Outdoor unit and heat exchanger of air conditioner

Abstract

Provided are an outdoor unit and a heat exchanger of an air conditioner. The outdoor unit of an air conditioner comprises: a plurality of first refrigerant tubes that are arranged along a first row extending in a first direction; a plurality of second refrigerant tubes that are arranged along a second row parallel to the first row; a first holder including a first support plate, which supports the plurality of first refrigerant tubes, a first extension, which extends from one side of the first support plate, and a second extension, which extends from the other side of the first support plate; and a second holder including a second support plate, which supports the plurality of second refrigerant tubes, a third extension, which extends from one side of the second support plate, and a fourth extension, which extends from the other side of the second plate. The second extension is disposed between the first extension and the second holder, and the third extension is disposed between the fourth extension and the first holder. The second extension and the third extension are in contact with and coupled to each other.

Description

Outdoor unit and heat exchanger of air conditioner

[0001] The present disclosure relates to a heat exchanger and an outdoor unit of an air conditioner including the same.

[0002] An air conditioner is a device that uses a refrigeration cycle to regulate temperature, humidity, airflow, and air distribution to meet human needs. The main components of the refrigeration cycle include a compressor, condenser, evaporator, and blower fan.

[0003] Air conditioners can be divided into separate air conditioners in which the indoor and outdoor units are installed separately, and integrated air conditioners in which the indoor and outdoor units are installed together in one cabinet.

[0004] The condenser and evaporator are designed as heat exchangers capable of exchanging heat between refrigerant and air to provide harmonized air. The heat exchanger comprises a plurality of refrigerant tubes spaced apart from each other and heat exchange fins joined to the plurality of refrigerant tubes to increase the heat transfer surface area with the air.

[0005] To increase the heat transfer area with air in the heat exchanger, multiple tubes can be arranged in multiple rows parallel to each other.

[0006] Embodiments of the present disclosure provide a heat exchanger having an improved structure so that the heat exchanger can be stably fixed, and an outdoor unit of an air conditioner including the same.

[0007] Embodiments of the present disclosure provide a heat exchanger having an improved structure that reduces the number of parts for fixing the heat exchanger and reduces manufacturing costs, and an outdoor unit of an air conditioner including the same.

[0008] Embodiments of the present disclosure provide a heat exchanger having an improved structure and an outdoor unit of an air conditioner including the same so as to efficiently perform a process of fixing the heat exchanger, thereby reducing manufacturing time and manufacturing cost.

[0009] Embodiments of the present disclosure provide a heat exchanger having an improved structure and an outdoor unit of an air conditioner including the same, which can reduce manufacturing time and manufacturing cost by unifying the types of parts that fix the heat exchanger.

[0010] Embodiments of the present disclosure provide a heat exchanger having an improved structure capable of protecting a refrigerant tube and an outdoor unit of an air conditioner including the same.

[0011] An outdoor unit of an air conditioner according to one embodiment of the present disclosure may include a plurality of first refrigerant tubes arranged along a first row extending in a first direction, a plurality of second refrigerant tubes arranged along a second row parallel to the first row, a first support plate supporting the plurality of first refrigerant tubes, a first holder including a first extension portion extending from one side of the first support plate and a second extension portion extending from the other side of the first support plate, and a second support plate supporting the plurality of second refrigerant tubes, and a second holder including a third extension portion extending from one side of the second support plate and a fourth extension portion extending from the other side of the second support plate. The second extension portion may be disposed between the first extension portion and the second holder. The third extension portion may be disposed between the fourth extension portion and the first holder. The second extension portion and the third extension portion may be coupled to each other while in contact with each other.

[0012] An outdoor unit of an air conditioner according to one embodiment of the present disclosure may include a plurality of first refrigerant tubes arranged along a first row extending in a first direction, a plurality of first heat exchange fins each extending in the first direction and penetrated by the plurality of first refrigerant tubes, a plurality of second refrigerant tubes arranged along a second row parallel to the first row, a plurality of second heat exchange fins each extending in the first direction and penetrated by the plurality of second refrigerant tubes, a first holder arranged parallel to one first heat exchange fin arranged on one side in a direction in which the plurality of first heat exchange fins are arranged and supporting the plurality of first refrigerant tubes, and a second holder arranged parallel to one second heat exchange fin arranged on one side in a direction in which the plurality of second heat exchange fins are arranged and supporting the plurality of second refrigerant tubes. The first holder may include a first support plate in contact with the first heat exchange fin, a first extension portion extending from one end of the first support plate in a second direction perpendicular to the first direction, the other end being adjacent to the second holder, and a second extension portion extending from one end of the first support plate in the second direction, the other end being adjacent to the second holder. The second holder may include a second support plate in contact with the one second heat exchange fin, a third extension portion extending from one end of the second support plate in the second direction, the other end being adjacent to the first holder, and a fourth extension portion extending from one end of the second support plate in the second direction, the other end being opposite to the one end being adjacent to the first holder. The second extension portion and the third extension portion may be fastened by a first fastening member penetrating the second extension portion and the third extension portion in the second direction.

