CN1083917A - Double walled heat exchanger - Google Patents
Double walled heat exchanger Download PDFInfo
- Publication number
- CN1083917A CN1083917A CN 93105739 CN93105739A CN1083917A CN 1083917 A CN1083917 A CN 1083917A CN 93105739 CN93105739 CN 93105739 CN 93105739 A CN93105739 A CN 93105739A CN 1083917 A CN1083917 A CN 1083917A
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- pipe
- heat
- fluid
- heat exchanger
- double walled
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Abstract
A kind of heat exchanger has the two layers of walls face to prevent that the danger that mixes is arranged between heat source fluid and heat recipient fluid.This heat exchanger comprises a conducting tube that flows through heat source fluid, this manages a turbulence device of conducting heat between promising increase heat source fluid and the conducting tube, and at least one is wrapped in the conduction coil pipe that flows through heat recipient fluid on this conducting tube, and this pipe and conducting tube are heat exchange relationship.
Description
The present invention relates to the heat exchanger of heat source fluid and heat recipient fluid, and for preventing that the danger that two kinds of fluids mix is provided with the double-walled face.
By heat source fluid is the heat exchanger that heat offers heat recipient fluid known.But, in most of such heat exchangers, one deck wall thickness is only arranged between heat source fluid and heat recipient fluid, therefore, if this wall leaks, under certain conditions, it is unacceptable that a kind of fluid and one other fluid mix.
Target of the present invention provides the heat exchanger of a kind of heat source fluid and heat recipient fluid, wherein, heat source fluid be included in self the conduction pathway and by the conduction coil pipe institute that includes heat recipient fluid around, this conduction pathway and conduction coil pipe are heat exchanging relation.Therefore, leak, it and one other fluid are mixed if the coil pipe of the passage of heat source fluid or heat recipient fluid produces.
A double walled heat exchanger provided by the invention comprises: the conducting tube of heat source fluid circulation, there is one to make heat exchange amount end stream device as much as possible between heat source fluid and the conducting tube in this conducting tube, and at least one flows through conduction coil pipe in it around the conducting tube heat recipient fluid, and conducting tube and conductive pads pipeline are heat exchanging relation.
Represent embodiments of the invention in the accompanying drawing
Fig. 1 is the isometric view of double walled heat exchanger according to an embodiment of the invention.
Figure 1A is the isometric chart of another embodiment of double walled heat exchanger.
Figure 1B is the detailed isometric chart of additional embodiments of the double walled heat exchanger of Figure 1A.This has caused passing to pipeline 12 surfaces by heat source fluid increases to the heat transfer of heat recipient fluid then.
Spiral solid bar 17 of another example expression of turbulent flow parts among Figure 1A, Figure 1A has represented the cross section of a circle and has been the square-section among Figure 1B that rod 17 contacts with the inside of pipe 12.By the excellent 17 coiling spring shapes and the appropriate location of inserting in the pipe 12 are unclamped then, so that at whole rod 17 or manage on 12 the length on the inner surface of rod 17 near pipe 12.Rod 17 has increased manages the 12 interior heating surfaces that contact with fluid to increase heat transfer.In pipe 2 inside and rifle bar 17 inner hurricane band 14 horizontal expansions.This be with 14 in pipeline turbulization.Do not demonstrated tongue piece 16 among Figure 1A, but in certain fluid, tongue piece can be included in being with of Figure 1A and Figure 1B as shown in Figure 1.
Structural material need be used thermally conductive materials, and pipe 12 can be steel, copper or use plastics in some cases.Coil pipe 18 can be plastics or copper, and other has high thermal conductivity and the suitable material of convection cell also can use.
Fig. 2,3 and 4 has represented the embodiment of difform coil pipe 18, and coil pipe 18 is rectangle basically among Fig. 2, and coil pipe 18 is oval substantially among Fig. 3, and coil pipe 18 is to be shaped as the contact surface maximum that makes pipe 18 and pipeline 12 among Fig. 4, is beneficial to conduct heat.Purpose all is will and manage at coil pipe 18 to obtain maximum heat transfer between 12, and still, coil pipe 18 also needn't be attached on the pipe 2.Under this situation, coil pipe 18 can weld on whole coil pipe 18 length or be soldered on 12, perhaps the point of some on coil pipe 18 or be soldered on the pipe at top and bottom.Obtained maximal heat transfer at coil pipe 18 with between managing 12, if but at coil pipe 18 or manage in 12 and to take place to leak or cracking, also can the between expansion.Pipe in 21 fluid and the fluid of managing in 18 can not mix each other, and if leak and take place, fluid can only drain in the space between pipe 12 and the coil pipe 18.
If generation is leaked then can be observed bottom heat exchanger, perhaps in another example, placed electronic detectors and leaked and provide suitable warning to monitor.
