CN100578132C - A heat exchanger element and a water heater and heat pump utilising same - Google Patents
A heat exchanger element and a water heater and heat pump utilising same Download PDFInfo
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- CN100578132C CN100578132C CN200680033780A CN200680033780A CN100578132C CN 100578132 C CN100578132 C CN 100578132C CN 200680033780 A CN200680033780 A CN 200680033780A CN 200680033780 A CN200680033780 A CN 200680033780A CN 100578132 C CN100578132 C CN 100578132C
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- copper pipe
- heat exchanger
- water heater
- exchanger component
- heat pump
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Abstract
A heat exchanger element (30) formed from an inner copper tube (32) and an outer copper tube (34). The entire outer surface of the inner tube (32) is substantially in contact with the entire inner surface of the outer tube (34).
Description
Technical field
The water heater and the heat pump that the present invention relates to a kind of heat exchanger component and forming method thereof and utilize this heat exchanger component.
The present invention is mainly used in domestic hot water heater, and should be used for reference to this hereinafter that present invention is described.Yet, the invention is not restricted to this special-purpose, and heat exchanger also is applicable to the fluid that heats beyond dewatering in various heat exchanger applications.
Background technology
Regulator in comprising many compasses of competency of Australia, Europe and the U.S. requires in the family expenses hot-water heater used heat exchanger component to have circular flow is added hot fluid and heated moisture separates in hot-water cylinder double layer of metal through heat exchanger.Even this is to damage in order to ensure the one deck in the metal level heat exchanger fluid is mixed with the water of supplying with the user.
A kind of known " double-walled " hot-water heater utilization is wrapped in the copper pipe in the outside of cylindrical steel water pot.Through copper pipe pumping heat exchanger fluid.Yet, this device be difficult to make and manufacturing cost higher relatively, especially around the step of the jar rolling pipe of about 600mm diameter.This device also has relatively poor relatively heat exchanger effectiveness, because as conductor, steel is than the little almost thirtyfold of effect of copper.
Another kind of known " double-walled " hot-water heater utilization is positioned a volume copper pipe of the inboard of the pipe in the water pot.This device also is that manufacturing difficulty and manufacturing cost are higher relatively.Guarantee that it is difficult that the contact of good face-face is carried out in copper tube and tube inside, and good face-face contact is essential for good heat exchanger effectiveness.
Summary of the invention
The objective of the invention is to overcome or improve substantially the defective of at least one or a plurality of above-mentioned prior aries.
Therefore, first aspect the invention provides a kind of method that forms heat exchanger component, and this method may further comprise the steps:
A. stretch first copper pipe and second copper pipe, the external diameter of first copper pipe is less than the internal diameter of second copper pipe;
B. first copper pipe is inserted in second copper pipe;
Described first copper pipe and described second copper pipe are passed be suitable for second copper pipe is expressed to roll former on first copper pipe, the whole outer surface of the copper pipe of winning is roughly contacted with the total inner surface of second copper pipe;
D. will in above-mentioned steps c., anneal by described first copper pipe and described second copper pipe through extruding;
E. will be through described steps d. described first copper pipe and described second copper pipe after the middle annealing bend to required structure; And
F. will be through crooked described first copper pipe and the annealing of described second copper pipe in described step e..
Step e. preferably includes the described steps d of process. and described first copper pipe and described second copper pipe after the middle annealing bend to the general cylindrical shape shape, and most preferably described step e. comprises the step that is formed the cylindrical wall with general cylindrical shape shape by spiral first copper pipe and second copper pipe.
Step a. preferably includes to stretch has second copper pipe of interior dimpled grain or groove.
Second aspect the invention provides the formed heat exchanger component of a kind of method according to first aspect present invention.
The third aspect the invention provides a kind of water heater, and it comprises jar and according to the heat exchanger component of second aspect.
Fourth aspect the invention provides a kind of hot water heat pump, and it comprises:
Heat pump circuit, this heat pump circuit comprises: evaporator coil, compressor, become the condenser coil and the thermostatic expansion valve (TX valve) of heat exchange relationship with water body, this heat pump circuit is fit to hold the cold-producing medium filler, wherein, condenser coil is the form according to the heat exchanger component of second aspect present invention.
Description of drawings
Now only with way of example and preferred implementation with reference to the accompanying drawings to describe the present invention, wherein:
Figure 1A is the cross-sectional schematic side view according to first embodiment of water heater of the present invention, and this water heater has first embodiment according to heat exchanger component of the present invention;
Figure 1B is the cross sectional end view of the heat exchanger component shown in Figure 1A;
Fig. 2 is the cross-sectional schematic side view according to second embodiment of water heater of the present invention;
Fig. 3 is the cross-sectional schematic side view according to the 3rd embodiment of water heater of the present invention;
Fig. 4 is the cross-sectional schematic side view according to the 4th embodiment of water heater of the present invention;
Fig. 5 is the cross sectional end view according to second embodiment of heat exchanger component of the present invention;
Fig. 6 is the schematic diagram according to the embodiment of hot water heat pump of the present invention.
The specific embodiment
Figure 1A illustrates first embodiment according to domestic hot water heater 10 of the present invention.This water heater 10 comprises the insulated steel circle tube tank 12 of 250 liter capacities that have upper domed end 14 and domed lower end 16 respectively.Jar 12 becomes roughly vertical mode to install with its longitudinal axis.Upper domed end 14 has the central constriction opening 18 that has outward flange 20.During use, jar 12 almost completely is full of water.
First embodiment of heat exchanger component 30 passes opening 18 and is inserted into a jar inside.Copper pipe 32 and outer copper pipe 34 in element 30 is formed with respectively are shown as Figure 1B the best.The external diameter of interior pipe 32 is substantially equal to the internal diameter of outer tube 34, and the whole outer surface of pipe 32 roughly contacts with the total inner surface of outer tube 34 in making.Roughly Jie Chu this inner surface and this outer surface make the maximizes heat transfer of the water of high temperature refrigerant fluid (for example, water or ethylene glycol or their mixture) in jars 12 by the pumping of interior pipe 32 inner institutes.Heat exchanger component 30 also has inlet portion 38 and export department 40.By being indicated by arrow by 30 caused jars 12 interior water circulations of the heating element heater of energy supply.An advantage of water heater 10 is that owing to via opening 18 element 30 is incorporated in the jar 12, its cost is relatively low and it is simple to make.Another advantage is, because cryogenic fluid directly carries out heat transmission via the copper pipe 32 with relative high thermal conductivity and 34 pairs of water, so the present invention has higher efficient.
Making up heating element heater 30 may further comprise the steps.At first, two copper pipes are stretched to about 19 meters length.Narrow tube 32 has the internal diameter of 5.0mm and the external diameter of 5.5mm.Major diameter outer tube 34 has the internal diameter of 5.7mm and the external diameter of 6.3mm.Pipe 32 was inserted in the outer tube 34 in difference between the external diameter of interior pipe 32 and the internal diameter of outer tube 34 was allowed.In this stage, there is little gap between the inner surface of the outer surface of interior pipe 32 and outer tube 34.Then, two pipes 32 and 34 are presented by roll former, roll former extruding outer tube 34 makes manages 32 to eliminate the gap in its contact.Roll forming has also extended the length of outer tube 34 slightly, if desired, can be when initial outer tube 34 be manufactured and manages 32 so that outer tube 34 extends to common length in being shorter than slightly.Alternately, can reduce the plussage of outer tube 34.Roll forming has also hardened and has managed 32 and 34.Then, (roll forming/extruding) pipe 32 and 34 is annealed so that they are softening, thereby next their crooked also spirals can be wound in shape as shown in Figure 1.Then, once more with (bent/spiralled) pipe 32 and 34 annealing.At last, suitable connection fittings (for example, brass fittings) are attached to inlet portion 38 and export department 40.
Fig. 2 illustrates second embodiment of water heater 210.Utilize the feature of similar reference numerals and the feature similarity that is used for describing first embodiment.Water heater 210 is closely similar at the water heater 10 shown in structure and operating aspect and Fig. 1, except this heating element heater 30 by outer cylinder or manage 42 and hold, outer cylinder or manage 42 and play the effect of the heat-conducting area that increases heat exchanger component 30 and therefore increased from adding the heat transfer of the water of hot fluid 36 in the jar 12.
Fig. 3 illustrates the 3rd embodiment of water heater 310.Utilize the feature of similar reference numerals and the feature similarity that is used for describing aforementioned embodiments.Water heater 310 is also closely similar with the water heater 10 shown in Fig. 1 in structure and operating aspect, is used for increasing the inner cylinder of its heat-conducting area or manages 44 except this heat exchanger component 30 has.
Fig. 4 illustrates the 4th embodiment of water heater 410.Utilize the feature of similar reference numerals and the feature similarity that is used for describing aforementioned embodiments.Water heater 410 is also closely similar with the water heater 10 shown in Fig. 1 in structure and operating aspect, has outer tube 42 and the interior pipe 44 that is used for increasing its heat-conducting area respectively except this heat exchanger component 30.
Fig. 5 illustrates respectively second embodiment of the heat exchanger component 130 that is formed by interior copper pipe 132 and outer copper pipe 134.Element 130 with to make up about the similar mode of the aforementioned manner of element 30, just the inner surface initial setting up of outer tube 134 has interior dimpled grain or groove 136.After rolling formation, because the left gap of dimpled grain/groove 136, only about 80% inner surface of outer tube 134 contacts with the outer surface of interior pipe 132.This reduces the capacity of heat transmission/heat exchanger effectiveness of element 130 slightly.Yet, in some compass of competency, need the air gap to satisfy security regulations.
