CN106574824B - The heat exchanger for automotive air conditioning systems of such as internal exchanger and the system including the heat exchanger - Google Patents
The heat exchanger for automotive air conditioning systems of such as internal exchanger and the system including the heat exchanger Download PDFInfo
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- CN106574824B CN106574824B CN201480081367.9A CN201480081367A CN106574824B CN 106574824 B CN106574824 B CN 106574824B CN 201480081367 A CN201480081367 A CN 201480081367A CN 106574824 B CN106574824 B CN 106574824B
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- Prior art keywords
- pipeline
- heat exchanger
- exterior tube
- pressure fluid
- low
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Classifications
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/28—Safety or protection arrangements; Arrangements for preventing malfunction for preventing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/30—Safety or protection arrangements; Arrangements for preventing malfunction for preventing vibrations
Abstract
The present invention relates to a kind of heat exchangers such as the inner heat exchanger of automotive air conditioning systems, the heat exchanger has conveying low-pressure fluid and accommodates the exterior tube of the pipeline of at least one conveying high-pressure fluid, and this air-conditioning system includes the inner heat exchanger.Heat exchanger (the Ei1) it include: exterior tube (10), which has longitudinal asymmetric axis (X), along the length of the shaft centerline measurement, and the exterior tube is suitable for conveying low-pressure fluid (BP)；And at least one pipeline (20A), at least one pipeline is radially mounted to inside exterior tube and with multiple longitudinal channel for being suitable for conveying high-pressure fluid (HP), and exchanger includes the sound arrester that can weaken the noise by low-pressure fluid transmission.According to the present invention, described device is at least partly made of at least one described pipeline, at least one described pipeline surrounds and is torsion and/or coiling 50% or more of the length along the axis.
Description
Technical field
The present invention relates to a kind of heat exchanger, which has conveying low-pressure fluid and accommodates at least one conveying
The exterior tube of the pipeline of high-pressure fluid, advantageously, the exchanger are the inner heat exchanger for motor vehicle air conditioning circuit, and
This air conditioner loop includes the inner heat exchanger.The present invention be generally applied to institute it is in need between at least two pipelines into
The fluid of row heat exchange transmits.
Background technique
In certain air conditioner loops for motor vehicle, it is necessary to the cooling fluid of the hope of the high-pressure section in circuit with
From the circuit low-pressure section execute as cold source and between the same fluid being heated in exchange heat exchange or
Heat transmitting, to improve the performance in circuit.For this purpose, using so-called inner heat exchanger, because the inner heat exchanger is not intended to
It is swapped with the air of outside vehicle or with the air in passenger compartment.
In known manner, this inner heat exchanger be metal types and each end by being mounted on exchanger
Connector at portion is connected to the corresponding pipeline of the especially air conditioner loop including hose, which for example can be
Board-like type, stacking is carried out by flat tube and is constituted and by carrying out convection current with the air outside exchanger and passing through conduction
Heat exchange is executed, alternatively, the inner heat exchanger is multitube type, which is reverse-flow coaxial tubulose class
The most simple version of type then executes heat exchange and without convection current above-mentioned.
In the latter case and particularly with the fluid of such as R134a or R152, the exchanger of the coaxial tubular is total
Body:
It is limited in the internal tube of exchanger inside at least one diameter of the low-pressure section trandfer fluid from circuit
Portion channel, and
Radially outer channel radially is limited between the inner tube and the exterior tube for the shell for constituting exchanger, the diameter
Longitudinal cooling fin is typically provided with to external channel, which is designed to optimization and flows in inner passage and external channel
Heat transmitting between the fluid turned, which is distributed in the circumferential direction in the radially outer channel and the cooling fin can be fixed
Inner tube and/or exterior tube are attached between the two pipes, such as shown by file US-A-6 434 972.
It it is known that according to file KR-A-2007/0097609 and using CO2Inner heat exchanger as coolant it is outer
Internal pipeline is arranged in portion's interior of shell, and the internal pipeline not instead of coaxial tubular type, flat and formation is along shell
Longitudinal direction zigzag movement rearwardly and a forwardly, which includes the column for the adjacent vertical passage being separated by partition.
More specifically, the air conditioner loop described in this document uses so that CO2Liquid can be returned to towards the pump orifice of compressor
Throttle pipe (orifice tube), liquid and gas are separated using liquid storage device and are only recycled to by the compressor compresses
Gaseous part.
Satisfactory heat exchange efficiency in order to obtain, these known inner heat exchangers especially have following defects:
Relatively high noise grade is transmitted during operation and there must be very big length, and therefore there is huge body
Product.
