CN203323601U

CN203323601U - Heat transfer tube and heat exchanger adopting same

Info

Publication number: CN203323601U
Application number: CN201320161228XU
Authority: CN
Inventors: 滝波重明; 谷川茂利
Original assignee: CI Kasei Co Ltd; CKU Inc
Current assignee: CI Kasei Co Ltd; CKU Inc; Asahi Chemical Industry Co Ltd
Priority date: 2012-04-05
Filing date: 2013-04-02
Publication date: 2013-12-04
Anticipated expiration: 2023-04-02
Also published as: JPWO2013150818A1; CN103363820A; KR20150006823A; US20150300746A1; WO2013150818A1; TW201346206A

Abstract

The utility model provides a heat transfer tube and a heat exchanger adopting the same. The heat transfer tube comprises a plurality of parallel outer tubes (13), a plurality of parallel inner tubes (15), clearance supporting members (17) and supporting members (19), wherein the inner tubes (15) are inserted into the outer tubes (13) and two ends of each inner tube (15) stretch out of each outer tube (13); the clearance supporting members (17) are configured in the clearances of the inner circumferential surfaces of the outer tubes (13) and the outer circumferential surfaces of the inner tubes (15) and comprise wire rods distributed on the whole outer tubes (13) and spirally contacted with the inner circumferential surfaces and the outer circumferential surfaces; the supporting members (19) comprise wire rods distributed on the whole inner tubes (15) and spirally contacted with the inner circumferential surfaces of the inner tubes (15); the area ration of a preliminary flow path in each inner tube (15) and a secondary flow path in each outer tube is 1-1 to 1- 1.6. The heat transfer tube provided by the utility model can assemble the outer tubes and the inner tubes in the heat exchanger with high precision, and low heat transfer efficiency is not caused.

Description

Heat-transfer pipe and use the heat exchanger of this heat-transfer pipe

Technical field

The utility model relates to a kind of heat-transfer pipe and uses the heat exchanger of this heat-transfer pipe.

Background technology

As multi tube heat exchanger, following double pipe (double pipe) formula heat exchanger is arranged, it is inserted inner tube to pass in outer tube, and carries out heat exchange between the fluid circulated between the fluid circulated in inner tube and inner tube and outer tube.This heat exchanger has been applicable to use heat pump (heat pump) the formula water heater of refrigerant or heating equipment etc., the refrigerant of circulation HTHP in inner tube, and the water circulated between inner tube and outer tube is heated and supplying hot water.

In this Double-pipe type heat-exchanger, in order to obtain the supplying hot water ability of regulation, and the double pipe that increases heat transfer area and be made as strip forms.Therefore, in order being embedded in equipment, must to carry out bending process or be coiled to form the outer shape of shape for regulation, thus the close mode difficulty.In addition, follow the long size of total length, the pressure loss of fluid (refrigerant, water) also can increase, thereby must use the body of Large Diameter Pipeline, thereby can't use with respect to the high pressure refrigerant and the small diameter tube of resistance to pressure excellence.For described problem, be made as following formation in following patent documentation 1,, the double pipe that the outer tube interpolation is being led to inner tube configures many abreast side by side, in the end of this double pipe, inboard collector (header pipe) is engaged and makes outer tube to be communicated with, and the inner tube that will connect inboard collector is with outside collector joint and it is communicated with, thereby makes the pressure loss of fluid reduce significantly and can use small diameter tube, can closely make, and easily be embedded in equipment.

The prior art document

Patent documentation

Patent documentation 1: Japanese Patent Laid-Open 2005-127684 communique

The utility model content

Yet, described existing Double-pipe type heat-exchanger is used inner tube and the outer tube little pipe of diameter in order to realize close mode, but must be configured to make fluid positively the gap portion by outer tube and inner tube to be conducted heat, precision prescribed for the making of the bonding part of these outer tubes and inner tube and collector.In general, to utilize welding to carry out the joint of described body, scolder can the heating when engaging overflow and flow, thereby can see the scolder flowed out to outside, but because be double pipe structure, so in the situation that the pipe internal flow can't see, grade can hinder stream if immerse the clearance portion of inner tube and outer tube, namely the stream sectional area is unfixing, thereby sometimes can't obtain sufficient heat transfer efficiency.

In addition, the center of the inner tube of the Double-pipe type heat-exchanger of patent documentation 1 is straight line ground and forms space, though the resistance of heating agent stream is little, with inner tube, contact and mobile heating agent amount is many, thereby existence can't be carried out the problem of heat exchange effectively.

The utility model completes in view of described situation, the heat exchanger that its purpose is to provide a kind of heat-transfer pipe and uses this heat-transfer pipe, described heat-transfer pipe is being assembled outer tube and inner tube in heat exchanger closely accurately, the reduction of heat transfer efficiency can be do not caused, and the heat exchanger effectiveness of heating agent mobile in inner tube and this inner tube can be improved.

Then, with reference to the accompanying drawing corresponding with embodiment, the means in order to solve described problem are described.

The described heat-transfer pipe 11 of the technical solution of the utility model 1 is characterised in that and comprises:

Outer tube 13;

Inner tube 15, be inserted into described outer tube 13;

Gap supporting member 17, be configured in gap length (the gap width the is long) W of the outer peripheral face of the inner peripheral surface of described outer tube 13 and described inner tube 15, and comprise the total length that spreads all over described outer tube 13 and wire rod that the outer peripheral face of the inner peripheral surface of helically and described outer tube 13 and described inner tube 15 contacts; And

Supporting member 19, comprise the total length that spreads all over this inner tube 15 and the wire rod that helically contacts with the inner peripheral surface of described inner tube 15.

This heat-transfer pipe 11 becomes the structure that supporting member 19 is supported the inner tube 15 as a stream from inboard, and inner tube 15 is supported by gap supporting member 17 with outer tube 13, this gap supporting member 17 makes the secondary stream as the tubulose gap of section ring-type spread all over circumferentially (circumferential direction) and become equal gap to position, configuration precision when thereby outer tube 13 is assembled with inner tube 15 each other improves, and realizes the simplification of number of assembling steps.In addition, can not depart from outer tube 13 and the allocation position of inner tube 15, the stream sectional area is fixed, thereby heat transfer efficiency can not reduce.

The described heat-transfer pipe 11 of technical scheme 2 is characterised in that: in the described heat-transfer pipe 11 of technical scheme 1, described gap supporting member 17 comprises coiled material, and wire diameter d1 is made as with described gap length (the gap width is long) W and equates.

In this heat-transfer pipe 11, can utilize the gap supporting member 17 that comprises coiled material, fixedly be assembled and easily the gap of outer tube 13 and inner tube 15 is remained, and guarantee stream with the gap of fixing.In addition, also in order to conduct heat, insert gap supporting member 17, thereby heat transfer area is set greatly.

The described heat-transfer pipe 11 of technical scheme 3 is characterised in that: in the described heat-transfer pipe 11 of technical scheme 1, described gap supporting member 45 comprises the coiled material that minor diameter part 43 and large-diameter portion 41 alternately form, wire diameter d1 is less than described gap length (the gap width is long) W, the volume inside diameter D 1 of described minor diameter part 43 is made as the D outer diameter 5 of described inner tube 15, the volume D outer diameter 2 of described large-diameter portion 41 is made as the inside diameter D 4 of described outer tube 13, and described inner tube 15 is supported in described outer tube 13.

In this heat-

transfer pipe

11,43 pairs of inner tubes 15 of the minor diameter part of gap supporting member 45 are supported, large-diameter portion 41 is supported by the inner peripheral surface of outer tube 13, gap length (the gap width is long) W at the inner peripheral surface of the outer peripheral face of inner tube 15 and outer tube 13 inserts wire diameter d1 and the space 47 of gap supporting member 45, thereby can guarantee fully flow path area.

The described heat-transfer pipe 11 of technical scheme 4 is characterised in that and comprises:

Outer tube 13;

Inner tube 15, be inserted into described outer tube 13;

Gap supporting member 17, be configured in the gap 31 of outer tube inner peripheral surface 32 and inner tube outer peripheral face 30, and comprise the total length that spreads all over described outer tube 13 and the wire rod that helically contacts with described outer tube inner peripheral surface 32 and described inner tube outer peripheral face 30;

Supporting member 19, comprise the total length that spreads all over described inner tube 15 and the wire rod that helically contacts with described inner tube inner peripheral surface 38; And

Heat transfer member 20, the total length that spreads all over described supporting member 19 is arranged on described supporting member 19De center, and at least the part of periphery contacts with described supporting member 19.