Fig. 6 illustrates the embodiment according to hot water heat pump 140 of the present invention.Heat pump 140 has the heat pump circuit that comprises evaporator coil 142, compressor 144, condenser coil 146 and thermostatic expansion valve (TX valve) 148.This loop configuration becomes: the outlet of compressor 144 is connected to the inlet of condenser coil 146, the outlet of condenser coil 146 is connected to the inlet of TX valve 148, the outlet of TX valve 148 is connected to the inlet of evaporator coil 142, and the outlet of evaporator coil 142 is connected to the inlet of compressor 144.This loop is suitable for holding the cold-producing medium filler.As known in the art, the assembly of operation heat pump 140 is to produce kind of refrigeration cycle.Condenser coil 146 is positioned to become heat exchange relationship with the water body that is held by jar 150.Condenser coil 146 is as the form of preamble referring to figs. 1 through the described double-walled heat exchanger component of Fig. 5.
Advantage as the double-walled heat exchanger component of condenser coil 146 in heat pump application is, it provides the most direct to the water and therefore the most effective energy transmission path by heat conduction.More particularly, when condenser coil 146 is suspended in the water, there is not the air gap around the condenser coil 146.Cause the heat transfer coefficient minimum from the cold-producing medium to water like this.
This is opposite with the refrigeration system that existing use copper tube system holds cold-producing medium, and for example copper pipe is wrapped in the existing heat pump configurations on the water pot outer surface.
In addition, the double walled construction of condenser coil 146 provides the security feature (the internal refrigeration storage agent spill and leakage path between interior pipe and the outer tube) that only just works when interior tube failure.Because the characteristic of manufacture process and condenser coil are suspended in the water that is held in the low jar of the pressure of the cold-producing medium in the pressure ratio condenser coil, this security feature is only possible.
This security feature that common " tube-in-tube " designing institute has always is arranged to the form of the air gap between the pipe, and it is bad to cause heat to be transmitted like this.
Although described the present invention, it will be understood by those skilled in the art that the present invention can be with much other form enforcement with reference to preferred implementation.
Claims (7)
1. method that forms heat exchanger component said method comprising the steps of:
A. stretch first copper pipe and second copper pipe, the external diameter of described first copper pipe is less than the internal diameter of described second copper pipe;
B. described first copper pipe is inserted in described second copper pipe;
Described first copper pipe and described second copper pipe are passed be suitable for described second copper pipe is expressed to roll former on described first copper pipe, make the whole outer surface of described first copper pipe roughly contact with the total inner surface of described second copper pipe;
D. will in above-mentioned steps c., anneal by described first copper pipe and described second copper pipe through extruding;
E. will be through described steps d. described first copper pipe and described second copper pipe after the middle annealing bend to required structure; And
F. will be through crooked described first copper pipe and the annealing of described second copper pipe in described step e..
2. the method for claim 1, wherein step e. comprises and will bend to the general cylindrical shape shape through described first copper pipe and described second copper pipe after the annealing in the described steps d.
3. method as claimed in claim 2, wherein, described step e. comprises the step that is formed the cylindrical wall with general cylindrical shape shape by spiral first copper pipe and second copper pipe.
4. method as claimed in claim 1 or 2, wherein, step a. comprises that stretching has described second copper pipe of indent line or groove.
5. heat exchanger component by forming as method as described in each qualification in the claim 1 to 4.
6. water heater, it comprises jar and heat exchanger component according to claim 5.
7. heat pump circuit, described heat pump circuit comprises: evaporator coil, compressor, become the condenser coil and the thermostatic expansion valve of heat exchange relationship with water body, described heat pump circuit is suitable for holding the cold-producing medium filler,
Wherein, described condenser coil is the form of heat exchanger component according to claim 5.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005905136A AU2005905136A0 (en) | 2005-09-16 | A heat exchanger element and a water heater | |
| AU2005905136 | 2005-09-16 | ||
| AU2005906999 | 2005-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101263361A CN101263361A (en) | 2008-09-10 |
| CN100578132C true CN100578132C (en) | 2010-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680033780A Expired - Fee Related CN100578132C (en) | 2005-09-16 | 2006-08-01 | A heat exchanger element and a water heater and heat pump utilising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100578132C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519291A (en) * | 2011-12-28 | 2012-06-27 | 英特换热设备(浙江)有限公司 | Heat exchange tube |
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2006
- 2006-08-01 CN CN200680033780A patent/CN100578132C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101263361A (en) | 2008-09-10 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20200801 |
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| CF01 | Termination of patent right due to non-payment of annual fee |