Summary of the invention
It is an object of the invention to propose that a kind of heat exchanger for solving these defects, exchanger include:
Exterior tube, which has longitudinal asymmetric axis, the length along shaft centerline measurement, and the exterior tube is suitble to
In conveying low-pressure fluid, and
At least one pipeline, at least one pipeline are radially mounted to inside the exterior tube and are had multiple
It is suitable for longitudinal channel of conveying high-pressure fluid,
Exchanger includes the sound arrester that can weaken the noise by low-pressure fluid transmission.
For this purpose, exchanger according to the present invention makes the sound arrester at least partly by least one described pipeline structure
At at least one pipeline surrounds and is torsion and/or coiling 50% or more of the length along the axis.
It should be noted that coaxial exchanger compared with the prior art, multi-channel internal pipeline or each multi-pass
This longitudinal asymmetric axis around exchanger of road internal pipeline is torsion and/or disk in most of length of exterior tube
Around be arranged such that can unexpectedly realize to transmitted by low-pressure fluid noise frequency progress significantly especially include
Weaken the sound insulation of low frequency in effect ground.
Advantageously, the sound arrester can be only made of at least one described pipeline, while the sound arrester can be effective
Weaken these noise frequencies in ground.
It should also be noted that for identical obtained heat exchange efficiency, it is hot compared to the inside of the prior art above-mentioned
Exchanger is integrated into the pipeline due to the torsion and/or coiling of pipeline or each pipeline and by these channels, described more
This non-coaxial be arranged such that of each of channel interior pipeline multi-channel internal pipeline can be to exchanger of the invention
The compactedness of enhancing is assigned, this provides the exchange surface more much bigger than the internal pipeline for using the coaxial tubular of the prior art.
A preferred feature according to the present invention, at least one described pipeline are flattened type.
In the particularly advantageous embodiment of the invention, at least one described flat tube can have at least one every
The adjacent channel is separated and approximately along the first lateral ruler of at least one pipeline by plate, at least one partition
Very little extension, first lateral dimension perpendicular at least one pipeline the second lateral dimension so that the first size and
One in second size is less than another.
More advantageously, at least one described flat tube can have multiple partitions, and multiple partitions limit
The adjacent channel of at least one column, at least one described flat tube have the thickness formed by the first size and
The width formed by second size, the width are at least 5 times of the thickness, and preferably at least 10 times.
Flat tube or each flat tube can have without limitation be, for example, it is oval, oval, have can be to justify
Side or angle polygon (for example, rectangle) cross section or any other at least partly oval shape so that
Flat tube or each flat tube are in the thickness of cross section with the width much smaller than the pipeline, similar to hollow sum
The band of separation.
It should be noted that multichannel tubes according to the present invention or each multichannel tubes this flat geometry
The periphery width (for developed surface) that structure makes it possible to pipeline or each pipeline is divided relative in the pipeline
Every high-pressure fluid maximized by section, this compared to by it is one or several be not flat cylinder-shaped type or prism
The heat exchange that type is realized realizes a kind of improved heat exchange.
It is noted, however, that alternatively, internal pipeline or each internal pipeline can not be it is flat, but
Tubulose, such as with regular polygon that is circular or being for example square (that is, limiting generally cylinder-shaped or prismatic
It is not flat surface) shape.
A particular embodiment according to the present invention, at least one described pipeline are being respectively fixed to the exterior tube
Two ends two radial closures wall between can surround and along the axis at least the 75% of the exterior tube
Length on reverse and/or coiling, at least one described pipeline can include two straight axial end portions, the two are straight
Axial end portions, which axially protrude past the wall of the closure and are respectively secured to two, fluidly connects supporting element, this two
A supporting element that fluidly connects includes the fluid connecting device for high-pressure fluid, which returns in the closure comprising exchanger
It circulates in the channel in road.
According to this embodiment, described two at least one of supporting elements that fluidly connect can further include at described time
Fluid connecting device in road, the fluid connecting device be used for inside the exterior tube described in around at least one pipeline
The low-pressure fluid of circulation.
Alternatively, exchanger can be provided at least one quilt with lower section near at least one of wall of the closure
It is fastened to the branch connector for fluidly connecting flange, the branch connector is for the low-pressure fluid in circuit, flange and the stream
One in body connection supporting element is adjacent.
Another feature according to the present invention, at least one described pipeline can be radially at away from one distances of exterior tube
Surrounding and reversing and/or coil along the axis is spiral.
It should be noted that actually existing for same given hot property, pipeline according to the present invention or each pipeline
The structure of this torsion and/or spiral in the whole length of exterior tube (that is, advantageously on 90% to the 100% of the length)
It makes and makes it possible to assign the length that is substantially reduced compared to the exchanger with straight internal pipeline and therefore significant enhance
The compactedness of exchanger according to the present invention.
It should also be noted that pipeline according to the present invention or this torsion of each pipeline and/or the construction of spiral are outstanding
It has the advantages that be readily produced in the case where the pipeline of torsion.
