Working medium pipe joint, working medium pipe connecting structure, connecting pipe assembly and automobile air conditioner

Abstract

The application discloses a working medium pipe joint, a working medium pipe connecting structure, a connecting pipe assembly and an automobile air conditioner, wherein the working medium pipe joint comprises a pipe body part and a supporting pipe, an outer surface of the pipe body part is provided with a connecting structure, the connecting structure is used for connecting a rubber pipe, and the supporting pipe is arranged in the pipe body part, and an outer surface of the supporting pipe is in contact with an inner surface of the pipe body part. The technical scheme has the characteristics of high strength of the working medium pipe joint, difficulty in deformation and suitability for high-pressure working medium.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of working medium pipes, in particular to a working medium pipe joint, a working medium pipe connecting structure, a working medium pipe assembly and an automobile air conditioner. BACKGROUND

[0002] The working medium pipe joint is a component capable of connecting a flexible working medium pipe and a rigid working medium pipe. In order to prevent working medium from leaking at the working medium pipe joint and ensure the sealing and stability of the working medium pipe joint connection, a fastening structure is usually required to compress the working medium pipe joint and the flexible working medium pipe. The existing working medium pipe joint has the problem of easy deformation during assembly. SUMMARY

[0003] The main purpose of the present application is to provide a working medium pipe joint, which aims to improve the strength of the working medium pipe joint and prevent the working medium pipe joint from deforming due to assembly, so that the working medium pipe is suitable for high-pressure working medium.

[0004] To achieve the above purpose, the present application provides a working medium pipe joint, which comprises:

[0005] a pipe body part, an outer surface of the pipe body part is provided with a connecting structure, and the connecting structure is used for connecting a rubber pipe; and

[0006] a support pipe arranged in the pipe body part, and an outer surface of the support pipe is in contact with an inner surface of the pipe body part.

[0007] Optionally, the tensile strength of the support pipe is greater than the tensile strength of the pipe body part.

[0008] Optionally, the support pipe is a steel pipe, and the pipe body part is a copper pipe body part.

[0009] Optionally, the pipe body part comprises:

[0010] a connecting part, the connecting structure is located on an outer surface of the connecting part, and the support pipe is arranged in the connecting part;

[0011] an extension part connected to one end of the connecting part, and an inner diameter of the connecting part is greater than an inner diameter of the extension part.

[0012] Optionally, the inner diameter of the support pipe is 0.8-1.3 times the inner diameter of the extension part.

[0013] Optionally, the connecting structure comprises any one or more of a boss, an inverted hook part and a groove.

[0014] Optionally, the working medium pipe joint further comprises one or more of a sound-absorbing piece, a flow mixer and a flow restrictor arranged in the pipe body part.

[0015] Optionally, the sound-damping piece comprises a sound-damping layer in a sheet shape or a cylindrical shape or a conical shape.

[0016] The flow mixer comprises a flow mixing layer in a sheet shape or a cylindrical shape or a conical shape.

[0017] Optionally, the sound-damping piece comprises a plurality of sound-damping layers; and the flow mixer comprises a plurality of flow mixing layers.

[0018] Optionally, the sound-damping piece or the flow mixer or the flow restrictor is welded to the pipe body; or,

[0019] The sound-damping piece or the flow mixer or the flow restrictor is snap-connected to the pipe body; or,

[0020] An outer surface of the sound-damping piece or the flow mixer or the flow restrictor is provided with a convex ring, an inner surface of the pipe body is provided with two positioning protrusions, the two positioning protrusions are located on both sides of the convex ring, the positioning protrusions abut against the convex ring, and the protrusions comprise convex bumps or convex ridges.

[0021] Optionally, one or more of the sound-damping piece, the flow mixer and the flow restrictor is arranged in the support pipe.

[0022] Optionally, the working medium pipe joint further comprises a filter arranged in the pipe body.

[0023] Optionally, the filter has a mesh number greater than or equal to 80 mesh.

[0024] Optionally, the filter has a mesh number of 80 mesh to 200 mesh.

[0025] The application further provides a working medium pipe connecting structure, comprising:

[0026] The working medium pipe joint, one end of the working medium pipe joint is used for connecting a working medium pipe, and the working medium pipe joint has a mechanical strength greater than the working medium pipe.

[0027] A rubber pipe is sleeved on the working medium pipe joint; and

[0028] A fastening sleeve is sleeved on at least part of the rubber pipe, and the fastening member compresses the rubber pipe, so that the rubber pipe is tightly fitted with the working medium pipe joint.

[0029] The application further provides a connecting pipe assembly, comprising a working medium pipe assembly, the working medium pipe assembly comprising the working medium pipe connecting structure, and the working medium pipe assembly being used for connecting an air conditioner outdoor unit and an air conditioner indoor unit.

[0030] Optionally, the connecting pipe assembly further comprises an electric wire, a water pipe and a cable tie for bundling the working medium pipe assembly, the electric wire and the water pipe.

[0031] The application further provides an automobile air conditioner, characterized by comprising:

[0032] An air conditioner indoor unit is arranged in a vehicle body;

[0033] An air conditioner outdoor unit is arranged on the outer surface of the vehicle body; and

[0034] The working medium pipe assembly is arranged through the vehicle body to connect the air conditioner indoor unit and the air conditioner outdoor unit, and comprises the working medium pipe connecting structure.

[0035] Optionally, the automobile air conditioner further comprises a working medium, and the working medium pipe assembly is used for conveying the working medium, and the working pressure of the working medium is less than or equal to 5 MPa.

[0036] The support pipe supports the pipe body part, and when the circumferential surface of the pipe body part is subjected to external pressure, the support pipe can support the pipe body part, so that the pipe body part can resist external pressure not only by its own structural strength but also by the support force of the support pipe, which is beneficial to prevent the pipe body part from deforming or reduce the deformation amount of the pipe body part. In addition, based on the high-strength characteristics of the working medium pipe joint, the rubber pipe can be connected to the working medium pipe joint with greater clamping pressure, which guarantees the airtightness and stability of the connection between the rubber pipe and the working medium pipe joint, and can be applied to working medium with higher pressure. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, without creative labor, other drawings can also be obtained from the structure shown in these drawings.

[0038] Figure 1 It is an embodiment of the structure of the working medium pipe joint of the present application.

[0039] Figure 2 It is Figure 1 It is a local enlarged view of A6 in FIG. 6.

[0040] Figure 3 It is another embodiment of the structure of the working medium pipe joint of the present application.

[0041] Figure 4 It is an embodiment of the structure of the working medium pipe connecting structure of the present application.

[0042] Explanation of reference signs:

[0043]

[0044]

[0045] The objectives, functional characteristics and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the protection scope of the present application.

[0047] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0048] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and should not be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text is that it includes three parallel schemes. Taking “A and / or B” as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those of ordinary skill in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0049] The present application provides a working medium pipe joint 100.

[0050] In the embodiments of the present application, as Figure 1As shown, the working medium pipe joint 100 comprises: a pipe body part 110 and a support part, the outer surface of the pipe body part 110 is provided with a connecting structure 120, the connecting structure 120 is used for connecting the rubber pipe 200; the support pipe 140 is arranged in the pipe body part 110, and the outer surface of the support pipe 140 is in contact with the inner surface of the pipe body part 110. When the working medium pipe joint 100 is connected with the rubber pipe 200, first, the rubber pipe 200 is sleeved on the working medium pipe joint 100, and then the fastening sleeve 300 is sleeved on the rubber pipe 200, and the fastening sleeve 300 is deformed after being pressed by external force, the deformed fastening sleeve 300 extrudes the rubber pipe 200, so that force is applied to the working medium pipe joint 100, so that the working medium pipe joint 100 and the rubber pipe 200 are connected tightly.

[0051] The technical scheme of the present application adopts the support pipe 140 to support the pipe body part 110, when the circumferential surface of the pipe body part 110 is subjected to external pressure, the support pipe 140 can support the pipe body part 110, so that the pipe body part 110 can not only rely on its own structural strength to resist external pressure, but also can resist external pressure with the support force of the support pipe 140, which is beneficial to prevent the pipe body part 110 from deforming or reduce the deformation amount of the pipe body part 110. In addition, based on the high strength characteristics of the working medium pipe joint 100, the rubber pipe 200 can be connected to the working medium pipe joint 100 with greater clamping pressure, which guarantees the airtightness and stability of the connection between the rubber pipe 200 and the working medium pipe joint 100, and can be applied to working medium with higher pressure.

[0052] Further, in the embodiment, the tensile strength of the support pipe 140 is greater than the tensile strength of the pipe body part 110. The support pipe 140 has higher tensile strength than the pipe body part 110, and the support pipe 140 is less likely to deform than the pipe body part 110, and the presence of the support pipe 140 is beneficial to guarantee the shape of the working medium flow channel in the working medium pipe joint 100, avoid the influence of the deformation of the outer surface of the working medium pipe joint 100 on the flow channel, and guarantee the use performance of the working medium pipe joint 100.

[0053] Further, in the embodiment, the support pipe 140 comprises a steel pipe, and the pipe body part 110 comprises a copper pipe body part 110. The outer surface of the pipe body part 110 needs to be provided with a connecting structure 120 to enhance the connection stability of the pipe body part 110 to the rubber pipe 200. The copper pipe body part 110 has good processing performance due to its material, which is convenient for processing the connecting structure 120 on the outer surface of the pipe body part 110. The steel pipe has good tensile strength, for example, SUS301 type steel material, the tensile strength of which is greater than or equal to 520 N / mm 2 ; the tensile strength of SUS301J1 type steel material is greater than or equal to 570 N / mm 2; SUS304N2 type steel material, whose tensile strength is greater than or equal to 690 N / mm 2 ; SUS304LN type steel material, whose tensile strength is greater than or equal to 550 N / mm 2 The support pipe can effectively support the copper pipe and help prevent or reduce deformation of the copper pipe body portion 110. In other embodiments, the support pipe can be a brass pipe, the pipe body portion can be a red copper pipe body portion, and the brass pipe can have greater tensile strength than the red copper pipe body portion, so that the working medium pipe joint can effectively enhance the compression resistance.

[0054] Further, in this embodiment, as shown in Figure 1 The pipe body portion 110 includes a connecting portion 111 and an extension portion 112. The connecting structure 120 is located on the outer surface of the connecting portion 111, and the support pipe 140 is arranged in the connecting portion 111. The extension portion 112 is connected to one end of the connecting portion 111, and the inner diameter of the connecting portion 111 is greater than that of the extension portion 112. The connecting portion 111 is used to connect with the rubber pipe 200, and the extension portion 112 allows the joint to have a portion outside the rubber pipe 200, so that the working medium pipe joint 100 can be conveniently connected with the working medium pipe or installed on the equipment by using the extension portion 112. When the working medium pipe joint 100 is assembled, the connecting portion 111 is a part under great external pressure, and the support pipe 140 arranged in the connecting portion 111 can provide targeted support for the connecting portion 111, which helps to control the length of the support pipe 140, reduce the weight of the working medium pipe joint 100, and reduce the cost of the working medium pipe joint 100. The inner diameter of the connecting portion 111 is greater than that of the extension portion 112, so that the connecting portion 111 has a larger installation space for the support pipe 140, which helps to reduce the influence of the installation of the support pipe 140 on the flow of the working medium pipe and helps to keep the flux of the working medium pipe joint 100 consistent in the axial direction.

[0055] Further, in the embodiment, one end of the support pipe 140 is connected with the extension part 112, and the inner diameter of the support pipe 140 is 0.8-1.3 times of the inner diameter of the extension part 112. The inner diameter of the support pipe 140 is similar to or equal to the inner diameter of the extension part 112, so that when the working medium in the working medium pipe joint 100 flows between the extension part 112 and the support pipe 140, the state of the working medium changes little, which is beneficial to improve the stability of the working medium flow in the working medium pipe joint 100. In other embodiments, the support pipe is connected with the extension part, so that there is no gap or small gap between the support pipe and the extension part, which is also beneficial to improve the stability of the working medium flow in the working medium pipe joint, and is also beneficial to make the strength of the whole working medium pipe joint high, and to ensure the safety performance of the working medium pipe joint.

[0056] Further, in the embodiment, as shown in Figure 1 The connecting structure 120 includes a barb part 123. When the working medium pipe joint 100 is assembled, the rubber tube 200 can be deformed to cooperate with the barb part 123. When the rubber tube 200 is subjected to an external force in the axial direction of the working medium pipe joint 100, the working medium pipe joint 100 can effectively prevent the rubber tube 200 from being pulled off. The cooperation between the rubber tube 200 and the barb part 123 strengthens the sealing and stability of the connection between the working medium pipe joint 100 and the rubber tube 200.

[0057] The connecting structure 120 in the embodiment is not limited to the above technical solutions. In other embodiments, the connecting structure can include a groove. After the working medium pipe joint is assembled with the rubber tube and the fastening sleeve, the rubber tube is deformed by being extruded by the fastening sleeve, so that a part of the rubber tube enters the groove and is connected with the groove. When the rubber tube is subjected to a pulling force or a pushing force in the axial direction of the working medium pipe joint, the part of the rubber tube entering the groove can be clamped in the groove, thereby preventing the rubber tube from being pulled off. It should be noted that the setting of the groove weakens the compression resistance of the connecting part, and the groove is prone to deformation. Therefore, the support pipe is arranged inside the connecting part in the embodiment, which can effectively compensate for the lack of compression resistance caused by the groove, reduce the deformation amount of the working medium pipe joint during assembly, or prevent the working medium pipe joint from deforming during assembly.

[0058] In other embodiments, the connecting structure 120 can also be, as shown in Figure 3As shown, the connecting structure 120 includes a barb 123 and a groove 122, which cooperate with the rubber tube 200 to improve the connection stability and sealing performance of the rubber tube 200 and the working medium pipe joint 100; alternatively, the connecting structure 120 includes a boss and a barb 123; alternatively, the connecting structure 120 includes a boss, and when the working medium pipe joint 100 is assembled, the rubber tube 200 can be deformed to cooperate with the boss, thereby improving the sealing performance and stability of the connection between the working medium pipe joint 100 and the rubber tube 200.

[0059] Further, in the present embodiment, as shown in Figure 1 、 Figure 2 The working medium pipe joint 100 further includes a silencer 150 arranged in the pipe body 110. The working medium can generate noise when flowing due to the influence of flow channel changes and compressor frequency, and such noise is usually difficult to eliminate. In the present embodiment, the silencer 150 is arranged in the working medium pipe joint 100, and when the working medium flows through the silencer 150, the silencer 150 can directly act on the refrigerant to reduce the noise of the refrigerant. Specifically, the silencer 150 is arranged inside the support pipe 140, which has high strength and is not easy to deform, thereby effectively ensuring the safety performance of the small hardware installation.

[0060] Further, in the present embodiment, as shown in Figure 1 The silencer 150 includes a conical cylindrical silencer layer, and specifically, the silencer layer has a plurality of silencer holes. The conical cylindrical silencer layer has the characteristics of large contact area with the refrigerant and good silencing effect, and is convenient to install in the tubular pipe body 110. Of course, the silencer 150 in the present embodiment is not limited to the above technical solution, and in other embodiments, the silencer can include a sheet-shaped silencer layer; alternatively, the silencer includes a cylindrical silencer layer, which has the characteristic of small influence on the flow state of the working medium.

[0061] Further, in the present embodiment, as shown in Figure 1 、 Figure 2As shown, the outer surface of the sound attenuation member 150 is provided with a convex ring 151, the inner surface of the pipe body part 110 is provided with two positioning protrusions 113, the two positioning protrusions 113 are located on both sides of the convex ring 151, the positioning protrusions 113 abut the convex ring 151, and the sound attenuation member 150 is fixed by the positioning protrusions 113, having the characteristics of convenient installation of the sound attenuation member 150. The main external force acting on the sound attenuation member 150 comes from the working medium, and when the working medium flows in the working medium pipe joint 100, it has a thrust along the axial direction of the working medium pipe joint 100. The positioning protrusions 113 limit the displacement of the sound attenuation member 150 in the axial direction of the working medium pipe joint 100, and can effectively fix the sound attenuation member 150. It should be noted that the protrusions in the embodiment are convex, which can be formed by local stamping on the outer surface of the copper pipe joint, so that the pipe wall of the working medium pipe joint 100 is locally raised along the axis of the working medium pipe joint 100 to facilitate the installation of the sound attenuation member 150; in other embodiments, the protrusions can also be convex ridges, which extend along the circumference of the pipe body part, and the contact area between the convex ridges and the convex ring on the sound attenuation member is large, having the characteristics of good fixing effect on the sound attenuation member; also, the protrusions can include convex ridges, which can be in the form of a spiral, and the convex ring is an open ring matched with the convex ridges, the sound attenuation member can be connected with the convex ridges by rotating, having the characteristics of convenient installation. The installation method of the sound attenuation member is not limited to the above technical solution, in other embodiments, the sound attenuation member can also be welded with the pipe body part, having the effect of stable connection of the sound attenuation member; also, the sound attenuation member can be connected with the pipe body part by snap connection, having the characteristics of convenient installation of the sound attenuation member.

[0062] In other embodiments, the sound attenuation member includes a plurality of sound attenuation layers, specifically, a plurality of sound attenuation layers are arranged along the radial direction of the working medium pipe joint, a gap is left between adjacent two sound attenuation layers, adjacent two sound attenuation layers are connected by connecting rods, or one end of a plurality of sound attenuation layers are connected with each other, and the other end are spaced apart from each other, and the working medium can flow between the sound attenuation layers, realizing multiple sound attenuation of the working medium, and a plurality of sound attenuation layers jointly act, having the characteristics of good sound attenuation effect.

[0063] The working medium pipe joint described in the embodiment is not limited to the technical solutions described above, and in other embodiments, the working medium pipe joint further comprises a silencer, a flow mixer and a flow reducer arranged in the pipe body part. The working medium flowing in the working medium pipe is prone to bubble rupture and turbulent flow, which can cause noise of the working medium and affect the use experience of the customer. The flow mixer and the silencer can effectively reduce the noise, and the flow reducer can reduce the pressure of the working medium. Arranging the flow mixer and the flow reducer in the support pipe can effectively improve the safety performance of the installation of the flow mixer and the flow reducer. Specifically, the flow mixer comprises a sheet-shaped, cylindrical or conical flow mixing layer, and the flow mixer comprises a plurality of flow mixing layers, which can effectively enhance the flow mixing effect of the flow mixer.

[0064] Further, in the embodiment, as shown in Figure 1 Specifically, the working medium pipe joint 100 is used for passing refrigerant, and the refrigerant includes R22 type refrigerant, R410A type refrigerant, R32 type refrigerant, R134a type refrigerant, R290 type refrigerant and the like. In addition, the working medium pipe joint 100 is used for passing refrigeration oil, which is used to prevent the refrigerant from solidifying and causing the flowability of the refrigerant to decrease. In the working process of the working medium pipe joint 100, the presence of impurities such as stains, metal rust and welding slag in the refrigerant affects the working effect of the refrigerant. In the embodiment, the filter 160 is used to filter the refrigerant, which can effectively intercept solid impurities, keep the refrigerant clean and improve the stability of the working of the refrigerant.

[0065] Further, the mesh number of the filter 160 is greater than or equal to 80 meshes. Since the impurities in the working medium are mainly stains, metal rust and welding slag, these impurities have the characteristic of small particle size. If the filtering mesh number of the filter 160 is too large, the filter hole diameter of the filter 160 will be too large, and the impurities in the working medium cannot be effectively intercepted. Therefore, the mesh number of the filter 160 is controlled to be greater than or equal to 80 meshes to ensure the filtering effect of the filter 160.

[0066] Further, in the embodiment, the mesh number of the filter 160 is 120 meshes, which has the characteristics of good filtering effect and small influence on the working flow. Of course, in other embodiments, the mesh number of the filter can be 80 meshes; the mesh number of the filter can also be 100 meshes; the mesh number of the filter can also be 150 meshes; and the mesh number of the filter can also be 200 meshes, which has the characteristic of good filtering effect.

[0067] The application further discloses a working medium pipe connecting structure, as shown in Figure 4As shown, the working medium pipe connecting structure includes a rubber tube 200, a fastening sleeve 300, and a working medium pipe joint 100. The specific structure of the working medium pipe joint 100 refers to the above-mentioned embodiments. Since the working medium pipe connecting structure adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the rubber tube 200 is sleeved with the working medium pipe joint 100, the fastening sleeve 300 is sleeved with at least part of the rubber tube 200, and the fastener compresses the rubber tube 200, so that the rubber tube 200 is tightly fitted with the working medium pipe joint 100. The rubber tube 200 has the characteristics of shock absorption, noise reduction and good flexibility, and can be applied to complex installation space.

[0068] In this embodiment, the rubber tube 200 includes a shielding layer, an inner rubber layer, a reinforcing layer, and an outer rubber layer arranged in sequence from inside to outside; the shielding layer abuts against the barb portion 123, and the outer rubber layer abuts against the fastening sleeve 300. The rubber tube 200 in this embodiment is not limited to the above technical solution. In other embodiments, the rubber tube 200 includes an inner rubber layer, a shielding layer, a middle rubber layer, a reinforcing layer, and an outer rubber layer arranged in sequence from inside to outside; the inner rubber layer abuts against the barb portion 123, and the outer rubber layer abuts against the fastening sleeve 300.

[0069] Further, in this embodiment, the inner rubber layer includes any one of a ternary ethylene-propylene rubber inner rubber layer, a chlorosulfonated polyethylene inner rubber layer, a butyl rubber inner rubber layer, a chlorinated butyl rubber inner rubber layer, or a brominated butyl rubber inner rubber layer; the middle rubber layer includes any one of a ternary ethylene-propylene rubber middle rubber layer, a chlorosulfonated polyethylene middle rubber layer, a butyl rubber middle rubber layer, a chlorinated butyl rubber middle rubber layer, or a brominated butyl rubber middle rubber layer; the outer rubber layer includes any one of a ternary ethylene-propylene rubber outer rubber layer, a chlorosulfonated polyethylene outer rubber layer, a butyl rubber outer rubber layer, a chlorinated butyl rubber outer rubber layer, or a brominated butyl rubber outer rubber layer; the shielding layer includes a nylon shielding layer; and the reinforcing layer includes a polyester reinforcing layer or a polyvinyl alcohol reinforcing layer.

[0070] The application also provides a connecting pipe assembly, which includes a working medium pipe connecting structure. The specific structure of the working medium pipe connecting structure refers to the above-mentioned embodiments. Since the connecting pipe assembly adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the working medium pipe assembly includes the above-mentioned working medium pipe connecting structure, and the working medium pipe assembly is used to connect an air conditioner outdoor unit and an air conditioner indoor unit.

[0071] Further, in the embodiment, the connecting pipe assembly further comprises an electric wire, a water pipe and a cable tie bundling the working medium pipe assembly, the electric wire and the water pipe. The cable tie is used to connect the working medium pipe assembly, the electric wire and the water pipe together, and has the function of tidying the lines. Since the rubber pipe 200, the electric wire and the water pipe are all flexible, the connecting pipe assembly has good bending performance, is convenient to install according to the construction condition of the site, and further has good shock absorption function, which is beneficial to reduce noise.

[0072] The application further provides an automobile air conditioner, which comprises an air conditioner indoor unit, an air conditioner outdoor unit and a connecting pipe assembly. The connecting pipe assembly has the specific structure as described in the above embodiments. Since the connecting pipe assembly adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described herein. The air conditioner indoor unit is arranged in a vehicle body. The air conditioner outdoor unit is arranged on the outer surface of the vehicle body. The connecting pipe assembly is arranged through the vehicle body to connect the air conditioner indoor unit and the air conditioner outdoor unit.

[0073] Further, the automobile air conditioner further comprises a working medium, and the working medium pipe assembly is used to transport the working medium. The working pressure of the working medium is less than or equal to 5 MPa. More specifically, the refrigerant is R134a type refrigerant, which has the characteristic of low pressure. Of course, the refrigerant in the embodiment can also be R410A type refrigerant, R22 type refrigerant, etc. It should be noted that the working pressure of the R410A type refrigerant is relatively high. The working pressure of the mainstream refrigerant on the market is 3.5 MPa or less. However, the high-pressure refrigerant with a working pressure of 3.5 MPa is difficult to be applied to the existing working medium pipe assembly with a rubber pipe 200. The reason is that the high-pressure refrigerant has high requirements on the sealing performance of the rubber pipe 200 connected to the working medium pipe. The fastening sleeve 300 needs to apply a large clamping pressure to the rubber pipe 200 to ensure the sealing performance of the connection between the rubber pipe 200 and the working medium pipe joint 100. Therefore, the working medium pipe joint 100 needs to have sufficient mechanical strength to prevent deformation under external pressure. The embodiment uses the support pipe 140 to strengthen the strength of the working medium pipe joint 100, so that the fastening sleeve 300 can clamp the rubber pipe 200 with a large pressure, thereby ensuring the sealing effect of the connection between the rubber pipe 200 and the working medium pipe joint 100. The working medium pipe joint 100 can be applied to the high-pressure range of refrigerant.

[0074] Specifically, the R22 refrigerant mainly includes CHClF2, the R410A refrigerant mainly includes difluoromethane and pentafluoroethane, the R32 refrigerant mainly includes CH2F2, and the R134a refrigerant mainly includes CH2FCF3. The components of the above refrigerants all include small organic molecules, and the small organic molecules are easy to enter the organic material. Therefore, the hose 200 of the present application adopts a multi-layer structure, so that the hose 200 not only has good flexibility and shock absorption performance, but also has better sealing performance, which is beneficial to reduce or avoid the escape of small molecule refrigerants. In addition, the working pressure of the R134a refrigerant is small, and it is not easy to escape through the hose 200. Therefore, the hose 200 of the present embodiment is used for the R134a refrigerant. Due to the characteristics of the hose 200 itself, it is difficult to avoid the contamination mixed into the working medium. Through the filter screen provided in the present embodiment, the cleanliness of the refrigerant can be effectively controlled.

[0075] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or direct / indirect application in other related technical fields within the concept of the present application, and the contents of the present application are included in the patent protection scope of the present application.

Claims

1. A working fluid pipe connection structure, characterized in that, include: A working fluid pipe connector includes: a pipe body portion, the outer surface of which is provided with a connecting structure for connecting a hose; and a support pipe disposed within the pipe body portion, the outer surface of which contacts the inner surface of the pipe body portion; the pipe body portion includes a connecting portion and an extension portion, the connecting structure being located on the outer surface of the connecting portion, the connecting structure including any one or more of a boss and a barb, the support pipe being disposed within the connecting portion, the extension portion being connected to one end of the connecting portion, and the inner diameter of the connecting portion being larger than the inner diameter of the extension portion; The inner diameter of the support tube is 0.8 to 1.3 times the inner diameter of the extension; A hose, a connecting structure for sleeved with the working fluid tube connector, the working fluid tube connector and the hose are connected to form a working fluid tube assembly, the hose of the working fluid tube assembly is used to transport the working fluid; The working fluid pipe joint also includes one or more of the following: a silencer, a mixer, and a throttle, which are disposed in the support pipe. A fastening sleeve is fitted over at least a portion of the hose, and the fastening sleeve presses the hose to ensure a tight fit between the hose and the working fluid connector.

2. The working fluid pipe connection structure as described in claim 1, characterized in that, The tensile strength of the support tube is greater than the tensile strength of the tube body.

3. The working fluid pipe connection structure as described in claim 2, characterized in that, The support tube is a steel pipe, and the tube body is a copper tube body.

4. The working fluid pipe connection structure as described in claim 1, characterized in that, The sound-absorbing component includes a sheet-like, cylindrical, or conical sound-absorbing layer; The mixer comprises a sheet-like, cylindrical, or conical mixing layer.

5. The working fluid pipe connection structure as described in claim 4, characterized in that, The noise-absorbing component includes multiple noise-absorbing layers; The mixer includes multiple mixing layers.

6. The working fluid pipe connection structure as described in claim 5, characterized in that, The silencer, the mixer, or the throttle is welded to the pipe body; or... The silencer, the mixer, or the throttle is snap-fitted to the pipe body; or... The outer surface of the muffler, the mixer, or the throttle is provided with a convex ring, and the inner surface of the tube body is provided with two positioning protrusions. The two positioning protrusions are located on both sides of the convex ring, and the positioning protrusions abut against the convex ring. The protrusions include convex bulges or convex ridges.

7. The working fluid pipe connection structure as described in claim 1, characterized in that, The working fluid pipe fitting also includes a filter element disposed within the pipe body.

8. The working fluid pipe connection structure as described in claim 7, characterized in that, The filter element has a mesh size of 80 or greater.

9. The working fluid pipe connection structure as described in claim 7, characterized in that, The mesh size of the filter element is 80 to 200 mesh.

10. A connecting pipe assembly, characterized in that, The invention includes a working fluid pipe assembly, which includes a working fluid pipe connection structure as described in any one of claims 1 to 9, and the working fluid pipe assembly is used to connect an outdoor unit of an air conditioner and an indoor unit of an air conditioner.

11. A connecting pipe assembly as claimed in claim 10, characterized in that, The connecting pipe assembly also includes: an electrical wire, a water pipe, and cable ties for binding the working fluid pipe assembly, the electrical wire, and the water pipe.

12. An automotive air conditioner, characterized in that, include: Air conditioner indoor unit, used for installation inside the vehicle body; An outdoor air conditioning unit, for installation on the exterior surface of the vehicle body; as well as, A working fluid pipe assembly, the working fluid pipe assembly being used to pass through the vehicle body to connect the indoor unit of the air conditioner and the outdoor unit of the air conditioner, the working fluid pipe assembly including the working fluid pipe connection structure as described in claim 11.

13. The automotive air conditioner as described in claim 12, characterized in that, The automotive air conditioner also includes a working fluid, and the working fluid pipe assembly is used to transport the working fluid, wherein the working pressure of the working fluid is less than or equal to 5 MPa.

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