Pipeline integration module, outdoor unit and heating and ventilation equipment

Abstract

According to the pipeline integration module, the outdoor unit and the heating and ventilation equipment, welding flux is arranged between a first stainless steel plate and a second stainless steel plate, then a stainless steel transfer pipe is inserted into a transfer opening defined by a turned-over edge, and the welding flux is arranged between the turned-over edge and the stainless steel transfer pipe; due to the fact that the first stainless steel plate, the second stainless steel plate and the stainless steel adapter pipe are all made of stainless steel, the assembled pipeline integration module can be placed in a vacuum furnace to be welded, and a first welding flux layer can be formed between the first stainless steel plate and the second stainless steel plate. Meanwhile, a second solder layer can be formed in the gap between the transfer opening defined by the stainless steel transfer pipe and the flange, and the first solder layer, the first stainless steel plate and the second stainless steel plate can jointly define the containing cavity communicated with the transfer opening, so that welding of the pipeline integration module can be completed only by passing through a vacuum furnace once, the welding cost can be reduced, and the welding efficiency is improved. And the welding quality can be improved through one-time welding.

Description

Technical Field

[0001] The present application relates to the technical field of heating, ventilation and air conditioning (HVAC) equipment, and specifically refers to a pipeline integration module, an outdoor unit and HVAC equipment. Background Art

[0002] Currently, HVAC equipment usually uses a pipeline integration module to connect components such as filters, oil separators and valve bodies to form a circulation loop.

[0003] However, in the related art, the main body of the pipeline integration module is usually made of stainless steel, while the stainless steel adapter pipe on the pipeline integration module is usually made of red copper. As a result, it is necessary to first pass the main body of the pipeline integration module through a vacuum furnace for welding, and then pass through a tunnel furnace to weld the red copper joint. The cost of the two weldings is high and the welding quality is low. Summary of the Utility Model

[0004] The main purpose of the present application is to provide a pipeline integration module, an outdoor unit and HVAC equipment, aiming to solve the technical problems of high welding cost and low welding quality of the pipeline integration module.

[0005] On the one hand, the technical solution provided by the present application to solve the above technical problems is as follows: A pipeline integration module for HVAC equipment, which includes a first stainless steel plate, a second stainless steel plate, a first solder layer, a stainless steel adapter pipe and a second solder layer. The first stainless steel plate includes a flanging, and the flanging defines an adapter opening. The second stainless steel plate is covered and arranged with the first stainless steel plate. The first solder layer is connected between the first stainless steel plate and the second stainless steel plate, and the first solder layer, the first stainless steel plate and the second stainless steel plate jointly define a receiving cavity communicating with the adapter opening. The stainless steel adapter pipe is inserted into the adapter opening, and the second solder layer fills and seals the gap between the outer wall surface of the stainless steel adapter pipe and the wall surface of the flanging defining the adapter opening.

[0006] In some embodiments, the stainless steel adapter pipe includes a pipeline main body and a positioning portion protruding from the outer surface of the pipeline main body. The pipeline main body is inserted into the adapter opening. The flanging has a first end face facing the positioning portion, and the plane where the first end face is located is arranged at an angle with the axis of the adapter opening. Part of the second solder layer is located between the positioning portion and the first end face.

[0007] In some embodiments, along the axial direction of the adapter opening, the distance between the positioning portion and the first end face is L, and L satisfies: 0.2 mm ≤ L ≤ 2 mm.

[0008] In some embodiments, in a direction perpendicular to the axial direction of the transition opening, a gap γ is provided between an outer wall surface of the stainless steel transition tube and a wall surface of the transition opening, and γ satisfies: 0mm<γ≤0.1mm.

[0009] In some embodiments, along the overlapping direction of the first stainless steel plate and the second stainless steel plate, the thickness of the first solder layer is h, and h satisfies: 0.03 mm≤h≤0.3 mm.

[0010] In some embodiments, the first stainless steel plate includes a first flat portion and a first convex portion protruding from the first flat portion, the flange is protruding from the first convex portion, and the second stainless steel plate includes a second flat portion and a second convex portion protruding from the second flat portion, wherein the first flat portion and the second flat portion are stacked, the first solder layer is connected between the first flat portion and the second flat portion, the first convex portion and the second convex portion are arranged opposite to each other, and the first solder layer, the first convex portion and the second convex portion jointly define the accommodating cavity.

[0011] In some embodiments, the distance from the wall of the accommodating cavity to the axis of the transition opening is d, and d gradually increases in the direction from the wall of the transition opening toward the wall of the accommodating cavity, and the second solder layer extends to connect to the wall of the accommodating cavity.

[0012] In some embodiments, a portion of the accommodating cavity is defined as a transition convex arc surface adjacent to the wall surface of the transfer opening, and another portion of the accommodating cavity is defined as a flow-guiding concave arc surface away from the wall surface of the transfer opening. The flow-guiding concave arc surface is connected to the transition convex arc surface, and the transition convex arc surface is convex toward the side where the axis of the transfer opening is located, and the flow-guiding concave arc surface is concave toward the side where the axis of the transfer opening is located. The second solder layer is connected to the transition convex arc surface and extends to connect to the flow-guiding concave arc surface.

[0013] In some embodiments, the pipeline integration module further includes a refrigerant pipe, and the refrigerant pipe is connected to the stainless steel transfer pipe; or, the stainless steel transfer pipe forms the refrigerant pipe.

[0014] On the other hand, the present application further provides a technical solution to solve the above technical problems as follows: an outdoor unit, whose pipeline is connected to the indoor heat exchanger of the indoor unit to form a refrigerant circulation, and the outdoor unit includes the pipeline integrated module as described above.

[0015] Furthermore, the present application further provides a technical solution to solve the above technical problems as follows: a HVAC device, the HVAC device comprising an outdoor unit as described above, and an indoor unit, and a refrigerant pipe connecting the outdoor unit and the indoor unit.

[0016] The beneficial effects of the pipeline integration module, outdoor unit, and heating, ventilation, and air conditioning (HVAC) equipment according to the embodiments of the present application are as follows: By covering the first stainless steel plate and the second stainless steel plate together, and setting solder between the first stainless steel plate and the second stainless steel plate, then inserting the stainless steel adapter pipe into the adapter opening defined by the flanging, and also setting solder between the flanging and the stainless steel adapter pipe. Since the first stainless steel plate, the second stainless steel plate, and the stainless steel adapter pipe are all made of stainless steel, the assembled pipeline integration module can be placed in a vacuum furnace for welding, so that a first solder layer can be formed between the first stainless steel plate and the second stainless steel plate to weld the first stainless steel plate and the second stainless steel plate together. At the same time, the gap between the outer wall surface of the stainless steel adapter pipe and the wall surface of the adapter opening defined by the flanging can form a second solder layer to weld and fix the stainless steel adapter pipe at the adapter opening. The first solder layer, the first stainless steel plate, and the second stainless steel plate can jointly define a receiving cavity communicating with the adapter opening. Therefore, only one pass through the vacuum furnace is required to complete the welding of the pipeline integration module, which can reduce the welding cost, and the one-time completion of welding can improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 FIG. 9 is a schematic perspective view of a pipeline integration module provided by an embodiment of the present application;

[0019] Figure 2 FIG. 13 is a schematic cross-sectional view of a pipeline integration module provided by an embodiment of the present application;

[0020] Figure 3 FIG. 17 is a schematic cross-sectional view of a stainless steel adapter pipe inserted into an adapter opening provided by an embodiment of the present application;

[0021] Figure 4 FIG. 21 is a schematic cross-sectional view of a stainless steel adapter pipe welded to an adapter opening provided by an embodiment of the present application;

[0022] Figure 5 FIG. 25 is an exploded schematic view of a pipeline integration module provided by an embodiment of the present application;

[0023] Figure 6 FIG. 29 is a schematic perspective view of a stainless steel adapter pipe provided by an embodiment of the present application.

[0024] Reference Numerals in the Drawings:

[0025] 100. Pipeline integrated module; 1. Module body; 11. Protrusion; 12. Flanging; 13. First stainless steel plate; 131. First flat portion; 132. First protrusion; 14. Second stainless steel plate; 141. Second flat portion; 142. Second protrusion; 101. Accommodation cavity; 102. Transfer opening; 103. Concave guide arc surface; 104. Flanging wall surface; 105. Transition convex arc surface; 106. First end surface; 107. Solder accommodating space; 2. Stainless steel transfer tube; 21. Pipeline body; 3. First solder layer; 4. Second solder layer; 5. Solder ring; 6. Positioning portion. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0028] like Figures 1 to 3 As shown, it is a schematic diagram of the structure of a pipeline integrated module 100 provided by an embodiment of the present application. The pipeline integrated module 100 may include a module body 1 and a stainless steel transfer tube 2, and the module body 1 includes a first stainless steel plate 13 and a second stainless steel plate 14. The first stainless steel plate 13 can be covered with the second stainless steel plate 14, and solder can be placed between the first stainless steel plate 13 and the second stainless steel plate. Preferably, the solder between the first stainless steel plate 13 and the second stainless steel plate 14 is a sheet structure. The first stainless steel plate 13 may include a flange 12, and the flange 12 defines a transfer opening 102 (see Figure 5 ), the stainless steel adapter tube 2 can be plugged into the adapter opening 102. Similarly, solder can be set between the flange 12 and the stainless steel adapter tube 2. Preferably, the solder at the stainless steel adapter tube 2 is a welding ring 5, and the welding ring 5 is sleeved on the outer wall surface of the stainless steel adapter tube 2 to complete the assembly of the pipeline integrated module 100.

[0029] Combination Figure 4, specifically, since the first stainless steel plate 13, the second stainless steel plate 14, and the stainless steel adapter pipe 2 are all made of stainless steel, when welding, the assembled pipeline integration module 100 can be placed in a vacuum furnace for welding, so that a first solder layer 3 can be formed between the first stainless steel plate 13 and the second stainless steel plate 14 to weld the first stainless steel plate 13 and the second stainless steel plate 14 together. At the same time, a second solder layer 4 can be formed in the gap between the outer wall surface of the stainless steel adapter pipe 2 and the wall surface defining the transfer opening 102 of the flanging 12 to weld and fix the stainless steel adapter pipe 2 at the transfer opening 102. The first solder layer 3, the first stainless steel plate 13, and the second stainless steel plate 14 can jointly define a receiving cavity 101 communicating with the transfer opening 102.

[0030] Therefore, since the first stainless steel plate 13, the second stainless steel plate 14, and the stainless steel adapter pipe 2 are all made of stainless steel, when welding, only one pass through the vacuum furnace is required to complete the welding of the pipeline integration module 100, and one-time welding forming can be achieved. Compared with the stainless steel adapter pipe 2 made of copper material, the welding cost can be reduced, and one-time welding can improve the welding quality.

[0031] Optionally, the first solder layer 3 and the second solder layer 4 are made of the same material. Preferably, the first solder layer 3 and the second solder layer 4 are both formed by brazing, so that the melting points of the first solder layer 3 and the second solder layer 4 are the same. Thus, when the assembled pipeline integration module 100 is placed in a vacuum furnace for welding, the first solder layer 3 and the second solder layer 4 can be formed simultaneously at the same furnace temperature, which can improve the welding quality.

[0032] As Figure 5 and Figure 6 shown, in some embodiments, the stainless steel adapter pipe 2 may include a pipe body 21 and a positioning portion 6 protruding from the outer surface of the pipe body 21. The positioning portion 6 may be a convex point protruding from the outer surface of the pipe body 21 or a convex ring protruding from the outer surface of the pipe body 21.

[0033] The flange 12 has a first end face 106 that is set toward the positioning portion 6, and the plane where the first end face 106 is located is set at an angle to the axis of the transfer opening 102. Preferably, the plane where the first end face 106 is located is perpendicular to the axis of the transfer opening 102, so that the solder can be set on the lower side of the positioning portion 6, and the solder is close to the first end face 106. After automated welding, the solder melts to form a molten solder. The molten solder can flow from between the positioning portion 6 and the first end face 106 into between the inner wall surface of the transfer opening 102 and the outer wall surface of the stainless steel transfer tube 2, and form a second solder layer 4. The second solder layer 4 can firmly connect the stainless steel transfer tube 2 and the transfer opening 102 together. By setting the positioning portion 6, the solder can be placed conveniently, so that the solder can be clamped at the welding position before welding, and the solder can be prevented from shaking during the welding process, which can cause loose welding.

[0034] like Figure 3 As shown, in some embodiments, along the axial direction of the stainless steel transfer tube 2, the distance between the positioning portion 6 and the first end face 106 is L, or it can be said that the vertical distance from the positioning portion 6 to the first end face 106 is L, and L satisfies: 0.2mm≤L≤2mm. Since the diameter of the transfer opening 102 and the tube diameter of the stainless steel transfer tube 2 are matched with each other, the stainless steel transfer tube 2 can be inserted into the transfer opening 102, so there is a certain gap between the inner wall surface of the transfer opening 102 and the outer wall surface of the stainless steel transfer tube 2, so that the molten solder can be filled in the gap.

[0035] When L is less than 0.2 mm, the distance between the positioning portion 6 and the first end face 106 is too small, resulting in a small volume of solder that can be clamped between the positioning portion 6 and the first end face 106. During welding, the molten solder may not be able to fill the gap between the outer wall surface of the stainless steel transfer tube 2 and the inner wall surface of the transfer opening 102, resulting in loose welding and possible fluid leakage.

[0036] When L is greater than 2 mm, the distance between the positioning portion 6 and the first end face 106 is too large, which requires that the volume of the solder be designed to be large enough so that the solder can be clamped between the positioning portion 6 and the first end face 106. However, if the volume of the solder is too large, there will be too much molten solder. After filling the gap between the outer wall surface of the stainless steel transfer tube 2 and the inner wall surface of the transfer opening 102, the molten solder will continue to flow into the accommodating cavity 101, forming a turbulent bump in the accommodating cavity 101, which will increase the flow resistance in the accommodating cavity 101.

[0037] Therefore, when the value range of L satisfies 0.2 mm ≤ L ≤ 2 mm, the solder can be firmly clamped between the positioning portion 6 and the first end face 106, and the molten solder can fill the gap between the outer wall surface of the stainless steel adapter pipe 2 and the inner wall surface of the adapter opening 102, and there will be no excess solder flowing into the accommodation cavity 101.

[0038] As Figure 3 and Figure 4 shown, in some embodiments, a weld seam may be provided between the inner wall surface of the adapter opening 102 and the outer wall surface of the stainless steel adapter pipe 2. Along the direction perpendicular to the axis of the adapter opening 102, the width of the weld seam may be γ, where the value range of γ satisfies 0 mm < γ ≤ 0.1 mm. γ being greater than 0 mm allows the molten solder to enter the gap between the inner wall surface of the adapter opening 102 and the outer wall surface of the stainless steel adapter pipe 2, while γ being less than or equal to 0.1 mm can prevent the weld seam from being too wide. If the weld seam is too wide, it may cause too much molten solder to flow into the accommodation cavity 101, resulting in an overly large size of the second solder layer 4 formed on the wall surface defining the accommodation cavity 101, which will interfere with fluid flow and lead to poor welding quality.

[0039] Therefore, when the value range of γ satisfies 0 mm < γ ≤ 0.1 mm, the molten solder can be filled into the gap between the inner wall surface of the adapter opening 102 and the outer wall surface of the stainless steel adapter pipe 2, and at the same time, excessive molten solder flowing into the accommodation cavity 101 can be prevented, thereby improving the welding quality between the stainless steel adapter pipe 2 and the adapter opening 102.

[0040] As Figure 4 shown, in some embodiments, along the axial direction of the adapter opening 102, the thickness of the first solder layer 3 is h, such that the first solder layer 3 has a certain thickness. Thus, the first solder layer 3, the first stainless steel plate 13, and the second stainless steel plate 14 can jointly define the accommodation cavity 101 communicating with the adapter opening 102, and the value range of h satisfies 0.03 mm ≤ h ≤ 0.3 mm.

[0041] Specifically, when h < 0.03 mm, the thickness of the first solder layer 3 is too small, making it difficult to control the amount of solder placed before welding and also unable to well form the accommodation cavity 101.

[0042] When h > 0.3 mm, the thickness of the first solder layer 3 will be too thick. Before welding, a large amount of solder needs to be placed between the first stainless steel plate 13 and the second stainless steel plate 14. After welding, the molten solder can overflow between the first stainless steel plate 13 and the second stainless steel plate 14, and even the formed first solder layer 3 can extend into the accommodation cavity 101, increasing the flow resistance in the accommodation cavity 101 and affecting the fluid flow in the accommodation cavity 101. Therefore, when the value range of h satisfies 0.03 mm ≤ h ≤ 0.3 mm, the welding quality between the first stainless steel plate 13 and the second stainless steel plate 14 can be improved.

[0043] As Figures 2 to 4 shown, in some embodiments, the first stainless steel plate 13 may include a first flat portion 131 and a first convex portion 132 protruding from the first flat portion 131. The first flat portion 131 refers to the portion of the first stainless steel plate 13 that is arranged as a flat plate, and the first convex portion 132 refers to the protruding portion of the flat plate structure. The flanging 12 may protrude from the first convex portion 132.

[0044] Similarly, the second stainless steel plate 14 may include a second flat portion 141 and a second convex portion 142 protruding from the second flat portion 141. The second flat portion 141 refers to the portion of the second stainless steel plate 14 that is arranged as a flat plate, and the second convex portion 142 refers to the protruding portion relative to the flat plate structure of the second stainless steel plate 14.

[0045] When the first stainless steel plate 13 and the second stainless steel plate 14 are covered together, the first flat portion 131 and the second flat portion 141 may be stacked, that is, along the direction perpendicular to the first flat portion 131 and the second flat portion 141, the projection of the first flat portion 131 and the projection of the second flat portion 141 are stacked. The first convex portion 132 and the second convex portion 142 protrude in opposite directions, and the first convex portion 132 and the second convex portion 142 are relatively arranged, so that the first convex portion 132 and the second convex portion 142 can be covered together and jointly form a convex portion 11, and an accommodation cavity 101 is formed inside the convex portion 11. In the flow direction of the fluid in the accommodation cavity 101, the cross-sectional outer contour shape of the accommodation cavity 101 is circular, elliptical, polygonal, etc.

[0046] At the same time, the solder can be arranged between the first flat portion 131 and the second flat portion 141, so that after the solder is heated and melted, the molten solder can form a first solder layer 3 between the first flat portion 131 and the second flat portion 141. The first solder layer 3 can firmly connect the first flat portion 131 and the second flat portion 141 together, making the structure of the pipeline integration module 100 more firm.

[0047] As Figures 2 to 4As shown, in some embodiments, the flanging 12 has a flanging wall surface 104 that defines a transition opening 102, that is, the inner wall surface of the transition opening 102 is the flanging wall surface 104. Along the axis of the transition opening 102, the shape of the transition opening 102 defined by the flanging wall surface 104 is circular, elliptical, polygonal, etc., and the shape of the outer wall surface of the flanging 12 is similar to the shape of its inner wall surface.

[0048] Specifically, the distance from the wall surface defining the accommodation cavity 101 to the axis of the transition opening 102 is d. In the direction of the flanging wall surface 104 facing the wall surface of the accommodation cavity 101, d gradually increases, so that the wall surface of the accommodation cavity 101 is bent away from the axis of the transition opening 102, so that a solder accommodation space 107 can be formed between the wall surface of the accommodation cavity 101 and the outer wall surface of the stainless steel adapter pipe 2. The molten solder can be stacked along the wall surface of the accommodation cavity 101 into the solder accommodation space 107 to form a second solder layer 4, and under the guidance of the wall surface of the accommodation cavity 101, the molten solder will gradually move away from the pipe orifice of the stainless steel adapter pipe 2, preventing the molten solder from accumulating at the pipe orifice of the adapter pipe 2 and reducing the interference of the second solder layer 4 on fluid flow.

[0049] As Figures 2 to 4 shown, in some embodiments, a part of the wall surface defining the accommodation cavity 101 adjacent to the inner wall surface of the transition opening 102 can form a transition convex arc surface 105, and another part of the wall surface away from the transition opening 102 can form a diversion concave arc surface 103, and the transition convex arc surface 105 can be connected between the diversion concave arc surface 103 and the flanging wall surface 104, so that the molten solder will flow from the flanging wall surface 104 to the transition convex arc surface 105 and from the transition convex arc surface 105 to the diversion concave arc surface 103.

[0050] Combined with Figure 3 it can be seen that, in some embodiments, the transition convex arc surface 105 can protrude toward the side where the axis of the transition opening 102 is located, while the diversion concave arc surface 103 is concave toward the side away from the axis of the transition opening 102, and the perpendicular distances from the diversion concave arc surface 103 and the transition convex arc surface 105 to the axis of the transition opening 102 are both d. From the flanging wall surface 104 toward the diversion concave arc surface 103, the perpendicular distance d gradually increases, so that the cross-sectional area of the accommodation cavity 101 defined by the transition convex arc surface 105 and the diversion concave arc surface 103 also shows a gradually increasing trend, and a part of the solder accommodation space 107 can be formed between the transition convex arc surface 105 and the outer wall surface of the stainless steel adapter pipe 2, and this part of the solder accommodation space 107 can communicate with the gap between the outer wall surface of the stainless steel adapter pipe 2 and the flanging wall surface 104, while another part of the solder accommodation space 107 can be formed between the diversion concave arc surface 103 and the outer wall surface of the stainless steel adapter pipe 2.

[0051] When welding the stainless steel adapter tube 2, the molten solder will fill the gap between the outer wall surface of the stainless steel adapter tube 2 and the flanging wall surface 104 and form a part of the second solder layer 4. At the same time, the molten solder will also flow to the transition convex arc surface 105 and away from the pipe orifice of the stainless steel adapter tube 2 along the transition convex arc surface 105, so that the molten solder will stack in the solder accommodation space 107 to form another part of the second solder layer 4. Thereby, it can prevent the molten solder from flowing along the outer wall surface of the stainless steel adapter tube 2 to the inner pipe wall of the stainless steel adapter tube 2 under the capillary effect. And the molten solder can also flow to the diversion concave arc surface 103. The diversion concave arc surface 103 can also guide the molten solder to flow away from the stainless steel adapter tube 2, which can further reduce the accumulation of the molten solder at the pipe orifice of the adapter tube 2, thereby further reducing the interference of the second solder layer 4 on the fluid flow.

[0052] Combined Figure 3 with Figure 4 , more clearly, a first included angle α can be formed between the outer tangent of the diversion concave arc surface 103 and the axis of the transfer opening 102, and α satisfies: 90° < α < 180°. And in the direction from the flanging wall surface 104 towards the diversion concave arc surface 103, the first included angle α gradually becomes larger, so that the diversion concave arc surface 103 is concavely arranged towards the side away from the axis where the transfer opening 102 is located. Thereby, the diversion concave arc surface 103 and the outer wall surface of the stainless steel adapter tube 2 can form the solder accommodation space 107, so that the molten solder can be stacked in the solder accommodation space 107 more smoothly, rather than being randomly dispersed in the accommodation cavity 101.

[0053] More clearly, when a part of α < 90°, a part of the arc surface of the diversion concave arc surface 103 will bend and extend towards the side away from the axis where the transfer opening 102 is located, and the included angle formed between the outer tangent of a part of the diversion concave arc surface 103 and the outer tangent of the flanging wall surface 104 is an acute angle. When the molten solder flows from the flanging wall surface 104 to the diversion concave arc surface 103, the resistance received by the molten solder is greater than the resistance received when flowing along the outer wall surface of the adapter tube 2 to the pipe orifice of the adapter tube 2, so that the molten solder cannot flow smoothly along the flanging wall surface 104 to the diversion concave arc surface 103 and can only flow along the outer wall surface of the adapter tube 2 to the pipe orifice of the adapter tube 2 to accumulate, thereby interfering with the fluid flow.

[0054] When a part of α = 90°, the outer tangent of a part of the diversion concave arc surface 103 is perpendicular to the outer tangent of the flanging wall surface 104. When the molten solder flows from the flanging wall surface 104 to the diversion concave arc surface 103, the resistance received by the molten solder is equivalent to the resistance received when flowing along the outer wall surface of the adapter tube 2 to the pipe orifice of the adapter tube 2, so that the molten solder will still flow along the outer wall surface of the adapter tube 2 to the pipe orifice of the adapter tube 2 to accumulate, thereby also interfering with the fluid flow.

[0055] When 90° < α < 180°, the included angle formed between the outer tangent of the diversion concave arc surface 103 and the outer tangent of the flanging wall surface 104 is an obtuse angle. When the molten solder flows from the flanging wall surface 104 to the diversion concave arc surface 103, the resistance received by the molten solder is less than the resistance received when flowing along the outer wall surface of the adapter pipe 2 to the pipe orifice of the adapter pipe 2. This enables the molten solder to smoothly flow along the flanging wall surface 104 to the diversion concave arc surface 103. At the same time, as the diversion concave arc surface 103 gradually moves away from the axis of the adapter opening 102, the diversion concave arc surface 103 can guide the molten solder to flow away from the adapter pipe 2, which can further reduce the accumulation of the molten solder at the pipe orifice of the adapter pipe 2, thereby further reducing the interference of the solder layer 3 on the fluid flow.

[0056] Therefore, when α satisfies 90° < α < 180°, the adapter pipe 2 and the module body 1 can be firmly connected. At the same time, the interference of the solder layer 3 on the fluid flow is reduced, improving the quality and reliability of the product.

[0057] At the same time, by providing the diversion concave arc surface 103, the molten solder can be guided to flow along the inner wall surface of the accommodating cavity 101, making the inner wall surface of the accommodating cavity 101 smoother and flatter, reducing air turbulence, and decreasing the flow resistance within the accommodating cavity 101.

[0058] Optionally, the included angle formed between the outer tangent of the transition convex arc surface 105 and the axis of the adapter opening 102 is the second included angle β. The second included angle β, like the first included angle α, is an obtuse angle. And because the transition convex arc surface 105 protrudes toward the side where the axis of the adapter opening 102 is located, and the second included angle β gradually becomes smaller in the direction from the flanging wall surface 104 toward the diversion concave arc surface 103, the resistance received by the molten solder during the process of flowing from the flanging wall surface 104 to the transition convex arc surface 105 is very small, and the molten solder can flow smoothly to the transition convex arc surface 105. After that, as the second included angle β gradually becomes smaller, the perpendicular distance d from the transition convex arc surface 105 to the axis of the adapter opening 102 gradually increases. Thus, the cross-sectional area of the solder accommodating space 107 formed between the transition convex arc surface 105 and the outer wall surface of the stainless steel adapter pipe 2 gradually increases. Therefore, as the molten solder continuously flows into the solder accommodating space 107, the solder accommodating space 107 can also have sufficient space to accommodate the solder, preventing the molten solder from quickly filling up the solder accommodating space 107 and reducing the accumulation of the molten solder at the pipe orifice of the stainless steel adapter pipe 2.

[0059] Furthermore, since the convex direction of the guide concave arc surface 103 is opposite to the convex direction of the transition convex arc surface 105, and the angle of the first angle α from the flange wall 104 toward the guide concave arc surface 103 will gradually increase, the resistance encountered by the molten solder in the process of flowing along the guide concave arc surface 103 will become smaller and smaller, so that the molten solder can flow more and more smoothly on the guide concave arc surface 103, so that the outer surface of the formed second solder layer 4 will be very smooth, which can reduce the turbulence in the accommodating cavity 101, thereby reducing the influence of the second solder layer 4 located in the accommodating cavity 101 on the fluid.

[0060] Of course, in the process of gradually increasing the first angle α from the flange wall 104 toward the flow guide concave arc surface 103, it is necessary to satisfy that the first angle α is always less than 180°, and in the process of gradually decreasing the second angle β, the value range of β needs to satisfy: 90°<β<180°. It should be noted that the value range of β needs to satisfy: 90°<β<180°. The same is true for the above-mentioned α satisfying: 90°<α<180°, which will not be repeated here, and the vertical distance from the flow guide concave arc surface 103 to the axis of the adapter opening 102 will also gradually increase, so that the cross-sectional area of ​​the solder accommodating space 107 can gradually increase.

[0061] In some embodiments, the pipeline integration module 100 may also include a refrigerant pipe, one end of which may be connected to the stainless steel transfer tube 2, and the other end of which may be connected to an external device, such as a heat exchanger, thereby forming a refrigerant circulation.

[0062] In some other embodiments, the stainless steel transfer tube 2 can also form a refrigerant pipe, thereby reducing the refrigerant pipe component, and the pipeline integration module 100 does not need to be externally connected to a refrigerant pipe, which can be easily assembled.

[0063] The embodiment of the present application further provides an outdoor unit, which includes the above-mentioned pipeline integrated module 100. The pipeline integrated module 100 of the outdoor unit is connected with the indoor heat exchanger through a pipeline to form a refrigerant circulation.

[0064] The beneficial effects of the outdoor unit in the present application are the same as those of the pipeline integrated module 100 in the present application, and will not be repeated here.

[0065] An embodiment of the present application also provides a HVAC device, including the outdoor unit as described above, and also including an indoor unit that forms a refrigerant circulation and a refrigerant pipe connecting the outdoor unit and the indoor unit.

[0066] The beneficial effects of the HVAC equipment in this application are the same as those of the outdoor unit in this application, and will not be repeated here.

[0067] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application 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. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0068] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pipeline integrated module, characterized in that: For HVAC equipment, including: A first stainless steel plate including a flange, wherein the flange defines a transfer opening; A second stainless steel plate, arranged to cover the first stainless steel plate; a first solder layer connected between the first stainless steel plate and the second stainless steel plate, wherein the first solder layer, the first stainless steel plate and the second stainless steel plate together define a receiving cavity communicated with the transfer opening; A stainless steel adapter tube is inserted into the adapter opening; and The second solder layer fills and seals the gap between the outer wall surface of the stainless steel transfer tube and the wall surface of the flange defining the transfer opening.

2. The pipeline integrated module according to claim 1, characterized in that: The stainless steel transfer tube comprises a pipe body and a positioning portion protruding from the outer surface of the pipe body, and the pipe body is plugged into the transfer opening; The flange has a first end surface facing the positioning portion, a plane where the first end surface is located is arranged at an angle with the axis of the transition opening, and a portion of the second solder layer is located between the positioning portion and the first end surface.

3. The pipeline integrated module according to claim 2, characterized in that: Along the axial direction of the transition opening, the distance between the positioning portion and the first end surface is L, and L satisfies: 0.2 mm≤L≤2 mm.

4. The pipeline integrated module according to claim 1, characterized in that: In a direction perpendicular to the axial direction of the transition opening, a gap γ is provided between an outer wall surface of the stainless steel transition tube and a wall surface of the transition opening, and γ satisfies: 0mm<γ≤0.1mm.

5. The pipeline integrated module according to claim 1, characterized in that: Along the overlapping direction of the first stainless steel plate and the second stainless steel plate, the thickness of the first solder layer is h, and h satisfies: 0.03 mm≤h≤0.3 mm.

6. The pipeline integrated module according to claim 1, characterized in that: The first stainless steel plate comprises a first flat portion and a first convex portion convexly arranged on the first flat portion, and the flange is convexly arranged on the first convex portion; The second stainless steel plate includes a second flat portion and a second convex portion convexly disposed on the second flat portion; The first flat portion and the second flat portion are stacked, the first solder layer is connected between the first flat portion and the second flat portion, the first convex portion and the second convex portion are arranged opposite to each other, and the first solder layer, the first convex portion and the second convex portion jointly define the accommodating cavity.

7. The pipeline integrated module according to claim 1, characterized in that: The distance between the wall of the accommodating cavity and the axis of the transfer opening is defined as d, and d gradually increases in the direction from the wall of the transfer opening toward the wall of the accommodating cavity; The second solder layer extends to be connected to a wall surface of the accommodating cavity.

8. The pipeline integrated module according to claim 7, characterized in that: A portion of the wall surface of the accommodating cavity adjacent to the transition opening is defined as a transition convex arc surface, and another portion of the wall surface away from the transition opening is defined as a flow-guiding concave arc surface; The guide concave arc surface is connected to the transition convex arc surface, and the transition convex arc surface is convexly arranged on the side close to the axis of the transfer opening, and the guide concave arc surface is concavely arranged on the side away from the axis of the transfer opening; The second solder layer is connected to the transition convex arc surface, and extends to be connected to the guide concave arc surface.

9. The pipeline integrated module according to claim 1, characterized in that: The pipeline integrated module also includes a refrigerant pipe; The refrigerant pipe is connected to the stainless steel transfer pipe; or, The stainless steel transfer tube forms the refrigerant tube.

10. An outdoor unit, whose pipeline is connected to the indoor heat exchanger of the indoor unit to form a refrigerant cycle, characterized in that: A pipeline integrated module comprising any one of claims 1-9.

11. A HVAC equipment, characterized in that: It comprises the outdoor unit as claimed in claim 10, and an indoor unit, and a refrigerant pipe connecting the outdoor unit and the indoor unit.

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