CN104918781B - Heat shield - Google Patents
Heat shield Download PDFInfo
- Publication number
- CN104918781B CN104918781B CN201380059760.3A CN201380059760A CN104918781B CN 104918781 B CN104918781 B CN 104918781B CN 201380059760 A CN201380059760 A CN 201380059760A CN 104918781 B CN104918781 B CN 104918781B
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- China
- Prior art keywords
- heat shield
- insulation layer
- heat
- thermal insulation
- flow channel
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- 239000002184 metal Substances 0.000 claims abstract description 43
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0876—Insulating elements, e.g. for sound insulation for mounting around heat sources, e.g. exhaust pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
- F01N2260/022—Exhaust treating devices having provisions not otherwise provided for for cooling the device using air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Exhaust Silencers (AREA)
- Thermal Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to heat shield, the thermal region for shield member.This heat shield is used for the thermal region of such as thermal region, particularly catalyst, exhaust manifold, turbocharger etc. of protection internal combustion engine, or is additionally operable to the regulation of battery.Generally, heat shield includes at least one sheet-metal layers.In addition to this sheet-metal layers for making heat shield that stability is presented, generally also set up by heat-barrier material, such as porous material, the thermal insulation layer being made is used as another layer.
Description
Technical field
The present invention relates to heat shield, the thermal region for shield member.This heat shield is used for such as shielding internal combustion engine
The thermal region of thermal region, particularly catalyst, exhaust manifold, turbocharger etc., or it is additionally operable to the regulation of battery.Generally,
Heat shield includes at least one sheet-metal layers., generally will be by addition to this sheet-metal layers for making heat shield that stability is presented
Heat-barrier material, such as porous material, the thermal insulation layer being made are set to another layer.
Background technology
Before thermal insulation layer is not embedded between two metallic plates, the whole surface of the thermal insulation layer is applied to what is shielded
Part is to be located on the part.
The operation of internal combustion engine etc. is influenceed by load variations, this cause at runtime interior thermal yield change.For example, being
Discharge capacity and consumption are maintained at minimum, to be heated to high temperature immediately after internal combustion engine cold start-up be necessary.For this
Individual purpose prevents the heat radiation and convection current of thermal part or heater block to the full extent there is provided heat-barrier material.The opposing party
Face, when internal combustion engine reaches its oepration at full load state, it is desirable to provide heat radiation or convection current as high as possible, to prevent thermal part
Or its element over-temperature.Whether these part non-refractories, this is even more important.
In view of the priority by shield member overheat and the durability of heat screen in itself is prevented, generally according to prior art
Heat shield arrangement in, by do not consider or only to a small extent consider reduce cold start-up when discharge capacity in the way of come
The arrangement for designing heat shield is necessary.However, for new vehicle, it is negative with part especially for hybrid vehicle
The running status of lotus and occupied an leading position with the operation phase frequently restarted.For this reason, it is important that setting
These running statuses are largely considered in meter.
The content of the invention
This is starting point of the present invention, it is therefore intended that provide heat shield, being capable of now all of operation in fact using the heat shield
Good thermal insulation in state, but allow under high thermic load have enough radiatings simultaneously.The invention further relates to being set
Put the component assembly parts of the thermal component at the heat shield of the present invention.
Heat shield according to claim 1 and component according to claim 19 assembling solve this purpose.Appurtenance
Profit gives the favourable embodiment of the heat shield of the present invention in requiring.
The present invention solves above mentioned problem, the heat shield by providing the heat shield for the thermal region for being used to shield a part
Including at least one metal level.The neighbouring metal level, is provided with and extends in the plane of layer of the metal level is arranged essentially parallel to
Another thermal insulation layer.Thus, the thermal insulation layer extends between the part and metal level to be shielded.The two layers are all preferably
The outer shape of part with to be shielded is consistent.The thermal insulation layer is made up of porous heat insulation material or including this material.Have
Sharp ground, on the surface of the thermal insulation layer away from metal level, is not provided with other layer or is provided only with according to the thermal insulation layer
Layer formed by profile so that thermal insulation layer is either directly or indirectly located on the thermal part.In the thermal insulation layer away from metal level
Surface on, the thermal insulation layer include at least one flow channel.The flow channel is formed as in the surface of the thermal insulation layer
Groove.
--- thermal part is pointed in the surface --- on thermal part if the whole surface of thermal insulation layer, thermal part and institute
The wall for stating groove defines flow channel in thermal insulation layer together.At a high temperature of the thermal part, occur by these flow channels
Convection current between the thermal part and the thermal insulation layer, guides outside by the heat between the thermal part and the thermal insulation layer
Portion, particularly when the part shows high temperature.
Therefore, flow channel of the invention is directly integrated into porous heat insulation material.Because they are formed as such groove：
When heat shield is located on thermal part, the groove closes and thereby sets up flow channel, therefore will can flow in a straightforward manner
Passage is incorporated into thermal insulation layer.Utilize the heat shield according to the present invention, it is advantageous that：For example for a cold part, the part
Convection current between heat shield is smaller, and thus only discharges seldom heat.But, if the part reached it is higher
Temperature, the radiating that can be increased by the integrated flow channel of heat screen.
For the most simplified manufacture and fixation of heat shield, preferably it is made up of several part shells, several portions
Shell is divided to connect to each other to form the heat shield annularly around part.Heat shield is particularly advantageous to be made up of two half-shells, should
Two their outside metal levels of each freedom of half-shell and their internal thermal insulation layers are constituted.But can also be by substantial amounts of part shell
It is combined into annular enclosed heat shield.Especially preferably by each several part hull shape into shell close as follows：So that
Make the intersection of the enclosure closed, (in a flush manner) passes through at least a portion flow channel in a flush manner.
Each several part shell is for example, after having been installed within around the part, be connected to each other.In this case, in particular, it is in neck
Shape protuberance office is attached, and the neck shape ledge is arranged at the fringe region of all each several part shells.With same
Mode, can be with the separately installed each several part shell.In another favourable embodiment, at least two half-shells pass through a kind of hinge
It is connected to each other so that heat shield can be installed to be an entirety.Hinge used herein can be the part individually produced,
The each several part shell is connected to each other by the part.However, it is possible that heat shield includes bending area, the bending area quilt
It is set to the integrative-structure in the metal level of heat shield.In this case, each several part shell be directly combined with each other and thereby
It is not single part.
Preferably at least one flow channel, which includes at least one, is used for what is actively or passively opened and closed or divulge information
Device.In favourable embodiment, flow channel can have at their air inlet and gas outlet closes and opens work(
Can, and can be opened or be closed by this way.This enables control over the surface temperature of the thermal part.For this
Individual purpose, it is advantageous to use the control circuit with temperature sensor, such as at thermal part or at heat shield, especially
It is on its surface.In order to control flow channel, can also use can be closed or be opened logical due to temperature controlled sensitivity
The actuator or thermo-sensitive material in road.In order to realize improved radiating, it must be determined that the opening of passage, especially in full-load conditions
Under.
By the gas of flow channel or the path of air using free convection or in car engine or extraly using cunning
Realize, or blown by active in passive manner in the case of stream (slip stream), for example, realized using fan.
Gas can also be pre-adjusted.For this purpose, it can use electrical heating or use phase-change material to be heated.As
Substitute, it can be cooled down before the passage by heat shield using the air-conditioning of vehicle.
Advantageously, heat-barrier material includes pile fabric (fleece), the pile fabric for example reinforced using ceramic binder.
This pile fabric can be molded to preform part.Flow channel can also be molded onto pile fabric away from metal simultaneously
In the surface in the direction of layer.It is possible if desired to provide extra surface treatment, such as using ceramic base high temperature adhesive or pottery
Porcelain base high-temperature coatings or paint, to reinforce the surface of thermal insulation layer by forming epidermis.This high temperature adhesive, coating and paint can be with
Tend to be formed the material of epidermis for the temperature for example between 150 DEG C to 250 DEG C.
It is suitable as heat-barrier material, glass isolator, especially by SiO2、Al2O3And/or CaO is made using adhesive
Glass isolator；Expand mica (expanded mica), basaltic mineral wool (basalt rock wool), various ceramic blocks
The high temperature material such as (ceramic mass), expanded clay or polyimides or melamine.Can also be sandwich, especially
It is with the sandwich of at least one in above-mentioned material.
The formation of flow channel and arrangement can be completed in a different manner, and the mode must adapt to hot needs, and this can
Estimated with the thermograph using the thermal part to be shielded.In terms of this, flow channel must adapt to dissipate in thermal part
The requirement of heat, and must also adapt in every case the need for being radiated in the specific region (being referred to as focus) of thermal part.Flowing
Passage can show various patterns on the surface of thermal insulation layer, such as along the Longitudinal extending direction of heat shield or its transverse direction, with
The shape of step of threads or two-stage winding (winding) is in the shape of a spiral and/or with several relative to each other with the stream of reverse flow
The shape of dynamic passage is in the shape of a spiral.In most cases it is preferable that heat shield not only includes single flow channel, but extremely
Few two flow channels formation is in thermal insulation layer, independently from each other around the part.The distance of flow channel is adapted to respectively
From radiating requirements.Therefore, they can be arranged to, in hot spot region closer to each other.The section of flow channel can be
It is constant or can be along height and/or change width of their path relative to them, so as to adapt to part in its path
Demand.The total length of flow channel, the pattern of flow channel, several flow channels may converge in their entrance or exit
Collection (pooling) is adapted to each demand to single channel etc..It is particularly advantageous that the passage in each several part shell is formed as
Flush each other so that realize that gas flows around whole part.Preferably given this passage is along heat shield
Longitudinal extending direction extends, necessary to this is not certainly.
Especially in hot spot region, it can be favourable to expand the width of the passage extended in this region, and preferably
Ground reduces its height simultaneously.So, increase the contact area between gas and part and improve the heat transfer to gas
And radiating.The section of flow channel, especially in hot spot region, can also significantly change on the flow direction of gas,
Different cross section is shown so that gas experience disturbance (turbulence), so as to improve the heat transfer to gas.
In order to improve cooling performance and make the outside thermal map (thermal map) of whole heat shield consistent, it is advantageous that
At least one first winding is provided on the hot side of thermal insulation layer (as described) and above carried in the outer surface of the thermal insulation layer
For at least one the second winding, at least one first cooling circuit on the inner surface of thermal insulation layer is obtained and in the outer of thermal insulation layer
At least one second cooling circuit on surface.This makes it possible in different directions or run in the same direction the first He
Second cooling circuit.First cooling circuit can extend parallel to the second cooling circuit, so that relative to the surface of thermal insulation layer
Plane unshifts (shift) or interlocked.In addition, they can extend as double helix or with to thermal insulation layer relative to each other
In the middle of project in the mode intersected with each other at several places extend.In particular it is preferred that air-flow passes through on the outer surface of thermal insulation layer
Obtained the second cooling circuit of the second winding, due to which ensure that cooling simple and lasting in vehicle operation, together
When do not occur in other stages of vehicle cool down and be easy to heating.First and the is used on the inner surface of thermal insulation layer and outer surface
Two cooling circuits allow more chances that thermal map is designed according to the requirement of each special operational condition.
It is substituted in and at least one first winding and the shape on the outer surface of same thermal insulation layer is formed on the inner surface of thermal insulation layer
Into at least one the second winding, it would however also be possible to employ similar design is realized in the arrangement of at least three layers thermal insulation layer, and internal layer, which has, to be used for
Recessed (recess) of at least one the first winding, the second layer is continuous and outer layer has at least one second winding
It is recessed.
10 to 500mm2Area of section, advantageously 30 to 200mm2Area of section, be especially suitable for flow channel.Each
The distance between flow channel is advantageously in the range of 5 to 100mm, more advantageously 10 between 50mm.
In the case of the flow channel arranged in the way of shape of threads, the flow channel connects on several part shells
Continuous, their inclined-plane (slope) can be 25 between 100mm, especially about 50mm.The width of passage is advantageously 3 to 30mm
Between, more advantageously 4 between 20mm and most advantageously 8 between 12mm.Especially suitable passage is high
Spend for 2 to 20mm, be advantageously 5 to 15mm and more advantageously be 5 to 10mm.
The cross sectional shape of flow channel can also change and for example be cut by using semicircular, rectangle or trapezoidal
Face adapts to actual demand.In the case of trapezoid cross section, longer base side (basic side) can be arranged on thermal part side
Or side corresponding thereto.
Ω shapes (Omega-shaped) section is also possible.Flow channel especially preferably is arranged along thermal part, because
For the good cooling effect of this generation.However, longitudinal into the angle between 5 to 45 °, advantageously about 20 ° relative to the part
Angle and inclined trend is also suitable.In preferred embodiments, the groove of flow channel is formed at least in its longitudinal direction
The section being tapered can be shown on one section of extension, is advantageously tapered in the way of taper.In addition, the section can
To be tapered and broaden at each section along the groove.
Thermal insulation layer shows and is not essential with least one metal level identical bearing of trend.On the contrary, fringe region can
With no heat-barrier material, if especially their purpose is only that heat shield being fixed to thermal part by its metal level.So
And, preferably thermal insulation layer extends at least more than the 50% of the extension plane of covering metal level, it is therefore preferable at least 80%, excellent
Selection of land is at least 90%.
At least one described metal level includes steel plate or is made up of steel plate, especially stainless steel plate, calorize steel plate
(aluminated steel sheet), the calorize steel plate (fire-aluminated steel sheet) of especially fire resisting and/
Or aludip etc..The metallic plate can have the form of smooth metal plate, or it can have indenture at least in part
(dimpled).Most preferably, the outer surface of at least one metal level has good reflectivity.Therefore, according to this hair
Bright heat shield combines reflection, convection current and insulative properties, and allows the custom design for application-specific.
It is used for shielding the part of thermal part, especially internal combustion engine, particularly in vehicle, example according to the heat shield of the present invention
Such as it is mainly car and carrier loader (utility vehicle).Therefore, the heat shield is particularly suitable for application to exhaust line, especially
It is in exhaust manifold or exhaust treatment unit, supercharging and heat exchanger unit, such as heating transmission oil
The heat exchanger of (transmission oil), in extra passenger accommodation heating and/or in battery regulation.
Some embodiments of heat shield of the invention given below.In all these embodiments, using same or similar
Reference represent same or analogous element, with avoid repeat.In the examples below, this hair will be represented in conjunction with the embodiments
Some bright elements.But, the element of each present invention can also represent this hair independently of the other elements of corresponding embodiment
Bright favourable embodiment.
Brief description of the drawings
Fig. 1 is the heat shield according to prior art；
Fig. 2 is the heat shield of the invention being made up of two part shells；
Fig. 3 and 4 is the top view of the heat shield of the present invention；
The example that Fig. 5 to 7 is orientated for the flow channel of the present invention；
Fig. 8 is the heat shield with hinge mechanism of the invention；
Another example that Fig. 9 is orientated for the flow channel of the present invention.
Embodiment
Fig. 1 shows the heat shield 1 with metal level 2.The thermal insulation layer 3 being made up of porous material is arranged to substantially parallel
In sheet-metal layers 2.Thermal insulation layer 3 is embedded into metal level 2 and reinforced by metal level 2.Metal level 2 by fire resisting calorize (fire-
Aluminated) stainless steel is constituted, and thermal insulation layer 3 is made up of the glass-fibre pad without adhesive.Sheet-metal layers 2 and thermal insulation layer 3
Their geometry is consistent with the geometry of two adjacent parts, and show by this way with protuberance three
Dimension form, such as in region 40.Heat shield 1 in Fig. 1 is actually what is be combined with second half-shell, and meets existing
There is technology.
Fig. 2 is schematically shown by the construction of two half-shells 1a and the 1b heat shield 1 constituted with decomposition view.This two
Half-shell both is set to surround the catalyst 9 as adjacent component in an annular manner.Half-shell is in itself including aluminize or stainless steel
Shell 2a, 2b, wherein being respectively embedded into thermal insulation layer 3a, 3b.It is different from thermal insulation layer of the prior art, thermal insulation layer 3a, 3b by
The fiberglass packing fixed with ceramic binder is constituted so that half-shell for good and all keeps its shape.This is for spreading over court
It is especially needed to the lasting stability of the passage 10 in the thermal insulation layer surface of part 9.
In figure 3, shown in the top view towards the surface of thermal part similar in Fig. 1 but for according to this hair
The half-shell of bright heat shield 1.Corresponding to the present invention, herein, on the surface of heat shield 1 for pointing to thermal part, groove 10a to 10d
It is molded onto in thermal insulation layer 3, can be flowed by the groove gas between thermal part and thermal insulation layer 3.For this purpose, groove 10a is extremely
10d touches the end of (reach to) thermal insulation layer 3 between its end, and therefore each includes air inlet 5a to 5d and gas outlet
6a to 6d.Unshowned complementary half-shell relaying renews and stretched groove 10a to 10d in the mounted state here.Groove 10a to 10d
Substantially semicircular section is shown, the depth capacity of its bracket groove is 8mm, and the Breadth Maximum of groove is 10mm.
In Fig. 4, the half-shell of the heat shield according to the present invention is shown in the top view on surface of thermal part is pointed to.This
Place, thermal insulation layer 3 is labeled with corrugated hacures (hatching).Enter in addition, flow channel is molded grooving 10a to 10g
Enter towards in the surface of the thermal insulation layer of thermal part, flow channel passes through thermal insulation layer to its edge.The edge 8 of metal level 2 is in direction
Several regions of the frontier zone of second half-shell are outstanding in neck shape, and form the neck of the second half-shell of correspondence by this way
The abutting region (resting area) of shape projecting edge.Reaching the neck shape projecting edge of this one end may include to be used to connect two
The passage opening of the secure component of half-shell, these passage openings are not discussed in detail herein.Alternatively, complementary edge can also
It is fixed to one another by clamping or blocking connection.
Fig. 5 shows into D in Local map A and is arranged in flow channel 10a to 10d on the surface of thermal insulation layer 3 or surface
Interior several possibility.In fig. 5, four flow channel 10a to 10d are provided altogether, its relative to thermal part the longitudinal axis into about
120 ° of angle extension.These passages are around the part and form single continuous passage by this way.This is in Fig. 5 B
Respective cross-section figure obtain, each several part shell is combination in the diagram in figure 5b.Fig. 5 B are simplification figure, and it does not reflect
Go out channel cross-section 10a to 10d to be not parallel to paper extension but be used as to the inclined helical duct of paper and extend, such as according to Fig. 5 A
Obtain.Therefore, the air inlet of passage and gas outlet are located at the front and back of paper.
Fig. 5 C also show spirally around thermal part passage 10a, 10b, 10c and 10d or more precisely they
Section, multi-layer helical is again gived herein.Although passage 10a to 10d extends parallel to each other, this is in passage 10a
It is opposite with the gas direction flowed in passage 10b and 10d with the gas direction flowed in 10c.
In figure 5d, two flow channels 10a and 10b arrangement are shown, it is spirally around thermal part.These lead to
Mutually stagger in road so that two flow channel 10a and 10b convolution (convolution) are extended in alternately nested mode.Should
Two flow channels are arranged to, and their path is effective in lateral flow.
In Local map A into C, Fig. 6 shows the arrangement of the flow channel of the longitudinal axis parallel to thermal part.Herein, scheme
6A shows the details of thermal insulation layer 3, wherein arranged parallel to each other and linearly extended four flow channel 10a can be identified
To 10d.
In fig. 6b, the section of the arrangement through the part corresponding to Fig. 6 A is shown.Passage 10a to 10d is in its longitudinal direction
Direction on --- thus the direction is orthogonal to Fig. 5 B plotting planes --- extend parallel to each other.In fig. 6b, it is possible to understand that
In addition to passage 10a to 10d, other passages are given, and heat shield 1 surrounds thermal part 9 and in this way completely
Make it adiabatic and cooling.
In figure 6 c, flow channel 10a to 10e arrangement is shown, it is corresponded largely in Fig. 6 A and 6B
The arrangement shown, is that angles of the wherein passage 10a to 10e with the longitudinal axis with thermal part 9 into about 20 ° extends, the longitudinal axis
It is horizontal-extending in figure 6 c.
In the figure 7, it is also shown for the longitudinal direction of the respective cross-section of thermal insulation layer 3, wherein flow channel 10a to 10h and thermal part
Axle extension at an angle, the longitudinal axis is horizontally extending.Both differed in addition, flow channel 10a to 10h section is compared each other
Also it is non-constant.Especially, flow channel 10c to 10f section is less than passage 10a, 10b and 10g section.In addition, passage 10c
To in small distance between 10f, therefore, the channel density in the region is higher than passage 10a, 10b, 10g and 10h.Flowing
This arrangement and design of passage can be selected for example in the hot spot region for the thermal part to be shielded, and the focus is by passage
10c to 10f is covered.In this manner it is achieved that to the more preferable cooling of focus, with hot spot region, passage 10c is into 10f
Flow velocity it is high, and further increase the density of passage.
Fig. 8 shows the another embodiment of the heat shield according to the present invention.As shown in Fig. 2 heat shield 1 is by two half-shells
1a, 1b are constituted, and still, two half-shells described herein are connected to each other by hinge 7.As has been described earlier, half-shell 10a, 10b is each
It is made up of thermal insulation layer 3a, 3b of outside metal level 2a, 2b and inside.Sheet-metal layers 2a, 2b thickness and corresponding thermal insulation layer
Ratio between 3a and 3b thickness is not necessarily to scale.In thermal insulation layer 3a, 3b, into the passage 10a to 10d of semi-circular profile
Continue to extend into paper or outside paper in a spiral manner.When two half-shells 1a, 1b of heat shield 1 were in part to be shielded 9 weeks
When enclosing using the closure of hinge 7, the end of passage 10a, 10b in half-shell 1a are in another half-shell 1b --- and it can not show here
Going out --- relaying, which renews, to be stretched, and forms continuous spiral by this way.The projecting edge 8 of two half-shells 2a, 2b is in closure
At least in part to be abut against each other in the way of, and secure component, such as clip or screw can be used, to connect.
The simplification that Fig. 9 is shown through the component comprising part to be shielded and the heat shield being set directly on the part is cut
Face, this is the another embodiment of the present invention.Herein, thermal insulation layer 3 is not single-piece, but by the layer 3 of three almost coaxials,
3', 3 " are constituted, and the layers 3 of three almost coaxials, 3', 3 " are arranged on another by such order one.The He of innermost layer 3
The passage 10a to 10d that outermost layer 3 " is included in air flow passage, i.e. outermost layer 3 " is defined by metal level 2 and in innermost layer
Passage 10a' to 10d' defined by part 9.The set-up mode in the simplification section is corresponding with mode used in Fig. 5 B.By
This, this is a simplification figure, and it does not reflect that passage 10a to 10d and 10a' are each not parallel to paper extension to 10d',
But sprawled as to the inclined helical duct of paper.Therefore, the air inlet of each passage and gas outlet are located at before paper
Below.Arrow in Fig. 9 indicates that in innermost layer 3 air of the passage 10a' into 10d' is flowed into paper from observer
When flow in a clockwise direction, and the passage 10a to 10d in outermost layer 3 " flows in a counterclockwise direction in terms of identical visual angle.
This causes pass effect another passage.If the gas flowed in the passage 10a to 10d in outermost layer 3 " is air
Flow, then this allows the gas in inner passage efficiently to cool down very much, warm (warm-up) is not adversely affected.It is used as two
The alternative solution of the opposite sense of rotation of group passage --- passage wherein shown here is in outermost layer and most interior by displacement each other
In layer, identical flow direction and/or parallel arrangement are also possible.Although from a manufacturing perspective, it is advantageous that this is sent out
Bright heat shield is designed to the thermal insulation layer formed by several insulation material layers, wherein inner surface and outer surface in thermal insulation layer
It is upper that there is passage, but thermal insulation layer can also be formed by single layer.
Claims (32)
1. the heat shield (1) of a kind of thermal region for shield member, with least one metal level (2) and thermal insulation layer (3), institute
State the porous heat insulation material that thermal insulation layer (3) includes at least arranging in the section of the neighbouring metal level (2), it is characterised in that：
On the surface for pointing to the thermal insulation layer (3) away from the metal level (2), including at least one is formed described porous
Flow channel (10) in heat-barrier material, the flow channel (10) is used as the institute for pointing to the direction away from the metal level (2)
State the groove on the surface of thermal insulation layer (3) and extend；
Wherein, it is described when the surface for pointing to the thermal insulation layer (3) away from the metal level (2) is located on thermal part
The wall of thermal part and the groove defines the flow channel (10) in thermal insulation layer (3) together, and the metal level and the thermal insulation layer are all
The outer shape of part with to be shielded is consistent.
2. heat shield (1) according to claim 1, it is characterised in that the thermal insulation layer (3) extends over the metal level
Extension plane at least 50%.
3. heat shield (1) according to claim 1, it is characterised in that the thermal insulation layer (3) extends over the metal level
Extension plane at least 80%.
4. heat shield (1) according to claim 1, it is characterised in that the thermal insulation layer (3) extends over the metal level
Extension plane at least 90%.
5. heat shield (1) according to claim 1, it is characterised in that the heat shield is by several part shell (1a, 1b) structures
Into the part shell surrounds part (9) under installment state in the way of circlewise closing.
6. heat shield (1) according to claim 1, it is characterised in that the metal level includes steel plate or is made up of steel plate.
7. heat shield (1) according to claim 1, it is characterised in that the metal level includes steel plate or is made up of steel plate,
The steel plate is the form of smooth metal plate or at least partly pitted steel plate.
8. heat shield (1) according to claim 1, it is characterised in that the metal level includes stainless steel plate and/or aluminized
Steel plate, or be made up of stainless steel plate and/or aludip.
9. heat shield (1) according to claim 1, it is characterised in that the metal level include fire resisting calorize steel plate and/or
Aludip, or be made up of fire resisting calorize steel plate and/or aludip.
10. heat shield (1) according to claim 1, it is characterised in that the heat-barrier material is pile fabric.
11. heat shield (1) according to claim 1, it is characterised in that the heat-barrier material is to utilize ceramic bond
The pile fabric of agent reinforcing or the pile fabric for being molded as profiled part.
12. heat shield (1) according to claim 1, it is characterised in that the heat-barrier material is that glass fibre pile is knitted
Thing or expansion mica or basaltic mineral wool or ceramic block or expanded clay or high temperature foam or combined material are made.
13. heat shield (1) according to claim 1, it is characterised in that the heat-barrier material is by SiO2、Al2O3And CaO
The fiberglass fleece of acquisition.
14. the heat shield (1) described in one in the claims 1, it is characterised in that the heat-barrier material is by gathering
The high temperature foam that acid imide or melamine are obtained.
15. the heat shield (1) described in one in the claims 1, it is characterised in that the heat-barrier material is not
With the combined material in the layer of material, the different materials are selected from fiberglass fleece or expansion mica or basalt rock
Cotton or ceramic block or expanded clay or high temperature foam.
16. heat shield (1) according to claim 1, it is characterised in that the thermal insulation layer be at least in subregion by
Surface treatment.
17. heat shield (1) according to claim 1, it is characterised in that the thermal insulation layer is at least profit in subregion
Reinforced, coated using ceramic base high temperature lacquer or other adhesives with ceramic base high temperature adhesive or other adhesives, risen
Permeated and/or handled by compressing at high temperature.
18. heat shield (1) according to claim 1, it is characterised in that one, two or more flow channel is with that
This mode for separating and extending is formed in the surface in the thermal insulation layer.
19. heat shield (1) according to claim 1, it is characterised in that there is higher heat load in the heat shielding
Region in the distance of the distance between each section of flow channel and/or multiple flow channels relative to each other be less than and have
Distance in the region of smaller heat load.
20. heat shield (1) according to claim 1, it is characterised in that shell has self-contained stratiform hollow shape,
To accommodate thermal part.
21. heat shield (1) according to claim 1, it is characterised in that flow channel described in one, two or more
Formed in the surface of the thermal insulation layer, the flow channel be spaced apart and by the way of at least one times or in multiple times
Surround hollow space.
22. heat shield (1) according to claim 1, it is characterised in that the shell is closed as follows：So that
The intersection of the enclosure closed, at least a portion flow channel passes through in a flush manner.
23. heat shield (1) according to claim 1, it is characterised in that form at least two independently of one another around described
The flow channel of part.
24. heat shield (1) according to claim 1, it is characterised in that the flow channel of at least one spiral surrounding is shown
Go out the distance changed between spiral convolution relative to the principal direction of the spiral.
25. heat shield (1) according to claim 1 a, it is characterised in that stream is formed at least in its longitudinal extension
The groove of dynamic passage shows rectangle or square or trapezoidal section or advantageously semicircular section.
26. heat shield (1) according to claim 1, it is characterised in that flowing is formed at least in its longitudinal extension logical
The groove in road shows the section being tapered.
27. heat shield (1) according to claim 1, it is characterised in that flowing is formed at least in its longitudinal extension logical
The groove in road shows such section, and it is in the section being tapered along the groove and the section broadened and/or the side with taper
Formula is tapered.
28. heat shield (1) according to claim 1, it is characterised in that the heat shield (1) also includes at least one and used
In the device for actively or passively closing and/or divulging information of at least one flow channel.
29. heat shield (1) according to claim 1, it is characterised in that the heat shield (1) is used to shield internal combustion engine
Part.
30. heat shield (1) according to claim 1, it is characterised in that the heat shield (1) is used to shield exhaust manifold
Or exhaust treatment unit, supercharging and/or heat exchanger unit or the part in the extra heating of passenger accommodation and/or battery regulation.
31. heat shield (1) according to claim 1, it is characterised in that the heat shield (1) is used for the heating of transmission oil
Heat exchanger.
32. the component assembly parts with a part and heat shield according to claim 1 (1), it is characterised in that described
Heat shield is arranged on part (9) place as follows：Point to the gold away from the heat shield in the thermal insulation layer --- its surface
Belong to the direction of layer (2) --- at least on some sections on the surface of the part, and the portion in that region
The groove of the surface of part and the flow channel at least on some sections together with form the flow path of fluid or define this
Flow path.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202012010993U DE202012010993U1 (en) | 2012-11-16 | 2012-11-16 | heat shield |
| DE202012010993.6 | 2012-11-16 | ||
| PCT/EP2013/073870 WO2014076204A1 (en) | 2012-11-16 | 2013-11-14 | Heat shield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104918781A CN104918781A (en) | 2015-09-16 |
| CN104918781B true CN104918781B (en) | 2017-10-24 |
Family
ID=49680991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380059760.3A Active CN104918781B (en) | 2012-11-16 | 2013-11-14 | Heat shield |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20150260075A1 (en) |
| JP (1) | JP6178963B2 (en) |
| KR (1) | KR20150084887A (en) |
| CN (1) | CN104918781B (en) |
| CA (1) | CA2889958C (en) |
| DE (2) | DE202012010993U1 (en) |
| WO (1) | WO2014076204A1 (en) |
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| DE202014006987U1 (en) * | 2014-09-01 | 2015-09-03 | Reinz-Dichtungs-Gmbh | Heat shield and shielded with such a heat shield component |
| CN104550472A (en) * | 2014-12-31 | 2015-04-29 | 无锡曙光模具有限公司 | Cutting and punching die for thermal shield of automobile exhaust system |
| DE102015113042B4 (en) | 2015-08-07 | 2023-10-12 | Dbw Advanced Fiber Technologies Gmbh | Acoustic absorption component, arrangement formed therewith and method for producing an absorption component |
| EP3141721B1 (en) * | 2015-09-10 | 2019-05-29 | ISOLITE GmbH | Reflective insulation system |
| FR3042155B1 (en) * | 2015-10-12 | 2018-03-02 | Renault S.A.S. | EXHAUST LINE PROTECTION SCREEN |
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| CN105370362A (en) * | 2015-11-30 | 2016-03-02 | 重庆祥吉机械制造有限公司 | Engine heat insulation structure |
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-
2012
- 2012-11-16 DE DE202012010993U patent/DE202012010993U1/en not_active Expired - Lifetime
-
2013
- 2013-11-14 CA CA2889958A patent/CA2889958C/en active Active
- 2013-11-14 DE DE112013005470.1T patent/DE112013005470B4/en active Active
- 2013-11-14 WO PCT/EP2013/073870 patent/WO2014076204A1/en active Application Filing
- 2013-11-14 JP JP2015542268A patent/JP6178963B2/en not_active Expired - Fee Related
- 2013-11-14 US US14/392,043 patent/US20150260075A1/en not_active Abandoned
- 2013-11-14 KR KR1020157014757A patent/KR20150084887A/en not_active Application Discontinuation
- 2013-11-14 CN CN201380059760.3A patent/CN104918781B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015536407A (en) | 2015-12-21 |
| CN104918781A (en) | 2015-09-16 |
| DE112013005470T5 (en) | 2015-09-03 |
| CA2889958A1 (en) | 2014-05-22 |
| DE202012010993U1 (en) | 2013-11-20 |
| CA2889958C (en) | 2021-02-09 |
| WO2014076204A1 (en) | 2014-05-22 |
| JP6178963B2 (en) | 2017-08-16 |
| DE112013005470B4 (en) | 2022-04-28 |
| KR20150084887A (en) | 2015-07-22 |
| US20150260075A1 (en) | 2015-09-17 |
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