Heating radiator convenient to weld

Abstract

The invention belongs to the technical field of heating radiators, and particularly relates to a convenient-to-weld heating radiator which comprises a heating branch pipe, heating radiator heads are welded to the two ends of the heating branch pipe, and each heating radiator head comprises a cabin body mold piece and a cover plate mold piece; the cover plate mold piece is welded with the cabin body mold piece at the cabin opening of the cabin body mold piece, so that the heating radiator head is provided with a cavity for containing liquid; the side, close to the heating branch pipe, of the cover plate mold piece is provided with a piece head water outlet, and the piece head water outlet is communicated with the cavity of the heating radiator head. The fin head water outlet is inserted into the inner side of the heating branch pipe and is welded with the heating branch pipe; the front end and the rear end of the cabin body mold piece are each provided with a main pipe opening communicated with the heating radiator head cavity. According to the device, the radiator head water outlet is inserted into the inner wall of the heating branch pipe for welding, so that the length of a connecting area between the radiator head and the heating branch pipe is increased, and the radiator head water outlet and the heating branch pipe can be subjected to self-fusion welding by adopting a laser welding technology.

Description

Technical Field

[0001] The present invention relates to the technical field of radiators, and specifically to a radiator that is convenient for welding. Background Technique

[0002] The steel column radiator is composed of a radiator head and a heating pipe welded together, and its heat dissipation area can be increased by connecting multiple columns in parallel; compared with traditional radiators, the steel column radiator has the advantages of high thermal efficiency, uniform heat distribution, and outstanding cost performance.

[0003] In existing steel column radiators, the radiator head and the heating pipe are welded at the pipe orifice in a butt joint or semi-butt joint manner, which has the following disadvantages:

[0004] 1. After welding, the welded joint of the radiator head and the heating pipe needs to be polished. After polishing the butt joint, it is easy to cause the pipe wall thickness at the butt joint to be too thin, and water leakage will occur when the water pressure is too high.

[0005] 2. The radiator head and the heating pipe are not aligned. After welding, there is an included angle between the radiator head and the heating pipe. When polishing the welded joint, the weld at the included angle cannot be ground flat, forming a liquid residue area. When performing pretreatment, it is easy to leave cleaning liquid, which will affect the spraying. Poor spraying effect will lead to a lower service life of the radiator.

[0006] 3. In the prior art, gas shielded welding or argon arc welding is required for welding the radiator head and the heating pipe. When using welding materials, it is easy to have water leakage due to insufficient penetration at the welded part; when not using welding materials, problems such as concave welding parts and insecure welding points are likely to occur, and these problems are likely to cause the welded part to collapse and leak water.

[0007] 4. After filling the welding material in gas shielded welding or argon arc welding, inert gas needs to be used for protection during welding, which results in a slow welding speed, wide and high weld beads, large weld bead size, difficult to polish, high polishing cost, and large amount of dust, polluting the environment.

[0008] Therefore, we propose a radiator to reduce the welding difficulty between the radiator head and the heating pipe, as well as the post-welding treatment difficulty. Summary of the Invention

[0009] The purpose of the present invention is to provide a radiator that is convenient for welding to solve the technical problems raised in the above background technique.

[0010] To achieve the above purpose, the present invention provides the following technical solution: A radiator that is convenient for welding, including a heating pipe, and radiator heads are welded at both ends of the heating pipe. The radiator head includes a cabin diaphragm and a cover diaphragm; the cover diaphragm is welded to the cabin diaphragm at the cabin opening of the cabin diaphragm, so that the radiator head has a cavity for holding liquid.

[0011] On one side of the cover plate diaphragm close to the heating branch pipe, there is a header outlet, and the header outlet communicates with the cavity of the radiator header; the header outlet is inserted into the inner side of the heating branch pipe and welded to the heating branch pipe.

[0012] Main ports communicating with the radiator header cavity are provided at both the front and rear ends of the cabin diaphragm; a butt nut is welded inside the main port, and a double-headed hollow stud is screwed inside the butt nut. Adjacent radiator headers are detachably connected through the double-headed hollow stud and the butt nut.

[0013] Preferably, a positioning protrusion is provided on one side of the cabin diaphragm close to the cover plate diaphragm, and a clamping groove corresponding to the positioning protrusion is provided on the cover plate diaphragm.

[0014] Preferably, a support protrusion extending into the inner cavity of the cabin diaphragm is provided on one side of the cover plate diaphragm close to the cabin diaphragm.

[0015] Preferably, the outer end of the heating branch pipe is sleeved outside the header outlet and abuts against the cover plate diaphragm; the header outlet and the heating branch pipe are in interference fit.

[0016] Preferably, a material discharging groove is provided on the outer side of the header outlet, and a ring-shaped solder is placed outside the material discharging groove.

[0017] Preferably, a flow disturbing column is placed inside the heating branch pipe, a spiral flow disturbing fin is provided on the outer side of the flow disturbing column, and the outer end of the spiral flow disturbing fin fits against the inner wall of the heating branch pipe; both ends of the spiral flow disturbing fin are provided with top plates, and the two side top plates respectively abut against the header outlets of the two side radiator headers.

[0018] Preferably, the top plate includes a central rod fixedly connected to the flow disturbing column, umbrella ribs are hinged on the outer side of the central rod; a hollow sleeve is slidably sleeved on the outer side of the central rod, a connecting rod is hinged on the outer side of the hollow sleeve, and the other end of the connecting rod is hinged to the umbrella rib; a thrust spring is connected between the hollow sleeve and the central rod.

[0019] Preferably, an anti-slip sheet is connected to the other end of the umbrella rib corresponding to the water outlet end of the heating branch pipe, and the top plate at this end abuts against the outer edge of the header outlet through the anti-slip sheet; the top plate at the other end abuts against the inner wall of the header outlet through the outer wall of the umbrella rib.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1) The device inserts the water outlet of the header into the inner wall of the heating branch pipe for welding, increasing the length of the connection area between the header of the radiator and the heating branch pipe, enabling laser welding technology to be used for autogenous welding between the water outlet of the header and the heating branch pipe; after the heating branch pipe is connected to the water outlet of the header, the outer wall of the water outlet of the header will protrude, and the laser autogenous welding fuses and welds the protruding part of the water outlet of the header to the heating branch pipe together, without the need for filler metal and inert gas protection, thereby reducing the welding difficulty and increasing the welding speed.

[0022] 2) The connection between the water outlet of the header of the device and the heating branch pipe adopts an interference fit, so that the header of the radiator and the heating branch pipe will not form an angle after welding, avoiding the appearance of a liquid residue area, ensuring the smooth progress of spraying, and thus extending the service life of the radiator.

[0023] 3) The device inserts the water outlet of the header into the inner wall of the heating branch pipe for welding, and the wall thickness at the welding joint is the sum of the wall thicknesses of the heating branch pipe and the water outlet of the header. When grinding the weld seam at the connection, even if a part of the outer wall of the heating branch pipe is ground off, the wall thickness at the welding joint is still greater than the wall thickness of the heating branch pipe, thereby avoiding water leakage at the weld seam.

[0024] 4) The weld bead of the device is both firm and flat, facilitating the later grinding of the weld bead; the device generates less pollution during the production process, can achieve automated production, and can reduce the production cost.

[0025] 5) The device inserts the water outlet of the header into the inner wall of the heating branch pipe, facilitating the positioning of the water outlet of the header and the heating branch pipe and reducing the length of the water outlet of the header; enabling the water outlet of the header to be formed by stamping, without the need to use welding forming in traditional technology, not only reducing the production cost of the header of the radiator, but also reducing the welding difficulty between the cabin diaphragm and the cover diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the connection structure of multiple groups of steel column radiators of the present invention;

[0027] Figure 2 Schematic diagram of the structure of the steel column radiator of the present invention;

[0028] Figure 3 Schematic diagram of the structure of the header of the radiator of the present invention;

[0029] Figure 4 Exploded view of the structure of the header of the radiator of the present invention;

[0030] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at A in;

[0031] Figure 6Schematic diagram of the connection structure between the header outlet and the heating branch pipe in the embodiment of the present invention;

[0032] Figure 7 Schematic diagram of the connection structure between the header outlet and the heating branch pipe in the second embodiment of the present invention;

[0033] Figure 8 Schematic diagram of the sectional structure of the heating branch pipe of the present invention;

[0034] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the structure at position B in;

[0035] Figure 10 For the present invention Figure 8 Enlarged schematic diagram of the structure at position C in;

[0036] Figure 11 Schematic diagram of the structure of the radiator header in the prior art.

