Welding assembly and welding equipment for temperature sensing pipe sleeve and U-shaped pipe for air conditioner

Abstract

The utility model belongs to the technical field of manufacturing of air conditioners and air source heat pumps, and discloses a welding assembly and welding equipment for a temperature sensing pipe sleeve and a U-shaped pipe for an air conditioner, the welding assembly comprises the temperature sensing pipe sleeve and the U-shaped pipe, the temperature sensing pipe sleeve is arranged at the top or the outer side of the U-shaped pipe, and a straight line section b is additionally arranged at the top of the U-shaped pipe and is usually guaranteed to be 3-8mm. The welding assembly provided by the utility model can be directly mounted on the two devices of the air conditioner and can be automatically welded at one time along with row welding of the two devices, and manual welding does not need to be added; according to the welding equipment, the temperature sensing pipe sleeve and the U-shaped pipe can be well fixed, the length of a fusion line is guaranteed, the assembly position is guaranteed, and errors are reduced; stable cured parameters are adopted, so that the consistency of products is ensured; automatic welding is adopted, the welding efficiency is greatly improved, the equipment adopts linear passing type welding, and the structural design is simple and practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioner and air source heat pump manufacturing, and particularly relates to a temperature sensing tube sleeve and U tube welding assembly and welding equipment for air conditioner. Background Art

[0002] Currently in the manufacturing process of air conditioners, the temperature sensing tube sleeve is usually welded to the U-tube of the air conditioner evaporator and condenser, and the temperature sensing tube sleeve has a single welding point.

[0003] The welding method is: usually on the automatic welding production line of the two devices (evaporator and condenser) of the air conditioner, after the U-tube is welded by the automatic welding machine, a general worker uses a special tool to lift the temperature-sensing sleeve to the specified U-tube position of the evaporator or condenser, and a welder holds a welding gun to braze it, which involves the cooperation of two people and has low work efficiency. At the same time, due to the problem of coordination between different individuals, when brazing, it will lead to insufficient addition of solder, unstable welding of the sleeve, and inability to guarantee the welding quality. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a temperature sensing tube sleeve and U-tube welding assembly and welding equipment for air conditioners.

[0005] The utility model is implemented in this way, a temperature sensing tube sleeve and U-tube welding assembly for air conditioning, the temperature sensing tube sleeve and U-tube welding assembly for air conditioning comprises a temperature sensing tube sleeve and a U-tube, the temperature sensing tube sleeve is at the top or outside of the U-tube, a straight line segment b is added to the top of the U-tube, which is usually guaranteed to be 3-8mm.

[0006] Furthermore, according to the different installation positions and spaces of the temperature sensing tube sleeves on the two air conditioners, the welding components have different assembly methods of type A, type B, and type C;

[0007] Type A: The temperature sensing tube sleeve is on the top or outside of the U tube, parallel to the axis of the U tube, and can be at any position from 0 to 180°;

[0008] Type B: The temperature sensing tube sleeve is at the top of the U tube, perpendicular to the center line of the U tube, and can be at any position from 0 to 180°;

[0009] Type C: The temperature sensing tube sleeve is outside the U tube and is tangent to the U tube along the outer arc of the U tube. The cutting angle ɑ can be at any position between 0 and 180°.

[0010] Another object of the utility model is to provide a linear welding device for a temperature-sensitive tube sleeve and a U-tube welding assembly for an air conditioner, the linear welding device for a temperature-sensitive tube sleeve and a U-tube welding assembly for an air conditioner comprising a frame; a chain pulley, a drive motor and a conveyor plate chain line are provided on the table top of the frame, the chain pulley is located at both ends of the conveyor plate chain line, and the drive motor is located at the starting point of the conveyor plate chain line; the loading area is located at the upper end of the starting point of the conveyor plate chain line, and a tunnel nitrogen hood is provided in the heating area and the welding area, and the heating area, the welding area and the tunnel nitrogen hood are fixed in the middle position of the table top of the frame; the blanking slide is located at the end of the conveyor plate chain line and is fixed on the left side of the frame table top; a plurality of positioning tooling are fixed on the conveyor plate chain line.

