CN202613805U - Multi-arch variable-channel heat-collecting body element of flat water heater - Google Patents

Multi-arch variable-channel heat-collecting body element of flat water heater Download PDF

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Publication number
CN202613805U
CN202613805U CN 201120526797 CN201120526797U CN202613805U CN 202613805 U CN202613805 U CN 202613805U CN 201120526797 CN201120526797 CN 201120526797 CN 201120526797 U CN201120526797 U CN 201120526797U CN 202613805 U CN202613805 U CN 202613805U
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section
arch
water heater
cross
body element
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CN 201120526797
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傅太平
翁荣周
唐源欣
傅志森
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QUANZHOU SHENGFULE SOLAR TECHNOLOGY Co Ltd
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QUANZHOU SHENGFULE SOLAR TECHNOLOGY Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Abstract

A multi-arch variable-channel heat-collecting body element of a flat water heater is a pipeline which can be divided into an inlet section, a multi-arch variable-channel section, and an outlet section along the flowing direction of fluid. The multi-arch variable-channel section consists of a plurality of multi-arch variable-channel segments which are connected. For all cross sections along the axial direction of the heat-collecting body element, the circumference lengths are equal while the sectional areas are different. According to the utility model, no contact heat resistor is provided, thereby causing strong fluid turbulence and enhanced heat transfer, so that the efficiency of the water heater can be improved greatly; and in addition, the multi-arch variable-channel heat-collecting body element is simple in structure and flexible in combination, and in particular, can be used for solar building integration. The utility model also provides manufacture examples and parameter selection rules of three-arch and rectangular variable-channel structure heat-collecting body elements.

Description

The flexible road of a kind of multiple arch dull and stereotyped water heater heat collection body element
Technical field
The present invention relates to the solar energy utilization, particularly panel solar heat utilization technical field.
Background technology
Solar water heater is mainly by water tank, heat collection body, transparent cover plate, last lower collector pipe and up and down parts such as circulation pipe form.Different according to the water heater pattern with function, can minus several parts, also can increase some parts.After shining upon heat collection body, the heat collection body heat absorption mainly passes to the water in the heat collection body through heat conduction with to streamed with it, and the water after the heat absorption imports upper header, flows into water tank at last through upper circular tube again.And circulation pipe under the water in water tank warp, lower collector pipe flows into heat collection body again, and a circulation is accomplished in further heat absorption here.When the water in the water tank after a period of time, circulation heating reached the requirement temperature, can supply the user to use.
Solar water heater mainly contains vacuum tube water heater and dull and stereotyped water heater, is vacuum tube water heater in the more common use of China at present.Yet because structural restriction, it is difficult to realize secondary cycle and be inappropriate for architecture-integral that this has limited its development space.
Early stage traditional dull and stereotyped water heater is the box structure water heater of an integral body, this water heater, and its heat transfer efficiency is low, and compressive property is poor, is out of use basically at present.At present widely used is the dull and stereotyped water heater of tube wing type; Tube wing type water heater, its heat collection body element are by a metal tube (normally copper pipe), burn-on metal alar plate (normally copper coin) in its both sides and form; When shining upon this pipe wing absorber after the wing plate heat absorption; At first along wing plate heat is passed to copper pipe, with the form of heat convection, transfer heat to water again through heat conduction.This heat collection body, its load performance is better, yet its heat transfer property is poor, the thermal efficiency is low, this main cause is: 1. bigger thermal contact resistance is arranged and since the wing plate of heat absorption be weldering or riveting on the two side of pipe, have bigger thermal contact resistance in the contact position.2. heat-transfer surface (the pipe internal surface area that contacts with water) is less than heat-absorbent surface (mainly being area of foil), and heat reduces under the same conditions.3. bigger heat loss is arranged, because bigger thermal contact resistance and less thermal conductive surface (because wing plate is that line contacts with pipe) are arranged, cause the wing plate temperature to raise, radiation loss is increased, the thermal efficiency is low.4. disadvantageous fluidised form, fluid flow in the pipe of minor diameter at low speed (the Natural Circulation water heater belongs to this situation), and the turbulence degree is all very little except entrance, makes the coefficient of heat transfer between wall and the fluid little.
Summary of the invention
Because the deficiency of prior art, the present invention provides the flexible road of a kind of multiple arch dull and stereotyped water heater heat collection body element, and it is a pipeline, can significantly improve the dull and stereotyped water heater thermal efficiency.
Heat collection body element of the present invention; It is a plurality of by the flexible road of the multiple arch of this linking joint 21 (Fig. 1) through being provided with of being processed to form of mould to be the d pipe by a diameter; The heat collection body element (Fig. 1) that after its sunny slope is coated absorbing coating, forms again, Fig. 2 are this heat collection body element lateral view.The shape of the flexible road of each multiple arch joint; By its import cross section PP (Fig. 1); Three datum level decisions of intermediate cross-section ZZ (Fig. 1) and outlet qq (Fig. 1) are the basis with these three datum levels, axially connect the respective point on import cross section PP (Fig. 1) and intermediate cross-section zz (Fig. 1) circumference; With the respective point on intermediate cross-section zz (Fig. 1) and outlet qq (Fig. 1) circumference, just constitute the flexible road of multiple arch joint profile.
The flexible road of this multiple arch heat collection body element can be made up of the flexible road of different multiple arch joint 21, and axially along any cross section of heat collection body element, its girth is identical, and sectional area does not wait.
The entrance section PP and the outlet qq (Fig. 1) of the flexible road of said multiple arch joint can be identical or different rectangles (Fig. 3).
The intermediate cross-section ZZ (Fig. 1) of the flexible joint of said multiple arch be multiple arch arc-shaped surface (Fig. 4), and its end i j and both sides ai and gj are straight line, and upper base is the circular arc line W (Fig. 4) of multiple arch, and it encircles number can be odd number arbitrarily, also can be straight line.If straight line ag, then the intermediate cross-section also is a rectangle.
The intermediate cross-section ZZ (Fig. 1) of the flexible joint of said multiple arch also can be identical with the import and export rectangular cross sectional shape, and at this moment, multiple arch becomes channel section 2 (Fig. 1) and just becomes a rectangle fillet flat passage.
The flexible road of the multiple arch of this invention dull and stereotyped water heater heat collection body element, there is not thermal contact resistance in it, has increased the heat-transfer surface that contacts with water, has reduced the heat collection body component temperature, reduces the top radiation loss of heat collection body element; And be the plane owing to go to the bottom, reduce and the heat-insulation layer contact area, thus the radiation loss of heat collection body element lower portions reduced again, at the fluid main flow direction; The fluid micellar flexible road of repeatedly flowing through constantly quickens, and slows down decompression, supercharging; Form violent turbulence, in the horizontal, because domes, fluid is heated different at sunny slope and shady face; Produce Secondary Flow, the stack of main flow and Secondary Flow causes the turbulence that fluid micellar is strong, has improved the coefficient of heat transfer again.Above-mentioned all reasons make the flexible road of multiple arch of the present invention heat collection body element heat transfer property very superior; Improved dull and stereotyped water-heater efficiency greatly; Be the desirable heat collection body element of dull and stereotyped water heater, again owing to simple in structure, but the flexible combination installation site requirement different with adaptation with satisfying various heat exchange face needs; Therefore, it also be particularly useful for solar building integrated in.
Description of drawings
Fig. 1 is the flexible road of a multiple arch of the present invention dull and stereotyped water heater heat collection body element sketch map.
Fig. 2 is the flexible road of a multiple arch of the present invention dull and stereotyped water heater heat collection body element lateral view.
Fig. 3 is that the flexible road of multiple arch of the present invention joint is imported and exported sectional view.
Fig. 4 is the flexible road of multiple arch of the present invention joint intermediate cross-section figure.
Fig. 5 is embodiment 2 intermediate rectangular sectional views.
The specific embodiment
Consider the mm of diameter d=(30-80), long L=(the multiple arch accommodation road heat collection body element that 1000-2000mm) metal circular tube forms.Axially, L is divided into three sections, be respectively entrance 1 (Fig. 1), multiple arch becomes channel section 2 (Fig. 1) and outlet section 3 (Fig. 1), is linked in sequence.The inlet segment length is l 1Equal exit length l 2,l 1=l 2=(60-100) mm is advisable, thereby multiple arch change channel section 2 length are l=(L-2 l 1) mm, with its N five equilibrium, N=(6-8); Can make the flexible road of multiple arch joint 21 (Fig. 1) of N; The shape of the flexible road joint of each multiple arch 21 (Fig. 1) is by its three datum level shape decisions, and its entrance section PP (Fig. 1) and outlet qq (Fig. 1) are rectangle (Fig. 3), the high H of this rectangle P q=(6-7) mm, then its end B P q=(π d/2-H P q) mm, wherein between the cross sectional shape of cross section zz (Fig. 1) be multiple arch arc-shaped surface (Fig. 4).The ij that goes to the bottom of this arc-shaped surface (Fig. 4) is a straight line, the long B of the ij that goes to the bottom Z=(B P q-6) mm is advisable; The height of dual-side ai and gj is Hz=(H P q+ △) mm, △ is the central cross-section height H ZWith import depth of section H PqPoor, get the mm of △=(1-6), then can confirm the high H of multiple arch arc-shaped surface ZFor making the upper base multiple arch circular arc line W of multiple arch arc-shaped surface (Fig. 4), link a g line, with a g line M five equilibrium, can make M skene arch, the pitch t=B of its skene arch Z/ M; To the skene arch of each, as long as confirm any three points on this circular arc line, like initial point, terminal point and mid point are just can confirm this circular arc line.Therefore each node of M five equilibrium can be used as the initial point and the terminal point of each circular arc line of apsides on a g line.The other of the circular arc line of apsides is the mid point of each circular arc line of apsides a bit; If get fixed each circular arc line of apsides mid point distance h=(3+0.5 △) mm to a g line (being the string of a musical instrument of each circular arc line of apsides); Then can confirm the mid point of each circular arc; Can make each circular arc line of apsides like this, thereby make multiple arch arc-shaped surface (Fig. 4), be i.e. intermediate cross-section zz (Fig. 1).
The calculating girth C of cross section zz (Fig. 1) wherein 1For
C1=B Z+ 2Hz
Figure DEST_PATH_DEST_PATH_IMAGE001
Figure DEST_PATH_949810DEST_PATH_IMAGE002
(angle is pressed radian and is calculated)
Because after caliber d confirmed, its former garden girth C also confirmed, but the calculating girth C of intermediate cross-section zz (Fig. 1) 1, generally being not equal to former garden girth C, therefore to check.For this reason, set permission relative error ε ,If calculate relative error
Figure DEST_PATH_DEST_PATH_IMAGE003
Satisfy allowable error ε requirement, think that then selected parameter is suitable, otherwise, then finely tune △, recomputate C 1Till satisfying error requirements.
With three datum levels serves as that the basis vertically connects the respective point and the respective point on central cross-section circumference and the outlet circumference on import cross-sectional circumference and the central cross-section circumference, then forms a multiple arch accommodation road and saves profile.
The arch number of central cross-section upper base can be an odd number arbitrarily, but also needn't be too much, so that make, takes all factors into consideration each factor, gets three arches, single arch or straight line and is advisable, and forms single arch respectively, and three arches save with the flexible road of rectangle.For three the arch, by the first, the 3rd the arch epirelief, second the arch recessed layout (Fig. 4); For single arch, then arrange, so that form slick and sly transition curve by epirelief; For straight line, then the intermediate cross-section is rectangle (Fig. 5), its end B Z1=(B P q-6) mm, then its high H Z1=H Z1=( D ∕ 2-B Z1) mm.At this moment, it calculates arc length C 1Necessarily equal former garden girth C, so needn't check.
The cross sectional shape of cross section zz (Fig. 1) is as identical with the import and export rectangular cross sectional shape wherein, and at this moment, multiple arch becomes channel section 2 (Fig. 1) and just becomes a rectangle fillet flat passage, and its height is advisable with (6-7) mm.
Embodiment example one:---threeEncircle the restraining of flexible road and make example
Consider diameter d=76mm, the pipe of long L=1856mm is got entrance, outlet segment length l 1=l 2=80mm, then the flexible road segment length of multiple arch is 1696mm, is divided into 8 five equilibriums, N=8, the long l=212mm of every five equilibrium, the three arch accommodations that can make 8 joints save.
The import and export cross section of each the flexible road of three arches joint is made as rectangle (Fig. 3), the high H in both sides P q=6mm, end B P q=
Figure DEST_PATH_711279DEST_PATH_IMAGE004
D ∕ 2-H P q=113.38mm.
The intermediate cross-section of each the flexible road of three arches joint is three arch arc-shaped surfaces (Fig. 4), M=3, its end B z=(B P q-6)=and 107.38mm, if the intermediate cross-section height H ZWith import depth of section H P qDifference △=3mm, then H Z=H P q+ △=9mm and each arcuate midway point be to the distance h=3+1.5=4.5mm of its string of a musical instrument ag line, pitch t=Bz/M=35.79mm, thereby confirmed the initial point of each circular arc line of apsides, terminal point a, c, e, g and each circular arc line of apsides mid point b, d, f.Thereby can make ThreeCircular arc ogive W (Fig. 4), thus confirmed the intermediate cross-section.
Check: if allow relative error ε=1%
Through calculating, former garden girth c=238.76mm calculates girth c 1=237.23mm, its relative error is 0.6%＜1%, meets the demands, selected parameter is suitable.
The respective point and the respective point on intermediate cross-section and the outlet circumference that vertically link on import cross-sectional circumference and the intermediate cross-section circumference just make the flexible road of three arches joint, for the flexible road of three arches joint, first and third arch epirelief, the recessed layout of second arch
Embodiment example two:---example is made in rectangle flexible road restraining
Get a diameter d=76mm, the pipe of long L=1856mm is got entrance, outlet segment length l 1=l 2=80mm, then the flexible road segment length of multiple arch is 1696mm, is divided into 8 five equilibriums, N=8, the long l=122mm of every five equilibrium, the flexible road of rectangle that can make 8 joints saves.
The import cross section and the outlet of the flexible road of the rectangle of every joint joint are rectangle (Fig. 3), the high H in both sides P q=6mm, then end B P q=(
Figure DEST_PATH_165263DEST_PATH_IMAGE004
D/2-H P q)=113.38mm, the intermediate cross-section of the flexible road of the rectangle of every joint joint is rectangle (Fig. 5), its end B Z1=B Pq-6=107.38mm, then high H Z1=
Figure DEST_PATH_364163DEST_PATH_IMAGE004
D/2-B Z1=12mm. thereby can make the intermediate cross-section of rectangle.
Vertically respective point on connection import cross-sectional circumference and the intermediate cross-section circumference and the respective point on intermediate cross-section circumference and the outlet circumference then make the flexible road of rectangle joint.
For the flexible road of rectangle joint, it calculates girth C 1Equal former garden girth C, so needn't check calculating.

