Air conditioner and air conditioner indoor unit

Abstract

The utility model provides an air conditioner and an air conditioner indoor unit. The air conditioner indoor unit comprises a machine shell; the framework is mounted in the machine shell; the indoor heat exchanger is mounted on the framework; wherein the indoor heat exchanger is provided with a liquid inlet and outlet pipe, the liquid inlet and outlet pipe is used for being connected with the machine connecting pipe, and the framework is provided with an anti-shaking enclosure used for containing and protecting the machine connecting pipe. The connecting pipe has the advantages that the connecting pipe can be prevented from being excessively extruded or distorted, and leakage of refrigerants can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning installation, and in particular to an air conditioner and an indoor unit of an air conditioner. Background Technology

[0002] In modern home decoration, built-in air conditioners are highly favored for their space-saving design, elegant appearance, and perfect integration with interior décor. However, the installation of built-in air conditioners presents a technical challenge in terms of the arrangement and fixing of the connecting pipes (the pipes connecting the indoor and outdoor units). This is especially true when cabinets or other furniture are present, making the insertion of the connecting pipes particularly complex.

[0003] Traditional pipe installation methods often overlook the impact of obstructions such as cabinets on the pipes. During installation, the pipes need to pass through pre-drilled holes or gaps in the cabinet to connect to the outdoor unit. However, due to the structural and dimensional limitations of the cabinet, the pipes are often subjected to excessive compression or twisting during insertion, leading to pipe deformation. This deformation not only affects the fluid transfer efficiency of the pipes but also creates additional stress at the pipe joints, causing refrigerant leaks. Utility Model Content

[0004] One objective of this utility model is to overcome at least one defect in the prior art and provide an air conditioner and an indoor air conditioner unit.

[0005] Another objective of this invention is to avoid excessive compression or twisting of the connecting pipes, thereby preventing refrigerant leakage.

[0006] Another objective of this invention is to reduce the amount of shaking in the connecting pipe.

[0007] Specifically, according to a first aspect of the present invention, the present invention provides an indoor unit for an air conditioner, comprising:

[0008] chassis;

[0009] The frame is installed inside the housing; and

[0010] An indoor heat exchanger is installed on the frame.

[0011] The indoor heat exchanger has inlet and outlet liquid pipes for connecting to the connecting pipe, and the frame has anti-sway barriers for accommodating and protecting the connecting pipe.

[0012] Optionally, a pipe outlet space is formed between one side of the frame and the housing, and a pipe connector is provided at the end of the inlet / outlet pipe. The inlet / outlet pipe extends downward from the pipe outlet space, such that the height of the pipe connector from the lower edge of the frame is 0.45 to 0.75 of the frame height.

[0013] Optionally, the anti-sway barrier is located below the outlet pipe space, and the pipe joints of the inlet and outlet pipes are located inside the anti-sway barrier.

[0014] Optionally, a movable gap is left around the pipe joint and the anti-sway barrier.

[0015] Optionally, the anti-sway barrier includes a front baffle, a left baffle, a rear baffle, and a right baffle connected in sequence;

[0016] The front baffle is fixedly connected to the left baffle and the right baffle on both sides, and the rear baffle is detachably connected to the left baffle and the right baffle on both sides.

[0017] Optionally, the front baffle, the left baffle, and the right baffle are integrally formed with the frame.

[0018] Optionally, the right baffle is fixedly connected to the housing.

[0019] Optionally, the inlet and outlet pipes include an inlet pipe and an outlet pipe, and the pipe fittings include a first pipe fitting for the inlet pipe and a second pipe fitting for the outlet pipe.

[0020] Optionally, the diameter of the inlet pipe is larger than the diameter of the outlet pipe.

[0021] According to a second aspect of the present invention, an air conditioner is provided, comprising:

[0022] The outdoor unit of the air conditioner has an outdoor heat exchanger; and

[0023] In any one of the above-mentioned air conditioning indoor units, the indoor heat exchanger is connected to the outdoor heat exchanger via a connecting pipe.

[0024] The indoor unit of this air conditioner features an anti-sway enclosure that accommodates and protects the connecting pipes. During installation, when the inlet / outlet refrigerant pipes are connected to the connecting pipes, the anti-sway enclosure provides a relatively fixed space for the connecting pipes, effectively limiting their movement. This ensures that the connecting pipes are not subjected to excessive twisting or compression due to external forces or vibrations during installation and subsequent use. Consequently, refrigerant leakage and other potential malfunctions caused by pipe deformation are avoided, significantly improving the stability and safety of the indoor air conditioner unit.

[0025] Furthermore, in the indoor unit of this invention, the height of the pipe joints of the inlet and outlet liquid pipes from the lower edge of the frame is 0.45 to 0.75 times the height of the frame. By setting the installation height of the pipe joints within the above range, the amount of shaking of the connecting pipes during installation and operation can be reduced, significantly improving the overall stability of the connecting pipes and the inlet and outlet liquid pipes. This reduces the risk of refrigerant leakage caused by shaking, further enhancing the reliability and durability of the indoor unit.

[0026] Furthermore, in this utility model, the air conditioner indoor unit has a front baffle, left baffle, rear baffle, and right baffle connected sequentially to form a stable space. The rear baffle is detachably connected to the left and right baffles on both sides. This detachable design of the rear baffle allows technicians easy access to the connection areas of the inlet / outlet liquid pipes and connecting pipes for necessary inspection, repair, or replacement, improving the convenience and efficiency of maintenance.

[0027] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1 This is a schematic diagram showing an air conditioner indoor unit embedded in a cabinet according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic structural diagram of an indoor air conditioner unit with the air inlet closed, according to an embodiment of the present invention.

[0031] Figure 3 This is a schematic structural diagram of an indoor air conditioner unit with the air inlet in the open state according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic exploded view of the rear housing and front frame according to an embodiment of the present invention;

[0033] Figure 5 This is a schematic cross-sectional view of an indoor air conditioner unit according to an embodiment of the present utility model;

[0034] Figure 6 This is a schematic rear view of an indoor air conditioner unit according to an embodiment of the present utility model;

[0035] Figure 7 yes Figure 6 A schematic structural diagram of the concealed rear panel of the indoor unit of an air conditioner;

[0036] Figure 8 This is a schematic top view of the frame and indoor heat exchanger according to an embodiment of the present invention;

[0037] Figure 9 This is a schematic structural block diagram of an air conditioner according to an embodiment of the present utility model.

[0038] Figure label:

[0039] 10. Indoor unit of air conditioner; 100. Casing; 101. Air inlet; 102. Air outlet; 103. Pipe outlet space; 110. Rear casing; 120. Front frame; 121. Main frame; 122. Front panel; 130. Frame; 131. Anti-sway barrier; 131a. Front baffle; 131b. Left baffle; 131c. Rear baffle; 131d. Right baffle; 140. Indoor heat exchanger; 141. Inlet and outlet pipes; 141a. Inlet pipe; 141b. Outlet pipe; 142. Pipe connector; 142a. First pipe connector; 142b. Second pipe connector; 150. Cross-flow fan; 20. Outdoor unit; 210. Outdoor heat exchanger; 30. Connecting pipe; 40. Cabinet. Detailed Implementation

[0040] 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 protection scope of the present utility model.

[0041] It should be noted that all directional indicators (such as up, down, left, right, forward, backward, etc.) in the embodiments of this utility model are only used to interpret a specific posture (as shown in the attached diagram). Figure 7 The relative positions and movements of the components shown below are considered. If the specific posture changes, the directional indication will also change accordingly.

[0042] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Figure 1 This is a schematic diagram showing an air conditioner indoor unit 10 embedded in a cabinet 40 according to an embodiment of the present invention. Figure 2 This is a schematic structural diagram of an indoor air conditioning unit 10 with the air inlet 101 in a closed state according to an embodiment of the present invention. Figure 3 This is a schematic structural diagram of an indoor air conditioning unit 10 with the air inlet 101 in an open state, according to an embodiment of the present utility model.

[0045] like Figure 1 and Figure 3 As shown, the indoor unit 10 of the air conditioner mainly includes a casing 100, a frame 130, and an indoor heat exchanger 140.

[0046] The housing 100 can accommodate different components used for the operation of the indoor unit, including the frame 130, the indoor heat exchanger 140, and the air supply fan. The front of the housing 100 has an air inlet 101 and an air outlet 102, with the air inlet 101 located above the air outlet 102. This layout allows the indoor unit to draw air in from the upper front and exhaust air from the lower front.

[0047] When the indoor unit needs to be installed in a space-constrained area such as a cabinet 40, the front-to-top air intake and front-to-bottom air exhaust configuration demonstrates its unique advantages. Since both the air intake 101 and the air outlet 102 are located on the front side of the casing 100 and are not restricted by the top and bottom panels of the cabinet 40, there is no need to worry about airflow obstruction or insufficient space, which greatly improves the installation flexibility and adaptability of the indoor unit.

[0048] The housing 100 can be rectangular in shape, with both the air inlet 101 and the air outlet 102 being elongated openings extending laterally along the housing 100. This design maximizes the use of the front space of the housing 100, allowing the air inlet 101 and air outlet 102 to occupy a larger area, thereby improving airflow efficiency. Furthermore, the elongated openings also facilitate even air distribution, preventing issues such as excessively high or low airflow in localized areas.

[0049] A frame 130 is installed inside the housing 100. A heat exchange duct extending laterally is formed on the frame 130, having an inlet side open towards the air inlet 101 and an outlet side open towards the air outlet 102. An indoor heat exchanger 140 is installed on the frame 130 and covers the heat exchange duct to exchange heat with air drawn into the housing 100 from the air inlet 101. A blower fan is disposed within the heat exchange duct to exhaust the heat-exchanged air into the room through the outlet side of the frame 130 and the air outlet 102 of the housing 100, thereby achieving cooling or heating of the indoor environment.

[0050] In an alternative embodiment, the housing 100 may consist of two parts, a rear housing 110 and a front frame 120. The front side of the rear housing 110 is open and has an internal accommodating space. The front frame 120 is detachably connected to the rear housing 110 and is used to cover the open side of the rear housing 110.

[0051] The frame 130, heat exchanger, and cross-flow fan 150 are housed inside the rear housing 110. Since the front of the rear housing 110 is open, when the indoor unit 10 of the air conditioner malfunctions, the exposed components can be directly inspected and repaired by removing the front frame 120, which improves the convenience of maintenance.

[0052] Figure 4 This is a schematic exploded view of the rear housing 110 and the front frame 120 according to an embodiment of the present invention, as shown below. Figure 4 As shown, the front frame 120 may include a main frame 121 and a front panel 122. The upper part of the main frame 121 is provided with the aforementioned air inlet 101, and the lower part is provided with the aforementioned air outlet 102. The lower end of the front panel 122 is pivotally mounted on the main frame 121 and configured to be controlled to rotate up and down around the pivot point to open and close the air inlet 101.

[0053] During the use of the indoor unit 10 of the air conditioner, if the airflow between the air inlet 101 and the air outlet 102 is not properly isolated and guided, there may be vertical airflow, that is, cold air and hot air mix inside the casing 100, which will reduce the heat exchange efficiency and even affect the uniformity of the indoor temperature.

[0054] In this embodiment, after the front panel 122 is flipped forward and opened, the front panel 122 can act as a barrier to guide airflow, ensuring that the cold or hot air entering from the air inlet 101 can flow along a predetermined path, exchange heat through the heat exchanger, and then be discharged from the air outlet 102. At the same time, the front panel 122 can also prevent the air discharged from the air outlet 102 from flowing directly back to the air inlet 101, effectively avoiding the problem of vertical airflow.

[0055] Figure 6This is a schematic rear view of an air conditioner indoor unit 10 according to an embodiment of the present invention. Figure 7 yes Figure 6 A schematic structural diagram of the concealed rear panel 131c of the indoor unit 10 of the air conditioner. Figure 8 This is a schematic top view of the frame 130 and the indoor heat exchanger 140 according to an embodiment of the present invention.

[0056] The indoor heat exchanger 140, as the core component of the indoor unit 10 of the air conditioner, is mainly responsible for the heat exchange between the indoor environment and the circulating air. The indoor heat exchanger 140 has inlet and outlet liquid pipes 141, which are used to connect to the connecting pipe 30, thereby connecting the indoor heat exchanger 140 to the outdoor heat exchanger 210. Refrigerant originates from the outdoor heat exchanger 210 of the outdoor unit 20, is transported to the indoor heat exchanger 140 via the connecting pipe 30, and after heat exchange is completed in the indoor heat exchanger 140, it is transported back to the outdoor heat exchanger 210 via the connecting pipe 30.

[0057] In particular, to ensure the stability and safety of the connecting pipe 30 during installation and operation, the frame 130 of this embodiment has an anti-sway barrier 131, which is used to accommodate and protect the connecting pipe 30.

[0058] With the above structure, during installation, when the inlet / outlet liquid pipe 141 is connected to the connecting pipe 30, the anti-sway barrier 131 provides a relatively fixed space for the connecting pipe 30, effectively limiting the movement of the connecting pipe 30. This ensures that the connecting pipe 30 will not be excessively twisted or squeezed due to external forces or vibrations during installation and subsequent use. Thus, refrigerant leakage and other potential malfunctions caused by pipe deformation can be avoided, significantly improving the stability and safety of the air conditioning indoor unit 10.

[0059] In an optional embodiment, a pipe outlet space 103 is formed between one side of the frame 130 and the housing 100. A pipe connector 142 is provided at the end of the inlet / outlet pipe 141. The inlet / outlet pipe 141 extends downward from the pipe outlet space 103, such that the height of the pipe connector 142 from the lower edge of the frame 130 is 0.45 to 0.75 of the height of the frame 130, for example, 0.45, 0.5, 0.6, 0.7, 0.75, etc.

[0060] Specifically, the right side of the frame 130 can form a pipe outlet space 103 between it and the housing 100. When the height of the frame 130 is 100cm, the height of the pipe connector 142 from the lower edge of the frame 130 should be between 45cm and 75cm.

[0061] By adopting the above structure and setting the installation height of the pipe connector 142 within the aforementioned range, the amount of shaking of the connecting pipe 30 during installation and operation can be reduced. In actual installation scenarios, when installers connect the connecting pipe 30 to the inlet / outlet liquid pipes 141, a suitable height of the pipe connector 142 ensures that the connecting pipe 30 maintains a relatively stable state after connection, reducing shaking caused by improper positioning. During air conditioning operation, the refrigerant flowing within the pipes generates a certain impact force, which can easily cause the connecting pipe 30 to shake. At this time, a pipe connector 142 of appropriate height significantly improves the overall stability of the connecting pipe 30 and the inlet / outlet liquid pipes 141, thereby effectively reducing the risk of refrigerant leakage caused by shaking, further enhancing the reliability and durability of the air conditioning indoor unit 10, and providing users with a more stable and durable user experience.

[0062] Specifically, the height of the pipe connector 142 is designed to be positioned close to the middle of the pipe outlet side of the frame 130, resulting in shorter inlet and outlet liquid pipes 141. In this position, the amount of swaying generated by the connecting pipe 30 during installation and operation can be effectively controlled to a minimum. Furthermore, this position offers multiple advantages: it not only provides excellent protection for the connecting pipe 30, reducing the risk of damage due to external impacts or improper operation, but also, due to its flexible, central location, it can adapt well to various complex pipe outlet requirements, significantly improving the applicability and reliability of the air conditioning indoor unit 10 in different installation scenarios.

[0063] In an alternative embodiment, the anti-sway barrier 131 is located below the outlet pipe space 103, and the pipe joint 142 of the inlet / outlet pipe 141 is located inside the anti-sway barrier 131.

[0064] In this way, the anti-sway enclosure 131 can directly protect the connection between the connecting pipe 30 and the inlet / outlet liquid pipe 141, avoiding the problem of refrigerant leakage caused by excessive shaking at the joint of the connecting pipe 30 during installation.

[0065] During installation, when workers connect the connecting pipe 30 to the inlet / outlet pipe 141, the joint 142 of the connecting pipe 30 may inevitably shake due to careless operation. The anti-sway barrier 131 effectively limits this shaking range, preventing damage to the connection seal due to excessive shaking, which could lead to refrigerant leakage.

[0066] It is worth noting that in this utility model, the function of the anti-sway barrier 131 is not to permanently fix the connection between the inlet / outlet pipe 141 and the connecting pipe 30. On the contrary, a movable gap is intentionally reserved around the pipe joint 142 of the inlet / outlet pipe 141 and the anti-sway barrier 131.

[0067] This is because, during air conditioner operation, the refrigerant flows at high speed within the pipes, causing slight vibrations. If the connections are completely fixed, these frequent vibrations will continuously act on the pipes, potentially leading to pipe fatigue and damage over time, thus reducing their lifespan. Allowing for a movable gap allows the pipe joint 142 to move flexibly within a certain range, effectively buffering the stress caused by vibrations. It also helps limit large-scale swaying with the anti-sway barrier 131, preventing loosening and wear at the connections due to excessive swaying. This ensures stable refrigerant delivery and significantly extends the pipe's lifespan.

[0068] In one optional embodiment, the anti-sway barrier 131 includes a front baffle 131a, a left baffle 131b, a rear baffle 131c, and a right baffle 131d connected in sequence. The two sides of the front baffle 131a are fixedly connected to the left baffle 131b and the right baffle 131d, respectively, while the two sides of the rear baffle 131c are detachably connected to the left baffle 131b and the right baffle 131d, respectively.

[0069] Specifically, the two sides of the front baffle 131a can be fixedly connected using high-precision welding or high-strength connectors to ensure a stable and reliable connection. The two sides of the rear baffle 131c can be detachably connected using bolts, nuts, or clips.

[0070] The front baffle 131a, left baffle 131b, rear baffle 131c, and right baffle 131d of the anti-sway enclosure 131 together define a stable square space. The detachable design of the rear baffle 131c allows installers easy access to the connection area of ​​the inlet / outlet pipe 141 and the connecting pipe 30 to perform necessary inspections, repairs, or replacements, improving the convenience and efficiency of maintenance.

[0071] In one alternative embodiment, the front baffle 131a, left baffle 131b, and right baffle 131d are integrally formed with the frame 130.

[0072] From a manufacturing perspective, unibody molding reduces assembly steps, minimizes errors caused by parts splicing during production, improves production efficiency, and effectively saves labor and time costs. In terms of structural stability, the unibody baffle and frame 130 form a robust whole. Compared to spliced ​​structures, there are no gaps or loose connections, greatly enhancing the strength and stability of the entire structure and enabling it to better withstand external impacts and vibrations generated during air conditioning operation.

[0073] In an alternative embodiment, the right baffle 131d is fixedly connected to the housing 100.

[0074] The casing 100 serves as an external protective and support structure, with the right baffle 131d closely connected to it. This provides a more reliable support for the entire indoor unit's internal frame 130 and related components on the right side, enabling it to better resist external impacts or pressures and preventing deformation of the internal structure due to external forces, which could then affect the normal operation of the air conditioner.

[0075] Of course, the above examples are merely illustrative. Based on the understanding of the above embodiments, those skilled in the art should be able to easily expand and transform the shape of the anti-sway barrier 131 in this embodiment. For example, the anti-sway barrier 131 can be designed as a circular barrier. Such expansion and transformation should also fall within the protection scope of this utility model.

[0076] In this embodiment, the inlet and outlet pipes 141 include an inlet pipe 141a and an outlet pipe 141b, and the pipe connector 142 includes a first pipe connector 142a for the inlet pipe 141a and a second pipe connector 142b for the outlet pipe 141b.

[0077] The inlet pipe 141a is responsible for introducing the refrigerant from the outdoor heat exchanger 210 through the connecting pipe 30 into the indoor heat exchanger 140. During this process, the refrigerant carries a large amount of cold or heat, providing an energy source for the heat exchange between the indoor environment and the circulating air. The outlet pipe 141b, on the other hand, transports the refrigerant after heat exchange back to the outdoor heat exchanger 210 for subsequent circulation.

[0078] Based on this, the flow rate and pressure of the refrigerant in the inlet pipe 141a are greater than those in the outlet pipe 141b. In order to ensure that the refrigerant flows smoothly in the pipe, reduce flow resistance, and thus improve the heat exchange efficiency and operational stability of the entire air conditioning system, the diameter of the inlet pipe 141a can be designed to be larger than that of the outlet pipe 141b.

[0079] This pipe diameter variation setting can accurately match the flow and pressure requirements of refrigerant at different stages, effectively avoiding problems such as poor refrigerant flow and excessive pressure loss caused by unreasonable pipe diameter. This allows the indoor unit 10 of the air conditioner to operate efficiently and stably in both cooling and heating modes, providing users with a more comfortable and energy-saving user experience.

[0080] This utility model also provides an air conditioner. Figure 9 This is a schematic structural block diagram of an air conditioner according to an embodiment of the present utility model, as shown below. Figure 9 As shown, the air conditioner includes an outdoor unit 20 and an indoor unit 10 of any of the above embodiments. The outdoor unit 20 has an outdoor heat exchanger 210, and the indoor unit 10 has an indoor heat exchanger 140. The indoor heat exchanger 140 is connected to the outdoor heat exchanger 210 through a connecting pipe 30.

[0081] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: chassis; The frame is installed inside the housing; as well as An indoor heat exchanger is installed on the frame. The indoor heat exchanger has inlet and outlet liquid pipes for connecting to the connecting pipe, and the frame has anti-sway barriers for accommodating and protecting the connecting pipe.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, A tube outlet space is formed between one side of the frame and the housing. A tube connector is provided at the end of the inlet and outlet tubes. The inlet and outlet tubes extend downward from the tube outlet space, such that the height of the tube connector from the lower edge of the frame is 0.45 to 0.75 of the frame height.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The anti-sway enclosure is located below the outlet pipe space, and the pipe joints of the inlet and outlet pipes are located inside the anti-sway enclosure.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, A movable gap is left around the pipe joint and the anti-sway barrier.

5. The indoor unit of the air conditioner according to claim 2, characterized in that, The anti-sway enclosure includes a front baffle, a left baffle, a rear baffle, and a right baffle connected in sequence; The front baffle is fixedly connected to the left baffle and the right baffle on both sides, and the rear baffle is detachably connected to the left baffle and the right baffle on both sides.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The front baffle, the left baffle, and the right baffle are integrally formed with the frame.

7. The indoor unit of the air conditioner according to claim 6, characterized in that, The right baffle is fixedly connected to the housing.

8. The indoor unit of the air conditioner according to claim 2, characterized in that, The inlet and outlet pipes include an inlet pipe and an outlet pipe, and the pipe fittings include a first pipe fitting for the inlet pipe and a second pipe fitting for the outlet pipe.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, The diameter of the inlet pipe is larger than the diameter of the outlet pipe.

10. An air conditioner, characterized in that, include: The outdoor unit of the air conditioner has an outdoor heat exchanger; as well as The indoor unit of the air conditioner according to any one of claims 1-9 has its indoor heat exchanger connected to the outdoor heat exchanger via a connecting pipe.

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