[0011] Furthermore, the positioning tool is fixed to the conveyor plate chain line through two pin holes; and the positioning tool is provided with a blowing hole.

[0012] Further, the conveyor plate chain line passes through the inside of the tunnel nitrogen hood.

[0013] Furthermore, a water injection nozzle is provided in front of the material dropping chute.

[0014] Furthermore, a nitrogen nozzle is provided in front of the tunnel nitrogen hood.

[0015] Another object of the utility model is to provide a rotary welding device for a temperature-sensitive tube sleeve and a U-tube welding assembly for an air conditioner, the rotary welding device for a temperature-sensitive tube sleeve and a U-tube welding assembly for an air conditioner comprising a rotating platform, positioning tooling is fixed around the rotating platform, a driving motor is fixed in the middle below the rotating platform, a heating zone and a welding zone are located at one end of the rotating platform, a loading zone is located at the other end of the rotating platform symmetrical to the heating zone and the welding zone, and a blanking slide is fixed on the side of the rotating platform at the outlet of the welding zone.

[0016] Furthermore, a nitrogen pipe is laid on the rotating platform.

[0017] Furthermore, the positioning tool passes through the interior of the heating zone and the welding zone.

[0018] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the utility model are as follows:

[0019] First, the welding assembly provided by the utility model can be directly installed on the two devices of the air conditioner, and the welding can be completed at one time with the automatic welding of the two devices, without the need for additional manual welding; the welding equipment provided by the utility model can fix the temperature sensing tube sleeve and the U tube very well, ensuring the fusion line length, ensuring the assembly position, and reducing errors; using stable solidified parameters to ensure product consistency; using automated welding, greatly improving welding efficiency, the equipment uses linear through-type welding, and its structural design is simple and practical.

[0020] Second, the design of the temperature sensing tube sleeve and U-tube welding assembly for air conditioners brings a series of advantages and positive effects, which are mainly reflected in improving the efficiency, flexibility and reliability of the air conditioning system. First, by installing the temperature sensing tube sleeve on the top or outside of the U-tube, this design greatly improves the accuracy of temperature monitoring, enabling the air conditioning system to respond more sensitively to changes in ambient temperature, thereby providing more accurate temperature control and ensuring that users have a more comfortable environment experience. Secondly, according to different installation requirements and space limitations, the various assembly methods (types A, B, and C) of the welding assembly increase the adaptability and flexibility of the system. For example, in a space-constrained environment, the most suitable assembly method can be selected to achieve the best installation effect and working performance. Furthermore, this design simplifies the installation and maintenance process because the standardized design of the welding assembly makes the components easier to assemble and replace, thereby reducing maintenance costs and time. In addition, due to its structural optimization, this welding assembly also improves the durability and reliability of the entire system, thereby extending the service life of the air conditioning system. Overall, this solution significantly improves the performance and user experience of the air conditioning system through its innovative design and flexible application, while also reducing the cost of long-term operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the embodiments of the utility model. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a structural diagram of a temperature sensing tube sleeve and a U-tube welding assembly for an air conditioner provided by an embodiment of the present invention.

[0023] Figure 2 1 is a structural diagram of different types of welding assemblies provided by embodiments of the present invention; A, type A; B, type B; C, type C;

[0024] Figure 3 It is a structural diagram of a linear welding device for a temperature sensing tube sleeve and a U-tube welding assembly for an air conditioner provided by an embodiment of the present invention;

[0025] Figure 4 It is a structural diagram of a positioning tool provided in an embodiment of the present invention;

[0026] Figure 5 It is a structural diagram of a rotary welding device for a temperature sensing tube sleeve and a U-tube welding assembly for an air conditioner provided by an embodiment of the present invention;

[0027] In the figure: 1. Temperature sensing tube sleeve; 2. U tube; 301. Frame; 302. Chain pulley; 303. Driving motor; 304. Loading area; 305. Heating area; 306. Welding area; 307. Blanking slide; 308. Positioning tooling; 309. Water injection nozzle; 310. Nitrogen nozzle; 311. Tunnel nitrogen hood; 312. Conveyor plate chain line; 401. Pin hole; 402. Blowing hole; 501. Rotating platform; 502. Nitrogen pipe. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0029] Two specific application examples of the utility model embodiment are:

[0030] Example 1: Home air conditioning system

[0031] In the home air conditioning system, the temperature sensing tube sleeve is installed on the top of the U tube. The temperature sensing tube sleeve is perpendicular to the center line of the U tube, which means that the temperature sensing tube sleeve directly faces the center of the U tube, forming a 90° angle. The welding point is at the top of the U tube to ensure that the temperature sensing tube sleeve is firmly connected to the U tube.

[0032] In a home air conditioning system, this installation method of the temperature sensing tube sleeve can ensure accurate monitoring of the temperature of the refrigerant flowing through the U tube. This vertical installation method makes the temperature sensing tube sleeve very sensitive to the temperature changes of the flowing refrigerant, thereby improving the accuracy and response speed of the air conditioning temperature control.

[0033] Example 2: Industrial Refrigeration System

[0034] In industrial refrigeration systems, the temperature sensing tube sleeve is located outside the U tube. The temperature sensing tube sleeve is tangent to the U tube along the outer arc of the U tube. This configuration makes the temperature sensing tube sleeve partially wrapped around the outside of the U tube. The welding points are distributed along the outer arc of the U tube, so that the temperature sensing tube sleeve and the U tube form a surrounding connection.

[0035] In large industrial refrigeration systems, this wraparound connection can provide a wider temperature monitoring range. This is very important for large refrigeration systems because they need to control the temperature evenly in a larger space. This configuration of the temperature sensing tube sleeve helps to detect the temperature of the entire system more evenly, ensuring the consistency and efficiency of the cooling effect.

[0036] In view of the problems existing in the prior art, the utility model provides a temperature sensing tube sleeve and U-tube welding assembly and welding equipment for air conditioners.

[0037] A temperature sensing tube sleeve and U-tube welding assembly for air conditioning, comprising a temperature sensing tube sleeve 1 and a U-tube 2, wherein the temperature sensing tube sleeve 1 is at the top or outside of the U-tube 2, and a straight line segment b is added to the top of the U-tube 2, which is usually ensured to be 3-8 mm.

[0038] Furthermore, according to the different installation positions and spaces of the temperature sensing tube sleeves on the two air conditioners, the welding components have different assembly methods of type A, type B, and type C;

[0039] Type A: The temperature sensing tube sleeve is on the top or outside of the U tube, parallel to the axis of the U tube, and can be at any position from 0 to 180°;

[0040] Type B: The temperature sensing tube sleeve is at the top of the U tube, perpendicular to the center line of the U tube, and can be at any position from 0 to 180°;

[0041] Type C: The temperature sensing tube sleeve is outside the U tube and is tangent to the U tube along the outer arc of the U tube. The cutting angle ɑ can be at any position between 0 and 180°.

[0042] Another object of the utility model is to provide a linear welding device for a temperature sensing tube sleeve and a U-tube welding assembly for an air conditioner, the linear welding device for a temperature sensing tube sleeve and a U-tube welding assembly for an air conditioner comprising a frame 301; a chain pulley 302, a drive motor 303 and a conveyor plate chain line 312 are provided on the table of the frame 301, the chain pulley 302 is located at both ends of the conveyor plate chain line 312, and the drive motor 303 is located at the starting point of the conveyor plate chain line 312; the loading area 304 is located at the upper end of the starting point of the conveyor plate chain line 312, and a tunnel nitrogen hood 311 is provided in the heating area 305 and the welding area 306, and the heating area 305, the welding area 306 and the tunnel nitrogen hood 311 are fixed in the middle position of the table of the frame 301; the blanking slide 307 is located at the end of the conveyor plate chain line 312 and fixed on the left side of the frame table; a plurality of positioning fixtures 308 are fixed on the conveyor plate chain line 312.

[0043] Furthermore, the positioning tool 308 is fixed to the conveyor plate chain line 312 through two pin holes 401 ; and a blowing hole 402 is provided on the positioning tool 308 .

[0044] Furthermore, the conveyor plate chain line 312 passes through the interior of the tunnel nitrogen hood 311 .

[0045] Furthermore, a water injection nozzle 309 is provided in front of the blanking chute 307 .

[0046] Furthermore, a nitrogen nozzle 310 is provided in front of the tunnel nitrogen hood 311 .

[0047] Another object of the utility model is to provide a rotary welding device for a temperature-sensitive tube sleeve and a U-tube welding assembly for an air conditioner, the rotary welding device for a temperature-sensitive tube sleeve and a U-tube welding assembly for an air conditioner comprising a rotating platform 501, a positioning tool 308 fixed around the rotating platform 501, a driving motor 303 fixed in the middle below the rotating platform, a heating zone 305 and a welding zone 306 located at one end of the rotating platform, a loading zone 304 located at the other end of the rotating platform symmetrical to the heating zone 305 and the welding zone 306, and a blanking chute fixed on the side of the rotating platform at the outlet of the welding zone 306.

[0048] Furthermore, a nitrogen pipe is laid on the 501 rotating platform.

[0049] Furthermore, the positioning tool 308 passes through the heating zone 305 and the welding zone 306 .

[0050] The working principle of the linear welding equipment for the thermosensitive tube sleeve and U-tube welding assembly for air conditioners: In the loading area 304, the operator places the thermosensitive tube sleeve 1 and the U-tube 2 on the positioning fixture 308, and places the fixed-length solder at the junction of the thermosensitive tube sleeve 1 and the U-tube 2; the conveyor plate chain 312 is driven by the drive motor 303, and the product to be welded passes through the heating area 305 together with the fixture for preheating, and then goes to the welding area 306 to completely melt the solder. The U-tube 2 and the thermosensitive tube sleeve 1 complete the welding process in the welding area 306, cool naturally to room temperature or water-cool through the water injection nozzle 309, and are driven by the conveyor plate chain 312 to the blanking slide 307 to form a complete thermosensitive tube sleeve welding assembly product.

[0051] In the welding area 306, the time that the workpiece to be welded is in the welding area can be set by adjusting the speed of the driving motor 303, and the solder is completely melted by adjusting the heating temperature. At the same time, the temperature cannot be too high to cause the copper tubes of the U tube 2 and the temperature sensing tube sleeve 1 to be overburned. This parameter is solidified to form a stable process parameter. In order to prevent oxidation of the welded copper tube, a nitrogen hood is installed in the tunnel 311, and nitrogen is filled in along the moving direction of the conveyor chain through the nitrogen nozzle 310 to ensure the welding quality.

[0052] Working principle of rotary welding equipment for temperature sensing tube sleeve and U-tube welding assembly for air conditioner:

[0053] In the loading area 304, the operator places the temperature sensing tube sleeve 1 and the U tube 2 on the positioning fixture 308, and places the fixed-length solder on the joint of the temperature sensing tube sleeve 1 and the U tube 2; the rotating platform 501 is driven by the driving motor 303, and the product to be welded passes through the heating area 305 together with the fixture for preheating, and the solder is completely melted in the welding area 306. The U tube 2 and the temperature sensing tube sleeve 1 complete the welding process in the welding area 306, cool naturally to room temperature or cool by water through the water injection nozzle, and then go to the blanking slide 307 to form a complete temperature sensing tube sleeve welding assembly product.

[0054] In the welding area 306, the time that the workpiece to be welded is in the welding area can be set by adjusting the speed of the driving motor 303, and the solder can be completely melted by adjusting the heating temperature. At the same time, the temperature cannot be too high to cause the copper tube of the U tube 2 and the temperature sensing tube sleeve 1 to overburn. This parameter is solidified to form a stable process parameter. A nitrogen pipe 502 is laid on the rotating platform 501, and nitrogen passes through the blowing holes reserved on the positioning tooling 308, such as Figure 4 Nitrogen can be optionally filled into the U tube 2 through the blowing hole 402 to prevent oxidation during welding and ensure welding quality.

[0055] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A temperature sensing tube sleeve and U-tube welding assembly for air conditioning, characterized in that: The temperature sensing tube sleeve and U-tube welding assembly for air conditioning comprises a temperature sensing tube sleeve and a U-tube. The temperature sensing tube sleeve is at the top or outside of the U-tube. A straight line segment (b) is added to the top of the U-tube to ensure that it is 3-8 mm.

2. The temperature sensing tube sleeve and U-tube welding assembly for air conditioner according to claim 1, characterized in that: According to the different installation positions and spaces of the temperature sensing tube sleeve on the two devices of the air conditioner, the welding assembly has different assembly methods: type A, type B, and type C; Type A: The temperature sensing tube sleeve is on the top or outside of the U tube, parallel to the axis of the U tube, and the cutting angle ɑ is at any position between 0-180°; Type B: The temperature sensing tube sleeve is at the top of the U tube, perpendicular to the center line of the U tube, and the cutting angle ɑ is at any position between 0-180°; Type C: The temperature sensing tube sleeve is outside the U tube and is tangent to the U tube along the outer arc of the U tube. The cutting angle ɑ is at any position between 0 and 180°.

3. A linear welding device for a temperature sensing tube sleeve and a U-tube welding assembly for an air conditioner as claimed in any one of claims 1 to 2, characterized in that: The linear welding equipment for the temperature sensing tube sleeve and U-tube welding assembly for air conditioners includes a frame; a chain pulley, a drive motor and a conveyor plate chain line are arranged on the table top of the frame, the chain pulley is located at both ends of the conveyor plate chain line, and the drive motor is located at the starting point of the conveyor plate chain line; the loading area is located at the upper end of the starting point of the conveyor plate chain line, and a tunnel nitrogen hood is arranged in the heating area and the welding area, and the heating area, the welding area and the tunnel nitrogen hood are fixed in the middle position of the table top of the frame; the blanking slide is located at the end of the conveyor plate chain line and is fixed on the left side of the frame table top; a plurality of positioning tools are fixed on the conveyor plate chain line.

4. The linear welding equipment for the temperature sensing tube sleeve and U-tube welding assembly for air conditioner according to claim 3, characterized in that: The positioning tool is fixed to the conveyor plate chain line through two pin holes; and a blowing hole is provided on the positioning tool.

5. The linear welding equipment for the temperature sensing tube sleeve and U-tube welding assembly for air conditioner according to claim 3, characterized in that: The conveyor plate chain line passes through the inside of the tunnel nitrogen hood.

6. The linear welding equipment for the temperature sensing tube sleeve and U-tube welding assembly for air conditioner according to claim 3, characterized in that: A water injection nozzle is provided in front of the blanking chute.

7. The linear welding equipment for the temperature sensing tube sleeve and U-tube welding assembly for air conditioner according to claim 3, characterized in that: A nitrogen nozzle is provided in front of the tunnel nitrogen hood.

8. A rotary welding device for a temperature sensing tube sleeve and a U-tube welding assembly for an air conditioner as claimed in any one of claims 1 to 2, characterized in that: The rotary welding equipment for the temperature sensing tube sleeve and U-tube welding assembly for air conditioners includes a rotating platform, positioning tooling is fixed on the four sides of the rotating platform, a driving motor is fixed in the middle below the rotating platform, a heating zone and a welding zone are located at one end of the rotating platform, a loading zone is located at the other end of the rotating platform symmetrical to the heating zone and the welding zone, and a blanking slide is fixed on the side of the rotating platform at the outlet of the welding zone.

9. The rotary welding equipment for the temperature sensing tube sleeve and U-tube welding assembly for air conditioner according to claim 8, characterized in that: A nitrogen gas pipe is laid on the rotating platform.

10. The rotary welding equipment for the temperature sensing tube sleeve and U-tube welding assembly for air conditioner according to claim 8, characterized in that: The positioning tool passes through the heating zone and the welding zone.

Images