In this heat-transfer pipe 11, in inner tube 15, mobile heating agent contacts with the heat transfer member 20 of the inboard that is arranged at inner tube 15 and contacts with supporting member 19 on one side on one side and flows, thus the heating agent in inner tube 15 is applied to flow resistance, and form as wriggle as flow, in the past, for the state that only in inner tube 15, flows as the crow flies and inner tube 15 is carried out to heat exchange with the heating agent of inner tube inner peripheral surface 38 adjacency, the contact area of heating agent increases thus.Heating agent is by being contacted with heat transfer member 20, and contacted with this heat transfer member 20, supporting member 19 and inner tube inner peripheral surface 38, and these heat transfer members 20, supporting member 19, inner tube 15 are transmitted heat, thereby carried out heat exchange.Heat through heat exchange conducts and is passed to inner tube outer peripheral face 30 by heat, with the heating agent of interior mobile another system in the gap 31 in outer tube 13 and inner tube 15, carries out heat exchange.Namely, contribute to again to improve heat exchanger effectiveness with the heat of heat transfer member 20 exchanges.

The described heat-transfer pipe 11 of the technical solution of the utility model 5 is characterised in that: it is the described heat-transfer pipe 11 of technical scheme 4, and described heat transfer member 20 for being band plate 141 long and that helically reverses on the length direction of described supporting member 19.

In this heat-transfer pipe 11, band plate 141 contacts helically setting on one side on one side with supporting member 19, at the interior mobile heating agent of inner tube 15, in inner tube 15, advances on spiral rotating one side on one side.Thus, than heating agent and axis mobile situation abreast, can increase contact area and time of contact that heating agent contacts with heat transfer member 20.

The described heat-transfer pipe 11 of the technical solution of the utility model 6 is characterised in that: it is the described heat-transfer pipe 11 of technical scheme 4, described heat transfer member 20 protrudes round bar 153 for peripheral part, and this peripheral part protrudes round bar 153 and have oval 155 that is out of shape every predetermined distance extruding circular circumference on the length direction of described supporting member 19.

In this heat-transfer pipe 11, the round bar raw material are extruded in the mode from the clamping of axis orthogonal direction, and the part be extruded is thus protruded to the radial direction outside, thereby becomes oval 155.This protrusion front of oval 155 contacts with supporting member 19.By this direction of extrusion is for example alternately changed on every 90 degree ground, and can to the stream of heating agent, be stirred and be made it to wriggle.

The described heat-transfer pipe 11 of the technical solution of the utility model 7 is characterised in that: it is the described heat-transfer pipe 11 of technical scheme 4, described heat transfer member 20 is reducing round bar 161, and this reducing round bar 161 is every predetermined distance, circular circumference alternately to be formed by minor diameter part 159 and large-diameter portion 157 on the length direction of described supporting member 19.

In this heat-transfer pipe 11, by reducing round bar 161 is inserted into to inner tube 15, the heating agent mobile along reducing round bar 161 flows on one side with large-diameter portion 157 collisions on one side.Upset flowing of heating agent by this collision, the heating agent directly passed through under the state do not contacted with inner tube inner peripheral surface 38 or heat transfer member 20 is reduced.

The described heat-transfer pipe 11 of the technical solution of the utility model 8 is characterised in that: it is the described heat-transfer pipe 11 of technical scheme 4, and described heat transfer member 20 is polygon-shaped solid hopkinson bar 165 for section.

In this heat-transfer pipe 11, than mainly only showing the band plate 141 that the back side contacts with heating agent, by section, be for example the heat transfer member 20 of triangle, and can make with the contact position of heating agent, be a plurality of positions.If especially section shape be made as to star etc. can not reduce stream, and further enlarge active surface.

The described heat exchanger 49 of the technical solution of the utility model 9 is characterised in that: used technical scheme 1 to arbitrary described heat-transfer pipe 11 in technical scheme 8,

Described heat-transfer pipe 11 be parallel to each other and configuring a plurality of,

All inner tube arrival ends are connected in to a branched pipe 21 and all inner tube ports of export are connected in to a concetrated pipe 27 and form stream one time, and

All outer tube arrival ends are connected in to secondary branched pipe 25 and all outer tube ports of export are connected in to secondary concetrated pipe 29 and formation secondary stream.

In this heat exchanger 49, by a plurality of heat-transfer pipes 11, formed in parallel to each other, arranging adjacently on same plane, and configuring outer tube 13 and inner tube 15.In addition, the heat exchanger 49 formed can be made as to 1 unit on this plane, and lamination multistage and forming, heat transfer area and the little heat exchanger of contact area enlarged thereby can form.

In addition, in the heat exchanger 49 that comprises heat transfer member 20, heating agent mobile in inner tube 15 contacts with the heat transfer member 20 of the inboard that is arranged on inner tube 15 on one side and flows on one side, and the contact area of the heating agent only contacted with inner tube inner peripheral surface 38 in the past increases.Heating agent utilizes the heat transmission to carry out heat exchange with heat transfer member 20 by contacting with heat transfer member 20.Be passed to inner tube 15 through the conduction of the Btu utilization of heat exchange heat, and carry out heat exchange with the heating agent of interior mobile another system in the gap 31 in outer tube 13 and inner tube 15.Namely, contribute to again to improve heat exchanger effectiveness with the heat of heat transfer member 20 exchanges.In addition, in this heat exchanger 49, formed in parallel to each other by a plurality of heat-transfer pipes 11 that comprise outer tube 13 and inner tube 15, and arranging adjacently at grade.The heat exchanger 49 formed on this plane can be made as a unit, and lamination multistage and forming, thereby can when enlarging heat transfer area, reduce contact area and form.

The described heat exchanger 65 of technical scheme 10 is characterised in that: used technical scheme 1 to arbitrary described heat-transfer pipe 11 in technical scheme 8,

Many described heat-transfer pipes 11 are given to bunchy, the bundle of this heat-transfer pipe 11 is housed in the housing 67 of drum, the arrival end of described inner tube 15 is reached to the port of export each other to be connected separately from each other and forms stream one time, and the arrival end of described outer tube 13 is reached to the port of export each other and connect separately from each other and form the secondary stream, and form as three streams described housing 67 is interior.

In this heat exchanger 65, a plurality of heat-transfer pipes 11 of bunchy utilize each outer tube 13 to carry out heat exchange with inner tube 15 in cylindrical shell 67, and also can with carry out heat exchange at the interior mobile heating agent of housing 67.

The described heat exchanger 65 of technical scheme 11 is characterised in that: in the described heat exchanger 65 of technical scheme 10, a plurality of cowling panels 87 are being set described housing 67 is interior, described cowling panel 87 has the face with the length direction quadrature of described heat-transfer pipe 11, and each described heat-transfer pipe 11 is supported and described three streams are wriggled.

In this heat exchanger 65, the interior mobile heating agent of housing 67 utilizes cowling panel 87 and wriggles, make three streams form longly on one side, with respect to each heat-transfer pipes 11 in housing 67, with length direction, roughly on the direction of quadrature, flowing on one side, and heating agent utilizes the outer tube 13 of each heat-transfer pipe 11 increase heat transfer areas and carry out heat exchange.

According to the described heat-transfer pipe of the technical solution of the utility model 1, inner tube and outer tube are supported by the gap supporting member, this gap supporting member spreads all over the secondary stream as the tubulose gap of section ring-type circumferentially to become equal gap to position, thereby configuration precision when outer tube and inner tube assembling each other improves, and realizes the simplification of number of assembling steps.In addition, by having gap supporting member and supporting member, and the position of inner tube and outer tube can not be offset, and when being welded to each other etc., scolder can not depart from or overflow, thereby can distinguish fixed position.In addition, gap supporting member and supporting member become the structure that supports inner tubal wall and outer tube wall, can make thus the wall thickness slimming of these inner tubes and outer tube, thereby thermal conductivity can further improve, and also can further realize the close mode of heat exchanger.In addition, can not depart from the allocation position of outer tube and inner tube and coaxial heart positions, the stream sectional area is fixed and heat transfer efficiency can not reduce.In addition, so flow swimmingly because stream forms the fluid of helical form in managing on tube axial direction, and conduct heat to whole tube wall equably, and gap supporting member and supporting member become thermal conductor, thereby can improve heat transfer efficiency.

According to the described heat-transfer pipe of technical scheme 2, by the gap supporting member that comprises coiled material, formed, can easily the gap of outer tube and inner tube be remained fixedly and be assembled thus, namely, mutually inserting, when chimeric, the gap supporting member becomes guiding element (guide), the installation that the easness that can be assembled and precision are high, and can guarantee stream with the gap of fixing.

According to the described heat-transfer pipe of technical scheme 3, the minor diameter part of gap supporting member is supported inner tube, large-diameter portion is supported by the inner peripheral surface of outer tube, gap portion at the inner peripheral surface of the outer peripheral face of inner tube and outer tube inserts wire diameter and the space of gap supporting member, thereby can guarantee fully flow path area.

In addition, according to the described heat-transfer pipe of the technical solution of the utility model 4, inner tube and outer tube are supported by the gap supporting member, this gap supporting member spreads all over the secondary stream as the tubulose gap of section ring-type circumferentially to become equal gap to position, thereby configuration precision when outer tube and inner tube assembling each other improves, and realizes the simplification of number of assembling steps.In addition, by having gap supporting member and supporting member, and the position of inner tube and outer tube can not be offset, and when being welded to each other etc., scolder can not depart from or overflow, thereby can distinguish fixed position.In addition, gap supporting member and supporting member become the structure that supports inner tubal wall and outer tube wall, thus can be by the wall thickness slimming of these inner tubes and outer tube, thus thermal conductivity can further improve, and also can further realize the close mode of heat exchanger.In addition, heat transfer member is supporting supporting member, can make supporting member and inner tube connect airtight.In addition, can not depart from the allocation position of outer tube and inner tube and coaxial heart positions, the stream sectional area is fixed and heat transfer efficiency can not reduce.In addition, utilize gap supporting member and supporting member and make stream form helical form, and utilize heat transfer member to be flowed in the mode of wriggling, thereby the fluid in the pipe of tube axial direction is contacted fully and is flowed, thereby can conduct heat equably to whole tube wall, and gap supporting member, supporting member, heat transfer member are respectively thermal conductor, thereby can improve heat transfer efficiency.

According to the described heat-transfer pipe of technical scheme 5, because be cheap material, so can relatively not increase flow losses, utilize the band plate reversed in the shape of a spiral and make the heating agent spiral rotating in inner tube, can improve thus the rate of heat exchange of heating agent mobile in inner tube and this inner tube.

According to the described heat-transfer pipe of technical scheme 6, the protrusion front of the oval section of protruding towards the radial direction outside is contacted with supporting member, this oval can be stirred the stream of heating agent and it is wriggled, and can improve thus the rate of heat exchange of heating agent mobile in inner tube.

According to the described heat-transfer pipe of technical scheme 7, utilize the large-diameter portion of reducing round bar and minor diameter part to be stirred heating agent mobile in inner tube, and can easily contact with inner tube and heat transfer member, thereby rate of heat exchange improves.

According to the described heat-transfer pipe of technical scheme 8, can increase the surface area of heat transfer member, and can improve the rate of heat exchange of heating agent and heat transfer member and supporting member.

According to the described heat exchanger of the technical solution of the utility model 9, a plurality of heat-transfer pipes that length is fixing are arranged at grade, can the heat transfer area that enlarge primary fluid and secondary heating agent in area be set limited, thereby can obtain the joint space-efficient heat exchanger that temperature efficiency is high.In addition, heat exchanger that can this is plane forms as unit lamination multistage, improves the heat exchanger effectiveness of heating agent mobile in inner tube and this inner tube, thereby can form with the little high efficiency heat exchanger that area closely forms that arranges.

According to the described heat exchanger of technical scheme 10, can utilize gap supporting member or supporting member and form accurately the mutual allocation position of inner tube and outer tube, even if bunchy and forming respectively, stream and secondary stream also can be even, a plurality of heat-transfer pipes become bundle and form and be configured in cylindrical shell, thereby can in inner tube, outer tube, housing, by 3 kinds of heating agents, positively carry out heat exchange.

According to the described heat exchanger of technical scheme 11, can utilize to be arranged on the cowling panel in housing and heating agent mobile in housing is wriggled, thereby can increase the heat transfer area with respect to heat-transfer pipe.

The accompanying drawing explanation

Fig. 1 (a) means the signal amplification profile of heat-transfer pipe of the present utility model, and Fig. 1 (b) means the figure of the A-A profile of Fig. 1 (a).

Fig. 2 (a) means the plane of the heat-transfer pipe column unit that comprises heat-transfer pipe of the present utility model, and Fig. 2 (b) means the figure of the B-B line profile of this plane.

Fig. 3 is the C-C sectional side view of the heat-transfer pipe column unit shown in Fig. 2 (a).

Fig. 4 is the local amplification profile of the profile shown in Fig. 2 (b).

Fig. 5 is the profile of the heat-transfer pipe of another embodiment.

Fig. 6 (a) is the signal amplification profile of heat-transfer pipe of the present utility model, and Fig. 6 (b) is the A-A profile of Fig. 6 (a).

Fig. 7 (a) is the plane of the heat-transfer pipe column unit that comprises heat-transfer pipe of the present utility model, and Fig. 7 (b) is the profile with the face of a branched pipe quadrature and the axis that comprises inner tube.

Fig. 8 is the outer tube observed of the interior side from the secondary branched pipe and the front elevation of inner tube.

Fig. 9 is the major part enlarged drawing of Fig. 7 (b).

Figure 10 (a) comprises band plate being turned round to the profile of the heat-transfer pipe of the heat transfer member that turn 90 degrees and be shaped every specific length, and Figure 10 (b) is the B-B profile of Figure 10 (a), and Figure 10 (c) is the C-C profile of Figure 10 (a).

Figure 11 is the stereogram of Figure 10 (a) to the heat transfer member shown in Figure 10 (c).

Figure 12 be make the external diameter of round bar be deformed into ellipse and every specific length change 90 degree towards peripheral part protrude the stereogram of round bar.

Figure 13 (a) comprises that the peripheral part of Figure 12 protrudes the profile of the heat-transfer pipe of round bar, and Figure 13 (b) is the D-D profile of Figure 13 (a), and Figure 13 (c) is the E-E profile of Figure 13 (a), and Figure 13 (d) is the F-F profile of Figure 13 (a).

Figure 14 (a) is the profile of the heat-transfer pipe of the reducing round bar that comprises that large-diameter portion and minor diameter part alternately form, and Figure 14 (b) is the G-G profile of Figure 14 (a), and Figure 14 (c) is the H-H profile of Figure 14 (a).

Figure 15 (a) is the profile of the heat-transfer pipe of the round bar with contraction flow region that comprises that large-diameter portion and minor diameter part are formed by mild face, and Figure 15 (b) is the I-I profile of Figure 15 (a), and Figure 15 (c) is the J-J profile of Figure 15 (a).

Figure 16 (a) comprises that section is the profile of the heat-transfer pipe of polygon-shaped solid hopkinson bar, and Figure 16 (b) is the K-K profile of Figure 16 (a).

Figure 17 comprises the profile that in each described shape example of round bar type, end is formed to the heat-transfer pipe of fairshaped heat transfer member.

Figure 18 is used heat-transfer pipe of the present utility model and the stereogram of the heat exchanger that forms.

Figure 19 is used heat-transfer pipe of the present utility model and the signal exploded perspective view of the heat exchanger of another embodiment of forming.

Figure 20 is the sectional side view of the heat exchanger shown in Figure 19.

Reference numeral:

11: heat-transfer pipe

13: outer tube

15: inner tube

17,45: the gap supporting member

19: supporting member

20: heat transfer member

21: branched pipes

23: embolism

25: the secondary branched pipe

27: concetrated pipes

29: the secondary concetrated pipe

30: the inner tube outer peripheral face

31: gap

32: the outer tube inner peripheral surface

33: the outer tube patchhole

35: the inner tube through hole

37: the inner tube patchhole

38: the inner tube inner peripheral surface

39: the heat-transfer pipe column unit

41,157: large-diameter portion

43,159: minor diameter part

47: space

49,65: heat exchanger

51: inlet headers

53: outlet headers

55: the secondary inlet header

57: the secondary outlet header

59: the screw-in pipe joint

61: base plate

67: housing

69: dividing walls

71: inner tube supported hole (supported hole)

73: the secondary isolation wall

75: outer tube supported hole (secondary supported hole)

77: end wall

79: branching portions

81: set section once

83: the secondary branching portion

85: secondary set section

87: cowling panel

89: by section

91: inlet headers

93: the secondary outlet header

95: three inlet headers

97: outlet headers

99: the secondary inlet header

101: three outlet headers

141: band plate

151: otch

153: peripheral part protrudes round bar

155: oval section

161: the reducing round bar

163: round bar

165: solid hopkinson bar

D1, d2: wire diameter

D1: volume internal diameter

D2, D3: volume external diameter

D4, D6, D7: internal diameter

D5: external diameter

S1: the area of a stream

S2: the area of secondary stream

W: gap length (the gap width is long)

The specific embodiment

At first, with reference to accompanying drawing, the first embodiment of the present utility model is described.

Fig. 1 (a) means the signal amplification profile of heat-transfer pipe of the present utility model, Fig. 1 (b) means the figure of the A-A profile of Fig. 1 (a), Fig. 2 (a) means the plane of the heat-transfer pipe column unit of the heat exchanger that comprises heat-transfer pipe of the present utility model, Fig. 2 (b) means the figure of the B-B line profile of this plane, Fig. 3 is the C-C sectional side view of the heat-transfer pipe column unit shown in Fig. 2 (a), and Fig. 4 is the local amplification profile of the profile shown in Fig. 2 (b).

The heat-transfer pipe 11 of present embodiment comprises outer tube 13, inner tube 15, gap supporting member 17, reaches supporting member 19.

Outer tube 13 comprises straight tubule, and inner tube 15 is inserted into outer tube 13, and derive from the two ends of this outer tube 13 at two ends.In addition, inner tube 15 is made as the concentric state with outer tube 13.

This heat-transfer pipe 11 forms by many, and is arranged in parallel and the ground that adjoins each other is arranged side by side in the mode that becomes the same plane shape, thereby becomes that rectangular-shaped pipe arrangement is listed as and as the heat-transfer pipe column unit of heat exchanger.

An end that is connecting 21, branched pipes 21 of a branched pipe on the arrival end of all inner tubes 15 of configuration side by side utilizes embolism 23 and closure.Connecting secondary branched pipe 25 on the arrival end of all outer tubes 13, an end of secondary branched pipe 25 utilizes embolism 23 and closure, and described inner tube 15 connects.The other end that is connecting 27, concetrated pipes 27 of a concetrated pipe on the port of export of all inner tubes 15 utilizes embolism 23 and closure.Connecting secondary concetrated pipe 29 on the port of export of all outer tubes 13, the other end of secondary concetrated pipe 29 utilizes embolism 23 and closure, and inner tube 15 connects.In present embodiment, branched pipe 21, concetrated pipe 27, secondary branched pipe 25, and secondary concetrated pipe 29 comprise straight pipe.

There is the gap 31 as stream between inner tube 15 outer peripheral faces and outer tube 13 inner peripheral surfaces, at this gap portion, insert gap supporting member 17.The coiled material that gap supporting member 17 is served as reasons and formed with gap length (gap width long) W wire diameter d1 about equally, wherein said gap length (the gap width is long) W is the gap length of the outer peripheral face of the inner peripheral surface of outer tube 13 and inner tube 15.Namely, the volume inside diameter D 1 of the gap supporting member 17 that comprises coiled material is made as the D outer diameter 5(D1=D5 of inner tube 15), volume D outer diameter 2 is made as the inside diameter D 4(D2=D4 of outer tube 13), helically contacts with the inner peripheral surface of outer tube 13 and the outer peripheral face of inner tube 15, and across the gap length with wire diameter d1 equal length (gap width long) W(d1=W=D4-D5) configure outer tube 13 and inner tube 15, thus the roughly total length that can spread all over outer tube 13 supports inner tube 15 and outer tube 13.

In addition, the supporting member 19 contacted with inner circumferential surface is being set in inner tube 15.Supporting member 19 comprises the coiled material be made as with gap supporting member 17 wire diameter d2 about equally, and is made as the volume D outer diameter 3 equated with the inside diameter D 6 of inner tube 15, and with helically, with the inner peripheral surface of inner tube 15, contacts and the mode that supports from interior side arranges.

As shown in Figure 4, outer tube 13 inserts in outer tube patchholes 33 and, at the interior side opening of secondary concetrated pipe 29, described outer tube patchhole 33 is located on a tube wall of secondary concetrated pipe 29.Wearing inner tube through hole 35 on another tube wall of secondary concetrated pipe 29, inserting that the inner tube 15 pass to inner tube through hole 35 is utilized the inner tube patchhole 37 that is located in a branched pipe 21 and at the interior side opening of a branched pipe 21.

The pipe of each described breakthrough part utilizes each other welding and fixes airtightly.Welding can adopt so-called method of placing scolder, and the method is to place scolder on the contact-making surface of managing each other, for example places spelter solder or strong solder, and is engaged integratedly by welding in stove.In addition, with regard to the gap supporting member 17 and supporting member 19 that support inner tube 15 and outer tube 13, also, in stove, utilize scolder and contacted with inner tube 15 outer peripheral faces and inner tube 15 inner peripheral surfaces with respect to outer tube 13 inner peripheral surfaces, thereby they are bonded with each other together respectively.These gap supporting members 17, supporting member 19 are used is the member that the coiled material that comprises stainless steel and wire diameter are 0.5mm～2mm, this coiled material is the coiled material as the member of the wire-shaped be shaped with helical form, and such as the alloy of having implemented copper facing, nickel plating, the described copper of plating and nickel or the multilayer plating of copper and nickel etc.In addition, as described, in stove, each coiled material (gap supporting member 17, supporting member 19) is contacted with inner tube 15 outer peripheral faces and inner tube 15 inner peripheral surfaces with respect to outer tube 13 inner peripheral surfaces, and using the plating raw material as scolder, thereby they are bonded together respectively.In addition, the coiled material of stainless steel can be also the coiled material with spring of having implemented in advance Quenching Treatment, the raw material that can be perhaps also untreated coiled material, namely make straight wire-shaped are deformed into helical form and the coiled material that is shaped, are preferably the untreated coiled material that can form at an easy rate.In addition, because outer tube 13 being put into as described together with inner tube 15 to stove, carry out heat treated, so preferably use the coiled material of the state before Quenching Treatment.

In addition, gap supporting member 17 and supporting member 19 are being put into before stove, only spot welding is carried out in the end of inner tube 15 and outer tube 13 and temporary fixed, then assembling is respectively managed and is put into to stove, and gap supporting member 17, supporting member 19 and inner tube 15 and outer tube 13 and outer tube 13, inner tube 15, branched pipe 21, secondary branched pipe 25, concetrated pipe 27, a secondary concetrated pipe 29 are bonded together respectively thus.

As shown in Figure 3, outer tube 13, at the inside opening of secondary branched pipe 25, inner tube 15 in the internal configurations of each outer tube 13.The inner tube 15 derived from outer tube 13 in secondary branched pipe 25 is connecting secondary branched pipe 25, at the inside of a concetrated pipe 27 difference opening.Secondary branched pipe 25 and the secondary concetrated pipe 29 at the two ends that insert the many outer tubes 13 leading to inner tube 15, are connected in outer tube 13 and a branched pipe 21 and a concetrated pipe 27 that is connected in the two ends of inner tube 15, become the heat-transfer pipe column unit 39 shown in Fig. 2 (a) of quadrangle shape at grade.

In present embodiment, in heat-transfer pipe 11, inner tube 15 is used superfine metal-made pipe with outer tube 13, and the ratio S1:S2 of the area S2 of the secondary stream in the area S1 of a stream in inner tube 15 and outer tube 13 is made as 1:2～2:1.Use following pipe: the internal diameter of inner tube 15 is made as 2mm～6mm, preferably is made as 3mm～5mm, and the internal diameter of outer tube 13 is made as 4mm～10mm, preferably is made as 5mm～8.5mm, and thickness is made as 0.15mm～0.35mm.

Herein, for example, what inner tube 15 was used is stainless steel (SUS) pipe of D outer diameter 5=4mm, inside diameter D 6=3.6mm, what outer tube 13 used is the SUS pipe of external diameter 6.6mm, inside diameter D 4=6mm, and the coiled material of copper-plated stainless steel that made enforcement that gap supporting member 17 and supporting member 19 is wire diameter d1=d2=1mm, if according to these numerical value and obtain the area of stream and secondary stream according to the section (Fig. 1 (b)) of the heat-transfer pipe 11 shown in Fig. 1 (a) and Fig. 1 (b), the area S1 of a stream is about 9.17mm ², the area S2 of secondary stream is about 14.70mm ², the area S1 of a stream is about 1:1.6 with the ratio of the area S2 of secondary stream.