[0037] In the figure: 10 radiator header, 11 main pipe orifice, 12 header outlet, 13 cabin die, 14 cover die, 15 positioning protrusion, 16 clamping groove, 17 material discharge groove, 18 annular solder;

[0038] 20 heating branch pipe, 21 spoiler post, 22 spiral spoiler, 23 top plate; 231 umbrella rib, 232 thrust spring, 233 hollow sleeve, 234 connecting rod, 235 anti-slip sheet;

[0039] 31 docking nut, 32 double-headed hollow stud. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0042] Embodiment 1:

[0043] Please refer to Figures 1 - 10, the present invention provides a technical solution: a radiator convenient for welding, including a heating branch pipe 20 and a radiator head 10. Both ends of the heating branch pipe 20 are welded with the radiator head 10, and the heating branch pipe 20 and the two radiator heads 10 are formed into a whole by welding.

[0044] The radiator head 10 includes a cabin diaphragm 13 and a cover diaphragm 14. The cabin diaphragm 13 is formed by stamping technology. Then, the punch of a set of stamping dies is inserted into the inner side of the cabin diaphragm 13 from the hatch of the cabin diaphragm 13 to stamp out the main pipe openings 11. There are two main pipe openings 11, which are respectively arranged at the front and rear ends of the cabin diaphragm 13. The inner cavity of the cabin diaphragm can communicate with the outside through the main pipe openings 11; the two main pipe openings 11 are stamped in sequence through two stamping processes.

[0045] Subsequently, a butt joint nut 31 is welded to the main pipe opening 11. In order to increase the connection strength between the butt joint nut 31 and the main pipe opening 11, a butt joint nut 31 with a flange can be selected. During welding, the butt joint nut 31 is extended from the main pipe opening 11 from the inner side of the cabin diaphragm 13, and then the main pipe opening 11 and the butt joint nut 31 are welded. After welding, the welding slag at the welding place is ground off.

[0046] The cover diaphragm 14 is also formed by stamping. Then, the cover diaphragm 14 is welded to the hatch of the cabin diaphragm 13 to form the radiator head 10. The inner side of the radiator head 10 has a cavity for holding liquid; subsequently, through the grinding process, the residue at the welding place between the cabin diaphragm 13 and the cover diaphragm 14 is removed.

[0047] The outlet 12 of the header of the radiator head 10 is pushed into the inner side of the heating branch pipe 20 by the automatic pipe jacking and single-piece expanding technology, and then the outlet 12 of the header is welded to the heating branch pipe 20 by laser welding technology. For the connection between the heating branch pipe 20 and the outlet 12 of the header, the automatic pipe jacking and single-piece expanding technology is adopted to make an interference fit between the outlet 12 of the header and the heating branch pipe 20. The interference fit makes the connection between the outlet 12 of the header and the heating branch pipe 20 tight. Later, laser welding technology can be used for autogenous welding of the two. This welding method does not require filler metal and inert gas protection, and the weld bead is narrow and smooth, thus facilitating the grinding operation of the weld bead in the later stage. In addition, this device adopts the automatic pipe jacking and single-piece expanding technology. After the outlet 12 of the header is connected to the heating branch pipe 20, no angle will be formed between the heating branch pipe 20 and the radiator head 10, which can avoid liquid residue during pretreatment. During grinding, not only the weld bead between the heating branch pipe 20 and the outlet 12 of the header will be ground, but also the heating branch pipe 20 will be ground. At this time, the outlet 12 of the header is located inside the heating branch pipe 20. Even if a part of the heating branch pipe 20 is ground off, the remaining wall thickness of the outlet 12 of the header plus the wall thickness of the heating branch pipe 20 is still greater than the wall thickness standard of the conventional pipe, that is, the wall thickness of the heating branch pipe 20, ensuring the leak-proof reliability between the heating branch pipe 20 and the outlet 1 of the header.

[0048] One radiator head 10 has at least two header outlets 12, and each header outlet 12 is connected to a heating branch pipe 20. After welding one end of the radiator head 10, the radiator head 10 is welded to the other end of the heating branch pipe 20; the radiator head 10 and the heating branch pipe 20 are welded together to form a steel column radiator.

[0049] When stacking steel column radiators, first screw the double-headed hollow stud 32 onto the connection nut 31 of a group of steel column radiators, and then screw the other group of steel column radiators to be connected onto the double-headed hollow stud 32 on the previous group of steel column radiators to complete the stacking of the steel column radiators. In this way, the installer can stack them according to needs.

[0050] In the prior art, the stacking of steel column radiators is carried out by welding between the radiator heads 10. The user needs to select the number of radiator heads 10 required on the radiator in advance. When the radiator heads 10 do not meet the requirements, new radiators need to be replaced. In this application, through the cooperation of the double-headed hollow stud 32 and the docking nut 31, multiple radiator heads 10 are connected together, and the user can add them according to needs. When a certain radiator head 10 and the heating branch pipe 20 are damaged, the user can directly replace the damaged radiator head 10 and the heating branch pipe 20, thereby reducing the cost of replacing the radiator.

[0051] The cabin mold piece 13 is provided with a positioning protrusion 15 on one side close to the cover plate mold piece 14, and a snap-in groove 16 is provided on the cover plate mold piece 14; when the cabin mold piece 13 and the cover plate mold piece 14 are welded, the positioning protrusion 15 is snapped into the snap-in groove 16 to complete the alignment of the cabin mold piece 13 and the cover plate mold piece 14. The cover plate mold piece 14 is provided with a supporting protrusion extending into the inner cavity of the cabin mold piece 13 on one side close to the cabin mold piece 13, and after the cabin mold piece 13 and the cover plate mold piece 14 are welded, the supporting protrusion extends into the inner side of the cabin mold piece 13 to support the cabin mold piece 13. The supporting protrusion not only thickens the bottom of the cover plate mold piece 14, but also thickens the thickness of the welding point between the cover plate mold piece 14 and the cabin mold piece 13. After the cabin mold 13 and the cover mold 14 are welded, the welds also need to be polished to increase the thickness of the welds, which can increase the safety performance of the radiator head 10. The outer end of the radiator branch pipe 20 is sleeved on the outside of the head outlet 12 and docked with the cover mold 14 to increase the thickness of the cover mold 14 and prevent the cover mold 14 from becoming too thin due to grinding loss.

[0052] In the prior art, when welding the radiator head 10 and the radiator branch pipe 20, the length of the head outlet nozzle 12 can be increased, and then the head outlet nozzle 12 and the radiator branch pipe 20 are positioned and welded by clamping the head outlet nozzle 12 in the later stage. However, in the prior art, the head outlet nozzle 12 is composed of two mold pieces welded together (see Figure 11 , where the bold black line is the weld of the two molds), the longer the header outlet 12 is, the more difficult it is to weld. However, the present application can shorten the length of the header outlet 12 by inserting the header outlet 12 on the radiator header 10 into the inner side of the radiator branch pipe 20 for welding, thereby reducing the difficulty of welding the cabin mold 13 and the cover plate mold 14.

[0053] Embodiment 2:

[0054] See also Figure 7 The present invention provides a technical solution: a radiator that is easy to weld. On the basis of the first embodiment, the length of the head outlet 12 is slightly increased, and then a discharge groove 17 is opened on the outside of the head outlet 12, and a ring-shaped solder 18 is prefabricated on the outside of the discharge groove 17; the ring-shaped solder 18 adopts austenitic stainless steel welding wire, and the ring-shaped solder 18 is melted by laser heating, and the ring-shaped solder 18 is filled into the gap between the head outlet 12 and the heating branch pipe 20, so as to strengthen the metallurgical bonding strength between the heating branch pipe 20 and the head outlet 12.

[0055] Embodiment three:

[0056] See also Figures 8 - 10, the present invention provides a technical solution: a radiator convenient for welding. On the basis of Embodiment 1, a spoiler column 21 is placed inside the heating branch pipe 20. The spoiler column 21 penetrates through the spiral spoiler fin 22, combining the spiral spoiler fin 22 and the spoiler column 21 together. The outer end of the spiral spoiler fin 22 fits against the inner wall of the heating branch pipe 20, and the inner wall of the heating branch pipe 20 provides radial support for the spiral spoiler fin 22; both ends of the spiral spoiler fin 22 are provided with top plates 23, and the two side top plates 23 are respectively abutted against the header outlet 12 of the two sides of the radiator head 10; the spiral spoiler fin 22 destroys the thermal boundary layer and enhances the turbulence of the heat medium, improving the heat transfer coefficient.

[0057] The top plate 23 includes a central rod, and the central rod is integrally provided with the spiral spoiler fin 22. The central rod can adopt the spoiler column 21, or threads and threaded grooves can be processed on the spoiler column 21 and the central rod, and then the central rod is fixed to the spoiler column 21 through threaded connection. An umbrella rib 231 is hinged to the outside of the central rod. The umbrella rib 231 is arranged in an L shape. A hollow sleeve 233 is slidably sleeved on the outside of the umbrella rib 231. A connecting rod 234 is hinged to the outside of the hollow sleeve 233, and the other end of the connecting rod 234 is hinged to the umbrella rib 231; by sliding the hollow sleeve 233 to push the connecting rod 234 to rotate, and then driving the umbrella rib 231 to rotate through the connecting rod 234, the unfolding and closing of the umbrella rib 231 are completed. A thrust spring 232 is connected between the hollow sleeve 233 and the outer wall of the central rod. Through the thrust of the thrust spring 232, the hollow sleeve 233 is forced to drive the umbrella rib 231 to rotate, so that the umbrella rib 231 is in an unfolded state and is stably inside the heating branch pipe 20. The umbrella rib 231 in this device can be folded. When welding the heating branch pipe 20 and the header outlet 12, the stability of the top plate 23 will not be damaged. Since both ends of the heating branch pipe 20 need to be welded to the header outlet 12, after welding one side of the header outlet 12, the top plate 23 and the spiral spoiler fin 22 are placed into the heating branch pipe 20, and then the header outlet 12 is inserted into the other side of the heating branch pipe 20 for welding. The header outlet 12 will compress the umbrella rib 231 to fold, so that the welding of the header outlet 12 will not damage the stability of the top plate 23.

[0058] At the corresponding other end of the umbrella rib 231 at the water outlet end of the heating branch pipe 20, there is a non-slip piece 235 connected. One end of the non-slip piece 235 that fits against the inner wall of the heating branch pipe 20 is provided with anti-slip lines. The non-slip piece 235 prevents sliding, thereby avoiding noise generated by the top plate 23 inside the heating branch pipe 20. The top plate 23 at the water outlet end is in contact with the outer edge of the water outlet of the film head through the non-slip piece 235. The water flow in the heating branch pipe 20 enters from the water inlet end and leaves from the water outlet end. The impact force of the water flow will force the spiral flow disturbing piece 22 to move along with the water flow. By preventing sliding through the non-slip piece 235 on the top plate 23, the movement of the spiral flow disturbing piece 22 can be avoided, thereby avoiding noise. The top plate 23 at the water inlet end of the heating branch pipe 20 is in contact with the inner wall of the water outlet of the film head through the outer wall of the umbrella rib 231.

[0059] When initially welding the heating branch pipe 20 to the water outlet of the film head 12, first weld the water inlet end of the heating branch pipe 20 to the water outlet of the film head 12, then insert the spiral flow disturbing piece 22 with the top plate 23 from the water outlet end into the heating branch pipe 20, and then weld the water outlet end of the heating branch pipe 20 to the water outlet of the film head 12. At this time, the water outlet of the film head 12 inserted into the heating branch pipe 20 will be in contact with the non-slip piece 235, pushing the spiral flow disturbing piece 22 to move towards the water inlet end of the heating branch pipe 20. At this time, the top plate 23 at the water inlet end of the heating branch pipe 20 will contract under the extrusion of the water inlet of the film head 12. At this time, the inner wall of the water outlet of the film head 12 will compress the umbrella rib 231 inward, and the umbrella rib 231 will avoid it by rotating, thereby avoiding the spiral flow disturbing piece 22 from being damaged by extrusion.

[0060] Working principle: First, stamp the cabin diaphragm 13 and the cover diaphragm 14, then weld the butt nut to the cabin diaphragm 13, then weld the cabin diaphragm 13 and the cover diaphragm 14, and then grind the weld bead. After grinding, insert the water outlet of the film head 12 into the inside of the heating branch pipe 20 through the automatic pipe jacking and single-piece expansion technology, and then weld the heating branch pipe 20 and the film head 10 of the radiator together by laser welding. Finally, grind the welding joint of the heating branch pipe 20 and the film head 10 of the radiator.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0062] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A radiator convenient for welding, comprising a heating branch pipe (20), and radiator heads (10) are welded at both ends of the heating branch pipe (20), and it is characterized in that: The radiator head (10) includes a cabin diaphragm (13) and a cover diaphragm (14); the cover diaphragm (14) is welded to the cabin diaphragm (13) at the hatch of the cabin diaphragm (13), so that the radiator head (10) has a cavity for containing liquid; On one side of the cover diaphragm (14) close to the heating branch pipe (20), there is a head outlet (12), and the head outlet (12) is communicated with the cavity of the radiator head (10); the head outlet (12) is inserted into the inner side of the heating branch pipe (20) and welded to the heating branch pipe (20); Main ports (11) communicated with the cavity of the radiator head (10) are arranged at the front and rear ends of the cabin diaphragm (13); a butt joint nut (31) is welded inside the main port (11), and a double-headed hollow stud (32) is screwed inside the butt joint nut (31). Adjacent radiator heads (10) are detachably connected through the double-headed hollow stud (32) and the butt joint nut (31).

2. The radiator convenient for welding according to claim 1, characterized in that: The cabin diaphragm (13) is provided with a positioning protrusion (15) on one side close to the cover diaphragm (14), and a clamping groove (16) corresponding to the positioning protrusion (15) is formed on the cover diaphragm (14).

3. The radiator convenient for welding according to claim 1, characterized in that: The cover diaphragm (14) is provided with a support protrusion extending into the inner cavity of the cabin diaphragm (13) on one side close to the cabin diaphragm (13).

4. The radiator convenient for welding according to claim 1, characterized in that: The outer end of the heating branch pipe (20) is sleeved outside the head outlet (12) and abuts against the cover diaphragm (14); the head outlet (12) and the heating branch pipe (20) are in interference fit.

5. The radiator convenient for welding according to claim 1, characterized in that: A material discharging groove (17) is formed on the outer side of the head outlet (12), and an annular solder (18) is placed outside the material discharging groove (17).

6. The radiator convenient for welding according to claim 1, characterized in that: A flow disturbing column (21) is placed inside the heating branch pipe (20), and a spiral flow disturbing piece (22) is arranged on the outer side of the flow disturbing column (21). The outer end of the spiral flow disturbing piece (22) is attached to the inner wall of the heating branch pipe (20); both ends of the spiral flow disturbing piece (22) are provided with top plates (23), and the two side top plates (23) respectively abut against the head outlets (12) of the two side radiator heads (10).

7. The radiator convenient for welding according to claim 6, characterized in that: The top plate (23) includes a central rod fixedly connected to the flow disturbing column (21), and a rib (231) is hinged to the outer side of the central rod; a hollow sleeve (233) is slidably sleeved on the outer side of the central rod, a connecting rod (234) is hinged to the outer side of the hollow sleeve (233), and the other end of the connecting rod (234) is hinged to the rib (231); a thrust spring (232) is connected between the hollow sleeve (233) and the central rod.

8. The radiator convenient for welding according to claim 6, wherein: An anti-slip piece (235) is connected to the other end of the rib (231) corresponding to the water outlet end of the heating branch pipe (20), and the top plate (23) at this end abuts against the outer edge of the head outlet (12) through the anti-slip piece (235); the top plate (23) at the other end abuts against the inner wall of the head outlet (12) through the outer wall of the rib (231).

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