The first example embodiment according to the present invention, at least one described pipeline surround and along the axis to be wrapped
Columnar surface is adapted to while including the windup-degree torsion between 10 ° to 80 °.
Second example embodiment according to the present invention, at least one described pipeline are circular spiral along axis coiling
It is formed simultaneously the disjunct circle for adapting to columnar surface.
Third example embodiment according to the present invention, at least one described pipeline include:
The part of-two torsions, the first end while part of the two torsions extends from exterior tube are mutual
It separates, while the part of each torsion surrounds and be preferably equivalent to along the axis 90 ° of windup-degree (that is, adopting
Turned with a quarter) torsion, and
Coupling part, the coupling part extend near the second end of exterior tube perpendicular to the axis, and will turn round
The part turned is connected to each other to the core similar to " u "-shaped, and the flank section (wing) of the core is made of these parts reversed.
It should be noted that being contemplated that flank section at least one pipeline according to the present invention rather than circular
Spiral, it is assumed that the flank section surrounds and constitutes winding along the axis.
Advantageously, exterior tube can have the thermal conductivity of the thermal conductivity lower than at least one pipeline.In other words, inner tube
Road or each internal pipeline (such as being made of the metal material with high heat conductance of such as aluminium) can be arranged to compare exterior tube
More thermally conductive, since material (typically metal) and/or the exterior tube (such as based on aluminium) that the exterior tube is made can be set
Some heat insulating coats (such as being made of reinforced plastics), the exterior tube integrally can be less thermally conductive.In fact, in the present invention,
Seek to prevent low-pressure fluid from exchanging heat with the external of inner heat exchanger.
Another feature according to the present invention, exchanger can be the inner heat exchanger for motor vehicle air conditioning circuit,
The motor vehicle air conditioning circuit includes as described in high pressure circulation and surrounding inside exterior tube at least one described pipeline
Two high-pressure sections and low-pressure section that at least one pipeline is passed through with the coolant that low pressure circulates.
Motor vehicle air conditioning circuit according to the present invention includes the inner heat exchanger and thermal expansion valve (thermal
Expansion valve), to adjust the low-pressure fluid only to circulate in exchanger with gas phase, (however the low-pressure vapor phase can be wrapped
Include the fine particles of the lubricating oil mixed with coolant) expansion.
Advantageously, circuit can be arranged to do not have liquid storage device, and the coolant fluid is not CO2And as unrestricted
The example of property is, for example, R134a, R152 or R1234yf.
It should be noted that low pressure coolant completes expansion by the thermal expansion valve in circuit according to the present invention, it should
Expansion valve is the adjustable bloating plant for accounting for the outlet temperature of the evaporator including the reflux.In contrast to this, aforementioned
Capillary type air conditioner loop must include liquid storage device, be used for the fluid of storing liquid and by liquid phase from the fluid
Turn to the gas phase separation of the drawing section of compressor.
Detailed description of the invention
Other feature, advantage and details of the invention will be by reading several conduct examples of the invention and without limitation
The following explanation of the example embodiment of offer and show, which completes referring to attached drawing, in the accompanying drawings:
Fig. 1 is the schematic diagram of the air conditioner loop according to the present invention for motor vehicle, and the air conditioner loop is comprising being also basis
Inner heat exchanger of the invention,
Fig. 2 is according to the side perspective view of the inner heat exchanger of one embodiment of the present of invention, the inner heat exchanger
It is shown to be equipped with the tube members and flange for low pressure for fluidly connecting supporting element and being connected to the circuit for high pressure,
Fig. 3 is the vertical view and side perspective view of exchanger according to the present invention, which is shown with for high pressure
The connection supporting element without Fig. 2 tube members and flange,
Fig. 4 is the detailed perspective view of the inside of an end of the exchanger of Fig. 3, shows according to the present invention first and shows
The multi-channel internal pipeline of the torsion of example,
The part of an end of the first exemplary exchanger along axial cross section and laterally observed shows according to Fig. 5
It is intended to, which has shown the geometry of the torsion of multichannel tubes and the high voltage connections of exchanger and low pressure
Connector,
Fig. 5 a is the perspective schematic view of the local excision of another exemplary exchanger according to the present invention, this is schematically
Perspective shows the geometry of another torsion of multichannel tubes and the multichannel tubes are arrived by fluidly connecting supporting element
The connection of high pressure line,
Fig. 6 is the perspective view of an end of another exemplary exchanger according to the present invention during manufacture, this is thoroughly
View, which is shown, to be inserted into exterior tube with the multichannel tubes of spiral wound,
Fig. 7 is the perspective schematic view of the local excision of an end of exchanger according to the present invention, this is schematically saturating
View, which is shown, fluidly connects the connection of supporting element to high pressure line by be fixed to multichannel tubes,
Fig. 8 is the perspective schematic view of the local excision of an end of another exchanger according to the present invention, the signal
Property perspective show another supporting element that fluidly connects by being secured to multichannel tubes to high pressure line and low-pressure line
Connection,
Fig. 9 is the schematic of the local excision similar to figure 7 of an end of another exchanger according to the present invention
View, which, which shows, fluidly connects supporting element to high pressure by be secured to several multi-channel internal pipelines
The connection of pipeline,
Figure 10 be according to the sound transmission effect show compared to respectively in Figure 11 and Figure 12 shown in have coaxial tubular
Internal pipeline two kinds of " reference material " exchangers, the exchanger that the first example according to the present invention is shown in FIG. 5 obtains
The curve graph for the improved sound insulation arrived, and
Figure 11 and Figure 12 is the axial sectional diagrammatical view illustration of two kinds of coaxial " reference material " exchangers tested in Figure 10.
