CN101061365A - Laminated heat exchanger - Google Patents

Laminated heat exchanger Download PDF

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Publication number
CN101061365A
CN101061365A CNA200580038240XA CN200580038240A CN101061365A CN 101061365 A CN101061365 A CN 101061365A CN A200580038240X A CNA200580038240X A CN A200580038240XA CN 200580038240 A CN200580038240 A CN 200580038240A CN 101061365 A CN101061365 A CN 101061365A
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CN
China
Prior art keywords
refrigerant
intermediate header
cold
flat
producing medium
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.)
Pending
Application number
CNA200580038240XA
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Chinese (zh)
Inventor
森大辅
东山直久
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Resonac Holdings Corp
Original Assignee
Showa Denko KK
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Filing date
Publication date
Application filed by Showa Denko KK filed Critical Showa Denko KK
Publication of CN101061365A publication Critical patent/CN101061365A/en
Pending legal-status Critical Current

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    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated 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
    • 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
    • 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
    • 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
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—Evaporators

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

Abstract

An evaporator 1 implemented by a laminated heat exchanger has a refrigerant inlet header section 3, a refrigerant outlet header section 4, and a plurality of intermediate header sections 5 to 11. Among the header sections 3 to 11, the sixth intermediate header section 11 has a refrigerant channel which allows flow of refrigerant in the longitudinal direction thereof and whose downstream end with respect to the refrigerant flow direction is closed, and causes refrigerant to dividedly flow into a plurality of refrigerant flow tube portions. The refrigerant that has flown into the refrigerant inlet header section 3 from a refrigerant inlet 12 flows into the refrigerant outlet header section 4 through the refrigerant flow tube portions and through the intermediate header sections 5 to 11 and flows out from a refrigerant outlet 13. A resistive plate portion 38 is provided within the sixth intermediate header section 11 so as to block the refrigerant channel thereof extending in the longitudinal direction thereof. A resistive hole 36 is formed in the resistive plate portion 38 so as to impart resistance to refrigerant that flows through the refrigerant channel. When this laminated heat exchanger is applied to an evaporator of a vehicle air conditioner, temperature distribution of discharged air can be made uniform even when air-velocity distribution becomes nonuniform on the upstream side with respect to the air flow direction.

Description

Laminated heat exchanger
The cross reference of related application
The application proposes according to 35 U.S.C § 111 (a), and requires the applying date interests in the provisional application 60/609,831 of submission on September 15th, 2004 according to 35 U.S.C § 111 (b) according to 35 U.S.C § 119 (e) (1).
Technical field
The present invention relates to a kind of laminated heat exchanger, particularly a kind of laminated heat exchanger that is used as evaporimeter in air conditioner for motor vehicle, this air conditioner for motor vehicle are the kind of refrigeration cycle that is loaded in the vehicle.
In the text and in the appended claims, Fig. 1,3 and 11 top, bottom, left-hand side and right-hand side be called as respectively " on ", D score, " left side " and " right side ".The downstream (arrow X indicated direction among Fig. 1 and 11) that air flows is called as " preceding ", and its opposite side is called as " back ".
Background technology
Usually the laminated heat exchanger that is widely used as the evaporimeter of air conditioner for motor vehicle comprises a plurality of flat, hollow members serve (for example, with reference to open (kokai) No.2003-14392 of Japanese patent application laid-open).Each flat, hollow members serve comprises the metallic plate that two vertical prolongations and its peripheral edge portion combine.Between two metallic plates and on air-flow direction, be formed with the refrigerant flow tube portion of two vertically extending protrusions with being spaced apart from each other.In the top and bottom of each in described two refrigerant flow tube portion each is connected with a collector formation portion of protruding.The collector formation portion of the adjacent flat, hollow members serve of arranging with overlapped way combines.The gap is passed through as air in gap between the refrigerant flow tube portion of adjacent flat, hollow members serve.The collector formation portion of flat, hollow members serve forms has the refrigerant inlet header section of refrigerant inlet, has the refrigerant outlet collector section of refrigerant outlet, and a plurality of intermediate header.
The laminated heat exchanger of describing in open source literature comprises: the refrigerant inlet header section; Be arranged in the refrigerant outlet collector section of refrigerant inlet header section upstream with respect to air-flow direction; Be arranged in first intermediate header below the refrigerant inlet header section; With first intermediate header, second intermediate header that arranged in series arranges that is in line; Be arranged in above second intermediate header and be in line the 3rd intermediate header of arranged in series of refrigerant inlet header section; With respect to air-flow direction be arranged in the 3rd intermediate header the upstream and be in line the 4th intermediate header of arranged in series of refrigerant outlet collector section; Be arranged in the 5th intermediate header below the 4th intermediate header; Be arranged in below the refrigerant outlet collector section and be in line the 6th intermediate header of arranged in series of the 5th intermediate header.The refrigerant flow tube portion of flat, hollow members serve is set up between refrigerant inlet header section and first intermediate header, between second intermediate header and the 3rd intermediate header, between the 4th intermediate header and the 5th intermediate header and between the 6th intermediate header and the refrigerant outlet collector section and is communicated with.The 3rd intermediate header and the 4th intermediate header communicate with each other by the communication passage that is formed on the flat, hollow members serve.In refrigerant inlet header section, second intermediate header and the 6th intermediate header each is as cold-producing medium shunting collector section, this cold-producing medium shunting collector section has and allows cold-producing medium vertically to flow and with respect to the coolant channel of the downstream end sealing of flow of refrigerant direction along it, and causes cold-producing medium to be flow to a plurality of refrigerant flow tube portion by branch.In refrigerant outlet collector section, first intermediate header and the 5th intermediate header each is as the cold-producing medium collector section of confluxing, this cold-producing medium collector section of confluxing has and allows cold-producing medium vertically to flow and the coolant channel open with respect to the downstream end of flow of refrigerant direction along it, and causes cold-producing medium to flow out from a plurality of refrigerant flow tube portion convergeing to together.The coolant channel of refrigerant inlet header section is communicated with refrigerant inlet; The coolant channel of refrigerant outlet collector section is communicated with refrigerant outlet; The coolant channel of first intermediate header is communicated with the coolant channel of second intermediate header; The coolant channel of the 5th intermediate header is communicated with the coolant channel of the 6th intermediate header.
This laminated heat exchanger is designed for tapped refrigerant equably, this cold-producing medium flows to and set up the refrigerant flow tube portion that is communicated with between refrigerant inlet header section and first intermediate header, flow to and between second intermediate header and the 3rd intermediate header, set up the refrigerant flow tube portion that is communicated with, flow to and between the 4th intermediate header and the 5th intermediate header, set up the refrigerant flow tube portion that is communicated with, and flow to the refrigerant flow tube portion that foundation is communicated with between the 6th intermediate header and refrigerant outlet collector section.In the laminated heat exchanger of in above-mentioned open source literature, describing, in order to make the cold-producing medium that flows to the coolant channel of second intermediate header from the coolant channel of first intermediate header be diffused into whole second intermediate header, and in order to make the cold-producing medium that flows to the coolant channel of the 6th intermediate header from the coolant channel of the 5th intermediate header be diffused into whole the 6th intermediate header, between first intermediate header and second intermediate header, and setting has the flat of cold-producing medium by the hole between the 5th intermediate header and the 6th intermediate header; On second intermediate header and the 6th intermediate header, on the downstream surface with respect to the flow of refrigerant direction of each flat, a guide part is set, so that diffuse through the cold-producing medium of relevant cold-producing medium by the hole.
Yet, in the evaporimeter of air conditioner for motor vehicle,,, may become inhomogeneous along the air velocity distribution of left and right directions just at rear side at upstream side with respect to air-flow direction, this depends on the installation method of evaporimeter, and the shape of evaporator shell.Under these circumstances, evenly divide the laminated heat exchanger of the feature that flows to ownership cryogen flow duct portion for having cold-producing medium, use the air conditioner for motor vehicle evaporimeter of this laminated heat exchanger discharged air temperature may occur and distribute promptly the Temperature Distribution of the air by this evaporimeter along the left and right directions uneven problem that becomes.In other words, the temperature of discharging air is high regional higher of rear side air velocity, and the temperature of discharge air is lower in the low zone of rear side air velocity.In addition, in the low zone of rear side air velocity, condensed water may freeze on the surface of refrigerant flow tube portion and fin.
The objective of the invention is to address the above problem, and provide a kind of laminated heat exchanger, when it is applied to the evaporimeter of air conditioner for motor vehicle for example,, also can provide the discharge air of uniformity of temperature profile even inhomogeneous with respect to the upstream side air velocity distribution of air-flow direction.
Summary of the invention
To achieve these goals, the present invention comprises following pattern.
