CN104713234B - Water-heater heat-exchanging device and its manufacturing method - Google Patents
Water-heater heat-exchanging device and its manufacturing method Download PDFInfo
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- CN104713234B CN104713234B CN201510062025.9A CN201510062025A CN104713234B CN 104713234 B CN104713234 B CN 104713234B CN 201510062025 A CN201510062025 A CN 201510062025A CN 104713234 B CN104713234 B CN 104713234B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 238000002485 combustion reaction Methods 0.000 claims abstract description 45
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 41
- 238000004512 die casting Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The present invention discloses water-heater heat-exchanging device, including water inlet pipe, outlet pipe and first group of communicating pipe, second group of communicating pipe, molded by aluminium alloy integrated die-casting combustion chamber, heat conducting pipe, heat exchange fin heat exchange main body, heat conducting pipe is equipped at least three, and every heat conducting pipe protrudes out the first end and second end of heat exchange main body；First group of communicating pipe and water inlet pipe are located at the first end of heat exchange main body, and water inlet pipe is used to be connected to the heat conducting pipe for protruding out heat exchange body first end, is connected between remaining heat conducting pipe for being used to protrude out heat exchange body first end first group of communicating pipe；Second group of communicating pipe and outlet pipe are located at the second end of heat exchange main body, and outlet pipe is used to be connected to the heat conducting pipe for protruding out heat exchange body first end, is connected between remaining heat conducting pipe for being used to protrude out heat exchange body first end second group of communicating pipe.The invention also discloses the manufacturing methods of water-heater heat-exchanging device.The present invention not only saves cost, and also improves the integral strength and heat transfer efficiency of heat exchanger.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a heat exchanger of a water heater and a manufacturing method thereof.
Background
The heat exchange structures of the heat exchangers of the existing gas water heaters all adopt red copper heat conduction pipes to be inserted in fins, and the manufacturing cost of red copper materials is higher, so that people begin to manufacture the heat exchangers by adopting aluminum alloy materials with lower cost. However, in the existing heat exchanger, a plurality of fins need to be penetrated on the heat conduction pipe, and the coiled pipe is arranged outside the combustion chamber, so that the efficiency is low, and the manufactured aluminum alloy heat exchanger has low strength.
Disclosure of Invention
The invention mainly aims to provide a heat exchanger of a water heater and a manufacturing method thereof, aiming at saving cost and improving the strength of the heat exchanger of the water heater.
In order to achieve the purpose, the invention provides a water heater heat exchanger which comprises a heat exchange main body, wherein a combustion chamber, a heat conduction pipe and a heat exchange fin are integrally formed by aluminum alloy in a die-casting manner, and the heat exchange fin is arranged above the combustion chamber; the heat conduction pipes are at least three, and each heat conduction pipe protrudes out of the first end and the second end of the heat exchange main body; the hot water heat exchanger also comprises a water inlet pipe, a water outlet pipe, a first group of communicating pipes and a second group of communicating pipes, wherein the first group of communicating pipes and the water inlet pipe are positioned at the first end of the heat exchange main body; the second group of communicating pipes and the water outlet pipe are positioned at the second end of the heat exchange body, the water outlet pipe is used for communicating with a heat conduction pipe which protrudes out of the first end of the heat exchange body, and the second group of communicating pipes is used for communicating the rest heat conduction pipes which protrude out of the first end of the heat exchange body;
the outside of the combustion chamber is also provided with a coiled pipe which is coiled on the combustion chamber and is coiled on the side edge of the combustion chamber by the bottom of the combustion chamber; one end of the coiled pipe, which is far away from the heat exchange fins, is communicated with the water inlet pipe, and one end of the coiled pipe, which is close to the heat exchange fins, is communicated with a heat conduction pipe, which protrudes out of the second end of the heat exchange body, through a second group of communicating pipes.
Preferably, the combustion chamber, the heat conduction pipe and the heat exchange fin are integrally formed by aluminum alloy through die-casting molding to form the heat exchange body.
Preferably, a coiled pipe is further arranged outside the combustion chamber; one end of the coiled pipe, far away from the heat exchange fins, is communicated with the water inlet pipe, and one end of the coiled pipe, close to the heat exchange fins, is communicated with a heat conduction pipe protruding out of the second end of the heat exchange body through a second group of communicating pipes.