Specific embodiment
Air conditioner loop 1 shown in FIG. 1 in known manner for closure circuit or " loop ", the circuit of the closure or
" loop " includes several elements inside the engine room for being distributed in vehicle other than inner heat exchanger E, is in particular compressed
Machine 2, cooler or condenser 3 and evaporator 4, and the pressurization of such as R134a, R1234yf or R152 without limitation is cold
But agent circulates in this several element.All these elements are rigid by being made of tube members part rigidity and/or flexible
Property or pipeline flexible be connected with each other, which has sealing and connecting device in each of which end.
More specifically, circuit 1 includes:
Low-pressure line BP, the low-pressure line are used for coolant is to be added via being used between evaporator 4 and compressor 2
The entrance e of the low-pressure fluid of heatBPWith the outlet s of the fluid for being therefore heatedBPConveying passes through exchanger E, and
High pressure line HP, the high pressure line are used for from compressor 2 and cooler 3 via for high-pressure fluid to be cooled
Entrance eHPWith the outlet s for the therefore cooled fluidHPThe downstream transport same fluid, thermal expansion valve 5 are arranged
In outlet sHPDownstream and evaporator 4 upstream.
Exchanger E is reverse flow type, and the exchanger is used for by being added in exchanging with from pipeline BP
The contact of the fluid of heat is conducted to cool down the same fluid from pipeline HP.For this purpose, and as shown in Figures 2 and 3, the exchange
Device E is specifically included that
The exterior tube 10 of columnar shell is formed, which is equipped near each of two end
Radial branch connector 11, the branch connector is by with right angle, axially outward bending and end have the pipe of flange 13
Part 12 extends, which is used to flow to the sealed connection of the pipeline BP in circuit 1 in the low pressure of 10 Internal Transfer of pipe, and
It is in the illustrated example at least one pipeline 20A, 20B of the inner radial of flat tube 10 (see pipeline 20A's
Fig. 6 of Fig. 5 and pipeline 20B), which includes the adjacent vertical passage 21 for the high-pressure fluid that conveying is liquid
(visible into Fig. 9 in Fig. 6) and surround and along pipe 10 longitudinal asymmetric axis X be torsion and/or coiling (see figure
5), pipeline or each pipeline 20A, 20B include two straight end sections 22 (that is, do not reverse or coil), the end sections quilt
It is separately mounted to two to fluidly connect in supporting element 23, the two fluidly connect height of the supporting element for being separated in channel 21
Pressure flows to the sealed connection of the pipeline HP in circuit.
As shown in Figure 5 and Figure 6, which respectively show have with angle [alpha] (such as being included between 30 ° to 60 °) torsion
Pipeline 20A exchanger Ei1With with surrounding and coiled along axis X as circular spiral (with disjunct circle S)
The exchanger E of pipeline 20Bi2, lowpressure stream circulates in the space being radially limited between pipeline 20A, 20B and pipe 10.
More specifically and especially as shown in Figure 4 and Figure 5, pipeline or each pipeline 20A, 20B are along axis X against pipe
It installs between the wall 14 of two radial closures of (such as passing through welding or soldering) as torsion the end 15 of 10 two circumferential directions
Or coiling, and while the straight end sections 22 of each of pipeline 20A, 20B extend axially through wall 14 of corresponding closure
It is secured to the wall (such as by welding or soldering).Therefore, each end sections 22 are axially terminated at closes more than adjacent
The wall 14 of conjunction and it is secured to two one fluidly connected in supporting element 23.
The fastening of pipeline 20A, 20B to each connection supporting element 23 are shown in Fig. 5 and Fig. 7, the figure shows at this
The concave portions 24 of the connection of the high-pressure fluid for circulating in the channel of pipeline 20A, 20B 21 in supporting element 23.Spill
The coupling part HP 24 be formed in supporting element 23 in non-through mode, and the coupling part is located in the end in channel 21
Opposite and radially around the end, which appears in inside supporting element 23.The supporting element 23 is further equipped with through-hole
25, which is fastened to the rest part in circuit 1.
