A quick connection pipe for indoor and outdoor units of air conditioner

Abstract

The present invention belongs to the technical field of air-conditioning accessories, and specifically is a quick-connect pipe for indoor and outdoor units of an air-conditioning, including a copper tube assembly, the outer surface of the copper tube assembly is sleeved with a protective assembly, both ends of the copper tube assembly are fixedly connected with sealing assemblies, both ends of the inner wall of the copper tube assembly are fixedly connected with limiting assemblies, the top end of the limiting assembly is sleeved with a pushing assembly, and one end of the pushing assembly is fixedly connected with a first connecting assembly; through the provided sealing assembly, the inner insert tube is preferentially inserted into the interior of the threaded head, and the second sealing ring is tightly fitted with the inner wall of the threaded head, which is convenient for ensuring the sealing performance of the connection between the two, and at the same time, it is convenient to align the trumpet head with the end of the threaded head to avoid misalignment of the two during connection, which makes it difficult for the second connecting assembly to rotate to the outer surface of the threaded head, which is beneficial to improving the connection speed, and the first sealing ring further ensures the sealing of the connection, and improves the sealing effect of the connection.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioner accessories, in particular to a quick connection pipe for indoor and outdoor units of an air conditioner. Background Art

[0002] The quick-connect pipe for indoor and outdoor units of an air conditioner is a piping system used to connect the indoor unit and outdoor unit of the air conditioner. Its main function is to transport refrigerant so that the air conditioning system can work normally. The quick-connect pipe for indoor and outdoor units of an air conditioner in the prior art includes a copper pipe and two nuts respectively connected to the indoor and outdoor units of the air conditioner. The two nuts are respectively arranged at both ends of the copper pipe. Then, during installation, the nuts are rotated to fix the pipe. At the same time, during the installation process, the air inside the copper pipe needs to be discharged before installation can be carried out. The existing operation is usually performed using a vacuum pump, which is very inconvenient.

[0003] A Chinese invention patent publication number CN103629465B discloses a quick-connect pipe for indoor and outdoor units of an air conditioner. The key points of its technical solution are: it includes a connecting pipe and two connecting heads respectively connected to the indoor and outdoor units of the air conditioner, each connecting head is composed of a quick female connector connected to the connecting pipe and a quick male connector connected to the indoor or outdoor unit of the air conditioner; the quick female connector is provided with a sealing locking device, and the quick male connector is provided with an opening device for opening the sealing locking device.

[0004] The two connectors of the quick connection pipe of the indoor and outdoor units of the air conditioner of the above invention are both connected by a quick female connector connected to the connection pipe and a quick male connector connected to the indoor or outdoor unit of the air conditioner; the quick female connector is provided with a sealing locking device, and the quick male connector is provided with an opening device for opening the sealing locking device. When in use, first connect the two quick male connectors to the indoor and outdoor units of the air conditioner respectively, and then quickly connect the quick male connector to the quick female connector. In this way, the quick connection pipe of the indoor and outdoor units of the air conditioner can be directly connected to the indoor and outdoor units of the air conditioner without exhaust, thereby reducing the difficulty of operation for the operator to a certain extent, and also reducing the installation cost of the air conditioner.

[0005] However, the above technology often has the following defects: during the connection process, it is first necessary to align the connector of the connecting pipe with the connectors of the inner and outer units of the air conditioner so that they can be connected using nuts later. However, during the alignment process, displacement is inevitable, which makes it difficult for the nut to rotate smoothly, affecting the connection rate and making it difficult to ensure the sealing of the connection.

[0006] To this end, the present invention provides a quick connection pipe for indoor and outdoor units of an air conditioner. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is: the quick connection pipe of the indoor and outdoor units of the air conditioner described in the present invention comprises a copper tube assembly, the outer surface of the copper tube assembly is sleeved with a protective assembly, both ends of the copper tube assembly are fixedly connected with a sealing assembly, both ends of the inner wall of the copper tube assembly are fixedly connected with a limiting assembly, the top end of the limiting assembly is sleeved with a pushing assembly, one end of the pushing assembly is fixedly connected with a first connecting assembly, the outer surface of the first connecting assembly is fixedly connected with a fixing assembly, the outer surface of the first connecting assembly is threadedly connected with a second connecting assembly, and the outer surface of the second connecting assembly is fixedly connected with a clamping assembly matching the fixing assembly;

[0009] The sealing assembly includes a welding neck, one end of which is fixedly connected to the end of the copper tube assembly, the other end of which is fixedly connected to a horn head, the end of which is fixedly connected to a first sealing ring, the inner wall of the welding neck is fixedly connected to an inner tube, and one end of the outer surface of the inner tube is fixedly connected to a second sealing ring;

[0010] The limit assembly includes a first fixing rod, one end of which is fixedly connected to one end of the inner wall of the copper tube, the other end of which is fixedly connected to a first connecting piece, a first spring is fixedly connected to the middle of the upper surface of the first connecting piece, a telescopic sleeve is fixedly connected to the upper surface of the first connecting piece at the periphery of the first spring, one end of the telescopic sleeve is fixedly connected to a sealing plug, a positioning rod is fixedly connected to the upper surface of the sealing plug, and a sealing ring is slidably connected to the outer surface of the sealing plug;

[0011] The push assembly includes a push rod, the bottom end of which is sleeved on the outer surface of the positioning rod, the top end of which is fixedly connected to a second connecting piece, and the outer surface of which is fixedly connected to a second fixing rod;

[0012] The first connecting assembly includes a first rotating head, the inner wall of the first rotating head is fixedly connected to one end of the second fixed rod, the upper surface of the first rotating head is fixedly connected to a first connecting ring, the interior of the first connecting ring is fixedly connected to a connecting pipe, the outer surface of the first rotating head is fixedly connected to a first rotating rod, and the bottom end of the first rotating head is fixedly connected to a threaded head;

[0013] The second connecting assembly includes a second rotating head, the internal thread of the second rotating head is connected to the outer surface of the threaded head, the outer surface of the second rotating head is fixedly connected to a second rotating rod, and the lower surface of the second rotating head is fixedly connected to a second connecting ring.

[0014] The copper tube assembly includes a copper tube, the end of which is fixedly connected to one end of a welding neck, an anti-corrosion layer is provided inside the copper tube, a support frame is fixedly connected to the inner wall of the anti-corrosion layer, and the number of the support frames is several and the support frames are arranged in an interval manner.

[0015] The protective component comprises a sound insulation layer, the interior of the sound insulation layer is sleeved on the middle part of the outer surface of the copper tube, the outer surface of the sound insulation layer is fixedly connected with an insulating layer, and the outer surface of the insulating layer is fixedly connected with a wear-resistant layer.

[0016] The fixing assembly comprises a fixing block, one side of which is fixedly connected to the outer surface of the first connecting ring, one side of which is fixedly connected to a fixing belt, and one end of which is fixedly connected to a buckle.

[0017] The clamping assembly includes a clamping ring, one side of which is fixedly connected to the outer surface of the second connecting ring, the other side of which is provided with a clamping groove, the inner side wall of the clamping groove is fixedly connected to a second spring, and one end of the second spring is fixedly connected to a clamping block.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The quick connection pipe for indoor and outdoor units of an air conditioner described in the present invention has a sealing component that is set up, so that the inner tube is preferentially inserted into the interior of the threaded head, and the second sealing ring is tightly fitted with the inner wall of the threaded head, so as to ensure the sealing performance of the connection between the two. At the same time, it is convenient to align the trumpet head with the end of the threaded head to avoid misalignment of the two during connection, which makes it difficult for the second connection component to rotate to the outer surface of the threaded head, which is beneficial to improving the connection speed, and the first sealing ring further ensures the sealing of the connection and improves the sealing effect of the connection.

[0020] 2. The quick connection pipe of the indoor and outdoor units of an air conditioner described in the present invention has a limit assembly and a push assembly. During the connection process, the push rod is sleeved onto the outer surface of the positioning rod to push the sealing plug. The first spring contracts and the telescopic sleeve simultaneously expands and contracts to separate the sealing plug from the sealing ring, forming a through space. There is no need to exhaust the air again, which reduces the operating procedures, reduces the operating difficulty and installation cost, and improves the installation efficiency.

[0021] 3. The quick-connect pipe of the indoor and outdoor units of an air conditioner described in the present invention has a fixing component and a clamping component. After the first connecting component and the second connecting component are connected, the buckle is inserted into the inside of the clamping slot, and the second spring pushes the clamping block to fix the buckle, thereby connecting the buckle to the clamping ring, and then connecting the first connecting component and the second connecting component through a fixing belt to reinforce them and prevent them from detaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 is a stereogram of the present invention;

[0024] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the split structure of the first connection component and the second connection component in the present invention;

[0026] Figure 4 is a schematic structural diagram of the first connection component in the present invention;

[0027] Figure 5 is a schematic structural diagram of the second connection component in the present invention;

[0028] Figure 6 It is a structural schematic diagram of the sealing component in the present invention;

[0029] Figure 7 It is a structural schematic diagram of the limit assembly in the present invention;

[0030] Figure 8 It is a structural schematic diagram of the fixing component in the present invention.

[0031] In the figure: 1. welding neck; 2. trumpet head; 3. first sealing ring; 4. inner insert; 5. second sealing ring; 6. copper tube; 7. anti-corrosion layer; 8. support frame; 9. sound insulation layer; 10. insulation layer; 11. wear-resistant layer; 12. first fixing rod; 13. first connecting piece; 14. first spring; 15. telescopic sleeve; 16. sealing plug; 17. positioning rod; 18. sealing ring; 19. push rod; 20. second connecting piece; 21. second fixing rod; 22. first rotating head; 23. first connecting ring; 24. connecting pipe; 25. first rotating rod; 26. threaded head; 27. second rotating head; 28. second rotating rod; 29. ​​second connecting ring; 30. fixing block; 31. fixing belt; 32. buckle; 33. snap ring; 34. second spring; 35. clamping block. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] Embodiment 1: Figures 1 to 8As shown, an air conditioner indoor and outdoor unit quick connection pipe according to an embodiment of the present invention comprises a copper tube assembly, a protective assembly is sleeved on the outer surface of the copper tube assembly, both ends of the copper tube assembly are fixedly connected with sealing assemblies, both ends of the inner wall of the copper tube assembly are fixedly connected with limit assemblies, the top end of the limit assemblies is sleeved with a push assembly, one end of the push assembly is fixedly connected with a first connection assembly, the outer surface of the first connection assembly is fixedly connected with a fixing assembly, the outer surface of the first connection assembly is threadedly connected with a second connection assembly, and the outer surface of the second connection assembly is fixedly connected with a clamping assembly matching the fixing assembly;

[0034] The sealing component includes a welding neck 1, one end of which is fixedly connected to the end of the copper tube component, and the other end of the welding neck 1 is fixedly connected to a bugle head 2, and the end of the bugle head 2 is fixedly connected to a first sealing ring 3, and the inner wall of the welding neck 1 is fixedly connected to an inner insert tube 4, and one end of the outer surface of the inner insert tube 4 is fixedly connected to a second sealing ring 5, and the inner insert tube 4 is preferentially inserted into the inside of the threaded head 26, and the second sealing ring 5 is tightly fitted with the inner wall of the threaded head 26, so as to ensure the sealing performance of the connection between the two. At the same time, it is convenient to align the ends of the bugle head 2 and the threaded head 26 to avoid misalignment between the two during connection, which makes it difficult for the second connection component to rotate to the outer surface of the threaded head 26, which is conducive to improving the connection rate, and the first sealing ring 3 further ensures the sealing of the connection and improves the sealing effect of the connection;

[0035] The limiting assembly includes a first fixing rod 12, one end of the first fixing rod 12 is fixedly connected to one end of the inner wall of the copper tube 6, the other end of the first fixing rod 12 is fixedly connected to a first connecting piece 13, the middle of the upper surface of the first connecting piece 13 is fixedly connected to a first spring 14, the upper surface of the first connecting piece 13 is located at the periphery of the first spring 14 and is fixedly connected to a telescopic sleeve 15, one end of the telescopic sleeve 15 is fixedly connected to a sealing plug 16, the upper surface of the sealing plug 16 is fixedly connected to a positioning rod 17, and the outer surface of the sealing plug 16 is slidably connected to a sealing ring 1 8. The first fixing rod 12 fixes the first connecting piece 13 at a suitable position inside the copper tube 6, so as to support the bottom end of the first spring 14. The push rod 19 is sleeved on the outer surface of the positioning rod 17 to push the sealing plug 16. The first spring 14 contracts, and the telescopic sleeve 15 is synchronously extended and extended to protect the first spring 14 without affecting its telescopic effect, so that the sealing plug 16 is separated from the sealing ring 18 to form a through space, and there is no need to exhaust it again, which reduces the operation procedures, reduces the operation difficulty and installation cost, and improves the installation efficiency;

[0036] The push assembly includes a push rod 19, the bottom end of which is sleeved on the outer surface of the positioning rod 17, the top end of the push rod 19 is fixedly connected with a second connecting piece 20, the outer surface of the second connecting piece 20 is fixedly connected with a second fixing rod 21, and the second fixing rod 21 connects the second connecting piece 20 with the first connecting assembly, thereby fixing the position of the push rod 19, and facilitating pushing to the center position of the sealing plug 16;

[0037] The first connecting assembly includes a first rotating head 22, the inner wall of the first rotating head 22 is fixedly connected to one end of the second fixed rod 21, the upper surface of the first rotating head 22 is fixedly connected to a first connecting ring 23, the interior of the first connecting ring 23 is fixedly connected to a connecting pipe 24, the outer surface of the first rotating head 22 is fixedly connected to a first rotating rod 25, and the bottom end of the first rotating head 22 is fixedly connected to a threaded head 26, the first rotating head 22 is limited by the first rotating rod 25, and reverse force is applied to it and the second rotating head 27, so as to facilitate the connection between the two;

[0038] The second connecting component includes a second rotating head 27, the internal thread of the second rotating head 27 is connected to the outer surface of the threaded head 26, the outer surface of the second rotating head 27 is fixedly connected to a second rotating rod 28, the lower surface of the second rotating head 27 is fixedly connected to a second connecting ring 29, and the second connecting component is slidably connected to one end of the outer surface of the copper tube 6. After aligning the horn head 2 with the end of the threaded head 26, the second rotating head 27 is slid toward the end of the copper tube 6, and then the second rotating head 27 is driven to rotate by the second rotating rod 28, and its thread is rotated to the outer surface of the threaded head 26 for connection. No additional tools are required, which can avoid accidental falling of tools during high-altitude operations and causing injuries to pedestrians below.

[0039] Embodiment 2: Figures 1 to 8 As shown in Comparative Example 1, another embodiment of the present invention is:

[0040] The copper tube assembly includes a copper tube 6, the end of which is fixedly connected to one end of the welding neck 1. An anti-corrosion layer 7 is provided inside the copper tube 6, and a support frame 8 is fixedly connected to the inner wall of the anti-corrosion layer 7. There are several support frames 8, and the support frames 8 are arranged in an intermittent manner. The anti-corrosion layer 7 prevents the coolant inside the copper tube 6 from corroding the copper tube 6, causing sediment to form inside the copper tube 6, affecting the fluidity and cooling effect of the coolant. The support frames 8 are arranged in an intermittent manner, which is convenient for strengthening the hardness of the copper tube 6 and avoiding the copper tube 6 from being flattened during transportation, and will not affect the deformation performance of the copper tube 6.

[0041] The protective component includes a sound insulation layer 9, the interior of the sound insulation layer 9 is sleeved on the middle part of the outer surface of the copper tube 6, the outer surface of the sound insulation layer 9 is fixedly connected to an insulating layer 10, and the outer surface of the insulating layer 10 is fixedly connected to a wear-resistant layer 11. The sound insulation layer 9 is convenient for isolating the noise generated when the coolant flows, and the insulating layer 10 insulates the outer surface of the copper tube 6 to prevent condensation water from being generated on the outer surface of the copper tube 6 and affecting the storage environment of the copper tube 6. The wear-resistant layer 11 protects the insulating layer 10 to prevent the insulating layer 10 from breaking and losing its effectiveness.

[0042] The fixing assembly includes a fixing block 30, one side of which is fixedly connected to the outer surface of the first connecting ring 23, one side of the fixing block 30 is fixedly connected to a fixing belt 31, one end of the fixing belt 31 is fixedly connected to a buckle 32, and after the buckle 32 is connected to the buckle 33, the first connecting assembly and the second connecting assembly are connected by the fixing belt 31 to reinforce them and prevent them from detaching.

[0043] The snap-on assembly includes a snap ring 33, one side of which is fixedly connected to the outer surface of the second connecting ring 29, and the other side of the snap ring 33 is provided with a snap groove, the inner side wall of the snap groove is fixedly connected to a second spring 34, and one end of the second spring 34 is fixedly connected to a snap block 35. The snap buckle 32 is inserted into the inside of the snap groove, and the second spring 34 pushes the snap block 35 to fix the snap buckle 32, thereby connecting the snap buckle 32 to the snap ring 33.

[0044] Working principle: First, the inner tube 4 is preferentially inserted into the threaded head 26, the second sealing ring 5 is tightly fitted with the inner wall of the threaded head 26, and the trumpet head 2 is aligned with the end of the threaded head 26. Then, after the trumpet head 2 is aligned with the end of the threaded head 26, the second rotating head 27 is slid toward the end of the copper tube 6, and the first rotating rod 25 is used to limit the first rotating head 22, and the second rotating head 27 is reversely forced, and the second rotating head 27 is driven to rotate by the second rotating rod 28, and its thread is rotated to the outer surface of the threaded head 26 for connection. At the same time, the push rod 19 is sleeved on the outer surface of the positioning rod 17 to push the sealing plug 16, and the first spring 14 is contracted. The expansion sleeve 15 expands and contracts synchronously, so that the sealing plug 16 is separated from the sealing ring 18 to form a through space. Secondly, the buckle 32 is inserted into the slot, and the second spring 34 pushes the block 35 to fix the buckle 32, thereby connecting the buckle 32 with the clamping ring 33, and then connecting the first connecting component and the second connecting component through the fixing belt 31 to reinforce them. Finally, the anti-corrosion layer 7 prevents the coolant inside the copper tube 6 from corroding the copper tube 6, the sound insulation layer 9 is convenient for isolating the noise generated when the coolant flows, the insulation layer 10 insulates the outer surface of the copper tube 6 to prevent condensation water from forming on the outer surface of the copper tube 6, and the wear-resistant layer 11 protects the insulation layer 10.

[0045] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A quick connection pipe for indoor and outdoor units of an air conditioner, characterized in that: It comprises a copper tube assembly, the outer surface of which is sleeved with a protective assembly, both ends of which are fixedly connected with sealing assemblies, both ends of the inner wall of which are fixedly connected with limit assemblies, the top end of which is sleeved with a push assembly, one end of which is fixedly connected with a first connecting assembly, the outer surface of which is fixedly connected with a fixing assembly, the outer surface of which is threadedly connected with a second connecting assembly, and the outer surface of which is fixedly connected with a clamping assembly matching the fixing assembly; The sealing assembly comprises a welding neck (1), one end of the welding neck (1) is fixedly connected to the end of the copper tube assembly, the other end of the welding neck (1) is fixedly connected to a trumpet head (2), the end of the trumpet head (2) is fixedly connected to a first sealing ring (3), the inner wall of the welding neck (1) is fixedly connected to an inner tube (4), and one end of the outer surface of the inner tube (4) is fixedly connected to a second sealing ring (5); The limit assembly comprises a first fixing rod (12), one end of the first fixing rod (12) is fixedly connected to one end of the inner wall of the copper tube (6), the other end of the first fixing rod (12) is fixedly connected to a first connecting piece (13), the middle part of the upper surface of the first connecting piece (13) is fixedly connected to a first spring (14), the upper surface of the first connecting piece (13) is located at the periphery of the first spring (14) and is fixedly connected to a telescopic sleeve (15), one end of the telescopic sleeve (15) is fixedly connected to a sealing plug (16), the upper surface of the sealing plug (16) is fixedly connected to a positioning rod (17), and the outer surface of the sealing plug (16) is slidably connected to a sealing ring (18); The push assembly comprises a push rod (19), the bottom end of the push rod (19) is sleeved on the outer surface of the positioning rod (17), the top end of the push rod (19) is fixedly connected to a second connecting piece (20), and the outer surface of the second connecting piece (20) is fixedly connected to a second fixing rod (21); The first connecting assembly comprises a first rotating head (22), the inner wall of the first rotating head (22) being fixedly connected to one end of a second fixed rod (21), the upper surface of the first rotating head (22) being fixedly connected to a first connecting ring (23), the interior of the first connecting ring (23) being fixedly connected to a connecting pipe (24), the outer surface of the first rotating head (22) being fixedly connected to a first rotating rod (25), and the bottom end of the first rotating head (22) being fixedly connected to a threaded head (26); The second connecting assembly comprises a second rotating head (27), the internal thread of the second rotating head (27) being connected to the outer surface of the threaded head (26), the outer surface of the second rotating head (27) being fixedly connected to a second rotating rod (28), and the lower surface of the second rotating head (27) being fixedly connected to a second connecting ring (29).

2. The quick connection pipe for indoor and outdoor units of an air conditioner according to claim 1, characterized in that: The copper tube assembly comprises a copper tube (6), the end of the copper tube (6) being fixedly connected to one end of a welding neck (1), an anti-corrosion layer (7) being provided inside the copper tube (6), a support frame (8) being fixedly connected to the inner wall of the anti-corrosion layer (7), the number of the support frames (8) being several, and the support frames (8) being arranged in an intermittent manner.

3. The quick connection pipe for indoor and outdoor units of an air conditioner according to claim 1, characterized in that: The protective component comprises a sound insulation layer (9), the interior of the sound insulation layer (9) is sleeved on the middle part of the outer surface of the copper tube (6), the outer surface of the sound insulation layer (9) is fixedly connected to an insulating layer (10), and the outer surface of the insulating layer (10) is fixedly connected to a wear-resistant layer (11).

4. The quick-connect pipe for indoor and outdoor units of an air conditioner according to claim 1, characterized in that: The fixing assembly comprises a fixing block (30), one side of the fixing block (30) being fixedly connected to the outer surface of the first connecting ring (23), one side of the fixing block (30) being fixedly connected to a fixing belt (31), and one end of the fixing belt (31) being fixedly connected to a buckle (32).

5. The quick connection pipe for indoor and outdoor units of an air conditioner according to claim 1, characterized in that: The clamping assembly comprises a clamping ring (33), one side of the clamping ring (33) is fixedly connected to the outer surface of the second connecting ring (29), the other side of the clamping ring (33) is provided with a clamping groove, the inner side wall of the clamping groove is fixedly connected to a second spring (34), and one end of the second spring (34) is fixedly connected to a clamping block (35).

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