Preferably, the coiled pipe, the combustion chamber, the heat conduction pipe and the heat exchange fin are integrally formed by aluminum alloy through die-casting to form the heat exchange body; openings are further formed in the positions, close to the first end and the second end of the heat exchange main body, of the coiled pipe; the opening is blocked by a plug.
Preferably, the communicating pipe at the first end of the heat exchange main body is formed into a right end cover by aluminum alloy through integral die casting, and the communicating pipe at the second end of the heat exchange main body is formed into a left end cover by aluminum alloy through integral die casting.
Preferably, the left end cover and the right end cover are provided with openings, and the openings are plugged by plugs.
Preferably, the inner and outer surfaces of the heat exchange main body and the communicating pipe are both subjected to chemical nickel plating surface treatment.
Preferably, the shape of the cross section of the heat conduction pipe can be circular, oval, oblate, rectangular or square.
In addition, in order to achieve the above object, the present invention further provides a method for manufacturing a heat exchanger of a water heater, wherein the method for manufacturing the heat exchanger of the water heater comprises the following steps:
according to a preset die-casting die for the heat exchange main body, the heat exchange main body with a combustion chamber, heat conduction pipes and heat exchange fins is integrally formed by die-casting aluminum alloy, wherein the number of the heat conduction pipes is at least three, and each heat conduction pipe protrudes out of a first end and a second end of the heat exchange main body in a protruding mode;
providing a water inlet pipe, a water outlet pipe and two groups of communicating pipes, wherein the first group of communicating pipes and the water inlet pipe are positioned at the first end of the heat exchange main body, the water inlet pipe is used for communicating with a heat conduction pipe which protrudes out of the first end of the heat exchange main body, and the first group of communicating pipes are used for communicating other heat conduction pipes which protrude out of the first end of the heat exchange main body; the second group of communicating pipes and the water outlet pipe are located at the second end of the heat exchange body, the water outlet pipe is used for being communicated with the heat conduction pipe protruding out of the first end of the heat exchange body, and the second group of communicating pipes is used for being communicated with the rest of the heat conduction pipes protruding out of the first end of the heat exchange body.
Preferably, the communicating pipe positioned at the first end of the heat exchange main body is formed into an integral structure by aluminum alloy die-casting; the communicating pipe positioned at the second end of the heat exchange main body is of an integrated structure formed by aluminum alloy die-casting.
Preferably, the method for manufacturing the heat exchanger of the water heater further comprises the following steps:
and the inner surface and the outer surface of the heat exchange body and the communicating pipe are subjected to chemical nickel plating surface treatment.
Preferably, a coiled pipe is further arranged on the periphery of the combustion chamber, and the coiled pipe, the combustion chamber, the heat conduction pipe and the heat exchange fin are integrally formed by aluminum alloy through die-casting forming to form the heat exchange body.
Preferably, the method for manufacturing the heat exchanger of the water heater further comprises the following steps:
and providing a plug for plugging an opening on the coiled pipe of the heat exchange main body.
In summary, compared with the water heater in the prior art, the water heater of the invention has the following beneficial effects:
(1) the heat exchanger main body is die-cast by adopting integral aluminum alloy, so that the strength is high; the fins and the water channels conduct heat integrally, so that the heat conduction efficiency is improved;
(2) the communicating pipe of the heat conduction pipe in the communicating heat exchanger main body adopts an integrated structure formed by aluminum alloy die-casting, namely the left end cover and the right end cover, so that the strength of the communicating pipe is enhanced, and the installation is facilitated.
(3) The structural design of each part of the water heater can treat the inner surface and the outer surface of the aluminum alloy, so that the service life can be prolonged, the water quality is pollution-free and more sanitary, and the water heater is better for the body of a user;
(4) the aluminum alloy die-casting process can greatly improve the production efficiency and reduce the cost.
Drawings
FIG. 1 is a schematic front view of a heat exchanger according to the present invention;
FIG. 2 is a schematic diagram of the right side view of the heat exchanger shown in FIG. 1;
FIG. 3 is a schematic diagram of the heat exchanger of the present invention shown in FIG. 1 in a left side view;
3 FIG. 3 4 3 is 3a 3 schematic 3 cross 3- 3 sectional 3 view 3 of 3 the 3 heat 3 exchanger 3 shown 3 in 3 FIG. 3 1 3 taken 3 along 3 line 3A 3- 3A 3; 3
FIG. 5 is a schematic cross-sectional view of the heat exchanger shown in FIG. 1 taken along line B-B;
FIG. 6 is a schematic cross-sectional view of the heat exchanger shown in FIG. 1 taken along line C-C;
fig. 7 is a schematic cross-sectional view of the heat exchanger shown in fig. 1 along line D-D.
FIG. 8 is a schematic front view of the heat exchange body of the present invention;
FIG. 9 is a schematic diagram of the right side view of the heat exchange body shown in FIG. 8;
FIG. 10 is a schematic diagram of the heat exchange body shown in FIG. 8 from a left side view;
FIG. 11 is a schematic front view of a right end cap of the heat exchanger of the present invention;
FIG. 12 is a rear view of the right end cap of the heat exchanger of the present invention;
FIG. 13 is a schematic cross-sectional view of the right end cap shown in FIG. 12 taken along E-E;
FIG. 14 is a front view of the left end cap of the heat exchanger of the present invention;
FIG. 15 is a rear view of the left end cap of the heat exchanger of the present invention;
FIG. 16 is a cross-sectional view along F-F of the left end cap of FIG. 15;
FIG. 17 is a schematic flow chart diagram of a first embodiment of a method of manufacturing a heat exchanger for a water heater in accordance with the present invention;
FIG. 18 is a schematic flow chart of a second embodiment of the method of manufacturing a heat exchanger for a water heater in accordance with the present invention.
In order to make the technical solution of the present invention clearer and clearer, the following detailed description is made with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a heat exchanger. As shown in fig. 1 to 3, fig. 1 is a schematic front view of a heat exchanger according to the present invention; FIG. 2 is a schematic diagram of the right side view of the heat exchanger shown in FIG. 1; fig. 3 is a schematic structural view of a left side view of the heat exchanger of the present invention shown in fig. 1. The heat exchanger comprises a heat exchange main body, a left end cover 60, a right end cover 50, a water inlet pipe 70, a water outlet pipe 80 and a plug 90.
3 specifically 3, 3 as 3 shown 3 in 3 fig. 3 4 3 to 3 6 3, 3 fig. 3 4 3 is 3a 3 schematic 3 cross 3- 3 sectional 3 structure 3 of 3 the 3 heat 3 exchanger 3 shown 3 in 3 fig. 3 1 3 along 3 the 3 line 3a 3- 3a 3; 3 FIG. 5 is a schematic cross-sectional view of the heat exchanger shown in FIG. 1 taken along line B-B; FIG. 6 is a schematic cross-sectional view of the heat exchanger shown in FIG. 1 taken along line C-C; fig. 7 is a schematic cross-sectional view of the heat exchanger shown in fig. 1 along line D-D. The heat exchange body comprises a combustion chamber 10, a heat conduction pipe 20, a heat exchange fin 30 and a coil pipe 40 which are integrally formed by aluminum alloy through die casting. The heat exchange fins 30 are located above the combustion chamber 10. The heat conduction pipes 20 are disposed in the heat exchange fins 30 and protrude out of two ends of the heat exchange body. The coil pipe 40 is wound around the combustion chamber 10 and is wound from the bottom of the combustion chamber 10 around the side of the combustion chamber 10. In this embodiment, the coiled tubing 40 includes a first section 41, a second section 42, and a third section 43. Wherein,
one end of the first section 41 is located at the first end 101 of the heat exchange body and forms a water inlet port 411; the other end of the first section 41 extends along the side 103a of the combustion chamber 10 up to the other side 103b of the combustion chamber 10 and communicates with one end of the second section 42 located at the first end 101 of the heat exchange body. Moreover, since the cross section of the combustion chamber 10 is quadrilateral, after the first section 41 is attached to the side of the combustion chamber 10, the folded corner of the first section 41 forms an opening, and the opening is blocked by the plug 90, so that the first section 41 forms a closed water path.
The end of the third section 43 at the first end 101 of the heat exchange body communicates with the other end of said second section 42, the other end of the third section 43 extends along the side 103a of the combustion chamber 10 up to the other side 103b of the combustion chamber and forms a water outlet port 432. Moreover, since the cross section of the combustion chamber 10 is quadrilateral, after the third section 43 is attached to the side of the combustion chamber 10, the folded corner of the third section 43 forms an opening, and the opening is blocked by the plug 90, so that the third section 43 forms a closed water path.