1) a kind of laminated heat exchanger comprises a plurality of flat, hollow members serve, and each flat, hollow members serve comprises: two vertical prolongs and metallic plate that peripheral edge portion combines; Be formed on the refrigerant flow tube portion of the protrusion between described two metallic plates; Collector formation portion with each protrusion that is connected in the opposite end of refrigerant flow tube portion, the collector formation portion of the adjacent flat, hollow members serve of arranging with overlapped way combines, the gap is passed through as air in gap between the refrigerant flow tube portion of adjacent flat, hollow members serve, the collector formation portion of flat, hollow members serve forms has the refrigerant inlet header section of refrigerant inlet, refrigerant outlet collector section and a plurality of intermediate header with refrigerant outlet, in all collector sections at least one is as cold-producing medium shunting collector section, this cold-producing medium shunting collector section has and allows cold-producing medium vertically to flow and with respect to the coolant channel of the downstream end sealing of flow of refrigerant direction along it, and cause cold-producing medium to be flow to a plurality of refrigerant flow tube portion by branch, cold-producing medium flows to the refrigerant inlet header section from refrigerant inlet, flow through refrigerant flow tube portion and intermediate header, flowing to refrigerant outlet collector Duan Bingcong refrigerant outlet flows out, wherein at least one in cold-producing medium shunting collector section resistance part (resistive portion) is set, so that provide resistance to the cold-producing medium that flows through along the coolant channel of the longitudinal extension of cold-producing medium shunting collector section.
2) according to paragraph 1) laminated heat exchanger, wherein said resistance part comprises the resistance hole that is formed on the resistive plate portion, this resistive plate portion is arranged in this cold-producing medium shunting collector section in the mode of the coolant channel that blocks cold-producing medium shunting collector section.
3) according to paragraph 2) laminated heat exchanger, wherein said resistive plate portion is the part of a metal flat flat board, this metallic flat plate holder is in the centre and the combination with it of two metallic plates that are used to form flat, hollow members serve, and this part of this flat is positioned at cold-producing medium shunting collector section; The part of another collector section that has coolant channel being arranged in of this flat is formed with cold-producing medium by the hole, and this cold-producing medium has the cross-sectional area that equates with coolant channel by the hole.
4) according to paragraph 2) laminated heat exchanger, wherein at least one cold-producing medium shunting collector section, a plurality of resistive plate portion are set, and in each resistive plate portion, are formed with resistance hole.
5) according to paragraph 4) laminated heat exchanger, the resistance hole mixed-arrangement of different size wherein.
6) according to paragraph 4) laminated heat exchanger, the resistance hole mixed-arrangement of different vertical position in corresponding coolant channel wherein.
7) according to paragraph 2) laminated heat exchanger, wherein in each in a plurality of cold-producing mediums shunting collector sections at least one resistive plate portion is set, and in this resistive plate portion, forms resistance hole.
8) according to paragraph 7) laminated heat exchanger, the resistance hole mixed-arrangement of different size wherein.
9) according to paragraph 7) laminated heat exchanger, the resistance hole mixed-arrangement of different vertical position in corresponding coolant channel wherein.
10) according to paragraph 2) laminated heat exchanger, wherein the size of resistance hole be cold-producing medium shunting collector section coolant channel cross-sectional area 1/60 to 1/10.
11) according to paragraph 2) laminated heat exchanger, wherein the downstream side surface with respect to the flow of refrigerant direction of resistive plate portion is provided with a guide part, so that near the guiding refrigerant flow tube portion the refrigerant flow direction resistive plate portion by resistance hole.
12) according to paragraph 1) laminated heat exchanger, wherein said flat, hollow members serve comprises two vertical extensions and the refrigerant flow tube portion that is provided with at each interval along air-flow direction, and be arranged on two collector formation portions on the upper end of flat, hollow members serve and in the bottom each, wherein two collector formation portions link to each other with the corresponding upper end of described two refrigerant flow tube portion and are spaced apart from each other along air-flow direction, and two collector formation portions link to each other with the corresponding lower end of described two refrigerant flow tube portion and are spaced apart from each other along air-flow direction in addition.
13) according to paragraph 12) laminated heat exchanger, comprise the refrigerant inlet header section, be arranged in the refrigerant outlet collector section of refrigerant inlet header section upstream with respect to air-flow direction, be arranged in first intermediate header below the refrigerant inlet header section, with first intermediate header, second intermediate header that arranged in series arranges that is in line, be arranged in above second intermediate header and be in line the 3rd intermediate header of arranged in series of refrigerant inlet header section, with respect to air-flow direction be arranged in the 3rd intermediate header the upstream and be in line the 4th intermediate header of arranged in series of refrigerant outlet collector section, be arranged in the 5th intermediate header below the 4th intermediate header, and be arranged in below the refrigerant outlet collector section and with the 5th intermediate header be in line the 6th intermediate header of arranged in series, wherein refrigerant inlet header section, first intermediate header, in second intermediate header and the 3rd intermediate header each all comprises with respect to the air-flow direction collector formation portion of the flat, hollow members serve that is provided with of side towards downstream; In refrigerant outlet collector section, the 4th intermediate header, the 5th intermediate header and the 6th intermediate header each all comprises with respect to the collector formation portion of air-flow direction towards the flat, hollow members serve of upstream side setting; The refrigerant flow tube portion of flat, hollow members serve is set up between refrigerant inlet header section and first intermediate header, between second intermediate header and the 3rd intermediate header, between the 4th intermediate header and the 5th intermediate header, between the 6th intermediate header and the refrigerant outlet collector section and is communicated with; The 3rd intermediate header and the 4th intermediate header communicate with each other by the communication passage that is formed in the flat, hollow members serve; In refrigerant inlet header section, second intermediate header and the 6th intermediate header each is as cold-producing medium shunting collector section, this cold-producing medium shunting collector section has and allows cold-producing medium vertically to flow and with respect to the coolant channel of the downstream end sealing of flow of refrigerant direction along it, and causes cold-producing medium to be flow to a plurality of refrigerant flow tube portion by branch; In refrigerant outlet collector section, first intermediate header and the 5th intermediate header each is as the cold-producing medium collector section of confluxing, this cold-producing medium collector section of confluxing has and allows cold-producing medium vertically to flow and the coolant channel open with respect to the downstream end of flow of refrigerant direction along it, and causes cold-producing medium to flow out from a plurality of refrigerant flow tube portion convergeing to together; The coolant channel of refrigerant inlet header section is communicated with refrigerant inlet; The coolant channel of refrigerant outlet collector section is communicated with refrigerant outlet; The coolant channel of first intermediate header is communicated with the coolant channel of second intermediate header; The coolant channel of the 5th intermediate header is communicated with the coolant channel of the 6th intermediate header.
14) according to paragraph 1) laminated heat exchanger, wherein said flat, hollow members serve comprises: hairpin refrigerant flow tube portion, this refrigerant flow tube portion comprise the linear portion of two vertically extending protrusions that are spaced apart from each other along air-flow direction and are used for setting up the protrusion interconnecting part that is communicated with between the upper end of the linear portion of these two protrusions; And two collector formation portions that are arranged on the flat, hollow members serve bottom, these two collector formation portions link to each other with the corresponding opposite end of this refrigerant flow tube portion and are spaced apart from each other along air-flow direction.
15) according to paragraph 14) laminated heat exchanger, comprise the refrigerant inlet header section, with the refrigerant inlet header section refrigerant outlet collector section that arranged in series arranges that is in line, be arranged in first intermediate header in refrigerant inlet header section downstream with respect to air-flow direction, and with respect to air-flow direction be arranged in refrigerant outlet collector section downstream and be in line second intermediate header of arranged in series of first intermediate header, wherein each in refrigerant inlet header section and the refrigerant outlet collector section all comprises the collector formation portion of the flat, hollow members serve that is provided with towards upstream side with respect to air-flow direction; In first intermediate header and second intermediate header each all comprises with respect to the air-flow direction collector formation portion of the flat, hollow members serve that is provided with of side towards downstream; The refrigerant flow tube portion of flat, hollow members serve and is set up between second intermediate header and refrigerant outlet collector section and is communicated with between the refrigerant inlet header section and first intermediate header; In the refrigerant inlet header section and second intermediate header each is as cold-producing medium shunting collector section, this cold-producing medium shunting collector section has and allows cold-producing medium vertically to flow and with respect to the coolant channel of the downstream end sealing of flow of refrigerant direction along it, and causes cold-producing medium to be flow to a plurality of refrigerant flow tube portion by branch; In the refrigerant outlet collector section and first intermediate header each is as the cold-producing medium collector section of confluxing, this cold-producing medium collector section of confluxing has and allows cold-producing medium vertically to flow and the coolant channel open with respect to the downstream end of flow of refrigerant direction along it, and causes cold-producing medium to flow out from a plurality of refrigerant flow tube portion convergeing to together; The coolant channel of refrigerant inlet header section is communicated with refrigerant inlet; The coolant channel of refrigerant outlet collector section is communicated with refrigerant outlet; The coolant channel of first intermediate header is communicated with the coolant channel of second intermediate header.
16) a kind of kind of refrigeration cycle comprises compressor, condenser and evaporimeter, and wherein this evaporimeter comprises according to paragraph 1) to 15) in any one laminated heat exchanger.
17) kind of refrigeration cycle a kind of wherein being equipped with according to paragraph 16) is as the vehicle of air conditioner for motor vehicle.
According to paragraph 1) laminated heat exchanger, on at least one cold-producing medium shunting collector section, the resistance part is set, so that provide resistance to the cold-producing medium that flows through along the coolant channel of the longitudinal extension of cold-producing medium shunting collector section, thereby can reduce the refrigerant amount that flows through the resistance part in the cold-producing medium shunting collector section.Therefore, when this laminated heat exchanger is used as the evaporimeter of air conditioner for motor vehicle, even air velocity distribution becomes inhomogeneous at the upstream side with respect to air-flow direction, and cause descending of in cold-producing medium shunting collector section resistance part thereupon, also can avoid extreme decline by this regional air themperature with respect to air velocity in the respective regions in the downstream of flow of refrigerant direction.Therefore, the temperature of discharge air can evenly distribute.In addition, can prevent that in the low zone of air velocity condensed water from freezing on surfaces of refrigerant flow tube portions and fin surface.
Paragraph 2) laminated heat exchanger allows the resistance part relatively easily to be shaped.
Paragraph 3) resistive plate portion that laminated heat exchanger allows to have resistance hole relatively easily is provided with.In addition, can prevent leakage of refrigerant from flat, hollow members serve reliably with flat.In addition, the metallic plate that is used to form the flat, hollow members serve with flat can be identical with the metallic plate that is used to form other flat, hollow members serve, thereby reduce manufacturing cost.
According to paragraph 4) to 9) in any one laminated heat exchanger, according in uneven air velocity distribution, can accurately control and flow through each regional cold-producing medium flow velocity with respect to the air-flow direction upstream side.
Paragraph 10) laminated heat exchanger can reduce the cold-producing medium flow velocity that flows through the resistance part in the cold-producing medium shunting collector section reliably.
Paragraph 11) laminated heat exchanger can make cold-producing medium divide equably and flow to the refrigerant flow tube portion that links to each other with the part that is positioned at the resistive plate portion downstream of cold-producing medium shunting collector section.In the time of in resistive plate portion is arranged on cold-producing medium shunting collector section, cold-producing medium increases by the speed of the resistance hole of resistive plate portion.This causes cold-producing medium to be difficult to flow to being positioned near the refrigerant flow tube portion the resistive plate portion.Yet the setting of guide part makes easier the entering of cold-producing medium be positioned near the refrigerant flow tube portion of resistive plate portion.As a result, cold-producing medium can be shunted equably and enter the refrigerant flow tube portion that links to each other with the part that is positioned at the resistive plate portion downstream of cold-producing medium shunting collector section.
Description of drawings
Fig. 1 is the overall structure perspective view according to the evaporimeter of embodiment 1, and heat exchanger wherein of the present invention is as this evaporimeter;
Fig. 2 is the sectional view along Fig. 1 center line A-A;
Fig. 3 is the sectional view along Fig. 2 center line B-B;
Fig. 4 is the viewgraph of cross-section of one refrigerant flow tube portion in most flat, hollow members serve of using in the evaporimeter of Fig. 1;
Fig. 5 is the decomposition diagram of first flat, hollow members serve used in the evaporimeter of Fig. 1;
Fig. 6 is the decomposition diagram of second flat, hollow members serve used in the evaporimeter of Fig. 1;
Fig. 7 is the 3rd flat, hollow members serve of using in the evaporimeter of Fig. 1 and the decomposition diagram of managing fishplate bar (pipe jointplate);
Fig. 8 is the decomposition diagram of the 4th flat, hollow members serve used in the evaporimeter of Fig. 1;
Fig. 9 is the decomposition diagram of the 5th flat, hollow members serve used in the evaporimeter of Fig. 1;
Figure 10 illustrates the figure that cold-producing medium flows in Fig. 1 evaporimeter;
Figure 11 is the overall structure perspective view according to the evaporimeter of embodiment 2, and heat exchanger wherein of the present invention is as this evaporimeter;
Figure 12 is the decomposition diagram of first flat, hollow members serve used in the evaporimeter of Figure 11;
Figure 13 is the decomposition diagram of the 3rd flat, hollow members serve used in the evaporimeter of Figure 11;
Figure 14 is the decomposition diagram of the 4th flat, hollow members serve used in the evaporimeter of Figure 11;
Figure 15 illustrates the figure that cold-producing medium flows in the evaporimeter of Figure 11.
The specific embodiment
Embodiments of the invention are described below with reference to accompanying drawings.This embodiment is according to the laminated heat exchanger as the air conditioner for motor vehicle evaporimeter of the present invention.
In the following description, term " aluminium " comprises fine aluminium and aluminium alloy.
Embodiment 1
Fig. 1 to 10 illustrates this embodiment.
Fig. 1 to 3 illustrates the overall structure of the evaporimeter of embodiment 1; Fig. 4 to 9 illustrates the structure of the major part of this evaporimeter; Figure 10 illustrates cold-producing medium flowing in evaporimeter.
Referring to figs. 1 through 3, evaporimeter (1) is designed to like this: a plurality of flat, hollow members serve (2A), (2B), (2C), (2D) and (2E) arrange with overlapped way on left and right directions and combine, each flat, hollow members serve has the rectangular shape of vertical prolongation, and their width is gone up at fore-and-aft direction (air-flow direction) and extended simultaneously.Evaporimeter (1) comprising: along the refrigerant inlet header section (3) of left and right directions extension; The refrigerant outlet collector section (4) that is arranged on refrigerant inlet header section (3) back (with respect to the upstream of air-flow direction) and extends along left and right directions; First intermediate header (5) that is arranged on below the refrigerant inlet header section (3) and extends along left and right directions; Second intermediate header (6) that continues first intermediate header (5) and be positioned at its left side and extend along left and right directions; The 3rd intermediate header (7) that is arranged on above second intermediate header (6), continues refrigerant inlet header section (3) and be positioned at its left side and extend along left and right directions; The 4th intermediate header (8) that is arranged on the 3rd intermediate header (7) back, continuity refrigerant outlet collector section (4) and is positioned at its left side and extends along left and right directions; The 5th intermediate header (9) that is arranged on below the 4th intermediate header (8) and extends along left and right directions; And continue the 5th intermediate header (9) and be positioned at its right side and be arranged on the 6th intermediate header (11) (see figure 10) below the refrigerant outlet collector section (4).
Right-hand member in refrigerant inlet header section (3) is formed with a refrigerant inlet (12), and is formed with a refrigerant outlet (13) at the right-hand member of refrigerant outlet collector section (4).Aluminum joint plate (14) combines with the right part of refrigerant inlet and outlet header section (3) and (4).This fish plate (14) has cold-producing medium inflow entrance (14a) that is communicated with refrigerant inlet (12) and the cold-producing medium flow export (14b) that is communicated with refrigerant outlet (13).Refrigerant inlet pipe (not shown) links to each other with the cold-producing medium inflow entrance (14a) of fish plate (14), and refrigerant outlet pipe (not shown) links to each other with cold-producing medium flow export (14b) simultaneously.
Shown in Fig. 2 to 4, each among flat, hollow members serve (2A), (2B), (2C), (2D) and (2E) comprises two vertical extensions and together rectangular aluminum sheet (15A) of peripheral edge portion soldering, (15B), (15C) or (15D).Every block of aluminium sheet (15A), (15B), (15C) and (15D) all form by the aluminium soldering sheet material that has the brazing material layer in its opposite side each.The refrigerant flow tube portion (16) of the protrusion of two vertically extending front sides and rear side and (17) and the collector formation portion (18) of protruding and (19) be arranged on two blocks of aluminium sheets (15A), (15B), (15C) or (15D) between, described aluminium sheet (15A), (15B), (15C) or (15D) partly constitute flat, hollow members serve (2A), (2B), (2C), (2D) or (2E).The collector formation portion (18) of protruding links to each other with the bottom with the corresponding upper end in refrigerant flow tube portion (16) and (17) with (19).Except that flat, hollow members serve (2D) with in each flat, hollow members serve (2E), promptly, be provided with an aluminum corrugate inner fins (21) in flat, hollow members serve (2A), (2B) and (2C) each, this aluminum corrugate inner fins (21) is arranged to extend across refrigerant flow tube portion (16) and (17) of front side and rear side.This corrugate inner fin (21) soldering is at two blocks of aluminium sheets (15A), (15B) or (15C).Two aluminum corrugate inner fins can be arranged in corresponding refrigerant flow tube portion (16) and (17) dividually.
