A liquid distribution head structure, a welding method of a liquid distribution head, and an air conditioner liquid distribution head

Abstract

The present application relates to air conditioner accessory production technical field, specifically to a kind of liquid distribution head structure, the welding method and air conditioner liquid distribution head of liquid distribution head.The liquid distribution head structure includes liquid distribution head main body, several branch pipe holes are set on the liquid distribution head main body, the liquid distribution head main body is equipped with boss, clamping slot is set on the boss, solder is fixed on the boss by the clamping slot, flow channel is set on the liquid distribution head main body, the both ends of the flow channel are respectively communicated with the clamping slot and the branch pipe hole, this liquid distribution head structure can quickly, efficiently weld liquid distribution branch pipe, with the advantage of high welding quality.

Description

Technical Field

[0001] This invention relates to the field of air conditioner parts manufacturing technology, specifically to a liquid distributor structure, a liquid distributor welding method, and an air conditioner liquid distributor. Background Technology

[0002] Brass distributor heads are piping fittings used in the evaporator of refrigeration units. As a structural component with relatively high cost in the processing and manufacturing of air conditioning pipes, they are key components for achieving liquid distribution. Figures 1-2 As shown, existing brass distributor heads consist of a distributor head, a main distributor pipe, and multiple distributor branch pipes welded together. The welding process between the brass distributor head and the pipeline is crucial. It must ensure sufficient heating space on the distributor head while maintaining a tight fit between the distributor branch pipes to minimize material usage. Therefore, whether the distributor head is hand-welded or high-frequency welded, sufficient clearance must be maintained between the distributor branch pipe holes on the distributor head, while also considering the increased cost of the entire distributor head due to excessive clearance.

[0003] In actual production, both manual welding and high-frequency welding have shortcomings: 1. Manual welding suffers from non-standard piping, such as inconsistent starting positions of the welding wire filler at each weld point, gap misalignment when contacting the capillary tube, and uneven heating during welding. These issues require a high level of welding experience from the welder. 2. High-frequency welding has high requirements for the configuration of the coil tooling and other components needed for welding the distributor head. It also requires manually placing the solder ring onto the distributor branch to be welded, which can result in unevenness or warping of the solder ring. The process design still has flaws, and it is also prone to weld beads. Therefore, currently, regardless of the welding process, it is impossible to simultaneously meet both quality and efficiency requirements for the final result, given the defects in the welded structure. Summary of the Invention

[0004] One of the objectives of this invention is to overcome the shortcomings of the prior art by providing a liquid distribution head structure that can quickly and efficiently weld liquid distribution branch pipes and has the advantage of high welding quality.

[0005] The second objective of this invention is to provide a welding method for a liquid separator.

[0006] To achieve one of the above objectives, the present invention provides the following technical solution:

[0007] A liquid dispensing head structure is provided, including a liquid dispensing head body, a plurality of branch pipe holes for liquid dispensing are provided on the liquid dispensing head body, a boss is provided on the boss, a slot is provided on the boss, solder is fixed to the boss through the slot, and a flow channel is provided on the liquid dispensing head body, the two ends of the flow channel are respectively connected to the slot and the branch pipe holes.

[0008] In some embodiments, the boss is located in the middle of the liquid dispensing head body, the slot is an annular slot that extends along the periphery of the boss, and the solder is a solder ring that fits into the slot to be nested on the boss.

[0009] In some embodiments, a plurality of branch holes are distributed around the boss, and each branch hole is connected to the slot through a corresponding flow channel.

[0010] In some embodiments, the boss is a cylindrical boss, and a plurality of branch holes are evenly distributed at equal intervals along the periphery of the cylindrical boss.

[0011] In some embodiments, a plurality of branch holes are connected in series by guide grooves, the guide grooves connecting the branch holes in a circular path, the circular path surrounding and close to the cylindrical boss.

[0012] In some implementations, the periphery of the opening of each branch pipe hole is recessed to form an expansion port, which gradually expands outward toward the body of the distributor head.

[0013] In some embodiments, the flow channel is inclined, with its inclined rising end connected to the slot and its inclined falling end connected to the expansion port.

[0014] In some embodiments, the cross-section of the guide groove is wedge-shaped.

[0015] The beneficial effects of the liquid dispensing head structure of the present invention are as follows:

[0016] (1) The liquid distribution head structure of the present invention only requires fixing the solder on the boss once. After the solder is heated and melted, it can be distributed to each branch pipe hole in one go through the flow channel and then flow to the branch pipe hole, so that each liquid distribution branch pipe can be welded at the same time. This overcomes the cumbersome operation of fixing the solder ring on each liquid distribution branch pipe in the traditional way, effectively improving the welding efficiency by about 80%. It avoids the problem of uneven position of the solder ring due to multiple placement of the solder ring, which leads to poor welding quality. It also reduces the quality problems of uneven heating, overheating and weld blockage.

[0017] (2) The liquid separator structure of the present invention does not require manual welding, does not require high welding experience from the welder, and improves the convenience of welding.

[0018] (3) The liquid distribution head structure of the present invention is a one-time fixed welding material and welding liquid distribution branch pipe. Therefore, there is no need to leave a lot of empty space during welding, which can make multiple liquid distribution branches as compact as possible, reduce material usage, and thus reduce production costs.

[0019] To achieve the second objective mentioned above, the present invention provides the following technical solution:

[0020] A welding method for a liquid separator head, employing the aforementioned liquid separator head structure, includes the following steps:

[0021] S1. Fix the solder on the boss and insert the liquid distribution branch pipes to be welded into the holes of each branch pipe;

[0022] S2. Place the main body of the liquid separator head with the liquid separator branch pipe inserted into the tooling of the high-frequency welding machine. The high-frequency welding machine heats the solder and the welding position at the same time. The heated and melted solder flows to the expansion port of each branch pipe hole. The solder welds the liquid separator branch pipe to the branch pipe hole. At the same time, the excess solder is evenly filled into the guide groove to complete the welding.

[0023] The beneficial effects of the welding method for the liquid separator of the present invention are as follows:

[0024] The welding method of the liquid separator of the present invention welds each liquid separator branch pipe in one go, which has the advantage of high welding efficiency.

[0025] An air conditioning distributor is also provided, including the distributor structure described above. Attached Figure Description

[0026] Figure 1 This is a top view of the existing liquid separator structure.

[0027] Figure 2 This is a cross-sectional view of the existing liquid separator structure.

[0028] Figure 3 This is a structural diagram of the liquid separator structure in Example 1.

[0029] Figure 4 This is a top view of the liquid separator structure of Example 1.

[0030] Figure 5 This is a side view and a partial enlarged view of the liquid separator structure of Example 1.

[0031] Figure 6 This is a top view of the liquid separator structure of Example 1.

[0032] Figure 7 yes Figure 6 Cross-sectional view of BB.

[0033] Figure Labels

[0034] 1. Main body of the dispensing head; 2. Branch pipe hole; 3. Boss; 4. Slot; 5. Guide groove; 6. Expansion port; 7. Flow channel; 8. Solder ring; 9. Dispensing branch pipe. Detailed Implementation

[0035] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0036] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a” and “the” as used in this invention and the appended claims are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0037] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Example 1

[0039] In actual production of distributor heads, both manual welding and high-frequency welding have shortcomings: 1. Manual welding suffers from non-standard piping, such as inconsistent starting positions of the welding wire filler at each weld point, gap misalignment when contacting the capillary tube, and uneven heating during welding. These issues require a high level of welding experience from the welder. 2. High-frequency welding has high requirements for the configuration of coils and tooling to meet the welding requirements of distributor heads. It also requires manually placing the solder ring onto the distributor branch to be welded, which can result in unevenness and warping of the solder ring. The process design still has flaws, and it is also prone to weld beads. Therefore, currently, regardless of the welding process, it is impossible to simultaneously meet both quality and efficiency requirements for the final result, given the defects in the welded structure.

[0040] The liquid dispensing head structure disclosed in this embodiment, Figures 3-7 As shown, it includes a liquid dispensing head body 1, which has several branch pipe holes 2. The liquid dispensing head body 1 has a boss 3, and a slot 4 is formed on the boss 3. Solder is fixed to the boss 3 through the slot 4. The liquid dispensing head body 1 has a flow channel 7, and the two ends of the flow channel 7 are respectively connected to the slot 4 and the branch pipe holes 2.

[0041] The aforementioned distributor head structure only requires a one-time fixation of the solder on the boss 3. The heated and melted solder is then distributed to each branch pipe hole 2 in one go through the flow channel 7, allowing all distributor branches 9 to be welded simultaneously. This overcomes the cumbersome traditional method of fixing a solder ring 8 on each distributor branch 9, effectively improving welding efficiency by approximately 80%. It avoids the problem of uneven solder ring 8 placement leading to poor welding quality, and also reduces issues such as uneven heating, overheating, and weld blockage. No manual welding is required, reducing the need for skilled welders and improving welding convenience. Because the solder and distributor branch pipes 9 are fixed and welded in a single step, minimal space is needed during welding, allowing for a compact arrangement of multiple distributor branches 9, reducing material usage and production costs. For example, a brass distributor head with a φ4.0×2.4 capillary assembly can have approximately 8 weld points.

[0042] In this embodiment, Figures 3-4 As shown, the boss 3 is located in the middle of the liquid dispensing head body 1, the groove 4 is an annular groove 4, the annular groove 4 extends along the periphery of the boss 3, the solder is a solder ring 8, the solder ring 8 cooperates with the groove 4 to be nested on the boss 3.

[0043] The boss 3 is located in the middle of the liquid distribution head body 1, which facilitates the solder ring 8 to be nested in the boss 3. The molten solder can flow out from the periphery of the boss 3, while the solder is input into the branch pipe hole 2.

[0044] In this embodiment, Figures 3-4 As shown, a plurality of branch holes 2 are distributed around the boss 3, and each branch hole 2 is connected to the slot 4 through a corresponding flow channel 7. The distribution of the branch holes 2 around the boss 3 allows the solder on the boss 3 to flow to each branch hole 2 in a timely manner. At the same time, each branch hole 2 is connected to a flow channel 7, which further increases the speed at which the solder flows to the branch hole 2.

[0045] In this embodiment, Figures 3-4 As shown, the boss 3 is a cylindrical boss 3, and a number of branch pipe holes 2 are evenly distributed along the periphery of the cylindrical boss 3.

[0046] The cylindrical boss 3 allows each branch hole 2 to be evenly surrounded by the boss 3. The distance between each branch hole 2 and the cylindrical boss 3 is equal, and the spacing between each branch hole 2 is equal, which effectively ensures that each branch hole 2 receives solder without discrimination and improves the uniformity of welding.

[0047] In this embodiment, Figures 3-4 As shown, several branch pipe holes 2 are connected in series by guide grooves 5. The guide grooves 5 connect the branch pipe holes 2 in a circular path, and the circular path surrounds and is close to the cylindrical boss 3.

[0048] Since the branch pipe holes 2 are connected by guide grooves 5, excess solder will flow evenly within the guide grooves 5, preventing solder adhesion and accumulation, and avoiding solder beads. The guide grooves 5 connect the branch pipe holes 2 in a circular path, allowing the solder to fill the guide grooves 5 evenly, preventing solder beads. The circular path surrounds and is close to the cylindrical boss 3, which can distribute the solder in a timely manner and avoid solder beads.

[0049] In this embodiment, Figure 6 As shown, the periphery of the opening of each branch pipe hole 2 is sunken to form an expansion port 6, which gradually expands outward toward the body of the liquid separator 1.

[0050] The opening of the branch pipe hole 2 forms an expansion port to facilitate the reception of solder. The expansion port 6 gradually expands outwards towards the body of the distributor head 1, which facilitates the reception of solder on the one hand, and the collection of solder into the branch pipe hole 2 on the other.

[0051] In this embodiment, Figure 5 As shown, the flow channel 7 is inclined, with its inclined rising end connected to the slot 4 and its inclined falling end connected to the expansion port 6.

[0052] The inclined flow channel 7 can quickly distribute solder to the branch hole 2.

[0053] In this embodiment, Figure 7 As shown, the cross-section of the guide groove 5 is wedge-shaped. The wedge-shaped guide groove 5 can effectively prevent solder overflow and avoid the formation of solder beads.

[0054] The dimensions of the main body 1 and the branch pipe hole 2 are both affected by the dimensions of the liquid separator, while the height of the boss 3 depends on the wire diameter of the slot 4. Whether it's an experienced welder or a novice with less skill, the amount of solder used for a single weld point is fixed, eliminating weld beads and inconsistencies in the liquid separator branch pipe 9 at the source, ensuring consistent welding quality, and significantly reducing welding time, thus effectively lowering costs.

[0055] For example, in this embodiment, the inner diameter of the ring formed by the guide groove 5 of the liquid separator structure is 10mm, the wire diameter of the guide groove 5 is 0.6, and the quantity is 1. It depends on the specific brazing pipe diameter specification. The volume of a single brazing ring is approximately the volume of the brazing seam of 8 welding points, ensuring that the entire brazing material corresponds to all welding points.

[0056] For example, the diameter of the dispensing branch pipe 9 is d, and the distance from the center of the branch pipe hole 2 to the center of the entire dispensing head is L.

[0057] The outer diameter of the inner annular boss 3 of the slot 4 is required to be d / 2 from the liquid distribution branch pipe 9.

[0058] The outer diameter D of boss 3 must be: D = 2L - d;

[0059] The groove depth h and groove width s of guide groove 5 are: h = 1~1.5mm, s = 0.5~1mm;

[0060] Figure 5 As shown, the cross-section formed by the slot 4 and the flow channel 7 is triangular, and the angle requirement of this triangle is: A = 120~165°.

[0061] Example 2

[0062] The welding method for the liquid separator disclosed in this embodiment adopts the liquid separator structure of Embodiment 1 and includes the following steps:

[0063] S1. Fix the solder onto the boss 3, and insert the liquid distribution branch pipe 9 to be welded into each branch pipe hole 2;

[0064] S2. Place the liquid distribution head body 1 with the liquid distribution branch pipe 9 inserted into the tooling of the high-frequency welding machine. The high-frequency welding machine heats the solder and the welding position at the same time. The heated and melted solder flows to the expansion port 6 of each branch pipe hole 2. The solder welds the liquid distribution branch pipe 9 to the branch pipe hole 2. At the same time, the excess solder is evenly filled into the guide groove 5 to complete the welding.

[0065] The above-mentioned integral brazing method for the distributor head is expected to achieve better welding results than previous methods. It can also maintain consistent welding quality for welding different brass distributor heads, reducing unstable factors in the process and achieving controllable management.

[0066] Example 3

[0067] The air conditioning distributor disclosed in this embodiment includes the distributor structure of Embodiment 1.

[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0069] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0071] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A liquid dispensing head structure, comprising a liquid dispensing head body, wherein the liquid dispensing head body has a plurality of branch pipe holes for liquid dispensing, characterized in that: The main body of the liquid separator is provided with a boss, and a slot is formed on the boss. Solder is fixed to the boss through the slot. A flow channel is formed on the main body of the liquid separator, and the two ends of the flow channel are respectively connected to the slot and the branch pipe hole. The boss is located in the middle of the liquid dispensing head body, the slot is an annular slot that extends along the periphery of the boss, and the solder is a solder ring that fits into the slot and is nested on the boss. The boss is a cylindrical boss, and several branch pipe holes are evenly distributed at equal intervals along the circumference of the cylindrical boss. Several branch pipe holes are connected in series by guide grooves, which connect the branch pipe holes in a circular path, and the circular path surrounds and is close to the cylindrical boss.

2. The liquid separator structure according to claim 1, characterized in that: Several branch pipe holes are distributed around the boss, and each branch pipe hole is connected to the slot through a corresponding flow channel.

3. The liquid separator structure according to claim 1, characterized in that: The periphery of the opening of each branch pipe hole is sunken to form an expansion port, which gradually expands outward toward the body of the liquid separator.

4. The liquid separator structure according to claim 3, characterized in that: The flow channel is inclined, with its inclined rising end connected to the slot and its inclined falling end connected to the expansion port.

5. The liquid separator structure according to claim 1, characterized in that: The cross-section of the guide groove is wedge-shaped.

6. A welding method for a liquid separator head, characterized in that: The liquid dispensing head structure according to any one of claims 1-5 includes the following steps: S1. Fix the solder on the boss and insert the liquid distribution branch pipes to be welded into the holes of each branch pipe; S2. Place the main body of the liquid separator head with the liquid separator branch pipe inserted into the tooling of the high-frequency welding machine. The high-frequency welding machine heats the solder and the welding position at the same time. The heated and melted solder flows to the expansion port of each branch pipe hole. The solder welds the liquid separator branch pipe to the branch pipe hole. At the same time, the excess solder is evenly filled into the guide groove to complete the welding.

7. An air conditioning distributor, characterized in that: Includes the liquid dispensing head structure as described in any one of claims 1-5.

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