Claims (4)

1. the flexible road of a multiple arch dull and stereotyped water heater heat collection body element is a pipeline, longshore current body flow direction, and subentry section, multiple arch become channel section and outlet section, it is characterized in that multiple arch becomes channel section and is made up of the flexible road of a plurality of multiple arch that are connected each other joint.
2. dull and stereotyped water heater heat collection body element according to claim 1; It is characterized in that of three the datum level decisions of the flexible road of multiple arch joint by its import cross section, intermediate cross-section and outlet; The import cross section can be identical or different rectangles with the outlet; And the intermediate cross-section is the multiple arch arc-shaped surface, and it is gone to the bottom and the both sides height is straight line, and upper base is multiple arch circular arc line W.
3. dull and stereotyped water heater heat collection body element according to claim 1 is characterized in that the flexible joint of three arches, and it is long to be 212mm, and the import and export cross section is a rectangle, the high H of rectangle P q=6mm, end B P q=113.38mm; The cross section is the three-arc arcuate surface wherein, the B that goes to the bottom of this three-arc arcuate surface z=107.38mm, high H z=9mm, each arcuate midway point is to its string of a musical instrument distance h=4.5mm, pitch t=35.79mm.
4. dull and stereotyped water heater heat collection body element according to claim 1 is characterized in that the flexible joint of rectangle, and it is long to be 212mm, and the import and export cross section is a rectangle, the high H of rectangle P q=113.38mm; The cross section also is a rectangle wherein, the B that goes to the bottom of this rectangle Z1=107.38mm, high H Z1=12mm.
CN 201120526797 2011-12-16 2011-12-16 Multi-arch variable-channel heat-collecting body element of flat water heater Expired - Fee Related CN202613805U (en)

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Application Number Priority Date Filing Date Title
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Granted publication date: 20121219

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