With reference to fig. 8-10, fig. 8 is a schematic front view of the heat exchange body of the present invention; FIG. 9 is a schematic diagram of the right side view of the heat exchange body shown in FIG. 8; fig. 10 is a schematic structural view of a left side view of the heat exchange body shown in fig. 8. In this embodiment, the number of the heat pipes 20 is 5, and one end of the heat pipe 20 protrudes out of the first end 101 of the heat exchange body, and the other end of the heat pipe 20 protrudes out of the second end 102 of the heat exchange body. Wherein, the ends of the heat conductive pipes 20 protruding out of the first end 101 of the heat exchange body are correspondingly formed with corresponding heat conductive pipe openings 21a, 22a, 23a, 24a, 25a, and the ends of the heat conductive pipes 20 protruding out of the second end 102 of the heat exchange body are formed with corresponding heat conductive pipe openings 21b, 22b, 23b, 24b, 25 b. It is understood that the cross-sectional shape of the heat conductive pipe 20 may be circular, oval, oblate, rectangular, or square.
After the heat exchange body is formed, the two groups of communicating pipes can communicate the heat conduction pipes 20 and the coil pipes 40, so that a waterway system can be conducted. One group of communicating pipes are arranged at the first end of the heat exchange main body, and the other group of communicating pipes are arranged at the second end of the heat exchange main body. Specifically, the water outlet port 432 of the coil pipe 40 communicates with the heat pipe opening 21a, the heat pipe opening 22a communicates with the heat pipe opening 23a, the heat pipe opening 24a communicates with the heat pipe opening 25a, the heat pipe opening 21b communicates with the heat pipe opening 22b, and the heat pipe opening 23b communicates with the heat pipe opening 24b via the plurality of U-shaped communication pipes. Then, the water inlet pipe 70 is connected to the water inlet port 411 of the coil pipe 40, and the water outlet pipe 80 is connected to the heat pipe opening 25 b. Thus, the path of the waterway system is: water enters from the water inlet pipe 70, enters along the water inlet port 411 of the coiled pipe 40 and flows out from the water outlet port 432 of the coiled pipe 40; then flows into the heat pipe 20 through the heat pipe opening 21a, and flows through the heat pipe opening 21b, the heat pipe opening 22a, the heat pipe opening 23b, the heat pipe opening 24a, and the heat pipe opening 25a of the heat pipe 20 in this order; finally, the heat pipe 20 flows out from the heat pipe opening 25b and flows out from the water outlet pipe 80.
For convenience of installation, the present embodiment may further integrate a plurality of U-shaped communication pipes located at the first end 101 and the second end 102 of the heat exchange body.
As shown in fig. 11 to 13, the right end cap 50 on the first end 101 of the heat exchange body is formed by die casting of an aluminum alloy into an integral structure having a plurality of communication pipes. The right end cap 50 includes an end cap body and six openings formed in the end cap body, i.e., a first opening 501, a second opening 502, a third opening 503, a fourth opening 504, a fifth opening 505, and a sixth opening 506. Three channels are also provided in the end cap body of the right end cap 50 for communicating the two openings. As shown in fig. 13, the fifth opening 505 and the sixth opening 506 communicate with each other through the passage 51. And the fifth opening 505 is for interfacing with the heat pipe opening 24a, and the sixth opening 506 is for interfacing with the heat pipe opening 25a, thereby realizing that the heat pipe in which the heat pipe opening 24a is located communicates with the heat pipe in which the heat pipe opening 25a is located.
Similarly, the third opening 503 and the fourth opening 504 are connected by a channel. While the third aperture 503 is for interfacing with the heat pipe opening 22a and the fourth aperture 504 is for interfacing with the heat pipe opening 23a, thereby enabling the heat pipe in which the heat pipe opening 22a is located to communicate with the heat pipe in which the heat pipe opening 23a is located. The first opening 501 and the second opening 502 are communicated by a channel. While the first opening 501 is for interfacing with the outlet port 432 of the coil 40 and the second opening 502 is for interfacing with the heat conductive pipe opening 21a, thereby enabling the coil 40 to communicate with the heat conductive pipe 20.
As shown in fig. 14-16, the left end cap 60, which is located on the first end 102 of the heat exchange body, is die cast from an aluminum alloy into a unitary structure having a plurality of communication tubes. The left end cap 60 includes an end cap body and four openings, i.e., a seventh opening 601, an eighth opening 602, a ninth opening 603, and a tenth opening 604, formed in the end cap body. Two channels are also provided in the end cap body of the left end cap 50 for communicating the two openings. As shown in fig. 16, the ninth opening 603 and the tenth opening 604 communicate with each other through the passage 61. And the ninth aperture 603 is for interfacing with the heat pipe opening 22b, and the tenth aperture 604 is for interfacing with the heat pipe opening 21b, thereby achieving communication between the heat pipe in which the heat pipe opening 21b is located and the heat pipe in which the heat pipe opening 22b is located.
