Multi-angle expansion type three-in-one composite radiator

Abstract

A multi-angle expansion type three-in-one composite radiator relates to the technical field of engine heat dissipation and comprises a water tank radiator, an intercooler and an engine oil radiator, a first-stage swing opening and closing mechanism is arranged between the water tank radiator and the intercooler, and a second-stage swing opening and closing mechanism is arranged between the intercooler and the engine oil radiator; the water tank radiator comprises a square first plate frame, an upper water inlet chamber is welded to the inner bottom face of the first plate frame and externally connected with a water inlet pipe, and a lower water outlet chamber is welded to the inner top face of the first plate frame and externally connected with a water outlet pipe. A plurality of cooling water pipes are fixed in the first plate frame in parallel, the upper ends of the cooling water pipes are fixedly communicated with the upper water inlet chamber, and the lower ends are fixedly communicated with the lower water outlet chamber; a spiral heat dissipation belt is fixedly clamped between every two adjacent cooling water pipes. The problems that according to a heat dissipation scheme in the traditional technology, layout is difficult due to large occupied equipment space, cost is high due to the fact that a machine needs to be disassembled for maintenance, energy consumption is increased due to the large number of independent fans, and the efficiency of a radiator is attenuated are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of engine heat dissipation, and in particular to a multi-angle expandable three-in-one composite radiator. Background Art

[0002] In areas such as engineering machinery, special vehicles and high-power generator sets, the heat generated by the power system is growing exponentially, and heat dissipation performance has become a key bottleneck restricting equipment reliability and energy efficiency.

[0003] However, traditional heat dissipation solutions have the following structural defects: 1. Traditional radiators, intercoolers, and oil radiators need to be installed independently, taking up a lot of space and making them difficult to arrange, especially in compact equipment (such as construction machinery and special vehicles).

[0004] 2. Cleaning traditional radiators requires disassembly of the entire machine, resulting in high maintenance costs and long downtime. Dust accumulation causes the heat dissipation efficiency to decrease by more than 30%.

[0005] 3. Independent radiators need to be equipped with fans separately, which will cause interference between air ducts, increase additional power consumption and increase installation complexity.

[0006] 4. Problems of heat exchange efficiency degradation include: intercooler laminar flow causes boundary layer thickening and low heat exchange efficiency; oil cooler flow resistance is large and oil temperature distribution is uneven; dust accumulation blocks the heat dissipation gap.

[0007] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Summary of the Invention

[0008] In response to the defects in the existing technology, the present invention provides a multi-angle expandable three-in-one composite radiator to solve the problems existing in the heat dissipation solutions of traditional technologies, such as the large equipment space occupied resulting in difficult layout, the high cost caused by the need to disassemble the machine for maintenance, the increased energy consumption due to the large number of independent fans, and the attenuation of radiator efficiency.

[0009] To achieve the above object, the present invention provides the following technical solutions: A multi-angle expandable three-in-one composite radiator includes a water tank radiator, an intercooler and an oil radiator. A first-level swing opening and closing mechanism is provided between the water tank radiator and the intercooler, and a second-level swing opening and closing mechanism is provided between the intercooler and the oil radiator.

[0010] As an optimized solution, the water tank radiator includes a square first plate frame, the intercooler includes a square second plate frame, and the oil radiator includes a square third plate frame.

[0011] As an optimized solution, an upper water inlet chamber is welded on the inner bottom surface of the first plate frame, and the upper water inlet chamber is connected to the water inlet pipe. A lower water outlet chamber is welded on the inner top surface of the first plate frame, and the lower water outlet chamber is connected to the water outlet pipe.

[0012] As an optimized solution, several cooling water pipes are fixed in parallel in the first plate frame. The cooling water pipes are vertically arranged square-mouthed flat tubes. The upper ends of the cooling water pipes are welded to the upper water inlet chamber and connected thereto, and the lower ends of the cooling water pipes are welded to the lower water outlet chamber and connected thereto.

[0013] As an optimized solution, a spiral heat dissipation belt is fixedly mounted between two adjacent cooling water pipes.

[0014] As an optimized solution, an air inlet pipe and an air outlet pipe are fixedly mounted on the upper end surface of the second plate frame, and the lower ends of the air inlet pipe and the air outlet pipe pass through the second plate frame and extend into the interior thereof.

[0015] As an optimized solution, a transition elbow is welded to the lower ends of the air inlet pipe and the air outlet pipe, a drain valve is integrated at the lower end of the transition elbow, and the lower end opening of the drain valve extends to the lower end surface of the second plate frame.

[0016] As an optimized solution, a plurality of air spoilers are welded on the inner circumferential walls of the air inlet pipe, the transition elbow and the air outlet pipe, and the air spoilers are semicircular arc plates.

[0017] As an optimized solution, several horizontal heat dissipation fins are fixed in the second plate frame. The heat dissipation fins are arranged in parallel and divided into two symmetrical rows. The two ends of each heat dissipation fin are respectively welded to the inner walls on both sides of the second plate frame.

[0018] As an optimized solution, each of the heat dissipating fins is provided with a clamping notch, and the two rows of heat dissipating fins are tightly clamped on the air inlet pipe, the transition elbow and the air outlet pipe from the front and rear sides.

[0019] As an optimized solution, the first-level swinging opening and closing mechanism includes two symmetrical hinged fixing plates, which are welded on both sides of the upper surface of the first plate frame, and two symmetrical connecting bent arms are welded on both sides of the upper surface of the second plate frame, and the ends of the connecting bent arms are rotatably hinged on the hinged fixing plates.

[0020] As an optimized solution, a lower connecting square seat is fixedly connected to each longitudinal end face of the first plate frame, and an upper connecting square seat is fixedly connected to each longitudinal end face of the second plate frame. A first-level telescopic connecting rod is hingedly installed between the lower connecting square seat and the upper connecting square seat.

[0021] As an optimized solution, the secondary swing opening and closing mechanism includes a square swing opening and closing frame, the upper ends of which are hingedly mounted on the upper side end faces of the second plate frame, and the third plate frame is welded and mounted on the swing opening and closing frame.

[0022] As an optimized solution, a lower fixed angle seat is fixedly connected to each longitudinal end face of the second plate frame, and an upper fixed angle seat is fixedly connected to each longitudinal end face of the swinging opening and closing frame. A secondary telescopic connecting rod is hingedly installed between the upper fixed angle seat and the lower fixed angle seat.

[0023] As an optimized solution, a deflector is welded on the transverse end face of the first plate frame, and the deflector is a horizontally arranged cylindrical cover.

[0024] As an optimized solution, a detachable cleaning brush is hung on each longitudinal end face of the first plate frame.

[0025] As an optimized solution, a self-locking clip is rotatably provided on each longitudinal end face of the second plate frame, and an L-shaped slide groove is provided on the self-locking clip. A limiting card column is fixed on each longitudinal end face of the first plate frame, and the limiting card column is slidably mounted in the L-shaped slide groove.

[0026] As an optimized solution, two symmetrical mounting frames are provided below the first plate frame. A triangular base is fixed on the longitudinal side wall of the first plate frame near the lower portion, and the triangular base is fixed to the mounting frame by bolts.

[0027] As an optimized solution, two positioning seats are welded on the inner end surface of the first plate frame near the lower end, and each positioning seat is provided with a fixing pin, through which the swing opening and closing frame can be locked.

[0028] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the water tank radiator (water cooling), intercooler (air cooling), and oil radiator (oil cooling) are combined into a single module through an opening and closing mechanism, which significantly reduces the occupied space and is particularly suitable for mobile equipment with limited space (such as construction machinery and compact vehicles); the present invention adopts a shared air source design, and uniformly connects the cooling fan through the air deflector, eliminating the need for an independent fan system, reducing energy consumption and installation complexity, and further optimizing the spatial layout.

[0029] The present invention is provided with a two-stage swing opening and closing mechanism, wherein the first-stage mechanism includes a water tank radiator and an intercooler, and the two are linked to open and close through a hinged fixing plate, a connecting arm and a first-stage telescopic connecting rod, and the self-locking clip and the limit card column ensure stable locking after deployment; the second-stage mechanism includes an intercooler and an oil radiator, and the two are coordinated with the second-stage telescopic connecting rod through a swing opening and closing frame to realize independent deployment of the oil radiator; the above-mentioned two-stage swing opening and closing mechanism greatly improves the convenience of maintenance: there is no need to disassemble the entire machine, and all heat dissipation surfaces can be exposed by manual deployment, which completely solves the problem of cleaning dead corners caused by the complex structure of traditional radiators; further, the self-locking clip (L-shaped slide + limit card column) and the fixed pin are doubly locked to ensure operation safety in the deployed state.

[0030] Each radiator in this invention features a performance-enhancing design. For example, the water tank radiator utilizes an optimized structural design of square-mouthed flat tubes and spiral heat dissipation strips to increase the heat exchange area. The spiral structure disrupts the airflow, enhancing turbulent heat transfer. The vertical flow channel design in the water tank radiator evenly distributes the water flow from top to bottom, preventing local overheating. The intercooler utilizes air spoilers to force airflow deflection, extending the flow path and disrupting the laminar boundary layer, improving heat exchange efficiency. The split-type heat dissipation fin mounting structure fits tightly to the surfaces of the intake / exhaust pipes and transition elbows, ensuring rapid heat transfer to the fins. The two symmetrical rows achieve balanced heat dissipation. The oil radiator utilizes a low-resistance design, balancing oil circuit pressure loss and heat dissipation efficiency through horizontal square-mouthed flat tubes and corrugated heat dissipation strips. The corrugated structure expands the heat dissipation area, and the side-mounted fuel tank shortens the oil circuit and reduces flow resistance.

[0031] The present invention adopts a modular cleaning design, and the detachable cleaning brush is convenient for quickly removing surface dust to maintain air intake efficiency; the swinging fully expanded structure can completely expose the gap between the heat sinks, and can also be used for deep cleaning with a high-pressure air gun or water gun, effectively solving the performance degradation caused by dust accumulation; the integrated drain valve at the bottom of the intercooler can prevent condensation water from accumulating and corroding the pipes or icing and clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0033] Figure 1 It is a schematic external front view of the water tank radiator, intercooler and oil radiator of the present invention in the folded working state; Figure 2 is a schematic diagram of the overall exterior of the present invention as viewed from the side; Figure 3This is a schematic diagram of the overall exterior of the present invention when viewed from above; Figure 4 Schematic diagram of the external front view of the water tank radiator, intercooler and oil radiator in the present invention when unfolded and cleaned; Figure 5 It is a schematic cross-sectional view of the internal structure of the water tank radiator in the present invention; Figure 6 Schematic diagram of the cross-section of the internal structure of the intercooler in the present invention; Figure 7 This is a schematic cross-sectional view of the internal structure of the oil radiator in the present invention. In the figure: 1-water tank radiator, 101-first plate frame, 102-upper water inlet chamber, 103-water inlet pipe, 104-lower water outlet chamber, 105-water outlet pipe, 106-cooling water pipe, 107-spiral heat dissipation belt, 2-intercooler, 201-second plate frame, 202-inlet pipe, 203-outlet pipe, 204-transition elbow, 205-drain valve, 206-air spoiler, 207-radiation fin, 208-card notch, 3-oil radiator, 301-third plate frame, 302-side inlet oil tank, 303 -Side outlet oil tank, 304-Oil inlet pipe, 305-Oil outlet pipe, 306-Cooling oil pipe, 307-Corrugated heat dissipation belt, 4-Air deflector, 5-Cleaning brush, 6-Hinged fixing plate, 7-Connecting bent arm, 8-Lower connecting square seat, 9-Upper connecting square seat, 10-First-stage telescopic connecting rod, 11-Self-locking buckle, 12-Limiting card column, 13-Swinging opening and closing frame, 14-Lower fixed angle seat, 15-Upper fixed angle seat, 16-Second-stage telescopic connecting rod, 17-Mounting frame, 18-Triangular base, 19-Location seat, 20-Fixed pin. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0035] like Figures 1 to 7 As shown, the multi-angle deployable three-in-one composite radiator includes a water tank radiator 1, an intercooler 2 and an oil radiator 3. A first-level swing opening and closing mechanism is provided between the water tank radiator 1 and the intercooler 2, and a second-level swing opening and closing mechanism is provided between the intercooler 2 and the oil radiator 3.

[0036] The water tank radiator 1 includes a square first plate frame 101, an upper water inlet chamber 102 is welded on the inner bottom surface of the first plate frame 101, and the upper water inlet chamber 102 is externally connected to the water inlet pipe 103, and a lower water outlet chamber 104 is welded on the inner top surface of the first plate frame 101, and the lower water outlet chamber 104 is externally connected to the water outlet pipe 105.

[0037] Several cooling water pipes 106 are fixed in parallel in the first plate frame 101. The cooling water pipes 106 are vertically arranged square-mouthed flat tubes. The upper ends of the cooling water pipes 106 are welded to the upper water inlet chamber 102 and communicated therewith, and the lower ends of the cooling water pipes 106 are welded to the lower water outlet chamber 104 and communicated therewith.

[0038] A spiral heat dissipation belt 107 is fixedly mounted between two adjacent cooling water pipes 106 .

[0039] The intercooler 2 includes a square second plate frame 201 , an air inlet pipe 202 and an air outlet pipe 203 are fixedly mounted on the upper end surface of the second plate frame 201 , and the lower ends of the air inlet pipe 202 and the air outlet pipe 203 pass through the second plate frame 201 and extend into the interior thereof.

[0040] A transition elbow 204 is welded to the lower ends of the air inlet pipe 202 and the air outlet pipe 203 . A drain valve 205 is integrated at the lower end of the transition elbow 204 . The lower end opening of the drain valve 205 extends to the lower end surface of the second plate frame 201 .

[0041] A plurality of air spoilers 206 are welded on the inner circumferential walls of the air inlet pipe 202 , the transition elbow 204 and the air outlet pipe 203 . The air spoilers 206 are semicircular arc plates.

[0042] Several horizontal heat dissipation fins 207 are fixedly provided in the second plate frame 201 . The heat dissipation fins 207 are arranged in parallel and divided into two symmetrical rows. Both ends of each heat dissipation fin 207 are welded to the inner walls on both sides of the second plate frame 201 .

[0043] Each heat dissipation fin 207 is provided with a snap-fitting notch 208 , and the two rows of heat dissipation fins 207 are tightly snap-fitted to the air inlet pipe 202 , the transition elbow 204 and the air outlet pipe 203 from the front and rear sides.

[0044] The oil radiator 3 includes a square third plate frame 301, on both sides of which the outer walls are respectively welded with a side inlet oil tank 302 and a side outlet oil tank 303. The upper end of the side inlet oil tank 302 is connected to an oil inlet pipe 304, and the lower end of the side outlet oil tank 303 is connected to an oil outlet pipe 305.

[0045] Several parallel cooling oil pipes 306 are provided in the third plate frame 301. The cooling oil pipes 306 are horizontally arranged square-mouthed flat tubes. The two ends of each cooling oil pipe 306 are respectively welded and fixed to the inner walls on both sides of the third plate frame 301. One end of the cooling oil pipe 306 is connected to the side inlet oil tank 302, and the other end is connected to the side outlet oil tank 303.

[0046] A corrugated heat dissipation belt 307 is fixed between two adjacent cooling oil pipes 306 .

[0047] A deflector 4 is welded on the transverse end surface of the first plate frame 101 . The deflector 4 is a horizontally arranged cylindrical cover.

[0048] A detachable cleaning brush 5 is hung on each longitudinal end face of the first plate frame 101 .

[0049] The first-level swing opening and closing mechanism includes two symmetrical hinged fixed plates 6, which are welded to both sides of the upper surface of the first plate frame 101. Two symmetrical connecting arms 7 are welded to both sides of the upper surface of the second plate frame 201, and the ends of the connecting arms 7 are rotatably hinged to the hinged fixed plates 6.

[0050] A lower connecting square seat 8 is fixedly connected to each longitudinal end face of the first plate frame 101, an upper connecting square seat 9 is fixedly connected to each longitudinal end face of the second plate frame 201, and a primary telescopic connecting rod 10 is hingedly installed between the lower connecting square seat 8 and the upper connecting square seat 9.

[0051] A self-locking buckle 11 is rotatably provided on each longitudinal end face of the second plate frame 201, and an L-shaped sliding groove is provided on the self-locking buckle 11. A limiting card column 12 is fixed on each longitudinal end face of the first plate frame 101, and the limiting card column 12 is slidably mounted in the L-shaped sliding groove.

[0052] The secondary swing opening and closing mechanism includes a square swing opening and closing frame 13 , the upper ends of which are hingedly mounted on the upper side end surfaces of the second plate frame 201 , and the third plate frame 301 is welded and mounted on the swing opening and closing frame 13 .

[0053] A lower fixed angle seat 14 is fixedly connected to each longitudinal end face of the second plate frame 201 , an upper fixed angle seat 15 is fixedly connected to each longitudinal end face of the swing opening and closing frame 13 , and a secondary telescopic connecting rod 16 is hingedly installed between the upper fixed angle seat 15 and the lower fixed angle seat 14 .

[0054] Two symmetrical mounting frames 17 are provided below the first plate frame 101 . A triangular base 18 is fixed to the longitudinal side wall of the first plate frame 101 near the bottom. The triangular base 18 is fixed to the mounting frames 17 by bolts.

[0055] Two positioning seats 19 are welded on the inner end surface of the first plate frame 101 near the lower end. Each positioning seat 19 is provided with a fixing pin 20 , and the swing opening and closing frame 13 can be locked by the fixing pin 20 .

[0056] When the present invention is in use: in the folded working state, the two ends of the water pump and the water tank connecting pipeline are respectively fixed to the water inlet pipe 103 and the water outlet pipe 105 to form a closed water cycle; the two ends of the air pump and the turbocharged air circulation pipeline are respectively fixed to the air inlet pipe 202 and the air outlet pipe 203 to form a closed air cycle, and the two ends of the engine oil pipeline are respectively fixed to the oil inlet pipe 304 and the oil outlet pipe 305 to form a closed oil cycle; the port of the deflector 4 is connected to the cooling fan of the engine system and connected by bolts. The water tank radiator 1, the intercooler 2 and the oil radiator 3 share the same cooling air source, thus saving installation space; hot water enters the upper water inlet chamber 102 through the water inlet pipe 103, and then flows down evenly through each cooling water pipe 106 in sequence. The heat is transferred to the spiral heat dissipation belt 107 through the solid, and then carried away by the horizontal air flow. The cooled water enters the lower water outlet chamber 104 and is finally discharged through the water outlet pipe 105; the hot air enters the transition elbow 204 through the air inlet pipe 202, passes through the air spoiler 20 6, the multiple refraction turbulence, the flow rate decreases, and at the same time, the hot air exchanges heat with the outer heat dissipation fins 207, the temperature is reduced, and then the heat on the heat dissipation fins 207 is taken away by the horizontal airflow, and the cooled air is discharged through the outlet pipe 203; the hot oil enters the side oil inlet tank 302 through the oil inlet pipe 304, and then is transferred to the side oil outlet tank 303 through multiple cooling oil pipes 306. During the transfer process, the heat is dissipated outwards through the corrugated heat dissipation belt 307 and is also taken away by the horizontal airflow; during maintenance and cleaning During maintenance, pull out the fixing pin 20, manually pull up the second plate frame 201 and the third plate frame 301 to a specific angle in turn, and the first-level telescopic link 10 and the second-level telescopic link 16 will extend accordingly to provide support, and the self-locking buckle 11 will lock and fix the second plate frame 201; remove the cleaning brush 5, and clean the surface dust of the water tank radiator 1, the intercooler 2 and the air inlet end of the oil radiator 3 to reduce the problem of heat dissipation performance degradation caused by the accumulation of dust and debris, and extend the service life of the radiator.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and description of the present invention.

Claims

1. Multi-angle expandable three-in-one composite radiator, characterized by: It includes a water tank radiator, an intercooler and an oil radiator. A first-level swing opening and closing mechanism is provided between the water tank radiator and the intercooler, and a second-level swing opening and closing mechanism is provided between the intercooler and the oil radiator. The water tank radiator includes a square first plate frame, the intercooler includes a square second plate frame, and the oil radiator includes a square third plate frame; An upper water inlet chamber is welded on the inner bottom surface of the first plate frame, and the upper water inlet chamber is connected to the water inlet pipe. A lower water outlet chamber is welded on the inner top surface of the first plate frame, and the lower water outlet chamber is connected to the water outlet pipe. A plurality of cooling water pipes are fixed in parallel in the first plate frame. The cooling water pipes are vertically arranged square-mouthed flat pipes. The upper ends of the cooling water pipes are welded to and communicate with the upper water inlet chamber, and the lower ends of the cooling water pipes are welded to and communicate with the lower water outlet chamber. A spiral heat dissipation belt is fixedly mounted between two adjacent cooling water pipes; An air inlet pipe and an air outlet pipe are fixedly mounted on the upper end surface of the second plate frame, and the lower ends of the air inlet pipe and the air outlet pipe pass through the second plate frame and extend into the interior thereof; A transition elbow is welded to the lower ends of the air inlet pipe and the air outlet pipe, a drain valve is integrated at the lower end of the transition elbow, and the lower end opening of the drain valve extends to the lower end surface of the second plate frame; A plurality of air spoilers are welded on the inner circumferential walls of the air inlet pipe, the transition elbow and the air outlet pipe, and the air spoilers are semicircular arc plates; A plurality of horizontal heat dissipation fins are fixedly provided in the second plate frame. The heat dissipation fins are arranged in parallel and divided into two symmetrical rows. The two ends of each heat dissipation fin are respectively welded to the inner walls on both sides of the second plate frame. Each of the heat dissipation fins is provided with a clamping notch, and the two rows of heat dissipation fins are tightly clamped on the air inlet pipe, the transition elbow and the air outlet pipe from the front and rear sides.

2. The multi-angle expandable three-in-one composite radiator according to claim 1, characterized in that: The first-stage swing opening and closing mechanism includes two symmetrical hinged fixing plates, which are welded to both sides of the upper surface of the first plate frame. Two symmetrical connecting bent arms are welded to both sides of the upper surface of the second plate frame, respectively. The ends of the connecting bent arms are rotatably hinged to the hinged fixing plates. A lower connecting square seat is fixedly connected to each longitudinal end surface of the first plate frame, and an upper connecting square seat is fixedly connected to each longitudinal end surface of the second plate frame. A first-level telescopic connecting rod is hingedly installed between the lower connecting square seat and the upper connecting square seat.

3. The multi-angle expandable three-in-one composite radiator according to claim 1, characterized in that: The secondary swing opening and closing mechanism includes a square swing opening and closing frame, the upper ends of which are hingedly mounted on the upper side end surfaces of the second plate frame, and the third plate frame is welded and mounted on the swing opening and closing frame; A lower fixed angle seat is fixedly connected to each longitudinal end surface of the second plate frame, an upper fixed angle seat is fixedly connected to each longitudinal end surface of the swing opening and closing frame, and a secondary telescopic connecting rod is hingedly installed between the upper fixed angle seat and the lower fixed angle seat.

4. The multi-angle expandable three-in-one composite radiator according to claim 1, characterized in that: A flow guide cover is welded on the transverse end surface of the first plate frame, and the flow guide cover is a horizontally arranged cylindrical cover.

5. The multi-angle expandable three-in-one composite radiator according to claim 1, characterized in that: A detachable cleaning brush is hung on each longitudinal end face of the first plate frame.

6. The multi-angle expandable three-in-one composite radiator according to claim 1, characterized in that: A self-locking clip is rotatably provided on each longitudinal end face of the second plate frame, and an L-shaped sliding groove is provided on the self-locking clip. A limiting card column is fixed on each longitudinal end face of the first plate frame, and the limiting card column is slidably mounted in the L-shaped sliding groove.

7. The multi-angle expandable three-in-one composite radiator according to claim 1, characterized in that: Two symmetrical mounting frames are provided below the first plate frame. A triangular base is fixed on the longitudinal side wall of the first plate frame near the lower portion. The triangular base is fixed to the mounting frame by bolts. Two positioning seats are welded on the inner end surface of the first plate frame near the lower end, and each positioning seat is provided with a fixing pin, through which the swing opening and closing frame can be locked.

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