A pipeline stress test method applied to a saddle type window machine and the saddle type window machine

Abstract

This invention discloses a method for testing pipeline stress in a saddle-type window air conditioner and the saddle-type window air conditioner itself. The window air conditioner includes an indoor unit, an outdoor unit, and a retractable saddle structure. The refrigerant pipeline passes through the saddle structure. The weight of the indoor unit is W1, the weight of the outdoor unit is W2, the distance between the indoor unit and the wall is L1, and the distance between the outdoor unit and the wall is L2. In the unstretched state, L1 + L2 = Y. min When the saddle bridge is in full tension, L1 + L2 = Y max Y min and Y max Given the known data, the stress testing method includes: determining the stress test points of the refrigerant piping through simulation; determining the installation position of the window unit on the wall using the formula ε=a×(W2 / L1+W1 / L2); testing the refrigerant piping strain of the window unit under both unstretched and stretched conditions; and testing the refrigerant piping strain of the window unit under three operating conditions: start-up, operation, and shutdown. This method can test the strain of the window unit under the most unfavorable conditions, improving the safety of the window unit piping.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and more particularly to a pipeline stress testing method for saddle-type window air conditioners and the saddle-type window air conditioner itself. Background Technology

[0002] Stress testing is a mandatory test for air conditioners before they leave the factory. Piping will experience strain under external forces or non-uniform pressure / temperature fields, which is the pipe's deformation rate. This is a dimensionless number, and excessive strain can lead to pipe breakage. Therefore, the strain needs to be controlled within a certain range. Stress testing checks whether the strain exceeds the standard.

[0003] Saddle-type window air conditioners mainly consist of an indoor section, an outdoor section, and a saddle bridge. The saddle bridge separates the indoor and outdoor sections, effectively reducing indoor noise. During installation, the window unit straddles the window, and the saddle bridge is extendable to adjust the distance between the indoor and outdoor sections to accommodate walls of varying thicknesses. The N-shaped structure of the saddle-type window air conditioner necessitates specially designed internal piping to accommodate the expansion and contraction of the saddle bridge.

[0004] Existing pipe stress testing methods are only applicable to ordinary window air conditioners. Ordinary window air conditioners only require a laboratory bench and stable operating conditions for testing. However, the N-type saddle-shaped window air conditioner and its installation method differ significantly from ordinary window air conditioners. The installation method has a significant impact on the maximum strain, and it is necessary to simulate the maximum strain as closely as possible according to the user's actual usage scenario. Therefore, saddle-shaped window air conditioners cannot be tested using conventional stress testing methods; otherwise, the test results will be inaccurate.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0006] In response to the problems mentioned in the background art, this invention proposes a pipeline stress testing method and a saddle-type window air conditioner, which can test the strain of the window air conditioner under the most unfavorable conditions and improve the safety of the window air conditioner pipeline.

[0007] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0008] This invention provides a method for testing pipe stress in a saddle-type window machine, comprising:

[0009] The saddle-type window air conditioner includes an indoor unit, an outdoor unit, and a saddle bridge structure connecting the indoor unit and the outdoor unit. The saddle bridge structure is telescopic to adjust the distance between the indoor unit and the outdoor unit, and the refrigerant pipeline passes through the saddle bridge structure.

[0010] The weight of the indoor unit is W1, and the weight of the outdoor unit is W2;

[0011] The test bench used for stress testing of window air conditioners is equipped with a wall. The distance between the indoor unit and the wall is set as L1, and the distance between the outdoor unit and the wall is set as L2. In the unstretched state, the saddle bridge structure has L1 + L2 = Y. min The saddle bridge structure, under full tension, has L1 + L2 = Y. max Y min and Y max The data is known.

[0012] The stress testing method for the refrigerant pipeline includes:

[0013] Determine the test points, determine the stress test points of the refrigerant pipeline through simulation, and place sensors at the stress test points;

[0014] Determine the installation location of the window unit on the wall. The strain of the refrigerant piping is ε, and the theoretical upper limit of the strain ε is ε_a. max1 Given the data, the strain coefficient a = ε max1 The actual upper limit value of the dependent variable ε is calculated using the formula ε=a×(W2 / L1+W1 / L2). max2 and the dependent variable takes ε max2 The corresponding L1 and L2 at that time;

[0015] The strain of the refrigerant piping in the saddle bridge structure under unstretched conditions was tested, and ε was taken as the strain ε. max2 The window unit is installed on the wall using L1 and L2 corresponding to the time, and the refrigerant pipeline strain of the window unit is tested in three working states: start-up, operation, and shutdown.

[0016] The stress in the refrigerant piping of the saddle bridge structure under full tension was tested, and ε was taken according to the strain ε. max2 The corresponding L1 and L2 are used to install the window unit onto the wall, and the refrigerant pipeline strain of the window unit is tested in three working states: start-up, operation, and shutdown.

[0017] In some embodiments of this application, when the window unit is subjected to stress testing in three states—start-up, operation, and shutdown—the strain of the refrigerant piping under rated voltage Ue, rated voltage Ue-u1, and rated voltage Ue+u2 is tested in each state.

[0018] In some embodiments of this application, when the window unit is in the start-up working state and the refrigerant pipeline stress test is performed, the refrigerant pipeline strain is tested within a time period t1 after the compressor reaches the rated frequency.

[0019] In some embodiments of this application, when the window unit is in operation and the refrigerant pipeline stress test is performed, the refrigerant pipeline strain is tested during the time period t2 after the compressor has been running stably.

[0020] In some embodiments of this application, when the refrigerant pipeline stress test is performed on the window unit in the shutdown working state, the refrigerant pipeline strain is measured during the time period t3 before the window unit is turned off and the time period t4 after the window unit is turned off.

[0021] In some embodiments of this application, the refrigerant pipeline includes a return gas pipeline group, which includes a first return gas pipeline section, a second return gas pipeline section, and a third return gas pipeline section connected in sequence.

[0022] The first return gas pipe section is connected to the indoor heat exchanger, the third return gas pipe section is connected to the compressor located in the outdoor unit, and the second return gas pipe section has a U-shaped structure and is located in the inner cavity of the saddle bridge structure;

[0023] The first return gas pipe section has a bend near its end to connect with the indoor heat exchanger, and the third return gas pipe section has a bend near its end to connect with the compressor. The bend is a stress test point.

[0024] In some embodiments of this application, the third return gas pipeline section includes a third return gas pipeline section 1, a third return gas pipeline U-shaped section and a third return gas pipeline section 2 connected in sequence. The opening of the third return gas pipeline U-shaped section faces upward. The third return gas pipeline section 1 is connected to the second return gas pipeline section, and the third return gas pipeline section 2 is connected to the suction port of the compressor.

[0025] The stress test point is located at the bottom bend of the U-shaped section of the third return gas pipeline.

[0026] The present invention also provides a saddle-type window air conditioner, including an indoor unit, an outdoor unit, and a saddle bridge structure connecting the indoor unit and the outdoor unit, the saddle bridge structure comprising:

[0027] The outer saddle-shaped housing is fixedly connected to one of the indoor unit and the outdoor unit;

[0028] The inner saddle bridge housing is fixedly connected to the other of the indoor unit and the outdoor unit. The outer saddle bridge housing is sleeved on the outside of the inner saddle bridge housing, and the outer saddle bridge housing and the inner saddle bridge housing can move relative to each other.

[0029] The refrigerant piping passes through the inner saddle axle housing. Before the window unit leaves the factory, the refrigerant piping undergoes stress testing using the piping stress testing method as described in any one of claims 1 to 7.

[0030] In some embodiments of this application, an electrical box is provided in the inner cavity of the inner saddle axle housing. The electrical box is disposed against one side wall of the inner saddle axle housing, and there is a gap between the electrical box and the other side wall of the inner saddle axle housing for the refrigerant pipeline to run through.

[0031] In some embodiments of this application, the portion of the refrigerant pipeline located within the inner cavity of the inner saddle housing has a U-shaped bend, and the electrical box is located within the area enclosed by the U-shaped bend.

[0032] Compared with the prior art, the advantages and positive effects of the present invention are:

[0033] The stress testing method for saddle-type window air conditioners in this application can simulate the maximum strain of refrigerant pipelines as closely as possible according to the actual usage scenarios of the window air conditioner. It can test the strain of the window air conditioner under the most unfavorable conditions, ensuring the accuracy and reliability of pipeline stress testing, improving the safety of pipelines during actual use of the window air conditioner, and effectively avoiding situations where excessive stress in the refrigerant pipelines leads to pipeline breakage and refrigerant leakage in different installation and usage conditions of the window air conditioner.

[0034] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the saddle-type window machine placed on the experimental table according to an embodiment;

[0037] Figure 2 This is a schematic diagram of the saddle-type window machine as viewed from the indoor side according to an embodiment;

[0038] Figure 3 This is a schematic diagram of the saddle-type window unit as viewed from the outside according to an embodiment;

[0039] Figure 4 This is a schematic diagram of the stretched saddle bridge structure of the saddle-type window machine according to an embodiment.

[0040] Figure 5 for Figure 4 The diagram shown is a structural schematic with the casing omitted.

[0041] Figure 6This is a structural schematic diagram of the saddle bridge cover according to an embodiment;

[0042] Figure 7 This is a structural schematic diagram of the inner saddle axle housing according to an embodiment;

[0043] Figure 8 for Figure 7 The diagram shown is a view of the structure from Q1 to the observed structure.

[0044] Figure 9 This is an exploded view of the inner saddle axle housing according to an embodiment;

[0045] Figure 10 This is a schematic diagram of the structure of the outer saddle axle housing according to an embodiment;

[0046] Figure 11 for Figure 10 The diagram shown is a view of the structure from Q2.

[0047] Figure 12 This is an exploded view of the outer saddle axle housing according to an embodiment;

[0048] Figure 13 This is a schematic diagram of the internal piping structure of a saddle-type air conditioner according to an embodiment;

[0049] Figure 14 This is a schematic diagram of the return gas pipe assembly according to an embodiment;

[0050] Figure label:

[0051] 100 - Indoor unit;

[0052] 200 - Outdoor unit, 210 - Adjusting bolt, 220 - Compressor;

[0053] 300-Saddle bridge structure;

[0054] 310-Inner saddle axle housing, 311-Inner saddle axle L-shaped base plate, 3111-Transverse part of inner saddle axle L-shaped base plate, 3112-Vertical part of inner saddle axle L-shaped base plate, 312-Inner saddle axle cover plate, 313-First through cavity, 314-Inner saddle axle reinforcing plate, 315-Buffer sealing part;

[0055] 320-Outer saddle axle housing, 321-Outer saddle axle L-shaped base plate, 3211-Transverse part of outer saddle axle L-shaped base plate, 3212-Vertical part of outer saddle axle L-shaped base plate, 322-Outer saddle axle cover plate, 323-Second through cavity, 324-Outer saddle axle reinforcing plate;

[0056] 330 - Saddle axle cover, 331 - Top plate of saddle axle cover, 332 - Side plate of saddle axle cover, 3321 - Lateral part of side plate of saddle axle cover, 3322 - Vertical part of side plate of saddle axle cover, 333 - Protrusion.

[0057] 400 - Electrical box; 410 - Sloping wall;

[0058] 500 - Return air pipe assembly, 510 - First return air pipe section, 520 - Second return air pipe section, 530 - Third return air pipe section, 531 - First section of the third return air pipe, 532 - U-shaped section of the third return air pipe, 533 - Second section of the third return air pipe, 540 - Spring;

[0059] 600 - Lab bench, 610 - Wall. Detailed Implementation

[0060] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0062] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0066] [Saddle-type window air conditioner]

[0067] This embodiment discloses a saddle-type window machine, referring to... Figure 1 It includes an indoor unit 100 located on the indoor side, an outdoor unit 200 located on the outdoor side, and a saddle bridge structure 300 connecting the indoor unit 100 and the outdoor unit 200.

[0068] The saddle-type window air conditioner has an N-type structure, with the indoor unit 100 and the outdoor unit 200 located at both ends of the saddle structure 300 and on the same side of the saddle structure 300. The indoor unit 100 and the outdoor unit 200 extend downward toward the saddle structure 300.

[0069] When the saddle-type window air conditioner is installed on the window, the saddle bridge structure 300 sits directly on the window, the indoor unit 100 is located on the indoor side, and the outdoor unit 200 is located on the outdoor side.

[0070] Since both the indoor unit 100 and the outdoor unit 200 are located below the window, this saddle-shaped air conditioner solves the problem of existing integrated window units blocking sunlight after installation.

[0071] By separating the indoor unit 100 from the outdoor unit 200 through the saddle bridge structure 300, it is helpful to prevent the noise of the outdoor unit 200 from being transmitted to the indoor side, thereby improving user comfort.

[0072] The indoor unit 100 mainly includes components such as the casing, indoor heat exchanger, water tray, cross-flow fan, and air duct.

[0073] The outdoor unit 200 mainly includes components such as the casing, outdoor heat exchanger, axial fan, and compressor.

[0074] In some embodiments of this application, the saddle bridge structure 300 is telescopic, and the distance between the indoor unit 100 and the outdoor unit 200 can be adjusted by adjusting the length of the saddle bridge structure 300 to adapt to walls of different thicknesses.

[0075] The 300 saddle axle structure can be equipped with multiple telescopic positions for easy adjustment and use.

[0076] [Stress testing of refrigerant piping]

[0077] The heat exchange piping of a saddle-type window air conditioner mainly includes a return air pipe assembly, a subcooling pipe assembly, an exhaust pipe, and a water-absorbing pipe. One end of the subcooling pipe assembly is connected to the liquid inlet of the evaporator (corresponding to the indoor heat exchanger), and the other end is connected to the water-absorbing pipe; one end of the return air pipe assembly is connected to the air outlet of the evaporator, and the other end is connected to the suction port of the compressor; one end of the exhaust pipe is connected to the air inlet of the condenser (corresponding to the outdoor heat exchanger), and the other end is connected to the exhaust port of the compressor; one end of the water-absorbing pipe is connected to the subcooling pipe assembly, and the other end is connected to the liquid outlet of the condenser.

[0078] The refrigerant piping passes through the saddle structure 300, specifically the return gas pipe assembly and the subcooling pipe assembly. Since the saddle structure 300 is expandable, both the return gas pipe assembly and the subcooling pipe assembly need to have a certain range of expansion to accommodate the adjustment of the saddle structure 300. Therefore, when the window unit undergoes stress testing of the refrigerant piping before leaving the factory, the stress changes in the refrigerant piping caused by the expansion and contraction of the saddle structure 300 must be fully considered. This ensures that, regardless of the user's desired position of the window unit after it leaves the factory, the refrigerant piping will meet stress requirements, guaranteeing the safety of the window unit's piping and preventing refrigerant leakage.

[0079] The stress testing method for refrigerant pipelines mainly includes the following steps:

[0080] 1. Determine the stress test points of the refrigerant pipeline using CAE simulation, and place sensors at the stress test points;

[0081] 2. Determine the installation position of the window unit on the test bench 600. The test bench 600 simulates the structure of the window and the wall. Set up the wall 610 on the test bench 600. During the experiment, straddle the window unit on the wall 610. Determine the distance between the indoor unit 100 and the wall 610, as well as the distance between the outdoor unit 200 and the wall 610.

[0082] 3. Window unit preparation complete, stress testing begins;

[0083] 4. After the test is completed, a report will be generated, which will show which specific part of which pipeline has a risk point.

[0084] Steps 2 and 3 are the key improvements in this embodiment, which will be described in detail below.

[0085] In step 2, two test states of the window machine are determined based on the pull-out position of the saddle-type window machine: a fully stretched test state and a non-stretched test state. These two states can cover all positions of the window machine, that is, they can cover the most unfavorable state for stress testing.

[0086] The installation position of the window unit is determined using the formula ε=a×(W2 / L1+W1 / L2). Specifically, the weight of the indoor unit 100 is set as W1, the weight of the outdoor unit 200 is set as W2, the distance between the indoor unit 100 and the wall 610 is set as L1, the distance between the outdoor unit 200 and the wall 610 is set as L2, and the strain of the refrigerant pipeline is set as ε.

[0087] In the unstretched state, the saddle bridge structure 300 has L1+L2=Y min In the fully stretched state, the saddle bridge structure 300 has L1+L2=Y max Depending on the model of the window unit, Y min and Y max For known data, in this embodiment, the saddle bridge structure 300 has L1+L2=240mm when not stretched, and L1+L2=400mm when fully stretched.

[0088] The theoretical upper limit of the strain ε of the refrigerant piping is denoted as ε. max1 For specific refrigerant piping models, the data is known; for example, in this embodiment, ε max1 =280μs, then the strain coefficient a = ε max1 / (W2 / L1+W1 / L2).

[0089] Substituting the strain coefficient 'a' back into the formula ε=a×(W2 / L1+W1 / L2), the actual upper limit value ε of the strain variable ε is calculated. max2 and the dependent variable takes ε max2 The corresponding L1 and L2.

[0090] Where, ε max2 This represents the actual upper limit of the strain ε in the refrigerant piping. max2 <ε max1 In actual use, the actual strain of the refrigerant piping in a window air conditioner needs to be less than ε. max2 If the actual dependent variable exceeds ε max2 If this happens, there is a risk of refrigerant pipes breaking or leaking.

[0091] In the unstretched state of the saddle bridge structure (300), L2 = Y min -L1; Under the fully stretched state of the saddle bridge structure at 300°, L2=Y max -L1, which determines the specific installation position of the window unit in the unstretched and fully stretched states respectively.

[0092] In step 3, the refrigerant piping strain of the saddle structure 300 needs to be tested in both the unstretched and fully stretched states. For each window unit installation state, the refrigerant piping strain needs to be tested in the three operating states of the window unit: start-up, operation, and shutdown. The refrigerant piping strain ε in all states must not exceed the actual limit value ε. max2 If the value exceeds a certain threshold, the refrigerant piping test will fail, posing a safety risk.

[0093] In the unstretched state, the saddle bridge structure 300 is calculated based on the strain ε. max2 The corresponding L1 and L2 will install the window unit onto the wall 610, where L2 = Y min -L1, to test the refrigerant piping strain of the window unit under three working states: start-up, operation, and shutdown.

[0094] Under full tension, the saddle bridge structure 300 is subjected to strain ε. max2 The corresponding L1 and L2 will install the window unit onto the wall 610, where L2 = Y max -L1, to test the refrigerant piping strain of the window unit under three working states: start-up, operation, and shutdown.

[0095] The stress testing method for saddle-type window air conditioners in this application can simulate the maximum strain of refrigerant pipelines as closely as possible according to the actual usage scenarios of the window air conditioner. It can test the strain of the window air conditioner under the most unfavorable conditions, ensuring the accuracy and reliability of pipeline stress testing, improving the safety of pipelines during actual use of the window air conditioner, and effectively avoiding situations where excessive stress in the refrigerant pipelines leads to pipeline breakage and refrigerant leakage in different installation and usage conditions of the window air conditioner.

[0096] In some embodiments of this application, when the window unit is subjected to stress testing in three states—start-up, operation, and shutdown—the strain of the refrigerant pipeline under rated voltage Ue, rated voltage Ue-u1, and rated voltage Ue+u2 is tested in each state, further improving the accuracy and reliability of the pipeline test.

[0097] u1 and u2 can be 10% of the rated voltage Ue, that is, to test the refrigerant piping strain of the window unit at rated voltage Ue, 90% of the rated voltage, and 110% of the rated voltage, respectively.

[0098] In some embodiments of this application, when the window unit is in the start-up working state and the refrigerant pipeline stress test is performed, the refrigerant pipeline strain is tested within a time period t1 after the compressor reaches the rated frequency. For example, t1 can be 40s.

[0099] In some embodiments of this application, when the window unit is in operation and the refrigerant pipeline stress test is performed, the refrigerant pipeline strain is tested within a time period t2 after the compressor has been running stably. For example, t2 can be 180s.

[0100] In some embodiments of this application, when the refrigerant pipeline stress test is performed on the window unit in the shutdown working state, the refrigerant pipeline strain during the time period t3 before the window unit is turned off and the time period t4 after the window unit is turned off is tested. For example, t3 can be 20s and t4 can be 60s.

[0101] In some embodiments of this application, after the window unit is installed on the test bench 600 and before the pipeline test is performed, it is necessary to measure the horizontal state of the window unit with a spirit level to ensure that the tilt angle of the window unit in any direction does not exceed 1 degree. Adjusting the horizontal state by raising the underside of the saddle bridge and fine-tuning the hand-tightened bolts on the back panel of the outdoor unit helps to improve the accuracy of the pipeline test.

[0102] [Refrigerant piping setup]

[0103] In some embodiments of this application, the refrigerant piping includes a return gas pipe assembly 500, as shown in the reference. Figure 14 The return gas pipe assembly 500 includes a first return gas pipe section 510, a second return gas pipe section 520, and a third return gas pipe section 530 connected in sequence. The first return gas pipe section 510 is connected to the indoor heat exchanger, the third return gas pipe section 530 is connected to the compressor 220 located in the outdoor unit, and the second return gas pipe section 520 has a U-shaped structure and is located in the inner cavity of the saddle structure 300.

[0104] The three-section structure of the return air pipe assembly 500 facilitates processing and improves the manufacturing process. When the saddle structure 300 is stretched, the U-shaped second return air pipe section 520 provides a certain amount of buffering for the pipe stretching, thus satisfying the expansion and contraction function of the saddle structure 300.

[0105] The first return air pipe section 510 has a bend near its end (in... Figure 14 The third return gas pipe section 530 (marked as c1) is connected to the indoor heat exchanger, and has a bend near its end (in... Figure 14 The part marked c2 is connected to the compressor 220, and the bending parts c1 and c2 are stress test points.

[0106] In some embodiments of this application, the U-shaped structure of the second return air pipe section 520 is a semi-circular structure. When the whole machine is running, the vibration of the pipe is actually the transmission of force. When the semi-circular structure of the second return air pipe section 520 is subjected to force, the forces on the arc structure will cancel each other out during transmission, thus playing a role in shock absorption. At the same time, the arc shape of the pipe design, compared with the square or similar square pipe shape, requires less pipe in the same space, which reduces the pipe cost to a certain extent.

[0107] In some embodiments of this application, reference is made to Figure 13 An electrical box 400 is provided in the inner cavity of the saddle bridge structure 300. The second return air pipe section 520 passes through the gap between the electrical box 400 and the inner cavity side wall of the saddle bridge structure 300, and horizontally surrounds one side of the electrical box 400, making full use of the internal space of the saddle bridge structure 300 to realize pipe routing.

[0108] The electrical box 400 is located within the space enclosed by the U-shaped structure of the second return air pipe section 520. When the saddle bridge structure 300 is stretched, there is enough leeway on both sides of the electrical box 400 to ensure that the pipe does not come into contact with the electrical box 400 during the pulling process.

[0109] In some embodiments of this application, a spring 540 is fitted on the second return air pipe section 520 to prevent the second return air pipe section 520 from being flattened or collapsed during the stretching process.

[0110] The outer periphery of the second return gas pipe section 520 is covered with a heat insulation sleeve (not shown). The heat insulation sleeve covers the outer periphery of the spring 540 to prevent condensation from forming on the second return gas pipe section 520 and flowing into the electrical box 400.

[0111] In some embodiments of this application, the third return gas pipeline section 530 includes a third return gas pipeline section 531, a third return gas pipeline U-shaped section 532, and a third return gas pipeline section 533 connected in sequence. The opening of the third return gas pipeline U-shaped section 532 faces upward. The third return gas pipeline section 531 is connected to the second return gas pipeline section 520, and the third return gas pipeline section 533 is connected to the suction port of the compressor 220.

[0112] The U-shaped section 532 of the third return gas pipeline plays an auxiliary role in stretching deformation, and can bear a small part of the tensile force, thus acting as a buffer to avoid the compressor being subjected to a lateral force after being directly connected to the compressor 220, which would affect the compressor's performance and vibration.

[0113] At the bottom bend of the U-shaped section 532 of the third return air pipeline (at... Figure 14 The point marked as c3 is the stress test point.

[0114] [Saddle Bridge Structure]

[0115] In some embodiments of this application, reference is made to Figure 4 and Figure 5 The saddle bridge structure 300 includes an inner saddle bridge shell 310 and an outer saddle bridge shell 320. The outer saddle bridge shell 320 is sleeved on the outside of the inner saddle bridge shell 310. The inner saddle bridge shell 310 and the outer saddle bridge shell 320 can move relative to each other to realize the expansion and contraction of the saddle bridge structure 300. The refrigerant pipeline passes through the inner saddle bridge shell 310.

[0116] One end of the inner saddle housing 310 is connected to one of the indoor unit 100 and the outdoor unit 200, and one end of the outer saddle housing 320 is connected to the other of the indoor unit 100 and the outdoor unit 200, so as to connect the indoor unit 100 and the outdoor unit 200 together through the saddle structure 300.

[0117] Figures 7 to 9 The diagram shown is a structural schematic of the inner saddle axle housing 310. Figures 10 to 12 The diagram shown is a structural schematic of the outer saddle axle housing 320. Figures 2 to 5 In the structure shown, the inner saddle housing 310 is connected to the indoor unit 100, and the outer saddle housing 320 is connected to the outdoor unit 200.

[0118] In some embodiments of this application, a sliding portion is provided between the inner saddle axle housing 310 and the outer saddle axle housing 320 to make the sliding movement between the inner saddle axle housing 310 and the outer saddle axle housing 320 more reliable and smooth. The sliding portion can be a slide rail structure, or a slide channel, slider structure, etc. provided between the two.

[0119] In some embodiments of this application, the inner saddle housing 310 and the outer saddle housing 320 each have a downwardly extending vertical portion, which constitutes the rear panel of the indoor unit 100 and the outdoor unit 200.

[0120] The saddle bridge structure 300 is fixedly connected to the indoor unit 100 and the outdoor unit 200 through two vertical parts, which helps to improve the structural stability of the indoor unit 100, the outdoor unit 200 and the saddle bridge structure 300.

[0121] The saddle structure 300 can support part of the weight of the indoor unit 100 and the outdoor unit 200. By transferring the weight to the window through the saddle structure 300, the safety of the saddle-type air conditioner after installation is improved and the risk of falling is reduced.

[0122] In some embodiments of this application, reference is made to Figure 4 and Figure 5 The saddle bridge structure 300 also includes a saddle bridge cover 330. When the inner saddle bridge cover 310 and the outer saddle bridge cover 320 move away from each other, the saddle bridge cover 330 will cover the exposed inner saddle bridge cover 310.

[0123] In some embodiments of this application, reference is made to Figure 2The outdoor unit 200 has an adjustment bolt 210 on its rear panel. After placing the window unit on the window and adjusting the saddle structure 300 to the corresponding length position, the adjustment bolt 210 is turned so that it abuts against the outdoor side wall, further improving the stability of the window unit installation.

[0124] [Saddle Bridge Structure - Inner Saddle Bridge Shell]

[0125] Regarding the specific structure of the inner saddle axle housing 310, in some embodiments of this application, refer to... Figures 7 to 10 The inner saddle axle housing 310 includes an inner saddle axle L-shaped base plate 311 and an inner saddle axle cover plate 312. The inner saddle axle cover plate 312 is located on the top of the transverse portion 3111 of the inner saddle axle L-shaped base plate, forming a first through cavity 313.

[0126] The vertical part 3112 of the inner saddle bridge L-shaped base plate forms the rear panel of the indoor unit 100, and the vertical part 3112 of the inner saddle bridge L-shaped base plate is fixedly connected to the base plate of the indoor unit 100.

[0127] An inner saddle bridge reinforcing plate 314 is provided at the junction of the horizontal part 3111 and the vertical part 3112 of the inner saddle bridge L-shaped base plate to further improve the structural strength of the inner saddle bridge L-shaped base plate 3111.

[0128] [Saddle Bridge Structure - Outer Saddle Bridge Shell]

[0129] Regarding the specific structure of the outer saddle axle housing 320, in some embodiments of this application, refer to... Figures 10 to 12 The outer saddle axle housing 320 includes an outer saddle axle L-shaped base plate 321 and an outer saddle axle cover plate 322. The outer saddle axle cover plate 322 is located on the top of the transverse portion 3221 of the outer saddle axle L-shaped base plate, forming a second through cavity 323.

[0130] The vertical part 3212 of the L-shaped base plate of the outer saddle bridge forms the rear panel of the outdoor unit 200, and the vertical part 3212 of the L-shaped base plate of the outer saddle bridge is fixedly connected to the base plate of the outdoor unit 200.

[0131] An outer saddle bridge reinforcing plate 324 is provided at the junction of the horizontal part 3221 and the vertical part 3222 of the outer saddle bridge L-shaped base plate to further improve the structural strength of the outer saddle bridge L-shaped base plate 321.

[0132] [Saddle Bridge Structure - Saddle Bridge Cover]

[0133] Regarding the specific structure of the bridge cover 330, in some embodiments of this application, refer to... Figure 6 The saddle bridge cover 330 includes a top plate 331 and a side plate 332. The top plate 331 covers the top of the saddle bridge structure 300, and the side plate 332 covers the sides of the saddle bridge structure 300.

[0134] The saddle axle cover side panel 332 has an L-shaped structure. The horizontal part 3321 of the saddle axle cover side panel covers the side of the saddle axle structure 300. The vertical part 3322 of the saddle axle cover side panel is fixedly connected to the side panel of the indoor unit 100, forming part of the side of the indoor unit 100, and at the same time realizing the fixed installation of the saddle axle cover 330 on the indoor unit 100.

[0135] In some embodiments of this application, reference is made to Figure 3 and Figure 5 The transverse portion 3321 of the saddle axle cover side plate is provided with a protrusion 333 protruding inward. The protrusion 333 is fixedly connected to the outer saddle axle cover 320 by a connector (such as a screw), so as to realize the positioning of the inner saddle axle cover 310 and the outer saddle axle cover 320 after relative movement to the required position.

[0136] After the saddle bridge structure 300 is stretched into place, screws are driven into the left and right side walls of the saddle bridge cover 330 to fix the left and right side walls of the saddle bridge cover 330 to the left and right side walls of the outer saddle bridge cover 320. The saddle bridge cover 330 and the outer saddle bridge cover 320 are fixedly connected. Since the inner saddle bridge cover 310 and the saddle bridge cover 330 are fixedly connected to the indoor unit 100, and the outer saddle bridge cover 320 is fixedly connected to the outdoor unit 200, the saddle bridge structure 300 is fixedly fixed at the fixed position.

[0137] The protrusion 333 creates a recess on the outer surface of the saddle cover 330, allowing the screw to be embedded in the recessed structure, thus preventing the outer end face of the screw from protruding out of the saddle cover 330 and scratching the user.

[0138] [Electrical Box Installation]

[0139] In some embodiments of this application, reference is made to Figure 13 An electrical box 400 is provided in the inner cavity of the inner saddle axle housing 310. The electrical box 400 is set against one side wall of the inner saddle axle housing 310. There is a gap between the electrical box 400 and the other side wall of the inner saddle axle housing 310 for the passage of heat exchange pipes (referring to return gas pipe group and subcooling pipe group) and drainage pipes.

[0140] The placement of the electrical box 400 makes full use of the internal space of the saddle bridge structure 300, making the overall structure more compact.

[0141] The electrical box 400 is set against one side of the through cavity, and a gap is formed between the electrical box 400 and the other side of the through cavity for the heat exchange pipes and drainage pipes of the air conditioner. The drainage pipes and heat exchange pipes extend from one side of the electrical box 400, making the internal structure of the saddle structure 300 more regular and compact.

[0142] In this embodiment, the saddle bridge structure 300 not only connects the indoor unit 100 and the outdoor unit 00, but also serves to install the electrical box 400, run pipes, and route cables. It integrates multiple functions and has a more compact structure.

[0143] In some embodiments of this application, one side of the electrical box 400 has an inclined wall 410, which is inclined in the vertical plane to avoid the heat exchange pipes and drainage pipes when the saddle bridge structure 300 extends and retracts, so as to avoid interference with the heat exchange pipes and drainage pipes when the saddle bridge structure 300 extends and retracts.

[0144] In some embodiments of this application, the electrical box 400 is fixedly mounted on the transverse portion 3111 of the L-shaped base plate of the inner saddle bridge. The top of the electrical box 400 is open to facilitate the installation of internal electrical components. The top opening of the electrical box 400 is sealed by the inner saddle bridge cover plate 312.

[0145] In some embodiments of this application, a buffer sealing part 315 is provided at the position where the electrical box 400 contacts the inner wall of the cavity that forms the saddle bridge structure 300. The buffer sealing part 315 serves to reduce vibration and prevents condensation on the inner wall of the saddle bridge structure 300 from dripping into the interior of the electrical box 400, thereby improving the waterproof performance of the electrical box 400.

[0146] As a specific embodiment, refer to Figure 9 The inner side of the inner saddle bridge cover plate 312 is provided with a buffer sealing part 315. The sealing buffer part 315 fits and seals against the top of the electrical box 400, and completely covers the top opening of the electrical box 400.

[0147] The open top structure of the electrical box 400 facilitates the installation of electrical components inside the electrical box 400. The inner wall of the saddle structure 300 (specifically the inner saddle cover plate 312) serves as the top cover of the electrical box 400, simplifying the structure and reducing costs.

[0148] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0149] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for testing piping stress applied to a saddle-type window machine, characterized by, Comprise: The saddle type window machine comprises an indoor unit, an outdoor unit, and a saddle bridge structure connecting the indoor unit and the outdoor unit, the saddle bridge structure can be telescopic to adjust the distance between the indoor unit and the outdoor unit, and the refrigerant pipeline passes through the saddle bridge structure; The weight of the indoor unit is W1, and the weight of the outdoor unit is W2; The experimental table for carrying out window stress test is provided with a wall body, the distance between the indoor unit and the wall body is set as L1, the distance between the outdoor unit and the wall body is set as L2, L1+L2=Y in the non-stretching state of the saddle bridge structure min , L1+L2=Y in the fully stretching state of the saddle bridge structure max , Y min and Y max are known data; The stress test method of the refrigerant pipeline comprises: Determine the test point, determine the stress test point of the refrigerant pipeline by simulation, and arrange a sensor at the stress test point; determining the installation position of the window machine on the wall body, the strain of the refrigerant pipeline being ε, the theoretical upper limit value of the strain ε being ε max1 The strain coefficient a=ε is known data max1 The actual upper limit value of the strain ε is calculated according to the formula ε=a×(W2 / L1+W1 / L2) max2 , and the corresponding L1 and L2 when the strain takes ε max2 ​ The strain of the refrigerant pipe of the saddle bridge structure in the non-stretched state is tested, and the L1 and L2 corresponding to the strain ε are taken as ε max2 The window unit is installed on the wall body, and the strain of the refrigerant pipe of the window unit in the starting, running and stopping states is tested. The stress of the refrigerant pipe of the saddle bridge structure in the fully stretched state is tested, and the L1 and L2 corresponding to the strain ε are taken at the time of ε max2 The window unit is installed on the wall body according to the L1 and L2, and the strain of the refrigerant pipe of the window unit in the three working states of starting, running and stopping is tested.

2. The pipeline stress test method applied to the saddle type window machine according to claim 1, wherein, When the window machine is in the starting, running and stopping states, the refrigerant pipeline strain in the rated voltage Ue, the rated voltage Ue-u1 and the rated voltage Ue+u2 is tested respectively in each state, and u1 and u2 are 10% of the rated voltage Ue.

3. The pipeline stress test method applied to the saddle type window machine according to claim 1, wherein, When the window machine is in the starting state, the refrigerant pipeline strain in the time period t1 after the compressor reaches the rated frequency is tested.

4. The pipeline stress test method applied to the saddle type window machine according to claim 1, wherein, When the window machine is in the running state, the refrigerant pipeline strain in the time period t2 after the compressor is in stable operation is tested.

5. The pipeline stress test method applied to the saddle type window machine according to claim 1, wherein, When the window machine is in the stopping state, the refrigerant pipeline strain in the time period t3 before the window machine is turned off and the time period t4 after the window machine is turned off is tested.

6. The pipeline stress test method applied to the saddle type window machine according to any one of claims 1 to 5, wherein, The refrigerant pipeline comprises a return gas pipe group, and the return gas pipe group comprises a first return gas pipe section, a second return gas pipe section and a third return gas pipe section which are sequentially connected; The first return gas pipe section is connected with the indoor heat exchanger, the third return gas pipe section is connected with the compressor arranged in the outdoor unit, and the second return gas pipe section is in a U-shaped structure and located in the inner cavity of the saddle bridge structure; The first return gas pipe section is provided with a bending part at a position close to the end thereof to be connected with the indoor heat exchanger, the third return gas pipe section is provided with a bending part at a position close to the end thereof to be connected with the compressor, and the bending part is a stress test point.

7. The pipeline stress test method applied to the saddle type window machine according to claim 6, wherein, The third return gas pipe section comprises a third return gas pipe section one, a third return gas pipe U-shaped section and a third return gas pipe section two which are sequentially connected, the third return gas pipe U-shaped section has an upward opening, the third return gas pipe section one is connected with the second return gas pipe section, and the third return gas pipe section two is connected with the suction port of the compressor; The bottom bending part of the third return gas pipe U-shaped section is a stress test point.

8. A sash window machine characterised in that The air conditioner comprises an indoor unit, an outdoor unit, and a saddle bridge structure connecting the indoor unit and the outdoor unit, wherein the saddle bridge structure comprises: an outer saddle bridge shell fixedly connected with one of the indoor unit and the outdoor unit; an inner saddle bridge shell fixedly connected with the other of the indoor unit and the outdoor unit, the outer saddle bridge shell being sleeved outside the inner saddle bridge shell, and the outer saddle bridge shell being movable relative to the inner saddle bridge shell; a refrigerant pipeline passing through the inner saddle bridge shell, and before the window air conditioner is shipped, the refrigerant pipeline is subjected to stress test by using the pipeline stress test method according to any one of claims 1 to 7.

9. The saddle window air conditioner according to claim 8, wherein an electric appliance box is arranged in the inner cavity of the inner saddle bridge shell, the electric appliance box is arranged against one side wall of the inner saddle bridge shell, and a gap for the refrigerant pipeline to pass through is formed between the electric appliance box and the other side wall of the inner saddle bridge shell.

10. The saddle window air conditioner according to claim 9, wherein the part of the refrigerant pipeline located in the inner cavity of the inner saddle bridge shell has a U-shaped bending part, and the electric appliance box is located in the area surrounded by the U-shaped bending part.

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