In flat, hollow members serve (2A), (2B), (2C), (2D) with (2E), collector formation portion (18) and (19) height on left and right directions are greater than the height of refrigerant flow tube portion (16) and (17).Contiguous flat, hollow members serve (2A), (2B), (2C), (2D) or collector formation portion (18) (2E) or (19) soldering are together.The collector formation portion (18) of flat, hollow members serve (2A), (2B), (2C), (2D) and upper and lower, front side (2E) forms refrigerant inlet header section (3) and first to the 3rd intermediate header (5) arrives (7).Similarly, the collector formation portion (19) of rear side upper and lower formation refrigerant outlet collector section (4) and the 4th to the 6th intermediate header (8) are to (11).The gap is passed through as air between contiguous flat, hollow members serve (2A), (2B), (2C), (2D) and the refrigerant flow tube portion (2E) (16) and the gap between the refrigerant flow tube portion (17).Be provided with the fin aluminum corrugated outside (22) at corresponding air in by the gap, these fin brazed are in flat, hollow members serve (2A) accordingly, (2B), (2C), (2D) with (2E).Refrigerant flow tube portion (16) and (17) and outer fin (22) constitute heat exchange core.
Fig. 5 illustrates the structure of first flat, hollow members serve (2A), this first flat, hollow members serve is one of flat, hollow members serve that is used to form refrigerant inlet header section (3), refrigerant outlet collector section (4), first intermediate header (5) and the 6th intermediate header (11), and be except be arranged on the flat, hollow members serve (2C) of left end and right-hand member, relative left and right directions be arranged on the centre position flat, hollow members serve (2D) and be separated by flat, hollow members serve the flat, hollow members serve (2E) that preset distance arranges of right-hand member.As shown in Figure 5, the hand aluminum plate (15A) that is used for partly constituting first flat, hollow members serve (2A) comprises that two pipe portions of vertically extending, protrude, be positioned at front side and rear side to the right form protuberance (23) and four collectors formation protuberances (24) that protrude to the right, this collector forms protuberance and links to each other with the corresponding top and bottom that pipe portion forms protuberance (23), and its protrusion height forms the protrusion height of protuberance (23) greater than pipe portion.Each collector form protuberance (24) thus roof all dashed to wear and formed through hole (25).The left-hand side aluminium sheet (15A) that is used for partly constituting first flat, hollow members serve (2A) is the mirror image of hand aluminum plate (15A), and identical part uses same reference marker to represent.Two blocks of aluminium sheets (15A) are assembled together like this: make opening that formation portion of pipe portion (23) and collector form protuberance (24) toward each other, inner fin (21) is clipped in the middle of them simultaneously, carries out soldering subsequently.Thereby form first flat, hollow members serve (2A).The collector formation portion (18) of two adjacent first flat, hollow members serve (2A) and (19) combine respectively in the mode that is communicated with: the collector of one first flat, hollow members serve (2A) forms end that the size of protuberance (24) reduces a little and is pressed into the collector that cooperates and be soldered to another first flat, hollow members serve (2A) and forms in the respective through hole (25) of protuberance (24).
Fig. 6 illustrates the structure of second flat, hollow members serve (2B), this second flat, hollow members serve is one of flat, hollow members serve that is used to form second intermediate header (6), the 3rd intermediate header (7), the 4th intermediate header (8) and the 5th intermediate header (9), and is except the flat, hollow members serve (2C) that is arranged on left end, left and right directions is arranged on the flat, hollow members serve the flat, hollow members serve (2D) of middle position relatively.As shown in Figure 6, be positioned at the communication passage formation protuberance (26) that is formed with outside protrusion between two upper header formation protuberances (24) on the hand aluminum plate (15B) of second flat, hollow members serve (2B), the height that this communication passage forms protuberance is slightly smaller than the height that collector forms protuberance (24).Like this, two collectors formation protuberances (24) communicate with each other by communication passage formation protuberance (26).The left-hand side aluminium sheet (15B) of second flat, hollow members serve (2B) is the mirror image of hand aluminum plate (15B), and identical part uses same reference marker to represent.The communication passage of two blocks of aluminium sheets (15B) forms protuberance (26) and forms a communication passage (27) of protruding.Other architectural feature of second flat, hollow members serve (2B) is identical with first flat, hollow members serve (2A) shown in Figure 5.The same in conjunction with situation with adjacent first flat, hollow members serve (2A), the collector formation portion (18) of two adjacent second flat, hollow members serve (2B) and (19) combine in the mode that is communicated with respectively.
Fig. 7 illustrates the structure of the 3rd flat, hollow members serve (2C) that is arranged on right-hand member.As shown in Figure 7, at the aluminium sheet (15C) of the right-hand side that is used for partly constituting the 3rd flat, hollow members serve (2C), the protrusion height that all collectors form protuberance (24A) equals the protrusion height that pipe portion forms protuberance (23).In addition, in hand aluminum plate (15C), do not form through hole in each in the roof of two lower header formation protuberances (24A).In addition, in hand aluminum plate (15C), on the roof of front side upper header formation protuberance (24A), form a through hole as refrigerant inlet (12), on the roof of rear side upper header formation protuberance (24A), form a through hole as refrigerant outlet (13) simultaneously.Center on refrigerant inlet and outlet (12) and (13) respectively and on the respective top of collector formation protuberance (24A), form outstanding flange part (28) and (29) to the right.Other architectural feature of the 3rd flat, hollow members serve (2C) is identical with first flat, hollow members serve (2A) shown in Figure 5.The same with adjacent first flat, hollow members serve (2A) in conjunction with situation, the collector formation portion (18A) of the 3rd flat, hollow members serve (2C) and (19A) be attached to collector formation portion (18) and (19) of adjacent first flat, hollow members serve (2A) of left-hand side respectively in the mode that is communicated with.When two flange parts (28) of the 3rd flat, hollow members serve (2C) and (29) are inserted the cold-producing medium inflow entrance (14a) of pipe fishplate bar (14) and cold-producing medium flow export (14b) respectively, manage fishplate bar (14) and be soldered on the 3rd flat, hollow members serve (2C).
Though omitted detailed explanation, except not forming through hole on the roof of all collectors formation protuberances (24A) and not managing fishplate bar (14) soldering thereon, the flat, hollow members serve (2C) that is arranged on left end is structurally identical with the 3rd flat, hollow members serve (2C).Left-end flat hollow component (2C) is arranged in the mode of mirror image with respect to the 3rd flat, hollow members serve (2C).
Fig. 8 illustrates the structure that relative left and right directions is arranged on the 4th flat, hollow members serve (2D) of middle position.As shown in Figure 8, at the two blocks of aluminium sheets (15D) that are used for partly constituting the 4th flat, hollow members serve (2D), to internal strain, on the roof of pipe portion formation protuberance (23), form a plurality of vertical extensions, inside outstanding rib (31) with the front and back spacing by roof.The projecting height of rib (31) equals the protrusion height that pipe portion forms protuberance (23).In the middle of two blocks of aluminium sheets (15D), accompany a vertical rectangular aluminum flat (32) that prolongs.The peripheral edge portion of flat (32) is soldered on two blocks of aluminium sheets (15D) after between the peripheral edge portion that is clipped in two blocks of aluminium sheets (15D).The outstanding end of the rib (31) of two blocks of aluminium sheets (15A) is soldered on the flat (32).Be formed with two through holes (33) in the bottom of flat (32), the position of this through hole is corresponding to two through holes (25) on every in two blocks of aluminium sheets (15A), and diameter equals the diameter of through hole (25).In the 4th flat, hollow members serve (2D), inner fin is not set.Other architectural feature of the 4th flat, hollow members serve (2D) is identical with first flat, hollow members serve (2A) shown in Figure 5.The same with adjacent first flat, hollow members serve (2A) in conjunction with situation, collector formation portion (18) and (19) of first flat, hollow members serve (2A) that the collector formation portion (18) of the 4th flat, hollow members serve (2D) and (19) are adjacent with right-hand side respectively combine with mode of communicating, and collector formation portion (18) and (19) of second adjacent with the left-hand side respectively flat, hollow members serve (2B) combine with mode of communicating.Flat (32) separates each other refrigerant inlet header section (3) and the 3rd intermediate header (7), simultaneously refrigerant outlet collector section (4) and the 4th intermediate header (8) is separated each other.Two through holes (33) make between first intermediate header (5) and second intermediate header (6) and are communicated with, and make simultaneously between the 5th intermediate header (9) and the 6th intermediate header (11) to be communicated with.
Fig. 9 illustrates and is arranged on and the be separated by structure of the 5th flat, hollow members serve (2E) of preset distance of right-hand member.As shown in Figure 9, similar to two blocks of aluminium sheets that are used for partly constituting the 4th flat, hollow members serve (2D) shown in Figure 8, two blocks of aluminium sheets (15D) are used for partly constituting the 5th flat, hollow members serve (2E).In the middle of two blocks of aluminium sheets (15D), accompany a vertical rectangular aluminum flat (34) that prolongs.The peripheral edge portion of flat (34) is soldered on two blocks of aluminium sheets (15D) after between the peripheral edge portion that is clipped in two blocks of aluminium sheets (15D).On the upper end of flat (34), form two through holes (35), the position of this through hole is positioned at the position formation through hole (35) corresponding to the preceding side through hole (25) of two blocks of aluminium sheets (15D) simultaneously corresponding to two through holes (25) that are formed on every upper end in two blocks of aluminium sheets (15D) on the bottom of flat (34).The diameter of through hole (35) equals the diameter of through hole (25).In the present embodiment, the position corresponding to the backside via (25) of two blocks of aluminium sheets (15D) on the bottom of flat (34) forms a rounded resistance hole (36), and the diameter of this resistance hole is less than the diameter of through hole (25).In the present embodiment, position in resistance hole (36) below forms the guide part (37) that is the part sphere on the right-hand surface of flat (34), this guide part is used for towards the top, has promptly passed through the cold-producing medium of resistance hole (36) towards near the guiding of the rear-side refrigerant flow tube portions (17) the flat (34).Other architectural feature of the 5th flat, hollow members serve (2E) is identical with the 4th flat, hollow members serve (2D) shown in Figure 8.The same with adjacent first flat, hollow members serve (2A) in conjunction with situation, collector formation portion (18) and (19) of the 5th flat, hollow members serve (2E), collector formation portion (18) and (19) of first adjacent with right-hand side with the left-hand side respectively flat, hollow members serve (2A) combine with mode of communicating.
Flat, hollow members serve (2A), (2B), (2C), (2D) and front-side refrigerant flow tube portions (2E) (16) are set up between refrigerant inlet header section (3) and first intermediate header (5) and are communicated with, and set up simultaneously to be communicated with between second intermediate header (6) and the 3rd intermediate header (7).Flat, hollow members serve (2A), (2B), (2C), (2D) and rear-side refrigerant flow tube portions (2E) (17) are set up between refrigerant outlet collector section (4) and the 6th intermediate header (11) and are communicated with, and set up simultaneously to be communicated with between the 4th intermediate header (8) and the 5th intermediate header (9).By being formed on the communication passage (27) on second flat, hollow members serve (2B), the 3rd intermediate header (7) communicates with each other with the 4th intermediate header (8).In refrigerant inlet header section (3), second intermediate header (6) and the 6th intermediate header (11) each is as cold-producing medium shunting collector section.Cold-producing medium shunting collector section has a coolant channel, and this coolant channel allows cold-producing medium vertically to flow along it, and it is with respect to the downstream end sealing of flow of refrigerant direction, and causes cold-producing medium to be flow to a plurality of refrigerant flow tube portion (16) and (17) by branch.In refrigerant outlet collector section (4), first intermediate header (5) and the 5th intermediate header (9) each is as the cold-producing medium collector section of confluxing.The cold-producing medium collector section of confluxing has a coolant channel, this coolant channel allows cold-producing medium open along its vertically mobile also its downstream end with respect to the flow of refrigerant direction, causes cold-producing medium to flow out from a plurality of refrigerant flow tube portion (16) and (17) and converges to together.The coolant channel of refrigerant inlet header section (3) is communicated with refrigerant inlet (12); The coolant channel of refrigerant outlet collector section (4) is communicated with refrigerant outlet (13); The coolant channel of first intermediate header (5) is communicated with the coolant channel of second intermediate header (6); The coolant channel of the 5th intermediate header (9) is communicated with the coolant channel of the 6th intermediate header (11).The rear section of the bottom of the flat (34) of the 5th flat, hollow members serve (2E), that is, the part of the flat (34) in the 6th intermediate header (11) is the resistive plate portion (38) of blocking the coolant channel of the 6th intermediate header (11).Resistive plate portion (38) goes up the resistance hole (36) that forms and provides resistance to the cold-producing medium of the coolant channel that flows through the 6th intermediate header (11).Preferably, the size of resistance hole (36) be the coolant channel of the 6th intermediate header (11) cross-sectional area (shown in Figure 10 dash area) 1/60 to 1/10.Method obtains by experiment, the preferred size of resistance hole (36) be the 6th intermediate header (11) coolant channel cross-sectional area 1/60 to 1/10.When the size of resistance hole (36) less than the cross-sectional area of the coolant channel of the 6th intermediate header (11) 1/60 the time, the refrigerant amount that flows through resistive plate portion (38) exceedingly reduces.When resistance hole (36) size greater than cross-sectional area 1/10 the time, the calibration result of discharging the uneven temperature distribution of air may become not enough, and the uneven temperature distribution of this discharge air is what to cause owing to the air velocity distribution that is positioned at upstream side with respect to air-flow direction is inhomogeneous.
In the manufacturing of evaporimeter (1), its part is assembled up and together temporary fixed, then together the part soldering that assembles.
Evaporimeter (1) is contained in the shell, and this shell is arranged in the compartment of vehicle, for example automobile, and this evaporimeter and compressor and condenser constitute a kind of refrigeration cycle, and as air conditioner for motor vehicle.
In above-mentioned evaporimeter (1), as shown in figure 10, the two phase refrigerant of vapour-liquid phase enters refrigerant inlet header section (3) from inlet tube by the cold-producing medium inflow entrance (14a) and the refrigerant inlet (12) of managing fishplate bar (14) by behind compressor, condenser and the expansion valve (decompressor).When the cold-producing medium that enters refrigerant inlet header section (3) flowed through coolant channel left, cold-producing medium was flow to the front-side refrigerant flow tube portions (16) that links to each other with refrigerant inlet header section (3) by branch; Flow downward by refrigerant flow tube portion (16); Enter first intermediate header (5); Coolant channel by first intermediate header (5) converges mobile left; Then through entering second intermediate header (6) by hole (33).When the cold-producing medium that enters second intermediate header (6) flowed through coolant channel left, cold-producing medium was flow to the front-side refrigerant flow tube portions (16) that links to each other with second intermediate header (6) by branch; Upwards flow through refrigerant flow tube portion (16); Enter the 3rd intermediate header (7) then.The cold-producing medium that has entered the 3rd intermediate header (7) enters the 4th intermediate header (8) by the communication passage (27) of second flat, hollow members serve (2B).When the cold-producing medium that enters the 4th intermediate header (8) flowed through coolant channel to the right, cold-producing medium was flow to the rear-side refrigerant flow tube portions (17) that links to each other with the 4th intermediate header (8) by branch; Flow downward by refrigerant flow tube portion (17); Enter the 5th intermediate header (9) and converge to together.The cold-producing medium that has entered the 5th intermediate header (9) flows through coolant channel to the right; By entering the 6th intermediate header (11) by hole (33).When the cold-producing medium that enters the 6th intermediate header (11) flowed through coolant channel to the right, cold-producing medium was flow to the rear-side refrigerant flow tube portions (17) that links to each other with the 6th intermediate header (11) by branch; Upwards flow through refrigerant flow tube portion (17); Enter refrigerant outlet collector section (4) then.The cold-producing medium that has entered refrigerant outlet collector section (4) enters outlet by the cold-producing medium flow export (14b) of refrigerant outlet (13) and pipe fishplate bar (14), and flows out from outlet.When flowing through flat, hollow members serve (2A), (2B), (2C), (2D) and refrigerant flow tube portion (2E) (16) and (17), cold-producing medium and air carry out heat exchange, described air flows through air by the gap along the direction of arrow X as shown in figs. 1 and 10, and cold-producing medium flows out evaporimeter (1) with vapour phase subsequently.
Because the cross-sectional area of the coolant channel of the 6th intermediate header (11) reduces because of the resistance hole (36) of resistive plate portion (38), the refrigerant amount that flows through the part that is positioned at resistive plate portion (38) downstream of coolant channel becomes less relatively, thereby the refrigerant amount that flows through the refrigerant flow tube portion (17) that links to each other with this part of this coolant channel becomes relative less.Therefore, even the air velocity distribution that is positioned at upstream side with respect to air-flow direction becomes inhomogeneous and thereby the air velocity that is positioned at resistive plate portion (38) right side area descend, also can prevent extreme decline by this regional air themperature, thereby, can make the uniformity of temperature profile of discharging air.In addition, in the low zone of air velocity, prevent that condensed water from freezing on surfaces of refrigerant flow tube portions and fin surface.
In resistive plate portion (38) was arranged on the 6th intermediate header (11), the refrigerant velocities of having passed through the resistance hole (36) of resistive plate portion (38) increased.This causes cold-producing medium to be difficult to flow to being positioned near the refrigerant flow tube portion (17) the resistive plate portion (38).Yet the setting of guide part (37) makes easier the entering of cold-producing medium be positioned near the refrigerant flow tube portion (17) of resistive plate portion (38).As a result, cold-producing medium can be shunted equably and be entered the refrigerant flow tube portion (17) that links to each other with the part that is positioned at resistive plate portion (38) downstream of the 6th intermediate header (11).
In the above embodiments 1, resistive plate portion (38) is arranged in the 6th intermediate header (11), and resistance hole (36) is formed in the resistive plate portion (38).Yet the present invention is not limited thereto.In any one cold-producing medium shunting collector section at least, promptly, in in refrigerant inlet header section (3), second intermediate header (6) and the 6th intermediate header (11) at least one, a plurality of resistive plate portion can be set, be formed with resistance hole in each in resistive plate portion simultaneously.Alternatively, in in a plurality of cold-producing medium shunting collector sections each, promptly, in at least two in refrigerant inlet header section (3), second intermediate header (6) and the 6th intermediate header (11) each, at least one resistive plate portion can be set, be formed with resistance hole in each in resistive plate portion simultaneously.In these cases, but the resistance hole of mixed-arrangement different size.In corresponding coolant channel, also can be with the resistance hole mixed-arrangement of different vertical position.
Embodiment 2
Figure 11 to 15 illustrates this embodiment.
Figure 11 illustrates the overall structure of the evaporimeter of embodiment 2; Figure 12 to 14 illustrates the structure of the major part of this evaporimeter; Figure 15 illustrates cold-producing medium flowing in evaporimeter.
With reference to Figure 11, evaporimeter (40) is designed to like this: a plurality of flat, hollow members serve (41A), (41B), (41C) and (41D) arrange with overlapped way on left and right directions and combine, each of described flat, hollow members serve has the rectangular shape of vertical prolongation, and their width is gone up at fore-and-aft direction (air-flow direction) and extended simultaneously.Evaporimeter (40) comprising: along the refrigerant inlet header section (42) of left and right directions extension; Continuity refrigerant inlet header section (42) and the refrigerant outlet collector section (43) that is positioned at its right side and extends along left and right directions; First intermediate header (44) that is arranged on refrigerant inlet header section (42) front (with respect to the downstream of air-flow direction) and extends along left and right directions; And continue first intermediate header (44) and be positioned at its right side, be positioned at second intermediate header (45) (seeing Figure 15) of refrigerant outlet collector section (43) front simultaneously.
Left end in refrigerant inlet header section (42) is formed with a refrigerant inlet (46), and is formed with a refrigerant outlet (47) at the right-hand member of refrigerant outlet collector section (43).Though explanation by using suitable device, does not make refrigerant inlet pipe (not shown) link to each other with refrigerant inlet (46), refrigerant outlet pipe (not shown) links to each other with refrigerant outlet (47).
Shown in Figure 11 to 14, each among flat, hollow members serve (41A), (41B), (41C) and (41D) comprises two vertical extensions and together rectangular aluminum sheet (48A) of peripheral edge portion soldering, (48B) or (48C).Aluminium sheet (48A), (48B) and (48C) in every form by the aluminium soldering sheet material that all has the brazing material layer in its opposite side each.partly constitute flat, hollow members serve (41A), (41B), (41C) or two blocks of aluminium sheets (48A) (41D), (48B) or (48C) between collector formation portion (53) and (54) of a hairpin refrigerant flow tube portion (50) and two protrusions are set.Hairpin refrigerant flow tube portion (50) comprises the linear portion (51) and a protrusion interconnecting part (52) of two vertically extending protrusions, and this protrusion interconnecting part is used for setting up between the upper end of the linear portion (51) of these two protrusions and is communicated with.The collector formation portion (53) of two protrusions links to each other with (54) corresponding bottom with the linear portion (51) of two protrusions of refrigerant flow tube portion (50).Except that flat, hollow members serve (41C) with in each flat, hollow members serve (41D), promptly, in in flat, hollow members serve (41A) and (41B) each, be provided with an aluminum corrugate inner fins (55), this aluminum corrugate inner fins (55) is arranged to extend across the linear portion (51) of two protrusions of refrigerant flow tube portion (50).This corrugate inner fin (55) soldering is on two blocks of aluminium sheets (48A).Two aluminum corrugate inner fins can be arranged on the linear portion (51) of corresponding protrusion of refrigerant flow tube portion (50) dividually.
In flat, hollow members serve (41A), (41B), (41C) with (41D), collector formation portion (53) and (54) height on left and right directions are greater than the height of refrigerant flow tube portion (50).Contiguous flat, hollow members serve (41A), (41B), (41C) or collector formation portion (53) (41D) or (54) soldering are together.Flat, hollow members serve (41A), (41B), (41C) and rear side collector formation portion (53) (41D) form refrigerant inlet header section (42) and refrigerant outlet collector section (43).Similarly, front-side header formation portion (54) forms first and second intermediate header (44) and (45).The gap is passed through as air in gap between contiguous flat, hollow members serve (41A), (41B), (41C) and the refrigerant flow tube portion (41D) (50).The fin aluminum corrugated outside (56) is set at corresponding air in by the gap, these fin brazed are in flat, hollow members serve (41A) accordingly, (41B), (41C) with (41D).Refrigerant flow tube portion (50) and outer fin (56) constitute heat exchange core.
Figure 12 illustrates the structure of first flat, hollow members serve (41A), and first flat, hollow members serve (41A) is to be arranged on the flat, hollow members serve (41C) of middle position and to be positioned at one of flat, hollow members serve of being separated by with right-hand member the flat, hollow members serve (41D) of preset distance except being arranged on the flat, hollow members serve (41B) of left end and right-hand member, relative left and right directions.As shown in figure 12, the aluminium sheet (48A) that is used for partly constituting the right-hand side of first flat, hollow members serve (41A) comprising: two vertical extends, linear portion that protrude, that be positioned at front side and rear side forms protuberance (57) to the right; One interconnecting part forms protuberance (58), and this interconnecting part forms protuberance and protrudes to the right, be applicable to set up between the upper end of linear portion formation protuberance (57) to be communicated with, and protrusion height equals the protrusion height that linear portion forms protuberance (57); And two collectors formation protuberances (59), this collector forms protuberance and is connected with the corresponding lower end that linear portion forms protuberance (57), and protrusion height forms the protrusion height of protuberance (57) and interconnecting part formation protuberance (58) greater than linear portion.By making roof, on the roof of interconnecting part formation protuberance (58), form a plurality of inwardly outstanding arciform ribs (61) with constant spacing to internal strain.Rib (61) has the protrusion height that equates with linear portion formation protuberance (57).Collector form protuberance (59) thus in each roof all dashed to wear and formed through hole (60).The left-hand side aluminium sheet (48A) that is used for partly constituting first flat, hollow members serve (41A) is the mirror image of hand aluminum plate (48A), and identical part uses same reference marker to represent.Two blocks of aluminium sheets (48A) are assembled together like this, make linear portion form protuberance (57), interconnecting part and form opening that protuberance (58) and collector form protuberance (59) toward each other, and inner fin (55) is clipped between them also soldering subsequently together simultaneously.Thereby form first flat, hollow members serve (41A).Collector formation portion (53) and (54) of two adjacent first flat, hollow members serve (41A) combine with mode of communicating respectively: the collector of one first flat, hollow members serve (41A) forms end that the size of protuberance (59) reduces a little and is pressed into the collector that cooperates and be soldered to another first flat, hollow members serve (41A) and forms in the respective through hole (60) of protuberance (59).
As shown in figure 11, in the hand aluminum plate (48B) that is used for partly constituting second flat, hollow members serve (41B) that is positioned at right-hand member, the protrusion height of two collector formation protuberances (59A) equals the protrusion height that linear portion forms protuberance (57).In addition, in hand aluminum plate (48B), on two lower header form in the roof of protuberances (59A) each, do not form through hole, but in the collector of bottom rear side forms the roof of protuberance (59A), form refrigerant outlet (47).Other architectural feature of second flat, hollow members serve (41B) is identical with first flat, hollow members serve (41A) shown in Figure 12.The same in conjunction with situation with adjacent first flat, hollow members serve (41A), collector formation portion (53) and (54) of first flat, hollow members serve (41A) that the collector formation portion (53) of second flat, hollow members serve (41B) and (54) are adjacent with left-hand side respectively combine with mode of communicating.
Though not explanation, the flat, hollow members serve (41B) that is positioned at left end is arranged to be positioned at the mirror image of second flat, hollow members serve (41B) of right-hand member, and structurally identical with second flat, hollow members serve (41B), the rear side collector that is formed on aluminium sheet (48B) except the refrigerant inlet (46) that replaces refrigerant outlet (47) forms on the protuberance (59A).
Figure 13 illustrates the structure that relative left and right directions is arranged on the 3rd flat, hollow members serve (41C) of middle position.As shown in figure 13, at the two blocks of aluminium sheets (48C) that are used for partly constituting the 3rd flat, hollow members serve (41C), by making roof, on the roof of linear portion formation protuberance (57), form a plurality of vertical extensions, inside outstanding rib (62) with the front and back spacing to internal strain.The projecting height of rib (62) equals the protrusion height that linear portion forms protuberance (57).In the middle of two blocks of aluminium sheets (48C), accompany a vertical rectangular aluminum flat (63) that prolongs.The peripheral edge portion of flat (63) is soldered on two blocks of aluminium sheets (48C) after between the peripheral edge portion that is clipped in two blocks of aluminium sheets (48C).The outstanding end of the rib (62) of two blocks of aluminium sheets (48C) is soldered on the flat (63).Position corresponding to the preceding side through hole (60) in two aluminium sheets (48C) each on the bottom of flat (63) forms the through hole (64) that a diameter equals the diameter of through hole (60).In the 3rd flat, hollow members serve (41C), inner fin is not set.Other architectural feature of the 3rd flat, hollow members serve (41C) is identical with first flat, hollow members serve (41A) shown in Figure 12.The same in conjunction with situation with adjacent first flat, hollow members serve (41A), collector formation portion (53) and (54) of first flat, hollow members serve (41A) that the collector formation portion (53) of the 3rd flat, hollow members serve (41C) and (54) are adjacent with right-hand side with left-hand side respectively combine with mode of communicating.Flat (63) separates each other refrigerant inlet header section (42) and refrigerant outlet collector section (43).Through hole (64) is set up between first intermediate header (44) and second intermediate header (45) and is communicated with.
Figure 14 illustrates and the be separated by structure of the 4th flat, hollow members serve (41D) that preset distance is provided with of right-hand member.As shown in figure 14, similar to two blocks of aluminium sheets that are used for partly constituting the 3rd flat, hollow members serve (41C) shown in Figure 13, two blocks of aluminium sheets (48C) are used for partly constituting the 4th flat, hollow members serve (41D).Between two blocks of aluminium sheets (48C), accompany a vertical rectangular aluminum flat (65) that prolongs.The peripheral edge portion of flat (65) is soldered on two blocks of aluminium sheets (48C) after between the peripheral edge portion that is clipped in two blocks of aluminium sheets (48C).Position corresponding to the backside via (60) of two blocks of aluminium sheets (48C) on the bottom of flat (65) forms a through hole (66).The diameter of through hole (66) equals the diameter of through hole (60).In the present embodiment, the position corresponding to the preceding side through hole (60) of two blocks of aluminium sheets (48C) on the bottom of flat (65) forms a rounded resistance hole (67), and the diameter of this resistance hole is less than the diameter of through hole (60).In the present embodiment, on the right-hand surface of flat (65), form a guide part (68) that is the part sphere at resistance hole (67) lower position, this guide part is used for towards the top, i.e. near the linear portion (51) of the protrusion of the front side of the refrigerant flow tube portion (50) the flat (65) guiding is the cold-producing medium by resistance hole (67).Other architectural feature of the 4th flat, hollow members serve (41D) is identical with the 3rd flat, hollow members serve (41C) shown in Figure 13.The same in conjunction with situation with adjacent first flat, hollow members serve (41A), collector formation portion (53) and (54) of first flat, hollow members serve (41A) that the collector formation portion (53) of the 4th flat, hollow members serve (41D) and (54) are adjacent with right-hand side with left-hand side respectively engage in the mode that is communicated with.
Flat, hollow members serve (41A), (41B), (41C) and refrigerant flow tube portion (41D) (50) are set up between refrigerant inlet header section (42) and first intermediate header (44) and are communicated with, and set up simultaneously to be communicated with between second intermediate header (45) and refrigerant outlet collector section (43).In refrigerant inlet header section (42) and second intermediate header (45) each is as cold-producing medium shunting collector section.This cold-producing medium shunting collector section has the permission cold-producing medium and vertically flows and its coolant channel with respect to the downstream end sealing of flow of refrigerant direction along it, and causes cold-producing medium to be flow to a plurality of refrigerant flow tube portion (50) by branch.In first intermediate header (44) and the refrigerant outlet collector section (43) each is as the cold-producing medium collector section of confluxing.This cold-producing medium collector section of confluxing has and allows cold-producing medium along coolant channel that it vertically flows and it is open with respect to the downstream end of flow of refrigerant direction, causes cold-producing medium to flow out from a plurality of refrigerant flow tube portion (50) and converges to together.The coolant channel of refrigerant inlet header section (42) is communicated with refrigerant inlet (46); The coolant channel of refrigerant outlet collector section (43) is communicated with refrigerant outlet (47); The coolant channel of first intermediate header (44) is communicated with the coolant channel via through holes (64) of second intermediate header (45).The front part of the bottom of the flat (65) of the 4th flat, hollow members serve (41D), that is, the part that is positioned at second intermediate header (45) of flat (65) is the resistive plate portion (69) of blocking the coolant channel of second intermediate header (45).Be formed on the cross-sectional area that resistance hole (67) on the resistive plate portion (69) has reduced the coolant channel of second intermediate header (45).Preferably, the size of resistance hole (67) be the coolant channel of second intermediate header (45) cross-sectional area (shown in Figure 15 dash area) 1/60 to 1/10.Its reason and embodiment's 1 is similar.
In the manufacturing of evaporimeter (40), its part is assembled up and together temporary fixed, then together the part soldering that assembles.
Evaporimeter (40) is contained in the shell, and this shell is arranged in the compartment of vehicle, for example automobile, and this evaporimeter and compressor and condenser constitute a kind of refrigeration cycle, and as air conditioner for motor vehicle.
In above-mentioned evaporimeter (40), as shown in figure 15, the vapour-liquid two phase refrigerant mutually by compressor, condenser and expansion valve (decompressor) enters refrigerant inlet header section (42) from inlet tube by refrigerant inlet (46).When the cold-producing medium that enters refrigerant inlet header section (42) flowed through coolant channel to the right, cold-producing medium was flow to the refrigerant flow tube portion (50) that links to each other with refrigerant inlet header section (42) by branch; Flow through refrigerant flow tube portion (50); Enter first intermediate header (44); Coolant channel by first intermediate header (44) converges mobile to the right; Pass through through hole (64) then and enter second intermediate header (45).When the cold-producing medium that enters second intermediate header (45) flowed through coolant channel to the right, cold-producing medium was flow to the refrigerant flow tube portion (50) that links to each other with second intermediate header (45) by branch; Flow through refrigerant flow tube portion (50); Enter refrigerant outlet collector section (43) then.The cold-producing medium that has entered refrigerant outlet collector section (43) enters outlet by refrigerant outlet (47), and flows out from outlet.When flowing through flat, hollow members serve (41A), (41B), (41C) and refrigerant flow tube portion (41D) (50), cold-producing medium and air carry out heat exchange, described air direction along arrow X shown in Figure 11 and 15 flows through air by the gap, and cold-producing medium flows out evaporimeter (40) with vapour phase subsequently.
Because the cross-sectional area of the coolant channel of second intermediate header (45) is owing to the resistance hole (67) of resistive plate portion (69) reduces, the refrigerant amount that flows through the part that is positioned at resistive plate portion (69) downstream of coolant channel becomes less relatively, thereby the refrigerant amount that flows through the refrigerant flow tube portion (50) that links to each other with this part of this coolant channel becomes relative less.Therefore, even it is inhomogeneous to be positioned at the air velocity distribution of upstream side with respect to air-flow direction, and thereby the air velocity that is positioned at resistive plate portion (69) right side area descend, also can prevent extreme decline by this regional air themperature.In addition, in the low zone of air velocity, can prevent that condensed water from freezing on surfaces of refrigerant flow tube portions and fin surface.
In the time of in resistive plate portion (69) is arranged on second intermediate header (45), the refrigerant velocities of having passed through the resistance hole (67) of resistive plate portion (69) increases.This causes cold-producing medium to be difficult to flow to being positioned near the refrigerant flow tube portion (50) the resistive plate portion (69).Yet the setting of guide part (68) makes easier the entering of cold-producing medium be positioned near the refrigerant flow tube portion (50) of resistive plate portion (69).As a result, cold-producing medium can be shunted equably and enter refrigerant flow tube portion (50), and this refrigerant flow tube portion (50) links to each other with the part that is positioned at resistive plate portion (69) downstream of second intermediate header (45).
In the above embodiments 2, resistive plate portion (69) is set in second intermediate header (45), go up in resistive plate portion (69) and form resistance hole (67).Yet the present invention is not limited thereto.In any one cold-producing medium shunting collector section at least, that is, at least one in refrigerant inlet header section (42) and second intermediate header (45), a plurality of resistive plate portion can be set, the while forms resistance hole in each resistive plate portion.Alternatively, in each that can be in a plurality of cold-producing mediums shunting collector sections, that is, in each in refrigerant inlet header section (42) and second intermediate header (45), at least one resistive plate portion is set, the while forms resistance hole in each resistive plate portion.In these situations, but the resistance hole of mixed-arrangement different size.In addition, in corresponding coolant channel, also can be with the resistance hole mixed-arrangement of different vertical position.
Industrial applicibility
Laminated heat exchanger of the present invention is preferably used as for example evaporimeter of air conditioner for motor vehicle, this car The refrigeration circulation that is loaded on the vehicle with aircondition.

Claims (17)

1. laminated heat exchanger comprises: a plurality of flat, hollow members serve, each flat, hollow members serve comprise two vertical prolongations and metallic plate that peripheral edge portion combines; Be formed on the refrigerant flow tube portion of the protrusion between described two metallic plates; Collector formation portion with each protrusion that is connected in the opposite end of refrigerant flow tube portion, the collector formation portion of the adjacent flat, hollow members serve of arranging with overlapped way combines, the gap is passed through as air in gap between the refrigerant flow tube portion of adjacent flat, hollow members serve, the collector formation portion of flat, hollow members serve forms has the refrigerant inlet header section of refrigerant inlet, refrigerant outlet collector section and a plurality of intermediate header with refrigerant outlet, in all collector sections at least one is as cold-producing medium shunting collector section, this cold-producing medium shunting collector section has and allows cold-producing medium vertically to flow and with respect to the coolant channel of the downstream end sealing of flow of refrigerant direction along it, and cause cold-producing medium to be flow to a plurality of refrigerant flow tube portion by branch, cold-producing medium flows to the refrigerant inlet header section from refrigerant inlet, flow through refrigerant flow tube portion and intermediate header, flowing to refrigerant outlet collector Duan Bingcong refrigerant outlet flows out, wherein at least one in cold-producing medium shunting collector section the resistance part is set, so that provide resistance to the cold-producing medium that flows through along the coolant channel of the longitudinal extension of cold-producing medium shunting collector section.
2. laminated heat exchanger according to claim 1, it is characterized in that, described resistance part comprises the resistance hole that is formed on the resistive plate portion, and this resistive plate portion is arranged in this cold-producing medium shunting collector section in the coolant channel mode of blocking cold-producing medium shunting collector section.
3. laminated heat exchanger according to claim 2, it is characterized in that, described resistive plate portion is the part of a metal flat flat board, this metallic flat plate holder is in the centre and the combination with it of two metallic plates that are used to form flat, hollow members serve, and this part of this flat is positioned at cold-producing medium shunting collector section; The part of another collector section that has coolant channel being arranged in of this flat is formed with cold-producing medium by the hole, and this cold-producing medium has the cross-sectional area that equates with coolant channel by the hole.
4. according to claim 2 or 3 described laminated heat exchangers, it is characterized in that, at least one cold-producing medium shunting collector section, a plurality of resistive plate portion are set, and in each resistive plate portion, are formed with resistance hole.
5. laminated heat exchanger according to claim 4 is characterized in that, the resistance hole mixed-arrangement of different size.
6. laminated heat exchanger according to claim 4 is characterized in that, the resistance hole mixed-arrangement of different vertical position in corresponding coolant channel.
7. laminated heat exchanger according to claim 2 is characterized in that, in each in a plurality of cold-producing medium shunting collector sections at least one resistive plate portion is set, and is formed with resistance hole in this resistive plate portion.
8. laminated heat exchanger according to claim 7 is characterized in that, the resistance hole mixed-arrangement of different size.
9. laminated heat exchanger according to claim 7 is characterized in that, the resistance hole mixed-arrangement of different vertical position in corresponding coolant channel.
10. laminated heat exchanger according to claim 2 is characterized in that, the size of resistance hole be cold-producing medium shunting collector section coolant channel cross-sectional area 1/60 to 1/10.
11. laminated heat exchanger according to claim 2, it is characterized in that, the downstream side surface with respect to the flow of refrigerant direction of resistive plate portion is provided with guide part, so as guiding the refrigerant flow direction by resistance hole be positioned near the resistive plate portion refrigerant flow tube portion.
12. laminated heat exchanger according to claim 1, it is characterized in that, described flat, hollow members serve comprises two vertical extensions and the refrigerant flow tube portion that is provided with at each interval along air-flow direction, and be arranged on two collector formation portions on the upper end of flat, hollow members serve and in the bottom each, wherein two collector formation portions link to each other with the corresponding upper end of described two refrigerant flow tube portion and are spaced apart from each other along air-flow direction, and two collector formation portions link to each other with the corresponding lower end of described two refrigerant flow tube portion and are spaced apart from each other along air-flow direction in addition.
13. laminated heat exchanger according to claim 12, it is characterized in that, comprise the refrigerant inlet header section, be arranged in the refrigerant outlet collector section of refrigerant inlet header section upstream with respect to air-flow direction, be arranged in first intermediate header below the refrigerant inlet header section, with first intermediate header, second intermediate header that arranged in series arranges that is in line, be arranged in above second intermediate header and be in line the 3rd intermediate header of arranged in series of refrigerant inlet header section, with respect to air-flow direction be arranged in the 3rd intermediate header the upstream and be in line the 4th intermediate header of arranged in series of refrigerant outlet collector section, be arranged in the 5th intermediate header below the 4th intermediate header, and be arranged in below the refrigerant outlet collector section and with the 5th intermediate header be in line the 6th intermediate header of arranged in series, wherein refrigerant inlet header section, first intermediate header, in second intermediate header and the 3rd intermediate header each all comprises with respect to the air-flow direction collector formation portion of the flat, hollow members serve that is provided with of side towards downstream; In refrigerant outlet collector section, the 4th intermediate header, the 5th intermediate header and the 6th intermediate header each all comprises with respect to the collector formation portion of air-flow direction towards the flat, hollow members serve of upstream side setting; The refrigerant flow tube portion of flat, hollow members serve is set up between refrigerant inlet header section and first intermediate header, between second intermediate header and the 3rd intermediate header, between the 4th intermediate header and the 5th intermediate header, between the 6th intermediate header and the refrigerant outlet collector section and is communicated with; The 3rd intermediate header and the 4th intermediate header communicate with each other by the communication passage that is formed in the flat, hollow members serve; In refrigerant inlet header section, second intermediate header and the 6th intermediate header each is as cold-producing medium shunting collector section, this cold-producing medium shunting collector section has and allows cold-producing medium vertically to flow and with respect to the coolant channel of the downstream end sealing of flow of refrigerant direction along it, and causes cold-producing medium to be flow to a plurality of refrigerant flow tube portion by branch; In refrigerant outlet collector section, first intermediate header and the 5th intermediate header each is as the cold-producing medium collector section of confluxing, this cold-producing medium collector section of confluxing has and allows cold-producing medium vertically to flow and the coolant channel open with respect to the downstream end of flow of refrigerant direction along it, and causes cold-producing medium to flow out from a plurality of refrigerant flow tube portion convergeing to together; The coolant channel of refrigerant inlet header section is communicated with refrigerant inlet; The coolant channel of refrigerant outlet collector section is communicated with refrigerant outlet; The coolant channel of first intermediate header is communicated with the coolant channel of second intermediate header; The coolant channel of the 5th intermediate header is communicated with the coolant channel of the 6th intermediate header.
14. laminated heat exchanger according to claim 1, it is characterized in that, described flat, hollow members serve comprises: hairpin refrigerant flow tube portion, this refrigerant flow tube portion comprise the linear portion of two vertically extending protrusions that are spaced apart from each other along air-flow direction and are used for setting up the protrusion interconnecting part that is communicated with between the upper end of the linear portion of these two protrusions; And two collector formation portions that are arranged on the flat, hollow members serve bottom, these two collector formation portions link to each other with the corresponding opposite end of this refrigerant flow tube portion and are spaced apart from each other along air-flow direction.
15. laminated heat exchanger according to claim 14, it is characterized in that, comprise the refrigerant inlet header section, with the refrigerant inlet header section refrigerant outlet collector section that arranged in series arranges that is in line, be arranged in first intermediate header in refrigerant inlet header section downstream with respect to air-flow direction, and with respect to air-flow direction be arranged in refrigerant outlet collector section downstream and be in line second intermediate header of arranged in series of first intermediate header, wherein each in refrigerant inlet header section and the refrigerant outlet collector section all comprises the collector formation portion of the flat, hollow members serve that is provided with towards upstream side with respect to air-flow direction; In first intermediate header and second intermediate header each all comprises with respect to the air-flow direction collector formation portion of the flat, hollow members serve that is provided with of side towards downstream; The refrigerant flow tube portion of flat, hollow members serve and is set up between second intermediate header and refrigerant outlet collector section and is communicated with between the refrigerant inlet header section and first intermediate header; In the refrigerant inlet header section and second intermediate header each is as cold-producing medium shunting collector section, this cold-producing medium shunting collector section has and allows cold-producing medium vertically to flow and with respect to the coolant channel of the downstream end sealing of flow of refrigerant direction along it, and causes cold-producing medium to be flow to a plurality of refrigerant flow tube portion by branch; In the refrigerant outlet collector section and first intermediate header each is as the cold-producing medium collector section of confluxing, this cold-producing medium collector section of confluxing has and allows cold-producing medium vertically to flow and the coolant channel open with respect to the downstream end of flow of refrigerant direction along it, and causes cold-producing medium to flow out from a plurality of refrigerant flow tube portion convergeing to together; The coolant channel of refrigerant inlet header section is communicated with refrigerant inlet; The coolant channel of refrigerant outlet collector section is communicated with refrigerant outlet; The coolant channel of first intermediate header is communicated with the coolant channel of second intermediate header.
16. a kind of refrigeration cycle comprises compressor, condenser and evaporimeter, wherein this evaporimeter comprises according to any one the described laminated heat exchanger in the claim 1 to 15.
17. a vehicle wherein is equipped with kind of refrigeration cycle according to claim 16 as air conditioner for motor vehicle.
CNA200580038240XA 2004-09-10 2005-09-09 Laminated heat exchanger Pending CN101061365A (en)

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JP2004263495 2004-09-10
US60/609,831 2004-09-15

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