CN102767979A - Plate type heat exchanger - Google Patents
Plate type heat exchanger Download PDFInfo
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- CN102767979A CN102767979A CN201210289506XA CN201210289506A CN102767979A CN 102767979 A CN102767979 A CN 102767979A CN 201210289506X A CN201210289506X A CN 201210289506XA CN 201210289506 A CN201210289506 A CN 201210289506A CN 102767979 A CN102767979 A CN 102767979A
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Abstract
The invention provides a plate type heat exchanger. The plate type heat exchanger comprises at least three folded plate sheets for form at least two flowing channels, wherein at least one layer of reinforcing sheets is arranged in at least one flow channel. The reinforcing pieces are plate sheets, perforated plate sheets or screens. The plate type heat exchanger can improve flow area and actual heat exchange area of convection heat exchange coefficient on the small side, surface heat exchange coefficient by adding the reinforcing piece in a targeted mode on a basis that the turbulence strength of the plate type heat exchanger is kept to be constant and is even improved, accordingly improves total heat exchange coefficient, enables the efficiency to be improved during liquid-liquid heat exchange, air-liquid heat exchange and air-air heat exchange, especially during the air-liquid heat exchange, and widens the application range.
Description
Technical field
The present invention relates to a kind of heat exchanger, relate more specifically to a kind of plate type heat exchanger.
Background technology
Plate type heat exchanger is a kind of new and effective, the compact heat exchanger that obtains in recent decades developing rapidly with extensive use, is to be formed by a series of plate closed assemblies with certain bellows-shaped, and is as shown in Figure 1.Fig. 1 has provided a cross sectional shape of common herringbone wave's card runner; Form between first plate 1 and second plate 2 between first flow 4, the second plates 2 and the 3rd plate 3 and form second runner 5, be i.e. two runners 4 of plate 1,2,3 formation of closed assembly so that cold fluid and hot fluid is separated; 5; Cold fluid and hot fluid is flowed in the runner 4,5 of plate 2 both sides respectively, carry out exchange heat through plate 2.Because runner is a runner that shape of cross section is changeable, tortuous between its plate, it makes the fluid turbulization effectively, and heat convection is strengthened, thereby has reduced the thermal resistance of fluid.The thin plate manufacturing of plate 2 usefulness 0.5 ~ 1.5mm has reduced the wall thermal resistance; Turbulent because of flow regime simultaneously for highly, make dirt as thin as a wafer, its corresponding thermal resistance is also little.Plate type heat exchanger has a series of advantage: 1. overall heat-transfer coefficient is high; Its overall heat-transfer coefficient is about 3～5 times of shell and tube exchanger.2. in light weight, volume is little, compact conformation; Heat exchange area in its unit volume is about 3～5 times of shell-tube type, and floor space is merely 1/5～1/6 of shell-tube type.3. be easy to realize pure adverse current, and terminal temperature difference can be very little, can realize little different transfer of heat.4. maximization and miniaturization are all very convenient.5. easy to manufacture, selection is various etc.
But plate type heat exchanger also has some intrinsic shortcomings, because the mean gap of runner is 2～8mm between plate; For the heat transferring medium that contains larger particles or fiber, the runner easy blocking has occurred forming various asymmetric runners with special plate for this reason; Fig. 2 has provided the sketch map of asymmetric runner; Wherein, this plate type heat exchanger is depicted as the plate 1` that has certain bellows-shaped by three, 2` equally; The 3` closed assembly forms, and the cross-sectional area of the second runner 5` of plate 2` both sides can reach about 2 times with the ratio of the cross-sectional area of first flow 4`; Analyze the structure of various asymmetric runners, they all are only applicable to the situation that wide runner is a high-pressure fluid; To when the pressure difference at cold fluid and hot fluid two ends is big (when particularly the pressure of narrow runner is big), can not bring into play the superiority of plate type heat exchanger.Because of existing on one side phase transformation or specific heat capacity bigger, under the condition of economic velocity, the temperature rise gap that causes cold fluid and hot fluid near or when surpassing 1 one magnitude (temperature rise like water and air can be arrived 2 one magnitude).It is such through increasing fin that plate type heat exchanger is difficult to the image tube shell heat exchanger in addition, and the change heat transfer area also promptly, makes the heat transfer area of both sides unequal.This also is air cooled condenser and an evaporimeter and do not have one of reason of fine use plate type heat exchanger in a large amount of various air coolers that use of each industrial trade and the vapor compression refrigeration device.
Summary of the invention
Solution when using plate type heat exchanger to carry out heat exchange when the object of the present invention is to provide a kind of thermal capacity that can be applied to cold fluid and hot fluid to differ big.
(like a large amount of air coolers that use of air cooling power plant are phase-change heat-exchanges of water vapour and air when differing big for the thermal capacity of cold fluid and hot fluid; Wherein water vapour is the fluid that is condensed; Air is a cooling fluid) heat exchanger; Technical scheme of the present invention is: a kind of plate type heat exchanger, the plate that comprises at least three closed assemblies are provided with one deck reinforcement sheet at least to form at least two runners at least one runner.
Said reinforcement sheet is plate form, perforated plate form or screen cloth form.
Said reinforcement sheet contacts with said plate.
Said reinforcement sheet is straight perforated plate or screen cloth.
Said reinforcement sheet is herringbone wave's card, vertical corrugated plating or the straight corrugated plating of level.
The shape of said reinforcement sheet or basically identical or fully different identical with the shape of plate.
Adjacent said plate does not contact.
Said reinforcement sheet does not contact with said plate.
Said plate type heat exchanger is full welded type, half welded type or detachable plate type heat exchanger
The form of the reinforcement sheet of heat exchanger of the present invention can be various common plate and the special plate that uses at present.The material of strengthening sheet can be metal or other any suitable materials.Pore quantity on the reinforcement sheet, position and big I are according to operating position, processing and other conditional decisions.The monnolithic case of strengthening sheet can be straight, or with adjacent plate basically identical or identical or different fully.The number of plies of strengthening sheet can be one or more layers.Strengthen between the sheet, strengthen between sheet and the adjacent plate close contact can be arranged, or do not have close contact.
Pass through technique scheme; Plate type heat exchanger provided by the present invention is under identical conditions of work such as heat; Install additional and strengthen circulation area and the actual heat exchange area that sheet can improve little that side of convection transfer rate (like air side) targetedly; Improve surface film thermal conductance; Thereby improve total coefficient of heat transfer of plate type heat exchanger, the efficient of plate type heat exchanger when liquid-liquid, solution-air, gas-gas heat exchange (particularly solution-air heat exchange) is improved, widened the range of application of plate type heat exchanger.On the other hand; Strengthen the actual internal area that sheet can increase this side (like air side) runner through increasing at less that side of thermal capacity (like air side) runner; Significantly improved the total flow of thermal capacity smaller side (like air side); Also promptly improved the thermal capacity of this side, avoided because the significantly rising of the too high power that causes of thermal capacity smaller side (like air side) flow velocity.Further, having the phase transformation side to install additional to strengthen sheet and can when increasing effective heat exchange area, significantly reducing plate condensation or evaporated liquid film thickness, further improve heat exchange efficiency.
Description of drawings
Fig. 1 is the runner sketch map of common plate type heat exchanger;
Fig. 2 is the runner sketch map of asymmetric plate type heat exchanger or unequal section plate type heat exchanger;
Fig. 3 is the runner sketch map that in a runner of heat exchanger, installs straight screen cloth additional of constructing according to a preferred embodiment of the present invention;
Fig. 4 be construct according to a preferred embodiment of the present invention in runner of heat exchanger, install the straight perforated plate of one deck additional, install the two-layer straight perforated plate and the runner sketch map of one deck and identical another perforated plate 64 of plate 1 shape in another runner additional;
Fig. 5 is the runner sketch map of the straight perforated plate of two-layer perforated plate and the one deck with adjacent plate shape basically identical of in runner of heat exchanger, installing additional of constructing according to a preferred embodiment of the present invention;
Fig. 6 be construct according to a preferred embodiment of the present invention in runner of heat exchanger, install four layers of perforated plate and straight perforated plate of one deck with adjacent plate shape basically identical additional;
Fig. 7 is the runner sketch map that only in runner of heat exchanger, installs one deck and the identical perforated plate 64` of first plate, 1 shape additional of constructing according to a preferred embodiment of the present invention;
Fig. 8 similarly schemes with Fig. 7, wherein perforated plate 64a and the adjacent discontiguous runner sketch map of plate;
Fig. 9 be only in runner of heat exchanger, installing additional of constructing according to a preferred embodiment of the present invention two-layer with the runner sketch map identical perforated plate of plate shape; When the shape of all plates was identical, then the ratio of the circulation area of two runners was 1:3.
The specific embodiment
Below in conjunction with accompanying drawing, provide preferred embodiment of the present invention, and describe in detail, enable to understand better function, the characteristics of plate type heat exchanger of the present invention.
In this article, screen cloth refers to the web-shaped product with penetrability that punching by braiding wiry, plate etc. is made.
In this article, perforated plate refers to the plate that plate is provided with at least one perforation.Wherein, the shape of plate can be adjusted according to practical application, and the shape of perforation, quantity, position and size all can be adjusted according to operating position, processing conditions and other conditions.
In this article, the way of contact between the adjacent plate comprises two kinds: if the reinforcement sheet is not set between the adjacent plate, then plate and plate can have direct physics contact point, and then adjacent plate realizes directly contact; If be provided with the reinforcement sheet between the adjacent plate, and this reinforcement sheet and this adjacent plate all have direct physics contact point, and then adjacent plate is strengthened sheet through this and realized mediate contact.
In following examples, plate type heat exchanger can be full welded type, half welded type or detachable, because this full welded type, half welded type or detachable plate type heat exchanger are those skilled in the art's known technology, repeats no more at this.
In following examples; Plate type heat exchanger comprises at least three plates (after this being called as first plate 1, second plate 2, the 3rd plate 3) of closed assembly; Form at least two runners (after this being called as first flow 4, second runner 5), be provided with at least one at least one said runner and strengthen sheet.When this reinforcement sheet is the plate form, be called as the 4th plate, the 5th plate When this reinforcement sheet is the perforated plate form, be called as first perforated plate, second perforated plate When this reinforcement sheet is the screen cloth form, be called as first screen cloth, second screen cloth ...
Can know with reference to accompanying drawing 3 that specifically the plate type heat exchanger of structure is a kind of high-performance heat exchanger that is formed by a series of plate closed assemblies with certain bellows-shaped according to a preferred embodiment of the present invention.Its three plates only are shown, i.e. first plate, 1, the second plate 2 and the 3rd plate 3 in Fig. 3.Form first flow 4 between first plate 1 and second plate 2; Form second runner 5 between second plate 2 and the 3rd plate 3 so that cold fluid and hot fluid is separated; This cold fluid and hot fluid is flowed in the runner 4,5 of second plate, 2 both sides respectively, carry out exchange heat through second plate 2.
In second runner 5, be provided with a straight screen cloth 6 and form the reinforcement sheet.
In the present embodiment, second plate 2 has close contact 7 with straight screen cloth 6, the 3rd plate 3 with straight screen cloth 6.
Increase through the turbulent extent in these straight screen cloth 6, the second runners 5, thereby improve the coefficient of heat transfer.And the effect of the similar fin of these screen cloth 6 main performances, increase heat exchange area, further improve total heat exchange efficiency.
Those skilled in the art will appreciate that the screen cloth in the present embodiment can replace with perforated plate.
Can know with reference to accompanying drawing 4 that specifically the plate type heat exchanger of structure is a kind of high-performance heat exchanger that is formed by a series of plate closed assemblies with certain bellows-shaped according to a preferred embodiment of the present invention.Its three plates only are shown, i.e. first plate, 1, the second plate 2 and the 3rd plate 3 in Fig. 4.Form first flow 4 between first plate 1 and second plate 2; Form second runner 5 between second plate 2 and the 3rd plate 3 so that cold fluid and hot fluid is separated; It is flowed in the runner 4,5 of second plate, 2 both sides respectively, carry out the exchange heat of cold fluid and hot fluid through second plate 2 or the 3rd plate 3.
Comprise as first perforated plate 61 of strengthening sheet, second perforated plate 62, the 3rd perforated plate 63 and the 4th plate 64 according to the plate type heat exchanger of present embodiment structure.
In first flow 4, be provided with straight first perforated plate 61.In the present embodiment, first plate 1 and second plate 2 have first close contact 71, and this first perforated plate 61 passes said first close contact 71 successively.
In second runner 5, be provided with second, third straight perforated plate 62,63, between this second perforated plate 62 and the 3rd perforated plate 63, be provided with the 4th plate 64.
In the present embodiment; It is identical with first plate 1 that the shape of the 4th plate 64 is depicted as; The 4th plate 64 in second runner 5 with second plate 2, the 3rd plate 3 closed assemblies, make the 4th plate 64 and second plate 2 have second close contact, 72, the four plates 65 and the 3rd plate 3 has the 3rd close contact 73; This second perforated plate 62 passes said second close contact, 72, the three perforated plates 63 successively and passes said the 3rd close contact 73 successively.
In the present embodiment; The 4th plate 64 can not have perforated design; This second runner 5 is divided into upper flow passage 51 and lower flow passage 52; Wherein, the fluid in the upper flow passage 51 carries out the exchange heat of cold fluid and hot fluid through second plate 2, and the fluid in the lower flow passage 52 carries out the exchange heat of cold fluid and hot fluid through the 3rd plate 3.Certainly, the 4th plate 64 also can be perforated plate or screen cloth.
Effect through the similar fin of first perforated plate, 61 main performances increases heat exchange area, improves the coefficient of heat transfer of this side.Effect through second perforated plate 62, the 3rd perforated plate 63 and the similar fin of the 4th plate 64 performances therebetween increases heat exchange area, improves the coefficient of heat transfer of this side; Further, the installing of this second perforated plate 62, the 3rd perforated plate 63 and the 4th plate 64 therebetween makes the distance between second plate 2 and the 3rd plate 3 increase, thereby significantly improves the valid circulation area of second runner 5.
Those skilled in the art will appreciate that the perforated plate in the present embodiment can replace with screen cloth.
Can know with reference to accompanying drawing 5 that specifically the plate type heat exchanger of structure is a kind of high-performance heat exchanger that is formed by a series of plate closed assemblies with certain bellows-shaped according to a preferred embodiment of the present invention.Its three plates only are shown, i.e. first plate, 1, the second plate 2 and the 3rd plate 3 in Fig. 4.Form first flow 4 between first plate 1 and second plate 2; Form second runner 5 between second plate 2 and the 3rd plate 3 so that cold fluid and hot fluid is separated; It is flowed in the runner 4,5 of second plate, 2 both sides respectively, carry out the exchange heat of cold fluid and hot fluid through second plate 2.
Plate type heat exchanger according to the present embodiment structure comprises as the first, second, third perforated plate 61`, 62`, the 63` that strengthen sheet.
In second runner 5, be provided with first, second, third perforated plate 61`, 62`, 63` successively.Wherein, this second perforated plate 62` is depicted as straight perforated plate; And the shape basically identical of the shape of the first perforated plate 61`, 63` and adjacent second plate 2, so-called basically identical is meant that the bellows-shaped, spacing of perforated plate etc. is identical with second, third plate 2,3, only the ripple height is different.Promptly the wave height of the waveform that had of the first, the 3rd perforated plate 61`, 63` is lower than waveform that second plate 2, the 3rd plate 3 the had wave height in the relevant position respectively.In the present embodiment, second plate 2 and the 3rd plate 3 have close contact 7`, and first, second, third perforated plate 61`, 62`, 63` all pass said close contact 7` and be provided with.
Through first, second, third perforated plate 61`, 62`, 63`, mainly bring into play the effect of similar fin, increase heat exchange area, to improve this side coefficient of heat transfer.
Those skilled in the art will appreciate that the perforated plate in the present embodiment can replace with screen cloth.
Can know with reference to accompanying drawing 6 that specifically the plate type heat exchanger and the embodiment 3 of structure are similar according to this preferred embodiment of the invention, its difference only is the number of perforated plate.In the present embodiment, the number of perforated plate is depicted as 5.
Can know with reference to accompanying drawing 7 that specifically the plate type heat exchanger and the embodiment 2 of structure are similar according to a preferred embodiment of the present invention, its difference only is to omit straight perforated plate wherein, only keeps as the 4th plate 64` that strengthens sheet.
In the present embodiment; Can not have perforated design on the 4th plate 64`; This second runner 5 is divided into upper flow passage 51` and lower flow passage 52`; Wherein, the fluid among the upper flow passage 51` carries out the exchange heat of cold fluid and hot fluid through second plate 2, and the fluid among the lower flow passage 52` carries out the exchange heat of cold fluid and hot fluid through the 3rd plate 3.
In the present embodiment, can have perforated design on the 4th plate 64`, the fluid in second runner 5 carries out the exchange heat of cold fluid and hot fluid through second plate 2.
Specifically can know with reference to accompanying drawing 8; The plate type heat exchanger and the embodiment 5 of structure are similar according to a preferred embodiment of the present invention; Wherein, The 4th plate 64a can be not form close contacts with second plate 2, the 3rd plate 3, thereby the circulation area of runner 5 is arbitrarily increased, with the flow of suitable increase runner 5 inner fluids.This moment, flow-disturbing plate 64a only worked to strengthen turbulent flow.Should be appreciated that the shape of the 4th plate of this moment can or basically identical or fully different identical with the shape of adjacent panel.
Can know with reference to accompanying drawing 9 that specifically the plate type heat exchanger of structure is a kind of high-performance heat exchanger that is formed by a series of plate closed assemblies with certain bellows-shaped according to a preferred embodiment of the present invention.Its three plates only are shown, i.e. first plate, 1, the second plate 2 and the 3rd plate 3 in Fig. 4.Form first flow 4 between first plate 1 and second plate 2; Form second runner 5 between second plate 2 and the 3rd plate 3 so that cold fluid and hot fluid is separated; It is flowed in the runner 4,5 of second plate, 2 both sides respectively, carry out the exchange heat of cold fluid and hot fluid through second plate 2.
Plate type heat exchanger according to the present embodiment structure comprises as first, second perforated plate 61``, the 62`` that strengthen sheet.
In second runner 5, be provided with first, second perforated plate 61``, 62`` successively.Wherein, First, second perforated plate 61``, 62`` in second runner 5 with second plate 2, the 3rd plate 3 closed assemblies; Make win perforated plate 61`` and second plate 2 have the first close contact 71``; The first perforated plate 61`` and the second perforated plate 62`` have the first close contact 72``, and the second perforated plate 62`` and the 3rd plate 3 have the 3rd close contact 73``.When the shape of first, second perforated plate 61``, 62`` and first plate 1, when second plate 2 is identical, the ratio of the circulation area of the first flow 4 and second runner 5 is 1:3.
Embodiment 8
In the concrete application of embodiment 6; Be depicted as the embodiment of certain marine generator air cooling device; Cooling water side is identical with common plate type heat exchanger; The air that is cooled has installed two-layer and the identical perforated plate 61`` of plate 1,2,3 shapes, 62`` additional, and adopting the effective heat transfer area of monolithic is 0.18m
2The herringbone corrugated cardboard sheet, its ripple height is 4.5mm.The runner pattern is cross-flow.Be about 6m with total heat conduction area (cooling water side)
2This kind plate type heat exchanger replace heat exchange area 60m
2The fin-tube type air cooler of copper pipe copper fin.Slightly be superior in the heat exchange effect under the condition of fin-tube type air cooler of copper pipe copper fin, volume and weight all is merely fin-tube type air cooler half the of copper pipe copper fin, and this has huge superiority for mobile unit.
Above-described, be merely preferred embodiment of the present invention, be not in order to limiting scope of the present invention, the above embodiment of the present invention can also be made various variations.Be that every simple, equivalence of doing according to the claims and the description of application of the present invention changes and modification, all fall into the claim protection domain of patent of the present invention.The present invention not detailed description be the routine techniques content.
Claims (9)
1. plate type heat exchanger, the plate that comprises at least three closed assemblies is characterized in that to form two runners at least, is provided with at least one deck at least one runner and strengthens sheet.
2. plate type heat exchanger as claimed in claim 1 is characterized in that, said reinforcement sheet is plate form, perforated plate form or screen cloth form.
3. plate type heat exchanger as claimed in claim 1 is characterized in that, said reinforcement sheet contacts with said plate.
4. plate type heat exchanger as claimed in claim 1 is characterized in that, said reinforcement sheet is straight perforated plate or screen cloth.
5. plate type heat exchanger as claimed in claim 1 is characterized in that, said reinforcement sheet is herringbone wave's card, vertical corrugated plating or the straight corrugated plating of level.
6. plate type heat exchanger as claimed in claim 1 is characterized in that, the shape of said reinforcement sheet or basically identical or fully different identical with the shape of plate.
7. plate type heat exchanger as claimed in claim 1 is characterized in that, adjacent said plate does not contact.
8. plate type heat exchanger as claimed in claim 1 is characterized in that, said reinforcement sheet does not contact with said plate.
9. plate type heat exchanger as claimed in claim 1 is characterized in that, said plate type heat exchanger is full welded type, half welded type or detachable plate type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289506XA CN102767979A (en) | 2012-08-14 | 2012-08-14 | Plate type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289506XA CN102767979A (en) | 2012-08-14 | 2012-08-14 | Plate type heat exchanger |
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| CN102767979A true CN102767979A (en) | 2012-11-07 |
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| CN201210289506XA Pending CN102767979A (en) | 2012-08-14 | 2012-08-14 | Plate type heat exchanger |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196318A (en) * | 2013-04-17 | 2013-07-10 | 山东华昱压力容器有限公司 | Plate-type heat exchanger plate |
| CN107314699A (en) * | 2017-06-20 | 2017-11-03 | 上海交通大学 | A kind of high-performance heat exchanger fin and its heat exchanger for heat exchanger |
| CN108999705A (en) * | 2018-07-09 | 2018-12-14 | 武汉英康汇通电气有限公司 | Regenerator core and regenerator including regenerator core |
| CN112984874A (en) * | 2021-04-20 | 2021-06-18 | 埃能科技(广州)有限公司 | Evaporative condenser, manufacturing method thereof and air conditioning unit |
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| CN202734627U (en) * | 2012-08-14 | 2013-02-13 | 覃新川 | Plate-type heat exchanger |
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| US4966132A (en) * | 1988-12-01 | 1990-10-30 | Northgate Research, Inc. | Remote spark shock wave generator |
| CN101680726A (en) * | 2007-05-31 | 2010-03-24 | 三菱电机株式会社 | Heat exchanger element, process for manufacturing the same, and heat exchange ventilation apparatus |
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| CN107314699B (en) * | 2017-06-20 | 2020-02-07 | 上海交通大学 | High-performance heat exchange fin for heat exchanger and heat exchanger with high-performance heat exchange fin |
| CN108999705A (en) * | 2018-07-09 | 2018-12-14 | 武汉英康汇通电气有限公司 | Regenerator core and regenerator including regenerator core |
| CN112984874A (en) * | 2021-04-20 | 2021-06-18 | 埃能科技(广州)有限公司 | Evaporative condenser, manufacturing method thereof and air conditioning unit |
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Application publication date: 20121107 |