CN103097847B

CN103097847B - Heat exchanger

Info

Publication number: CN103097847B
Application number: CN201180034210.7A
Authority: CN
Inventors: 谷川茂利
Original assignee: CI Kasei Co Ltd; CKU Inc
Current assignee: CI Kasei Co Ltd; CKU Inc
Priority date: 2010-07-12
Filing date: 2011-07-07
Publication date: 2015-04-15
Anticipated expiration: 2031-07-07
Also published as: TWI470181B; TW201221887A; CN103097847A; KR20130100982A; WO2012008348A1; JP2012021668A; JP5393606B2; US20130112380A1

Abstract

Provided is a heat exchanger for exchanging heat using a multiple tube, wherein heat can be efficiently exchanged. A heat exchanger (1) using a heat transfer tube (4) having outer tubes (42) and inner tubes (41) is configured so that both ends of each inner tube (41) are exposed from each outer tube (42), and header units (21) for circulating a first fluid from the outer peripheries of the exposed portions of the inner tubes (41) through gaps with the outer tubes (42), are provided. The header units (21) are vertically stacked so as to be spaced at predetermined intervals (W) by inserting interval forming members (8) or the like therebetween. Furthermore, the portions of each inner tube, which are exposed from each header unit (21), are covered externally from both sides by a header cover (3b) for circulating a second fluid, so that the second fluid is introduced to the inside of the header cover. Thus, the second fluid is introduced from the header cover (3b) to the inside of each inner tube (41), and is also introduced to the outer surface of each outer tube (42) in the axial direction via the intervals (W), so that heat is exchanged on the inner side and the outer side of each outer tube (42).

Description

Heat exchanger

Technical field

The invention relates to a kind ofly there is the collector (header) of left and right and be arranged at the heat exchanger of the heat-transfer pipe between described collector, more specifically, the invention relates to that a kind of utilization makes fluid improve the heat exchanger of the efficiency of heat exchange along direction of principal axis flowing in the outside of the peripheral direction of heat-transfer pipe.

Background technology

In the past, proposed there is the various heat exchanger employing multiple pipe.Fig. 8 represents the structure of the heat exchanger with common multiple pipe.In Fig. 8, label 83 is coaxitron, and interior pipe 85 is arranged on the inner side of outer tube 84 by this coaxitron with coaxial.About this multiple pipe, such as, have and multiple multiple pipe along axial fin (fin) is set at the peripheral part of interior pipe, arranges at the peripheral part of interior pipe (patent document 1 ~ patent documents 3) such as the multiple pipes of spiral helicine fin.When use this kind of coaxitron to add hot fluid cool, by the fluid that the heats inside by interior pipe 85, and cold fluid is by the gap of outer tube 84 with interior pipe 85, makes the fluid in interior pipe 85 cool thus.

And, about another heat exchanger employing multiple pipe, also there will be a known the heat exchanger (patent document 4) of structure as shown in Figure 9.In Fig. 9, label 210L, 210R are the collector being arranged at left and right, and label 210 is the coaxial heat-transfer pipe arranged between collector 210L, 210R about this.This heat-transfer pipe 210 is made up of pipe in coaxial 211 and outer tube 212, make interior pipe 211 from outer tube 212 extend and the fluid making to become the object of heat exchange from being flowed into by the collector 210L that collector wall 213 separates.On the other hand, be divided plate 214 near the two ends of outer tube 212 and seal, make cold fluid flow into by collector wall 213 and divide in the space that surrounds of plate 214, and flow into since then in the gap area that surrounds between interior pipe 211.

Patent document 1: Japanese Patent Laid-Open 2005-083667 publication

Patent document 2: Japanese Patent Laid-Open 2007-163092 publication

Patent document 3: Japanese Patent Laid-Open 2008-69993 publication

Patent document 4: Japanese Patent Laid-Open 07-133993 publication

Summary of the invention

But, when using this kind of multiple pipe to carry out heat exchange, following problem can be there is.That is, in heat exchanger as shown in Figure 8, Figure 9, making the fluid of the object becoming heat exchange by thin interior pipe, if thus for guaranteeing large flow, then this interior pipe must be made thicker.But, manage if make thicker in this kind, then only can carry out heat exchange at the outer surface of interior pipe, thus the problem of the deterioration of efficiency of heat exchange can occur.

To this, the present invention, in order to solve above-mentioned problem, is using multiple pipe also can carry out heat exchange efficiently when guaranteeing large discharge in the heat exchanger carrying out heat exchange even if its object is to provide a kind of.

Namely, the present invention is in order to solve above-mentioned problem, a kind of heat exchanger is provided, it uses the heat-transfer pipe with outer tube and interior pipe, heat exchange is carried out between the first fluid in gap flowing through outer tube and interior pipe and the second fluid flowing through in interior pipe, be provided with in this heat exchanger: header unit, the two ends of above-mentioned interior pipe are extended from outer tube, and make above-mentioned first fluid be circulated to this peripheral part of interior pipe extended and gap of outer tube; And second collector, second fluid is circulated to manage in this header unit is extended, described heat exchanger is provided with multiple described header unit, make described header unit and header unit stacked in the mode with clearance portion, and make second fluid from above-mentioned second collector by the inside of interior pipe, and also make second fluid from above-mentioned second collector via above-mentioned clearance portion along the outer surface of direction of principal axis by outer tube.

More specifically, be provided with in this heat exchanger: header unit, this header unit keeps near the end of outer tube by the first wall, and at second wall relative with this first wall, pipe in extending from outer tube is kept, in the space surrounded by this first wall and the second wall, make above-mentioned first fluid be circulated to the gap of interior pipe and outer tube; And second collector, second fluid is circulated to manage in the second wall of this header unit extends, described heat exchanger is provided with multiple described header unit, make described header unit and header unit stacked in the mode with clearance portion, and make second fluid by the inside of interior pipe from above-mentioned second collector, and also make second fluid via above-mentioned clearance portion along the outer surface of direction of principal axis by outer tube.

So, because the first fluid of second fluid to the gap flowing through outer tube and interior pipe can be utilized to cool or heat from inner and outer, therefore the efficiency of heat exchange can be improved.

And, in such invention, between stacked header unit and header unit, clamp gap form component and form clearance portion.

So, when changing the size of clearance portion, the thickness forming component by changing gap is dealt with, thus easily can be set as the gap of optimal size.

Or, form convex shaped part or concavity portion with header unit, and utilize between this convex shaped part, concavity portion and form clearance portion.

So, only stacked there is convex shaped part, the header unit in concavity portion just can form clearance portion, thus do not need the gap in assembling procedure to form the bonding etc. of component.

In addition, between the upper strata and the heat-transfer pipe of lower floor of stacked header unit, be provided with the axial branch piece along heat-transfer pipe.

So, the second fluid that flows into through clearance portion can be made via branch piece to the face side branch of heat-transfer pipe, thus second fluid can be made further to flow through the near surface of heat-transfer pipe and improve the efficiency of heat exchange.

And, make the heat transfer pipe contacts of this branch piece and stacked header unit, and make the second fluid flowed into from above-mentioned clearance portion to heat-transfer pipe side branch.

Form if so, then just can form clearance portion by between the heat-transfer pipe that branch piece is held on header unit, and by making this branch piece and heat transfer pipe contacts and can thermal diffusion being carried out.

According to the present invention, a kind of heat exchanger is provided, use the heat-transfer pipe with outer tube and interior pipe, heat exchange is carried out between the first fluid in gap flowing through outer tube and interior pipe and the second fluid flowing through in interior pipe, be provided with in this heat exchanger: header unit, the two ends of above-mentioned interior pipe are extended from outer tube, and makes above-mentioned first fluid be circulated to this peripheral part of interior pipe extended and gap of outer tube, and second collector, second fluid is circulated to manage in this header unit extends, described heat exchanger is provided with multiple described header unit, make described header unit and header unit stacked in the mode with clearance portion, and make second fluid from above-mentioned second collector by the inside of interior pipe, and also make second fluid from above-mentioned second collector via above-mentioned clearance portion along the outer surface of direction of principal axis by outer tube, therefore, it is possible to utilize the first fluid of second fluid to the gap flowing into outer tube and interior pipe cool or heat from inner and outer, thus the efficiency of heat exchange can be improved.

Accompanying drawing explanation

Fig. 1 is the skeleton diagram of the heat exchanger representing one embodiment of the present invention.

Fig. 2 is the A-A sectional skeleton diagram in Fig. 1.

Fig. 3 is the B-B sectional skeleton diagram in Fig. 1.

Fig. 4 is the stereogram of the vicinity of the collector representing the first embodiment.

Fig. 5 is the figure of the convex shaped part of the header unit representing the second embodiment of the present invention.

Fig. 6 is the figure of another convex shaped part of the header unit representing the second embodiment of the present invention.

Fig. 7 is the skeleton diagram of the heat exchanger representing the 3rd embodiment of the present invention.

Fig. 8 is the figure of the heat exchanger of the multiple pipe of use represented in the past.

Fig. 9 is the figure of the heat exchanger of the multiple pipe of use represented in the past.

Detailed description of the invention

< first embodiment >

Below, with reference to accompanying drawing, one embodiment of the present invention is described.Heat exchanger 1 in present embodiment as shown in Figure 1, comprises following each parts and forms: the first collector 2a, in order to make the fluid of the object becoming heat exchange (first fluid) by the gap of interior pipe 41 with outer tube 42; And the second collector 2b, be arranged on this first collector 2a two outside, and in order to make second fluid by the inside of interior pipe 41.And, the feature of heat exchanger 1 of the present invention is: make this first collector 2a to carry out stacked in the mode up and down with clearance portion W of multiple header unit 21, and second fluid is passed through, to carry out cooling or heating from the outside of outer tube 42 and inner side along the direction of principal axis of heat-transfer pipe 4 from this clearance portion W.Below, the formation of the heat exchanger 1 of present embodiment is described in detail.

If be described the structure of the first collector 2a forming this heat exchanger 1, then the header unit 21 kept the heat-transfer pipe 4 with interior pipe 41 and outer tube 42 is carried out stacked and forms by this first collector 2a.This header unit 21 as shown in Figure 4, the unit chorista about 22 of upper and lower a pair is formed relatively, at side i.e. the first wall 23 being used for installing near the end of this outer tube 42, be formed the first recess 28a of the profile of this outer tube 42 segmentation half, and, at second wall (below 26) relative in axial direction with this first wall 23, be also formed the second recess 28b of the profile of interior pipe 41 segmentation half, to hold outer tube 42, interior pipe 41.The divisional plane 20 of these the first wall 23, second walls 26 is split by the face parallel with the axial plane of the heat-transfer pipe 4 be arranged in a row, and makes the open portion of the first recess 28a, the second recess 28b towards this divisional plane 20.And, continuous print side, bottom surface are set from this first wall 23, second wall 26, form opening portion 27 at a side, and first fluid is flowed into from this opening portion 27.When using the unit chorista 22 so formed to form header unit 21, make unit chorista about 22 relative, clamp near the end of outer tube 42 by the first recess 28a, and by the second recess 28b clamp extend since then in pipe 41 end near, thus first fluid is flowed between outer tube 42 and interior pipe 41.When carrying out stacked to the header unit 21 that so hold heat-transfer pipe 4, gap formation component 8 is used to form the clearance portion W of regulation in the vertical direction, and in this case, the header cap 3a of the opening portion 27 covering each header unit 21 is installed, first fluid is flowed into from this inflow entrance 31a.When using this gap formation component 8 to form clearance portion W, the gap preparing the gauge corresponding with the gap width of this clearance portion W forms component 8, and this gap is formed component 8 and be arranged on the upper surface of header unit 21 or lower face side and form gap.

Secondly, the structure of the second collector 2b is described.Second collector 2b makes second fluid flow into from pipe 41 in the second recess 28b extension, in present embodiment, is made up of a header cap 3b of covering first collector 2a, header cap 3a.This header cap 3b in the present embodiment, become the casing structure all covering the first collector 2a of left and right, the heat-transfer pipe 4 of its middle body, flow into make second fluid from inflow entrance 31b, the outlet 32b (with reference to Fig. 1) being arranged at both end sides and discharge.And if make second fluid flow into via the inflow entrance 31b of the second collector 2b so formed, then this second fluid flows into from the end of interior pipe 41, and this second fluid also flows along the peripheral part of outer tube 42 from the clearance portion W of header unit 21.

This kind of heat-transfer pipe 4 makes to be connected to outer tube 42 in two interior pipes 41 and makes respective axial plane consistent, thus, even if when interior pipe 41 expands because of high pressure, also can prevent the expansion of interior pipe 41 by being connected to outer tube 42 in this interior pipe 41.When forming this kind heat-transfer pipe 4, in order to improve the efficiency of heat exchange, such as, the outside dimension of outer tube 42 is set as 0.8mm ~ 2.0mm, be preferably set to 0.9mm ~ 1.5mm, internal diameter size is set as 0.7mm ~ 1.9mm, be preferably set to about 0.8mm ~ 1.4mm.

And, with the upper and lower heat-transfer pipe 4 in header unit 21, branch piece 9 is installed with for the header unit 21 being so arranged in stratiform.This branch piece 9 is arranged in the mode contacted with the peripheral part of heat-transfer pipe 4, and makes the second fluid that flows into via clearance portion W form branch to the outer peripheral portion of heat-transfer pipe 4.That is, if there is not this branch piece 9, then the second flowed into via clearance portion W cognition flows through the clearance space that there is not heat-transfer pipe 4, thus the deterioration of efficiency of heat exchange.To this, branch piece 9 be installed in the clearance space without the need to carrying out this heat exchange and make second fluid close to heat-transfer pipe 4 side, and make the heat diffusion from this heat-transfer pipe 4 and improve the efficiency of heat exchange.When so installing branch piece 9, as shown in Figure 2 and Figure 3, when observing from the direction of principal axis of heat-transfer pipe 4, the position overlapping with clearance portion W is arranged on the state parallel with the header unit 21 forming stratiform.

Secondly, the effect of the situation using the heat exchanger 1 so formed is described.

First, if make first fluid flow into from the inflow entrance 31a of the first collector 2a, then this first fluid flows into via header cap 3a in each header unit 21, and branch and flowing along between outer tube 42 and interior pipe 41 since then.

And, meanwhile, second fluid is flowed into from the inflow entrance 31b of the second collector 2b.So this second fluid flows in interior pipe 41 from the space surrounded by header cap 3b, and flow along the direction of principal axis of this interior pipe 41.And the second fluid not flowing into this interior pipe 41 flows on the direction of principal axis of heat-transfer pipe 4 via the clearance portion W of header unit 21.Further, this second fluid utilizes and is arranged at the branch piece 9 in the gap of heat-transfer pipe 4, and makes this second fluid heat-transfer pipe 4 side branch up and down, and with the contact outside of heat-transfer pipe 4 and first fluid is cooled or heats.

So, according to above-mentioned embodiment, there is the stacked header unit 21 in clearance portion W ground of regulation, also pass through second fluid, therefore, it is possible to carry out heat exchange throughout whole heat-transfer pipe 4 from this clearance portion W along the direction of principal axis of heat-transfer pipe 4.

And, in present embodiment, the branch piece 9 of the surface contact with heat-transfer pipe 4 is arranged along direction of principal axis, therefore make the second fluid flowed into from clearance portion W close to the face side of heat-transfer pipe 4, thus the efficiency of heat exchange can be improved further.

< second embodiment >

Secondly, the second embodiment of the present invention is described.In above-mentioned first embodiment, use gap to form component 8 and form clearance portion W, and in this second embodiment, as shown in Figure 5, Figure 6, at upper surface or the lower surface formation convex shaped part 25a or concavity portion 25b of header unit 21, and second fluid is passed through from this gap.In addition, in present embodiment, the component that addition of the label identical with the first embodiment has the formation identical with the first embodiment.

Form the unit chorista 22 of the header unit 21 in present embodiment, from the downside of bottom surface, in the mode with certain thickness, convex shaped part 25a is erected, between this convex shaped part 25a and convex shaped part 25a, form concavity portion 25b, thus form clearance portion W.Herein, this convex shaped part 25a forms when manufacturing cell's chorista 22.About this convex shaped part 25a, when making header unit 21 stacked on top of one another, as shown in Figure 5, because interfering with the convex shaped part 25a of upper strata and lower floor, therefore when the width of clearance portion W is set as " d ", the height of this convex shaped part 25a is set as " d/2 ", when can interfere at the convex shaped part 25a with upper strata and lower floor thus, gap width is set to " d ".

Or, about this convex shaped part 25a, also as shown in Figure 6, can be made up of the axial thin plate body along heat-transfer pipe 4, make the convex shaped part 25a of upper strata or lower floor overlapping respectively.When so forming, the header unit 21 on upper strata only staggers with the amount being equivalent to this thickness of slab with the opening portion 27 of the header unit 21 of lower floor, but when installing header cap 3a in this opening portion 27, solder material also can be utilized to come this gap of landfill.

So, according to the second embodiment, forming convex shaped part 25a (or concavity portion 25b) with header unit 21, therefore when carrying out stacked to header unit 21, forming component 8 without the need to assemblage gap, thus operation when can simplify lamination process.

In addition, in present embodiment, by forming convex shaped part 25a, and concavity portion 25b is formed in this gap, on the contrary, also can assign to form concavity portion 25b by the bottom surface sections of this unit chorista 22 of pruning, and form convex shaped part 25a between this concavity portion 25b and concavity portion 25b.

< the 3rd embodiment >

Secondly, the 3rd embodiment is described.In above-mentioned first embodiment and the second embodiment, utilize gap to form component 8, convex shaped part 25a etc. and form clearance portion W, but branch piece 9 between the heat-transfer pipe 4 being held on upper strata and lower floor in present embodiment, as shown in Figure 7, can be utilized to form clearance portion W.In addition, in present embodiment, be also that the component that addition of the label identical with the first embodiment has the formation identical with the first embodiment.

The heat exchanger 1 of present embodiment forms the state of component 8 with the gap of not depositing in the diagram and is formed, the branch piece 9 with thickness is installed between the heat-transfer pipe 4 therefore between the header unit 21 of left and right, and this branch piece 9 is contacted with heat-transfer pipe 4, thus clearance portion W can be formed in upper and lower header unit 21.

This branch piece 9 is made up of the metallicity component that thermal conductivity is high, made the heat diffusion of heat-transfer pipe 4 by the surface contact with each heat-transfer pipe 4, and makes the second fluid flowed into from clearance portion W carry out heat exchange towards heat-transfer pipe 4 side branch.

In addition, if this kind of branch piece 9 is made up of metal rigid member, the gap of then upper and lower header unit 21 is decided by the thickness of this branch piece 9, and when the flexure of heat-transfer pipe 4, the thickness of branch piece 9 have error, the gap width of header unit 21 changes.And according to the variation of this gap width, the position of the opening portion 27 of header unit 21 changes, thus be likely difficult to header cap 3a is installed.To this, about this branch piece 9, such as, metal elastic constructs is used, or, also the two sides of only upper strata and lower floor can be made up of metal member and be then made up of the elastomeric material more springy of polyurethane (urethane) etc. about intermediate layer.So, this elasticity can being utilized to absorb the flexure etc. of heat-transfer pipe 4, when installing header cap 3a, can easily carry out the contraposition with opening portion 27.

In addition, the present invention is not limited to the respective embodiments described above, can implement with various form.

Such as, in the respective embodiments described above, form branch piece 9 abreast with the header unit 21 becoming stratiform, make it be held between heat-transfer pipe 4, even if but when there is not this branch piece 9 and also can guaranteeing high rate of heat exchange, this branch piece 9 also can not be installed.

And, in above-mentioned embodiment, two interior pipes 41 are set in the inner side of the outer tube 42 becoming circle, but then can adopt various forms about the shape of this outer tube, the radical of interior pipe.That is, as long as be configured to make first fluid carry out heat exchange from inner and outer, then can be any shape, radical.

[label declaration]

1 heat exchanger

2 collectors (the 2a: the first collector, the 2b: the second collector)

3a, 3b header cap

4 heat-transfer pipes (41: interior pipe, 42: outer tube)

8 gaps form component

9 branch pieces

21 header unit

22 unit choristas

23 first walls

25a convex shaped part

25b concavity portion

26 second walls (below)

Pipe in 41

42 outer tubes

W clearance portion

Claims

1. a heat exchanger, use the heat-transfer pipe with outer tube and interior pipe, heat exchange is carried out between the first fluid in gap flowing through outer tube and interior pipe and the second fluid flowing through in interior pipe, the feature of this heat exchanger is, be provided with: header unit, the two ends of above-mentioned interior pipe are extended from outer tube, and makes above-mentioned first fluid be circulated to this peripheral part of interior pipe extended and gap of outer tube; And second collector, second fluid is circulated to manage in this header unit is extended, described heat exchanger is provided with multiple described header unit, make described header unit and header unit stacked in the mode with clearance portion, and make second fluid from above-mentioned second collector by the inside of interior pipe, and also make second fluid from above-mentioned second collector via above-mentioned clearance portion along the outer surface of direction of principal axis by outer tube.

2. a heat exchanger, use the heat-transfer pipe with outer tube and interior pipe, heat exchange is carried out between the first fluid in gap flowing through outer tube and interior pipe and the second fluid flowing through in interior pipe, the feature of this heat exchanger is, be provided with: header unit, near the end being kept outer tube in this header unit by the first wall, and at second wall relative with this first wall, pipe in extending from outer tube is kept, in the space surrounded by this first wall and the second wall, make above-mentioned first fluid be circulated to the gap of interior pipe and outer tube; And second collector, second fluid is circulated to manage in the second wall of this header unit extends, described heat exchanger is provided with multiple described header unit, make described header unit and header unit stacked in the mode with clearance portion, and make second fluid by the inside of interior pipe from above-mentioned second collector, and also make second fluid via above-mentioned clearance portion along the outer surface of direction of principal axis by outer tube.

3. heat exchanger as claimed in claim 1 or 2, wherein, above-mentioned clearance portion between stacked header unit and header unit, clamps gap form component and formed.

4. heat exchanger as claimed in claim 1 or 2, wherein, above-mentioned clearance portion utilizes the convex shaped part or concavity portion that form with header unit and formed.

5. heat exchanger as claimed in claim 1 or 2, wherein, between above-mentioned header unit and the heat-transfer pipe of header unit, is provided with the second fluid that makes to flow into from the above-mentioned clearance portion branch piece to heat-transfer pipe side branch.

6. heat exchanger as claimed in claim 1 or 2, wherein, between the heat-transfer pipe in above-mentioned header unit and header unit, to be provided with this heat transfer pipe contacts and in order to make the second fluid that flows into from above-mentioned clearance portion to the branch piece of heat-transfer pipe side branch.