Easily-installed evaporator connecting pipe assembly

Abstract

The utility model discloses an evaporator connecting pipe assembly easy to install, which comprises two pipe joint structures and a flexible pipe installed between the two pipe joint structures, a fixing piece is installed on the flexible pipe in a sliding mode, the flexible pipe is fixed with an engine compartment through the fixing piece, one pipe joint structure is connected with an expansion valve, and the other pipe joint structure is connected with the expansion valve. The other pipe joint structure is connected with the compressor; the device adopts a combination form of the pipe joint structure and the hose, the hose can adapt to the layout of an engine compartment, the hose is fixed by finding a proper position in the engine compartment through the fixing piece, direct contact between the hose and a high-temperature heating automobile part is avoided, and the pipe joint structure can rotate to adjust the mounting position; and interference with other parts in an engine compartment is avoided, so that installation is more convenient, greater convenience is brought to assembly work, and the universality of the pipe assembly is also improved.

Description

Technical Field

[0001] This utility model relates to an evaporator connecting pipe assembly that is easy to install. Background Technology

[0002] In automotive air conditioning systems, the connecting pipe assembly between the evaporator and compressor is a key component for refrigerant circulation, and its installation reliability and sealing directly affect the operating efficiency of the air conditioning system. Traditional evaporator connecting pipe assemblies typically use a fixed, rigid pipe connection method. Due to the complex layout of the engine compartment and the differences between different vehicle models, this rigid connection method is often difficult to adapt to diverse installation environments, leading to installation difficulties and pipe interference.

[0003] Based on the above issues, we designed an easy-to-install evaporator connecting pipe assembly that can meet the needs of flexible installation, adapt to bending and angle adjustments, and facilitate connection between the evaporator and compressor. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an evaporator connecting pipe assembly that can meet the needs of flexible installation, can be adapted to bending and angle adjustment, and is easy to install for connecting the evaporator and compressor.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] An easy-to-install evaporator connection pipe assembly includes two pipe joint structures and a hose installed between the two pipe joint structures. A fixing member is slidably mounted on the hose and fixed to the engine compartment by the fixing member. One pipe joint structure is connected to an expansion valve, and the other pipe joint structure is connected to a compressor.

[0007] Preferably, the pipe joint structure includes a pressure plate, an embedded tube is machined at the lower end of the pressure plate, a connecting tube is machined at the upper end of the pressure plate, the connecting tube communicates with the embedded tube, a connecting hole is drilled on the surface of the pressure plate, a threaded connection is machined at the end of the connecting tube away from the pressure plate, an annular groove is machined on the outer wall of the connecting tube, a through groove for refrigerant flow is passed through the bottom of the annular groove, a rotary tube is fitted on the connecting tube, the rotary tube rotates coaxially along the connecting tube, a pressure cap is installed through the threaded connection, the pressure cap is screwed down and presses the rotary tube, the rotary tube covers the annular groove, a bend is welded to the outer wall of the rotary tube, and the flexible hose is connected through the bend.

[0008] Preferably, two annular grooves, one upper and one lower, are machined on the outer wall of the connecting pipe. The two annular grooves are located on the upper and lower sides of the annular groove, respectively. A sealing ring is installed in the annular groove. When the rotary pipe and the connecting pipe are fitted together, the sealing ring and the inner wall of the rotary pipe are interference-fitted to form a seal.

[0009] Preferably, two sealing gaskets are fitted on the connecting pipe, and the two sealing gaskets are respectively located at the upper and lower end faces of the rotating pipe. One sealing gasket is clamped by the pressure plate and the rotating pipe, and the other sealing gasket is clamped by the pressure cap and the rotating pipe.

[0010] Preferably, the sealing gasket has a conical insert portion, which is elastically deformed and then embedded into the rotary tube.

[0011] Preferably, the end of the bend is machined to form multiple sealing conical surfaces, the diameter of the multiple sealing conical surfaces gradually decreases towards the hose, the large end diameter of the sealing conical surface is larger than the inner diameter of the hose, the small end diameter of the sealing conical surface is not larger than the inner diameter of the hose, and the sealing conical surface is inserted into the hose.

[0012] Preferably, a threaded portion is welded onto the bend, and clamping portions are injection molded at both ends of the hose. A clamping sleeve is fitted onto the hose, and the clamping sleeve is transitionally fitted with the hose. A nut is machined at the end of the clamping sleeve, and the clamping portions are confined within the nut. When the hose is inserted into the bend, the nut is threadedly connected to the threaded portion.

[0013] Preferably, the fastener is a rigid tube, and an ear plate is welded to the outer wall of the fastener, the ear plate having a connection hole.

[0014] The beneficial effects of this utility model are:

[0015] This device adopts a combination of pipe joint structure and hose. The hose can adapt to the layout of the engine compartment and is fixed in a suitable position in the engine compartment by fasteners, avoiding direct contact between the hose and high-temperature automotive parts. The pipe joint structure can be rotated to adjust the installation position, avoiding interference with other parts in the engine compartment, thus making installation easier and bringing greater convenience to the assembly work. It also increases the versatility of the pipe assembly and is suitable for widespread use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded view of the pipe fitting structure.

[0019] Figure 3 Here is a structural diagram of the pressure plate;

[0020] Figure 4 This is a schematic diagram of the forward rotation of the rotary tube;

[0021] Figure 5 This is a schematic diagram of the rotary tube installed in reverse. Detailed Implementation

[0022] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0023] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0024] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, they should not be construed as limitations on this utility model.

[0025] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] See Figure 1 The evaporator connection pipe assembly shown includes two pipe joint structures 1 and a hose 2 installed between the two pipe joint structures 1. A fixing member 3 is slidably installed on the hose 2 and fixed to the engine compartment by the fixing member 3. One of the pipe joint structures 1 is connected to an expansion valve and the other pipe joint structure 1 is connected to a compressor.

[0028] In the above technical solution, the installation position of the hose 2 can be adjusted according to the layout of the engine compartment, and the number and installation position of the fasteners 3 can also be adjusted. It can be flexibly adjusted according to the engine compartment to facilitate the docking between the expansion valve of the evaporator and the compressor.

[0029] The above technical solution adopts a universally designed pipe joint structure 1, which can easily adjust the installation angle and flexibly adjust it according to the space of the engine.

[0030] See Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the pipe joint structure 1 includes a pressure plate 11. An embedded tube 12 is formed by cutting and machining at the lower end of the pressure plate 11, and a connecting tube 13 is formed by cutting and machining at the upper end of the pressure plate 11. The connecting tube 13 communicates with the embedded tube 12. A connecting hole 14 is drilled on the surface of the pressure plate 11. A threaded connection part 15 is formed at the end of the connecting tube 13 away from the pressure plate 11. An annular groove 16 is machined on the outer wall of the connecting tube 13. A through groove 17 for circulating refrigerant passes through the bottom of the annular groove 16. A rotary tube 18 is fitted on the connecting tube 13. The rotary tube 18 rotates coaxially along the connecting tube 13. A pressure cap 19 is installed through the threaded connection part 15. After the pressure cap 19 is screwed down, it presses the rotary tube 18. The rotary tube 18 covers the annular groove 16. A bend 110 is welded to the outer wall of the rotary tube 18. The bend 110 is connected to the hose 2.

[0031] In the above technical solution, the installation angle of the rotary tube 18 is rotatable, and the position of the bend tube 110 can be adjusted according to the layout of the engine compartment to avoid unreasonable installation areas.

[0032] Meanwhile, the swivel pipe 18 can be installed either forwards or backwards, allowing the end of the bend 110 to face upwards or downwards, thus offering greater flexibility and facilitating more adaptable installation.

[0033] See Figure 2 As shown, two annular grooves 131 are machined on the outer wall of the connecting pipe 13. The two annular grooves 131 are located on the upper and lower sides of the annular groove 16, respectively. A sealing ring 132 is installed in the annular groove 131. When the rotating pipe 18 is fitted with the connecting pipe 13, the sealing ring 132 forms a seal after interference fit with the inner wall of the rotating pipe 18.

[0034] The above technical solution is to increase the sealing between the rotary pipe 18 and the connecting pipe 13.

[0035] See Figure 2 As shown, two sealing gaskets 133 are fitted on the connecting pipe 13. The two sealing gaskets 133 are located at the upper and lower end faces of the rotating pipe 18, respectively. One sealing gasket 133 is clamped by the pressure plate 11 and the rotating pipe 18, and the other sealing gasket 133 is clamped by the pressure cap 19 and the rotating pipe 18.

[0036] The sealing gasket 133 has a tapered insert 134, which is embedded in the rotary tube 18 after elastic deformation.

[0037] In the above technical solution, the use of sealing gasket 133 can further increase the sealing performance at the position of rotary tube 18.

[0038] Furthermore, the sealing gasket 133 also has an insert 134, which can be inserted into the gap between the rotary tube 18 and the connecting tube 13 for further sealing.

[0039] See Figure 2 As shown, the end of the bend 110 is machined to form a plurality of sealing cone surfaces 121. The diameter of the plurality of sealing cone surfaces 121 gradually decreases towards the hose 2. The large end diameter of the sealing cone surface 121 is larger than the inner diameter of the hose 2, and the small end diameter of the sealing cone surface 121 is not larger than the inner diameter of the hose 2. The sealing cone surface 121 is inserted into the hose 2.

[0040] The design of the sealed conical surface 121 facilitates the guided insertion of the bend 110 into the hose 2.

[0041] Furthermore, after insertion, the sealing cone 121 forms multiple sealing contact surfaces with the hose 2 through an interference fit, thereby increasing the sealing performance.

[0042] See Figure 2 As shown, a threaded portion 111 is welded onto the bend 110, and clamping portions 21 are injection molded at both ends of the hose 2. A clamping sleeve 22 is fitted onto the hose 2, and the clamping sleeve 22 is transitionally fitted to the hose 2. A nut 23 is machined at the end of the clamping sleeve 22, and the clamping portion 21 is confined within the nut 23. When the hose 2 is inserted into the bend 110, the nut 23 is threadedly connected to the threaded portion 111.

[0043] In the above technical solution, the clamping sleeve 22 can restrict the outward expansion of the hose 2. When the hose 2 and the bend 110 are inserted, the inner diameter of the hose 2 is expanded, while the outside of the hose 2 is limited by the clamping sleeve 22, which increases the tightness at the sealing cone surface 121 and further avoids refrigerant leakage.

[0044] At the same time, nut 23 is used to lock the position to prevent hose 2 from loosening.

[0045] See Figure 1 As shown, the fixing member 3 is a rigid tube, and an ear plate 31 is welded to the outer wall of the fixing member 3. The ear plate 31 has a connecting hole 32.

[0046] The position of the fixing part 3 can be adjusted by sliding along the hose 2, or it can be rotated along the hose 2, making it convenient to select a suitable installation point for the ear plate 31.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0049] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An easy-to-install evaporator connecting pipe assembly, characterized in that: It includes two pipe joint structures (1) and a hose (2) installed between the two pipe joint structures (1). A fixing member (3) is slidably installed on the hose (2) and fixed to the engine compartment by the fixing member (3). One of the pipe joint structures (1) is connected to an expansion valve and the other pipe joint structure (1) is connected to a compressor.

2. The easy-to-install evaporator connecting pipe assembly according to claim 1, characterized in that: The pipe joint structure (1) includes a pressure plate (11), an embedded tube (12) is formed by cutting at the lower end of the pressure plate (11), and a connecting tube (13) is formed by cutting at the upper end of the pressure plate (11). The connecting tube (13) communicates with the embedded tube (12). A connecting hole (14) is drilled on the surface of the pressure plate (11). A threaded connection part (15) is formed at the end of the connecting tube (13) away from the pressure plate (11). An annular groove (16) is machined on the outer wall of the connecting tube (13). The bottom of the groove (16) is perforated by a channel (17) for the flow of refrigerant. A rotary tube (18) is fitted on the connecting pipe (13). The rotary tube (18) rotates coaxially along the connecting pipe (13). A pressure cap (19) is installed through the threaded connection (15). The pressure cap (19) is screwed down and presses the rotary tube (18). The rotary tube (18) covers the annular groove (16). A bend (110) is welded to the outer wall of the rotary tube (18). The bend (110) is connected to the hose (2).

3. The easy-to-install evaporator connecting pipe assembly according to claim 2, characterized in that: Two annular grooves (131) are machined on the outer wall of the connecting pipe (13). The two annular grooves (131) are located on the upper and lower sides of the annular groove (16), respectively. A sealing ring (132) is installed in the annular groove (131). When the rotating pipe (18) is fitted with the connecting pipe (13), the sealing ring (132) forms a seal after interference fit with the inner wall of the rotating pipe (18).

4. The easy-to-install evaporator connecting pipe assembly according to claim 3, characterized in that: Two sealing gaskets (133) are fitted on the connecting pipe (13). The two sealing gaskets (133) are located at the upper and lower end faces of the rotating pipe (18), respectively. One sealing gasket (133) is clamped by the pressure plate (11) and the rotating pipe (18), and the other sealing gasket (133) is clamped by the pressure cap (19) and the rotating pipe (18).

5. The easy-to-install evaporator connecting pipe assembly according to claim 4, characterized in that: The sealing gasket (133) has a conical insert (134) that is embedded in the rotary tube (18) after elastic deformation.

6. The easy-to-install evaporator connecting pipe assembly according to claim 2, characterized in that: The end of the bend (110) is machined to form multiple sealing cones (121). The diameter of the multiple sealing cones (121) gradually decreases towards the hose (2). The large end diameter of the sealing cone (121) is larger than the inner diameter of the hose (2), and the small end diameter of the sealing cone (121) is not larger than the inner diameter of the hose (2). The sealing cone (121) is inserted into the hose (2).

7. The easily installable evaporator connecting pipe assembly according to claim 6, characterized in that: A threaded portion (111) is welded onto the bend (110). Clamping portions (21) are injection molded at both ends of the hose (2). A clamping sleeve (22) is fitted onto the hose (2). The clamping sleeve (22) is transitionally fitted to the hose (2). A nut (23) is machined at the end of the clamping sleeve (22). The clamping portion (21) is confined within the nut (23). When the hose (2) is inserted into the bend (110), the nut (23) is threadedly connected to the threaded portion (111).

8. The easily installable evaporator connecting pipe assembly according to claim 1, characterized in that: The fastener (3) is a rigid tube, and an ear plate (31) is welded to the outer wall of the fastener (3). The ear plate (31) has a connection hole (32).

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