubes are condensed at the same time so that the condensing capacity per unit time is increased, i.e., the condensing speed is increased without increasing the applied pressure.
  • the condensing speed is increased and the power is saved.
  • the pressure of a compressor is unnecessary to be reduced.
  • the present invention is a novel method for improving EER.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A heat exchanger having refrigerant coil pipes connected in parallel is disclosed. The heat exchanger has a plurality of heat dissipating fins and a plurality of layers of refrigerant coil pipes which pass through the fins transversally. The plurality of refrigerant coil pipes are connected in parallel and then high pressure refrigerant driving by an air compressor is force into the refrigerant coil pipes. Air channels are formed between the refrigerant coil pipes and the fins.

Description

    FIELD OF THE INVENTION
  • The present invention relates to heat exchangers utilized in refrigerators or air conditioners, and particularly to a heat exchanger having refrigerant coil pipes connected in parallel which can improve the efficiency of refrigerators or air conditioners. [0001]
    • BACKGROUND OF THE INVENTION
  • One prior art gas-cooling condenser air conditioners used in the prior art air conditioner is illustrated in FIG. 1. The condenser is mainly formed a plurality of fins which are arranged in parallel. The refrigerant coil pipes are transversally arranged. Only one refrigerant coil pipe is used, which are reciprocally wound. The high pressure refrigerant compressed by an air compressor is guided from an upper side of the condenser into the refrigerant coil pipe so as to flow downwards for being condensed. The condensed process, a motor is used to drive the fan so that outer air is guided into the space between the refrigerant coil pipes in the condenser and then heat is transferred from the fins and refrigerant coil pipe. The exhausting heat from the condenser and the refrigerant are absorbed by the air and then is exhausted with the air. [0002]
  • However, the above mentioned refrigerant coil pipe has the following disadvantages: [0003]
  • 1. Only one refrigerant coil pipe is used. High pressure gasified refrigerant is filled into the tube from the upper side thereof, while as the refrigerant flow to the rear section of the refrigerant coil pipe (about ⅙ or ¼ of the whole length distanced from the distal end of the tube), the refrigerant tube is almost liquefied. The cooling energy is consumed and since the tube is too long so that the fiction with the wall of tube will consume the energy of the refrigerant. [0004]
  • 2. Too many bending portions of the refrigerant coil pipes cause the power to be further consumed. [0005]
  • For a long time, the manufacturers are make their efforts to develop more efficient condensers, and thus water-cooled and vaporized heated exchangers are developed. However, the EER value is still confined in about 2.0. It is difficult to be improved. [0006]
    • SUMMARY OF THE INVENTION
  • Accordingly, the primary object of the present invention is to provide a heat exchanger having refrigerant coil pipes connected in parallel, wherein parallel connected coil pipes are used to replace a single one coil pipe. Thereby, the refrigerant tube in a plurality of tubes are condensed at the same time so that the condensing capacity per unit time is increased, i.e., the condensing speed is increased without increasing the applied pressure. Thereby, the condensing speed is increased and the power is saved. The pressure of a compressor is unnecessary to be reduced. Thereby, the present invention is a novel method for improving EER. [0007]
  • Another object of the present invention is to provide a heat exchanger having refrigerant coil pipes connected in parallel, wherein inlets of the refrigerant guide-in pipes are connected in parallel. The high temperature and high pressure from the air compressor is driven downwards into a refrigerant guide-out pipe and then into a plurality of refrigerant coil pipes. After the refrigerant is condensed in the refrigerant coil pipes, the liquefied refrigerant flows out from a refrigerant guide-out pipe and then to an expansion valve. [0008]
  • The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.[0009]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic view of a prior art fin type condenser. [0010]
  • FIG. 2 is a schematic view of a fin type heat exchanger of the present invention. [0011]
  • FIG. 2A is a schematic perspective view of the fin type heat exchanger of the present invention. [0012]
  • FIG. 3 is a front perspective view of the fin type heat exchanger of the present invention. [0013]
  • FIG. 4 shows an application of the fin type heat exchanger of the present invention.[0014]
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • The objects, features and effects of the present invention will be described hereinafter by various embodiments and drawings. However, the present invention is not confined by those described herein. Other embodiments modified from the following description are within the spirits and scopes of the present invention. Therefore, the present invention is defined by the appended claims. [0015]
  • Referring to FIGS. 2 and 3, the heat exchanger of the present invention is a fin [0016] type heat exchanger 10. In the heat exchanger, a refrigerant tubes 122 passes through a plurality of fins 110 which are arranged longitudinally. The refrigerant tubes 122 are serially connected transversally so as to form a plurality of layers of refrigerant coil pipes 120. Inlets of the refrigerant coil pipes 120 are parallelly connected to a refrigerant guide-in pipe 124. The high pressure and high temperature refrigerant enters into the refrigerant guide-in pipe 124 and then flows into each layer of refrigerant coil pipe. Namely, the refrigerant guide-in pipes 124 are connected in parallel instead of only one refrigerant guide-in pipe being used. Therefore, the refrigerant in the plurality of refrigerant guide-in pipes is condensed at the same time so that the volume of condensing fluid is increased. That is to say, the condensing speed is increased without needing to increase the applied pressure. Thereby, power is saved by high speed condensing (the condensing fluid per unit time is increased).
  • Referring to FIG. 2A, in this embodiment, a fin set having three rows is used as an example. Since the number of rows is small, to have a sufficient length to liquefy the refrigerant, in this embodiment, the upper and [0017] lower refrigerant tubes 122 are connected to one another and then are connected to an adjacent refrigerant tube 122. Therefore, the tube is wound three times so as to complete various layers of refrigerant coil pipes 120. It should be noted that the way of winding can be varied with the numbers of banks of the holes on the condenser. For example, when the number of banks is increased, the refrigerant tubes 122 of various banks can be serially connected directly, which is mainly determined according to the capacity of the condenser.
  • Referring to FIG. 4, an application of the condenser of the present invention is illustrated. A first and [0018] second heat exchangers 10, 10′ are installed. High pressure gasified refrigerant is driven to the first heat exchanger 10. After condensed, the refrigerant enters into the second heat exchanger 10′ for being further condensed.
  • A way of guiding the refrigerant out of the [0019] refrigerant coil pipe 120 of the fin type heat exchanger 10 will be illustrated in the following. The outlets of the various layers of refrigerant coil pipes 120 of the fin type heat exchanger 10 are connected in parallel to a refrigerant guide-out pipe 126 for collecting the condensed liquefying refrigerant. In another example illustrated by the second heat exchanger 10′, various of refrigerant guide-in pipes 120′ are grouped. The outlets of various groups are connected in parallel to a respective refrigerant guide-out pipe 126′. Then all the refrigerant guide-out pipes 126′ are collected.
  • In summary, in the present invention, parallel connected coil pipes are used to replace a single one coil pipe. Thereby, the refrigerant tube in a plurality of tubes are condensed at the same time so that the condensing capacity per unit time is increased, i.e., the condensing speed is increased without increasing the applied pressure. Thereby, the condensing speed is increased and the power is saved. The pressure of a compressor is unnecessary to be reduced. Thereby, the present invention is a novel method for improving EER. [0020]
  • The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims. [0021]

Claims (4)

What is claimed is:
1. A heat exchanger having refrigerant coil pipes connected in parallel; the heat exchanger having a plurality of heat dissipating fins and a plurality of layers of refrigerant coil pipes which pass through the fins transversally, characterized in that: the plurality of refrigerant coil pipes are connected in parallel and then high pressure refrigerant driving by an air compressor is force into the refrigerant coil pipes; and air channels are formed between the refrigerant coil pipes and the fins.
2. The heat exchanger as claimed in claim 1, wherein inlets of various layers of refrigerant coil pipes are connected in parallel so that the high pressure refrigerant of the air compressor is driven into a refrigerant guide-in pipe and then further enters into the plurality of layers of refrigerant coil pipes.
3. The heat exchanger as claimed in claim 1, wherein outlets of the plurality of layers of refrigerant coil pipes are connected in parallel for being collected, thereby, the condensed refrigerant is guided out.
4. The heat exchanger as claimed in claim 1, wherein various of refrigerant guide-in pipes are grouped; outlets of various groups are connected in parallel to a respective refrigerant guide-out pipe; and then all the refrigerant guide-out pipes are collected.
US10/097,940 2001-08-02 2002-03-15 Heat exchanger having parallel connected refrigerant coil pipes Abandoned US20030024695A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW090213095 2001-08-02
TW090213095U TW495012U (en) 2001-08-02 2001-08-02 Heat exchanger featured with parallel coils

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007080483A2 (en) * 2006-01-08 2007-07-19 Obrist Engineering Gmbh Heat exchanger and group of heat exchangers
FR2952173A1 (en) * 2009-11-03 2011-05-06 Peugeot Citroen Automobiles Sa Condenser for cooling circuit of heating-air conditioning installation in vehicle e.g. car, has unit comprising de-superheating part and inlet, and another unit comprising of sub-part that contains condensation part
US20140262167A1 (en) * 2013-03-14 2014-09-18 Mao-Ho Kuo Coil assembly
US20150308294A1 (en) * 2013-01-10 2015-10-29 Panasonic Intellectual Property Management Co., Ltd. Rankine cycle apparatus and combined heat and power system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117781494A (en) * 2016-11-30 2024-03-29 台达电子工业股份有限公司 Temperature control equipment and its heat exchange unit
TWI626409B (en) * 2016-11-30 2018-06-11 台達電子工業股份有限公司 Temperature control equipment and heat exchanging unit thereof
US20220099343A1 (en) * 2019-03-05 2022-03-31 Mitsubishi Electric Corporation Heat exchanger and refrigeration cycle apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007080483A2 (en) * 2006-01-08 2007-07-19 Obrist Engineering Gmbh Heat exchanger and group of heat exchangers
WO2007080483A3 (en) * 2006-01-08 2008-05-08 Obrist Engineering Gmbh Heat exchanger and group of heat exchangers
FR2952173A1 (en) * 2009-11-03 2011-05-06 Peugeot Citroen Automobiles Sa Condenser for cooling circuit of heating-air conditioning installation in vehicle e.g. car, has unit comprising de-superheating part and inlet, and another unit comprising of sub-part that contains condensation part
US20150308294A1 (en) * 2013-01-10 2015-10-29 Panasonic Intellectual Property Management Co., Ltd. Rankine cycle apparatus and combined heat and power system
US9638066B2 (en) * 2013-01-10 2017-05-02 Panasonic Intellectual Property Management Co., Ltd. Rankine cycle apparatus and combined heat and power system
US20140262167A1 (en) * 2013-03-14 2014-09-18 Mao-Ho Kuo Coil assembly

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