Similarly, the seventh opening 601 and the eighth opening 602 are communicated through a channel. While the seventh aperture 601 is for interfacing with the heat conductive pipe opening 24b and the eighth aperture 602 is for interfacing with the heat conductive pipe opening 23b, thereby achieving communication of the heat conductive pipe where the heat conductive pipe opening 22b is located with the heat conductive pipe where the heat conductive pipe opening 24b is located.
Communication between each heat pipe, and between the heat pipes and the coil pipe, is achieved through the left end cap 60 and the right end cap 50. And because the left end cover 60 and the right end cover 50 are both formed by aluminum alloy through integral die casting, the strength of the communicating pipe is enhanced, and the installation is convenient.
In addition, since the left end cover 60 and the right end cover 50 are formed with an opening on one side of each channel during the die casting process, in order to ensure the sealing performance of the waterway system, a plug 90 is further provided in this embodiment to plug the waterway system.
Furthermore, solder is put on each interface, and the interfaces are sealed and welded by a brazing method so as to strengthen the connection strength of the interfaces. The internal and external surfaces of the heat exchange main body, the left end cover 60, the right end cover 50, the water inlet pipe 70 and the water outlet pipe 80 are all treated by chemical nickel plating surface treatment technology, so that the internal and external surfaces of the parts have good anti-corrosion effect and long service life.
In summary, compared with the water heater in the prior art, the water heater of the invention has the following beneficial effects:
(1) the heat exchanger main body is die-cast by adopting integral aluminum alloy, so that the strength is high; the fins and the water channels conduct heat integrally, so that the heat conduction efficiency is improved;
(2) the communicating pipe of the heat conduction pipe in the communicating heat exchanger main body adopts an integrated structure formed by aluminum alloy die-casting, namely the left end cover and the right end cover, so that the strength of the communicating pipe is enhanced, and the installation is facilitated.
(3) The structural design of each part of the water heater can treat the inner surface and the outer surface of the aluminum alloy, so that the service life can be prolonged, the water quality is pollution-free and more sanitary, and the water heater is better for the body of a user;
(4) the aluminum alloy die-casting process can greatly improve the production efficiency and reduce the cost.
Correspondingly, the invention also provides a manufacturing method of the water heater heat exchanger. As shown in fig. 17, the manufacturing method of the heat exchanger of the water heater comprises the following steps:
step S110, according to a preset die-casting die of the heat exchange main body, adopting aluminum alloy to integrally form the heat exchange main body with a combustion chamber, a heat conduction pipe, a heat exchange fin and a coiled pipe in a die-casting mode;
step S120, providing a communicating pipe, communicating the coiled pipe with the heat conduction pipes through communication, and communicating the heat conduction pipes;
step S130, providing a water inlet pipe and a water outlet pipe, communicating the water inlet pipe with the coil pipe, and communicating the water outlet pipe with the heat conduction pipe to form a waterway system.
It can be understood that the heat exchange body may not be provided with the coil pipe, but directly communicate with a heat conduction pipe at one end of the heat exchange body through the water inlet pipe to form a water path system.
Referring to fig. 18, fig. 18 shows a second embodiment of a method of manufacturing a heat exchanger for a water heater according to the present invention. The manufacturing method of the water heater heat exchanger of the embodiment can comprise the following steps:
step S210, according to a preset heat exchange main body die, adopting aluminum alloy to integrally die-cast and form a heat exchange main body with a combustion chamber, a heat conduction pipe, heat exchange fins and a coiled pipe;
step S220, according to a preset end cover die-casting die, a left end cover and a right end cover which are provided with communicating pipes are integrally formed by die-casting aluminum alloy, the left end cover is installed at one end of a heat exchange main body, and the right end cover is installed at the other end of the heat exchange main body, so that the coiled pipe is communicated with heat conducting pipes which are communicated with each other;
step S230, providing a water inlet pipe and a water outlet pipe, and communicating the water inlet pipe with the coil pipe and the water outlet pipe with the heat pipe to form a waterway system.
