CN102733991B - Stirling engine heating head for enhancing convection heat transfer by utilizing rotational flow - Google Patents
Stirling engine heating head for enhancing convection heat transfer by utilizing rotational flow Download PDFInfo
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- CN102733991B CN102733991B CN201110085431.9A CN201110085431A CN102733991B CN 102733991 B CN102733991 B CN 102733991B CN 201110085431 A CN201110085431 A CN 201110085431A CN 102733991 B CN102733991 B CN 102733991B
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Abstract
The invention discloses a stirling engine heating head for enhancing convection heat transfer by utilizing rotational flow, relating to the stirling engine heating head technology. An air flow guiding device is equipped and used for guiding air flow to rotate and wash a heating head bundle in a heating cavity, so that the convection heat transfer between hot-source air and the heating head bundle can be enhanced, further the utilization ratio of the energy of the hot-source air can be increased, and the specific power of an engine is improved.
Description
Technical field
The present invention relates to a kind of Stirling-electric hybrid heating head that utilizes eddy flow strengthening convection heat exchange.
Background technique
Along with the pressure of energy crisis and environmental pollution is day by day serious, Stirling engine (claiming again heat engine) is subject to people's attention again.Stirling-electric hybrid is a kind of external-combustion engine, and the heat that outside is supplied with is delivered to the working medium of engine interior closed circulation by the heating head tube bank of motor, be further converted to mechanical work, for objects such as power or generatings.Stirling-electric hybrid can be used any type of external heat source, has overcome the narrow limitation that internal-combustion engine must use high-grade oil, the gas energy, also have in addition the thermal efficiency high, pollute less, vibrate the advantages such as little, noise is low, mechanism is simple, reliability is high, the life-span is long.
Take in the Stirling-electric hybrid heating head that combustion flame or flue gas be thermal source, the temperature of flame or flue gas is generally below 2000 ℃, and the particle content in flame or flue gas is conventionally less, radiating capacity is not strong, the quantity of heat convection is generally all far above Radiant exothermicity, or in high temperature, high particulate matter situation the quantity of heat convection and Radiant exothermicity quite [reference: Shen Jianping. Heat Transfer in Combustion System of Stirling Engine calculates. combustion science and technology, 3 (2), 1997:150-154.].Therefore, the convection heat exchange between strengthening thermal source gas and heating head tube bank has even more important effect for improving engine performance.
At traditional flue gas that utilizes, provide in the Stirling-electric hybrid of heat, flue gas is directly along heating head cavity Radial Flow, flue gas is the disposable inside and outside two-layer pipeloop that skims over heating head only, can not fully contact with heater tube bank, the turbulent extent of flue gas in heating head cavity is low, and convection heat exchange boundary layer is thicker, is unfavorable for convection heat exchange, heat utilization rate is lower, and the specific power of motor (output power of unit weight motor) is also lower.Therefore need to invent a kind of can strengthen thermal source gas restrain with heating head between the Stirling-electric hybrid heating head of convection heat exchange, gas recovery waste heat so more efficiently improves the specific power of motor simultaneously.
Summary of the invention
The object of the invention is to provide a kind of Stirling-electric hybrid heating head that utilizes eddy flow strengthening convection heat exchange, can make full use of the gas waste-heats such as flue gas of I. C. engine exhaust, industrial waste gas, fuel combustion generation, improves the specific power of motor simultaneously.
For achieving the above object, technical solution of the present invention is:
Utilize a Stirling-electric hybrid heating head for eddy flow strengthening convection heat exchange, comprise tubular heating head housing, heat-resisting cylinder, heating head tube bank, at least one suction port and at least one air outlet; Wherein,
The near-end of heating head housing is secured on Stirling-electric hybrid body, suction port is secured on the distal face of heating head housing, and air outlet is secured on the side of heating head housing, when work, thermal source gas is introduced from heating head housing far-end, from heating head housing side, draws;
Within heating head tube bank and heat-resisting jacket casing are placed in heating head housing, the madial wall of heat-resisting cylinder is centered around outside heating head tube bank with a gap, form heating chamber, outer side wall and the heating head inner walls of heat-resisting cylinder have a gap, the far-end of heat-resisting cylinder is secured on the distal face of enclosure interior, the near-end of heat-resisting cylinder is free end, and free end and engine body have a gap;
Also comprise and be positioned near heating chamber ingress and be positioned at the first airflow guiding device that heating head is restrained upstream, air-flow is rotated in heating chamber and wash away heating head tube bank, for strengthening the convection heat exchange between thermal source gas and heating head tube bank, thereby improve the capacity usage ratio of thermal source gas, and improve the specific power of motor.
