A hose for a refrigerant system and a refrigerant system

Abstract

The application provides a hose for a refrigerant system and the refrigerant system. The hose for the refrigerant system comprises a hose body, the hose body being a plastic part, the hose body comprising a body section and a connecting section arranged along the length direction of the hose body and connected to each other; and a joint part comprising a plastic joint and a metal joint, the plastic joint being sleeved on the connecting section and being connected to the connecting section by welding to realize sealed connection, the metal joint being connected to the plastic joint and forming an integrated structure with the plastic joint. The metal joint and the plastic joint form the integrated structure without a gap, and the metal joint can improve the hardness and strength of the joint part, facilitating the butt joint of the hose and other pipelines of the refrigerant system. Since the plastic joint and the hose body are both plastic parts, the connection and reliable sealing can be realized by welding, thereby avoiding leakage caused by the gap at the connecting position of the joint part and the hose body.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of refrigerant system technology, specifically to a hose and refrigerant system for use in a refrigerant system. Background Technology

[0002] In related technologies, hoses used to transport refrigerant consist of a plastic hose body and metal fittings. Gaps are unavoidable at the connection point between the metal fitting and the hose body, making sealing at the fitting a significant challenge. A common solution is to achieve an interference fit through compression. However, this interference fit requires the use of additional metal crimping rings, which include an inner liner ring inside the hose and an outer crimping ring outside. The presence of the inner liner ring can cause localized necking of the hose, increasing system pressure drop. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a hose and a refrigerant system for a refrigerant system, which can achieve sealing of the joint components and will not cause local necking of the hose, thereby increasing the system pressure drop.

[0004] This application provides a hose for a refrigerant system, comprising: a hose body, the hose body being a plastic component, the hose body including a main body segment and a connecting segment arranged and connected to each other along the length direction of the hose body; and a connector component, including a plastic connector and a metal connector, the plastic connector being sleeved on the connecting segment and sealed to the connecting segment by welding, and the metal connector being connected to the plastic connector and forming an integral structure with the plastic connector.

[0005] The hose provided in this embodiment has a plastic body and a connector that combines a plastic connector with a metal connector. The metal connector and plastic connector form a single, seamless structure, and the metal connector increases the rigidity and strength of the connector, facilitating connection between the hose and other pipes in the refrigerant system. Since both the plastic connector and the hose body are plastic, they can be connected by welding. During welding, the plastic melts, fusing the connection section of the hose body with the plastic connector to achieve a reliable seal, thus preventing gaps and leakage at the connection point. Furthermore, the welding process occurs on the outside of the hose body, avoiding localized necking within the hose body and therefore not increasing system pressure drop.

[0006] Based on the above technical solution, the following improvements can be made to this application.

[0007] In one exemplary embodiment, the plastic connector includes a sealing section and a reinforcing section. The sealing section is sleeved on the connecting section and is welded to the connecting section to achieve a sealed connection. The reinforcing section is connected to the sealing section and is located on one side of the sealing section along its length. The metal connector includes an embedded section and an exposed section. The embedded section is at least partially located within the reinforcing section and forms an integral structure with the reinforcing section. The exposed section is connected to the embedded section and is exposed outside the hose body.

[0008] In one exemplary embodiment, the inner diameter of the reinforcing section is smaller than the inner diameter of the sealing section, so that the reinforcing section and the sealing section together form a supporting step, and the end of the connecting section near the reinforcing section abuts against the supporting step.

[0009] In one exemplary embodiment, the inner wall of the reinforcing section is flush with the inner wall of the hose body; and / or, the outer wall of the reinforcing section is flush with the outer wall of the sealing section.

[0010] In one exemplary embodiment, the embedded section is provided with an anti-detachment portion, and the reinforcing section is provided with an anti-detachment mating portion. The anti-detachment portion and the anti-detachment mating portion engage in a concave-convex fit to restrict the embedded section from detaching from the reinforcing section along the axial direction of the connector component.

[0011] In one exemplary embodiment, the end of the embedded segment away from the exposed segment is provided with an extension; the extension is embedded in the sealing segment and forms an integral structure with the sealing segment.

[0012] In an exemplary embodiment, the length of the extension is denoted as L, and the sum of the thicknesses of the sealing section and the connecting section is denoted as T, wherein L / T≥2.

[0013] In one exemplary embodiment, the plastic connector is an injection molded part, and the metal connector and the plastic connector are an integral structure formed by embedding; and / or, the plastic connector is a nylon connector, and the metal connector is a copper connector or a stainless steel connector.

[0014] In one exemplary embodiment, the hose body includes a barrier layer, a reinforcing layer, and a protective layer arranged sequentially from the inside to the outside along the thickness direction of the hose body, and the plastic connector is sleeved on the outside of the protective layer.

[0015] In one exemplary embodiment, the barrier layer, the reinforcement layer, and the protective layer located at the portion of the connecting segment are welded and sealed to the plastic joint to form a fusion zone.

[0016] In one exemplary embodiment, the barrier layer is made of a thermoplastic material; the reinforcing layer comprises a matrix material and a reinforcing material, wherein the matrix material of the reinforcing layer is the same as the material of the barrier layer; the protective layer comprises a matrix material and a wear-resistant agent, wherein the matrix material of the protective layer is the same as the material of the barrier layer.

[0017] In one exemplary embodiment, the barrier layer is made of nylon; and / or the reinforcing material comprises glass fiber, the glass fiber content being in the range of 15% to 30% by mass; and / or the abrasion resistant agent comprises silicone.

[0018] In one exemplary embodiment, the thickness of the barrier layer is in the range of 1 mm to 1.5 mm; and / or, the thickness of the reinforcing layer is in the range of 1 mm to 2 mm; and / or, the thickness of the protective layer is in the range of 0.5 mm to 1 mm.

[0019] This application also provides a refrigerant system, including a hose for a refrigerant system as described in any of the above examples.

[0020] In one exemplary embodiment, the refrigerant system further includes a compressor, and the number of hoses is at least one, with at least one of the compressor's return port and exhaust port connected to the hose, such that at least one of the compressor's return pipe and exhaust pipe is the hose. Attached Figure Description

[0021] Figure 1 Schematic diagrams of the hose structure provided in some embodiments of this application;

[0022] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the hose shown (section lines omitted).

[0023] Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle;

[0024] Figure 4 This is a partial cross-sectional view of the hose before welding, provided in some embodiments of this application;

[0025] Figure 5 This is a partial cross-sectional view of the hose after welding, provided in some embodiments of this application;

[0026] Figure 6 This is a partial structural diagram of a refrigerant system provided in some embodiments of this application;

[0027] Figure 7 This is a partial structural diagram of a refrigerant system in related technologies;

[0028] Figure 8 This is another partial structural diagram of a refrigerant system in related technologies;

[0029] Figure 9 A partial structural schematic diagram of a refrigerant system provided in some embodiments of this application;

[0030] Figure 10 Another partial structural schematic diagram of a refrigerant system provided for some embodiments of this application.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Hose body, 11. Main body section, 12. Connecting section, 13. Barrier layer, 14. Reinforcing layer, 15. Protective layer, 16. Co-existence zone;

[0033] 2. Connector components, 21. Plastic connector, 211. Sealing section, 212. Reinforcing section, 22. Metal connector, 221. Embedded section, 2211. Anti-detachment part, 2212. Extension part, 222. Exposed section, 23. Support step;

[0034] 100 Hose, 200 Refrigerant System, 202 Compressor, 204 Metal Rigid Pipe. Detailed Implementation

[0035] The principles and features of this application are described below with reference to the accompanying drawings. The examples given are only for explaining this application and are not intended to limit the scope of this application.

[0036] This application embodiment provides a hose 100 for a refrigerant system 200, including: a hose body 1 and a connector component 2, such as... Figure 1 As shown. The refrigerant system 200 is a system in which refrigerant flows. The refrigerant system 200 can be a unit used for refrigeration (such as an air conditioner, refrigerator, freezer, etc.) or a unit used for heating (such as an air conditioner, heat pump water heater, heat pump heating unit, etc.).

[0037] The hose body 1 is made of plastic and includes a main body section 11 and a connecting section 12 that are arranged and connected to each other along the length of the hose body 1.

[0038] like Figure 1 As shown, the connector component 2 includes a plastic connector 21 and a metal connector 22. The plastic connector 21 is sleeved on the connecting section 12 and is sealed to the connecting section 12 by welding (such as ultrasonic welding, laser welding, vibration friction welding, etc.). The metal connector 22 is connected to the plastic connector 21 and forms an integral structure with the plastic connector 21.

[0039] There can be two connecting segments 12, which are respectively connected to both ends of the hose body 1. There can also be two connector components 2, which are connected to the two connecting segments 12 one by one.

[0040] The hose 100 provided in this embodiment has a hose body 1 made of plastic, and a connector component 2 consisting of a plastic connector 21 and a metal connector 22, resulting in lower overall cost. The metal connector 22 and the plastic connector 21 form an integral structure without gaps, and the metal connector 22 increases the hardness and strength of the connector component 2, facilitating connection between the hose 100 and other pipelines of the refrigerant system 200. Since both the plastic connector 21 and the hose body 1 are plastic, they can be connected by welding. During welding, the plastic melts, fusing the connecting section 12 of the hose body 1 and the plastic connector 21 into a single unit, achieving a reliable seal and preventing gaps and leakage at the connection point between the connector component 2 and the hose body 1. Furthermore, the welding process occurs on the outside of the hose body 1, avoiding localized necking within the hose body 1 and thus not increasing system pressure drop.

[0041] In some exemplary embodiments, the plastic connector 21 is an injection-molded part. The metal connector 22 and the plastic connector 21 are an integral structure formed by embedding.

[0042] During the molding process, the metal connector 22 can be pre-embedded in the mold of the plastic connector 21, and then injection molded together. The molded plastic connector 21 and the metal connector 22 form an integral structure.

[0043] In some exemplary embodiments, such as Figure 2 and Figure 3 As shown, the plastic connector 21 includes a sealing section 211 and a reinforcing section 212. The sealing section 211 is sleeved on the connecting section 12 and is welded to the connecting section 12 to achieve a sealed connection. The reinforcing section 212 is connected to the sealing section 211 and is located on one side of the sealing section 211 along its length.

[0044] like Figure 3 As shown, the metal connector 22 includes an embedded section 221 and an exposed section 222. The embedded section 221 is at least partially located within the reinforcing section 212 and forms an integral structure with the reinforcing section 212. The exposed section 222 is connected to the embedded section 221 and is exposed outside the hose body 1.

[0045] The sealing section 211 of the plastic connector 21 is sealed to the connecting section 12 of the hose body 1, achieving a sealed connection between the connector component 2 and the hose body 1. The embedded section 221 of the metal connector 22 is embedded within the reinforcing section 212 of the plastic connector 21, forming an integral structure with the reinforcing section 212, which strengthens the plastic connector 21 and improves its resistance to deformation. The exposed section 222 of the metal connector 22 is exposed outside the hose body 1, facilitating connection with other pipes in the refrigerant system 200.

[0046] In some exemplary embodiments, such as Figure 3 As shown, the inner diameter of the reinforcing section 212 is smaller than the inner diameter of the sealing section 211, so that the reinforcing section 212 and the sealing section 211 together form a supporting step 23, and the end of the connecting section 12 near the reinforcing section 212 abuts against the supporting step 23. In this way, the supporting step 23 can play a positioning role, which facilitates the pre-positioning of the connector component 2 and the hose body 1 during welding. During welding, the connector component 2 is fitted onto the connecting section 12 until the connecting section 12 abuts against the supporting step 23.

[0047] In some embodiments, the inner diameter of the reinforcing section 212 is greater than or equal to the inner diameter of the connecting section 12, which can prevent localized necking within the hose 100 from increasing the system pressure drop.

[0048] In some exemplary embodiments, such as Figure 3 As shown, the inner wall of the reinforcing section 212 is flush with the inner wall of the hose body 1, and the outer wall of the reinforcing section 212 is flush with the outer wall of the sealing section 211.

[0049] The inner wall of the hose 100 has a relatively smooth structure, which facilitates the smooth flow of refrigerant. The outer wall of the plastic connector 21 has a relatively regular structure, which is convenient for processing and shaping. Furthermore, this makes the wall thickness of the reinforcing section 212 greater than that of the sealing section 211, which helps to improve the strength of the reinforcing section 212 and also facilitates the embedding section 221 to be embedded in the reinforcing section 212.

[0050] In some exemplary embodiments, such as Figure 3 As shown, the insert section 221 is provided with an anti-detachment part 2211, and the reinforcing section 212 is provided with an anti-detachment mating part. The anti-detachment part 2211 and the anti-detachment mating part are engaged to restrict the insert section 221 from detaching from the reinforcing section 212 along the axial direction of the connector component 2.

[0051] This increases the contact area between the embedded section 221 and the reinforcing section 212, which helps to improve the connection strength and reliability of the embedded section 221 and the reinforcing section 212. It also prevents the embedded section 221 from coming out of the plastic connector 21 when the connector component 2 is pulled, thus preventing the connector component 2 from falling apart. This helps to improve the reliability of the hose 100.

[0052] The structure of the anti-detachment part 2211 is not limited; for example, it can be a corrugated structure, a serrated structure, a raised rib, a raised bump, a recess, etc. During the injection molding process of the plastic connector 21, the liquid raw material can encapsulate the anti-detachment part 2211, and after solidification, it can form an anti-detachment mating part.

[0053] In some exemplary embodiments, such as Figure 3 and Figure 5 As shown, the embedded section 221 has an extension 2212 at the end away from the exposed section 222. The extension 2212 is embedded in the sealing section 211 and forms an integral structure with the sealing section 211. The extension 2212 can be a straight pipe section to adapt to the thin-walled structure of the sealing section 211.

[0054] A weld will be formed at the junction of the plastic connector 21 and the hose body 1, which is a relatively weak part of the hose. Therefore, embedding a portion of the insert section 221 into the sealing section 211 can increase the structural strength of the welded joint between the connector component 2 and the hose body 1, and help improve the deformation resistance of the welded joint between the connector component 2 and the hose body 1.

[0055] In some exemplary embodiments, such as Figure 5 As shown, the length of the extension 2212 is denoted as L, and the sum of the thicknesses of the sealing section 211 and the connecting section 12 is denoted as T, where L / T ≥ 2. This ensures that the extension 2212 can effectively reinforce the structure. Of course, the ratio of L to T is not limited to the above range and can be adjusted as needed.

[0056] In some exemplary embodiments, such as Figure 3 and Figure 4 As shown, the hose body 1 includes a barrier layer 13, a reinforcing layer 14, and a protective layer 15 arranged sequentially from the inside to the outside along the thickness direction of the hose body 1. The plastic connector 21 is sleeved on the outside of the protective layer 15.

[0057] The barrier layer 13 features high barrier properties and resistance to refrigerant corrosion. The barrier layer 13 prevents refrigerant inside the hose 100 from leaking out through the hose 100 wall. The reinforcing layer 14 features high rigidity, which increases the rigidity of the hose body 1. The protective layer 15 features wear resistance and impact resistance, which increases the surface hardness of the hose body 1.

[0058] In some exemplary embodiments, the barrier layer 13, the reinforcement layer 14, and the protective layer 15 are located at portions of the connecting section 12, and are sealed to the plastic connector 21 by welding (e.g., ultrasonic welding) to form a fusion region 16, such as... Figure 5 As shown.

[0059] In this way, the multi-layered structure of the connecting section 12 and the plastic connector 21 melt together to form a fusion zone 16. Not only is there no gap between the plastic connector 21 and the connecting section 12, but there is also no gap between the layers of the connecting section 12, thereby effectively improving the sealing of the connection between the hose body 1 and the connector component 2.

[0060] In some exemplary embodiments, the barrier layer 13 is made of a thermoplastic material suitable for welding (e.g., ultrasonic welding).

[0061] The reinforcing layer 14 consists of a matrix material and a reinforcing material. The matrix material of the reinforcing layer 14 is the same as that of the barrier layer 13, resulting in good compatibility between the reinforcing layer 14 and the barrier layer 13, which facilitates their connection by welding. The reinforcing material provides reinforcement, thus enabling the reinforcing layer 14 to perform its reinforcing function.

[0062] The protective layer 15 is made of a matrix material and a wear-resistant agent. The matrix material of the protective layer 15 is the same as that of the barrier layer 13, which makes the reinforcing layer 14 compatible with the barrier layer 13 and the reinforcing layer 14, and easy to connect them together by welding. The wear-resistant agent can play a wear-resistant role, so as to realize the wear-resistant function of the protective layer 15.

[0063] In some exemplary embodiments, the barrier layer 13 is made of nylon (PA), such as PA6 or PA12, which has excellent barrier properties against refrigerants such as R410A and R32, is resistant to chemical corrosion, is a thermoplastic material, is suitable for welding, and has moderate flexibility, allowing it to be processed into thin-walled structures.

[0064] In some exemplary embodiments, the reinforcing material includes, but is not limited to, glass fiber (GF), which has a good reinforcing effect. The mass content of glass fiber is in the range of 15% to 30%, such as 15%, 18%, 20%, 23%, 25%, 28%, 30%, etc., which can balance the stiffness and processability of the reinforcing layer 14.

[0065] In some exemplary embodiments, the wear-resistant agent includes, but is not limited to, silicone (which can be added as a wear-resistant filler), and may also include mineral fillers such as talc and calcium carbonate.

[0066] In some exemplary embodiments, the thickness of the barrier layer 13 may be in the range of, but not limited to, 1 mm to 1.5 mm, such as 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, etc., which can balance barrier performance, processing cost and the weight of the hose 100.

[0067] The thickness of the reinforcing layer 14 can be in the range of 1 mm to 2 mm, such as 1 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.8 mm, 2.0 mm, etc., which can balance the reinforcing performance, processing cost and the weight of the hose 100.

[0068] The thickness of the protective layer 15 can be in the range of 0.5mm to 1mm, such as 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, etc., which can balance wear resistance, processing cost and the weight of hose 100.

[0069] In some exemplary embodiments, the plastic connector 21 is a nylon connector, such as PA6 or PA12. The nylon connector has good compatibility with the hose body 1, facilitating a sealed connection through welding.

[0070] In some exemplary embodiments, the metal connector 22 is a copper connector or a stainless steel connector, which facilitates connection with the refrigerant pipeline (such as copper pipe or stainless steel pipe) of the refrigerant system 200. The metal connector 22 of the appropriate material can be selected according to the material of the refrigerant pipeline to be connected, so as to reduce the risk of electrochemical corrosion at the connection point.

[0071] like Figure 6 As shown, this application embodiment also provides a refrigerant system 200, including the hose 100 for the refrigerant system 200 of any of the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be repeated here.

[0072] In some exemplary embodiments, the refrigerant system 200 further includes a compressor 202, and at least one hose 100. At least one of the return port and the discharge port of the compressor 202 is connected to the hose 100, such that at least one of the return pipe and the discharge pipe of the compressor 202 is the hose 100. The refrigerant system 200 also includes components such as a condenser, evaporator, throttling device, and reversing valve connected via refrigerant piping, enabling the refrigerant system to form a refrigerant circuit.

[0073] like Figure 7 and Figure 8 As shown, the conventional flexible hose 100 used in the refrigerant system 200 is generally used to connect the indoor and outdoor units to adapt to different installation scenarios. The return and exhaust pipes of the compressor 202 are made of rigid metal tubing 204 (such as copper tubing). However, the compressor 202 generates significant vibrations during operation, causing considerable vibration stress on the rigid metal tubing 204. To alleviate this vibration stress, the rigid metal tubing 204 needs to be designed with a winding structure, resulting in a complex piping layout.

[0074] In the embodiments of this application, such as Figure 9 and Figure 10 As shown, at least one of the return pipe and the exhaust pipe of the compressor 202 can be configured as the aforementioned flexible hose 100. Since the flexible hose 100 itself has good flexibility and deformation ability, it can effectively alleviate the vibration pressure caused by the vibration of the compressor 202. Therefore, the flexible hose 100 does not need to be configured as a winding structure, but can be configured as a straight connection structure, which greatly simplifies the pipeline layout of the refrigerant system 200.

[0075] The compressor 202 can have its return port connected to a gas-liquid separator, and the return pipe can be connected to the inlet of the gas-liquid separator. The exhaust pipe can be connected to the exhaust port of the compressor 202.

[0076] Of course, the hose 100 provided in this embodiment can also be used in other locations of the refrigerant system 200, such as the connecting pipe between the indoor unit and the outdoor unit.

[0077] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0080] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A flexible hose for a refrigerant system, characterized in that, include: The hose body is a plastic part, and the hose body includes a main body segment and a connecting segment that are arranged and connected to each other along the length direction of the hose body; and The connector component includes a plastic connector and a metal connector. The plastic connector is sleeved on the connecting section and is sealed to the connecting section by welding. The metal connector is connected to the plastic connector and forms an integral structure with the plastic connector.

2. The hose for a refrigerant system according to claim 1, characterized in that, The plastic joint includes a sealing section and a reinforcing section. The sealing section is sleeved on the connecting section and is welded to the connecting section to achieve a sealed connection. The reinforcing section is connected to the sealing section and is located on one side of the sealing section along its length. The metal connector includes an embedded section and an exposed section; the embedded section is at least partially located within the reinforcing section and forms an integral structure with the reinforcing section; the exposed section is connected to the embedded section and exposed outside the hose body.

3. The hose for a refrigerant system according to claim 2, characterized in that, The inner diameter of the reinforcing section is smaller than the inner diameter of the sealing section, so that the reinforcing section and the sealing section together form a supporting step, and the end of the connecting section near the reinforcing section abuts against the supporting step.

4. The hose for a refrigerant system according to claim 3, characterized in that, The inner wall of the reinforced section is flush with the inner wall of the hose body; and / or The outer wall of the reinforced section is flush with the outer wall of the sealing section.

5. The hose for a refrigerant system according to claim 2, characterized in that, The embedded section is provided with an anti-detachment part, and the reinforcing section is provided with an anti-detachment mating part. The anti-detachment part and the anti-detachment mating part are engaged to restrict the embedded section from detaching from the reinforcing section along the axial direction of the connector component.

6. The hose for a refrigerant system according to claim 2, characterized in that, The embedded section has an extension at one end away from the exposed section; the extension is embedded in the sealing section and forms an integral structure with the sealing section.

7. The hose for a refrigerant system according to claim 6, characterized in that, The length of the extension is denoted as L, and the sum of the thicknesses of the sealing section and the connecting section is denoted as T, where L / T≥2.

8. The hose for a refrigerant system according to any one of claims 1 to 7, characterized in that, The plastic connector is an injection-molded part, and the metal connector and the plastic connector are an integrally formed structure; and / or The plastic connector is a nylon connector, and the metal connector is a copper connector or a stainless steel connector.

9. The hose for a refrigerant system according to any one of claims 1 to 7, characterized in that, The hose body includes a barrier layer, a reinforcement layer and a protective layer arranged sequentially from the inside to the outside along the thickness direction of the hose body, and the plastic connector is sleeved on the outside of the protective layer.

10. The hose for a refrigerant system according to claim 9, characterized in that, The barrier layer, the reinforcement layer, and the protective layer located in the portion of the connecting section are welded and sealed to the plastic joint to form a fusion zone.

11. The hose for a refrigerant system according to claim 10, characterized in that, The barrier layer is made of thermoplastic material; The reinforcing layer comprises a matrix material and a reinforcing material, wherein the matrix material of the reinforcing layer is the same as the material of the barrier layer; The protective layer is made of a matrix material and a wear-resistant agent, and the matrix material of the protective layer is the same as that of the barrier layer.

12. The hose for a refrigerant system according to claim 11, characterized in that, The barrier layer is made of nylon; and / or The reinforcing material comprises glass fiber, the glass fiber content being in the range of 15% to 30% by mass; and / or the wear-resistant agent comprises silicone.

13. The hose for a refrigerant system according to claim 9, characterized in that, The thickness of the barrier layer is in the range of 1 mm to 1.5 mm; and / or the thickness of the reinforcing layer is in the range of 1 mm to 2 mm; and / or The thickness of the protective layer is in the range of 0.5 mm to 1 mm.

14. A refrigerant system, characterized in that, Includes hoses for refrigerant systems as described in any one of claims 1 to 13.

15. The refrigerant system according to claim 14, characterized in that, The refrigerant system further includes a compressor, and the number of hoses is at least one. At least one of the compressor's return port and exhaust port is connected to the hose, such that at least one of the compressor's return pipe and exhaust pipe is the hose.

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