Among Fig. 5 the expression one be positioned at the bottom and have and three the pipe 12 one-tenth big inlet headers 22 that T shape is connected.Pipe 12 extends and connects the outlet header 20 at place, top, and can see, heat source fluid flows into by pipe 12 from bottom inlet collector 22 and flows out from top header 20.Coil pipe 18 is connected then around pipe 12 and with top inflow collector 26 and is connected with bottom outflow collector 24.Every coil pipe 18 flows into collector 26 with the top and is connected with bottom outflow collector 24.The heat source fluid heating that heat recipient fluid flows through from coil pipe 18 and flow through in the pipe 12.Pipe 12 is vertical as shown in the figure basically and heat recipient fluid is managed in 18 to dirty.
In one embodiment, surround by heat-insulating material 28 around the coil pipe 18 of managing on 12.Heat-insulating material 28 is preserved heats and prevent that heat from losing from heat exchanger.
In Fig. 5 A, shown three independently coil pipe 18A, 18B and 18C are connected to and flow into collector 26 and flow out on the collector 24 and side by side on every pipe 12.The diameter of pipe 18A, 18B, 18C will and add heat request by traffic requirement to be decided.
In another embodiment, jar 30 of expression among Fig. 6 and 7, it has a plurality of vertical tubes 12, and this pipe 12 extends 33 from base plate 32 to top board in jar 30 and is contained within the tank skin 31.Heat source fluid, hot water is from a hot-water boiler (not shown) in one embodiment, enter bottom inlet 34 and enter a space 36 of the jar 30 under lower plate 32, heat source fluid, flows out from the top outlet 40 at jar 30 tops from the last space 38 of jar 30 between top board 33 that flow into then by pipe 12.
Heat recipient fluid, preferably the inflow collector 26 of water is connecting a series ofly to go into
Fig. 2,3 and 4 is the dissimilar local isometric charts of double wall heat device conduction coil pipe portion of the present invention.
Fig. 5 is the heat exchanger isometric chart of another embodiment of the present invention, and a plurality of conducting tubes are wherein arranged, and each has the independent conduction coil pipe that twines thereon, and they are connected to adjacent inflow subsequently and flow out on the collector.
Fig. 5 A is and similar heat exchanger isometric chart shown in Figure 5, but have on each pipeline three altogether around pipe.
Fig. 6 is placed on the sectional view of the additional embodiments of the double walled heat exchanger in the jar, and heat exchanger has a plurality of conducting tubes, and each has the conduction coil pipe that twines on it again.
Fig. 7 is along the sectional view of 7-7 line among Fig. 6.
Fig. 8 is the isometric chart of the heat exchanger of the embodiment that also has of the present invention.
Fig. 9 is the sectional view of Fig. 8 along 9-9.
Figure 10 is the elevation of the double walled heat exchanger of another embodiment of the present invention, and its two kinds of conducting tubes are mutually around together.
All use term " fluid " in the whole specification, be meant liquid or gas.Typical example but limit is water, steam, hot gas, hot-air, the type of fuel gas and other heat exchanging liquid.
Heat exchanger 10 as shown in Figure 1 has a pipeline 12, wherein is connected with hot fluid, and it is a heat source fluid, to dirty.One turbulent flow parts are arranged in the pipeline 12, it comprises the hurricane band 14 that extends laterally on pipeline 12 inside diameters and extends the rammed tongue piece 16 that stretches out from opposite side again then from a side earlier thereon, so that flow through the fluid turbulization of pipeline 12, and this turbulent flow produces fabulous heat transfer between heat source fluid and heat recipient fluid.
Although shown in hurricane band 14 extend across the diameter of pipeline 12, in a further embodiment should the band also can only extend across the pipeline radius.Also can provide as bending and help or the turbulent flow parts of other shape of similar type, purpose is a turbulization in fluid, and stream pipe 44 passes tank skin 31 as shown in Figure 7 and is connected on a plurality of coil pipes 18 on the pipe 12 independently.Heat recipient fluid passes to the coil pipe 18 from managing 12 to dirty and hot in coil pipe 18.Coil pipe 18 is connected with effuser 46 in the bottom.Manage then 46 pass tank skin 31 and with flow out collector 24 and be connected.In this example, heat recipient fluid flow into from coil pipe 18 tops and to dirty and heat source fluid from managing 12 bottoms and flow into and to the upper reaches.
In another embodiment, not vertical just being done for up or down so if the heat source fluid in the pipe 18 flows and manages 12 with one of them direction.According to adding heat request and other consideration, the heat recipient fluid in the coil pipe 18 can flow or reverse flow with heat source fluid is equidirectional.