In addition, Fig. 5 show the tube members 12 of each bending from be used for around pipe 10 BP connection be fused or by
The branch connector 11 of soldering arrives the fastening (such as passing through welding or soldering) that corresponding flange 13 carries out.It is seen to be, each
Flange 13 has similar to the coupling part BP 16 of the spill of supporting element 23 and its remaining part for the flange to be fastened to circuit 1
The through-hole 17 divided, which not exclusively runs through and is positioned to face the tube members 12 in 13 inner opening of flange.
Fig. 8 about the alternative solution for fluidly connecting supporting element 33 for high pressure and low pressure the closure of Fig. 7 wall 14
Place and other than the part of the spill for connecting HP fluid 34 include another spill part 36, the portion of another spill
Divide for connecting BP fluid and being arranged to accordingly pass through the flange 37 of convex, the flange of the convex is arranged to from support
Part 33 protrudes and the free space opposite between pipeline 20A, 20B and pipe 10.Fig. 8 also show the flange 37 of convex with
The fastener hole adjacent with the coupling part HP 34 of spill of the coupling part BP 36 of spill adjacent fastener hole 38 and supporting element 33
39。
Fig. 9 shows another exchanger E according to the present inventioni3, for the exchanger, in the internal pipeline that three are reversed
Fluidly connecting for the HP fluid to circulate in the channel 21 of the internal pipeline 20B of 20A or coiled coil is described with referring to Fig. 5 and Fig. 7
Fluidly connect it is similar.In the alternative solution with several pipeline 20A, especially see for being connected to three pipeline 20A
Channel 21 in the part 24 of the spill of the supporting element 23 of high-pressure fluid that circulates it is similar to the part of the spill of Fig. 7, herein
The adjacent end in the channel 21 that is arranged to and appears in supporting element 23 inside of the part of the spill of the supporting element such as in Fig. 7
Portion is opposite.
Fig. 5 a shows another exchanger E according to the present inventioni4, which includes single internal pipeline 20C, this is interior
Portion's pipeline has multiple longitudinal channels 21 and includes:
The part 20 of-two torsions1, the two torsion part it is mutual with the first end 15a from exterior tube 10
The mode separated extends, at the same the part of each torsion surround and along pipe 10 axis X with a quarter turn torsion angle
Degree torsion, and
Coupling part 202, the coupling part near the opposite end 15b of pipe 10 perpendicular to axis X extend, and
By the part 20 of torsion1It is connected to each other to the core similar to " u "-shaped, the flank section of the core is by these parts 201It constitutes.
More specifically, Fig. 5 a, which shows pipeline 20C, constitutes an end 15a from pipe 10 via vertical coupling part
202To the round trip of the other end 15b, which is risen from the part of each torsion 201Section 201a, the section
With with appear in the horizontal end that fluidly connect the 15a of the end on supporting element 43 adjacent, and the section reversed four points
One of go to up to limit U-shaped each flank section vertical section 201b。
Be secured in this example embodiment pipe 10 the connection supporting element 43 tool there are two spill part 44, will
Two parts 20 reversed in parallel that the HP fluid to circulate in pipeline 20C is connected respectively to pipeline 20C1(respectively by upper segment
201aWith lower section 201aConstitute) two gush out section 201a.BP fluid as in the previous be radially limited to pipeline 20C with
It circulates in space between pipe 10.
Referring generally to all embodiments of invention described above and example, it is noted that of the invention non-
The geometry in the channel 21 formed in coaxial internal pipeline or each internal pipeline, arrangement and number can change and
Such as comprising passing through section (example with substantially polygon, generally elliptical, oblong or analogous shape
Such as, as being in figs. 6-9 rectangle or square) channel, which is arranged to a column or several column, wherein channel
It can or can not be straight for can not can perhaps stackeding and be separated from each other the partition by partition 21a, and wherein lead to
The sum in road is at least equal to 2 and advantageously at least equal to 5.
All inner heat exchanger E as the aforementioned according to the present inventioni1And Ei2Exchanger size using as example and non-
Restrictive mode can especially include:
The total length L of exterior tube 10, it is identical compared to hot property to there is typically about 500mm or for according to this
The normal length of the energy exchanger of two times of the external length of tube of the length L of invention, the total length are less than or equal to 250mm simultaneously
And it is advantageously only 200mm,
The 10 diameter D of pipe being included between 20mm to 30mm,
Pipeline 20A, 20B thickness e being included between 2mm to 5mm, and
Pipeline 20A, 20B width l being included between 20mm to 60mm.
