CN102733991A - 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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- CN102733991A CN102733991A CN2011100854319A CN201110085431A CN102733991A CN 102733991 A CN102733991 A CN 102733991A CN 2011100854319 A CN2011100854319 A CN 2011100854319A CN 201110085431 A CN201110085431 A CN 201110085431A CN 102733991 A CN102733991 A CN 102733991A
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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 to strengthen convection heat exchange.
Background technique
Along with the pressure of energy crisis and environmental pollution is serious day by day, Stirling engine (claiming heat engine again) receives people's attention again.Stirling-electric hybrid is a kind of external-combustion engine, and the heat that the outside is supplied with is restrained the working medium that is delivered to the engine interior closed circulation through the heating head of motor, further is converted into mechanical work, is used for purposes such as power or generating.Stirling-electric hybrid can use any type of external heat source, has overcome internal-combustion engine and must use advantages such as HQ high grade is oily, the narrow limitation of the gas energy, and thermal efficiency height, pollution are less in addition in addition, vibration is little, noise is low, mechanism is simple, reliability is high, the life-span is long.
Be in the Stirling-electric hybrid heating head of thermal source with combustion flame or flue gas; The temperature of flame or flue gas is generally below 2000 ℃, and the particle content in flame or the flue gas is less usually, and radiating capacity is not strong; The convection heat exchange amount is generally all far above the radiation heat transfer amount; Perhaps under high temperature, high particulate matter situation convection heat exchange amount and radiation heat transfer amount quite [reference: Shen Jianping. the heat exchange of heat engine external combustion system is calculated. combustion science and technology, 3 (2), 1997:150-154.].Therefore, the convection heat exchange of strengthening between the tube bank of thermal source gas and heating head has even more important effect for improving engine performance.
The flue gas that utilizes traditional provides in the Stirling-electric hybrid of heat, and flue gas is directly along heating head cavity Radial Flow, flue gas is only disposable skim over heating head inside and outside two-layer pipeloop; Can not fully contact with the heater tube bank; The turbulent extent of flue gas in the heating head cavity is low, and the convection heat exchange boundary layer is thicker, is unfavorable for convection heat exchange; The heat energy utilization rate is lower, and the specific power of motor (output power of unit weight motor) is also lower.Therefore need a kind of Stirling-electric hybrid heating head that can strengthen convection heat exchange between thermal source gas and the heating head tube bank of invention, could reclaim gas waste-heat more efficiently like this, improve 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 to strengthen 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 realizing above-mentioned purpose, technical solution of the present invention is:
A kind of Stirling-electric hybrid heating head that utilizes eddy flow to strengthen convection heat exchange comprises tubular heating head housing, heat-resisting tube, 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 the Stirling-electric hybrid body; Suction port is secured on the distal face of heating head housing, and the air outlet is secured on the side of heating head housing, when work; Thermal source gas is introduced from heating head housing far-end, draws from the heating head side;
Heating head tube bank and heat-resisting jacket casing place within the heating head housing; The madial wall of heat-resisting tube is centered around outside the heating head tube bank with a gap; Form heating chamber, the outer side wall and the heating head inner walls of heat-resisting tube have a gap, and the far-end of heat-resisting tube is secured on the distal face of enclosure interior; The near-end of heat-resisting tube is a free end, and free end and engine body have a gap;
Also comprise and be positioned near the heating chamber ingress and be positioned at first airflow guiding device at the heating head tube bank upper reaches; Air-flow is rotated in heating chamber wash away the heating head tube bank; Be used to strengthen the convection heat exchange between thermal source gas and the 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, its said 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 the impeller outer hub, and the impeller outer hub is fixed on the air-flow path wall.
Described Stirling-electric hybrid heating head is dismountable affixed between its said impeller outer hub and the air-flow path wall.
Described Stirling-electric hybrid heating head, its said a plurality of blades towards can regulate, i.e. impeller aperture can regulate.