Described Stirling-electric hybrid heating head, described in it, the first airflow guiding device is the impeller that comprises a plurality of blades, and blade is plane shape or three-dimension curved surface shape, and blade is fixed on impeller outer hub, and impeller outer hub is fixed on air-flow path wall.
Described Stirling-electric hybrid heating head is dismountable affixed between impeller outer hub and air-flow path wall described in it.
Described Stirling-electric hybrid heating head, described in it a plurality of blades towards adjustable, impeller aperture is adjustable.
Described Stirling-electric hybrid heating head, is dismountable affixed between blade and impeller outer hub described in it, and blade quantity is adjustable.
Described Stirling-electric hybrid heating head, described in it, the first airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is directly fixed on air-flow path wall.
Described Stirling-electric hybrid heating head, a plurality of blades towards adjustable described in it.
Described Stirling-electric hybrid heating head, is dismountable affixed between blade and air-flow path wall described in it, and blade quantity is adjustable.
Described Stirling-electric hybrid heating head, described in it, the first airflow guiding device is the disk with a plurality of tangential gaps, the outer hub of disk is fixed on air-flow path wall.
Described Stirling-electric hybrid heating head is dismountable affixed between outer hub of disk and air-flow path wall described in it.
Described Stirling-electric hybrid heating head, described in it, the first airflow guiding device is multitube, every single tube in multitube all tangentially angle be fixed on air-flow path wall, thermal source gas forms swirling eddy after multitube enters air-flow path.
Described Stirling-electric hybrid heating head, it also comprises the second airflow guiding device that is positioned at close heating chamber outlet port and is positioned at heating head tube bank downstream, further impels air-flow to rotate in heating chamber, strengthens the convection heat exchange between thermal source gas and heating head tube bank.
Described Stirling-electric hybrid heating head, described in it, the second airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is directly fixed on heat-resisting cylinder proximal end wall.
Described Stirling-electric hybrid heating head, a plurality of blades towards adjustable described in it.
Described Stirling-electric hybrid heating head, is characterized in that, between described blade and heat-resisting cylinder proximal end wall, is dismountable affixed, and blade quantity is adjustable.
Described Stirling-electric hybrid heating head, described in it, the second airflow guiding device is a plurality of gaps with tangential angle around runner center line, a plurality of gaps by directly slotting and form on heat-resisting cylinder proximal end wall.
Described Stirling-electric hybrid heating head, described in it, the second airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is secured on Stirling-electric hybrid body.
Utilize a Stirling-electric hybrid heating head for eddy flow strengthening convection heat exchange, comprise tubular heating head housing, heat-resisting cylinder, heating head tube bank, at least one suction port and at least one air outlet; Wherein,
The near-end of heating head housing is secured on Stirling-electric hybrid body, suction port is secured on the side of heating head housing, and air outlet is secured on the distal face of heating head housing, when work, thermal source gas, from heating head housing lateral leadin, is drawn from heating head housing far-end;
Within heating head tube bank and heat-resisting jacket casing are placed in heating head housing, the madial wall of heat-resisting cylinder is centered around outside heating head tube bank with a gap, form heating chamber, outer side wall and the heating head inner walls of heat-resisting cylinder have a gap, the far-end of heat-resisting cylinder is secured on the distal face of enclosure interior, the near-end of heat-resisting cylinder is free end, and free end and engine body have a gap;
Also comprise and be positioned near heating chamber ingress and be positioned at the first airflow guiding device that heating head is restrained upstream, air-flow is rotated in heating chamber and wash away heating head tube bank, for strengthening the convection heat exchange between thermal source gas and heating head tube bank, thereby improve the capacity usage ratio of thermal source gas, and improve the specific power of motor.
Described Stirling-electric hybrid heating head, described in it, the first airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is directly fixed on heat-resisting cylinder proximal end wall, or is directly fixed on Stirling-electric hybrid body.
Described Stirling-electric hybrid heating head, a plurality of blades towards adjustable described in it.
Described Stirling-electric hybrid heating head, is characterized in that, between described blade and heat-resisting cylinder proximal end wall, is dismountable affixed, and blade quantity is adjustable.
Described Stirling-electric hybrid heating head, described in it, the first airflow guiding device is a plurality of gaps with tangential angle around runner center line, a plurality of gaps by directly slotting and form on heat-resisting cylinder proximal end wall.
Described Stirling-electric hybrid heating head, it also comprises the second airflow guiding device that is positioned at close heating chamber outlet port and is positioned at heating head tube bank downstream, further impels air-flow to rotate in heating chamber, strengthens the convection heat exchange between thermal source gas and heating head tube bank.
Described Stirling-electric hybrid heating head, described in it, the second airflow guiding device is the impeller that comprises a plurality of blades, and blade is plane shape or three-dimension curved surface shape, and blade is fixed on impeller outer hub, and impeller outer hub is fixed on air-flow path wall.
Described Stirling-electric hybrid heating head is dismountable affixed between impeller outer hub and air-flow path wall described in it.
Described Stirling-electric hybrid heating head, described in it a plurality of blades of impeller towards adjustable, impeller aperture is adjustable.
Described Stirling-electric hybrid heating head, is dismountable affixed between blade and impeller outer hub described in it, and blade quantity is adjustable.
Described Stirling-electric hybrid heating head, described in it, the second airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is directly fixed on air-flow path wall.
Described Stirling-electric hybrid heating head, a plurality of blades towards adjustable described in it.
Described Stirling-electric hybrid heating head, is characterized in that, between described blade and air-flow path wall, is dismountable affixed, and blade quantity is adjustable.
Described Stirling-electric hybrid heating head, described in it, the second airflow guiding device is the disk with a plurality of tangential gaps, the outer hub of disk is fixed on air-flow path wall.
Described Stirling-electric hybrid heating head is dismountable affixed between outer hub of disk and air-flow path wall described in it.
Described Stirling-electric hybrid heating head, described in it, the second airflow guiding device is multitube, every single tube in multitube all tangentially angle be fixed on described air-flow path wall, from the gas of heating head tube bank, through multitube, leave heating head, further promote gas to rotate in heating chamber.
Described Stirling-electric hybrid heating head, its thermal source gas be the flue gas that produces of I. C. engine exhaust, industrial waste gas, fuel combustion one of them.
Described Stirling-electric hybrid heating head, described in it, heating head tube bank outer wall is provided with fin.
Described Stirling-electric hybrid heating head, described in it affixed mode be flange plate connection, bolt connection, welding, sintering, interference fit one of them.
A kind of Stirling-electric hybrid heating head that utilizes eddy flow strengthening convection heat exchange of the present invention, its airflow guiding device is different from the cyclone separator of common burner or firing chamber, can make full use of gas waste-heat, and improves the specific power of motor.
Accompanying drawing explanation
Fig. 1 is that a Stirling-electric hybrid heating head the quantity of heat convection that typically utilizes flue gas and Radiant exothermicity are with the situation of change schematic diagram of flue gas mean temperature;
Fig. 2 is a kind of structural representation that utilizes Stirling-electric hybrid heating head the first mode of execution of eddy flow strengthening convection heat exchange of the present invention; Wherein:
Fig. 2 a is outward appearance plan view;
Fig. 2 b is stereoscopic figure;
Fig. 2 c is elevation cross-sectional view;
Fig. 2 d is side view;
Fig. 3 is the decomposing schematic representation of heating head of the present invention shown in Fig. 2;
Fig. 4 is a kind of impeller type airflow guiding device schematic diagram in heating head of the present invention shown in Fig. 3; Wherein:
Fig. 4 a is plan view;
Fig. 4 b is stereoscopic figure;
Fig. 4 c is elevation cross-sectional view;
Fig. 4 d is side view;
Fig. 5 is the heat-resisting cylinder schematic diagram around hot head tube bundle in heating head of the present invention shown in Fig. 3; Wherein:
Fig. 5 a is sectional view;
Fig. 5 b is worm's eye view;
Fig. 6 is heating head housing schematic diagram of the present invention shown in Fig. 3; Wherein:
Fig. 6 a is plan view;
Fig. 6 b is elevation cross-sectional view;
Fig. 7 is the tube bank of the heating head in the present invention shown in Fig. 3 schematic diagram; Wherein:
Fig. 7 a is plan view;
Fig. 7 b is front view;
Fig. 8 is a kind of multi-tube airflow guiding device schematic diagram being fixed in heating head of the present invention shown in Fig. 3 on heating head housing distal face; Wherein:
Fig. 8 a is plan view;
Fig. 8 b is stereoscopic figure;
Fig. 8 c is elevation cross-sectional view;
Fig. 9 is a kind of many seam-type air-flows guiding device schematic diagram being fixed in heating head of the present invention shown in Fig. 3 on heating head housing distal face; Wherein:
Fig. 9 a is plan view;
Fig. 9 b is stereoscopic figure;
Fig. 9 c is front view;
Figure 10 is a kind of Multi-vane type airflow guiding device being fixed in heating head of the present invention shown in Fig. 3 on heat-resisting cylinder proximal end wall; Wherein:
Figure 10 a is worm's eye view;
Figure 10 b is stereoscopic figure;
Figure 11 is a kind of Multi-vane type airflow guiding device schematic diagram being fixed in heating head of the present invention shown in Fig. 3 on Stirling-electric hybrid body; Wherein:
Figure 11 a is plan view;
Figure 11 b is stereoscopic figure;
Figure 12 is the schematic diagram of the another kind of mode of execution of heating head of the present invention; Wherein:
Figure 12 a is decomposition assembling figure;
Figure 12 b is the stereoscopic figure after assembling;
Figure 12 c when wherein from oblique beneath near the stereoscopic figure of the Multi-vane type airflow guiding device the heat-resisting cylinder of being secured to of heating chamber entrance proximal end wall.
Embodiment
Below in conjunction with accompanying drawing, describe the first mode of execution of the present invention in detail.
Fig. 1 is one and typically take Stirling-electric hybrid heating head the quantity of heat convection that flue gas is thermal source and the Radiant exothermicity situation of change with average cigarette temperature.When average cigarette temperature is 1200 ℃, the quantity of heat convection is approximately 4 times of Radiant exothermicity; And when average cigarette temperature is 400 ℃, the quantity of heat convection is approximately 19 times of Radiant exothermicity.From simple theory analysis, strengthen convection heat exchange for making full use of fume afterheat, the specific power that improves machine has the meaning of particular importance, and especially, for middle low-temperature flue gas, effect will be more obvious.
Fig. 2 and Fig. 3 are respectively erection drawing and the decomposition erection drawings of the Stirling-electric hybrid heating head of first embodiment of the invention.Fig. 4-7 show each parts drawing.Heating head by heating head housing 5, be connected to smoke inlet 1 on heating head housing 5 distal faces, the impeller 2 of being made as pottery etc. by heat-resistant material, heating head tube bank 3, the heat-resisting cylinder 4 of being made as pottery etc. by heat-resistant material and the smoke outlet 6 being arranged on heating head housing side and form.Impeller 2 is the first airflow guiding device of present embodiment, and wherein a plurality of streamline blades are fixed on impeller outer hub, and impeller outer hub is fixed in and is positioned near heating chamber ingress and is positioned on the air-flow path wall of heating head tube bank upstream.Heat-resisting cylinder 4 is enclosed in tube bank 3 around, its far-end is annular plate 7, for being fixed to housing 5, and the gap that the upper limb of the lower edge of this plate 7 and tube bank 3 keeps about 1mm, as the space of allowing that tube bank is expanded, and direct short-circuit flows into outside tube bank outer ring without inner ring tube bank to avoid flue gas.The cylinder shape inner wall face of heat-resisting cylinder 4 and the outer rim of tube bank 3 keep the gap of 25mm left and right, and guiding flue gas is along the axial rotational flow from one end to the other side of heating head, and can play the effect of reflected radiation and insulation.The near-end of heat-resisting cylinder 4 has many R-joinings 8, forms the second airflow guiding device, flows out heat-resisting cylinder 4, and enter in the body clearance 9 outside cylinder for guiding flue gas to rotate from inside to outside.The design of housing 5 and outlet 6 should guarantee that flue gas evenly mixes in body clearance 9, makes flue gas roughly even along gas-flow resistance and the flow of circumferential all angles.
The flue gas with certain flow rate enters heating head from smoke inlet 1, as shown by arrows in FIG..After the impeller of flowing through, air-flow rotates.Swirling eddy is in heating head axial flow, and heating head tube bank is washed away in rotation, as shown by arrows in FIG..Between flue gas and tube bank 3, convection heat exchange and radiation heat transfer occur, heat is further delivered to the Stirling-electric hybrid internal working medium in pipe by tube wall, and as helium or hydrogen etc., a part of heat converts mechanical work to.The flue gas that after heat release, temperature declines flows in body clearances 9 via skewed slot 8 rotations on heat-resisting cylinder 4 at the other end of heating head, then in body clearance 9, evenly mixes by by smoke outlet 6 discharge systems, as shown by arrows in FIG..
Airflow guiding device in the present invention made to rotate smoke gas flow before leaving heating head cavity, on its stroke, can circumferentially skim over the tube bank of many row's heating heads along heating head, mechanism of its strengthening heat transfer by convection can be made description below: can simply be interpreted as at the coefficient of heat transfer roughly under constant prerequisite, per share flue gas can be washed into more multi-lined tubes bundle, has increased substantially convection heat exchange area; Also it is constant can be regarded as total convection heat exchange area (being whole heating head tube bank external surface area), but swirling eddy has strengthened the turbulent extent in heating head cavity, flow perturbation contributes to the boundary layer of destruction and attenuate convection heat exchange, thereby can increase substantially the bulk convection coefficient of heat transfer of whole flue gases.
Table 1 shown one utilize petrol engine combustion gas as the UTILIZATION OF VESIDUAL HEAT IN Stirling-electric hybrid of thermal source when intake temperature is 800 ℃, in the performance comparison installing additional before and after flue gas impeller inducer of the present invention.
Table 1 has, without Stirling-electric hybrid performance comparison in impeller flow guide device situation of the present invention
By table 1 data, can be found out, after using impeller flow guide device, outlet cigarette temperature has declined 48 ℃, and smoke heat energy utilization ratio has improved 32%, and the specific power of Stirling-electric hybrid has improved 26.7%; The circulating resistance of the flue gas 0.5kPa that only risen, this can accept completely.
In the above-described embodiments, blade is streamline three-dimension curved surface shape, but also can be designed to be easy to the plane shape of processing.Blade adjustable towards being also designed to, impeller aperture is adjustable, such as regulate the aperture of impeller with pull bar.Between blade and impeller outer hub, also can be designed to dismountable affixedly, blade quantity also can be designed to adjustable.In the above-described embodiments, between impeller outer hub and air-flow path wall, be dismountable affixed, but also can be designed to non-removable affixed.
In the above-described embodiments, the first airflow guiding device is the impeller that comprises a plurality of blades, but also can be designed to a plurality of plane shape or three-dimension curved surface shape blade around runner center line, blade is directly fixed near heating chamber ingress and is positioned on the air-flow path wall of heating head tube bank upstream.Blade towards being that fix or adjustable, between blade and air-flow path wall, can be dismountable or non-removable affixed.
In the above-described embodiments, the first airflow guiding device is the impeller that comprises a plurality of blades, but also can be designed to have the disk in a plurality of tangential gaps, example many seam-type air-flows guiding device 11 as shown in Figure 9, on a Cone Disc, tangentially offer many gaps, the outer hub of disk is fixed near heating chamber ingress and is positioned on the air-flow path wall of heating head tube bank upstream, is used for replacing impeller guiding device 2 and the suction port 1 in Fig. 2,3,4.Between the outer hub of disk and air-flow path wall, can be dismountable or non-removable affixed.Thermal source gas flow, after many seam-type air-flows guiding device 11, forms the downward air-flow of rotation, washes away heating head tube bank, to reach the object of augmentation of heat transfer.
In the above-described embodiments, the first airflow guiding device is the impeller that comprises a plurality of blades, but also can be designed to the form of multitube, multi-tube airflow guiding device 10 as shown in Figure 8 of example, every single tube in multitube all tangentially angle be fixed near heating chamber ingress and be positioned on the air-flow path wall of heating head tube bank upstream.Thermal source gas tangentially enters after described air-flow path via multi-tube airflow guiding device, forms the downward air-flow of rotation, washes away heating head tube bank, to reach the object of augmentation of heat transfer.
In the above-described embodiments, the second airflow guiding device is by a plurality of gaps with tangential angle around runner center line that directly fluting forms on heat-resisting cylinder distal end wall, but also can be designed to a plurality of plane shape or three-dimension curved surface shape blade around runner center line, as shown in figure 10, blade can directly be fixed on heat-resisting cylinder proximal end wall, blade adjustable towards being also designed to.Between described blade and heat-resisting cylinder proximal end wall, can be dismountable or non-removable affixed.
In addition, the second airflow guiding device also can not be fixed on heat-resisting cylinder proximal end wall, but be secured near heating chamber outlet port and be positioned on the Stirling-electric hybrid body in heating head tube bank downstream, be designed to a plurality of plane shape or three-dimension curved surface shape blade around runner center line, as shown in figure 11.
The present invention also can take another kind of mode of execution, is with the difference of above-mentioned mode of execution, and one or more suction ports are secured on the side of heating head housing, and one or more air outlets are secured on the distal face of heating head housing.Example layout as shown in figure 12, Multi-vane type airflow guiding device 12 is secured near heating chamber ingress and is positioned on the heat-resisting cylinder proximal end wall of heating head tube bank upstream.Thermal source gas is from heating head housing lateral leadin, after Multi-vane type airflow guiding device 12 guiding, in heating chamber, heating head tube bank is washed away in rotation, to reach the object of augmentation of heat transfer, then via being arranged near heating chamber outlet port impeller guiding device 2 rotations that are positioned at heating head tube bank downstream, upwards flow out heating head.In this mode of execution situation, be positioned near heating chamber ingress the first airflow guiding device of being positioned at heating head tube bank upstream and can be a plurality of plane shape or the three-dimension curved surface shape blade around runner center line, described blade is directly fixed on heat-resisting cylinder proximal end wall, also can be secured near heating chamber outlet port and be positioned on the Stirling-electric hybrid body in heating head tube bank downstream; Also can be a plurality of gaps with tangential angle around runner center line, described a plurality of gaps by directly slotting and form on heat-resisting cylinder proximal end wall.In this mode of execution situation, also can comprise and be positioned near heating chamber outlet port and be positioned at the second airflow guiding device that heating head is restrained downstream.Described the second airflow guiding device can be the impeller that comprises a plurality of blades, also can be around runner center line and is directly fixed in a plurality of plane shape or the three-dimension curved surface shape blade on air-flow path wall; Also can be the disk with a plurality of tangential gaps, the outer hub of disk is fixed on air-flow path wall; Also can be multitube form, every single tube in described multitube all tangentially angle be fixed on described air-flow path wall.
Stirling-electric hybrid heating head as above, its thermal source gas can be the flue gas of I. C. engine exhaust, industrial waste gas, fuel combustion generation etc.
Stirling-electric hybrid heating head as above, described affixed mode can be the modes such as flange plate connection, bolt connection, welding, sintering, interference fit.
The fin that not shown tube bank outer surface installs additional in the above-described embodiments, can decide on heating head tube bank outer wall and install fin additional or do not install fin additional according to heat transfer by convection and flow resistance situation in practice.
Claims (34)
1. utilize a Stirling-electric hybrid heating head for eddy flow strengthening convection heat exchange, comprise tubular heating head housing, heat-resisting cylinder, heating head tube bank, at least one suction port and at least one air outlet; It is characterized in that,
The near-end of heating head housing is secured on Stirling-electric hybrid body, suction port is secured on the distal face of heating head housing, and air outlet is secured on the side of heating head housing, when work, thermal source gas is introduced from heating head housing far-end, from heating head housing side, draws;
Within heating head tube bank and heat-resisting jacket casing are placed in heating head housing, the madial wall of heat-resisting cylinder is centered around outside heating head tube bank with a gap, form heating chamber, outer side wall and the heating head inner walls of heat-resisting cylinder have a gap, the far-end of heat-resisting cylinder is secured on the distal face of enclosure interior, the near-end of heat-resisting cylinder is free end, and free end and engine body have a gap;
Also comprise and be positioned near heating chamber ingress and be positioned at the first airflow guiding device that heating head is restrained upstream, air-flow is rotated in heating chamber and wash away heating head tube bank, for strengthening the convection heat exchange between thermal source gas and heating head tube bank, thereby improve the capacity usage ratio of thermal source gas, and improve the specific power of motor;
Also comprise and be positioned near heating chamber outlet port and be positioned at the second airflow guiding device that heating head is restrained downstream, further impel air-flow to rotate in heating chamber, strengthen the convection heat exchange between thermal source gas and heating head tube bank.
2. Stirling-electric hybrid heating head as claimed in claim 1, it is characterized in that, described the first airflow guiding device is the impeller that comprises a plurality of blades, and blade is plane shape or three-dimension curved surface shape, blade is fixed on impeller outer hub, and impeller outer hub is fixed on air-flow path wall.
3. Stirling-electric hybrid heating head as claimed in claim 2, is characterized in that, between described impeller outer hub and air-flow path wall, is dismountable affixed.
4. Stirling-electric hybrid heating head as claimed in claim 2, is characterized in that, described a plurality of blades towards adjustable, impeller aperture is adjustable.
5. Stirling-electric hybrid heating head as claimed in claim 2, is characterized in that, between described blade and impeller outer hub, is dismountable affixed, and blade quantity is adjustable.
6. Stirling-electric hybrid heating head as claimed in claim 1, is characterized in that, described the first airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is directly fixed on air-flow path wall.
7. Stirling-electric hybrid heating head as claimed in claim 6, is characterized in that, described a plurality of blades towards adjustable.
8. Stirling-electric hybrid heating head as claimed in claim 6, is characterized in that, between described blade and air-flow path wall, is dismountable affixed, and blade quantity is adjustable.
9. Stirling-electric hybrid heating head as claimed in claim 1, is characterized in that, described the first airflow guiding device is the disk with a plurality of tangential gaps, and the outer hub of disk is fixed on air-flow path wall.
10. Stirling-electric hybrid heating head as claimed in claim 9, is characterized in that, between the outer hub of described disk and air-flow path wall, is dismountable affixed.
11. Stirling-electric hybrid heating heads as claimed in claim 1, it is characterized in that, described the first airflow guiding device is multitube, every single tube in multitube all tangentially angle be fixed on air-flow path wall, thermal source gas forms swirling eddy after multitube enters air-flow path.
12. Stirling-electric hybrid heating head as claimed in claim 1, is characterized in that, described the second airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is directly fixed on heat-resisting cylinder proximal end wall.
13. Stirling-electric hybrid heating heads as claimed in claim 12, is characterized in that, described a plurality of blades towards adjustable.
14. Stirling-electric hybrid heating heads as claimed in claim 12, is characterized in that, between described blade and heat-resisting cylinder proximal end wall, are dismountable affixed, and blade quantity is adjustable.
15. Stirling-electric hybrid heating heads as claimed in claim 1, is characterized in that, described the second airflow guiding device is a plurality of gaps with tangential angle around runner center line, and a plurality of gaps by directly slotting and form on heat-resisting cylinder proximal end wall.
16. Stirling-electric hybrid heating head as claimed in claim 1, is characterized in that, described the second airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is secured on Stirling-electric hybrid body.
17. 1 kinds of Stirling-electric hybrid heating heads that utilize eddy flow strengthening convection heat exchange, comprise tubular heating head housing, heat-resisting cylinder, heating head tube bank, at least one suction port and at least one air outlet; It is characterized in that,
The near-end of heating head housing is secured on Stirling-electric hybrid body, suction port is secured on the side of heating head housing, and air outlet is secured on the distal face of heating head housing, when work, thermal source gas, from heating head housing lateral leadin, is drawn from heating head housing far-end;
Within heating head tube bank and heat-resisting jacket casing are placed in heating head housing, the madial wall of heat-resisting cylinder is centered around outside heating head tube bank with a gap, form heating chamber, outer side wall and the heating head inner walls of heat-resisting cylinder have a gap, the far-end of heat-resisting cylinder is secured on the distal face of enclosure interior, the near-end of heat-resisting cylinder is free end, and free end and engine body have a gap;
Also comprise and be positioned near heating chamber ingress and be positioned at the first airflow guiding device that heating head is restrained upstream, air-flow is rotated in heating chamber and wash away heating head tube bank, for strengthening the convection heat exchange between thermal source gas and heating head tube bank, thereby improve the capacity usage ratio of thermal source gas, and improve the specific power of motor;
Also comprise and be positioned near heating chamber outlet port and be positioned at the second airflow guiding device that heating head is restrained downstream, further impel air-flow to rotate in heating chamber, strengthen the convection heat exchange between thermal source gas and heating head tube bank.
18. Stirling-electric hybrid heating heads as claimed in claim 17, it is characterized in that, described the first airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, blade is directly fixed on heat-resisting cylinder proximal end wall, or is directly fixed on Stirling-electric hybrid body.
19. Stirling-electric hybrid heating heads as claimed in claim 18, is characterized in that, described a plurality of blades towards adjustable.
20. Stirling-electric hybrid heating heads as claimed in claim 18, is characterized in that, between described blade and heat-resisting cylinder proximal end wall, are dismountable affixed, and blade quantity is adjustable.
21. Stirling-electric hybrid heating heads as claimed in claim 17, is characterized in that, described the first airflow guiding device is a plurality of gaps with tangential angle around runner center line, and a plurality of gaps by directly slotting and form on heat-resisting cylinder proximal end wall.
22. Stirling-electric hybrid heating heads as claimed in claim 17, it is characterized in that, described the second airflow guiding device is the impeller that comprises a plurality of blades, and blade is plane shape or three-dimension curved surface shape, blade is fixed on impeller outer hub, and impeller outer hub is fixed on air-flow path wall.
23. Stirling-electric hybrid heating heads as claimed in claim 22, is characterized in that, between described impeller outer hub and air-flow path wall, are dismountable affixed.
24. Stirling-electric hybrid heating heads as claimed in claim 22, is characterized in that, a plurality of blades of described impeller towards adjustable, impeller aperture is adjustable.
25. Stirling-electric hybrid heating heads as claimed in claim 22, is characterized in that, between described blade and impeller outer hub, are dismountable affixed, and blade quantity is adjustable.
26. Stirling-electric hybrid heating head as claimed in claim 17, is characterized in that, described the second airflow guiding device is a plurality of blades around runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is directly fixed on air-flow path wall.
27. Stirling-electric hybrid heating heads as claimed in claim 26, is characterized in that, described a plurality of blades towards adjustable.
28. Stirling-electric hybrid heating heads as claimed in claim 26, is characterized in that, between described blade and air-flow path wall, are dismountable affixed, and blade quantity is adjustable.
29. Stirling-electric hybrid heating heads as claimed in claim 17, is characterized in that, described the second airflow guiding device is the disk with a plurality of tangential gaps, and the outer hub of disk is fixed on air-flow path wall.
30. Stirling-electric hybrid heating heads as claimed in claim 29, is characterized in that, between the outer hub of described disk and air-flow path wall, are dismountable affixed.
31. Stirling-electric hybrid heating heads as claimed in claim 17, it is characterized in that, described the second airflow guiding device is multitube, every single tube in multitube all tangentially angle be fixed on described air-flow path wall, gas from heating head tube bank leaves heating head through multitube, further promotes gas to rotate in heating chamber.
32. Stirling-electric hybrid heating heads as described in claim 1 or 17, is characterized in that, its thermal source gas be the flue gas that produces of I. C. engine exhaust, industrial waste gas, fuel combustion one of them.
33. Stirling-electric hybrid heating heads as described in claim 1 or 17, is characterized in that, described heating head tube bank outer wall is provided with fin.
34. Stirling-electric hybrid heating heads as described in claim 1 or 17, is characterized in that, described affixed mode be flange plate connection, bolt connection, welding, sintering, interference fit one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110085431.9A CN102733991B (en) | 2011-04-06 | 2011-04-06 | Stirling engine heating head for enhancing convection heat transfer by utilizing rotational flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110085431.9A CN102733991B (en) | 2011-04-06 | 2011-04-06 | Stirling engine heating head for enhancing convection heat transfer by utilizing rotational flow |
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| Publication Number | Publication Date |
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| CN102733991A CN102733991A (en) | 2012-10-17 |
| CN102733991B true CN102733991B (en) | 2014-10-29 |
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| CN201110085431.9A Expired - Fee Related CN102733991B (en) | 2011-04-06 | 2011-04-06 | Stirling engine heating head for enhancing convection heat transfer by utilizing rotational flow |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106837596A (en) * | 2017-03-31 | 2017-06-13 | 宁波华斯特林电机制造有限公司 | A kind of second-time burning biomass generator |
| CN110821706B (en) * | 2019-11-01 | 2020-04-28 | 北京福典工程技术有限责任公司 | Stirling engine and heat exchange method thereof |
| CN114576644A (en) * | 2022-03-09 | 2022-06-03 | 哈尔滨理工大学 | Novel rotatory vortex formula boiler air preheats device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5479334A (en) * | 1977-12-07 | 1979-06-25 | Tokyo Gas Co Ltd | Combustor of hot gas engine |
| JPS56101044A (en) * | 1980-01-11 | 1981-08-13 | Aisin Seiki Co Ltd | Heater head hot-gas engine |
| SU1134755A1 (en) * | 1980-06-02 | 1985-01-15 | Центральный научно-исследовательский дизельный институт | Externally heated engine |
| JPH04116308A (en) * | 1990-09-05 | 1992-04-16 | Aisin Seiki Co Ltd | Combustion device of stirling engine |
| CN200989218Y (en) * | 2006-12-08 | 2007-12-12 | 上海齐耀动力技术有限公司 | Finned heater for small thermomotor |
| CN202055933U (en) * | 2011-04-06 | 2011-11-30 | 中国科学院工程热物理研究所 | Stirling engine heating head for strengthening heat convection by utilizing rotational flow |
-
2011
- 2011-04-06 CN CN201110085431.9A patent/CN102733991B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5479334A (en) * | 1977-12-07 | 1979-06-25 | Tokyo Gas Co Ltd | Combustor of hot gas engine |
| JPS56101044A (en) * | 1980-01-11 | 1981-08-13 | Aisin Seiki Co Ltd | Heater head hot-gas engine |
| SU1134755A1 (en) * | 1980-06-02 | 1985-01-15 | Центральный научно-исследовательский дизельный институт | Externally heated engine |
| JPH04116308A (en) * | 1990-09-05 | 1992-04-16 | Aisin Seiki Co Ltd | Combustion device of stirling engine |
| CN200989218Y (en) * | 2006-12-08 | 2007-12-12 | 上海齐耀动力技术有限公司 | Finned heater for small thermomotor |
| CN202055933U (en) * | 2011-04-06 | 2011-11-30 | 中国科学院工程热物理研究所 | Stirling engine heating head for strengthening heat convection by utilizing rotational flow |
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| CN102733991A (en) | 2012-10-17 |
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