The turbulent flow parts that Fig. 5 and pipe shown in Figure 6 12 have a belt-like form are portion within it, to guarantee heat source fluid and to manage heat transfer maximum between 12 the wall.Jar 30 is preferably made by carbon steel with pipe 12 and is welded together, to guarantee that the nothing leakage takes place in the space that forms in the jar by being connected between pipe 12 and base plate 32 and the top board 33.Under the situation of family expenses hot-water heater, coil pipe 18 is copper, stainless steel, plastics or other suitable material, similarly also copper, stainless steel, plastics or other suitable material of collector 24 and outflow tube 46.Heat exchanger 10 uses thermal water source's (not shown) as heat source fluid, and the water in the heat(ing) coil 18 or other fluid.Even at coil pipe 18 or manage in 12 and leak, fluid can be arranged outside jars 30, and two kinds of fluids can not be in contact with one another.
Space in jars 30 can be filled or comprises air or be evacuated with heat-insulating material, conducts heat in this case only to depend on coil pipe 18 and manage contact between 12.In another embodiment, in jar 30, can be provided with the heat transfer medium as oil in the space on every side of pipe 12, not only pass to pipe 18 with the heat that not only makes pipeline 12, and will pass in the heat transfer medium, increase heat transfer thereby pass to pipe 18 by heat transfer medium then.Heat transfer medium, oil, salt solution or other liquid that is fit to as mentioned above, still, preferably heat source fluid and the heat recipient fluid pressure in the coil pipe 18 in the pressure ratio pipe 12 of heat transfer medium liquid is low.Therefore, if the heat source fluid or the heat recipient fluid of confession leak because pressure ratio heat transfer medium height, so heat transfer medium can not enter in pipe 12 or the coil pipe 18.
Though not expression for keeping heat, can have heat insulation to center on jar 30, equally also can have 40 around entrance and exit 34, and flows into collector 26 and flow out collector 24.In another embodiment, insulation can be placed on the coil pipe 18 that encases in the jar as shown in Figure 5 with guarantee at coil pipe 18 and between managing 12 the heat transfer maximum there is no heat loss.
Be another embodiment of heat exchanger shown in Fig. 8 and 9, it discloses the two-stage type layout.Heat source fluid enters inlet header 22; Flow into first tubulation 12, enter intermediate header 50, it has a return bend end of intermediate header 50, and heat source fluid flows through return bend and enters secondary series pipe 12, flows to outlet header 20 then.Heat recipient fluid flows into from the inflow collector that is located at outlet header 20, by the first row coil pipe 18 around second tubulation 12, end shown in the inflow is the first order collector 52 of U shape elbow, flow into second level collector 54 then, heat recipient fluid flows through the secondary series coil pipe 18 around first tubulation 12 then, and enters the outlet header 24 that is located at inlet header 22 next doors.
The two-stage heat exchanger provides higher temperature and lower flow rate.In another embodiment, first order collector 52 is not connected with the second level 54.One single hop heater then only is provided.Such layout can provide lower temperature, but has increased than two sections efficiencies of heat exchanger.
Figure 10 represents another embodiment of a heat exchanger, wherein, the pipe 12 with the pipe 18 around.Pipe 12 holds heat source fluid and manages 18 and hold heat recipient fluid.Pipe 12 and pipe 18 contact with each other with heat exchanging relation.In order to limit, the pipe 12 that holds heat source fluid is defined as pipeline, but the pipe 18 that also can resemble heat recipient fluid is the pipe of same type of material.Pipeline 12 can and can have identical diameter or different diameters by same material manufacturing with pipe 18.The pipeline 12 that twines has formed the turbulent flow parts, so has a hurricane band unimportant in it.
Though pipeline 12 has been defined as the dress heat source fluid, pipe 18 dress heat absorption liquid, the heat exchanger device can be put upside down use, heat source fluid flows through pipe 18 so that heat recipient fluid flows through pipeline 12.And the heat conduction is also reverse.Thisly oppositely can be used as constant arrangement or change according to the special arrangement of heat exchanger.
Illustrated embodiment is under scope of the invention condition or do various variations, and the scope of the invention only will be limited by the following claim book.
Claims (24)
1, a double walled heat exchanger comprises
Conducting tube as the heat source fluid passage, its inside have increases the turbulence device of conducting heat between heat source fluid and the conducting tube, and
At least one is wrapped in the conduction coil pipe that flows through heat recipient fluid around the conducting tube, and it and conducting tube are thermally conductive relation.
2, double walled heat exchanger according to claim 1, wherein pipe contacts with coil pipe.
3, double walled heat exchanger according to claim 1, wherein the cross section of pipe can be circle, rectangle, ellipse and D shape.
