Novel spiral winding pipe integrated heat exchanger for electric automobile

Abstract

The invention discloses a novel spiral winding pipe integrated heat exchanger for an electric automobile. The novel spiral winding pipe integrated heat exchanger comprises a heat exchanger core assembly, a heat exchanger shell, a first round pipe connector, a second round pipe connector, a first sealing cover, a first right sealing cover, a second sealing cover, a second right sealing cover, a third sealing cover, a third right sealing cover and baffle plates. The heat exchanger core assembly is provided with an inner spiral pipe assembly, a collector plate, a spiral pipe positioning plate and an outer spiral pipe. The inner spiral pipe assembly is provided with a first sleeve, a second inner spiral pipe, a second sleeve, a first inner spiral pipe, a flow blocking pipe and an inner spiral pipe positioning block. The novel spiral winding pipe integrated heat exchanger for the electric automobile has the working characteristics of large flow, high heat exchange efficiency, good sealing performance, safety and reliability, and is an energy-saving, safe and environment-friendly high-tech product; the parts formed by the extruded profiles are beneficial to greatly reducing the cost of the spiral winding pipe integrated heat exchanger, and the spiral winding pipe integrated heat exchanger is particularly suitable for an electric automobile heat management system with higher requirements on modularization, light weight and integration.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicle thermal management systems, and in particular relates to a novel spirally wound tube integrated heat exchanger for electric vehicles. Background Art

[0002] With the rapid development of the new energy vehicle industry, especially the electric vehicle smart cockpit and power battery pack cooling system and electric drive module cooling system, the dynamic performance requirements for electric vehicle thermal management systems are getting higher and higher. The heat exchanger is a key component in the thermal management system of electric vehicles, and its performance significantly affects the efficiency of the thermal management system of electric vehicles. The spirally wound tube integrated heat exchanger has large flow, high heat exchange efficiency, good sealing, and safe and reliable working characteristics. It is one of the devices of energy-saving, safe, and environmentally friendly high-tech electric vehicle thermal management systems; the spirally wound tube integrated heat exchanger has a compact structure, is easy to assemble and maintain, and has a high degree of integration; the spirally wound tube integrated heat exchanger is the best choice for electric vehicle thermal management systems for pure electric vehicles (EVs) and hybrid electric vehicles (HEVs).

[0003] For early heat exchangers, on the one hand, traditional air-cooled heat exchangers have high noise, low output power, and low heat exchange efficiency; on the other hand, they mostly use fin-type heat exchanger designs, which have a large space volume, which is not conducive to the development of electric vehicle thermal management systems towards modularization, lightweight, and integration. In current technical applications, the electric vehicle smart cockpit and power battery pack cooling system and the electric drive module cooling system need to match two or more plate-type liquid-cooled heat exchangers, which increases the failure coefficient of the electric vehicle thermal management system; the plate-type liquid-cooled heat exchanger has poor component compatibility and high manufacturing cost. Therefore, how to provide a multi-circuit spiral-wound tube integrated heat exchanger that can be used for a long time, has a simple assembly process and lower cost has a broader market prospect. Summary of the invention

[0004] In response to the problems arising from the above heat exchangers, the purpose of the present invention is to provide a new type of spirally wound tube integrated heat exchanger for electric vehicles, which can meet the structural strength of the spirally wound tube integrated heat exchanger and the modular and integrated design requirements of the thermal management system, while achieving lower energy consumption, high heat exchange efficiency, low noise, and large flow rate continuous and stable output of the spirally wound tube integrated heat exchanger, thereby ensuring the efficient operation of the thermal management system of the electric vehicle.

[0005] The novel spirally wound tube integrated heat exchanger for electric vehicles comprises a heat exchanger core assembly, a heat exchanger shell, a round tube joint 1, a round tube joint 2, a cover 1, a right cover 1, a cover 2, a right cover 2, a cover 3, a right cover 3, and a baffle; the heat exchanger core assembly is provided with an inner spiral tube assembly, a collecting plate, a spiral tube positioning plate, and an outer spiral tube; wherein the inner spiral tube assembly is provided with a sleeve 1, an inner spiral tube 2, a sleeve 2, an inner spiral tube 1, a flow blocking tube, and an inner spiral tube positioning block; the assembled inner spiral tube assembly and the outer spiral tube are arranged, assembled, and positioned by the spiral tube positioning plate, and assembled in the heat exchanger shell Inside the cavity, a collecting plate is installed on each of the two end faces of the heat exchanger shell cavity; cover three and right cover three are assembled on the two collecting plates in sequence, cover three is located on the collecting plate at the same end face position of the refrigerant inlet pipeline installation hole set on the heat exchanger shell, and right cover three is located on the collecting plate at the same end face position of the refrigerant outlet pipeline installation hole set on the heat exchanger shell, the outer spiral tube, sleeve two and two collecting plates are sealed by brazing, the outer spiral tube, inner spiral tube two, inner spiral tube one and the top plane of cover three and right cover three are sealed by brazing, and cover three and right cover three are welded to the collecting plate and heat exchanger shell Seal; Cover three and right cover three are respectively welded and fixed to the pipes of the refrigerant inlet pipeline and the refrigerant outlet pipeline, one round pipe joint two is assembled and connected on one side of cover one and cover two, two round pipe joints one are assembled and connected on one side of right cover one and right cover two, two round pipe joints one installed on one side of the right cover and one round pipe joint two installed on one side of the cover are distributed on both sides of the heat exchanger shell, similarly, two round pipe joints one installed on the side of the right cover two and one round pipe joint two installed on the side of the cover two are also distributed on both sides of the heat exchanger shell; install cover two on the cover provided by cover three On the nested boss, the top plane of cover two and the outer spiral tube are sealed by brazing welding, the right cover two is installed on the cover nesting boss provided by the right cover three, the top plane of the right cover two and the outer spiral tube are sealed by brazing welding, cover one and right cover one are respectively assembled on the cover nesting boss provided by cover two and right cover two; a refrigerant inlet pipeline mounting hole and a refrigerant outlet pipeline mounting hole are provided on the same side surface of the heat exchanger shell, the refrigerant inlet pipeline mounting hole is assembled and connected with the refrigerant inlet pipeline, and the refrigerant outlet pipeline mounting hole is assembled and connected with the refrigerant outlet pipeline, and four shock-absorbing pad assemblies are pressed on the base of the heat exchanger shell.

[0006] The novel spirally wound tube integrated heat exchanger for electric vehicles is provided with two cooling fluid (such as water, a mixture of water and ethylene glycol or insulated heat transfer oil) circuits, namely, fluid side pipe side circuit one and fluid side pipe side circuit two; and is also provided with two refrigerant fluid (such as R134a, R1234yf or R744) circuits, namely, refrigerant side shell side circuit and refrigerant side pipe side circuit. The fluid side pipe loop 1 flows sequentially through the cooling fluid loop composed of round pipe joint 2, cover 1, outer spiral tube, right cover 1, round pipe joint 1; the fluid side pipe loop 2 flows sequentially through the cooling fluid loop composed of round pipe joint 2, cover 2, inner spiral tube 2, inner spiral tube 1, right cover 2, round pipe joint 1; the refrigerant side shell loop flows sequentially through the refrigerant inlet pipeline, heat exchanger shell, baffle, refrigerant outlet pipeline, and refrigerant fluid loop; the refrigerant side pipe loop flows sequentially through the refrigerant inlet pipeline, cover 3, sleeve 2, right cover 3, refrigerant outlet pipeline, and refrigerant fluid loop. The mechanism is simple and compact, has good compatibility, is easy to assemble, and is convenient to maintain.

[0007] The above technical problems of the present invention are solved by the following technical solutions:

[0008] A novel spirally wound tube integrated heat exchanger for electric vehicles, characterized in that it includes: a round pipe joint 1, a positioning through hole, an overflow hole, a refrigerant outlet pipeline installation hole, a sleeve 1, a refrigerant inlet pipeline installation hole, a round pipe joint 2, a cover 1, a fluid side pipe loop 1, a right cover 1, a preset round pipe joint installation hole position, a cover nesting boss, a cover 2, a fluid side pipe loop 2, a right cover 2, a cover 3, a right cover 3, a heat exchanger shell, a baffle, and an anti-misalignment Corner, baffle flow hole 1, baffle flow hole 2, refrigerant outlet pipeline, collecting plate, heat exchanger core assembly, spiral tube positioning plate, sleeve 2 limiting boss, sleeve 2 limiting groove, inner spiral tube assembly, outer spiral tube, inner spiral tube 2, sleeve 2, inner spiral tube 1, refrigerant inlet pipeline, refrigerant side shell side circuit, refrigerant side tube side circuit, outer spiral tube positioning hole, choke tube, choke tube shrinkage, inner spiral tube positioning block, inner spiral tube sleeve rivet mouth, shock-absorbing pad assembly.

[0009] The inner spiral tube assembly is provided with the sleeve 1, the inner spiral tube 2, the sleeve 2, the inner spiral tube 1, the choke tube, and the inner spiral tube positioning block; the choke tube is provided with the choke tube shrinkage, the two ends of the sleeve 2 are respectively provided with a sleeve 2 limiting boss and the inner spiral tube sleeve riveting mouth, and the inner spiral tube positioning block is provided with the positioning through hole and the overflow hole; the choke tube is assembled inside the inner spiral tube 1, the inner circular cavity of the sleeve 1 is sleeved outside the inner spiral tube 1, and then the two inner spiral tubes are assembled. The spiral tube 2 is symmetrically sleeved on the outer circumference of the sleeve 1, and the inner circular cavity of the sleeve 2 is also sleeved on the outer circumference of the two inner spiral tubes 2. The two ends of the inner spiral tube 2 and the inner spiral tube 1 are respectively aligned and pass through the positioning through holes provided on the two inner spiral tube positioning blocks. The inner spiral tube positioning blocks are respectively pressed into the riveted openings of the inner spiral tube sleeves. The inner spiral tube 2 and the inner spiral tube 1 are positioned and fixed in the circular cavity of the sleeve 2 through the inner spiral tube positioning blocks; the component assembly of the inner spiral tube assembly is completed.

[0010] The heat exchanger core assembly is provided with the inner spiral tube assembly, the spiral tube positioning plate, and the outer spiral tube; the spiral tube positioning plate is provided with the outer spiral tube positioning hole, the sleeve second limiting groove, the baffle is provided with the anti-misalignment angle, the baffle flow hole 1, the baffle flow hole 2, the baffle flow hole 1 is provided with a number of through holes ranging from 6 holes to 18 holes, the baffle flow hole 2 is provided with a number of through holes ranging from 2 holes to 10 holes, the aperture of the baffle flow hole 2 is set to 0.5 times the aperture of the baffle flow hole 1, the hole shapes of the baffle flow hole 1 and the baffle flow hole 2 include circular holes, rectangular holes, polygonal holes, elliptical holes, and U-shaped holes; the inner spiral tube assembly and the outer spiral tube that have been assembled are respectively assembled with a spiral tube positioning plate at both ends, so that the sleeve second limiting boss is snapped into the groove of the sleeve second limiting groove, and the outer spiral The spiral tube is assembled inside the hole of the outer spiral tube positioning hole; the refrigerant inlet pipeline mounting hole and the refrigerant outlet pipeline mounting hole are provided on the same side surface of the heat exchanger shell, and the refrigerant inlet pipeline is assembled and connected in the hole of the refrigerant inlet pipeline mounting hole, and the refrigerant outlet pipeline is assembled and connected in the hole of the refrigerant outlet pipeline mounting hole; the collecting plate is provided with through holes corresponding to the outer spiral tube and the second sleeve for passing through; the spiral tube positioning plate and the components thereon are arranged in sequence and assembled inside the cavity of the heat exchanger shell; the baffle is also press-fitted into the cavity of the heat exchanger shell by aligning the bevel groove provided on the heat exchanger shell with the anti-mistake bevel, and a collecting plate is assembled on each of the two end surfaces of the heat exchanger shell cavity, and the outer spiral tube, the second sleeve and the two collecting plates are sealed by brazing; the assembly of the heat exchanger core assembly and the heat exchanger shell and the collecting plate is completed.

[0011] The right cover 1 is provided with the preset circular pipe joint installation hole, the cover 2, the right cover 2, the cover 3, and the right cover 3 are provided with the cover nesting boss, the cover 3 and the right cover 3 are provided with through holes corresponding to the outer spiral tube, the inner spiral tube 2, and the inner spiral tube 1 passing through, and the cover 2 and the right cover 2 are provided with through holes corresponding to the outer spiral tube passing through; one side side of the cover 1 and the cover 2 are respectively assembled and connected with a circular pipe joint 2, and one side of the right cover 1 and the right cover 2 is ... Two of the round tube joints 1 are assembled and connected on the side surfaces, the two round tube joints 1 installed on one side surface of the right cover and the round tube joint 2 assembled on one side surface of the cover are distributed on both sides of the heat exchanger shell. Similarly, the two round tube joints 1 installed on the side surface of the right cover 2 and the round tube joint 2 assembled on the side surface of the cover 2 are also distributed on both sides of the heat exchanger shell; the cover 3 and the right cover 3 are assembled on the two collecting plates in sequence, and the cover 3 is located at the The right cover three is located on the collecting plate at the same end face position as the refrigerant inlet pipeline mounting hole on the heat exchanger shell, and the outer spiral tube, the inner spiral tube two, the inner spiral tube one, and the top planes of the cover three and the right cover three are sealed by brazing. The cover three and the right cover three are welded and sealed with the collecting plate and the heat exchanger shell; the cover three and the right cover three are respectively connected to the refrigerant inlet pipeline and the refrigerant outlet pipeline. The pipeline is welded and fixed; the cover two is installed on the cover nesting boss provided by the cover three, and the top plane of the cover two and the outer spiral tube are sealed by brazing; the right cover two is installed on the cover nesting boss provided by the right cover three, and the top plane of the right cover two and the outer spiral tube are sealed by brazing; the cover one and the right cover one are respectively assembled on the cover nesting bosses provided by the cover two and the right cover two, and four shock-absorbing pad assemblies are pressed on the base of the heat exchanger shell.

[0012] A novel spirally wound tube integrated heat exchanger for electric vehicles is provided with two cooling fluid (such as water, a mixture of water and ethylene glycol or insulated heat transfer oil) circuits, which refer to the fluid side pipe side circuit one and the fluid side pipe side circuit two; and is also provided with two refrigerant fluid (such as R134a, R1234yf or R744) circuits, which refer to the refrigerant side shell side circuit and the refrigerant side pipe side circuit.

[0013] The fluid side pipe loop 1 flows sequentially through the cooling fluid loop composed of the round pipe joint 2, the cover 1, the outer spiral tube, the right cover 1, and the round pipe joint 1;

[0014] The second fluid side pipe loop flows sequentially through the second round pipe joint, the second cover, the second inner spiral pipe, the first inner spiral pipe, the second right cover, and the first round pipe joint to form a cooling fluid loop;

[0015] The refrigerant side shell circuit sequentially flows through the refrigerant inlet pipeline, the heat exchanger shell, the baffle, and the refrigerant outlet pipeline to form a refrigerant fluid circuit;

[0016] The refrigerant side pipe circuit flows in sequence through the refrigerant inlet pipeline, the third cover, the second sleeve, the third right cover, and the refrigerant outlet pipeline to form a refrigerant fluid circuit;

[0017] The cooling fluid circuit of the fluid side tube circuit one and the refrigerant fluid circuit of the refrigerant side shell circuit form a closed-loop heat exchange circuit, and the cooling fluid circuit of the fluid side tube circuit two and the refrigerant fluid circuit of the refrigerant side tube circuit form a closed-loop heat exchange circuit.

[0018] The present invention greatly reduces the number of heat exchangers and related components that need to be matched in the thermal management system module. The design uses components that are suitable for mass production, have good versatility and are composed of extruded profiles, which is conducive to the development of the thermal management system in the direction of modularization and integration, and greatly reduces the cost of the thermal management system module.

[0019] In summary, the present invention has the following beneficial effects:

[0020] 1. Innovative design of the multi-layer nested structure of spirally wound tubes, which has excellent vibration resistance, adopts the technical solution of the second sleeve integral annular rigid support of the spirally wound tubes inside and outside, eliminates the fatigue damage caused by the flow impact of the cooling fluid and the vibration of the mechanism; realizes the low-noise continuous and stable operation of the spirally wound tube integrated heat exchanger;

[0021] 2. The novel structure of the spirally wound pipe provided by the present invention is characterized in that, through the novel structure design of the spirally wound pipe, the cooling fluid continuously undergoes spiral deflection during the flow along the pipe wall of the spirally wound pipe, thereby forming a turbulent state. Fluids in different flow states in different parts participate in heat exchange, which greatly improves the heat transfer coefficient and greatly improves the heat exchange efficiency of the spirally wound pipe integrated heat exchanger;

[0022] 3. The spirally wound tube multi-layer nested structure design is adopted. Compared with the straight-through heat exchange tube of the same volume, the spirally wound tube significantly increases the length of the heat exchange tube, increases the heat exchange area, and increases the time for the fluid to participate in heat exchange in the spirally wound tube, further improving the heat exchange efficiency of the spirally wound tube integrated heat exchanger;

[0023] 4. The inner spiral tube component of the cooling fluid circuit of the fluid side pipe loop 2 of the present invention is immersed in the refrigerant fluid circuit of the refrigerant side shell loop, and the outer spiral tube component of the cooling fluid circuit of the fluid side pipe loop 1 passes through the refrigerant fluid circuit of the refrigerant side pipe loop. The cooling fluid circuits of the fluid side pipe loop 1 and the fluid side pipe loop 2 indirectly form a closed-loop heat exchange circuit with each other, further improving the heat exchange efficiency of the spirally wound tube integrated heat exchanger;

[0024] 5. The present invention can easily expand the required heat exchange power parameters of the spirally wound tube integrated heat exchanger by only changing the axial length of the heat exchanger shell and the heat exchanger core assembly. The product development cycle is short, the versatility of related parts is good, the complexity of product assembly is reduced, and the qualified rate of finished product assembly is significantly improved;

[0025] 6. The present invention greatly reduces the number of heat exchangers and related parts required to be configured in the thermal management system module. The design adopts parts that are suitable for mass production, have good versatility and are made of extruded profiles, which is conducive to significantly reducing the cost of the thermal management system module;

[0026] 7. The present invention connects and assembles the circular pipe joint 1 through the preset circular pipe joint installation hole position, thereby increasing the number of cooling fluid circuit output ports;

[0027] 8. The present invention has a compact structure, good sealing, high integration and low cost, and is particularly suitable for electric vehicle thermal management systems with higher requirements for modularization, lightness and integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0029] Figure 1 It is an exploded schematic diagram of the three-dimensional assembly structure of the present invention;

[0030] Figure 2 It is a cross-sectional top view of the overall assembly structure of the present invention and a flow direction schematic diagram of the fluid side pipe loop;

[0031] Figure 3 It is a cross-sectional top view of the overall assembly structure of the present invention and a schematic diagram of the second flow direction of the fluid side pipe loop;

[0032] Figure 4 It is a schematic diagram of the overall assembly front structure of the present invention and the flow direction of the refrigerant side shell side circuit;

[0033] Figure 5 It is a schematic diagram of the overall assembly front structure of the present invention and the refrigerant side pipe loop flow direction;

[0034] Figure 6 This is a schematic diagram of the assembly structure of the heat exchanger core assembly of the present invention;

[0035] Figure 7 This is a schematic diagram of the assembly structure of the inner spiral tube assembly of the present invention;

[0036] Figure 8 It is a schematic diagram of the heat exchanger shell structure and the installation arrangement of the baffle plate described in the present invention.

[0037] In the attached figure: 1. Round pipe joint 1; 2. Positioning through hole; 3. Overflow hole; 5. Refrigerant outlet pipe installation hole; 6. Casing 1; 8. Refrigerant inlet pipe installation hole; 9. Round pipe joint 2; 10. Cover 1; 11. Fluid side pipe loop 1; 12. Right cover 1; 13. Preset round pipe joint installation hole position; 18. Cover nesting boss; 20. Cover 2; 21. Fluid side pipe loop 2; 22. Right cover 2; 30. Cover 3; 31. Right cover 3; 40. Heat exchanger shell; 41. Baffle; 42. Anti-mistake bevel; 47. Baffle flow hole 1; 48. Baffle flow hole Orifice 2; 50. Refrigerant outlet pipeline; 60. Collecting plate; 70. Heat exchanger core assembly; 71. Spiral tube positioning plate; 72. Casing 2 limiting boss; 73. Casing 2 limiting groove; 75. Inner spiral tube assembly; 76. Outer spiral tube; 77. Inner spiral tube 2; 78. Casing 2; 79. Inner spiral tube 1; 80. Refrigerant inlet pipeline; 81. Refrigerant side shell side loop; 82. Refrigerant side tube side loop; 85. Outer spiral tube positioning hole; 86. Choke tube; 87. Choke tube shrinkage; 88. Inner spiral tube positioning block; 89. Inner spiral tube casing riveting mouth; 90. Shock pad assembly. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements and numerical values ​​of the components and steps described in these embodiments do not limit the scope of the present invention.

[0039] The following description of at least one exemplary embodiment is in fact merely illustrative and is not intended to be any limitation to the present invention and its application or use. In all examples shown and discussed herein, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, no further discussion is required in subsequent drawings.

[0040] The terms "including", "having", "having", "having", "having", "having", "having", "having", "having", "having", "having", "having", "having", and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus including a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or apparatuses;

[0041] In the description of the present invention, it should be understood that the terms "middle", "length", "upper", "side", "both sides", "axial", "circumference", "annular", "closed loop", "loop", "right", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 cannot be understood as a limitation of the present invention; unless otherwise clearly specified and limited; in addition, the terms "installation", "assembly", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The present invention discloses a novel spirally wound tube integrated heat exchanger for electric vehicles, comprising a round tube joint 1, a positioning through hole 2, an overflow hole 3, a refrigerant outlet pipeline installation hole 5, a sleeve 6, a refrigerant inlet pipeline installation hole 8, a round tube joint 9, a cover 10, a fluid side pipe loop 11, a right cover 12, a preset round tube joint installation hole position 13, a cover nesting boss 18, a cover 20, a fluid side pipe loop 21, a right cover 22, a cover 30, a right cover 31, a heat exchanger shell 40, a baffle 41, an anti-mistake bevel 42, a baffle over Flow hole one 47, baffle flow hole two 48, refrigerant outlet pipeline 50, collecting plate 60, heat exchanger core assembly 70, spiral tube positioning plate 71, sleeve two limiting boss 72, sleeve two limiting groove 73, inner spiral tube assembly 75, outer spiral tube 76, inner spiral tube two 77, sleeve two 78, inner spiral tube one 79, refrigerant inlet pipeline 80, refrigerant side shell side circuit 81, refrigerant side tube side circuit 82, outer spiral tube positioning hole 85, choke tube 86, choke tube shrinkage 87, inner spiral tube positioning block 88, inner spiral tube sleeve rivet mouth 89, shock-absorbing pad assembly 90.

[0043] The inner spiral tube assembly 75 shown in the drawings of the present invention is provided with a sleeve 1 6, an inner spiral tube 2 77, a sleeve 2 78, an inner spiral tube 1 79, a choke tube 86, and an inner spiral tube positioning block 88; the choke tube 86 is provided with a choke tube shrinkage 87, and both ends of the sleeve 2 78 are respectively provided with a sleeve 2 limiting boss 72 and an inner spiral tube sleeve riveting 89, and the inner spiral tube positioning block 88 is provided with a positioning through hole 2 and an overflow hole 3;

[0044] The heat exchanger core assembly 70 shown in the drawings of the present invention is provided with an inner spiral tube assembly 75, a spiral tube positioning plate 71, and an outer spiral tube 76; the spiral tube positioning plate 71 is provided with an outer spiral tube positioning hole 85 and a second sleeve limiting groove 73, and a refrigerant inlet pipeline installation hole 8 and a refrigerant outlet pipeline installation hole 5 are provided on the same side of the heat exchanger shell 40;

[0045] The baffle plate 41 shown in the drawings of the present invention is provided with an anti-misalignment angle 42, a baffle plate flow hole 1 47, and a baffle plate flow hole 2 48. The number of through holes provided in the baffle plate flow hole 1 47 ranges from 6 holes to 18 holes, and the number of through holes provided in the baffle plate flow hole 2 48 ranges from 2 holes to 10 holes. The aperture of the baffle plate flow hole 2 48 is set to 0.5 times the aperture of the baffle plate flow hole 1 47. The hole shapes of the baffle plate flow hole 1 47 and the baffle plate flow hole 2 48 include circular holes, rectangular holes, polygonal holes, elliptical holes, and U-shaped holes.

[0046] The right cover 12 shown in the drawings of the present invention is provided with a preset circular pipe joint installation hole 13, the cover 20, the right cover 22, the cover 30, and the right cover 31 are provided with a cover nesting boss 18, the cover 30 and the right cover 31 are provided with through holes corresponding to the outer spiral tube 76, the inner spiral tube 2 77, and the inner spiral tube 1 79 passing through, and the cover 20 and the right cover 22 are provided with through holes corresponding to the outer spiral tube 76 passing through;

[0047] As shown in the drawings of the present invention, one side of the cover 10 and the cover 20 is respectively assembled and connected with a round pipe joint 29, and one side of the right cover 12 and the right cover 22 is respectively assembled and connected with two round pipe joints 1. The two round pipe joints 1 installed on the side of the right cover 12 and the round pipe joint 29 assembled on the side of the cover 10 are distributed on both sides of the heat exchanger shell 40. Similarly, the two round pipe joints 1 installed on the side of the right cover 22 and the round pipe joint 29 assembled on the side of the cover 20 are also distributed on both sides of the heat exchanger shell 40.

[0048] A novel spirally wound tube integrated heat exchanger for electric vehicles shown in the attached drawings of the present invention is provided with two cooling fluid (such as water, a mixture of water and ethylene glycol or insulating heat transfer oil) circuits, namely, a fluid side pipe side circuit 11 and a fluid side pipe side circuit 21; and is also provided with two refrigerant fluid (such as R134a, R1234yf or R744) circuits, namely, a refrigerant side shell side circuit 81 and a refrigerant side pipe side circuit 82.

[0049] The fluid side pipe circuit 11 flows sequentially through the cooling fluid circuit composed of the round pipe joint 2 9, the cover 10, the outer spiral tube 76, the right cover 12, and the round pipe joint 1;

[0050] The fluid side pipe circuit 21 flows sequentially through the cooling fluid circuit composed of the round pipe joint 29, the cover 20, the inner spiral tube 277, the inner spiral tube 179, the right cover 22, and the round pipe joint 1;

[0051] The refrigerant side shell side circuit 81 flows sequentially through the refrigerant fluid circuit composed of the refrigerant inlet pipeline 80, the heat exchanger shell 40, the baffle 41, and the refrigerant outlet pipeline 50;

[0052] The refrigerant side pipe loop 82 flows in sequence through the refrigerant inlet pipeline 80, the cover three 30, the sleeve two 78, the right cover three 31, and the refrigerant outlet pipeline 50 to form a refrigerant fluid circuit;

[0053] The cooling fluid circuit of the fluid side tube circuit 11 and the refrigerant fluid circuit of the refrigerant side shell circuit 81 constitute a closed-loop heat exchange circuit, and the cooling fluid circuit of the fluid side tube circuit 21 and the refrigerant fluid circuit of the refrigerant side tube circuit 82 constitute a closed-loop heat exchange circuit.

[0054] Furthermore, the choke tube 86 is assembled inside the inner spiral tube 1 79, the inner circular cavity of the sleeve 1 6 is sleeved on the outside of the inner spiral tube 1 79, and then the two inner spiral tubes 2 77 are symmetrically sleeved on the outer circumference of the sleeve 1 6, and the inner circular cavity of the sleeve 2 78 is also sleeved on the outer circumference of the two inner spiral tubes 2 77, and the two ends of the inner spiral tube 2 77 and the inner spiral tube 1 79 are respectively aligned and pass through the positioning through holes 2 provided on the two inner spiral tube positioning blocks 88, and the inner spiral tube positioning blocks 88 are respectively pressed into the riveted openings 89 of the inner spiral tube sleeves, and the inner spiral tubes 2 77 and the inner spiral tube 1 79 are positioned and fixed in the circular cavity of the sleeve 2 78 through the inner spiral tube positioning blocks 88; the component assembly of the inner spiral tube assembly 75 is completed.

[0055] Further, a spiral tube positioning plate 71 is respectively assembled at both ends of the assembled inner spiral tube assembly 75 and the outer spiral tube 76, so that the second limiting boss 72 of the sleeve is buckled inside the groove of the second limiting groove 73 of the sleeve, and the outer spiral tube 76 is assembled inside the hole of the outer spiral tube positioning hole 85; the refrigerant inlet pipeline installation hole 8 is assembled in the hole to connect the refrigerant inlet pipeline 80, and the refrigerant outlet pipeline installation hole 5 is assembled in the hole to connect the refrigerant outlet pipeline 50; the collecting plate 60 is provided with through holes corresponding to the outer spiral tube 76 and the second sleeve 78 for passing through;

[0056] Furthermore, the spiral tube positioning plate 71 and the components thereon are arranged in sequence and assembled inside the cavity of the heat exchanger shell 40; the baffle plate 41 is also pressed into the cavity of the heat exchanger shell 40 by aligning the anti-mistake bevel 42 with the bevel groove provided on the heat exchanger shell 40, and a collecting plate 60 is assembled on each of the two end surfaces of the cavity of the heat exchanger shell 40. The outer spiral tube 76, the second sleeve 78 and the two collecting plates 60 are sealed by brazing; the assembly of the heat exchanger core assembly 70 and the heat exchanger shell 40 and the collecting plates 60 is completed.

[0057] Further, the cover three 30 and the right cover three 31 are assembled on the two collecting plates 60 in sequence, the cover three 30 is located on the collecting plate 60 at the same end surface position as the refrigerant inlet pipeline mounting hole 8 provided on the heat exchanger shell 40, and the right cover three 31 is located on the collecting plate 60 at the same end surface position as the refrigerant outlet pipeline mounting hole 5 provided on the heat exchanger shell 40, the outer spiral tube 76, the inner spiral tube two 77, the inner spiral tube one 79 and the top plane of the cover three 30 and the right cover three 31 are sealed by brazing, the cover three 30 and the right cover three 31 are welded and sealed with the collecting plate 60 and the heat exchanger shell 40, and the cover three 30 and the right cover three 31 are respectively welded and fixed to the pipes of the refrigerant inlet pipeline 80 and the refrigerant outlet pipeline 50;

[0058] Furthermore, the cover 20 is installed on the cover nesting boss 18 provided on the cover 30, and the top plane of the cover 20 and the outer spiral tube 76 are sealed by brazing. The right cover 22 is installed on the cover nesting boss 18 provided on the right cover 31, and the top plane of the right cover 22 and the outer spiral tube 76 are sealed by brazing. The cover 10 and the right cover 12 are respectively assembled on the cover nesting boss 18 provided on the cover 20 and the right cover 22, and four shock-absorbing pad assemblies 90 are pressed on the base of the heat exchanger shell 40.

[0059] The design of the present invention uses parts with good versatility and formed of extruded profiles, which have good compatibility and are easy to assemble, thereby reducing the complexity of product assembly and significantly improving the qualified rate of finished product assembly.

[0060] In addition to the above, although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention; the above embodiments may be modified without departing from the scope and spirit of the present invention, but any technical solution formed by equivalent substitution or equivalent transformation shall fall within the scope of protection required by the present invention, and the scope of the present invention shall be defined by the appended claims.

Claims

1. A novel spirally wound tube integrated heat exchanger for electric vehicles, characterized in that: include: Round pipe joint 1, positioning through hole, overflow hole, refrigerant outlet pipeline installation hole, sleeve 1, refrigerant inlet pipeline installation hole, round pipe joint 2, cover 1, fluid side pipe loop 1, right cover 1, preset round pipe joint installation hole position, cover nesting boss, cover 2, fluid side pipe loop 2, right cover 2, cover 3, right cover 3, heat exchanger shell, baffle, anti-mistake bevel, baffle flow hole 1, baffle flow hole 2, refrigerant outlet pipeline, collecting plate, heat exchanger core assembly, spiral tube positioning plate, sleeve 2 limiting boss, sleeve 2 limiting groove, inner spiral tube assembly, outer spiral tube, inner spiral tube 2, sleeve 2, inner spiral tube 1, refrigerant inlet pipeline, refrigerant side shell loop, refrigerant side pipe loop, outer spiral tube positioning hole, choke tube, choke tube shrinkage, inner spiral tube positioning block, inner spiral tube sleeve riveting mouth, shock-absorbing pad assembly; The inner spiral tube assembly is provided with the sleeve 1, the inner spiral tube 2, the sleeve 2, the inner spiral tube 1, the choke tube, and the inner spiral tube positioning block; the choke tube is provided with the choke tube shrinkage, the two ends of the sleeve 2 are respectively provided with a sleeve 2 limiting boss and the inner spiral tube sleeve riveting mouth, and the inner spiral tube positioning block is provided with the positioning through hole and the overflow hole; The heat exchanger core assembly is provided with the inner spiral tube assembly, the spiral tube positioning plate, and the outer spiral tube; the spiral tube positioning plate is provided with the outer spiral tube positioning hole, the second limiting groove of the sleeve, and the baffle is provided with the anti-misalignment angle, the baffle flow hole 1, and the baffle flow hole 2; The refrigerant inlet pipe installation hole and the refrigerant outlet pipe installation hole are provided on the same side of the heat exchanger shell; four shock-absorbing pad assemblies are press-fitted on the base of the heat exchanger shell; the collecting plate is provided with through holes corresponding to the outer spiral pipe and the second sleeve for passing through; The right cover 1 is provided with the preset circular pipe joint installation hole position, the cover 2, the right cover 2, the cover 3, and the right cover 3 are provided with the cover nesting boss, the cover 3 and the right cover 3 are provided with through holes corresponding to the outer spiral tube, the inner spiral tube 2, and the inner spiral tube 1 passing through, and the cover 2 and the right cover 2 are provided with through holes corresponding to the outer spiral tube passing through; one side surface of the cover 1 and the cover 2 are respectively assembled and connected with one circular pipe joint 2, and one side surface of the right cover 1 and the right cover 2 are respectively assembled and connected with two circular pipe joints 1; A novel spirally wound tube integrated heat exchanger for electric vehicles is provided with two cooling fluid circuits, namely the fluid side tube circuit one and the fluid side tube circuit two; and is also provided with two refrigerant fluid circuits, namely the refrigerant side shell circuit and the refrigerant side tube circuit.

2. A novel spirally wound tube integrated heat exchanger for electric vehicles according to claim 1, characterized in that: The number of through holes provided in the baffle plate flow hole 1 ranges from 6 holes to 18 holes, the number of through holes provided in the baffle plate flow hole 2 ranges from 2 holes to 10 holes, the aperture of the baffle plate flow hole 2 is set to 0.5 times the aperture of the baffle plate flow hole 1, and the hole shapes of the baffle plate flow hole 1 and the baffle plate flow hole 2 include circular holes, rectangular holes, polygonal holes, elliptical holes, and U-shaped holes.

3. The novel spirally wound tube integrated heat exchanger for electric vehicles according to claim 1 is characterized in that: The two round tube joints 1 installed on one side of the right cover and the one round tube joint 2 assembled on one side of the cover are distributed on both sides of the heat exchanger shell. Similarly, the two round tube joints 1 installed on the second side of the right cover and the one round tube joint 2 assembled on the second side of the cover are also distributed on both sides of the heat exchanger shell.

4. The novel spirally wound tube integrated heat exchanger for electric vehicles according to claim 1 is characterized in that: The fluid side pipe circuit 1 flows sequentially through the cooling fluid circuit composed of the round pipe joint 2, the cover 1, the outer spiral tube, the right cover 1, and the round pipe joint 1.

5. The novel spirally wound tube integrated heat exchanger for electric vehicles according to claim 1 is characterized in that: The fluid side pipe circuit two flows in sequence through the cooling fluid circuit composed of the round pipe joint two, the cover two, the inner spiral tube two, the inner spiral tube one, the right cover two, and the round pipe joint one.

6. The novel spirally wound tube integrated heat exchanger for electric vehicles according to claim 1 is characterized in that: The refrigerant side shell circuit flows sequentially through the refrigerant inlet pipeline, the heat exchanger shell, the baffle, and the refrigerant outlet pipeline to form a refrigerant fluid circuit.

7. The novel spirally wound tube integrated heat exchanger for electric vehicles according to claim 1 is characterized in that: The refrigerant side pipe circuit flows sequentially through the refrigerant fluid circuit composed of the refrigerant inlet pipeline, the third cover, the second sleeve, the third right cover, and the refrigerant outlet pipeline.

8. The novel spirally wound tube integrated heat exchanger for electric vehicles according to claim 1 is characterized in that: The cooling fluid circuit of the fluid side tube circuit one and the refrigerant fluid circuit of the refrigerant side shell circuit form a closed-loop heat exchange circuit, and the cooling fluid circuit of the fluid side tube circuit two and the refrigerant fluid circuit of the refrigerant side tube circuit form a closed-loop heat exchange circuit.

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