Described Stirling-electric hybrid heating head is dismountable affixed between its said blade and the impeller outer hub, i.e. the blade quantity can regulate.
Described Stirling-electric hybrid heating head, its said first airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade directly is fixed on the air-flow path wall.
Described Stirling-electric hybrid heating head, its said a plurality of blades towards can regulate.
Described Stirling-electric hybrid heating head is dismountable affixed between its said blade and the air-flow path wall, i.e. the blade quantity can regulate.
Described Stirling-electric hybrid heating head, its said first airflow guiding device is the disk with slit, a plurality of tangential, the outer hub of disk is fixed on the air-flow path wall.
Described Stirling-electric hybrid heating head is dismountable affixed between outer hub of its said disk and the air-flow path wall.
Described Stirling-electric hybrid heating head, its said first airflow guiding device is a multitube, every single tube in the multitube all tangentially angle be fixed on the air-flow path wall, thermal source gas forms swirling eddy after multitube gets into air-flow path.
Described Stirling-electric hybrid heating head, it also comprises and is positioned near the heating chamber outlet port and is positioned at second airflow guiding device in heating head tube bank downstream, further impels air-flow in heating chamber, to rotate, and strengthens the convection heat exchange of thermal source gas between restraining with heating head.
Described Stirling-electric hybrid heating head, its said second airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade directly is fixed on the heat-resisting tube proximal end wall.
Described Stirling-electric hybrid heating head, its said a plurality of blades towards can regulate.
Described Stirling-electric hybrid heating head is characterized in that, is dismountable affixed between said blade and the heat-resisting tube proximal end wall, i.e. the blade quantity can regulate.
Described Stirling-electric hybrid heating head, its said second airflow guiding device is a plurality of slits with tangential angle around the runner center line, a plurality of slits form through directly on heat-resisting tube proximal end wall, slotting.
Described Stirling-electric hybrid heating head, its said second airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is secured on the Stirling-electric hybrid body.
A kind of Stirling-electric hybrid heating head that utilizes eddy flow to strengthen convection heat exchange comprises tubular heating head housing, heat-resisting tube, 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 the Stirling-electric hybrid body; Suction port is secured on the side of heating head housing, and the air outlet is secured on the distal face of heating head housing, when work; Thermal source gas is introduced from the heating head side, draws from heating head housing far-end;
Heating head tube bank and heat-resisting jacket casing place within the heating head housing; The madial wall of heat-resisting tube is centered around outside the heating head tube bank with a gap; Form heating chamber, the outer side wall and the heating head inner walls of heat-resisting tube have a gap, and the far-end of heat-resisting tube is secured on the distal face of enclosure interior; The near-end of heat-resisting tube is a free end, and free end and engine body have a gap;
Also comprise and be positioned near the heating chamber ingress and be positioned at first airflow guiding device at the heating head tube bank upper reaches; Air-flow is rotated in heating chamber wash away the heating head tube bank; Be used to strengthen the convection heat exchange between thermal source gas and the 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, its said first airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade directly is fixed on the heat-resisting tube proximal end wall, or directly is fixed on the Stirling-electric hybrid body.
Described Stirling-electric hybrid heating head, its said a plurality of blades towards can regulate.
Described Stirling-electric hybrid heating head is characterized in that, is dismountable affixed between said blade and the heat-resisting tube proximal end wall, i.e. the blade quantity can regulate.
Described Stirling-electric hybrid heating head, its said first airflow guiding device is a plurality of slits with tangential angle around the runner center line, a plurality of slits form through directly on heat-resisting tube proximal end wall, slotting.
Described Stirling-electric hybrid heating head, it also comprises and is positioned near the heating chamber outlet port and is positioned at second airflow guiding device in heating head tube bank downstream, further impels air-flow in heating chamber, to rotate, and strengthens the convection heat exchange of thermal source gas between restraining with heating head.
