Non-welding composite connecting pipe for copper and aluminum ports of indoor unit and outdoor unit of split air conditioner
By using a non-fusion composite connecting pipe that combines aluminum pipe and copper pipe in the connection of the internal and external units of the air conditioner, the combined design of fixed components and heat shrink sleeves solves the problem of insufficient strength of aluminum pipes, and reduces the cost and improves the connection pipes Connection stability and sealing effect.
Patent Information
- Application Number
- CN202420857826.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The strength and ductility of aluminum pipes are worse than that of copper pipes, which makes it difficult to operate in the connection between the internal and external units of the air conditioner and is prone to cracks, and cannot completely replace the copper pipes, which increases the cost of the connecting pipes.
A non-welded composite connecting pipe combining aluminum tube and copper tube is adopted. The fixing components include a limit ring and a rotating ring. The heat-shrink sleeve is used to achieve a sealed and fixed connection between the copper tube and the aluminum tube, avoiding electrochemical reactions, and heating is used to make it The heat shrink sleeve is close to the outside of the limit ring and copper tube, enhancing connection stability and sealing.
It has achieved the reduction of the use of copper resources, reduced the cost of connecting pipes for air conditioners, and ensured the strength and sealing of the connection ports, and improved the stability and reliability of the connection between aluminum pipes and copper pipes.
Smart Images
Figure CN222209336U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of connecting copper-aluminum ports of indoor and outdoor units of air conditioners, and in particular relates to a non-fusion composite connecting pipe for copper-aluminum ports of indoor and outdoor units of a split air conditioner. Background Art
[0002] Copper tubes are commonly used to connect the indoor and outdoor units of split air conditioners. Copper tubes are easy to process and connect, which can save materials and total costs during installation. They have good stability and reliability and can save maintenance.
[0003] However, copper pipes are expensive and are currently high-end pipes, so it is more urgent to use aluminum to replace copper pipes. However, the strength and ductility of aluminum pipes are worse than those of copper pipes. When expanding and connecting aluminum pipes, cracks are prone to occur and the operation is more difficult. Therefore, the practicality of completely replacing copper pipes with aluminum is low.
[0004] Therefore, a non-fusion-joined composite connecting pipe with copper-aluminum ports of indoor and outdoor units of a split air conditioner is proposed. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a non-fusion-joined composite connecting pipe for copper-aluminum ports of indoor and outdoor units of a split air conditioner, which solves the above-mentioned problems.
[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a non-fusion composite connecting pipe for the copper-aluminum ports of the indoor and outdoor units of a split air conditioner, comprising an aluminum tube, a copper tube and a fixing assembly, wherein two copper tubes are provided, and the two copper tubes are respectively connected to the two ends of the aluminum tube through two groups of fixing assemblies, and the outer side and both side end surfaces of the aluminum tube are respectively fixedly connected with pipe sleeves, and one end of the two copper tubes is respectively sleeved on the outer side of the two ends of the aluminum tube, and the inner side of the copper tube is fitted with the outer side of the pipe sleeve.
[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:
[0008] Further technical solution: The fixing assembly includes a limiting ring and a rotating ring, one end of the limiting ring is fixedly sleeved on the outside of the aluminum tube, the inner diameter of the limiting ring is consistent with the outer diameter of the copper tube, the outer side of the limiting ring is provided with a thread, and the end of the limiting ring away from the aluminum tube is provided with a plurality of notches distributed in a circular array, the rotating ring is sleeved on the outside of the limiting ring and is threadedly connected to the limiting ring, and the end of the limiting ring with the notch is set to be outward-expanded.
[0009] Further technical solution: the limiting ring is made of hard PVC material, a sealing gasket is fixedly connected to the contact point between the inner side of the limiting ring and the copper tube, and the width of the rotating ring is greater than the width of the notch opened at one end of the limiting ring.
[0010] Further technical solution: a plurality of rectangular anti-slip grooves are provided in the middle of the outer side of the rotating ring.
[0011] Further technical solution: Both ends of the rotating ring are respectively fixedly connected with heat shrink sleeves, and the heat shrink sleeves are configured as glue-containing heat shrink tubes.
[0012] Further technical solution: the outer wall of one end of the limiting ring fixedly connected to the aluminum tube has a five to six millimeter gap without a thread groove. When the rotating ring is rotated to the end of the limiting ring groove, the end of the heat shrinkable sleeve of the rotating ring close to the aluminum tube is flush with the end of the limiting ring.
[0013] Beneficial Effects
[0014] The utility model provides a non-welded composite connecting pipe for the copper-aluminum ports of the internal and external units of a split air conditioner. Compared with the prior art, it has the following beneficial effects:
[0015] 1. Insert one end of the two copper tubes into the two limiting rings respectively, and sleeve them on the outside of the tube sleeve at the end of the aluminum tube to prevent the aluminum tube and the copper tube from being in direct contact for a long time and causing an electrochemical reaction. Then, cover the rotating ring thread sleeve on the outside of the limiting ring notch to tightly connect one end of the copper tube with one end of the aluminum tube. Then, evenly heat the two heat shrink sleeves so that the two heat shrink sleeves shrink and cling to the outside of the copper tube and the limiting ring respectively. Through two sets of fixing components, the two copper tubes are sealed and fixedly connected to the two ends of the aluminum tube to form a copper-aluminum composite tube, thereby reducing the use of copper resources, reducing the cost of the connecting pipe of the indoor and outdoor units of the air conditioner, and ensuring the strength of the connecting port of the connecting pipe of the indoor and outdoor units of the air conditioner.
[0016] 2. By evenly heating the two heat shrink sleeves, they are respectively attached to the outside of the copper tube and the limiting ring, so as to limit the rotating ring and strengthen the sealing of the connection between the aluminum tube and the copper tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0018] Figure 2 It is a schematic diagram of the partial split structure of the utility model.
[0019] Figure 3 It is a partial cross-sectional view of the utility model.
[0020] Figure 4 It is a cross-sectional view of the partially split structure of the utility model.
[0021] Notes on figure numbers: 1. Aluminum tube; 2. Copper tube; 3. Tube sleeve; 4. Fixing assembly; 5. Limiting ring; 6. Rotating ring; 7. Heat shrink tubing. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0024] See also Figures 1 to 4 , provided by an embodiment of the utility model, is a non-fusion-bonded composite connecting pipe for the copper-aluminum ports of the indoor and outdoor units of a split air conditioner, comprising an aluminum tube 1, a copper tube 2 and a fixing component 4, wherein two copper tubes 2 are provided, and the two copper tubes 2 are respectively connected to the two ends of the aluminum tube 1 through two groups of fixing components 4, and the outer side and the end faces of both sides of the aluminum tube 1 are respectively fixedly connected with pipe sleeves 3, one end of the two copper tubes 2 is respectively sleeved on the outer side of the two ends of the aluminum tube 1, and the inner side of the copper tube 2 is in contact with the outer side of the pipe sleeve 3.
[0025] Preferably, the fixing assembly 4 includes a limit ring 5 and a rotating ring 6, one end of the limit ring 5 is fixedly sleeved on the outside of the aluminum tube 1, the inner diameter of the limit ring 5 is consistent with the outer diameter of the copper tube 2, the outer side of the limit ring 5 is provided with a thread, and the end of the limit ring 5 away from the aluminum tube 1 is provided with a plurality of notches distributed in a ring array, the rotating ring 6 is sleeved on the outside of the limit ring 5 and is threadedly connected to the limit ring 5, and one end of the limit ring 5 with the notch is set to be an outward expansion type. The purpose of this setting is to achieve the purpose of fixing the copper tube 2 to the end of the aluminum tube 1 by rotating the rotating ring 6 to one side of the notch of the limit ring 5, and tightening one end of the notch of the limit ring 5 by the rotating ring 6, so that it is pressed against the outside of the copper tube 2.
[0026] Preferably, the limiting ring 5 is made of hard PVC material, a sealing pad is fixedly connected to the inner side of the limiting ring 5 where it contacts the copper tube 2, and the width of the rotating ring 6 is greater than the width of the slot opened at one end of the limiting ring 5. The purpose of this setting is to achieve the purpose of enhancing the connection stability and sealing performance between the limiting ring 5 and the copper tube 2 by setting the width of the sealing pad and the rotating ring 6.
[0027] Preferably, a plurality of rectangular anti-skid grooves are provided in the middle of the outer side of the rotating ring 6. The purpose of such a setting is to facilitate the relevant personnel to rotate the rotating ring 6 and speed up the installation efficiency of the copper tube 2 and the aluminum tube 1 through the setting of the plurality of rectangular anti-skid grooves.
[0028] In the embodiment of the utility model, one end of the two copper tubes 2 is respectively inserted into the two limit rings 5, and the copper tube 2 is sleeved on the outside of the tube sleeve 3 at the end of the aluminum tube 1. Through the setting of the tube sleeve 3, direct contact between the aluminum tube 1 and the copper tube 2 is avoided, and electrochemical reaction is prevented from occurring after long-term direct contact between the aluminum tube 1 and the copper tube 2, causing corrosion. Then, by twisting the rotating ring 6 until the rotating ring 6 threaded sleeve is covered on the outside of the notch of the limit ring 5, one end of the copper tube 2 is tightly connected to one end of the aluminum tube 1, and then the two heat shrink sleeves 7 are evenly heated to shrink the two heat shrink sleeves 7 when heated, so that the two heat shrink sleeves 7 are respectively tightly attached to the copper tube 2 and the outside of the limit ring 5, so as to enhance the connection stability and sealing between the copper tube 2 and the aluminum tube 1, and realize the two copper tubes 2 are respectively sealed and fixedly connected to the two ends of the aluminum tube 1 through two sets of fixing components 4 to form a copper-aluminum composite tube, so as to reduce the use of copper resources, reduce the cost of the connecting pipe of the indoor and outdoor units of the air conditioner, and ensure the strength of the connecting port of the connecting pipe of the indoor and outdoor units of the air conditioner.
[0029] See also Figures 1 to 4 As an embodiment of the utility model, heat shrink sleeves 7 are fixedly connected to both ends of the rotating ring 6, and the heat shrink sleeves 7 are configured as glue-containing heat shrink tubes.
[0030] Preferably, the outer wall of one end of the stop ring 5 fixedly connected to the aluminum tube 1 has a length of five to six millimeters without a thread groove, and when the rotating ring 6 is rotated to the end of the notch of the stop ring 5, the end of the heat shrink sleeve 7 of the rotating ring 6 close to the aluminum tube 1 is flush with the end of the stop ring 5. The purpose of this arrangement is to achieve the purpose of protecting the stop ring 5 and strengthening the sealing of the rotating ring 6 and the stop ring 5 by making one end of the heat shrink sleeve 7 flush with the end of the stop ring 5.
[0031] In the embodiment of the utility model, the two heat shrink sleeves 7 are uniformly heated to be respectively attached to the outside of the copper tube 2 and the limiting ring 5, thereby limiting the rotating ring 6 and strengthening the sealing of the connection between the aluminum tube 1 and the copper tube 2.
[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A non-welded composite connecting pipe for the copper-aluminum ports of the internal and external units of a split air conditioner. It is characterized in that It comprises an aluminum tube (1), a copper tube (2) and a fixing assembly (4), wherein two copper tubes (2) are provided, and the two copper tubes (2) are respectively connected to the two ends of the aluminum tube (1) through two sets of fixing assemblies (4), and the outer side and the two side end surfaces of the aluminum tube (1) are respectively fixedly connected with a tube sleeve (3), and one end of the two copper tubes (2) is respectively sleeved on the outer side of the two ends of the aluminum tube (1), and the inner side of the copper tube (2) is in contact with the outer side of the tube sleeve (3); The fixing assembly (4) comprises a limiting ring (5) and a rotating ring (6); one end of the limiting ring (5) is fixedly sleeved on the outside of the aluminum tube (1); the inner diameter of the limiting ring (5) is consistent with the outer diameter of the copper tube (2); a thread is provided on the outside of the limiting ring (5); one end of the limiting ring (5) away from the aluminum tube (1) is provided with a plurality of notches distributed in a circular array; the rotating ring (6) is sleeved on the outside of the limiting ring (5) and is threadedly connected to the limiting ring (5); and the end of the limiting ring (5) on which the notch is provided is configured to be outwardly expanded.
2. According to claim 1, a non-welded composite connecting pipe with copper and aluminum ports for the indoor and outdoor units of a split air conditioner, It is characterized in that The limiting ring (5) is made of hard PVC material, and a sealing gasket is fixedly connected to the inner side of the limiting ring (5) at the contact point with the copper tube (2), and the width of the rotating ring (6) is greater than the width of the notch opened at one end of the limiting ring (5).
3. According to claim 1, a non-welded composite connecting pipe with copper and aluminum ports for the internal and external units of a split air conditioner, It is characterized in that A plurality of rectangular anti-slip grooves are provided in the middle of the outer side of the rotating ring (6).
4. According to claim 1, a non-welded composite connecting pipe with copper and aluminum ports for indoor and outdoor units of a split air conditioner, It is characterized in that Both ends of the rotating ring (6) are respectively fixedly connected with heat shrink sleeves (7), and the heat shrink sleeves (7) are configured as adhesive-containing heat shrink sleeves.
5. According to claim 1, a non-welded composite connecting pipe with copper and aluminum ports for the indoor and outdoor units of a split air conditioner, It is characterized in that The outer wall of one end of the limiting ring (5) fixedly connected to the aluminum tube (1) has a five to six millimeter width without a thread groove, and when the rotating ring (6) is rotated to the end of the groove of the limiting ring (5), the end of the heat shrinkable sleeve (7) of the rotating ring (6) close to the aluminum tube (1) is flush with the end of the limiting ring (5).