In addition, suitably change the numerical value separately of each diameter dimension of described inner tube 15 and outer tube 13 and gap supporting member 17, supporting member 19, the area S1 of a stream and the ratio of the area S2 of secondary stream preferably are made as the ratio of 1:1, and in the gap supporting member 17 that comprises coiled material and supporting member 19, sectional area changes according to volume number or spacing with respect to outer tube 13, inner tube 15, thereby variable their shape, and by by inner tube 15 and the ratio of the flow velocity in outer tube 13 be made as the raising that 1:1 realizes thermal conductivity.

In addition, in described embodiment, about the shape of gap supporting member 17, meaned to comprise volume inside diameter D 1 and rolled up the example that D outer diameter 2 is made as fixing coiled material, but be not limited thereto, for example as shown in Figure 5, also can be the coiled material that large-diameter portion 41 and minor diameter part 43 alternately form.Be made as following formation in this gap supporting member 45: set to such an extent that be less than gap length (the gap width the is long) W of inner tube 15 and outer tube 13 by wire diameter d1, the volume inside diameter D 1 of minor diameter part 43 is made as the D outer diameter 5 of inner tube 15, the volume D outer diameter 2 of large-diameter portion 41 is made as the inside diameter D 4 of outer tube 13, and in outer tube 13 inner support inner tubes 15.According to this heat-transfer pipe 11, because gap length (the gap width the is long) W of the inner peripheral surface of the outer peripheral face in inner tube 15 and outer tube 13 inserts wire diameter d1 and the space of gap supporting member 17, so can guarantee fully flow path area.

Then, with reference to accompanying drawing, the second embodiment of the present utility model is described.

Fig. 6 (a) is the signal amplification profile of heat-transfer pipe of the present utility model, Fig. 6 (b) is the A-A profile of Fig. 6 (a), Fig. 7 (a) is the plane of the heat-transfer pipe column unit that comprises heat-transfer pipe of the present utility model, Fig. 7 (b) is the profile with the face of a branched pipe quadrature and the axis that comprises inner tube, Fig. 8 is the outer tube observed of the interior side from the secondary branched pipe and the front elevation of inner tube, and Fig. 9 is the major part enlarged drawing of Fig. 7 (b).

The heat-transfer pipe 11 of present embodiment comprises outer tube 13, inner tube 15, gap supporting member 17, supporting member 19, reaches heat transfer member 20.

This heat-transfer pipe 11 forms by many, and is arranged in parallel and the ground that adjoins each other is arranged side by side in the mode that becomes the same plane shape, thereby becomes the heat-transfer pipe column unit 39 that rectangular-shaped pipe arrangement is listed as.

An end that is connecting 21, branched pipes 21 of a branched pipe on the arrival end of all inner tubes 15 of configuration side by side utilizes embolism 23 and closure.Connecting secondary branched pipe 25 on the arrival end of all outer tubes 13, an end of secondary branched pipe 25 utilizes embolism 23 and closure, and described inner tube 15 connects.The other end that is connecting 27, concetrated pipes 27 of a concetrated pipe on the port of export of all inner tubes 15 utilizes embolism 23 and closure.Connecting secondary concetrated pipe 29 on the port of export of all outer tubes 13, the other end of secondary concetrated pipe 29 utilizes embolism 23 and closure, and inner tube 15 connects.In present embodiment, branched pipe 21, concetrated pipe 27, secondary branched pipe 25 and a secondary concetrated pipe 29 comprise straight pipe.

As shown in Figure 6 (a), there is the gap 31 that becomes stream between inner tube outer peripheral face 30 and outer tube inner peripheral surface 32, at this gap portion, insert gap supporting member 17.The coiled material that gap supporting member 17 is served as reasons and formed with gap length (gap width long) W wire diameter d1 about equally, wherein said gap length (the gap width is long) is the gap length of the outer peripheral face of the inner peripheral surface of outer tube 13 and inner tube 15.Namely, the volume inside diameter D 1 of the gap supporting member 17 that comprises coiled material is made as the D outer diameter 5(D1=D5 of inner tube 15), volume D outer diameter 2 is made as the inside diameter D 4(D2=D4 of outer tube 13), helically contacts with the inner peripheral surface of outer tube 13 and the outer peripheral face of inner tube 15, and across the gap length with wire diameter d1 equal length (gap width long) W(d1=W=(D4-D5)/2) configure outer tube 13 and inner tube 15, thus the roughly total length that can spread all over outer tube 13 supports inner tube 15 and outer tube 13.

At supporting member 19De center, heat transfer member 20 is being set.Heat transfer member 20 spreads all over the total length of supporting member 19 and arranges, and at least the part of periphery contacts with supporting member 19.In present embodiment, this heat transfer member 20 for being band plate 141 long and that helically reverses on the length direction of supporting member 19.The width length of band plate 141 and the inside diameter D 7 of supporting member 19 are about equally.

Outer tube 13 insert a tube wall that is located in secondary branched pipe 25, secondary concetrated pipe 29 outer tube patchhole 33 and at the interior side opening of secondary branched pipe 25, secondary concetrated pipe 29.Another tube wall at secondary branched pipe 25, secondary concetrated pipe 29 is wearing inner tube through hole 35, inserts that the inner tube 15 pass to inner tube through hole 35 is utilized the inner tube patchhole 37 that is located in branched pipe 21, a concetrated pipe 27 and at the interior side opening of branched pipe 21, a concetrated pipe 27.

The pipe of each described breakthrough part utilizes each other welding and fixes airtightly.Welding can adopt so-called method of placing scolder, and the method is to place scolder on the contact-making surface of managing each other, for example places spelter solder or strong solder, and is engaged integratedly by welding in stove.In addition, with regard to the gap supporting member 17, supporting member 19 and the heat transfer member 20 that support inner tube 15 and outer tube 13, also, in stove, utilize scolder to be contacted with inner tube outer peripheral face 30 and inner tube inner peripheral surface 38 with respect to outer tube inner peripheral surface 32, and they are bonded with each other together respectively.These gap supporting members 17 or supporting member 19 used is the member that the coiled material that comprises stainless steel and wire diameter are 0.5mm～2mm, this coiled material is the coiled material as the member of the wire-shaped of helical form shaping, and such as the alloy of having implemented copper facing, nickel plating, the described copper of plating and nickel or the multilayer plating of copper and nickel etc.In addition, as described, in stove, gap supporting member 17 and supporting member 19 with respect to outer tube inner peripheral surface 32 and inner tube outer peripheral face 30 and inner tube inner peripheral surface 38(with reference to Fig. 6 (a)), heat transfer member 20 contacted, and using the plating raw material as scolder, thereby they are bonded together respectively.In addition, the coiled material of stainless steel can be also the coiled material with spring of having implemented in advance Quenching Treatment, the raw material that can be perhaps also untreated coiled material, namely make straight wire-shaped are deformed into helical form and the coiled material that is shaped, are preferably the untreated coiled material that can form at an easy rate.In addition, because outer tube 13 being put into as described together with inner tube 15 to stove, carry out heat treated, so preferably use the coiled material of the state before Quenching Treatment.

In addition, before gap supporting member 17, supporting member 19, heat transfer member 20 are put into stove, only spot welding is carried out in the end of inner tube 15 and outer tube 13 and temporary fixed, then assemble inner tube 15 and outer tube 13 and can put into to stove.Thus, inner tube 15 and supporting member 19, supporting member 19 and heat transfer member 20, inner tube 15 and gap supporting member 17 and outer tube 13, branched pipe 21 and inner tube 15, a concetrated pipe 27 engage respectively with outer tube 13 with outer tube 13, secondary concetrated pipe 29 with inner tube 15, secondary branched pipe 25.

As shown in Figure 8, outer tube 13, at the inside opening of secondary branched pipe 25, inner tube 15 in the internal configurations of each outer tube 13.The inner tube 15 derived from outer tube 13 in secondary branched pipe 25 is connecting secondary branched pipe 25, at the inside of a concetrated pipe 27 difference opening.Secondary branched pipe 25 and the secondary concetrated pipe 29 at the two ends that insert the many outer tubes 13 leading to inner tube 15, are connected in outer tube 13 and a branched pipe 21 and a concetrated pipe 27 that is connected in the two ends of inner tube 15, become the heat-transfer pipe column unit 39 shown in Fig. 7 (a) of quadrangle shape at grade.

In present embodiment, in heat-transfer pipe 11, inner tube 15 is used superfine metal-made pipe with outer tube 13.The area S1 of a stream of inner tube 15 is (sectional area of the sectional area-band plate of the internal diameter sectional area-supporting member of inner tube 15).In addition, the area S2 of the secondary stream of outer tube 13 is (sectional area of the external diameter sectional area of the internal diameter sectional area-inner tube of outer tube 13-gap supporting member).The area S1 of a stream is made as S1:S2=1:2～2:1 with the ratio of the area S2 of secondary stream.Use following pipe: the internal diameter of inner tube 15 is made as 2mm～6mm, preferably is made as 3mm～5mm, and the internal diameter of outer tube 13 is made as 4mm～10mm, preferably is made as 5mm～8.5mm, and thickness is made as 0.15mm～0.35mm.

Herein, for example, inner tube 15 is used D outer diameter 5=4mm, the SUS pipe of inside diameter D 6=3.6mm, outer tube 13 uses external diameter 6.6mm, the SUS pipe of inside diameter D 4=6mm, and gap supporting member 17 and supporting member 19 are made as wire diameter d1=d2=1mm enforcement the coiled material of copper-plated stainless steel, band plate 141 is made as the long 1.6mm of width, thickness 0.21mm, if according to these numerical value and obtain the area of the area S2 of the area S1 of a stream and secondary stream according to the section (Fig. 6 (b)) of the heat-transfer pipe 11 shown in Fig. 6 (a) and Fig. 6 (b), the area S1 of a stream is about 8.5mm ², the area S2 of secondary stream is about 14.0mm ², the area S1 of a stream is about 1:1.65 with the ratio of the area S2 of secondary stream.

In addition, suitably change the numerical value separately of each diameter dimension of described inner tube 15 and outer tube 13 and gap supporting member 17, supporting member 19, band plate 141, the area S1 of a stream and the ratio of the area S2 of secondary stream preferably are made as the ratio of 1:1, and in the gap supporting member 17 that comprises coiled material and supporting member 19, sectional area changes according to volume number or spacing with respect to inner tube 15 and outer tube 13, thereby variable their shape, and be made as by the ratio of the flow velocity by inner tube 15 and outer tube 13 raising that 1:1 realizes thermal conductivity.

Action Specification to described heat-transfer pipe 11.

In inner tube 15, mobile heating agent contact on one side and flows with the heat transfer member 20 of the inboard that is arranged on inner tube 15 and supporting member 19 on one side, in the past, and the increase of the contact area of the heating agent only contacted with inner tube inner peripheral surface 38.Heating agent, by being contacted with heat transfer member 20 and supporting member 19, carries out heat exchange and utilize heat to transmit with heat transfer member 20, supporting member 19.Be passed to inner tube 15 through the conduction of the Btu utilization of heat exchange heat, and carry out heat exchange with the heating agent of interior mobile another system in outer tube 13 and the gap 31 of inner tube 15.Namely, the heat in inner tube 15 interior exchanges contributes to again to improve heat exchanger effectiveness.

In addition, the band plate 141 as heat transfer member 20 contact and is set to helical form with supporting member 20 on one side on one side, and supporting member 19 is provided in inner tube 15 with being web-like, Yi Bian the interior mobile heating agent one side spiral rotating of inner tube 15 or sinuously advance in inner tube 15.Thus, than heating agent and the axis situation of flows straight abreast, can increase contact area and the time of contact of heating agent in inner tube 15 interior contacts.Because be cheap material, thus can relatively not increase flow losses, thus can improve the rate of heat exchange of inner tube 15 and mobile heating agent in this inner tube 15.

Figure 10 (a) comprises band plate being turned round to the profile of the heat-transfer pipe of the heat transfer member that turn 90 degrees shaping every specific length, Figure 10 (b) is the B-B profile of Figure 10 (a), Figure 10 (c) is the C-C profile of Figure 10 (a), and Figure 11 is the stereogram of Figure 10 (a) to the heat transfer member shown in Figure 10 (c).

Heat transfer member 20 also can be made as following formation: the rectangular slab of specific length is for example twisted to 180 ° and the elongated spiral band plate 141 that is shaped with two ends, and for example turn round and turn 90 degrees and by end shaping connected to each other every specific length.In this situation, can offer in advance otch 151 from the both sides of width across the axis of the width central authorities by band plate 141, make thus posture be shaped with every 90 degree reversions.According to this, form, the supporting member 19 by heating agent together with the periphery that is positioned at band plate 141 is stirred and can be increased contact area so that its contact in inner tube 15.In addition, 90 degree of twisting 180 ° of angle and windup-degree of described band plate 141 are not limited to these, also can be made as other angles such as 90 ° or 120 ° by twisting angle, and windup-degree can be set as to other angles such as 45 degree or 60 degree and be shaped.

Figure 12 be make the external diameter of round bar be deformed into ellipse and every specific length change 90 degree towards peripheral part protrude the stereogram of round bar, Figure 13 (a) comprises that the peripheral part of Figure 12 protrudes the profile of the heat-transfer pipe of round bar, Figure 13 (b) is the D-D profile of Figure 13 (a), Figure 13 (c) is the E-E profile of Figure 13 (a), and Figure 13 (d) is the F-F profile of Figure 13 (a).

Heat transfer member 20 can form the peripheral part with oval 155 and protrude round bar 153, and this oval 155 is to be out of shape gained every predetermined distance to radially pushing circular circumference on the length direction of supporting member 19.By being squeezed from the axis orthogonal direction, to clamp the raw-material mode of round bar, the part be extruded is protruded to the radial direction outside, thereby becomes oval 155.This protrusion front of oval 155 contacts with supporting member 19.This direction of extrusion for example every 90 degree alternately changes, and thus the stream of heating agent is stirred and can make it wriggle.For example, inner tube 15 is made as D outer diameter 5=4.4mm, inside diameter D 6=4.0mm, and outer tube 13 is made as external diameter 6.6mm, inside diameter D 4=6mm, and gap supporting member 17 is made as wire diameter d1=0.8mm, supporting member 19 is made as wire diameter d2=1mm, and the sectional area that peripheral part protrudes round bar 153 is made as 1.77mm ²If obtain the area of the area S2 of the area S1 of a stream and secondary stream to the section (Figure 13 (b), Figure 13 (c), Figure 13 (d)) of the heat-transfer pipe 11 shown in Figure 13 (d) according to these numerical value and according to Figure 13 (a), the area S1 of a stream is about 9.5mm ², the area S2 of secondary stream is about 12.1mm ², the area S1 of a stream is about 1:1.27 with the ratio of the area S2 of secondary stream.

According to this heat transfer member 20, can relatively inexpensive and easily manufacture to have and can carry out with inner tube 15 the peripheral part protrusion round bar 153 of heat conducting oval 155.

Heat transfer member 20 can form reducing round bar 161, and this reducing round bar 161 is every predetermined distance, circular circumference alternately to be formed by minor diameter part 159 and large-diameter portion 157 on the length direction of supporting member 19.The spacing of supporting member 19 is different from the spacing of large-diameter portion 157 and minor diameter part 159.For example, inner tube 15 is made as to D outer diameter 5=4.0mm, inside diameter D 6=3.6mm, outer tube 13 is made as external diameter 6.6mm, inside diameter D 4=6mm, gap supporting member 17 is made as wire diameter d1=d2=1mm with supporting member 19, the external diameter of the minor diameter part 159 of reducing round bar 161 is made as 0.3mm, the external diameter of large-diameter portion 157 is made as 0.9mm, if according to these numerical value and according to Figure 14 (a) section (Figure 14 (b) to the heat-transfer pipe 11 shown in Figure 14 (c), Figure 14 (c)) obtain the area of the area S2 of the area S1 of a stream and secondary stream, the area S1 of a stream is made as S1:S2 ≒ 1:1.7 with the ratio of the area S2 of secondary stream in large-diameter portion 157, be made as S1:S2 ≒ 1:1.6 in minor diameter part 159.

According to this heat transfer member 20, by reducing round bar 161 is inserted into to inner tube 15, the heating agent mobile along reducing round bar 161 flows on one side with large-diameter portion 157 collisions on one side.Because this collision upsets flowing of heating agent, heating agent mobile in inner tube 15 is stirred, the heating agent directly passed through under the state do not contacted with inner tube inner peripheral surface 38 or supporting member 19, heat transfer member 20 is reduced, and can make heating agent easily be contacted with inner tube 15, supporting member 19 and heat transfer member 20.

Heat transfer member 20 can form round bar 163, and this round bar 163 is large-diameter portion 157 and minor diameter part 159 are formed by mild face and have a contraction flow region.For example, inner tube 15 is made as to D outer diameter 5=4.4mm, inside diameter D 6=4.0mm, outer tube 13 is made as external diameter 6.6mm, inside diameter D 4=6mm, gap supporting member 17 is made as wire diameter d1=0.8mm, supporting member 19 is made as wire diameter d2=1mm, the external diameter of minor diameter part 159 with round bar 163 of contraction flow region is made as 0.76mm, the external diameter of large-diameter portion 157 is made as 2.0mm, if according to these numerical value and according to Figure 15 (a) section (Figure 15 (b) to the heat-transfer pipe 11 shown in Figure 15 (c), Figure 15 (c)) obtain the area of the area S2 of the area S1 of a stream and secondary stream, the area S1 of a stream is made as S1:S2 ≒ 1:1.47 with the ratio of the area S2 of secondary stream in large-diameter portion 157, be made as S1:S2 ≒ 1:1.11 in minor diameter part 159.

According to this heat transfer member 20, heating agent mobile in inner tube 15 is stirred and it is wriggled, can make heating agent easily contact with inner tube 15, supporting member 19 and heat transfer member 20.In addition, by the round bar raw material being made as with every specific length and the shape of extrusion molding, and the internal diameter that makes large-diameter portion 157 and supporting member 19 about equally, also makes this large-diameter portion 157 contact and be supported with the part of supporting member 19.

It is polygon-shaped solid hopkinson bar 165 that heat transfer member 20 can form section.In legend, forming section is the solid hopkinson bar 165 of general triangular shape.Solid hopkinson bar 165 is by being reversed, and crest line does not form roughly helical form abreast with axis.

For example, inner tube 15 is made as to D outer diameter 5=4.4mm, inside diameter D 6=4.0mm, outer tube 13 is made as external diameter 6.6mm, inside diameter D 4=6mm, and gap supporting member 17 is made as wire diameter d1=0.8mm, and supporting member 19 is made as wire diameter d2=1mm, and the sectional area of solid hopkinson bar 165 is made as 1.8mm ²If according to these numerical value and obtain the area of the area S2 of the area S1 of a stream and secondary stream according to the section (Figure 16 (b)) of the heat-transfer pipe 11 shown in Figure 16 (a) and Figure 16 (b), the area S1 of a stream is about 9.5mm ², the area S2 of secondary stream is about 12.1mm ², the area S1 of a stream is about 1:1.27 with the ratio of the area S2 of secondary stream.

According to this heat transfer member 20, than mainly only showing the described band plate 141 that the back side contacts with heating agent, for example be made as the section triangle of legend, and can make with the contact position of heating agent, be a plurality of positions, and crest line is helical form roughly, form thus flowing towards supporting member 19.Especially by section shape is made as to star etc., and similarly with helical form, reverse and form with described, can not reduce stream (stream sectional area), and can further increase the contact area with heating agent.Thus, the surface area of heat transfer member 20 can be increased, thereby the rate of heat exchange of heating agent and heat transfer member 20 can be improved.

Figure 17 comprises that each described shape example medial end portions of round bar type forms the profile of the heat-transfer pipe of fairshaped heat transfer member.

The heat transfer member 20 of the described shape example of each of round bar type preferably makes end form streamline shape.Can reduce heating agent mobile in end because of the peeling off of causing such as the whirlpool from heat transfer member 20 surfaces or disorderly, can make the inflow of heating agent and outflow become smooth and easy, and can improve the interior heat transfer efficiency of heating agent and inner tube 15.

The heat-transfer pipe 11 of present embodiment forms heat-transfer pipe column unit 39 in this way, can form it as the monomer heat exchanger, and as shown in figure 18, can form heat exchanger 49 by a plurality of heat-transfer pipe column units 39.

This heat exchanger 49 forms described heat-transfer pipe column unit 39 lamination multistages.In this embodiment, lamination is 4 sections.The other end of a branched pipe 21 of a plurality of heat-transfer pipe column units 39 of lamination configuration is connected in inlet header 51 one time, one end of secondary branched pipe 25 is connected in secondary inlet header 55, one end of a concetrated pipe 27 is connected in outlet header 53 one time, and an end of secondary concetrated pipe 29 is connected in secondary outlet header 57.The lamination hop count is not limited to 4 sections of legend, comparable 4 sections few also comparable more than 4 sections, preferably comprise 4 sections～10 sections, each concetrated pipe and branched pipe are connected in each collector.

One side's closure of the axis direction of inlet header 51, secondary inlet header 55, outlet header 53 and secondary outlet header 57, at the affixed screw-in pipe joint 59 of the opposing party of axis direction.Though the diagram of omission, but comprise the flare that for example makes the hole enlargement of pipe arrangement end form, and the outer band cap nut that is inserted to the outside of this flare from the pipe joint of primary fluid supplying tubing, secondary heating agent supplying tubing, primary fluid circulation pipe arrangement and the secondary heating agent circulation pipe arrangement of heat-exchange device side, under the state connected airtight at the front end sheet face by screw-in pipe joint 59 and flare, twist and connect with the external screw thread of the internal thread of cap nut and screw-in pipe joint 59, heat exchanger 49 handling are arranged in heat-exchange device freely thus.Like this, with respect to the heat-exchange device handling, heat exchanger 49, the replacing of the heat exchanger 49 in the time of can easily be maintained (maintenance) thus are installed freely via screw-in pipe joint 59.

Inlet header 51, secondary inlet header 55, outlet header 53, and the closed end of secondary outlet header 57 and fixed connecting end opposition side screw-in pipe joint 59, for example utilize base plate 61 and be fixed and supporting.In addition, in inlet header 51, secondary inlet header 55, outlet header 53, and secondary outlet header 57 and ends screw-in pipe joint 59 opposition sides, also can affixedly can twist the pipe joint connect in succession with screw-in pipe joint 59.By being made as described two ends joint design, and can be by heat exchanger 49 multistage ground lamination more.

According to the heat-transfer pipe 11 formed as described, pie graph 2(a), the heat-transfer pipe column unit shown in Fig. 2 (b), Fig. 7 (a), Fig. 7 (b) and the heat exchanger 49 shown in Figure 18, the primary fluid that flows into thus an inlet header 51 enters branched pipe 21 one time, and flows into each inner tube 15 from a branched pipe 21.After the primary fluid of the inner tube of flowing through 15 and secondary heating agent carry out heat exchange, enter concetrated pipe 27 one time, and flow to outside from an outlet header 53.The secondary heating agent that flows into secondary inlet header 55 enters secondary branched pipe 25, and flows into outer tube 13 from secondary branched pipe 25.Flow through after the secondary heating agent of outer tube 13 and primary fluid carry out heat exchange, enter secondary concetrated pipe 29, and flow to outside from secondary outlet header 57.

Effect to the heat exchanger 49 of described formation describes.

In heat exchanger 49, in inner tube 15, mobile heating agent contact on one side and flows with the heat transfer member 20 of the inboard that is arranged on inner tube 15 and supporting member 19 on one side, in the past, and the contact area increase of the heating agent that the inner tube 15 only contact with inner tube inner peripheral surface 38 is interior.Heating agent is utilized heat transmission to carry out heat exchange by contacting with supporting member 19, heat transfer member 20.Be passed to inner tube 15 through the conduction of the Btu utilization of heat exchange heat, with the heating agent of another system in the gap 31 of flow through outer tube 13 and inner tube 15, carry out heat exchange.Namely, contribute to again to improve heat exchanger effectiveness with the heat of heat transfer member 20, supporting member 19 exchanges.In addition, in this heat exchanger 49, a plurality of heat-transfer pipes 11 that comprise outer tube 13 and inner tube 15 form in parallel to each other, and are arranging adjacently at grade.But the heat exchanger 49 formed on this plane is made as a unit and lamination multistage and forms, thereby can when enlarging heat transfer area, reduce contact area and form.

In addition, the heat-transfer pipe 11 of present embodiment, except described heat exchanger 49, also can form the heat exchanger cylindraceous 65 shown in Figure 19, Figure 20.

This heat exchanger 65 is that many these heat-transfer pipes 11 are given to bunchy and form.Each heat-transfer pipe 11 supports two ends in the mode that mutually keeps predetermined distance, and is housed in housing 67 cylindraceous.In present embodiment, as shown in figure 19, the dividing wall 69 and secondary isolation wall 73 that comprise circular plate shape, this dividing wall 69 has rectangularly and is becoming equally spaced a plurality of inner tube supported hole (supported hole) 71, outer tube supported hole (secondary supported hole) 75 on direction in length and breadth with secondary isolation wall 73, utilizes these dividing wall 69, secondary isolation wall 73 and supports two end portions with breakthrough status.One time dividing wall 69 has the inner tube supported hole (supported hole) 71 that is made as the aperture equated with the external diameter of inner tube 15, and inner tube 15 connects.Secondary isolation wall 73 has the outer tube supported hole (secondary supported hole) 75 that is made as the aperture equated with outer tube 13, and outer tube 13 connects.Under the state connected respectively, between the end wall 77 of dividing wall 69 and housing 67, at the distolateral branching portion 79 that forming a time of the entrance of inner tube 15, in the distolateral once set section 81 that forming of the outlet of inner tube 15.In addition, between dividing wall 69 and secondary isolation wall 73, at the distolateral secondary branching portion 83 that forming of the entrance of outer tube 13, in the distolateral secondary set section 85 that forming of the outlet of outer tube 13.In addition, being connected of dividing wall 69 of the outer tube 13 of these heat-transfer pipes 11 and inner tube 15 and each, secondary isolation wall 73 is also to utilize described welding to carry out, with regard to the gap supporting member 17 with being disposed at outer tube 13 and the gap of inner tube 15 fixing, too, and the end of outer tube 13, inner tube 15 is in the outer openings of each dividing wall 69, secondary isolation wall 73.

Between two secondary isolation walls 73 in housing 67, secondary isolation wall 73, a plurality of cowling panels 87 are being set.The face of the length direction quadrature of these cowling panels 87 formation and heat-transfer pipe 11, and be made as the shape of the section that passes through 89 that there is respectively a part of incision-like do not contacted with the inner peripheral surface of housing 67 in housing 67, for example be made as roughly meniscus (Meniscus) shape.The section that passes through 89 of these cowling panels 87 arranges in the mode of alternately locating on the axis direction in housing 67, three streams that wriggle at the interior formation zigzag of housing 67 thus.In addition, each cowling panel 87 comprises through hole, and this through hole connects and can support these heat-transfer pipes 11 for each heat-transfer pipe 11, for the outer tube 13 of these through holes and each heat-transfer pipe 11, also preferably carries out and described same being welded and fixed.

In addition, as shown in figure 20, distolateral at housing 67, setting inlet header 91 one time at a branching portion 79, setting secondary outlet header 93 in secondary set section 85, and setting three inlet headers 95 of the entrance that becomes three streams.In addition, distolateral at another of housing 67, setting outlet header 97 one time in set section 81 once, set secondary inlet header 99 at secondary branching portion 83, and setting three outlet headers 101 of the outlet that becomes three streams.

According to the heat exchanger 65 of formation like this, the primary fluid that flows into an inlet header 91 enters branching portion 79 one time, and flows into each inner tube 15 from a branching portion 79.The interior mobile primary fluid of inner tube 15, after with the secondary heating agent, carrying out heat exchange, enters once set section 81, and flows to outside from an outlet header 97.The secondary heating agent that flows into secondary inlet header 99 enters secondary branching portion 83, and flows to outer tube 13 from secondary branching portion 83.Flow through the secondary heating agent of outer tube 13 after with primary fluid, carrying out heat exchange, enter secondary set section 85, and flow to outside from secondary outlet header 93.Three heating agents that flow into three inlet headers 95 enter housing 67, and utilize each cowling panel 87 to wriggle and flow around outer tube 13.The interior three times mobile heating agents of housing 67, after with the secondary heating agent, carrying out heat exchange, flow to outside from three outlet headers 101.In addition, three heating agents also can be identical with primary fluid.

In this heat exchanger 65, heat-transfer pipe 11 carries out heat exchange with three heating agents in housing 67, thereby the ratio S1:S2 of the area S2 of the secondary stream in the area S1 of a stream in described inner tube 15 and outer tube 13 can be set as 1:4～1:2, about the shape of the wire diameter of the supporting member 19 of the gap supporting member 17 that is positioned at outer tube 13 and the gap portion of inner tube 15 or inner tube 15, heat transfer member 20, sectional area etc., also can with the ratio of the area S2 of secondary stream, suitably increase and decrease according to the area S1 of a stream.

Therefore, according to heat-transfer pipe 11 and the heat exchanger 49 of present embodiment, can improve the heat exchanger effectiveness of heating agent mobile in inner tube 15 and this inner tube 15.

Claims

1. a heat-transfer pipe is characterized in that comprising:

Outer tube;

Inner tube, be inserted into described outer tube;

The gap supporting member, be configured in the gap length of outer peripheral face of the inner peripheral surface of described outer tube and described inner tube, and comprise the total length that spreads all over described outer tube and wire rod that the outer peripheral face of the inner peripheral surface of helically and described outer tube and described inner tube contacts; And

Supporting member, comprise the total length that spreads all over described inner tube and the wire rod that helically contacts with the inner peripheral surface of described inner tube.

2. heat-transfer pipe according to claim 1 is characterized in that:

Described gap supporting member comprises coiled material, and wire diameter is made as with described gap length and equates.

3. heat-transfer pipe according to claim 1 is characterized in that:

Described gap supporting member comprises the coiled material that minor diameter part and large-diameter portion alternately form, wire diameter is less than described gap length, the volume internal diameter of described minor diameter part is made as the external diameter of described inner tube, and the volume external diameter of described large-diameter portion is made as the internal diameter of described outer tube, and described inner tube is supported in described outer tube.

4. a heat-transfer pipe is characterized in that comprising:

Outer tube;

Inner tube, be inserted into described outer tube;

The gap supporting member, be configured in the gap of outer tube inner peripheral surface and inner tube outer peripheral face, and comprise the total length that spreads all over described outer tube and the wire rod that helically contacts with described outer tube inner peripheral surface and described inner tube outer peripheral face;

Supporting member, comprise the total length that spreads all over described inner tube and the wire rod that helically contacts with the inner tube inner peripheral surface; And

Heat transfer member, spreads all over the total length of described supporting member and be arranged on the center of described supporting member, and at least the part of periphery contacts with described supporting member.

5. heat-transfer pipe according to claim 4 is characterized in that:

Described heat transfer member for being band plate long and that helically reverses on the length direction of described supporting member.

6. heat-transfer pipe according to claim 4 is characterized in that:

Described heat transfer member is that peripheral part protrudes round bar, and described peripheral part protrudes round bar and have the oval section be out of shape every predetermined distance extruding circular circumference on the length direction of described supporting member.

7. heat-transfer pipe according to claim 4 is characterized in that:

Described heat transfer member is the reducing round bar, and described reducing round bar is every predetermined distance, circular circumference alternately to be formed by minor diameter part and large-diameter portion on the length direction of described supporting member.

8. heat-transfer pipe according to claim 4 is characterized in that:

Described heat transfer member is that section is polygon-shaped solid hopkinson bar.

9. a heat exchanger is characterized in that: uses according to arbitrary described heat-transfer pipe in claim 1 to 8,

Described heat-transfer pipe is parallel to each other and is configuring a plurality of;

All inner tube arrival ends are connected in branched pipe and all inner tube ports of export are connected in a concetrated pipe and form stream one time, and

All outer tube arrival ends are connected in the secondary branched pipe and all outer tube ports of export are connected in the secondary concetrated pipe and form the secondary stream.

10. a heat exchanger is characterized in that: uses according to arbitrary described heat-transfer pipe in claim 1 to 8,

Many described heat-transfer pipes give bunchy, the bundle of described heat-transfer pipe is housed in the housing of drum, the arrival end of described inner tube reaches each other the port of export and connects separately from each other and form stream one time, and the arrival end of described outer tube reaches each other the port of export and connects separately from each other and form the secondary stream, and as three streams, forms in described housing.

11. heat exchanger according to claim 10 is characterized in that:

Be arranged on a plurality of cowling panels in described housing, described cowling panel has the face with the length direction quadrature of described heat-transfer pipe, and each described heat-transfer pipe is supported and described three streams are wriggled.