Variable frequency four-pipe heating four-way valve connecting structure

Abstract

The utility model discloses a four -way valve connecting structure of frequency conversion four pipe regulation heat relates four -way valve technical field, including four -way valve valve body, four -way valve valve body outside fixedly connected with fixed pipe, and the other end swing joint of fixed pipe has the connecting pipe, and the fixed pipe outside fixedly covers and is equipped with the first mounting seat, and the connecting pipe outside fixedly covers and is equipped with the second mounting seat, and both sides of first mounting seat all are fixedly connected with fixed block, and the top and bottom of first mounting seat all are installed with fixed assembly, and the top of second mounting seat is installed with limit component, and one side of first mounting seat is equipped with the positioning hole symmetrically, and one side of second mounting seat is fixedly connected with the positioning post symmetrically, and the positioning post is with the positioning hole for the insertion. The utility model uses above -mentioned structure, and direct rotation handle can complete the dismounting operation, saves time and energy, improves assembly efficiency, and for the skill requirement of operating personnel is relatively lower, need not grasps the complicated tool use skill, reduces the operation difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of four-way valve technology, and specifically relates to a connection structure of a variable frequency four-way valve for heating. Background Technology

[0002] The four-way valve in the variable frequency four-pipe heating system is the core component, consisting of a main valve, a pilot valve, and a solenoid coil. The solenoid coil's energization changes the position of the pilot valve core, which in turn controls the main valve slider, switching the refrigerant flow direction and achieving the conversion between cooling and heating modes. During cooling, the refrigerant is guided to the outdoor unit's heat exchanger for heat dissipation and condensation; during heating, it flows into the indoor unit's heat exchanger to release heat. If the four-way valve malfunctions, such as a short circuit or open circuit in the solenoid coil, a stuck slider, or a poor seal, the air conditioner will be unable to switch modes properly, its cooling and heating capacity will decrease, and it may even trigger compressor overheat protection, severely impacting system operation and lifespan.

[0003] Publication No. "CN219102155U" discloses a four-way valve. The four-way valve provided in this application includes a pilot valve and a main control valve. The main control valve has a valve chamber containing a spool valve assembly. The pilot valve connects to both ends of the valve chamber to drive the spool valve assembly to move within the valve chamber. The cross-sectional area of ​​the two ends of the valve chamber connected to the pilot valve is smaller than the cross-sectional area at the center of the valve chamber. The four-way valve provided in this application solves the problems of existing four-way valves requiring large thrust during operation and having slow switching speed, resulting in low switching efficiency.

[0004] While the aforementioned utility model solves the problems of existing four-way valves requiring large thrust during operation and having slow switching speeds, resulting in low switching efficiency, four-way valves are generally connected to the pipe ends using bolts. However, threaded connections require tools such as wrenches to tighten or loosen nuts, making the operation relatively cumbersome. This is especially true in confined installation locations where the limited space for tools increases the difficulty of installation and disassembly. Furthermore, relying on manual tightening of threaded connections makes it difficult to precisely control the tightening force and angle, easily leading to over-tightening or under-tightening. Over-tightening may damage the threads or deform the pipe; under-tightening may affect the sealing and stability of the connection. Utility Model Content

[0005] In response to the problems mentioned in the background art, the purpose of this utility model is to provide a connection structure for a variable frequency four-pipe heat transfer four-way valve, so as to solve the problem that when the valve is generally connected to the end of the pipe, bolts are used for connection. However, threaded connections require the use of tools such as wrenches to tighten or loosen nuts, which is relatively cumbersome. Especially in some installation positions with limited space, the operating space of tools is limited, which increases the difficulty of installation and disassembly.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A four-way valve connection structure for variable frequency four-pipe heating includes a four-way valve body, a fixed pipe fixedly connected to the outside of the four-way valve body, a connecting pipe movably connected to the other end of the fixed pipe, a first mounting seat fixedly sleeved on the outside of the fixed pipe, a second mounting seat fixedly sleeved on the outside of the connecting pipe, fixed blocks fixedly connected to both sides of the first mounting seat, fixed components symmetrically installed on the top and bottom of the first mounting seat, and a limit component installed on the top of the second mounting seat.

[0008] The fixing assembly includes a first synchronous pulley, a second synchronous pulley, a synchronous belt, a threaded post, and a limiting block. The first synchronous pulley is symmetrically rotatably connected to the top and bottom of the first mounting base. The second synchronous pulley is symmetrically rotatably connected to the top of the first mounting base. A synchronous belt is installed between the first and second synchronous pulleys. A threaded post is threaded to one end of the second synchronous pulley, penetrating through the second synchronous pulley. A limiting block is fixedly connected to the top of the threaded post. A transmission assembly is mounted on the top of the first synchronous pulley. The transmission assembly includes a fixed post, a driven gear, a rotating post, a drive gear, and a throttle. A fixed post is fixedly connected to the center of one end of the first synchronous pulley. A driven gear is fixedly sleeved on the outside of the fixed post. A rotating post is rotatably connected to the center of the top and bottom of the first mounting base. The top of the rotating post... A drive gear is fixedly connected, and a throttle is fixedly connected to the top of the drive gear. The drive gear and the driven gear mesh with each other. Fixed blocks are fixedly connected to both sides of the first mounting base, and assembly blocks are fixedly connected to both sides of the second mounting base. An assembly groove is opened on one side of the fixed block, and the assembly block and the assembly groove are plugged in. Threaded holes are opened on the top of the fixed block and the top of the assembly block. The threaded post and the threaded hole are threadedly connected. No additional tools are needed; the disassembly and assembly operations can be completed by simply turning the throttle, saving time and effort and improving assembly efficiency. Especially in emergency repairs or when rapid installation is required, it can significantly shorten the operation time. Moreover, the skill requirements for operators are relatively low, and no complex tool usage skills are required, reducing the difficulty of operation.

[0009] As a preferred technical solution, the limiting component includes a limiting post, a moving block, and a moving groove. The top and bottom of the second mounting base are slidably connected to the limiting post, and the top and bottom of the second mounting base are both provided with moving grooves. The bottom of the limiting post is fixedly connected to the moving block, and the moving block and the moving groove are slidably connected. Limiting holes are symmetrically provided at equal intervals on the outer wall of the rotating post, and the limiting holes and the limiting post are plugged in. This can effectively prevent the rotating post from rotating due to vibration, ensure the stability of the rotating post position, avoid the problem of loosening of the connection that may be caused by the accidental rotation of the rotating post, and prevent loosening or falling off. This ensures the safety and stability of the system and improves the reliability of the entire system in a vibration environment.

[0010] As a preferred technical solution, the first mounting base has symmetrically opened positioning holes on one side, and the second mounting base has symmetrically fixedly connected positioning columns on one side. The positioning columns and positioning holes are plugged in to ensure that the connecting pipe and the fixed pipe are accurately aligned and merged, making the installation of the four-way valve connection structure more precise and avoiding problems such as poor sealing and uneven force due to installation position deviation.

[0011] As a preferred technical solution, a sealing groove is symmetrically opened on one side of the first mounting base, and a sealing block is symmetrically fixedly connected to one side of the second mounting base. The sealing block and the sealing groove are inserted into each other, which can effectively prevent refrigerant and other media from leaking from the connection between the connecting pipe and the fixed pipe, thus ensuring the system's sealing performance and guaranteeing the system's stable and efficient operation.

[0012] In summary, the present invention has the following main advantages:

[0013] First, in this utility model, the connecting pipe and the fixed pipe are combined, and the first mounting base and the second mounting base are combined. The assembly block is inserted into the assembly slot. By turning the handle, the drive gear is controlled to drive the driven gear to rotate, thereby causing the first synchronous pulley to drive the second synchronous pulley to rotate through the synchronous belt. This controls the threaded column to descend, and the threaded column is threadedly connected to the threaded holes on the fixed block and the assembly block. There is no need to find or use additional tools. The disassembly and assembly operations can be completed by directly turning the handle, which saves time and effort and improves assembly efficiency. Especially in the case of emergency repair or rapid installation, it can significantly shorten the operation time. Moreover, the skill requirements for operators are relatively low. There is no need to master complicated tool use skills, which reduces the difficulty of operation.

[0014] Secondly, in this utility model, the connecting pipe and the fixed pipe are combined, and the first mounting base and the second mounting base are combined. After the connecting pipe and the fixed pipe are fixed by the cooperation of the transmission component and the fixing component, the limiting post is pushed, so that the limiting post drives the moving block to slide inside the moving groove. The limiting post moves forward and inserts into the limiting hole opened on the outer wall of the rotating post, limiting the rotating post. This can effectively prevent the rotating post from rotating due to vibration, ensuring the stability of the rotating post position, avoiding the problem of loosening of the connection that may be caused by the accidental rotation of the rotating post, and making it less likely to loosen or fall off. This ensures the safety and stability of the system and improves the reliability of the entire system in a vibration environment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is the utility model Figure 1 Enlarged view of part A;

[0017] Figure 3 This is the utility model Figure 1 Enlarged view of part B;

[0018] Figure 4 This is a three-dimensional structural diagram of the first mounting base and the second mounting base of this utility model.

[0019] Reference numerals in the attached drawings: 1. Four-way valve body; 2. Fixed pipe; 3. Connecting pipe; 4. First mounting base; 5. Second mounting base; 6. Positioning hole; 7. Positioning pin; 8. Sealing block; 9. Sealing groove; 10. Fixed block; 11. Assembly block; 12. Assembly groove; 13. Fixed assembly; 131. First synchronous pulley; 132. Second synchronous pulley; 133. Synchronous belt; 134. Threaded pin; 135. Limiting block; 14. Threaded hole; 15. Transmission assembly; 151. Fixed pin; 152. Driven gear; 153. Rotating pin; 154. Drive gear; 155. Throttle; 16. Limiting assembly; 161. Limiting pin; 162. Moving block; 163. Moving groove; 17. Limiting hole. Detailed Implementation

[0020] Example

[0021] refer to Figures 1 to 4 The four-way valve connection structure for variable frequency four-pipe heating described in this embodiment includes a four-way valve body 1, a fixed pipe 2 fixedly connected to the outside of the four-way valve body 1, a connecting pipe 3 movably connected to the other end of the fixed pipe 2, a first mounting seat 4 fixedly sleeved on the outside of the fixed pipe 2, a second mounting seat 5 fixedly sleeved on the outside of the connecting pipe 3, a fixing block 10 fixedly connected to both sides of the first mounting seat 4, a fixing component 13 symmetrically installed on the top and bottom of the first mounting seat 4, and a limit component 16 installed on the top of the second mounting seat 5;

[0022] The fixing assembly 13 includes a first synchronous pulley 131, a second synchronous pulley 132, a synchronous belt 133, a threaded post 134, and a limiting block 135. The first synchronous pulley 131 is symmetrically rotatably connected to the top and bottom of the first mounting base 4. The second synchronous pulley 132 is symmetrically rotatably connected to the top of the first mounting base 4. The synchronous belt 133 is installed between the first synchronous pulley 131 and the second synchronous pulley 132. One end of the second synchronous pulley 132 is threadedly connected to the threaded post 134, which passes through the second synchronous pulley. 132, a limit block 135 is fixedly connected to the top of the threaded column 134, and a transmission assembly 15 is installed on the top of the first synchronous pulley 131. The transmission assembly 15 includes a fixed column 151, a driven gear 152, a rotating column 153, a drive gear 154, and a throttle 155. The fixed column 151 is fixedly connected to the center of one end of the first synchronous pulley 131, and the driven gear 152 is fixedly sleeved on the outside of the fixed column 151. The rotating column 153 is rotatably connected to the center of both the top and bottom of the first mounting base 4. A drive gear 154 is fixedly connected to the top of the moving column 153, and a throttle 155 is fixedly connected to the top of the drive gear 154. The drive gear 154 meshes with the driven gear 152. Fixing blocks 10 are fixedly connected to both sides of the first mounting base 4, and assembly blocks 11 are fixedly connected to both sides of the second mounting base 5. An assembly groove 12 is opened on one side of the fixing block 10, and the assembly block 11 is inserted into the assembly groove 12. Threaded holes 14 are opened on the top of the fixing block 10 and the top of the assembly block 11. The threaded column 134 is threadedly connected to the threaded hole 14. The connecting pipe 3 and the fixing pipe 2 are merged, and the first mounting base 4 and the second mounting base 5 are merged. The assembly block 11 is inserted into the assembly groove 12. The throttle 155 is rotated to control the drive gear 154 to drive the driven gear 152 to rotate, thereby causing the first synchronous pulley 131 to drive the second synchronous pulley 132 to rotate through the synchronous belt 133. The threaded column 134 is controlled to descend and is threadedly connected to the threaded hole 14 on the fixing block 10 and the assembly block 11.

[0023] refer to Figure 3 The limiting component 16 includes a limiting post 161, a moving block 162, and a moving groove 163. The second mounting base 5 has the limiting post 161 slidably connected to its top and bottom, and the second mounting base 5 has the moving groove 163 opened at its top and bottom. The moving block 162 is fixedly connected to the bottom of the limiting post 161. The moving block 162 and the moving groove 163 are slidably connected. The outer wall of the rotating post 153 has symmetrically spaced limiting holes 17. The limiting holes 17 and the limiting post 161 are inserted into each other. The connecting pipe 3 and the fixed pipe 2 are merged. At the same time, the first mounting base 4 and the second mounting base 5 are merged. After the connecting pipe 3 and the fixed pipe 2 are fixed by the cooperation of the transmission component 15 and the fixing component 13, the limiting post 161 is pushed, so that the limiting post 161 drives the moving block 162 to slide inside the moving groove 163. The limiting post 161 moves forward and inserts into the limiting hole 17 opened on the outer wall of the rotating post 153, thus limiting the rotating post 153.

[0024] refer to Figure 4 The first mounting base 4 has symmetrically opened positioning holes 6 on one side, and the second mounting base 5 has symmetrically fixedly connected positioning pins 7 on one side. The positioning pins 7 and positioning holes 6 are inserted into each other, merging the connecting pipe 3 and the fixing pipe 2. At the same time, the first mounting base 4 and the second mounting base 5 are merged, and the second mounting base 5 drives the positioning pins 7 to be inserted into the positioning holes 6.

[0025] refer to Figure 4 The first mounting base 4 has a symmetrically opened sealing groove 9 on one side, and the second mounting base 5 has a symmetrically fixedly connected sealing block 8 on one side. The sealing block 8 and the sealing groove 9 are inserted into each other. The connecting pipe 3 and the fixed pipe 2 are merged together. At the same time, the first mounting base 4 and the second mounting base 5 are merged together, and the second mounting base 5 drives the sealing block 8 to be inserted into the sealing groove 9.

[0026] Operating principle and advantages: First, the connecting pipe 3 and the fixed pipe 2 are combined, and the first mounting seat 4 and the second mounting seat 5 are combined. The second mounting seat 5 drives the positioning column 7 and the sealing block 8 to be inserted into the positioning hole 6 and the sealing groove 9. The assembly block 11 is inserted into the assembly groove 12. The throttle 155 is turned to control the drive gear 154 to drive the driven gear 152 to rotate, so that the first synchronous pulley 131 drives the second synchronous pulley 132 to rotate through the synchronous belt 133. The threaded column 134 is controlled to descend. The threaded column 134 is threadedly connected to the threaded hole 14 on the fixed block 10 and the assembly block 11. Finally, the limiting column 161 is pushed, so that the limiting column 161 drives the moving block 162 to slide in the moving groove 163. The limiting column 161 moves forward and is inserted into the limiting hole 17 opened on the outer wall of the rotating column 153 to limit the rotating column 153.

[0027] This invention eliminates the need to find and use additional tools; disassembly and assembly can be completed simply by turning the 155 throttle, saving time and effort, improving assembly efficiency, significantly shortening operation time, and requiring relatively low skill from operators, as no complex tool usage techniques are required, thus reducing operational difficulty.

Claims

1. A four-way valve connection structure for variable frequency four-pipe heating, comprising a four-way valve body (1), characterized in that: The four-way valve body (1) is fixedly connected to a fixed pipe (2) on the outside. The other end of the fixed pipe (2) is movably connected to a connecting pipe (3). A first mounting seat (4) is fixedly sleeved on the outside of the fixed pipe (2). A second mounting seat (5) is fixedly sleeved on the outside of the connecting pipe (3). Fixed blocks (10) are fixedly connected to both sides of the first mounting seat (4). Fixed components (13) are symmetrically installed on the top and bottom of the first mounting seat (4). A limit component (16) is installed on the top of the second mounting seat (5). The fixing component (13) includes a first synchronous pulley (131), a second synchronous pulley (132), a synchronous belt (133), a threaded post (134), and a limiting block (135). The first mounting base (4) is symmetrically rotatably connected to the top and bottom of the first synchronous pulley (131). The first mounting base (4) is symmetrically rotatably connected to the top of the second synchronous pulley (132). A synchronous belt (133) is installed between the first synchronous pulley (131) and the second synchronous pulley (132). One end of the second synchronous pulley (132) is threadedly connected to a threaded post (134). The threaded post (134) passes through the second synchronous pulley (132). The top of the threaded post (134) is fixedly connected to a limiting block (135). A transmission component (15) is installed on the top of the first synchronous pulley (131).

2. The four-way valve connection structure for variable frequency four-pipe heating according to claim 1, characterized in that: The transmission assembly (15) includes a fixed column (151), a driven gear (152), a rotating column (153), a drive gear (154), and a throttle (155). The fixed column (151) is fixedly connected to the center of one end of the first synchronous pulley (131). The driven gear (152) is fixedly sleeved on the outside of the fixed column (151). The rotating column (153) is rotatably connected to the center of the top and bottom of the first mounting base (4). The drive gear (154) is fixedly connected to the top of the rotating column (153). The throttle (155) is fixedly connected to the top of the drive gear (154). The drive gear (154) and the driven gear (152) mesh with each other.

3. The four-way valve connection structure for variable frequency four-pipe heating according to claim 2, characterized in that: The first mounting base (4) is fixedly connected to both sides of the fixing block (10), and the second mounting base (5) is fixedly connected to both sides of the assembly block (11). The fixing block (10) has an assembly groove (12) on one side. The assembly block (11) and the assembly groove (12) are inserted into each other. The top of the fixing block (10) and the top of the assembly block (11) are both provided with threaded holes (14). The threaded post (134) and the threaded hole (14) are threadedly connected.

4. The four-way valve connection structure for variable frequency four-pipe heating according to claim 3, characterized in that: The limiting component (16) includes a limiting post (161), a moving block (162), and a moving groove (163). The second mounting base (5) is slidably connected to the limiting post (161) at both the top and bottom. The second mounting base (5) is provided with a moving groove (163) at both the top and bottom. The moving block (162) is fixedly connected to the bottom of the limiting post (161). The moving block (162) and the moving groove (163) are slidably connected.

5. The four-way valve connection structure for variable frequency four-pipe heating according to claim 4, characterized in that: The outer wall of the rotating column (153) is symmetrically provided with limiting holes (17) at equal intervals, and the limiting holes (17) and the limiting column (161) are inserted into each other.

6. The four-way valve connection structure for variable frequency four-pipe heating according to claim 1, characterized in that: The first mounting base (4) has symmetrically provided positioning holes (6) on one side, and the second mounting base (5) has symmetrically fixedly connected positioning posts (7) on one side. The positioning posts (7) and positioning holes (6) are inserted into each other.

7. The four-way valve connection structure for variable frequency four-pipe heating according to claim 1, characterized in that: The first mounting base (4) has symmetrically opened sealing grooves (9) on one side, and the second mounting base (5) has symmetrically fixedly connected sealing blocks (8) on one side. The sealing blocks (8) and the sealing grooves (9) are inserted into each other.

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