Further, since the heat exchange body, the left end cover 60 and the right end cover 50 are formed with openings on the coiled tube 40 in the heat exchange body and one side of each channel in the left end cover 60 and the right end cover 50 are also formed with openings in the die casting process, in order to ensure the sealing performance of the waterway system, a plug 90 is further disposed in this embodiment to plug the waterway system. Namely, the manufacturing process of the water heater can also comprise the following steps: plugs are provided and the openings in the coiled tubes 40 of the heat exchange body and the openings in the left end cap 60 and the right end cap 50 are plugged by the plugs.
Furthermore, in order to strengthen the connection strength of each interface, the invention puts solder on each interface and uses a brazing method to seal and weld. Namely, the manufacturing process of the water heater can also comprise the following steps: and the joints of the communicating pipes among the heat conduction pipes, the joints of the coiled pipes and the communicating pipes, the joints of the water inlet pipes and the coiled pipes, and the joints of the water outlet pipes and the heat conduction pipes are all subjected to sealing welding treatment.
Furthermore, because the heat exchanger is made of aluminum alloy materials, the heat exchanger can perform anticorrosion treatment on the inner surface and the outer surface of the heat exchanger in order to ensure that the anticorrosion effect of the inner surface and the outer surface of parts is good. Namely, the manufacturing process of the water heater can also comprise the following steps: the internal and external surfaces of the heat exchange body and the end cover are subjected to chemical nickel plating surface treatment, so that the internal and external surfaces of the heat exchanger have good corrosion prevention effect and long service life.
In summary, compared with the water heater in the prior art, the water heater of the invention has the following beneficial effects:
(1) the heat exchanger main body is die-cast by adopting integral aluminum alloy, so that the strength is high; the fins and the water channels conduct heat integrally, so that the heat conduction efficiency is improved;
(2) the communicating pipe of the heat conduction pipe in the communicating heat exchanger main body adopts an integrated structure formed by aluminum alloy die-casting, namely the left end cover and the right end cover, so that the strength of the communicating pipe is enhanced, and the installation is facilitated.
(3) The structural design of each part of the water heater can treat the inner surface and the outer surface of the aluminum alloy, so that the service life can be prolonged, the water quality is pollution-free and more sanitary, and the water heater is better for the body of a user;
(4) the aluminum alloy die-casting process can greatly improve the production efficiency and reduce the cost.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structures or flow transformations made by the present specification and drawings, or applied directly or indirectly to other related arts, are included in the scope of the present invention.
Claims (12)
1. A water heater heat exchanger is characterized by comprising a heat exchange main body, a combustion chamber, a heat conduction pipe and heat exchange fins, wherein the combustion chamber, the heat conduction pipe and the heat exchange fins are integrally formed by aluminum alloy through die casting; the heat exchange fins are arranged above the combustion chamber; the heat conduction pipes are at least three, and each heat conduction pipe protrudes out of the first end and the second end of the heat exchange main body; the water heater heat exchanger also comprises a water inlet pipe, a water outlet pipe, a first group of communicating pipes and a second group of communicating pipes, wherein the first group of communicating pipes and the water inlet pipe are positioned at the first end of the heat exchange main body; the second group of communicating pipes and the water outlet pipe are positioned at the second end of the heat exchange body, the water outlet pipe is used for communicating with a heat conduction pipe which protrudes out of the first end of the heat exchange body, and the second group of communicating pipes is used for communicating the rest heat conduction pipes which protrude out of the first end of the heat exchange body;
the outside of the combustion chamber is also provided with a coiled pipe which is coiled on the combustion chamber and is coiled on the side edge of the combustion chamber by the bottom of the combustion chamber; one end of the coiled pipe, which is far away from the heat exchange fins, is communicated with the water inlet pipe, and one end of the coiled pipe, which is close to the heat exchange fins, is communicated with a heat conduction pipe, which protrudes out of the second end of the heat exchange body, through a second group of communicating pipes.
2. The water heater heat exchanger as recited in claim 1 wherein the combustion chamber, heat pipe, and heat exchange fins are all integrally die cast from an aluminum alloy to form the heat exchange body.
3. The water heater heat exchanger as claimed in claim 2, wherein the coil pipe is integrally die-cast from an aluminum alloy together with the combustion chamber, the heat conductive pipe, and the heat exchange fin to form the heat exchange body; openings are further formed in the positions, close to the first end and the second end of the heat exchange main body, of the coiled pipe; the opening is blocked by a plug.
