CN101672598A

CN101672598A - Hollow seal strip for core of heat exchanger

Info

Publication number: CN101672598A
Application number: CN200910186151A
Authority: CN
Inventors: 孙守荣
Original assignee: Ai Keqi Heat Transfer Technology (granary) Co Ltd
Current assignee: Ai Keqi Heat Transfer Technology (granary) Co Ltd
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-03-17
Anticipated expiration: 2029-09-28
Also published as: CN101672598B

Abstract

The invention relates to a hollow seal strip for a core of a heat exchanger. The hollow seal strip and a partition board which is arranged below the seal strip form a fluid channel in an enclosing way. A hole is disposed on the hollow seal strip and runs through the hollow seal strip lengthwise. Because the hollow seal strip is provided with the hole, the flexibility of the hollow seal strip is improved, and the thermal stress impact to the hollow seal strip is reduced. After the hollow seal strip is arranged in the core of the heat exchanger, the flexibility of the core of the heat exchanger,particularly the part where the thermal fluid flows past, can be improved, thus the thermal stress impact to the hollow seal strip can be reduced, and the part of the core of the heat exchanger, where the thermal fluid flows past, can not crack due to the sudden change of temperature.

Description

The fuse of heat exchanger hollow strip of paper used for sealing

Technical field

The present invention relates to a kind of fuse that is used for the heat exchanger of cooling down high-temperature medium.

Background technology

In industrial application, there are many occasions need use the heat exchanger of cooling down high-temperature medium, be exactly the pressurized air that surpasses 200 ℃ will to be cooled off by cold air or water such as the charge air cooler of vehicle motor; Air compressor air themperature after compression also surpasses 250 ℃ sometimes, must cool off with heat exchanger before use; And high-temp liquid also needs cooling sometimes.

The fuse of traditional heat exchanger as shown in Figure 5, on this traditional fuse employed strip of paper used for sealing as shown in Figure 9, strip of paper used for sealing is solid, the cross section roughly be rectangle or the square.Adopt the heat exchanger of this traditional fuse bearing very big thermal stress load and mechanical load in the course of the work, especially only be to flow through off and under the situation of heat exchanger at the cooling medium medium (hot fluid) that is cooled by heat exchanger constantly, zone of heat liberation flows into the zone at hot fluid and is standing frequent temperature jump always, can cause each part of the rigidity heat exchanger core that connects and composes by soldering to expand with heat and contract with cold continually like this, cause cracking on the heat exchanger core, especially more serious in the place that soldering connects, thus the service life of having reduced cooling power and product.

Therefore, how to reduce heat exchanger core thermal stress, increase the service life, having become needs the problem that solves in the industry.

Summary of the invention

The present invention proposes for addressing the above problem, and its purpose just provides a kind of fuse strip of paper used for sealing of heat exchanger, can reduce the influence that thermal stress is impacted fuse.

For achieving the above object, the technical solution used in the present invention provides a kind of fuse hollow strip of paper used for sealing of heat exchanger, and this strip of paper used for sealing surrounds the fluid passage with the dividing plate that is in its upper and lower, has the hole on the strip of paper used for sealing, and strip of paper used for sealing is run through along the length direction of strip of paper used for sealing in this hole.By the mode of perforate on strip of paper used for sealing, increase the flexibility of strip of paper used for sealing, can reduce the impact of thermal stress.

Preferably, Kongzui is opened in the middle part of strip of paper used for sealing well, and this perforate mode helps strengthening ideally the flexibility of strip of paper used for sealing.

Sidepiece in the hole on the strip of paper used for sealing can be offered breach, and this breach is communicated with the hole with the fluid passage, more effectively to strengthen the flexibility of strip of paper used for sealing.

And breach should be positioned at a side adjacent with described fluid passage of strip of paper used for sealing, and like this, breach is directly relative with the fluid passage.

In a kind of embodiment preferred, the hole can be circular port, and breach is a slot.

Further, the center line of breach can intersect with the axial line of circular port.

In another kind of preferred version, the hole can be irregularly-shaped hole.

And that irregularly-shaped hole also can have is a plurality of, and can be interconnected between each hole, also can not be communicated with.

Preferably, preferably offer groove on the outer wall of strip of paper used for sealing, to reach flexibility that strengthens strip of paper used for sealing and the effect that reduces temperature jump.

Because technique scheme utilization, the present invention compared with prior art has following advantage: this strip of paper used for sealing is arranged in the fuse of heat exchanger, can make flexible enhancing of fuse of whole heat exchanger, particularly in zone that hot fluid flows through, the meaning of using this strip of paper used for sealing is more obvious, so just, can reduce the shock effect of thermal stress, avoid causing because of temperature jump the phenomenon that cracks in the zone that hot fluid flows into.

Description of drawings

Accompanying drawing 1 is for using the three-dimensional exploded view of the heat exchanger core of strip of paper used for sealing implemented according to the invention;

Accompanying drawing 2 is the stereogram after the fuse soldering shown in Figure 1;

Accompanying drawing 3 is the front view of structure shown in Figure 2;

Accompanying drawing 4 is the cutaway view of A-A shown in Fig. 3;

Accompanying drawing 5 is the stereogram of traditional heat exchanger core;

Accompanying drawing 6 is the vertical view of structure shown in Figure 3;

Accompanying drawing 7 has shown five kinds of multi-form strip of paper used for sealings for to use the part section enlarged drawing of the heat exchanger core of strip of paper used for sealing implemented according to the invention among the figure;

Accompanying drawing 8 is the cutaway view of M-M shown in Fig. 7;

Accompanying drawing 9 is the amplification front view of traditional solid strip of paper used for sealing;

Accompanying drawing 10-14 has shown the front view of five kinds of multi-form strip of paper used for sealings implemented according to the invention;

Accompanying drawing 15 has shown the temperature changing curve diagram of traditional heat exchanger core;

Accompanying drawing 16 has shown uses the temperature changing curve diagram of the heat exchange fuse of strip of paper used for sealing implemented according to the invention;

Accompanying drawing 17 has shown uses a kind of part-structure enlarged drawing of heat exchanger core of strip of paper used for sealing implemented according to the invention;

Accompanying drawing 18-21 has shown other the four kinds front elevations of strip of paper used for sealing implemented according to the invention;

Wherein: 1, heat exchanger core; 2, dividing plate; 3, cold flow passage strip of paper used for sealing; 4, cold fluid pass; 5, zone of heat liberation; 6, heat passage strip of paper used for sealing; 7, fluid flows into end socket; 9, fluid flows out end socket; 10, cold limit fin; 11, hot limit fin;

20, hole; 24, breach; 40, groove.

The specific embodiment

The following drawing that combination adds according to embodiments of the invention describes, and for the part identical with conventional art, only gives identical reference marks, will omit and describe in detail.

See the structure chart of a kind of heat exchanger core 1 shown in Fig. 1-4 and Fig. 6-8, consistent with conventional art is that cold fluid pass 4 and zone of heat liberation 5 intervals, intersection also are provided with stackedly, are separated by dividing plate 2 between cold fluid pass 4 and zone of heat liberation 5.Shown in Fig. 2-4, about two cold flow passage strip of paper used for sealings 3 of being provided with and two dividing plates 2 that are positioned at its upper and lower form sagittal cold fluid pass 4, before and after two heat passage strip of paper used for sealings 6 of being provided with and two dividing plates 2 of being positioned at its upper and lower form about to zone of heat liberation 5, be respectively arranged with at the two ends, the left and right sides of fuse that fluid flows into end socket 7 and fluid flows out end socket 9.Hot fluid W flows into end socket 7 by fluid and flows into zone of heat liberation 5, in the process of zone of heat liberation 5 of flowing through from left to right, carry out heat exchange with the cold fluid V in the cold fluid pass 4, outflow the end socket 9 is flowed out from the fluid on right side in hot fluid W cooling back, for the use that works on.The above and back can mention " on ", D score, " left side ", " right side ", " preceding ", " back " be relative location definition, with reference to figure 3, above-below direction shown in the paper and left and right directions corresponding to herein " on " and D score and " left side " and " right side ", and perpendicular to the direction of paper by from outside to inside sequential definition " preceding " and " back ".

The cold fluid V that flows through in the cold fluid pass 4 is a cooling medium, and generally constantly by cold fluid pass 4, cold fluid is a cold air usually, can certainly adopt other cooling mediums for it.

Be respectively arranged with fin in cold fluid pass 4 and the zone of heat liberation 5, to improve heat exchange efficiency, these fins are connected respectively with dividing plate 2 by the mode of soldering, as shown in Figure 2, be provided with cold limit fin 10 in the cold fluid pass 4, be provided with hot limit fin 11 in the zone of heat liberation 5.

Heat exchanger core 1 preferred employing aluminium manufacturing can certainly be adopted manufacturings such as copper and copper alloy, steel, stainless steel.

For the heat resistanceheat resistant load that improves heat exchanger core 1 and the ability of mechanical load, the present invention proposes the scheme of hollow strip of paper used for sealing, shown in Figure 10-14 and Figure 17-21, this strip of paper used for sealing is mainly as cold flow passage strip of paper used for sealing 3, have hole 20 on it, this hole 20 can be circular port, also can be irregularly-shaped hole, hole 20 is preferably opened at the middle part of strip of paper used for sealing and is run through strip of paper used for sealing along the length direction of strip of paper used for sealing, and middle part herein refers to the cardinal principle centre position of strip of paper used for sealing at above-below direction, the situation of the circular port shown in Figure 10-14, hole 20 all roughly is in the middle part of strip of paper used for sealing, and in the situation of the irregularly-shaped hole shown in Figure 17-20, it is one or more that hole 20 can have, and porose 20 at the middle part that vertically substantially all is in strip of paper used for sealing.

Also can be on the cold flow passage strip of paper used for sealing 3 in the hole 20 sidepiece offer breach 24, the side adjacent that breach 24 should be in strip of paper used for sealing with cold fluid pass 4, breach 24 is just directly relative with cold fluid pass 4 like this, and successfully with hole 20 and cold fluid pass 4 connections.And for the situation that a plurality of holes 20 are arranged, shown in Figure 17-18, between each hole 20, also can utilize breach 24 to be communicated with, certainly also can not be communicated with between the irregularly-shaped hole, hole 20 as shown in figure 19 itself has the situation of waveform, and this setup also can effectively strengthen the elasticity of strip of paper used for sealing.For the situation of the circular port shown in Figure 10-14, breach 24 can certainly be on the virtual line of the axial line that departs from circular port, as Figure 11 and shown in Figure 13 for the center line of slot breach 24 can intersect with the axial line of circular port.

Among the embodiment shown in Figure 20, breach 24 is a thin-and-long, and hole 20 is substantially oblong-shaped, offers a plurality of grooves 40 on the outer wall of strip of paper used for sealing (mainly being the position of 24 processes of breach), and groove 40 is distributed in upside and downside.

For the embodiment of cold flow passage strip of paper used for sealing 3 shown in Figure 21, on the lateral wall of strip of paper used for sealing, have a plurality of grooves 40, these grooves 40 mainly play the effect that reduces temperature jump, also can strengthen the flexibility of strip of paper used for sealing.Although this structure surface shown in Figure 21 seems not open interstitial hole, also be a kind of strip of paper used for sealing of implementing according to inventive concept, belong to category of the present invention.

The cold flow passage strip of paper used for sealing 3 of said structure mainly is used in the zone that high-temperature hot fluid flows into, that is to say upper and lower in the porch of zone of heat liberation 5, utilize above-described cold flow passage strip of paper used for sealing 3 more satisfactory, this strip of paper used for sealing is by perforate 20 and gap 24 and the mode of offering groove 40, strengthen its flexibility, the heat resistanceheat resistant load of whole high-temperature hot fluid inflow region and the ability of mechanical load have also just been strengthened, when the porch of zone of heat liberation 5 flows into high-temperature hot fluid, because hot fluid flows into the flexible enhancing in zone, so can reduce the shock effect of thermal stress, thereby can avoid the seminess that causes because of temperature jump.

And a side that flows out at hot fluid, strip of paper used for sealing still can adopt traditional mode.

Cold flow passage strip of paper used for sealing 3 shown in Figure 17-21 is for widening strip of paper used for sealing, reach the purpose that reduces temperature jump by modes such as perforate 20 on these strip of paper used for sealings, gap 24, recessings 40, also be desirable embodiment, wherein size, shape, quantity and the position of perforate fluting can be decided as the case may be.

Facts have proved, use the heat exchanger core 1 that above-described various hollow strip of paper used for sealing is produced, can not appear at hot fluid again flows into the zone and causes the phenomenon that cracks because of temperature jump, Figure 15 and Figure 16 show traditional fuse respectively and use the temperature changing curve diagram of the heat exchanger core 1 of cold flow passage strip of paper used for sealing 3 implemented according to the invention, from these two charts as can be seen, particularly utilize shown in Figure 17-21 widen strip of paper used for sealing after, the temperature jump of heat exchanger core 1 is minimized.

Above embodiment only is illustrated strip of paper used for sealing of the present invention at several embodiment shown in the drawings, and in fact, strip of paper used for sealing can have multiple structural form, is applicable to of the present inventionly to be not limited to illustrate and these forms of above explanation indication.

Claims

1, a kind of fuse of heat exchanger hollow strip of paper used for sealing, this strip of paper used for sealing surrounds the fluid passage with the dividing plate that is in its upper and lower, and it is characterized in that: have the hole on the described strip of paper used for sealing, strip of paper used for sealing is run through along the length direction of strip of paper used for sealing in described hole.

2, strip of paper used for sealing according to claim 1, wherein, described hole is opened in the middle part of strip of paper used for sealing.

3, strip of paper used for sealing according to claim 1 and 2, wherein, the sidepiece in the hole on this strip of paper used for sealing also has breach, and this breach is communicated with the hole with the fluid passage.

4, strip of paper used for sealing according to claim 3, wherein, described breach is positioned at a side adjacent with described fluid passage of strip of paper used for sealing.

5, strip of paper used for sealing according to claim 3, wherein, described hole is a circular port, described breach is a slot.

6, strip of paper used for sealing according to claim 5, wherein, the center line of described breach and the axial line of circular port intersect.

7, strip of paper used for sealing according to claim 1 and 2, wherein, described hole is an irregularly-shaped hole.

8, strip of paper used for sealing according to claim 7, wherein, described hole has a plurality of, and is connected between each hole.

9, strip of paper used for sealing according to claim 1 and 2 wherein, offers groove on the outer wall of strip of paper used for sealing.