To exchanger E according to the present inventioni1" reference material " exchanger E' and E " sound insulation test:
To the first reverse-flow " reference material " inner heat exchanger for air conditioner loop schematically shown in Figure 11
E' is tested, and traditionally, which is coaxial tubular type, which, which has, is disposed in
Columnar inner tube 20'(exterior tube and inner tube inside exterior tube 10' are all made of aluminum), which has
Reduced diameter, and pipe 10' length L is equal to 500mm.Exchanger E' use the low-pressure fluid that circulates in pipeline 20' and
The high-pressure fluid work being included in the annular space between pipeline 20' and pipe 10', therefore use and regular phase of the invention
Anti- rule.Exchanger E' is equipped with sealably receiving pipeline 20' to two connection supporting element 23' of BP fluid and via diameter
Two connecting flange 13' of tube members 12' to the HP fluid for two bendings being connected to ground with pipe 10'.
To the second reverse-flow " reference material " inner heat exchanger for air conditioner loop schematically shown in Figure 12
E " is tested, which is also coaxial tubular type, which, which has, is disposed in outside
Pipe 10 " internal columnar internal pipeline 20 " (exterior tube and internal pipeline be all made of aluminum), which has
" length L is equal to 250mm for much bigger diameter, and pipe 10.The high-pressure fluid that circulates in exchanger E " using in pipeline 20 " and
Low-pressure fluid work in the annular space between pipeline 20 " and pipe 10 ", that is, be similar in the present invention.Exchanger
The connection supporting element 23 " and via radially with pipe 10 " to HP fluid of E " be equipped with sealably receive pipeline 20 " be connected to two
The tube members 12 " flange 13 for being connected to HP fluid " of a bending.
Finally, testing according to the present invention be similar to shown in Fig. 2-5 and Fig. 7 and exchange as described above
Device Ei1Inner heat exchanger, which is characterized in that external length of tube 10 is equal to 250mm, and exists single
Multi-channel internal pipeline 20, which is (in the exterior tube and multichannel of type reversed with about 45 ° of angle
Portion's pipeline is all made of aluminum).
Use air as the fluid of substitution coolant and in normal temperature (extraneous) and pressure (atmospheric pressure) item
To these three exchangers E', E " and E under parti1Each of the sound transmission effect be tested, due to the volume pressure of gas
Contracting, the ratio of the frequency in velocity rate by simply changing sound wave specify another biography that will be generated with Figure 10
The gas of the identical transmitting effect curve of defeated effect curves.Measurement rules below are used.
In each exchanger E', E ", Ei1Low-pressure connector downstream generate flat noise (that is, by multiple group of frequencies
At), specify closing (that is, plug is blocked) each exchanger E', E ", Ei1Upstream end thereof.By limiting, " upstream " and " downstream "
It is to be determined relative to the flow direction of low-pressure fluid.It selects with the contrary direction of fluid as audio direction, because
For along the updrift side of the low-pressure line of air conditioner loop generate noise be compressor 2 pump orifice, that is, evaporator 4 heat it is swollen
Swollen valve 5.
By downstream acoustic pressure (that is, input pressure Pe) compared with upstream acoustic pressure (that is, output pressure Ps), and in the song of Figure 10
All three curves shown in line chart correspond to ratio Ps/Pe on the vertical scale.The curve being more below is (that is, for cross
The smaller ordinate of given frequency on coordinate), exchanger E', E ", the E of measurementi1Sound insulation it is better.
Figure 10 (curve of the figure is smoothed change for readability) this graph illustrate exchanges according to the present invention
Device Ei1The sound transmission effect Ps/Pe relative to " reference material " exchanger E' and E " the sound transmission effect integrally reduce, this
The sound effect for demonstrating the noise transmission integrally reduced and therefore integrally improving, especially improves typically about very significantly
1100Hz lower frequency region below, and the identical acoustic performance for obtaining, for the exchanger E compared with exchanger E and E'i1
Compactedness with enhancing.
Claims (19)
1. a kind of heat exchanger, the heat exchanger include:
Exterior tube (10), the exterior tube have longitudinal asymmetric axis (X), the length (L) along the shaft centerline measurement, and
The exterior tube is suitable for conveying low-pressure fluid (BP), and
At least one pipeline (20A, 20B, 20C), at least one described pipeline are radially mounted to inside the exterior tube simultaneously
And at least one described pipeline has multiple longitudinal channels (21) for being suitable for conveying high-pressure fluid (HP),
The heat exchanger includes the sound arrester that can weaken the noise transmitted by the low-pressure fluid,
It is characterized in that, the sound arrester is at least partly made of at least one described pipeline, at least one described pipeline
Surround and along the axis 50% or more of the length be torsion and/or coiling.
2. heat exchanger according to claim 1, which is characterized in that at least one described pipeline (20A, 20B, 20C) is
Flattened type.