Described Stirling-electric hybrid heating head, its said 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 the impeller outer hub, and the impeller outer hub is fixed on the air-flow path wall.
Described Stirling-electric hybrid heating head is dismountable affixed between its said impeller outer hub and the air-flow path wall.
Described Stirling-electric hybrid heating head, a plurality of blades of its said impeller towards can regulate, i.e. impeller aperture can regulate.
Described Stirling-electric hybrid heating head is dismountable affixed between its said blade and the impeller outer hub, i.e. the blade quantity can regulate.
Described Stirling-electric hybrid heating head, its said second airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade directly is fixed on the air-flow path wall.
Described Stirling-electric hybrid heating head, its said a plurality of blades towards can regulate.
Described Stirling-electric hybrid heating head is characterized in that, is dismountable affixed between said blade and the air-flow path wall, i.e. the blade quantity can regulate.
Described Stirling-electric hybrid heating head, its said second airflow guiding device is the disk with slit, a plurality of tangential, the outer hub of disk is fixed on the air-flow path wall.
Described Stirling-electric hybrid heating head is dismountable affixed between outer hub of its said disk and the air-flow path wall.
Described Stirling-electric hybrid heating head; Its said second airflow guiding device is a multitube; Every single tube in the multitube all tangentially angle be fixed on the said air-flow path wall, leave heating head from the gas of heating head tube bank through multitube, further promote gas in heating chamber, to rotate.
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, its said heating head tube bank outer wall is provided with fin.
Described Stirling-electric hybrid heating head, its said 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 to strengthen 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.
Description of drawings
Fig. 1 is a Stirling-electric hybrid heating head convection heat exchange amount of typically utilizing flue gas heating and the radiation heat transfer amount situation of change schematic representation with the flue gas mean temperature;
Fig. 2 is a kind of structural representation that utilizes eddy flow to strengthen first kind of mode of execution of Stirling-electric hybrid heating head of convection heat exchange of the present invention; Wherein:
Fig. 2 a is the outward appearance plan view;
Fig. 2 b is stereoscopic figure;
Fig. 2 c is an elevation cross-sectional view;
Fig. 2 d is a side view;
Fig. 3 is the decomposing schematic representation of heating head of the present invention shown in Figure 2;
Fig. 4 is a kind of impeller type airflow guiding device schematic representation in the heating head of the present invention shown in Figure 3; Wherein:
Fig. 4 a is a plan view;
Fig. 4 b is stereoscopic figure;
Fig. 4 c is an elevation cross-sectional view;
Fig. 4 d is a side view;
Fig. 5 is the heat-resisting tube schematic representation around the tube bank of heat head in the heating head of the present invention shown in Figure 3; Wherein:
Fig. 5 a is a sectional view;
Fig. 5 b is a worm's eye view;
Fig. 6 is a heating head housing schematic representation of the present invention shown in Figure 3; Wherein:
Fig. 6 a is a plan view;
Fig. 6 b is an elevation cross-sectional view;
Fig. 7 is the heating head tube bank schematic representation among the present invention shown in Figure 3; Wherein:
Fig. 7 a is a plan view;
Fig. 7 b is a front view;
Fig. 8 is fixed in a kind of multi-tube airflow guiding device schematic representation on the heating head housing distal face in the heating head of the present invention shown in Figure 3; Wherein:
Fig. 8 a is a plan view;
Fig. 8 b is stereoscopic figure;
Fig. 8 c is an elevation cross-sectional view;
Fig. 9 is fixed in a kind of many seam-type air-flows guiding device schematic representation on the heating head housing distal face in the heating head of the present invention shown in Figure 3; Wherein:
Fig. 9 a is a plan view;
Fig. 9 b is stereoscopic figure;
Fig. 9 c is a front view;
Figure 10 is for being fixed in a kind of leafy chip airflow guiding device on the heat-resisting tube proximal end wall in the heating head of the present invention shown in Figure 3; Wherein:
Figure 10 a is a worm's eye view;
Figure 10 b is stereoscopic figure;
Figure 11 is fixed in a kind of leafy chip airflow guiding device schematic representation on the Stirling-electric hybrid body in the heating head of the present invention shown in Figure 3; Wherein:
Figure 11 a is a plan view;
Figure 11 b is stereoscopic figure;
Figure 12 is the schematic representation of the another kind of mode of execution of heating head of the present invention; Wherein:
Figure 12 a is a decomposition assembling figure;
Figure 12 b is the stereoscopic figure after assembling;
Figure 12 c for wherein from oblique beneath the time near the stereoscopic figure of the leafy chip airflow guiding device on the heat-resisting tube proximal end wall of being secured to of heating chamber inlet.