4, double walled heat exchanger according to claim 1, comprise the many pipes that connect an inlet header and an outlet header, a plurality of ducted each centered on by a conduction coil pipe at least, every coil pipe has and connects the inflow end that flows into collector and connect the effuser that flows out collector.
5, double walled heat exchanger as claimed in claim 4, wherein the outflow collector of the inlet header of pipe and coil pipe is adjoining.
6, double walled heat exchanger as claimed in claim 4, wherein pipe be vertical and the outlet header of pipe at the top.
7, double walled heat exchanger as claimed in claim 4, wherein a plurality of pipes are disposed in the jar and the base plate in jar extends between top board, dividing into one at tank bottom forms the space of inlet header and establish a space that forms outlet header on the tank deck plate, every pipe in jar has a conduction coil pipe around it at least, and this coil pipe is connected with the outflow collector with the inflow collector.
8, double walled heat exchanger as claimed in claim 7, wherein heat recipient fluid from coil pipe to the upper reaches that flow in of the heat source fluid of Guan Zhongliu is to dirty.
9, double walled heat exchanger as claimed in claim 7 wherein is being provided with heat transfer medium to help the heat transfer between pipe and the coil pipe between the jar inside ceiling panel.
10, double walled heat exchanger as claimed in claim 1, wherein turbulence device is made of the hurricane band in the pipe.
11, double walled heat exchanger as claimed in claim 1, wherein turbulence device is made of the spiral solid bar of a coil spring shape, and is close to side opposite, and is included in the hurricane band in the spiral solid bar.
12, double walled heat exchanger as claimed in claim 1, wherein spiral has the groove of a plurality of band tongue pieces of opening thereon, and make tongue piece from be with to overhanging, to help providing turbulent flow to pipe endogenous pyrogen fluid.
13, wall heat exchanger as claimed in claim 4, wherein conducting tube is intertwined with the conduction coil pipe.
14, double walled heat exchanger as claimed in claim 4, wherein heat source fluid and heat recipient fluid reverse flow.
15, double walled heat exchanger as claimed in claim 4, wherein heat source fluid basically with the heat recipient fluid co-flow.
16, double walled heat exchanger as claimed in claim 4 wherein has the two-stage pipe between inlet header and outlet header, between inflow and outflow collector the two-stage coil pipe is arranged.
17, double walled heat exchanger as claimed in claim 1, wherein conducting tube is suitable for flowing through heat recipient fluid and conducts coil pipe has heat source fluid to flow through.
18, a kind of with heat source fluid to the heat recipient fluid heat-transferring method, step comprises:
Make a heat source fluid that flows through pipe form one turbulent flow, provide one to flow through a coil pipe that is twining this pipe and be the heat recipient fluid of heat exchanging relation, therefore heated heat recipient fluid with heat source fluid in this pipe.
19, as method as described in the claim 18, comprise making heat source stream at the Guan Zhongxiang upper reaches, make heat recipient fluid by coil pipe to dirty.
20, as method as described in the claim 18, the stream that wherein absorbs heat flows through pipe and heat source fluid flows through coil pipe.
21, a kind of turbulence device that turbulization is conducted heat with increase in fluid comprises
The pipeline that fluid flows through,
The solid bar of a helical spring shape, this rod is being pressed the inner surface of pipe in pipeline, and
One within pipe inside spin rod, extend with rifle bar in the hurricane band of side contacts.
22, as the turbulence device of claim 21, wherein rifle bar is made of the solid bar of a circular cross-section.
23, as the turbulence device of claim 21, wherein rifle bar is made up of the solid bar of a square-section.
24, as the turbulence device of claim 21, wherein spiral has a plurality of cutting grooves thereon to form from going up to overhanging tongue piece, and tongue piece helps the liquid turbulization to flowing through in managing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86724792A | 1992-04-10 | 1992-04-10 | |
| US07/867,247 | 1992-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1083917A true CN1083917A (en) | 1994-03-16 |
Family
ID=25349415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93105739 Pending CN1083917A (en) | 1992-04-10 | 1993-04-10 | Double walled heat exchanger |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1083917A (en) |
| CA (1) | CA2093767A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022933A (en) * | 2010-12-16 | 2011-04-20 | 中国扬子集团滁州扬子空调器有限公司 | Wound pipe heat exchanger |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2677130A1 (en) * | 2012-06-19 | 2013-12-25 | MANN+HUMMEL GmbH | Air intake system of a turbocharged internal combustion engine |
-
1993
- 1993-04-08 CA CA 2093767 patent/CA2093767A1/en not_active Abandoned
- 1993-04-10 CN CN 93105739 patent/CN1083917A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022933A (en) * | 2010-12-16 | 2011-04-20 | 中国扬子集团滁州扬子空调器有限公司 | Wound pipe heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2093767A1 (en) | 1993-10-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |