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CN-122007223-A - Machining system and machining process of heat exchanger and tubular fin heat exchanger

CN122007223ACN 122007223 ACN122007223 ACN 122007223ACN-122007223-A

Abstract

The invention belongs to the technical field of heat exchangers, and particularly relates to a processing system, a processing technology and a tubular fin heat exchanger of the heat exchanger, wherein the processing system comprises a pipe bending station, a flattening station, a shaping station, a doubling station and a pipe penetrating water expansion station, the pipe bending station is used for bending a heat exchange pipe into a heat exchange calandria, the flattening station is used for flattening the lower end part of the heat exchange calandria, the shaping station is used for shaping U-bend deformation sections of flattened parts of the heat exchange calandria, the doubling station is used for doubling the heat exchange calandria into heat exchange coils with a multi-row structure, the pipe penetrating water expansion station comprises a pipe penetrating mechanism, a plate arranging mechanism and a water expansion mechanism, the plate arranging mechanism is used for sequentially arranging a plurality of heat dissipation fins, the pipe penetrating mechanism is used for inserting the heat exchange coils folded into the plurality of heat dissipation fins, and the water expansion mechanism is used for expanding and deforming the heat exchange coils so as to be in close contact with the heat dissipation fins. The invention has the effects of eliminating welding leakage, improving the quality of the heat exchanger, guaranteeing the heat exchange performance and improving the production efficiency.

Inventors

  • ZHOU YUAN
  • CUI WEIQI

Assignees

  • 常州本杰自动化科技有限公司

Dates

Publication Date
20260512
Application Date
20260318

Claims (10)

  1. 1. A heat exchanger processing system, comprising: A pipe bending station for bending a heat exchange pipe (001) into a heat exchange calandria (002) in a snake shape; The flattening station (1) is used for flattening the lower end part of the heat exchange calandria (002); the shaping station (2) is used for shaping the U-shaped bend deformed at the flattened position of the heat exchange calandria (002); the double-folding work station (3), the double-folding work station (3) is used for doubling the shaped heat exchange calandria (002) into a heat exchange coil (003) with a multi-row structure; Poling water bloated worker station (4), poling water bloated worker station (4) include poling mechanism (401), arrange piece mechanism (402) and water bloated mechanism (403), arrange piece mechanism (402) and be used for arranging a plurality of radiating fins (004) in proper order and set up, poling mechanism (401) are used for inserting heat exchange coil (003) of fifty percent discount formation multirow in a plurality of radiating fins (004), water bloated mechanism (403) are used for making heat exchange coil (003) swell deformation, and then with radiating fins (004) in close contact.
  2. 2. The heat exchanger machining system according to claim 1, wherein the flattening station (1) comprises a flattening frame (101), a fixed mold (102), a pressing mold (103) and a pressing driving mechanism (104), wherein the pressing driving mechanism (104) is arranged on the flattening frame (101), the pressing mold (103) is arranged on a moving end of the pressing driving mechanism (104), the fixed mold (102) is arranged above the pressing mold (103), a flattening cavity (105) for inserting the lower end of the heat exchange calandria (002) is formed between the pressing mold (103) and the fixed mold (102), and the moving end of the pressing driving mechanism (104) drives the pressing mold (103) to be close to the fixed mold (102) so as to flatten the lower end of the heat exchange calandria (002).
  3. 3. The heat exchanger machining system according to claim 1, wherein the shaping station (2) comprises a shaping frame (201), a tail blocking mechanism (202), a middle clamping mechanism (203), a shaping mechanism (204) and a shaping driving mechanism (205) which are sequentially arranged on the shaping frame (201), a blocking cavity (2021) for inserting the upper end of the heat exchange calandria (002) is formed in the tail blocking mechanism (202), the blocking cavity (2021) is used for limiting the heat exchange calandria (002) to move along the x-axis direction, the middle clamping mechanism (203) is used for clamping the middle of the heat exchange calandria (002), the shaping driving mechanism (205) is used for driving the shaping mechanism (204) to move along the x-axis direction, a shaping cavity (2041) for inserting the flattened lower end of the heat exchange calandria (002) is formed in the shaping mechanism (204), and the shaping cavity (204) is provided with a square shaping notch (11) for accommodating the flattened calandria (204002) part.
  4. 4. A processing system of a heat exchanger according to claim 1, wherein the folding station (3) comprises a folding frame (301), and a first folding module and a second folding module which are provided on the folding frame (301), the first folding module being used for fixing an upper end portion and two lower end portions adjacent to the upper end portion of the heat exchange tube (002), and driving the two lower end portions to rotate reversely, so that an upper end portion where a portion of the heat exchange tube (002) is fixed forms a first folding direction, and the second folding module being used for fixing an upper end portion and two lower end portions adjacent to the upper end portion, and driving the two lower end portions to rotate reversely, so that an upper end portion where another portion of the heat exchange tube (002) is fixed forms a second folding direction, the first folding direction being opposite to the second folding direction.
  5. 5. The heat exchanger processing system of claim 1, wherein the fin arranging mechanism (402) comprises two fin arranging side plates (40233) which are arranged oppositely, a fin arranging channel is formed between the two fin arranging side plates (40233), fin arranging baffles (40236) are respectively arranged at two ends of the fin arranging channel, and a plurality of radiating fins (004) are sequentially arranged between the two fin arranging baffles (40236).
  6. 6. The processing system of the heat exchanger of claim 1, wherein the tube threading mechanism (401) comprises a tube threading sliding table mechanism (4011), a rotating mechanism (4012), a tube threading platform (4013), a support plate component (4014), a tube pushing component (4015) and a tube threading driving mechanism (4016), the tube threading sliding table mechanism (4011) is positioned on one side of the tube arranging mechanism (402), the rotating mechanism (4012) is arranged on the tube threading sliding table mechanism (4011), the tube threading sliding table mechanism (4011) is used for driving the rotating mechanism (4012) to approach or separate from the tube arranging mechanism (402) along the x-axis direction, the tube threading platform (4013) is arranged on the rotating mechanism (4012), the rotating mechanism (4012) is used for driving the tube threading platform (4013) to rotate around the z-axis, the tube threading driving mechanism (4016), the tube pushing component (4015) and the support plate component (4) are sequentially arranged on one side of the tube arranging mechanism (402) along the x-axis direction, the tube threading sliding table mechanism (4012) is used for driving the tube threading component (4013) to move towards the tube arranging component (4014) along the x-axis direction, the tube pushing component (4014) is arranged on the tube arranging mechanism (4014) to move towards the end part (4014), and then the lower end part of the heat exchange coil (003) is pushed to sequentially pass through the plurality of radiating fins (004).
  7. 7. A heat exchanger machining system according to claim 1, wherein the water expansion mechanism (403) comprises: a water tank (4031); The water tank is characterized by comprising a water inlet pipe (4032), wherein one end of the water inlet pipe (4032) is connected with the water tank (4031), the other end of the water inlet pipe (4032) is communicated with a heat exchange coil (003), a water pumping vortex pump (4033), a two-way ball valve I (4034), a pressure cylinder (4035), a two-way ball valve II (4036) and a three-way ball valve (4037) are sequentially arranged on the water inlet pipe (4032) from the water tank (4031) to the direction of the heat exchange coil (003), and the three-way ball valve I (4037) is connected with an external air supply device; The water return pipe (4039), the one end of water return pipe (4039) with water tank (4031) is connected, the other end and heat exchange coil (003) of water return pipe (4039) communicate, be provided with two-way ball valve three (40310) on water return pipe (4039).
  8. 8. A tubular fin heat exchanger manufactured by a processing system of a heat exchanger according to any one of claims 1 to 7, comprising a fin group and a heat exchange coil (003), wherein the fin group is composed of a plurality of heat dissipation fins (004) which are parallel to each other and are arranged at a certain distance, the heat exchange coil (003) is composed of a multi-layer structure formed by bending a heat exchange tube (001) into a multi-section continuous U shape, and the heat exchange coil (003) is arranged on each heat dissipation fin (004) of the fin group in a penetrating manner and is tightly attached to the heat dissipation fins (004); The multilayer structure comprises at least one upper layer horizontal calandria layer (0031) and at least one lower layer horizontal calandria layer (0032), wherein the upper layer horizontal calandria layer (0031) and the lower layer horizontal calandria layer (0032) are alternately arranged at intervals along the z-axis direction, the corresponding end parts of the adjacent upper layer horizontal calandria layer (0031) and the lower layer horizontal calandria layer (0032) are integrally connected through a first inclined U-shaped bent part (0033) with a first folding direction, the corresponding end parts of the lower layer horizontal calandria layer (0032) and the adjacent lower layer upper layer horizontal calandria layer (0031) are integrally connected through a second inclined U-shaped bent part (0034) with a second folding direction, and the first folding direction and the second folding direction are opposite; Each upper horizontal calandria layer (0031) and each lower horizontal calandria layer (0032) comprise a first U-shaped bent section (0035), a second U-shaped bent section (0036) and a straight pipe section (0037), two ends of the straight pipe section (0037) are respectively connected with the first U-shaped bent section (0035) and the second U-shaped bent section (0036) integrally, the first U-shaped bent sections (0035) on the same side are all arranged in parallel, and the second U-shaped bent sections (0036) on the same side are all arranged in parallel; One end of the heat exchange tube (001) forms a fluid inlet end of the heat exchange coil (003), and the other end of the heat exchange tube (001) forms a fluid outlet end of the heat exchange coil (003).
  9. 9. The tube fin heat exchanger of claim 8, wherein each of said first U-turn sections (0035) has a flattened planar surface formed on each side thereof, each of said fins (004) has a plurality of fin holes formed therein, each of said fin holes including a square slot (0041) through which the first U-turn section (0035) passes and an arcuate slot (0042) through which the straight tube section (0037) passes, said square slot (0041) having a height matching a spacing between flattened planar surfaces formed on each side of said first U-turn section (0035), said arcuate slot (0042) having a diameter matching an outer diameter of said straight tube section (0037), a slot edge of each of said arcuate slots (0042) having an outwardly projecting limit flange (0043), said limit flange (0043) abutting an adjacent fin (004).
  10. 10. A process for manufacturing a heat exchanger, using a heat exchanger manufacturing system according to any one of claims 1 to 7, characterized in that the process comprises the steps of: S1, bending a heat exchange tube (001) without a weld joint into a heat exchange calandria (002) through a tube bending station, wherein the bent heat exchange calandria (002) is formed into a snake-shaped structure which is horizontally arranged by a plurality of sections of continuous U shapes; Step S2, flattening procedure, namely sequentially inserting the lower end part of the heat exchange calandria (002) which is tiled after being bent in the step S1 into a flattening cavity (105), and driving a compacting die (103) to be close to a fixed die (102) through a moving end of a compacting driving mechanism (104) so as to flatten the lower end part of the heat exchange calandria (002); Step S3, a shaping procedure, namely placing the flattened heat exchange calandria (002) in the step S2 on a shaping station (2), inserting the upper end part of the heat exchange calandria (002) into a blocking cavity (2021), clamping the middle part of the heat exchange calandria (002) by a middle clamping mechanism (203), and driving a shaping mechanism (204) to move along the x-axis direction by a shaping driving mechanism (205), so that the flattened lower end part of the heat exchange calandria (002) is inserted into a shaping cavity (2041) to shape a U-shaped bend deformed at the flattened part; S4, a doubling-up procedure, namely placing the heat exchange calandria (002) shaped in the step S3 on a first doubling-up module, wherein the first doubling-up module is used for fixing the upper end part of the heat exchange calandria (002) and two lower end parts adjacent to the upper end part, driving the two lower end parts to reversely rotate so as to enable part of the fixed upper end parts of the heat exchange calandria (002) to form a first doubling-up direction, placing the heat exchange calandria (002) doubled up by the first doubling-up module on a second doubling-up module, and the second doubling-up module is used for fixing the upper end part of the heat exchange calandria (002) and two lower end parts adjacent to the upper end part, driving the two lower end parts to reversely rotate so as to enable the other part of the heat exchange calandria (002) to be fixed to form a second doubling-up direction, and doubling-up the heat exchange calandria (002) which is horizontally arranged into a plurality of heat exchange coils (003) in a doubling-up mode through the first doubling-up module and the second doubling-up module; S5, arranging a fin arranging baffle plate (40236) at one end of the fin arranging channel, arranging a plurality of radiating fins (004) from one end of the fin arranging channel to the other end in sequence, and arranging another fin arranging baffle plate (40236) at the other end of the fin arranging channel to finish fin arranging operation of the fin group; Step S6, a poling preparation procedure, wherein a rotating mechanism (4012) drives a poling platform (4013) to rotate a certain angle around a z-axis, a support plate assembly (4014) faces the outer side of the poling mechanism (401), a heat exchange coil (003) which is folded into a plurality of rows is arranged in the support plate assembly (4014) in a penetrating mode, the upper end part of the heat exchange coil (003) is abutted to a push tube assembly (4015), the rotating mechanism (4012) drives the poling platform (4013) to rotate and reset around the z-axis, the lower end part of the heat exchange coil (003) faces a sheet discharging channel, and a poling sliding table mechanism (4011) drives the rotating mechanism (4012) to be close to the sheet discharging channel along the x-axis direction; Step S7, a pipe penetrating process, namely moving a push pipe assembly (4015) so as to push the lower end part of the heat exchange coil (003) to sequentially penetrate through the plurality of radiating fins (004); Step S8, a poling resetting procedure, namely a poling driving mechanism (4016) drives a push tube assembly (4015) to be far away from the heat exchange coil (003) along the x-axis direction until the push tube assembly is separated from the upper end part of the heat exchange coil (003); Step S9, a pipe expanding process, namely connecting one end of a water inlet pipe (4032) with a fluid inlet end of a heat exchange coil (003), connecting the other end of a water return pipe (4039) with a fluid outlet end of the heat exchange coil (003), opening a liquid passage of a first two-way ball valve (4034), a second two-way ball valve (4036) and a three-way ball valve (4037), opening a third two-way ball valve (40310), conveying fluid into the water inlet pipe (4032) through a water-making vortex pump (4033) until the water inlet pipe (4032) and the heat exchange coil (003) are filled with fluid, closing the first two-way ball valve (4034) and the third two-way ball valve (40310) after the water inlet pipe (4032) and the heat exchange coil (003) are filled with fluid, preventing the fluid in the water inlet pipe (4032) from flowing back to a water tank (4031) and sealing a pressurizing pipeline, pressurizing the fluid in the water inlet pipe (4032) and the heat exchange coil (003) through a pressurizing cylinder (4035), expanding and deforming the heat exchange coil (004), and tightly contacting with a heat radiating fin (004) for 1S-2S; S10, after the pipe expansion is finished, closing a liquid passage of a two-way ball valve II (4036) and a three-way ball valve (4037), opening a three-way ball valve III (40310), opening a gas passage of the three-way ball valve (4037), and supplying gas into a water inlet pipe (4032) by an external gas supply device, wherein the gas pushes the water inlet pipe (4032) and residual liquid in a heat exchange coil (003) to be discharged back to a water tank (4031) through a water return pipe (4039); and S11, disconnecting the water inlet pipe (4032) from the fluid inlet end, disconnecting the water return pipe (4039) from the fluid outlet end, and taking out the tube-type fin heat exchanger (000) with the expanded tube from the fin discharging channel.

Description

Machining system and machining process of heat exchanger and tubular fin heat exchanger Technical Field The invention relates to the technical field of heat exchangers, in particular to a processing system and processing technology of a heat exchanger and a tubular fin heat exchanger. Background In the technical field of refrigeration, a heat exchanger is one of four core components for refrigeration, and the heat exchange performance of the heat exchanger directly determines the refrigeration efficiency and the operation stability of a refrigeration system. The heat exchange tube is one of the core heat transfer substrates of the heat exchanger, is of a tubular structure with a hollow internal channel, and can be used for circulating a heat exchange medium (cold fluid or hot fluid). In order to improve the heat exchange efficiency of the heat exchanger, in the prior art, a metal fin with high heat conductivity is arranged on the surface of a heat exchange tube, so that the heat exchange surface area of the heat exchanger is increased, and the heat exchange efficiency is improved. In the process of processing and assembling the heat exchanger, the heat exchange tube and the metal fins are connected in a cannula connection mode, and the concrete process is that after the heat exchange tube is subjected to bending, welding, flattening and other processes, the heat exchange tube is assembled into the fins through a push-expansion process, so that the heat exchange tube and the metal fins are tightly connected, and the continuity of heat transfer between the heat exchange tube and the fins is ensured. However, the following technical drawbacks exist in the process of assembling the heat exchanger: On the one hand, in the prior art (for example, the prior chinese patent CN211425124U provides a tube-fin heat exchanger), a plurality of longer U-shaped heat exchange tubes are generally arranged along the row-column direction, and two adjacent long U-shaped heat exchange tubes are welded by a shorter U-shaped heat exchange tube, so as to form a complete fluid circulation channel. The production mode has a large number of welding spots, and the problem that fluid medium leakage easily occurs at the joint of the welding spots due to weak welding, so that the operation reliability of the heat exchanger is seriously affected; On the other hand, the fin inserting process mainly depends on manual operation, and during actual production, a fin arranging worker holds a plurality of fins, and the heat exchange tubes sequentially penetrate through the fins, so that the quality of the fins is difficult to ensure due to manual operation, the problems of missing rows, staggered rows, wrong fin directions and the like are easily caused, and further the subsequent aluminum heat exchange tubes are unsmooth in tube penetrating, so that the production efficiency is seriously influenced. Disclosure of Invention The invention aims to solve the technical problems that fluid medium leakage is easy to occur at the welding spot connection position of a heat exchange tube due to weak welding, the quality of manual sheet arrangement is difficult to ensure and the production efficiency is low in the prior art, and provides a processing system and a processing technology of a heat exchanger and a tubular fin heat exchanger, which at least advance one step towards overcoming one or more of the problems or at least provide a useful choice for the public. The invention solves the technical problems by adopting the technical scheme that the processing system of the heat exchanger comprises: The pipe bending station is used for bending one heat exchange pipe into a heat exchange calandria in a snake shape; the flattening station is used for flattening the lower end part of the heat exchange calandria; the shaping station is used for shaping the U-shaped bend deformed at the flattened part of the heat exchange calandria; the double-folding station is used for doubling the shaped heat exchange calandria into heat exchange coils with a multi-row structure; The pipe penetrating water swelling station comprises a pipe penetrating mechanism, a fin arranging mechanism and a water swelling mechanism, wherein the fin arranging mechanism is used for sequentially arranging a plurality of radiating fins, the pipe penetrating mechanism is used for inserting a plurality of heat exchange coils which are folded into a plurality of rows into the radiating fins, and the water swelling mechanism is used for swelling and deforming the heat exchange coils and then is in tight contact with the radiating fins. Further, the flattening station comprises a flattening frame, a fixed mold, a pressing mold and a pressing driving mechanism, wherein the pressing driving mechanism is arranged on the flattening frame, the pressing mold is arranged on the moving end of the pressing driving mechanism, the fixed mold is positioned above the pressing mold, a flattening cavity for inse