Embodiment
Specify first mode of execution of the present invention below in conjunction with accompanying drawing.
Fig. 1 is a typical situation of change that is Stirling-electric hybrid heating head convection heat exchange amount and the radiation heat transfer amount of thermal source with average cigarette temperature with the flue gas.When average cigarette temperature was 1200 ℃, the convection heat exchange amount was 4 times of radiation heat transfer amount approximately; And when average cigarette temperature was 400 ℃, the convection heat exchange amount was 19 times of radiation heat transfer amount approximately.Can be known that by 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, especially for middle low-temperature flue gas, effect will be more obvious.
Fig. 2 and Fig. 3 are respectively the erection drawing and the exploded of the Stirling-electric hybrid heating head of first embodiment of the invention.Fig. 4-7 shows each parts drawing.Heating head by heating head housing 5, be connected smoke inlet 1 on heating head housing 5 distal faces, the impeller 2 processed by heat-resistant material such as pottery etc., heating head tube bank 3, the heat-resisting tube of being processed by heat-resistant material such as pottery etc. 4 and the smoke outlet 6 that is arranged on the heating head side form.Impeller 2 is first airflow guiding device of this mode of execution, and wherein a plurality of streamline blades are fixed on the impeller outer hub, and the impeller outer hub is fixed in to be positioned near the heating chamber ingress and to be positioned at heating head and restrains on the gas stream upstream conduit wall.Heat-resisting tube 4 be enclosed in tube bank 3 around; Its far-end is annular plate 7, is used for fixing on the housing 5 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 the tube bank outer ring without the inner ring tube bank to avoid flue gas.The outer rim of the cylinder shape inner wall face of heat-resisting tube 4 and tube bank 3 keeps the gap about 25mm, and axially rotation from one end to the other side is mobile along heating head for the guiding flue gas, and can play the effect of reflected radiation and insulation.The near-end of heat-resisting tube 4 has many R-joinings 8, forms second airflow guiding device, is used to guide flue gas to rotate from inside to outside and flows out heat-resisting tube 4, and get in the outer body clearance 9 of tube.The design of housing 5 and outlet 6 should guarantee that flue gas evenly mixes in body clearance 9, make flue gas roughly even along the gas-flow resistance and the flow of circumferential all angles.
Flue gas with certain flow rate gets into heating head from smoke inlet 1, shown in arrow among the figure.Behind the impeller of flowing through, air-flow rotates.Swirling eddy is in the heating head axial flow, and the heating head tube bank is washed away in rotation, shown in arrow among the figure.Between flue gas and the tube bank 3 convection heat exchange and radiation heat transfer take place, heat further is delivered to the Stirling-electric hybrid internal working medium in the pipe through tube wall, and like helium or hydrogen etc., a part of heat converts mechanical work to.The flue gas that temperature descends after the heat release flows in the body clearance 9 via 8 rotations of the skewed slot on the heat-resisting tube 4 at the other end of heating head, in body clearance 9, evenly mixes after by smoke outlet 6 discharge systems, shown in arrow among the figure then.
Airflow guiding device among the present invention makes the rotation flue gas flow before leaving the heating head cavity; On its stroke, can circumferentially skim over the tube bank of many row's heating heads along heating head; The mechanism of its Intensification of Convection Heat Transfer can be made description below: can simply be interpreted as under the roughly constant prerequisite of the coefficient of heat transfer; Per share flue gas can be washed into more multi-lined tubes bundle, has promptly increased substantially the convection heat exchange area; It is constant also 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 the heating head cavity; Flow perturbation helps to destroy the boundary layer with the attenuate convection heat exchange, thereby can increase substantially the bulk convection coefficient of heat transfer of whole flue gases.
Table 1 shown one utilize the 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 that installs additional before and after the flue gas impeller inducer of the present invention.
Table 1 has, Stirling-electric hybrid performance comparison under the no impeller flow guide device situation of the present invention
Can be found out that by table 1 data after using the impeller flow guide device, outlet cigarette temperature has descended 48 ℃, flue gas heat energy utilization rate 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 fully.
In the above-described embodiments, blade is a streamline three-dimension curved surface shape, but also can be designed to the plane shape that is easy to process.Blade adjustable towards also being designed to, i.e. impeller aperture can regulate is such as the aperture of regulating impeller with pull bar.Also can be designed to dismountable affixedly between blade and the impeller outer hub, promptly blade quantity also can be designed to adjustable.In the above-described embodiments, be dismountable affixed between impeller outer hub and the air-flow path wall, but also can be designed to non-removable affixed.
In the above-described embodiments; 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 the runner center line, blade directly is fixed near the heating chamber ingress and is positioned on the heating head tube bank gas stream upstream conduit wall.Blade towards can be fix or adjustable, can be dismountable or non-removable affixed between blade and the air-flow path wall.
In the above-described embodiments; First airflow guiding device is the impeller that comprises a plurality of blades; But also can be designed with the disk in slit, a plurality of tangential, many seam-type air-flows guiding device 11 for example shown in Figure 9 tangentially offers many slits on a circular cone dish; The outer hub of disk is fixed near the heating chamber ingress and is positioned on the heating head tube bank gas stream upstream conduit wall, is used for replacing impeller guiding device 2 and the suction port 1 among Fig. 2,3,4.Between outer hub of disk and the air-flow path wall can be dismountable or non-removable affixed.The thermal source gas stream forms the downward air-flow of rotation behind many seam-type air-flows guiding device 11, wash away the heating head tube bank, to reach the purpose of augmentation of heat transfer.
In the above-described embodiments; 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 for example shown in Figure 8, every single tube in the multitube all tangentially angle be fixed near the heating chamber ingress and be positioned on the heating head tube bank gas stream upstream conduit wall.After thermal source gas tangentially gets into said air-flow path via the multi-tube airflow guiding device, form the downward air-flow of rotation, wash away the heating head tube bank, to reach the purpose of augmentation of heat transfer.
In the above-described embodiments; Second airflow guiding device is a plurality of slits with tangential angle around the runner center line through directly fluting forms on heat-resisting tube distal end wall; But also can be designed to a plurality of plane shape or three-dimension curved surface shape blade around the runner center line; Shown in figure 10, blade can directly be fixed on the heat-resisting tube proximal end wall, blade adjustable towards also being designed to.Between said blade and the heat-resisting tube proximal end wall can be dismountable or non-removable affixed.
In addition; Second airflow guiding device also can not be fixed on the heat-resisting tube proximal end wall; Restrain on the Stirling-electric hybrid body in downstream but be secured near the heating chamber outlet port and be positioned at heating head, be designed to a plurality of plane shape or three-dimension curved surface shape blade around the runner center line, shown in figure 11.
The present invention also can take another kind of mode of execution, is that with the difference of above-mentioned mode of execution 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.Layout for example shown in Figure 12, leafy chip airflow guiding device 12 are secured near the heating chamber ingress and are positioned on the heat-resisting tube proximal end wall at the heating head tube bank upper reaches.Thermal source gas is introduced from the heating head side; After leafy chip airflow guiding device 12 guiding; The heating head tube bank is washed away in rotation in heating chamber; To reach the purpose of augmentation of heat transfer, upwards flow out heating head via being arranged in then near heating chamber outlet port and impeller guiding device 2 rotations that are positioned at heating head tube bank downstream.Under this mode of execution situation; Be positioned near the heating chamber ingress and first airflow guiding device that is positioned at the heating head tube bank upper reaches and can be a plurality of plane shape or three-dimension curved surface shape blade around the runner center line; Said blade directly is fixed on the heat-resisting tube proximal end wall, also can be secured near the heating chamber outlet port and be positioned at heating head to restrain on the Stirling-electric hybrid body in downstream; Also can be a plurality of slits with tangential angle around the runner center line, said a plurality of slits form through directly on heat-resisting tube proximal end wall, slotting.Under this mode of execution situation, also can comprise being positioned near the heating chamber outlet port and being positioned at second airflow guiding device in heating head tube bank downstream.Said second airflow guiding device can be the impeller that comprises a plurality of blades, also can be around the runner center line and directly is fixed in a plurality of plane shape or three-dimension curved surface shape blade on the air-flow path wall; Also can be the disk with slit, a plurality of tangential, the outer hub of disk is fixed on the air-flow path wall; Also can be the multitube form, every single tube in the said multitube all tangentially angle be fixed on the said air-flow path wall.
Aforesaid Stirling-electric hybrid heating head, its thermal source gas can be the flue gas of I. C. engine exhaust, industrial waste gas, fuel combustion generation etc.
Aforesaid Stirling-electric hybrid heating head, said affixed mode can be modes such as flange plate connection, bolt connection, welding, sintering, interference fit.
The fin that not shown in the above-described embodiments tube bank outer surface installs additional can decide on heating head tube bank outer wall according to heat transfer by convection and flow resistance situation in reality and install fin additional or do not install fin additional.
Claims (36)
1. a Stirling-electric hybrid heating head that utilizes eddy flow to strengthen convection heat exchange comprises tubular heating head housing, heat-resisting tube, 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 the Stirling-electric hybrid body; Suction port is secured on the distal face of heating head housing, and the air outlet is secured on the side of heating head housing, when work; Thermal source gas is introduced from heating head housing far-end, draws from the heating head side;
Heating head tube bank and heat-resisting jacket casing place within the heating head housing; The madial wall of heat-resisting tube is centered around outside the heating head tube bank with a gap; Form heating chamber, the outer side wall and the heating head inner walls of heat-resisting tube have a gap, and the far-end of heat-resisting tube is secured on the distal face of enclosure interior; The near-end of heat-resisting tube is a free end, and free end and engine body have a gap;
Also comprise and be positioned near the heating chamber ingress and be positioned at first airflow guiding device at the heating head tube bank upper reaches; Air-flow is rotated in heating chamber wash away the heating head tube bank; Be used to strengthen the convection heat exchange between thermal source gas and the heating head tube bank; Thereby improve the capacity usage ratio of thermal source gas, and improve the specific power of motor.
2. Stirling-electric hybrid heating head as claimed in claim 1; It is characterized in that said first airflow guiding device is the impeller that comprises a plurality of blades, blade is plane shape or three-dimension curved surface shape; Blade is fixed on the impeller outer hub, and the impeller outer hub is fixed on the air-flow path wall.
3. Stirling-electric hybrid heating head as claimed in claim 2 is characterized in that, is dismountable affixed between said impeller outer hub and the air-flow path wall.
4. Stirling-electric hybrid heating head as claimed in claim 2 is characterized in that, said a plurality of blades towards can regulate, i.e. impeller aperture can regulate.
5. Stirling-electric hybrid heating head as claimed in claim 2 is characterized in that, is dismountable affixed between said blade and the impeller outer hub, i.e. the blade quantity can regulate.
6. Stirling-electric hybrid heating head as claimed in claim 1 is characterized in that, said first airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade directly is fixed on the air-flow path wall.
7. Stirling-electric hybrid heating head as claimed in claim 6 is characterized in that, said a plurality of blades towards can regulate.
8. Stirling-electric hybrid heating head as claimed in claim 6 is characterized in that, is dismountable affixed between said blade and the air-flow path wall, i.e. the blade quantity can regulate.
9. Stirling-electric hybrid heating head as claimed in claim 1 is characterized in that, said first airflow guiding device is the disk with slit, a plurality of tangential, and the outer hub of disk is fixed on the air-flow path wall.
10. Stirling-electric hybrid heating head as claimed in claim 10 is characterized in that, is dismountable affixed between outer hub of said disk and the air-flow path wall.
11. Stirling-electric hybrid heating head as claimed in claim 1; It is characterized in that; Said first airflow guiding device is a multitube, every single tube in the multitube all tangentially angle be fixed on the air-flow path wall, thermal source gas forms swirling eddy after multitube gets into air-flow path.
12. Stirling-electric hybrid heating head as claimed in claim 1; It is characterized in that; Also comprise and be positioned near the heating chamber outlet port and be positioned at second airflow guiding device in heating head tube bank downstream; Further impel air-flow in heating chamber, to rotate, strengthen the convection heat exchange between the tube bank of thermal source gas and heating head.
13. Stirling-electric hybrid heating head as claimed in claim 12 is characterized in that, said second airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade directly is fixed on the heat-resisting tube proximal end wall.
14. Stirling-electric hybrid heating head as claimed in claim 13 is characterized in that, said a plurality of blades towards can regulate.
15. Stirling-electric hybrid heating head as claimed in claim 13 is characterized in that, is dismountable affixed between said blade and the heat-resisting tube proximal end wall, i.e. the blade quantity can regulate.
16. Stirling-electric hybrid heating head as claimed in claim 12 is characterized in that, said second airflow guiding device is a plurality of slits with tangential angle around the runner center line, and a plurality of slits form through directly on heat-resisting tube proximal end wall, slotting.
17. Stirling-electric hybrid heating head as claimed in claim 12 is characterized in that, said second airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade is secured on the Stirling-electric hybrid body.
18. a Stirling-electric hybrid heating head that utilizes eddy flow to strengthen convection heat exchange comprises tubular heating head housing, heat-resisting tube, 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 the Stirling-electric hybrid body; Suction port is secured on the side of heating head housing, and the air outlet is secured on the distal face of heating head housing, when work; Thermal source gas is introduced from the heating head side, draws from heating head housing far-end;
Heating head tube bank and heat-resisting jacket casing place within the heating head housing; The madial wall of heat-resisting tube is centered around outside the heating head tube bank with a gap; Form heating chamber, the outer side wall and the heating head inner walls of heat-resisting tube have a gap, and the far-end of heat-resisting tube is secured on the distal face of enclosure interior; The near-end of heat-resisting tube is a free end, and free end and engine body have a gap;
Also comprise and be positioned near the heating chamber ingress and be positioned at first airflow guiding device at the heating head tube bank upper reaches; Air-flow is rotated in heating chamber wash away the heating head tube bank; Be used to strengthen the convection heat exchange between thermal source gas and the heating head tube bank; Thereby improve the capacity usage ratio of thermal source gas, and improve the specific power of motor.
19. Stirling-electric hybrid heating head as claimed in claim 18; It is characterized in that said first airflow guiding device is a plurality of blades around the runner center line, blade is plane shape or three-dimension curved surface shape; Blade directly is fixed on the heat-resisting tube proximal end wall, or directly is fixed on the Stirling-electric hybrid body.
20. Stirling-electric hybrid heating head as claimed in claim 19 is characterized in that, said a plurality of blades towards can regulate.
21. Stirling-electric hybrid heating head as claimed in claim 19 is characterized in that, is dismountable affixed between said blade and the heat-resisting tube proximal end wall, i.e. the blade quantity can regulate.
22. Stirling-electric hybrid heating head as claimed in claim 18 is characterized in that, said first airflow guiding device is a plurality of slits with tangential angle around the runner center line, and a plurality of slits form through directly on heat-resisting tube proximal end wall, slotting.
23. Stirling-electric hybrid heating head as claimed in claim 18; It is characterized in that; Also comprise and be positioned near the heating chamber outlet port and be positioned at second airflow guiding device in heating head tube bank downstream; Further impel air-flow in heating chamber, to rotate, strengthen the convection heat exchange between the tube bank of thermal source gas and heating head.
24. Stirling-electric hybrid heating head as claimed in claim 23; It is characterized in that said second airflow guiding device is the impeller that comprises a plurality of blades, blade is plane shape or three-dimension curved surface shape; Blade is fixed on the impeller outer hub, and the impeller outer hub is fixed on the air-flow path wall.
25. Stirling-electric hybrid heating head as claimed in claim 24 is characterized in that, is dismountable affixed between said impeller outer hub and the air-flow path wall.
26. Stirling-electric hybrid heating head as claimed in claim 24 is characterized in that, a plurality of blades of said impeller towards can regulate, i.e. impeller aperture can regulate.
27. Stirling-electric hybrid heating head as claimed in claim 24 is characterized in that, is dismountable affixed between said blade and the impeller outer hub, i.e. the blade quantity can regulate.
28. Stirling-electric hybrid heating head as claimed in claim 23 is characterized in that, said second airflow guiding device is a plurality of blades around the runner center line, and blade is plane shape or three-dimension curved surface shape, and blade directly is fixed on the air-flow path wall.
29. Stirling-electric hybrid heating head as claimed in claim 28 is characterized in that, said a plurality of blades towards can regulate.
30. Stirling-electric hybrid heating head as claimed in claim 28 is characterized in that, is dismountable affixed between said blade and the air-flow path wall, i.e. the blade quantity can regulate.
31. Stirling-electric hybrid heating head as claimed in claim 22 is characterized in that, said second airflow guiding device is the disk with slit, a plurality of tangential, and the outer hub of disk is fixed on the air-flow path wall.
32. Stirling-electric hybrid heating head as claimed in claim 31 is characterized in that, is dismountable affixed between outer hub of said disk and the air-flow path wall.
33. Stirling-electric hybrid heating head as claimed in claim 23; It is characterized in that; Said second airflow guiding device is a multitube; Every single tube in the multitube all tangentially angle be fixed on the said air-flow path wall, leave heating head from the gas of heating head tube bank through multitube, further promote gas in heating chamber, to rotate.
34. like claim 1 or 18 described Stirling-electric hybrid heating heads, it 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.
35., it is characterized in that said heating head tube bank outer wall is provided with fin like claim 1 or 18 described Stirling-electric hybrid heating heads.
36. like claim 1 or 18 described Stirling-electric hybrid heating heads, it is characterized in that, said 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN102733991A true CN102733991A (en) | 2012-10-17 |
| CN102733991B CN102733991B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (3)
| 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 |
| CN110821706A (en) * | 2019-11-01 | 2020-02-21 | 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 |
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| JPS5479334A (en) * | 1977-12-07 | 1979-06-25 | Tokyo Gas Co Ltd | Combustor of hot gas engine |
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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 |
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| CN114576644A (en) * | 2022-03-09 | 2022-06-03 | 哈尔滨理工大学 | Novel rotatory vortex formula boiler air preheats device |
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|---|---|
| CN102733991B (en) | 2014-10-29 |
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