US20020000309A1 - Heat exchanger having superheated coolant bypass passage - Google Patents

Heat exchanger having superheated coolant bypass passage Download PDF

Info

Publication number
US20020000309A1
US20020000309A1 US09/895,087 US89508701A US2002000309A1 US 20020000309 A1 US20020000309 A1 US 20020000309A1 US 89508701 A US89508701 A US 89508701A US 2002000309 A1 US2002000309 A1 US 2002000309A1
Authority
US
United States
Prior art keywords
coolant
heat exchanger
tank part
plates
flow passage
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.)
Abandoned
Application number
US09/895,087
Inventor
Jae Kim
Jae Cho
Beom Yoo
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.)
WiniaDimchae Co Ltd
Original Assignee
Mando Climate Control Corp
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 Mando Climate Control Corp filed Critical Mando Climate Control Corp
Assigned to MANDO CLIMATE CONTROL CORPORATION reassignment MANDO CLIMATE CONTROL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHO, JAE HUN, KIM, JAE HOON, YOO, BEOM KUL
Publication of US20020000309A1 publication Critical patent/US20020000309A1/en
Abandoned 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/028—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0325—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
    • F28D1/0341—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members with U-flow or serpentine-flow inside the conduits

Definitions

  • the present invention relates to a vehicular heat exchanger including a laminated type evaporator; and, more particularly, to a heat exchanger capable of reducing friction resistance to a coolant fluid flowing therein and improving the efficiency of a heat exchanging performance by employing a superheated coolant bypass passage that allows superheated coolant gas to bypass a heat-exchanging region.
  • an evaporator for use in vehicle air conditioners includes a coolant inlet, a coolant outlet and a coolant flow passage formed therebetween. Heat exchange is performed when a coolant circulates through the coolant flow passage.
  • the heat exchanger includes a coolant flow passage 102 formed by stacking a plurality of laminated plates 101 , cooling fins 103 installed between the laminated plates 101 , and a tank part 106 installed on top of the laminated plates 101 and connected to a coolant inlet 104 and a coolant outlet 106 .
  • a coolant is introduced to the tank part 106 through the coolant inlet 104 and circulates through patterns of the flow passage 102 formed on each of the laminated plates 101 .
  • a heat exchanger including a flow passage 2 formed by stacking a plurality of laminated plates 1 , cooling fins 3 installed between the plates 1 , and a tank part 6 prepared on top of the plates 1 and connected to a coolant inlet 4 and a coolant outlet 5 , wherein the tank part 6 has a bypass means for allowing the coolant in a gas state to move toward the coolant outlet 5 without returning to the flow passage 2 .
  • FIG. 1 is a perspective view of a conventional heat exchanger
  • FIG. 2 provides a perspective view of a heat exchanger in accordance with a preferred embodiment of the present invention.
  • FIG. 3 depicts a schematic diagram for illustrating an operational state of the heat exchanger in accordance with a preferred embodiment of the present invention.
  • the heat exchanger includes a passage 2 formed by stacking a plurality of laminated plates 1 , cooling fins 3 installed between the plates 1 , a tank part 6 formed on top of the plates 1 and connected to a coolant inlet 4 and a coolant outlet 5 . Further, bypass holes 7 are formed on upper portion of the tank part 6 in a zigzag pattern.
  • a coolant in a liquid state provided to the tank part 6 through the coolant inlet 4 circulates through the flow passage 2 patterned on the laminated plates 1 and absorbs heat from air flowing around the cooling fins 3 .
  • some of the liquid coolant becomes gas or superheated gas. Since the coolant in the superheated gas state has a smaller density than the coolant in the liquid state, the superheated coolant gas rises upward to the tank part 6 and moves to the coolant outlet 5 through the bypass holes 7 without invading the flow passage where the heat exchange is being performed. Accordingly, it becomes possible that only the coolant in the liquid state flows in the heat-exchanging region such that the flow resistance of the coolant can be reduced and the efficiency of the heat exchange can be greatly improved.
  • an upper portion of the tank part 6 is expanded and the coolant in the liquid state flows at a bottom portion of the tank part 6 .
  • the coolant in the gas state transferred to the tank part 6 from the flow passage 2 flows through the expanded upper portion of the tank part 4 and moves toward the coolant outlet 5 without returning to the flow passage 2 .
  • the heat exchanger in accordance with the present invention includes a means for allowing a coolant in a superheated gas state to bypass a flow passage where heat exchange is being performed.
  • resistance to the coolant flow and heat loss in the heat exchanging process can be reduced.
  • the efficiency of the heat exchanger can be greatly improved and an overload of the air compressor can be prevented.

Landscapes

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

Abstract

A heat exchanger includes a flow passage formed by stacking a plurality of laminated plates, cooling fins installed between the plates, and a tank part prepared on top of the plates and connected to a coolant inlet and a coolant outlet. The tank part has a bypass means for allowing the coolant in a gas state to move toward the coolant outlet without returning to the flow passage.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a vehicular heat exchanger including a laminated type evaporator; and, more particularly, to a heat exchanger capable of reducing friction resistance to a coolant fluid flowing therein and improving the efficiency of a heat exchanging performance by employing a superheated coolant bypass passage that allows superheated coolant gas to bypass a heat-exchanging region. [0001]
    • BACKGROUND OF THE INVENTION
  • In general, an evaporator for use in vehicle air conditioners includes a coolant inlet, a coolant outlet and a coolant flow passage formed therebetween. Heat exchange is performed when a coolant circulates through the coolant flow passage. [0002]
  • Referring to FIG. 1, there is provided a conventional vehicular heat exchanger having a structure as described above. The heat exchanger includes a [0003] coolant flow passage 102 formed by stacking a plurality of laminated plates 101, cooling fins 103 installed between the laminated plates 101, and a tank part 106 installed on top of the laminated plates 101 and connected to a coolant inlet 104 and a coolant outlet 106. A coolant is introduced to the tank part 106 through the coolant inlet 104 and circulates through patterns of the flow passage 102 formed on each of the laminated plates 101. When the coolant travels through the flow passages 102, heat is exchanged between the cooling fins 103 and air flow generated by a blower prepared at one side of the heat exchanger. When the heat exchanging process is completed, the coolant is converted to superheated gas and transferred to an air compressor through the coolant outlet 105.
  • However, this conventional heat exchanger presents certain drawbacks. When the coolant in a liquid state absorbs the heat by circulating the flow passages, some of the coolant is changed into gas or superheated gas and cannot absorb the heat any more. Nevertheless, the coolant in the gas or the superheated gas state still remains in the heat-exchanging region, thereby reducing an effective area of the heat exchanging process and deteriorating the efficiency of the evaporator. Further, since a volume of the coolant increases when the coolant undergoes a phase change from a liquid state to a gas state, resistance of the coolant traveling through the flow passage is also increased and the efficiency of the heat exchanger is greatly reduced. [0004]
    • SUMMARY OF THE INVENTION
  • It is, therefore, an object of the present invention to provide a heat exchanger capable of reducing resistance against a coolant traveling through a flow passage and increasing an effective heat-exchanging area. [0005]
  • In accordance with the present invention, there is provided a heat exchanger including a [0006] flow passage 2 formed by stacking a plurality of laminated plates 1, cooling fins 3 installed between the plates 1, and a tank part 6 prepared on top of the plates 1 and connected to a coolant inlet 4 and a coolant outlet 5, wherein the tank part 6 has a bypass means for allowing the coolant in a gas state to move toward the coolant outlet 5 without returning to the flow passage 2.
    •  BRIEF DESCRIPTION OF THE DRAWINGS
  • The above and other objects and features of the present invention will become apparent from the following description of preferred embodiments given in conjunction with the accompanying drawings, in which: [0007]
  • FIG. 1 is a perspective view of a conventional heat exchanger; [0008]
  • FIG. 2 provides a perspective view of a heat exchanger in accordance with a preferred embodiment of the present invention; and [0009]
  • FIG. 3 depicts a schematic diagram for illustrating an operational state of the heat exchanger in accordance with a preferred embodiment of the present invention.[0010]
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring to FIG. 2, there is shown a heat exchanger in accordance with a preferred embodiment of the present invention. The heat exchanger includes a [0011] passage 2 formed by stacking a plurality of laminated plates 1, cooling fins 3 installed between the plates 1, a tank part 6 formed on top of the plates 1 and connected to a coolant inlet 4 and a coolant outlet 5. Further, bypass holes 7 are formed on upper portion of the tank part 6 in a zigzag pattern.
  • An operation of the heat exchanger in accordance with the present invention will be described hereinafter with reference to FIG. 3. [0012]
  • A coolant in a liquid state provided to the [0013] tank part 6 through the coolant inlet 4 circulates through the flow passage 2 patterned on the laminated plates 1 and absorbs heat from air flowing around the cooling fins 3. During this heat-exchanging process, some of the liquid coolant becomes gas or superheated gas. Since the coolant in the superheated gas state has a smaller density than the coolant in the liquid state, the superheated coolant gas rises upward to the tank part 6 and moves to the coolant outlet 5 through the bypass holes 7 without invading the flow passage where the heat exchange is being performed. Accordingly, it becomes possible that only the coolant in the liquid state flows in the heat-exchanging region such that the flow resistance of the coolant can be reduced and the efficiency of the heat exchange can be greatly improved.
  • In accordance with another embodiment of the present invention, an upper portion of the [0014] tank part 6 is expanded and the coolant in the liquid state flows at a bottom portion of the tank part 6. The coolant in the gas state transferred to the tank part 6 from the flow passage 2 flows through the expanded upper portion of the tank part 4 and moves toward the coolant outlet 5 without returning to the flow passage 2. Thus, the same effects as described above can be obtained.
  • As described above, the heat exchanger in accordance with the present invention includes a means for allowing a coolant in a superheated gas state to bypass a flow passage where heat exchange is being performed. Thus, resistance to the coolant flow and heat loss in the heat exchanging process can be reduced. Further, the efficiency of the heat exchanger can be greatly improved and an overload of the air compressor can be prevented. [0015]
  • While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may by made without departing from the spirit and scope of the invention as defined in the following claims. [0016]

Claims (3)

What is claimed is:
1. A heat exchanger including a flow passage formed by stacking a plurality of plates with cooling fins installed between the plates and a tank part located on top of the plates and connected to a coolant inlet and a coolant outlet, wherein heat exchange is performed between air and a coolant through cooling fins when the coolant circulates through the flow passage formed by the plates, the tank part comprising:
a bypass means for allowing the coolant in a gas state to move to the coolant outlet without returning to the flow passage.
2. The heat exchanger of claim 1, wherein the bypass means is a plurality of bypass holes formed at the upper portion of the tank part in a zigzag pattern.
3. The heat exchanger of claim 1, wherein the bypass means is formed by expanding an upper portion of the tank part.
US09/895,087 2000-06-30 2001-06-29 Heat exchanger having superheated coolant bypass passage Abandoned US20020000309A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2000-37073 2000-06-30
KR10-2000-0037073A KR100375607B1 (en) 2000-06-30 2000-06-30 Heat exchanger with over saturation coolant by pass function

Publications (1)

Publication Number Publication Date
US20020000309A1 true US20020000309A1 (en) 2002-01-03

Family

ID=19675332

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/895,087 Abandoned US20020000309A1 (en) 2000-06-30 2001-06-29 Heat exchanger having superheated coolant bypass passage

Country Status (3)

Country Link
US (1) US20020000309A1 (en)
JP (1) JP2002054859A (en)
KR (1) KR100375607B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040226706A1 (en) * 2003-02-27 2004-11-18 Peter Zurawel Heat exchanger plates and manufacturing method
US20150241129A1 (en) * 2014-02-27 2015-08-27 Hangzhou Sanhua Research Institute Co., Ltd. Heat exchanger
US10066882B2 (en) 2014-02-27 2018-09-04 Hangzhou Sanhua Research Institute Co., Ltd. Connecting member and heat exchanger having the connecting member
WO2018229234A1 (en) * 2017-06-14 2018-12-20 Valeo Systemes Thermiques Evaporator having two layers, in particular for a motor vehicle air conditioning circuit, comprising u-shaped tubes and a corresponding air conditioning circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101408906B1 (en) * 2007-03-21 2014-06-18 한라비스테온공조 주식회사 Evaporator
KR101371536B1 (en) * 2007-04-17 2014-03-07 한라비스테온공조 주식회사 Heat Exchanger

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100344992B1 (en) * 1999-09-30 2002-07-19 만도공조 주식회사 Fluid path pattern of heat exchanger

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040226706A1 (en) * 2003-02-27 2004-11-18 Peter Zurawel Heat exchanger plates and manufacturing method
US6837305B2 (en) 2003-02-27 2005-01-04 Dana Canada Corporation Heat exchanger plates and manufacturing method
US20060169444A1 (en) * 2003-02-27 2006-08-03 Peter Zurawel Heat exchanger plates and methods for manufacturing heat exchanger plates
US7681313B2 (en) 2003-02-27 2010-03-23 Dana Canada Corporation Heat exchanger plates and methods for manufacturing heat exchanger plates
US20150241129A1 (en) * 2014-02-27 2015-08-27 Hangzhou Sanhua Research Institute Co., Ltd. Heat exchanger
CN104879955A (en) * 2014-02-27 2015-09-02 杭州三花研究院有限公司 Heat exchanger
US10066882B2 (en) 2014-02-27 2018-09-04 Hangzhou Sanhua Research Institute Co., Ltd. Connecting member and heat exchanger having the connecting member
US10330398B2 (en) * 2014-02-27 2019-06-25 Hangzhou Sanhua Research Institute Co., Ltd. Heat exchanger
WO2018229234A1 (en) * 2017-06-14 2018-12-20 Valeo Systemes Thermiques Evaporator having two layers, in particular for a motor vehicle air conditioning circuit, comprising u-shaped tubes and a corresponding air conditioning circuit
FR3067797A1 (en) * 2017-06-14 2018-12-21 Valeo Systemes Thermiques EVAPORATOR HAVING TWO TABS, ESPECIALLY FOR A MOTOR VEHICLE AIR CONDITIONING CIRCUIT, COMPRISING "U" TUBES AND CORRESPONDING AIR CONDITIONING CIRCUIT

Also Published As

Publication number Publication date
KR100375607B1 (en) 2003-03-15
JP2002054859A (en) 2002-02-20
KR20020002777A (en) 2002-01-10

Similar Documents

Publication Publication Date Title
JP4078766B2 (en) Heat exchanger
WO2014132602A1 (en) Stacked heat exchanger
CN101182975A (en) Cooling module
US6431264B2 (en) Heat exchanger with fluid-phase change
KR100687637B1 (en) Heat exchanger
JP3965901B2 (en) Evaporator
US7121331B2 (en) Heat exchanger
US20020000309A1 (en) Heat exchanger having superheated coolant bypass passage
US6397938B1 (en) Heat exchanger
JP2007139288A (en) Heat exchanger and air conditioner
KR102609386B1 (en) Heat exchanger and air conditioner for vehicle
JP4731212B2 (en) Heat exchanger
JP2018035802A (en) Combined type heat exchanger
JP3812021B2 (en) Laminate heat exchanger
JPH0596773U (en) Heat exchanger
JP2903745B2 (en) Stacked refrigerant evaporator
EP3921587A1 (en) Universal heat exchanger
US11820199B2 (en) Heat exchanger
KR102692196B1 (en) Air conditioning system for vehicle
JPH025326Y2 (en)
JP4006821B2 (en) Condenser
KR100201693B1 (en) Heat exchanger for automobile
JP3861787B2 (en) Composite heat exchanger and automobile equipped with the same
JP4930447B2 (en) Exhaust heat recovery unit
JP2001012883A (en) Heat exchanger

Legal Events

Date Code Title Description
AS Assignment

Owner name: MANDO CLIMATE CONTROL CORPORATION, KOREA, REPUBLIC

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, JAE HOON;CHO, JAE HUN;YOO, BEOM KUL;REEL/FRAME:011981/0256

Effective date: 20010622

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION