CN209945111U - Welding structure of heat exchanger of gas water heater - Google Patents
Welding structure of heat exchanger of gas water heater Download PDFInfo
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- CN209945111U CN209945111U CN201920434132.3U CN201920434132U CN209945111U CN 209945111 U CN209945111 U CN 209945111U CN 201920434132 U CN201920434132 U CN 201920434132U CN 209945111 U CN209945111 U CN 209945111U
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Abstract
The utility model relates to a welding structure of a heat exchanger of a gas water heater, which comprises fins, a bent pipe and at least two straight pipes, wherein the at least two straight pipes are arranged on the fins in a penetrating way, and the bent pipe is connected between every two adjacent straight pipes to form a pipe assembly with a water inlet and a water outlet; the first welding ring is arranged between each straight pipe and each bent pipe and welded into a whole, and the first welding rod is arranged between each straight pipe and each fin along the axial direction of the straight pipe and welded into a whole; the volume of the first welding rod is larger than that of the first welding ring, and the first welding rod is of a hollow structure. The inner surface and the outer surface of the first welding rod can be used as heating surfaces, so that the heating surface area of the first welding rod is increased, the heat absorption rate is accelerated, the heating time required for melting the first welding rod with larger volume and the first welding ring with smaller volume is equivalent, the heating time is reduced, the production efficiency is improved, the resource waste is reduced, and the formation of a 'welding tumor shape' is reduced.
Description
Technical Field
The utility model relates to a welded structure technical field especially relates to a welded structure of gas heater's heat exchanger.
Background
The heat exchanger of the gas water heater comprises a shell, fins, a straight pipe and an elbow, wherein a first welding ring is arranged between the straight pipe and the elbow, welding rods are arranged between the straight pipe and the fins and between the straight pipe and the shell, and the straight pipe and the fins and the straight pipe and the shell are heated in the same welding furnace during welding, so that the heat exchanger is welded.
In the process of welding the heat exchanger, because the solders with different specifications exist, the heat required by the solder with larger volume is more, and the heat required by the solder with smaller volume is less. When the solder is heated in the same welding furnace, the solder with larger volume does not start to melt, the solder with smaller volume melts early, and in order to ensure that the solder with larger volume melts completely, the heating time is longer, and the production efficiency is lower; when the solder with larger volume is completely melted, the solder with smaller volume is in a liquid state for a longer time, so that part of liquid metal flows out of the joint, and the waste of resources is caused; after the liquid metal flows out of the joint and is solidified, the liquid metal is easy to form 'welding beading' on the surface of the heat exchanger, the appearance is influenced, the welding beading can interfere with the assembly of other parts, the welding beading needs to be polished to be assembled with other parts, and the production efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a welded structure of gas heater's heat exchanger, its outward appearance that can improve production efficiency, reduce the wasting of resources and improve the heat exchanger effectively.
The technical problem is solved by the following technical scheme:
a welding structure of a heat exchanger of a gas water heater comprises fins, bent pipes and at least two straight pipes, wherein the at least two straight pipes penetrate through the fins, and the bent pipe is connected between every two adjacent straight pipes to form a pipe assembly with a water inlet and a water outlet;
the first welding ring is arranged between each straight pipe and each bent pipe and welded into a whole, and the first welding rod is arranged between each straight pipe and each fin along the axial direction of the straight pipes and welded into a whole;
the volume of the first welding rod is larger than that of the first welding ring, and the first welding rod is of a hollow structure.
In one embodiment, the first welding ring is sleeved outside the bent pipe, the bent pipe is sleeved inside the straight pipe, and the first welding ring abuts against the end face of the straight pipe.
In one embodiment, the first welding ring is formed by surrounding welding wires with the diameter of 1.45mm-1.55mm, and the inner diameter of the first welding ring is 12.35mm-12.45 mm.
In one embodiment, the first electrode has the following dimensions: the external diameter is 2.55mm-2.65mm, the internal diameter is 0.95mm-1.05mm, and the length is 158.5mm-159.5 mm.
In one embodiment, the welding device further comprises a shell and a second welding rod, the fin is arranged in the shell, the straight pipe penetrates through the shell and penetrates through the fin, and the second welding rod is arranged between the fin and the shell along the axial direction of the straight pipe and welded into a whole;
the volume of the second welding rod is smaller than that of the first welding rod and larger than that of the first welding ring, and the second welding rod is of a hollow structure.
In one embodiment, the second electrode has the following dimensions: the external diameter is 2.55mm-2.65mm, the internal diameter is 0.95mm-1.05mm, and the length is 77.5mm-78.5 mm.
In one embodiment, the welding device further comprises a third welding rod and a water inlet pipe communicated with the water inlet, the water inlet pipe is arranged around the outer shell, and the third welding rod is arranged between the water inlet pipe and the outer shell and welded into a whole;
the volume of the third welding rod is smaller than that of the second welding rod and larger than that of the first welding ring, and the third welding rod is of a hollow structure.
In one embodiment, the dimensions of the third electrode are: the outer diameter is 2.05mm-2.15mm, the inner diameter is 0.95mm-1.05mm, and the length is 47.5mm-48.5 mm.
In one embodiment, the water outlet pipe is communicated with the water outlet, the water outlet connector is connected with the water outlet pipe, and the second welding ring is arranged between the water outlet connector and the water outlet pipe and welded into a whole;
wherein the volume of the second weld ring is less than the volume of the first weld ring.
In one embodiment, the second welding ring is formed by welding wires with the diameter of 1.45mm-1.55mm in a surrounding mode, and the inner diameter of the second welding ring is 11.75mm-11.85 mm.
Welding structure of gas heater's heat exchanger, compare produced beneficial effect with the background art:
because the first welding rod is of a hollow structure, when the welding structure of the heat exchanger of the gas water heater is placed in the welding furnace, the inner surface and the outer surface of the first welding rod can be used as heating surfaces, so that the heating surface area of the first welding rod is increased, the heat absorption rate is accelerated, the heating time required for melting the first welding rod with a larger volume is equivalent to that required for melting the first welding ring with a smaller volume, the heating time is reduced, the production efficiency is improved, the resource waste is reduced, the formation of a 'welding tumor shape' is reduced, and the appearance is improved.
Drawings
Fig. 1 is a front view of a welded structure of a heat exchanger of a gas water heater according to an embodiment of the present invention;
FIG. 2 is a structural view of a first welding rod or a second welding rod or a third welding rod used in a welding structure of a heat exchanger of the gas water heater shown in FIG. 1;
fig. 3 is a side view of a welded structure of a heat exchanger of the gas water heater shown in fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of the present invention provides a welding structure 100 for a heat exchanger of a gas water heater, including a fin 10, an elbow 20 and at least two straight pipes (not shown), wherein the at least two straight pipes are all disposed on the fin 10, the elbow 20 is connected between every two adjacent straight pipes, and the straight pipes are connected with the elbow 20 to form a pipe assembly having a water inlet and a water outlet. In this way, cold water enters the tube assembly from the water inlet of the tube assembly, and exchanges heat with the combustion gas when passing through the straight tube connected to the fin 10, so that the cold water is heated to become hot water and is discharged from the water outlet of the tube assembly.
Specifically, the number of the fins 10 is at least two, the at least two fins 10 are sequentially arranged along the axial direction of the straight pipes and are mutually abutted through abutting pieces, the at least two straight pipes are arranged in parallel at intervals, and the at least two straight pipes are arranged on the at least two fins 10 in a penetrating mode.
In one embodiment, the welding structure 100 of the heat exchanger of the gas water heater further includes a first welding ring 30, the first welding ring 30 is disposed between the straight pipe and the bent pipe 20, and the straight pipe, the bent pipe 20, and the first welding ring 30 are welded together.
It should be noted that the first welding ring 30 is disposed between the straight pipe and the bent pipe 20, the first welding ring 30 may be disposed outside the bent pipe 20, the bent pipe 20 is disposed inside the straight pipe, the first welding ring 30 abuts against an end surface of the straight pipe, the first welding ring 30 may be disposed outside the straight pipe, the straight pipe is disposed inside the bent pipe 20, the first welding ring 30 abuts against an end surface of the bent pipe 20, an inner surface of the first welding ring 30 may abut against one of the straight pipe and the bent pipe 20, and an outer surface of the first welding ring 30 abuts against the other of the bent pipe 20 and the straight pipe.
In this embodiment, the first welding ring 30 is sleeved outside the bent pipe 20, the bent pipe 20 is sleeved inside the straight pipe, and the first welding ring 30 abuts against the end surface of the straight pipe.
Specifically, the first welding ring 30 is formed by welding wires with the diameter of 1.45mm-1.55mm in a surrounding mode, and the inner diameter of the first welding ring 30 is 12.35mm-12.45 mm. More specifically, the first welding ring 30 is surrounded by a welding wire having a diameter of 1.5mm, and the inner diameter of the first welding ring 30 is 12.4 mm.
Continuing to refer to fig. 1, in an embodiment, the welding structure 100 of the heat exchanger of the gas water heater further includes first welding rods 40, the first welding rods 40 are disposed between each straight pipe and all fins 10 along the axial direction of the straight pipe, that is, the number of the first welding rods 40 is equal to the number of the straight pipes, the length of the first welding rods 40 is equal to the sum of the lengths of all fins 10 along the axial direction of the straight pipe, and the first welding rods 40, the straight pipe and the fins 10 are welded together.
Referring to fig. 2, specifically, the volume of the first welding rod 40 is larger than that of the first welding ring 30, and the first welding rod 40 has a hollow structure.
Because the volume of the first welding rod 40 is larger than that of the first welding ring 30, the first welding rod 40 can meet the requirement of the amount of welding flux needed for welding between the straight pipe and the fin 10; and because the first welding rod 40 is a hollow structure, when the welding structure 100 of the heat exchanger of the gas water heater is placed in the welding furnace, the inner surface and the outer surface of the first welding rod 40 can be used as heating surfaces, so that the heating surface area of the first welding rod 40 is increased, and the rate of absorbing heat is accelerated, so that the heating time required for melting the first welding rod 40 with a larger volume and the first welding ring 30 with a smaller volume is equivalent, the heating time is reduced, the production efficiency is improved, the resource waste is reduced, the formation of a 'welding tumor shape' is reduced, and the appearance of the heat exchanger is improved.
Specifically, the first welding rod 40 has the dimensions: the external diameter is 2.55mm-2.65mm, the internal diameter is 0.95mm-1.05mm, and the length is 158.5mm-159.5 mm. More specifically, the first welding rod 40 has the dimensions: an outer diameter of 2.6mm, an inner diameter of 1mm and a length of 159 mm.
With continued reference to fig. 1, in one embodiment, the welded structure 100 of the heat exchanger of the gas water heater further includes a housing 50, the fins 10 are disposed in the housing 50, and the straight pipe passes through the housing 50 and penetrates the fins 10. Specifically, the housing 50 has openings at the top and bottom to facilitate the entry of combusted gases into the housing 50 from the opening at the bottom and to facilitate the exit of flue gases formed after combustion from the opening at the top.
The welding structure 100 of the heat exchanger of the gas water heater further comprises a second welding rod 60, the second welding rod 60 is arranged between the fin 10 and the outer shell 50 along the axial direction of the straight pipe, and the second welding rod 60 and the fin 10 are welded into a whole by the outer shell 50. Specifically, the volume of the second welding rod 60 is smaller than the volume of the first welding rod 40 and larger than the volume of the first welding ring 30, and the first welding rod 40 can meet the requirement of the amount of solder required for welding between the shell 50 and the fin 10.
The second welding rod 60 is of a hollow structure, so that the heating surface area of the second welding rod 60 is increased, the heat absorption rate is accelerated, the heating time for melting the first welding ring 30, the first welding rod 40 and the second welding rod 60 is equal, the heating time is reduced, the production efficiency is improved, the resource waste is reduced, the formation of a welding tumor shape is reduced, and the appearance of the heat exchanger is improved.
In one embodiment, the second welding bars 60 are four, wherein two second welding bars 60 are located between one end of the fin 10 and the outer shell 50, and the other two second welding bars 60 are located between the other end of the fin 10 and the outer shell 50. It is to be understood that in other embodiments, the number of second welding electrodes 60 is not limited.
Further, the dimensions of the second welding rod 60 are: the external diameter is 2.55mm-2.65mm, the internal diameter is 0.95mm-1.05mm, and the length is 77.5mm-78.5 mm. Specifically, the dimensions of the second welding rod 60 are: the outer diameter is 2.6mm, the inner diameter is 1mm, and the length is 78 mm.
In one embodiment, the welded structure 100 of the heat exchanger of the gas water heater further includes a water inlet pipe 70 communicating with the water inlet of the pipe assembly, the water inlet pipe 70 being circumferentially disposed outside the outer shell 50. Cold water enters from the water inlet pipe 70, reaches the pipe assembly, exchanges heat with the burning gas to form hot water, and is discharged from the water outlet of the pipe assembly. Specifically, the water inlet is formed on one of the straight pipes of the pipe assembly, the bent pipe 20 is connected between the straight pipe having the water inlet and the water inlet pipe 70, and the first welding ring 30 is disposed between the bent pipe 20 and the water inlet pipe 70.
The welding structure 100 of the heat exchanger of the gas water heater further comprises a third welding rod 80, the third welding rod 80 is arranged between the water inlet pipe 70 and the outer shell 50, and the third welding rod 80 and the outer shell 50 are welded into a whole by the water inlet pipe 70. Specifically, the volume of the third welding rod 80 is smaller than the volume of the second welding rod 60 is larger than the volume of the first welding ring 30 to meet the requirement of the required amount of solder between the water inlet pipe 70 and the outer shell 50.
The third welding rod 80 is of a hollow structure, so that the heating area of the third welding rod 80 is increased, the rate of absorbing heat is accelerated, the heating time for melting the first welding ring 30, the first welding rod 40, the second welding rod 60 and the third welding rod 80 is equivalent, the heating time is shortened, the production efficiency is improved, the waste of resources is reduced, the formation of a welding tumor shape is reduced, and the appearance of the heat exchanger is improved.
In one embodiment, the third welding wires 80 are six, wherein three of the third welding wires 80 are disposed between one end of the outer shell 50 and the water inlet pipe 70, and wherein another three of the third welding wires 80 are disposed between the opposite end of the outer shell 50 and the water inlet pipe 70.
Further, the dimensions of the third welding rod 80 are: the outer diameter is 2.05mm-2.15mm, the inner diameter is 0.95mm-1.05mm, and the length is 47.5mm-48.5 mm. Specifically, the dimensions of the third welding rod 80 are: the outer diameter is 2.1mm, the inner diameter is 1mm, and the length is 48 mm.
In one embodiment, the welding structure 100 of the heat exchanger of the gas water heater further includes a water inlet joint (not shown) and a second welding ring 120, the water inlet joint is connected to the water inlet pipe 70, the second welding ring 120 is disposed between the water inlet joint and the water inlet pipe 70, and the second welding ring 120, the water inlet joint and the water inlet pipe 70 are welded together.
It should be noted that the second welding ring 120 is disposed between the water inlet joint and the water inlet pipe 70, the second welding ring 120 may be sleeved outside the water inlet joint, the water inlet joint is sleeved inside the water inlet pipe 70, the second welding ring 120 abuts against the end surface of the water inlet pipe 70, the second welding ring 120 may also be sleeved outside the water inlet pipe 70, the water inlet pipe 70 is sleeved inside the water inlet joint, the second welding abuts against the end surface of the water inlet joint, the inner surface of the second welding ring 120 may abut against one of the water inlet joint and the water inlet pipe 70, and the outer surface abuts against the other of the water inlet joint and the water inlet pipe 70.
In this embodiment, the second welding ring 120 is sleeved outside the water inlet joint, the water inlet joint is sleeved inside the water inlet pipe 70, and the second welding ring 120 abuts against the end surface of the water inlet pipe 70.
Specifically, the volume of the second solder ring 120 is less than the volume of the first solder ring 30 to meet the amount of solder required for soldering between the water inlet fitting and the water inlet pipe 70.
Further, the second welding ring 120 is formed by welding wires with the diameter of 1.45mm to 1.55mm in a surrounding manner, and the inner diameter of the first welding ring 30 is 11.75mm to 11.85 mm. Specifically, the second welding ring 120 is surrounded by a welding wire having a diameter of 1.5mm, and the first welding ring 30 has an inner diameter of 11.8 mm.
Referring to fig. 3, in another embodiment, the welding structure 100 of the heat exchanger of the gas water heater further includes a water outlet pipe 90 and a water outlet connector 110, the water outlet pipe 90 is communicated with the water outlet, the water outlet connector 110 is connected to the water outlet pipe 90, and the second welding ring 120 is disposed between the water outlet connector 110 and the water outlet pipe 90 and welded together.
The connection among the water outlet pipe 90, the water outlet joint 110 and the second welding ring 120 refers to the connection among the water inlet pipe 70, the water inlet joint and the second welding ring 120, and is not described in detail herein.
Further, specifically, the water outlet is formed on one of the straight pipes of the pipe assembly, an elbow pipe 20 is connected between the straight pipe having the water outlet and the water outlet pipe 90, and a first welding ring 30 is disposed between the elbow pipe 20 and the water outlet pipe 90.
Specifically, the straight tube, the bent tube 20, the water inlet tube 70 and the water outlet tube 90 are all made of copper tubes.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A welding structure (100) of a heat exchanger of a gas water heater is characterized by comprising fins (10), bent pipes (20) and at least two straight pipes, wherein the at least two straight pipes penetrate through the fins (10), and the bent pipe (20) is connected between every two adjacent straight pipes to form a pipe assembly with a water inlet and a water outlet;
the welding device further comprises a first welding ring (30) and a first welding rod (40), wherein the first welding ring (30) is arranged between each straight pipe and each bent pipe (20) and welded into a whole, and the first welding rod (40) is arranged between each straight pipe and each fin (10) along the axial direction of the straight pipes and welded into a whole;
wherein the volume of the first welding rod (40) is larger than that of the first welding ring (30), and the first welding rod (40) is of a hollow structure.
2. The welding structure (100) of the heat exchanger of the gas water heater according to claim 1, wherein the first welding ring (30) is sleeved outside the bent pipe (20), the bent pipe (20) is sleeved inside the straight pipe, and the first welding ring (30) abuts against the end surface of the straight pipe.
3. The welding structure (100) of the heat exchanger of the gas water heater according to claim 2, characterized in that the first welding ring (30) is surrounded by a welding wire with a diameter of 1.45mm-1.55mm, and the inner diameter of the first welding ring (30) is 12.35mm-12.45 mm.
4. Welding structure (100) of a heat exchanger of a gas water heater according to claim 1, characterized in that said first welding rod (40) has dimensions: the external diameter is 2.55mm-2.65mm, the internal diameter is 0.95mm-1.05mm, and the length is 158.5mm-159.5 mm.
5. The welding structure (100) of the heat exchanger of the gas water heater according to claim 1, further comprising a housing (50) and a second welding rod (60), wherein the fin (10) is arranged in the housing (50), the straight tube penetrates through the housing (50) and is arranged through the fin (10), and the second welding rod (60) is arranged between the fin (10) and the housing (50) along the axial direction of the straight tube and is welded into a whole;
wherein the volume of the second welding rod (60) is smaller than that of the first welding rod (40) and larger than that of the first welding ring (30), and the second welding rod (60) is of a hollow structure.
6. Welding structure (100) of a heat exchanger of a gas water heater according to claim 5, characterized in that said second welding rod (60) has dimensions: the external diameter is 2.55mm-2.65mm, the internal diameter is 0.95mm-1.05mm, and the length is 77.5mm-78.5 mm.
7. The welding structure (100) of the heat exchanger of the gas water heater as claimed in claim 5, further comprising a third welding rod (80) and a water inlet pipe (70) communicated with the water inlet, wherein the water inlet pipe (70) is circumferentially arranged outside the outer shell (50), the third welding rod (80) is arranged between the water inlet pipe (70) and the outer shell (50) and welded into a whole;
wherein the volume of the third welding rod (80) is smaller than that of the second welding rod (60) and larger than that of the first welding ring (30), and the third welding rod (80) is of a hollow structure.
8. Welding structure (100) of a heat exchanger of a gas water heater according to claim 7, characterized in that said third welding rod (80) has dimensions: the outer diameter is 2.05mm-2.15mm, the inner diameter is 0.95mm-1.05mm, and the length is 47.5mm-48.5 mm.
9. The welding structure (100) of the heat exchanger of the gas water heater according to claim 1, further comprising a water outlet pipe (90), a water outlet connector (110) and a second welding ring (120), wherein the water outlet pipe (90) is communicated with the water outlet, the water outlet connector (110) is connected with the water outlet pipe (90), the second welding ring (120) is arranged between the water outlet connector (110) and the water outlet pipe (90) and welded into a whole;
wherein the volume of the second weld ring (120) is less than the volume of the first weld ring (30).
10. The welding structure (100) of the heat exchanger of the gas water heater according to claim 9, wherein the second welding ring (120) is surrounded by a welding wire having a diameter of 1.45mm-1.55mm, and the inner diameter of the second welding ring (120) is 11.75mm-11.85 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920434132.3U CN209945111U (en) | 2019-04-02 | 2019-04-02 | Welding structure of heat exchanger of gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920434132.3U CN209945111U (en) | 2019-04-02 | 2019-04-02 | Welding structure of heat exchanger of gas water heater |
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| CN209945111U true CN209945111U (en) | 2020-01-14 |
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| CN201920434132.3U Active CN209945111U (en) | 2019-04-02 | 2019-04-02 | Welding structure of heat exchanger of gas water heater |
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