Connecting structure for water inlet pipe and water outlet pipe of refrigerating machine

Abstract

The utility model relates to the technical field of bathtub accessories, in particular to a connecting structure for a water inlet pipe and a water outlet pipe of a refrigerating machine, which comprises a connecting pipe serving as a base frame for connection, a telescopic sleeve capable of freely expanding or contracting according to the change of water temperature and environment temperature, and a locking device for fixing the position of the telescopic sleeve, the two ends of the connecting pipe are in butt joint with the refrigerator and the water pipe correspondingly, a boss is arranged on the outer side, close to the middle, of the connecting pipe, and a plurality of penetrating holes are formed in the periphery of the boss. The telescopic sleeves are arranged on the outer side faces, located on the two sides of the boss, of the connecting pipe correspondingly, and one end of each telescopic sleeve is provided with a locking device and fixedly connected with the boss. The locking device is fixedly connected with the connecting pipe in a threaded or buckled mode. According to the utility model, the telescopic sleeve is arranged on the connecting pipe, and the telescopic sleeve and the connecting pipe are fixed through the locking device, so that the problems of loose connection and water leakage caused by temperature difference in the prior art are solved, and normal operation of a refrigerating or heating system is ensured.

Description

Technical Field

[0001] This utility model relates to the field of bathtub accessories technology, and in particular to a connection structure for the inlet and outlet water pipes of a refrigeration unit. Background Technology

[0002] As living standards improve, people are paying more and more attention to the quality and practicality of household goods. Many families with larger living spaces will install bathtubs during renovations. With the diversification of usage needs, existing bathtubs have evolved into bathtubs that can be used for both hot and cold water baths.

[0003] Chinese utility model patent CN219538137U discloses an integrated cooling and heating bathtub system. This system uses a single-loop water pipe module for water return and outlet within the bathtub. A cooling module and a heating module are connected in series along the flow path of this water pipe module. An electrical control panel switches between the cooling and heating modules to operate independently, cooling or heating the water flowing through the water pipe module respectively. By integrating the cooling and heating functions and supplying water through the same piping system, the overall structure is more compact, simplifying the control and piping structures. The installation space layout is reasonable, making it particularly suitable for installation in small bathtubs. This solves the technical problems of existing technologies, such as separate cooling and heating systems, complex overall structures, and large space requirements.

[0004] However, in existing technologies, the connection between the bathtub cooling or heating module and the water pipe module is often affected by temperature changes, especially during frequent switching on and off or seasonal changes. Gaps can easily form due to thermal expansion and contraction, affecting the seal and potentially causing the water pipes to detach. This not only increases maintenance costs but may also lead to water waste. Furthermore, most connectors currently on the market rely on static designs and lack adaptability to temperature changes, making them unsuitable for long-term use. Utility Model Content

[0005] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide a connection structure for the inlet and outlet water pipes of a refrigeration unit, so as to solve the problems of loose connection and water leakage caused by temperature difference in the prior art, and ensure the normal operation of the refrigeration or heating system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A connection structure for the inlet and outlet water pipes of a refrigeration unit, comprising:

[0008] Connecting pipe: As the basic framework for connection, the two ends of the connecting pipe are respectively connected to the chiller and the water pipe, and a boss is provided on the outer side of the connecting pipe near the middle position, and multiple through holes are opened on the circumference of the boss.

[0009] Telescopic sleeve: used to freely expand or contract according to changes in water temperature and ambient temperature. The telescopic sleeve is respectively set on the outer side of the connecting pipe on both sides of the boss, and a locking device is provided at one end of the telescopic sleeve to fix it to the boss.

[0010] Locking device: used to fix the position of the telescopic sleeve. The locking device is fixedly connected to the connecting pipe by means of threads or buckles. When temperature changes cause expansion and contraction, the telescopic sleeve automatically adjusts the length of the extension to ensure that the connecting pipe is in close contact with the water pipe.

[0011] Preferably, the locking device includes a locking disc and an adjusting bolt. The locking disc has multiple connecting holes at the positions corresponding to the through holes on its circumference, and the locking disc is fixedly connected to one end of the telescopic sleeve. The locking disc and the boss are fixedly connected by the adjusting bolt. The adjusting bolt passes through the through holes and the connecting holes, and a fastening screw is threaded onto the adjusting bolt.

[0012] Preferably, an anti-detachment ring is provided on the opening at the other end of the telescopic sleeve away from the boss. The anti-detachment ring has a U-shaped ring structure and is fixedly connected to the telescopic sleeve. The diameter of the anti-detachment ring is smaller than the diameter of the locking disc.

[0013] Preferably, the telescopic sleeve includes a flexible connecting part and a circular part, the flexible connecting part and the circular part are equidistant from each other, and an elastic sealing ring is sleeved between one of the circular parts and the anti-detachment ring.

[0014] Preferably, the telescopic sleeve and the connecting pipe are fitted with a clearance.

[0015] Preferably, the outer surface of the connecting pipe near the openings at both ends is provided with a threaded structure, and an anti-detachment hook is provided on one side of the threaded structure.

[0016] Preferably, the anti-detachment hook is an elastic snap-fit ​​structure, and one side of the anti-detachment hook is inclined toward the opening of the connecting pipe.

[0017] Preferably, the inner wall of the connecting pipe is coated with a high-temperature resistant heat-insulating coating.

[0018] In summary, the beneficial effects of this utility model are as follows:

[0019] This invention connects the chiller and the water pipe module via a connecting pipe, and uses a telescopic sleeve on the outer side of the connecting pipe and a locking device to fix the telescopic sleeve to the connecting pipe. This allows the connecting pipe to be connected to the inlet and outlet water pipes of the chiller externally or internally. It also achieves automatic compensation for spatial changes caused by temperature changes, effectively solving the sealing and stability problems caused by thermal expansion and contraction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure of the inlet and outlet water pipes of the present invention for a refrigeration unit;

[0021] Figure 2 This is an exploded view of the connection structure of the inlet and outlet water pipes of the present invention for a refrigeration unit;

[0022] Figure 3 This is a top view of the connection structure for the inlet and outlet water pipes of a refrigeration unit according to this utility model;

[0023] Figure 4 yes Figure 3 A cross-sectional view of the AA plane;

[0024] Figure 5 This is a schematic diagram of the connecting pipe in this utility model;

[0025] Figure 6 This is a schematic diagram of the telescopic sleeve in this utility model.

[0026] Explanation of the reference numerals in the figure:

[0027] 1. Connecting pipe; 11. Boss; 12. Through hole; 13. Threaded structure; 2. Telescopic sleeve; 21. Flexible connection part; 22. Circular part; 3. Locking device; 31. Locking disc; 311. Connecting hole; 32. Adjusting bolt; 321. Fastening screw; 4. Anti-detachment ring; 5. Elastic sealing ring; 6. Anti-detachment hook. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0029] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, the above terms should not be construed as limitations on this utility model.

[0030] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0031] The following is in conjunction with the appendix Figure 1-6 The present invention will provide a more detailed description of an embodiment of a connection structure for the inlet and outlet water pipes of a refrigeration unit.

[0032] A connection structure for the inlet and outlet water pipes of a refrigeration unit, such as Figure 1 , 2 As shown, the system includes a connecting pipe 1 serving as the basic framework for connection, a telescopic sleeve 2 for freely expanding or contracting according to changes in water temperature and ambient temperature, and a locking device 3 for fixing the position of the telescopic sleeve 2. The two ends of the connecting pipe 1 are respectively connected to the chiller and the water pipe, and a boss 11 is provided on the outer side of the connecting pipe 1 near the middle position, with multiple through holes 12 circumferentially formed on the boss 11. The telescopic sleeve 2 is respectively located on the outer surfaces of the connecting pipe 1 on both sides of the boss 11, and one end of the telescopic sleeve 2 is fixedly connected to the boss 11 by the locking device 3. The locking device 3 is fixedly connected to the connecting pipe 1 by means of threads or snaps. When temperature changes cause expansion and contraction, the telescopic sleeve 2 automatically adjusts its extended length to ensure that the connecting pipe 1 is in close contact with the water pipe.

[0033] Specifically, when connecting pipe 1 is connected to the inlet and outlet water pipes, one end of connecting pipe 1 is first connected to the inlet and outlet water pipes of the cooling module or heating module, and the other end is connected to the water pipe module. The initial position is set by locking device 3 to ensure that the telescopic sleeve 2 is in a moderate state. When the working environment temperature changes, the telescopic sleeve 2 automatically adjusts to maintain close contact between connecting pipe 1 and the inlet and outlet water pipes and the water pipe module. At the same time, locking device 3 fixes the telescopic sleeve 2 by means of threads or buckles, which is convenient for disassembly and ensures a stable connection. Moreover, the telescopic sleeve 2 is made of corrosion-resistant and anti-aging materials and can be freely stretched and compressed according to temperature differences, thereby realizing automatic compensation for space changes caused by temperature changes and effectively solving the sealing and stability problems caused by thermal expansion and contraction.

[0034] In this embodiment, as Figure 2As shown, the locking device 3 includes a locking disc 31 and an adjusting bolt 32. The locking disc 31 has multiple connecting holes 311 at the positions corresponding to the through hole 12 on its circumference. The locking disc 31 is fixedly connected to one end of the telescopic sleeve 2. The locking disc 31 and the boss 11 are fixedly connected by the adjusting bolt 32. The adjusting bolt 32 passes through the through hole 12 and the connecting holes 311, and a fastening screw 321 is threaded onto the adjusting bolt 32.

[0035] Specifically, in order to adjust the installation position of the telescopic sleeve 2, a locking disc 31 is provided at one end of the telescopic sleeve 2. The locking disc 31 is adapted to the boss 11, and a connecting hole 311 is opened on the locking disc 31 at the position corresponding to the through hole 12, so that the adjusting bolt 32 can be connected in series with the locking disc 31 and the boss 11, and fixed on the adjusting bolt 32 with the fastening screw 321, thereby fixing the telescopic sleeve 2. When it is necessary to adjust the position between the telescopic sleeve 2 and the boss 11, the fastening screw 321 is loosened, the distance between the telescopic sleeve 2 and the boss 11 is adjusted, and then the fastening screw 321 is tightened again.

[0036] In this embodiment, as Figure 6 As shown, an anti-detachment ring 4 is provided on the opening at the other end of the telescopic sleeve 2 away from the boss 11. The anti-detachment ring 4 has a U-shaped ring structure and is fixedly connected to the telescopic sleeve 2. The diameter of the anti-detachment ring 4 is smaller than the diameter of the locking disc 31.

[0037] Specifically, the purpose of setting the anti-detachment ring 4 is to fix the telescopic sleeve 2 to the inlet and outlet water pipes when the telescopic sleeve 2 is connected to them, thereby fixing the telescopic sleeve 2. The diameter of the telescopic sleeve 2 is slightly larger than the diameter of the connecting pipe 1 and smaller than the diameter of the locking disc 31. This is so that when the connecting pipe 1 is connected to the inlet and outlet water pipes, the anti-detachment ring 4 can be inserted into the inlet and outlet water pipes together with the connecting pipe and complete the snap-fit ​​fixation, thereby facilitating the quick installation of the connecting pipe 1.

[0038] In this embodiment, as Figure 6 As shown, the telescopic sleeve 2 includes a flexible connecting part 21 and a circular part 22. The flexible connecting part 21 and the circular part 22 are arranged at equal intervals. An elastic sealing ring 5 is sleeved between one of the circular parts 22 and the anti-detachment ring 4.

[0039] Specifically, when the telescopic sleeve 2 is fixed to the connecting pipe 1, its flexible connecting part 21 is in a folded state. When the temperature changes, the flexible connecting part 21 automatically expands or contracts, allowing the telescopic sleeve 2 to maintain a stable connection with the inlet and outlet water pipes, thereby solving the sealing and stability problems caused by thermal expansion and contraction. The annular part 22 connected between the flexible connecting parts 21 is designed to prevent excessive elastic deformation of the flexible connecting parts 21, which would prevent them from returning to their original shape. In addition, the elastic sealing ring 5 fitted between the annular part 22 and the anti-detachment ring 4 has good elasticity and recovery force, and can maintain its original shape after multiple expansions and contractions, ensuring a long-term sealing effect and preventing water leakage.

[0040] In this embodiment, the telescopic sleeve 2 and the connecting pipe 1 are fitted with a clearance fit. The advantage of the clearance fit is that there is space for deformation between the telescopic sleeve 2 and the connecting pipe 1, which makes it convenient to connect the telescopic sleeve 2 to the inlet and outlet water pipes. The installation is convenient and simple, and it is highly practical.

[0041] In this embodiment, as Figure 5 As shown, a threaded structure 13 is provided on the outer surface of the connecting pipe 1 near the openings at both ends, and an anti-detachment hook 6 is provided on one side of the threaded structure 13. The anti-detachment hook 6 is an elastic snap-fit ​​structure, and one side of the anti-detachment hook 6 is inclined towards the opening of the connecting pipe 1.

[0042] Specifically, the threaded structure on the openings at both ends of the connecting pipe 1 increases the friction between it and the inlet and outlet water pipes of the refrigeration unit, and also facilitates the fixed connection between the connecting pipe 1 and the inlet and outlet water pipes. The anti-detachment hook 6 is designed to secure the connecting pipe 1 to the inlet and outlet water pipes and prevent the connecting pipe 1 from loosening and falling out of the inlet and outlet water pipes. One side of the anti-detachment hook 6 is set as an inclined surface, which allows the connecting pipe 1 to be smoothly inserted into the inlet and outlet water pipes, and the hook structure prevents the connecting pipe 1 from falling out, thereby increasing the stability of the connection.

[0043] To further enhance the high-temperature resistance of connecting pipe 1, a high-temperature resistant heat-insulating coating is applied to the inner wall of connecting pipe 1. The high-temperature resistant coating uses organic high-temperature resistant coatings, such as fluoropolymer coatings, heterocyclic polymer coatings, and organosilicon high-temperature resistant coatings. By applying the high-temperature resistant coating, the high-temperature water flow when connecting pipe 1 is connected to the inlet and outlet water pipes of the refrigeration unit can be improved, avoiding the problem of loosening at the connection due to thermal expansion and contraction, thereby improving the stability of connecting pipe 1.

[0044] The working principle of this utility model:

[0045] When connecting pipe 1 to the inlet and outlet water pipes of the refrigeration unit, pipe 1 can be connected externally or internally depending on the size of the inlet and outlet water pipes. When connecting pipe 1 is connected to the inlet and outlet water pipes (i.e., pipe 1 is inserted into the inlet and outlet water pipes), the inlet and outlet water pipes are located outside the telescopic sleeve 2. Pipe 1 and telescopic sleeve 2 extend into the inlet and outlet water pipes together. At this time, pipe 1 is threadedly connected to the inlet and outlet water pipes through a threaded structure. Even if there is no internal thread on the inside of the inlet and outlet water pipes, pipe 1 can still be fixed inside the inlet and outlet water pipes by anti-detachment hooks 6. The telescopic sleeve 2 automatically expands or contracts when the temperature changes, filling the inner wall of the inlet and outlet water pipes to prevent pipe 1 from loosening, thereby improving the stability and sealing of the connection. When the connecting pipe 1 is connected to the outside of the inlet and outlet water pipes (i.e., the connecting pipe 1 is sleeved on the outside of the inlet and outlet water pipes), the inlet and outlet water pipes are located in the gap between the connecting pipe 1 and the telescopic sleeve 2. The telescopic sleeve 2 forms a sealed space with the inlet and outlet water pipes through the anti-detachment ring 4, and the gap is sealed by the elastic sealing ring 5, so that the connecting pipe 1 and the inlet and outlet water pipes are stably connected. Under the condition of thermal expansion and contraction, the extension position of the telescopic sleeve 2 is automatically adjusted, thereby realizing automatic compensation for the spatial changes caused by temperature changes.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connection structure for the inlet and outlet water pipes of a refrigeration unit, characterized in that, include Connecting pipe: As the basic framework for connection, the two ends of the connecting pipe are respectively connected to the chiller and the water pipe, and a boss is provided on the outer side of the connecting pipe near the middle position, and multiple through holes are opened on the circumference of the boss. Telescopic sleeve: used to freely expand or contract according to changes in water temperature and ambient temperature. The telescopic sleeve is respectively set on the outer side of the connecting pipe on both sides of the boss, and a locking device is provided at one end of the telescopic sleeve to fix it to the boss. Locking device: used to fix the position of the telescopic sleeve. The locking device is fixedly connected to the connecting pipe by means of threads or buckles. When temperature changes cause expansion and contraction, the telescopic sleeve automatically adjusts the length of the extension to ensure that the connecting pipe is in close contact with the water pipe.

2. The connection structure for the inlet and outlet water pipes of a refrigeration unit according to claim 1, characterized in that, The locking device includes a locking disc and an adjusting bolt. The locking disc has multiple connecting holes at the positions corresponding to the through holes on its circumference, and the locking disc is fixedly connected to one end of the telescopic sleeve. The locking disc and the boss are fixedly connected by the adjusting bolt. The adjusting bolt passes through the through holes and the connecting holes, and a fastening screw is threaded onto the adjusting bolt.

3. The connection structure for the inlet and outlet water pipes of a refrigeration unit according to claim 2, characterized in that, An anti-detachment ring is provided on the opening at the other end of the telescopic sleeve away from the boss. The anti-detachment ring has a U-shaped ring structure and is fixedly connected to the telescopic sleeve. The diameter of the anti-detachment ring is smaller than the diameter of the locking disc.

4. The connection structure for the inlet and outlet water pipes of a refrigeration unit according to claim 3, characterized in that, The telescopic sleeve includes a flexible connecting part and a circular part, the flexible connecting part and the circular part are equidistant from each other, and an elastic sealing ring is sleeved between one of the circular parts and the anti-detachment ring.

5. The connection structure for the inlet and outlet water pipes of a refrigeration unit according to claim 4, characterized in that, The telescopic sleeve and the connecting pipe are fitted with a clearance.

6. The connection structure for the inlet and outlet water pipes of a refrigeration unit according to claim 5, characterized in that, The outer surface of the connecting pipe near the openings at both ends is provided with a threaded structure, and an anti-detachment hook is provided on one side of the threaded structure.

7. The connection structure for the inlet and outlet water pipes of a refrigeration unit according to claim 6, characterized in that, The anti-detachment hook is an elastic snap-fit ​​structure, and one side of the anti-detachment hook is inclined towards the opening of the connecting pipe.

8. The connection structure for the inlet and outlet water pipes of a refrigeration unit according to claim 7, characterized in that, The inner wall of the connecting pipe is coated with a high-temperature resistant heat-insulating coating.

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