4. The water heater heat exchanger as recited in any one of claims 1-3 wherein the communication tube at the first end of the heat exchange body is integrally die cast from aluminum alloy to form a right end cap and the communication tube at the second end of the heat exchange body is integrally die cast from aluminum alloy to form a left end cap.
5. The water heater heat exchanger as recited in claim 4 wherein the left and right end caps have openings therein and the openings are closed by plugs.
6. The water heater heat exchanger as recited in any one of claims 1 to 3, wherein the inner and outer surfaces of the heat exchange body and the communicating tube are surface treated with electroless nickel plating.
7. The water heater heat exchanger as claimed in any one of claims 1 to 3, wherein the heat conductive pipe has a cross-sectional shape selected from the group consisting of circular, oval, oblate, rectangular, and square.
8. A manufacturing method of a heat exchanger of a water heater is characterized by comprising the following steps:
according to a preset die-casting die for the heat exchange main body, the heat exchange main body with a combustion chamber, heat conduction pipes and heat exchange fins is integrally formed by die-casting aluminum alloy, wherein the number of the heat conduction pipes is at least three, and each heat conduction pipe protrudes out of a first end and a second end of the heat exchange main body in a protruding mode;
providing a water inlet pipe, a water outlet pipe and two groups of communicating pipes, wherein the first group of communicating pipes and the water inlet pipe are positioned at the first end of the heat exchange main body, the water inlet pipe is used for communicating with a heat conduction pipe which protrudes out of the first end of the heat exchange main body, and the first group of communicating pipes are used for communicating other heat conduction pipes which protrude out of the first end of the heat exchange main body; the second group of communicating pipes and the water outlet pipe are positioned at the second end of the heat exchange body, the water outlet pipe is used for communicating with a heat conduction pipe which protrudes out of the first end of the heat exchange body, and the second group of communicating pipes is used for communicating the rest heat conduction pipes which protrude out of the first end of the heat exchange body;
the outside of the combustion chamber is also provided with a coiled pipe which is coiled on the combustion chamber and is coiled on the side edge of the combustion chamber by the bottom of the combustion chamber; one end of the coiled pipe, which is far away from the heat exchange fins, is communicated with the water inlet pipe, and one end of the coiled pipe, which is close to the heat exchange fins, is communicated with a heat conduction pipe, which protrudes out of the second end of the heat exchange body, through a second group of communicating pipes.
9. The method for manufacturing the heat exchanger of the water heater according to claim 8, wherein the communicating pipe at the first end of the heat exchange main body is formed into an integral structure by aluminum alloy die-casting; the communicating pipe positioned at the second end of the heat exchange main body is of an integrated structure formed by aluminum alloy die-casting.
10. The method of manufacturing a water heater heat exchanger as recited in claim 9 further comprising:
and the inner and outer surfaces of the heat exchange main body and the communicating pipe are subjected to chemical nickel plating surface treatment.
11. The method for manufacturing the heat exchanger of the water heater according to claim 8, wherein a coil pipe is further arranged on the periphery of the combustion chamber, and the coil pipe, the combustion chamber, the heat conduction pipe and the heat exchange fin are integrally formed by aluminum alloy through die-casting to form the heat exchange body.
12. The method of manufacturing a water heater heat exchanger as recited in claim 11 further comprising:
and providing a plug for plugging an opening on the coiled pipe of the heat exchange main body.
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| CN104713234B true CN104713234B (en) | 2018-09-28 |
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| CN108662782A (en) * | 2017-03-30 | 2018-10-16 | 芜湖美的厨卫电器制造有限公司 | Combustion heat-exchange system and gas heater with it |
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| US7582253B2 (en) * | 2001-09-19 | 2009-09-01 | Amerifab, Inc. | Heat exchanger system used in steel making |
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| JP2006207901A (en) * | 2005-01-26 | 2006-08-10 | Noritz Corp | Hot water apparatus |
| CN201314805Y (en) * | 2008-12-18 | 2009-09-23 | 王文贺 | Tube tape type finned aluminum alloy heat exchanger |
| CN201434510Y (en) * | 2009-06-01 | 2010-03-31 | 广东万和新电气股份有限公司 | Sensible heat exchanger of fuel gas water heater |
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Effective date of registration: 20221101 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East Wuhu economic and Technological Development Zone, Wuhu, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |