Connecting pipe assembly and air conditioner

Abstract

The utility model discloses a connecting pipe assembly and air conditioner relates to air conditioner technical field, wherein, connecting pipe assembly includes refrigerant pipe and protecting pipe spring, refrigerant pipe one end is used for connecting air conditioner indoor unit, the other end of refrigerant pipe is used for connecting air conditioner outdoor unit, the protecting pipe spring is sleeved in the outer periphery of refrigerant pipe, on the cross section perpendicular to refrigerant pipe axial direction, define the inside circle diameter of protecting pipe spring as R, define the outside circle diameter of refrigerant pipe as r, the ratio of R and r is not less than 1.01, not more than 1.125, the utility model provides technical scheme can avoid the problem that the refrigerant pipe appears the flat tube and leads to the refrigerant flow noise.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to a connecting pipe assembly and an air conditioner. Background Technology

[0002] The connecting pipe assembly used in existing air conditioners needs to pass through the wall hole that connects the indoor and outdoor units during installation. Due to the limitations of the installation location of the indoor and outdoor units, the connecting pipe assembly may need to be bent once or multiple times. The connecting pipe is prone to deformation and collapse at the bending point, resulting in poor refrigerant flow and flow noise after assembly. Utility Model Content

[0003] The main purpose of this invention is to provide a connecting pipe assembly and an air conditioner, which aims to avoid the problem of refrigerant flow noise caused by a collapsed refrigerant pipe.

[0004] To achieve the above objectives, the connecting pipe assembly proposed in this utility model includes: A refrigerant pipe, one end of which is used to connect to the indoor unit of the air conditioner, and the other end of which is used to connect to the outdoor unit of the air conditioner; and A protective spring is sleeved on the outer circumference of the refrigerant pipe. On a cross-section perpendicular to the axial direction of the refrigerant pipe, the inner diameter of the protective spring is defined as R, and the outer diameter of the refrigerant pipe is defined as r. The ratio of R to r is not less than 1.01 and not greater than 1.125.

[0005] In one embodiment, when the refrigerant pipe is in a bent state under the action of external force, the maximum outer diameter of the refrigerant pipe is defined as r1, the minimum outer diameter of the refrigerant pipe is defined as r2, and the flattening ratio of the refrigerant pipe at the bent part is defined as (r1-r2) / r, wherein the flattening ratio of the refrigerant pipe at the bent part is not greater than 0.25.

[0006] In one embodiment, the refrigerant pipe is provided with multiple sections of the refrigerant pipe protective spring, and the multiple sections of the refrigerant pipe protective spring are spaced apart along the length direction of the refrigerant pipe.

[0007] In one embodiment, a protective spring is provided on the refrigerant pipe, and the protective spring extends along the length of the refrigerant pipe from one end of the refrigerant pipe to the other end of the refrigerant pipe.

[0008] In one embodiment, the refrigerant pipe is a light pipe; Alternatively, the outer surface of the refrigerant pipe is provided with an external thread layer, which is spirally wound along the length of the refrigerant pipe; Alternatively, the outer surface of the refrigerant pipe is provided with a steel wire layer, which extends along the length of the refrigerant pipe.

[0009] In one embodiment, the connecting pipe assembly further includes an insulation sleeve, which is fitted around the outer periphery of the protective pipe spring.

[0010] In one embodiment, each end of the refrigerant pipe is provided with a first quick connector, and the refrigerant pipe is used to connect the air conditioner indoor unit and / or the air conditioner indoor unit through the first quick connector.

[0011] In one embodiment, there are two refrigerant pipes arranged side by side, one of which is a gas refrigerant pipe and the other is a liquid refrigerant pipe, and a protective spring is provided on the outer periphery of each refrigerant pipe.

[0012] In one embodiment, the connecting pipe assembly further includes a retaining sleeve, which is sleeved around the outer periphery of the two protective pipe springs; Alternatively, the connecting pipe assembly may further include an insulation sleeve and a fixing sleeve, with the insulation sleeve covering the outer periphery of each of the protective pipe springs, and the fixing sleeve covering the outer periphery of the two insulation sleeves.

[0013] This utility model also proposes an air conditioner, including an indoor unit, an outdoor unit, and a connecting pipe assembly as described above, wherein the two ends of the connecting pipe assembly are respectively connected to the indoor unit and the outdoor unit.

[0014] The technical solution of this utility model includes a refrigerant pipe in the connecting pipe assembly for connecting the indoor and outdoor units of the air conditioner. The assembly also includes a protective spring, which is sleeved on the outer circumference of the refrigerant pipe and positioned on a cross-section perpendicular to the axial direction of the refrigerant pipe. The ratio of the inner diameter of the protective spring to the outer diameter of the refrigerant pipe is not less than 1.01 and not greater than 1.125. This allows the refrigerant pipe to bend under external force, with each spiral segment of the protective spring at the bend evenly absorbing the bending deformation force. This prevents stress concentration at the bend, avoiding excessive deformation and pipe collapse. Furthermore, it prevents the refrigerant pipe from bending and deforming under stress during air conditioner assembly, thus avoiding poor refrigerant flow and noise problems after assembly. Attached Figure Description

[0015] 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 the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of an embodiment of the connecting pipe assembly provided by this utility model; Figure 2 for Figure 1 Another angle view of the connecting pipe assembly; Figure 3 for Figure 1 Installation diagram of the insulation sleeve; Figure 4 for Figure 1 Installation diagram of the middle protective tube spring; Figure 5 for Figure 1 Schematic diagram of the connection between the intermediate refrigerant pipe and the first quick connector; Figure 6 for Figure 1 A schematic diagram of the cross-section of the intermediate refrigerant pipe at the bend; Figure 7 for Figure 1 Schematic diagram of the installation of the middle protective tube spring on the refrigerant pipe; Figure 8 for Figure 1 A schematic diagram of the refrigerant pipe in a bent state.

[0017] Explanation of icon numbers: 100. Connecting pipe assembly; 10. Refrigerant pipe; 20. Pipe spring; 30. Insulation sleeve; 40. First quick connector; 50. Fixing sleeve; 200. Second quick connector.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] The existing air conditioner connection pipe assembly requires passing through the wall hole that connects the indoor and outdoor units during installation. Due to the limitations of the installation location of the indoor and outdoor units, the connection pipe assembly may need to be bent once or multiple times. The connection pipe is prone to deformation and collapse at the bending point, resulting in poor refrigerant flow and flow noise after assembly.

[0023] This utility model proposes a connecting pipe assembly 100.

[0024] Please see Figures 1 to 8 As shown, in one embodiment of this utility model, the connecting pipe assembly 100 includes a refrigerant pipe 10 and a protective spring 20; one end of the refrigerant pipe 10 is used to connect to the indoor unit of the air conditioner, and the other end of the refrigerant pipe 10 is used to connect to the outdoor unit of the air conditioner; the protective spring 20 is sleeved on the outer periphery of the refrigerant pipe 10, and on a cross-section perpendicular to the axial direction of the refrigerant pipe 10, the inner diameter of the protective spring 20 is defined as R, and the outer diameter of the refrigerant pipe 10 is defined as r, and the ratio of R to r is not less than 1.01 and not greater than 1.125.

[0025] The connecting pipe assembly 100 of this utility model is used to connect the indoor unit and the outdoor unit of an air conditioner. The refrigerant pipe can be copper or other materials. It is understood that during air conditioner assembly, the outdoor unit and indoor unit need to be connected via the refrigerant pipe 10 to achieve refrigerant circulation. In cooling mode, the compressor of the outdoor unit outputs compressed refrigerant through the exhaust port. The refrigerant flows to the outdoor heat exchanger of the outdoor unit, exchanges heat with the external environment, and then flows through the refrigerant pipe 10 to the indoor unit. After exchanging heat with the indoor heat exchanger, it flows back through the refrigerant pipe 10 to the compressor intake port of the outdoor unit. In heating mode, the compressor of the outdoor unit outputs compressed refrigerant through the exhaust port. The refrigerant flows through the refrigerant pipe 10 to the indoor heat exchanger of the indoor unit, releases heat, and then flows through the refrigerant pipe 10 to the outdoor heat exchanger of the outdoor unit, absorbs heat, and then flows to the compressor intake port.

[0026] It is understood that, regardless of whether it is in cooling or heating mode, the refrigerant flows from the indoor side to the outdoor side and from the outdoor side to the indoor side through different refrigerant pipes 10. Therefore, the connecting pipe assembly 100 may include at least two refrigerant pipes 10, one of which is used for gaseous refrigerant and the other is used for liquid refrigerant. Each refrigerant pipe 10 is fitted with a protective spring 20 on its outer periphery.

[0027] It is understandable that when a protective spring 20 is fitted around the outside of the refrigerant pipe 10, each segment of the spiral-shaped protective spring 20 fitted around the outside of the refrigerant pipe 10 is elastic. When the refrigerant pipe 10 is subjected to external bending deformation, the external bending force on the refrigerant pipe 10 first acts on the protective spring 20 at the bending point. The spring segment subjected to the bending force transmits the bending force to the adjacent segment, so that each segment near the bending point can withstand the external bending force. The elastic expansion and contraction force generated by the elastic deformation of each segment can offset part of the external bending force, so that there is no large stress concentration point in the bending part of the refrigerant pipe 10, thereby avoiding the situation where the refrigerant pipe 10 deforms excessively and flattens, resulting in a collapsed pipe, which would affect the flow of refrigerant.

[0028] Understandably, when the distance between the protective spring 20 and the refrigerant pipe 10 is too large, the protective spring 20 does not need to effectively counteract the bending force on the refrigerant pipe 10, causing the refrigerant pipe 10 to easily deform. When the distance between the protective spring 20 and the refrigerant pipe 10 is too small, it is not conducive to the sleeve installation of the protective spring 20 on the refrigerant pipe 10. Therefore, it is set on a cross-section perpendicular to the axial direction of the refrigerant pipe 10, so that the ratio of the inner diameter R of the protective spring 20 to the outer diameter r of the refrigerant pipe 10 is not less than 1.01, avoiding difficulty in installing the protective spring 20 on the outer circumference of the refrigerant pipe 10. At the same time, the ratio of the inner diameter R of the protective spring 20 to the outer diameter r of the refrigerant pipe 10 is not greater than 1.125, to avoid the protective spring 20 being unable to effectively counteract the bending force on the refrigerant pipe 10, resulting in excessive deformation and flattening of the refrigerant pipe 10.

[0029] For example, the ratio of R to r can be any point value within the interval [1.01, 1.05, 1.11, 1.115, 1.12, 1.125, and [1.01, 1.125].

[0030] The technical solution of this utility model includes a refrigerant pipe 10 in the connecting pipe assembly 100, which is used to connect the indoor unit and the outdoor unit of the air conditioner. The connecting pipe assembly 100 also includes a protective spring 2020, which is sleeved on the outer circumference of the refrigerant pipe 10 and positioned on a cross-section perpendicular to the axial direction of the refrigerant pipe 10. The ratio of the inner diameter of the protective spring 20 to the outer diameter of the refrigerant pipe 10 is not less than 1.01 and not greater than 1.125. In this way, when the refrigerant pipe 10 is subjected to external force and bends, the elastic deformation of each spiral segment of the protective spring 20 at the bending point can evenly absorb the bending deformation force of the refrigerant pipe 10, avoiding stress concentration at the bending point, which could lead to excessive deformation and flattening of the refrigerant pipe 10. This also prevents the refrigerant pipe 10 from bending and deforming under force during the assembly of the connecting pipe assembly 100 with the air conditioner, thus avoiding problems such as poor refrigerant flow and flow noise after assembly.

[0031] like Figure 6 , Figure 8 As shown, in one embodiment, when the refrigerant pipe 10 is in a bent state under the action of external force, on the cross section perpendicular to the axial direction of the bent part of the refrigerant pipe 10, the maximum outer diameter of the refrigerant pipe 10 is defined as r1, the minimum outer diameter of the refrigerant pipe 10 is defined as r2, the flattening ratio of the refrigerant pipe 10 at the bent part is defined as (r1-r2) / r, and the flattening ratio of the refrigerant pipe 10 at the bent part is not greater than 0.25.

[0032] Understandably, because a protective spring is installed on the outside of the refrigerant pipe, the spring can elastically deform at the bending point to counteract the bending force when the pipe is bent, preventing stress concentration that could lead to pipe collapse. In this case, the refrigerant pipe is only partially flattened at the bend. This ensures that the ratio of the difference between the maximum and minimum outer diameters (r1 and r2) of the refrigerant pipe on the cross-section perpendicular to the axial direction at the bend is no greater than 0.25 to the outer diameter of the unbent portion. The refrigerant pipe is not excessively flattened at the bend. This prevents poor refrigerant flow and noise.

[0033] The maximum outer diameter of the refrigerant pipe can be the major axis diameter of the approximately elliptical cross-section after the refrigerant pipe is bent, and the minimum outer diameter of the refrigerant pipe can be the end axis diameter of the approximately elliptical cross-section after the refrigerant pipe is bent.

[0034] For example, the flattening ratio of the refrigerant pipe at the bend can be 0.25, 0.20, 0.15, 0.10, 0.05, or any point value in the range [0, 0.25).

[0035] Optionally, the refrigerant pipe 10 is provided with multiple sections of the pipe protection spring 20, and the multiple sections of the pipe protection spring 20 are spaced apart along the length direction of the refrigerant pipe 10.

[0036] When the refrigerant pipe spring 20 is configured into multiple segments and spaced apart along the length of the refrigerant pipe 10, the installation cost of the refrigerant pipe spring 20 can be reduced, avoiding the installation difficulties caused by using a single, continuous refrigerant pipe spring 20. Each segment of the refrigerant pipe spring 20 can be positioned at locations on the refrigerant pipe 10 that are prone to bending and deformation, thus preventing the refrigerant pipe 10 from collapsing.

[0037] Alternatively, the protective spring 20 can be arranged to cover the refrigerant pipe 10 as a whole. The protective spring 20 is sleeved from one end of the refrigerant pipe 10 to the other end of the refrigerant pipe 10. Optionally, the refrigerant pipe 10 is provided with one protective spring 20, which extends along the length of the refrigerant pipe 10 from one end of the refrigerant pipe 10 to the other end of the refrigerant pipe 10.

[0038] This ensures that the refrigerant pipe 10 is completely protected against bending and collapse. When the connecting pipe assembly 100 is assembled between the indoor and outdoor units of the air conditioner, any part of the connecting pipe assembly 100 can effectively prevent pipe collapse and excessive deformation caused by bending.

[0039] In addition, the refrigerant pipe 10 can be a smooth pipe; that is, the outer surface of the connecting pipe is smooth overall. Alternatively, to further improve the bending and deformation resistance of the refrigerant pipe 10, an external thread layer can be provided on the outer surface of the refrigerant pipe 10, and the external thread layer is spirally coiled along the length direction of the refrigerant pipe 10. The external thread layer can be a threaded groove formed on the outer surface of the refrigerant pipe 10, or a threaded rib provided on the outer surface of the refrigerant pipe 10. It can be understood that the refrigerant pipe 10 with an external thread layer can improve the rigidity and structural strength of the pipe body. During installation, bending, or long-term use, it can more effectively resist external deformation, reduce the probability of pipe flattening, maintain the unobstructed flow of the pipe, and give the refrigerant pipe 10 a certain ability to resist deformation and collapse, thereby reducing abnormal noise and decreased cooling efficiency caused by pipe deformation.

[0040] Alternatively, a steel wire layer can be provided on the outer surface of the refrigerant pipe 10, extending along the length of the refrigerant pipe 10. This steel wire layer may include multiple steel wires spirally wound around the outer surface of the refrigerant pipe 10; these wires can be combined with plastic to form the steel wire layer. It is understood that the steel wire layer on the outer surface of the refrigerant pipe 10 can also improve the rigidity and structural strength of the pipe, thereby giving the refrigerant pipe 10 a certain resistance to deformation and collapse, thus reducing abnormal noise and decreased cooling efficiency caused by pipe deformation.

[0041] like Figure 1 , Figure 3 As shown, the connecting pipe assembly 100 also includes an insulation sleeve 30, which is sleeved on the outer periphery of the protective pipe spring 20.

[0042] The insulation sleeve 30 can be made of materials such as polyurethane foam, rubber-plastic sponge, or polyethylene, which possess good thermal insulation properties and weather resistance. It is understood that when the insulation sleeve 30 is fitted around the outer periphery of the protective spring 20, both the refrigerant pipe 10 and the protective spring 20 are located inside the insulation sleeve 30. This provides insulation for the refrigerant pipe 10, preventing condensation from forming on its outer surface during installation and use. Of course, in certain environmental conditions, such as when condensation is unlikely to form on the outer surface of the refrigerant pipe 10, the insulation sleeve may not be required.

[0043] like Figure 1 , Figure 2 , Figure 3 As shown, in one embodiment, each end of the refrigerant pipe 10 is provided with a first quick connector 40, and the refrigerant pipe 10 is used to connect the air conditioner indoor unit and / or the air conditioner indoor unit through the first quick connector 40.

[0044] The first quick-connector 40 can be welded to the end of the refrigerant pipe 10. The first quick-connectors 40 at both ends of the refrigerant pipe 10 can form a sealed chamber with the inner cavity of the refrigerant pipe 10. Before the refrigerant pipe 10 is installed, the chamber can be pre-vacuumed before the refrigerant is injected into the evacuated chamber. This allows the refrigerant pipe 10 to complete the evacuation and refrigerant injection operations before assembly, eliminating the need for a separate evacuation operation and reducing installation labor costs.

[0045] Alternatively, both the indoor and / or outdoor units of the air conditioner can be equipped with a second quick-connect coupling 200 for mating with the first quick-connect coupling 40 of the connecting pipe assembly 100. During installation, the first quick-connect coupling 40 and the second quick-connect coupling 200 can be mated and positioned first, and then the nuts located on the first quick-connect coupling 40 or the second quick-connect coupling 200 can be tightened to connect the first quick-connect coupling 40 and the second quick-connect coupling 200, thus achieving the connection between the connecting pipe assembly 100 and the indoor and / or outdoor units of the air conditioner.

[0046] Additionally, the first quick-connect coupling 40 can be equipped with a first resilient valve, and the second quick-connect coupling 200 can be equipped with a second resilient valve. When the connecting pipe assembly 100 is not connected to the indoor unit and / or outdoor unit of the air conditioner, the valve plate of the first resilient valve elastically abuts against the connection port of the first quick-connect coupling 40, and the valve plate of the second resilient valve abuts against the connection port of the second quick-connect coupling 200. When the first quick-connect coupling 40 and the second quick-connect coupling 200 are connected, the valve plates of the first and second resilient valves push against each other, moving them away from their original positions. Both the connection ports of the first quick-connect coupling 40 and the second quick-connect coupling 200 are opened, allowing for conductivity between them, thus achieving conductivity after the refrigerant pipe 10 is connected. This can replace the existing welding or screw-driving installation methods, making the overall installation simple and quick, and further reducing the workload of workers.

[0047] like Figures 1 to 5 As shown, in one embodiment, there are two refrigerant pipes 10 arranged side by side. One refrigerant pipe 10 is a gas refrigerant pipe and the other is a liquid refrigerant pipe. Each refrigerant pipe 10 is provided with a protective spring 20 on its outer periphery.

[0048] It is understandable that when an air conditioner is working, there are two refrigerant paths between the indoor and outdoor units: one for gaseous refrigerant and the other for liquid refrigerant, creating a refrigerant circulation path between them. Therefore, the refrigerant pipes 10 of the connecting pipe assembly 100 can be configured as two, one for gaseous refrigerant and the other for liquid refrigerant, and a protective spring 20 can be fitted around the outer periphery of each refrigerant pipe 10 to provide bending protection for either refrigerant pipe 10.

[0049] like Figure 1As shown, the connecting pipe assembly 100 also includes a fixing sleeve 50, which is sleeved on the outer periphery of the two protective pipe springs 20.

[0050] The fixing sleeve 50 can be a soft outer sleeve, which can be cylindrical in shape and made of materials such as silicone, rubber, plastic, foam, or steel wire hose (the whole is made of plastic material, and the inside of the plastic material is set with mesh steel wire).

[0051] Understandably, in certain environmental conditions, when the connecting pipe assembly 100 is not equipped with an insulation layer, the fixing sleeve 50 can be fitted around the outer periphery of the two protective springs 20, so that the two refrigerant pipes 10 equipped with protective springs 20 can be fitted by the fixing sleeve 50 to form a whole connecting pipe assembly 100. When connecting the connecting pipe assembly 100 to the indoor unit and the outdoor unit of the air conditioner, there is no need to use cable ties or other structures to fix the connecting pipe assembly 100. When the first quick connector 40 and the second quick connector 200 are connected for installation, the connecting pipe assembly 100 can be quickly assembled, saving labor costs.

[0052] In other environmental conditions, when it is necessary to install an insulation sleeve 30 for the refrigerant pipe 10, the connecting pipe assembly 100 may optionally include an insulation sleeve 30 and a fixing sleeve 50. The insulation sleeve 30 is sleeved on the outer periphery of each of the protective pipe springs 20, and the fixing sleeve 50 is sleeved on the outer periphery of the two insulation sleeves 30.

[0053] In this way, the connecting pipe assembly 100 can be integrated into a whole by pre-fitting the fixing sleeve 50 onto the two insulation sleeves 30, and can be installed with the indoor and outdoor air conditioning units, thereby saving labor costs.

[0054] This utility model also proposes an air conditioner, which includes an indoor unit, an outdoor unit, and a connecting pipe assembly 100. The specific structure of the connecting pipe assembly 100 is as described in the above embodiments. Since this air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The two ends of the connecting pipe assembly 100 are respectively connected to the indoor unit and the outdoor unit.

[0055] Additionally, the connecting cable between the indoor and outdoor units of the air conditioner can also be installed within the mounting sleeve 50. This connecting cable may include electrical wires, signal lines, and other cables. Both ends of the connecting cable are connection terminals, and the plug-in structure of the connection terminals with the indoor and outdoor units can be set to the same specification. This allows for convenient operation and connection, making it easier for individuals to install the equipment independently, especially in areas where labor installation costs are high.

[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A connecting pipe assembly, characterized in that, include: A refrigerant pipe, one end of which is used to connect to the indoor unit of the air conditioner, and the other end of which is used to connect to the outdoor unit of the air conditioner; as well as A protective spring is sleeved on the outer circumference of the refrigerant pipe. On a cross-section perpendicular to the axial direction of the refrigerant pipe, the inner diameter of the protective spring is defined as R, and the outer diameter of the refrigerant pipe is defined as r. The ratio of R to r is not less than 1.01 and not greater than 1.

125.

2. The connecting pipe assembly as described in claim 1, characterized in that, When the refrigerant pipe is in a bent state under the action of external force, the maximum outer diameter of the refrigerant pipe is defined as r1, the minimum outer diameter of the refrigerant pipe is defined as r2, and the flattening ratio of the refrigerant pipe at the bent part is defined as (r1-r2) / r, and the flattening ratio of the refrigerant pipe at the bent part is not greater than 0.

25.

3. The connecting pipe assembly as described in claim 1, characterized in that, The refrigerant pipe is provided with multiple sections of the refrigerant pipe protective spring, which are spaced apart along the length of the refrigerant pipe.

4. The connecting pipe assembly as claimed in claim 1, characterized in that, The refrigerant pipe is provided with a protective spring, which extends along the length of the refrigerant pipe from one end to the other end.

5. The connecting pipe assembly as claimed in claim 1, characterized in that, The refrigerant pipe is a bare pipe; Alternatively, the outer surface of the refrigerant pipe is provided with an external thread layer, which is spirally wound along the length of the refrigerant pipe; Alternatively, the outer surface of the refrigerant pipe is provided with a steel wire layer, which extends along the length of the refrigerant pipe.

6. The connecting pipe assembly as claimed in claim 1, characterized in that, The connecting pipe assembly also includes an insulation sleeve, which is fitted around the outer periphery of the protective pipe spring.

7. The connecting pipe assembly as claimed in claim 1, characterized in that, The refrigerant pipe is provided with a first quick connector at each end, and the refrigerant pipe is used to connect the air conditioner indoor unit and / or the air conditioner indoor unit through the first quick connector.

8. The connecting pipe assembly as described in any one of claims 1 to 7, characterized in that, The refrigerant pipe has two sections, which are arranged side by side. One section is a gas refrigerant pipe, and the other is a liquid refrigerant pipe. Each refrigerant pipe is provided with a protective spring on its outer periphery.

9. The connecting pipe assembly as claimed in claim 8, characterized in that, The connecting pipe assembly also includes a fixing sleeve, which is sleeved on the outer periphery of the two protective pipe springs; Alternatively, the connecting pipe assembly may further include an insulation sleeve and a fixing sleeve, with the insulation sleeve covering the outer periphery of each of the protective pipe springs, and the fixing sleeve covering the outer periphery of the two insulation sleeves.

10. An air conditioner, characterized in that, It includes an indoor air conditioner unit, an outdoor air conditioner unit, and a connecting pipe assembly as described in any one of claims 1 to 9, wherein the two ends of the connecting pipe assembly are respectively connected to the indoor air conditioner unit and the outdoor air conditioner unit.

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