3. heat exchanger according to claim 2, which is characterized in that at least one pipeline (20A, 20B, 20C) tool
Have at least one partition (21a), at least one described partition by adjacent channel (21) separate and approximately along it is described at least
First lateral dimension (e) of one pipeline extends, second cross of first lateral dimension perpendicular at least one pipeline
To size (l), so that one in first lateral dimension and second lateral dimension is less than another.
4. heat exchanger according to claim 3, which is characterized in that at least one pipeline (20A, 20B, 20C) tool
Have multiple partitions (21a), multiple partitions limit described adjacent channel (21) of at least one column, it is described at least
One pipeline has the thickness (e) formed by first lateral dimension and the width (l) formed by second lateral dimension,
The width is at least 5 times of the thickness.
5. according to claim 1 to heat exchanger described in one in 4, which is characterized in that the sound arrester only by it is described extremely
A few pipeline (20A, 20B, 20C) constitutes and can effectively weaken the noise frequency by the low-pressure fluid (BP) transmission
Rate.
6. according to claim 1 to heat exchanger described in one in 4, which is characterized in that at least one pipeline (20A,
20B, 20C) surrounded between the wall (14) of two radial closures and along the axis (X) the length (L) at least
It is that torsion and/or coiling, the wall of described two radial closures are respectively fixed to the two of the exterior tube (10) on 75%
A end (15,15a, 15b), at least one described pipeline include two straight axial end portions (22), described two straight
Axial end portions axially protrude past the wall of the closure and be respectively secured to two fluidly connect supporting element (23,
33,43), it is described two fluidly connect supporting element include for the high-pressure fluid (HP) first fluid attachment device (24,
34,44), circulation in the channel (21) of the high-pressure fluid in the closed circuit (1) comprising the heat exchanger.
7. heat exchanger according to claim 6, which is characterized in that described two at least one fluidly connected in supporting element
A supporting element (33) that fluidly connects further comprises the second fluid attachment device (36) in the circuit (1), described second
Fluid connecting device is used to around at least one internal described pipeline (20A) of the exterior tube (10) circulate described low
It presses fluid (BP).
8. heat exchanger according to claim 6, which is characterized in that the heat exchanger is in the wall (14) of the closure
At least one near and lower section be provided at least one be secured to fluidly connect flange (13) branch connector (11,
12), the branch connector is fluidly connected for the low-pressure fluid (BP) in the circuit (1), the flange with described
One in supporting element to fluidly connect supporting element (23) adjacent.
9. according to claim 1 to heat exchanger described in one in 4, which is characterized in that at least one pipeline (20A,
20B, 20C) radially surrounded at away from (10) one distance of exterior tube and on 90% to the 100% of the length (L)
And along the axis (X) be torsion and/or coiling be spiral.
10. heat exchanger according to claim 9, which is characterized in that at least one described pipeline (20A) surrounds and edge
The axis (X) be included between 10 ° to 80 ° windup-degree (α) torsion while adapt to columnar surface.
11. heat exchanger according to claim 9, which is characterized in that at least one described pipeline (20B) is along the axis
Line (X) coiling forms the disjunct circle (S) for adapting to columnar surface while being circular spiral.
12. heat exchanger according to claim 9, which is characterized in that at least one described pipeline (20C) includes:
The part (20 of-two torsions1), from the first end of the exterior tube (10) while the part of described two torsions extends
(15a) is spaced from each other in portion, while the part of each torsion surrounds and along the axis (X) with a windup-degree
(α) torsion, and
Coupling part (202), the coupling part the exterior tube the second end (15b) nearby perpendicular to the axis
(X) extend, and the part of the torsion is connected to each other to the core similar to " u "-shaped, the side of the core by the coupling part
Alar part is made of these parts reversed.
13. according to claim 1 to heat exchanger described in one in 4, which is characterized in that the exterior tube (10), which has, to be lower than
The thermal conductivity of the thermal conductivity of at least one pipeline (20A, 20B).
14. according to claim 1 to heat exchanger described in one in 4, which is characterized in that the heat exchanger is for motor-driven
The inner heat exchanger of vehicle air conditioner loop (1), the motor vehicle air conditioning circuit include by least one pipeline (20A,
20B, 20C) in circulated with high pressure and circulated with low pressure around at least one internal described pipeline of the exterior tube (10)
Two high-pressure sections and low-pressure section (BP, HP) that coolant passes through.
15. heat exchanger according to claim 4, which is characterized in that the width is at least 10 times of the thickness.
16. heat exchanger according to claim 5, which is characterized in that the noise frequency includes low frequency.
17. heat exchanger according to claim 12, which is characterized in that the windup-degree (α) is equal to 90 °.
18. a kind of motor vehicle air conditioning circuit, which is characterized in that the motor vehicle air conditioning circuit includes according to claim 1 described in 4
Heat exchanger and thermal expansion valve (5), to adjust the low-pressure fluid (BP) that only circulates in the heat exchanger with gas phase
Expansion.
19. air conditioner loop according to claim 18, which is characterized in that the circuit is arranged to do not have liquid storage device,
The coolant is not CO2It and is R134a, R152 or R1234yf.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR2014/051942 WO2016012664A1 (en) | 2014-07-25 | 2014-07-25 | Heat exchanger such as an internal exchanger for a motor vehicle air-conditioning system and system including same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106574824A CN106574824A (en) | 2017-04-19 |
| CN106574824B true CN106574824B (en) | 2019-05-17 |
Family
ID=51492358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480081367.9A Active CN106574824B (en) | 2014-07-25 | 2014-07-25 | The heat exchanger for automotive air conditioning systems of such as internal exchanger and the system including the heat exchanger |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3172516B1 (en) |
| CN (1) | CN106574824B (en) |
| BR (1) | BR112017001575B1 (en) |
| WO (1) | WO2016012664A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3088994B1 (en) * | 2018-11-28 | 2020-12-25 | Liebherr Aerospace Toulouse Sas | HEAT EXCHANGER AND FLUID COOLING SYSTEM INCLUDING SUCH A HEAT EXCHANGER |
| EP3964372A1 (en) * | 2020-09-03 | 2022-03-09 | TI Automotive Technology Center GmbH | Tube assembly for transporting temperature control media |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984000207A1 (en) * | 1982-06-29 | 1984-01-19 | Zander & Ingestroem | Tube heat exchanger |
| JP2009041798A (en) * | 2007-08-07 | 2009-02-26 | Showa Denko Kk | Heat exchanger |
| CN202101476U (en) * | 2008-10-29 | 2012-01-04 | 德尔福技术有限公司 | Car air conditioning system and internal heat exchanger assembly used for same |
| CN102374802A (en) * | 2010-08-18 | 2012-03-14 | 汉拏空调株式会社 | Double pipe type heat exchanger and method for manufacturing the same |
| CN102460054A (en) * | 2009-04-30 | 2012-05-16 | 伊顿流体动力有限公司 | Heat exchanger |
| EP2549219A1 (en) * | 2011-07-19 | 2013-01-23 | Frederick Mark Webb | Heat exchanger |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3486489A (en) * | 1968-02-12 | 1969-12-30 | Modine Mfg Co | Oil cooler |
| DE2209325C3 (en) * | 1970-05-18 | 1978-08-03 | Noranda Metal Industries Inc., Bellingham, Wash. (V.St.A.) | Heat exchange tube |
| FR2953917B1 (en) * | 2009-12-10 | 2012-01-20 | Hutchinson | INTERNAL THERMAL EXCHANGER FOR AIR CONDITIONING CIRCUIT OF MOTOR VEHICLE AND SUCH CIRCUIT |
| DE102013201313A1 (en) * | 2012-02-23 | 2013-08-29 | Ford Global Technologies, Llc | Internal heat exchanger for air conditioner of motor vehicle, has high pressure side and low pressure side, where heat exchanger is formed in spatial-bodily manner so that pulsations of passed through refrigerants are predominantly damped |
-
2014
- 2014-07-25 EP EP14759243.0A patent/EP3172516B1/en active Active
- 2014-07-25 WO PCT/FR2014/051942 patent/WO2016012664A1/en active Application Filing
- 2014-07-25 CN CN201480081367.9A patent/CN106574824B/en active Active
- 2014-07-25 BR BR112017001575-7A patent/BR112017001575B1/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984000207A1 (en) * | 1982-06-29 | 1984-01-19 | Zander & Ingestroem | Tube heat exchanger |
| JP2009041798A (en) * | 2007-08-07 | 2009-02-26 | Showa Denko Kk | Heat exchanger |
| CN202101476U (en) * | 2008-10-29 | 2012-01-04 | 德尔福技术有限公司 | Car air conditioning system and internal heat exchanger assembly used for same |
| CN102460054A (en) * | 2009-04-30 | 2012-05-16 | 伊顿流体动力有限公司 | Heat exchanger |
| CN102374802A (en) * | 2010-08-18 | 2012-03-14 | 汉拏空调株式会社 | Double pipe type heat exchanger and method for manufacturing the same |
| EP2549219A1 (en) * | 2011-07-19 | 2013-01-23 | Frederick Mark Webb | Heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112017001575A2 (en) | 2018-01-30 |
| BR112017001575B1 (en) | 2021-01-19 |
| WO2016012664A1 (en) | 2016-01-28 |
| CN106574824A (en) | 2017-04-19 |
| EP3172516A1 (en) | 2017-05-31 |
| EP3172516B1 (en) | 2018-05-30 |
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