[0013] A heat exchanger according to one embodiment of the present disclosure may include a first heat exchanger including a plurality of first refrigerant tubes arranged along a first row extending in a first direction and a plurality of first heat exchange fins in contact with the plurality of first refrigerant tubes, a second heat exchanger including a plurality of second refrigerant tubes arranged along a second row parallel to the first row and a plurality of second heat exchange fins in contact with the plurality of second refrigerant tubes, a first holder supporting one side of the first heat exchanger, and a second holder supporting one side of the second heat exchanger. The first holder may include a first support plate penetrated by the first refrigerant tubes, and a first coupling portion extending from one end of the first support plate in a second direction orthogonal to the first direction, the one end being adjacent to the second holder. The second holder may include a second support plate penetrated by the second refrigerant tube, and a second coupling portion extending from one end of the second support plate in the second direction adjacent to the first holder, and in contact with and coupled to the first coupling portion.

[0014] The above and other aspects, features and advantages of specific embodiments of the present disclosure will become more apparent from the following detailed description considered in conjunction with the accompanying drawings.

[0015] Figure 1 is a schematic diagram illustrating an outdoor unit of an air conditioner according to various embodiments.

[0016] FIG. 2 is a perspective view illustrating an outdoor unit of an air conditioner according to various embodiments.

[0017] Figure 3 is an exploded perspective view of an outdoor unit of an air conditioner according to various embodiments.

[0018] FIG. 4 is a perspective view illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0019] FIG. 5 is an enlarged perspective view of a part of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0020] Fig. 6 is an enlarged cross-sectional view of a refrigerant tube and heat exchange fins of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0021] FIG. 7 is a diagram illustrating a holder included in an outdoor unit of an air conditioner according to various embodiments.

[0022] FIG. 8 is an enlarged perspective view of a portion of a holder included in an outdoor unit of an air conditioner according to various embodiments.

[0023] FIG. 9 is an enlarged drawing of a portion of a holder included in an outdoor unit of an air conditioner according to various embodiments.

[0024] FIG. 10 is a diagram illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0025] FIG. 11 is an enlarged view of A of FIG. 10 according to various embodiments.

[0026] Fig. 12 is an enlarged perspective view showing the appearance of an outdoor unit of an air conditioner before combining multiple holders according to various embodiments.

[0027] Fig. 13 is a perspective view showing the appearance of a plurality of holders combined in an outdoor unit of an air conditioner according to various embodiments.

[0028] Fig. 14 is an enlarged perspective view of a part of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0029] Fig. 15 is a diagram showing the appearance of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments before bending.

[0030] Fig. 16 is a diagram showing the appearance of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments after bending.

[0031] Fig. 17 is a perspective view illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0032] Fig. 18 is an enlarged perspective view of a part of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0033] Fig. 19 is a perspective view illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0034] Fig. 20 is an enlarged perspective view of a part of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0035] It should be understood that the various embodiments of the present disclosure and the terminology used therein are not intended to limit the technical features described in the present disclosure to specific embodiments, but rather include various modifications, equivalents, or substitutes of the various embodiments.

[0036] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0037] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0038] In this disclosure, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0039] The term “and / or” includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0040] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0041] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it can mean, for example, that the component can be connected to the other component directly (e.g., wired), wirelessly, or via a third component.

[0042] The terms “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the present disclosure, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0043] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0044] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0045] An air conditioner according to various embodiments is a device that performs functions such as air purification, ventilation, humidity control, cooling or heating in an air-conditioned space (hereinafter referred to as “indoor”), and means a device having at least one of these functions.

[0046] In one embodiment, an air conditioner may include a heat pump device to perform a cooling function or a heating function. The heat pump device may include a refrigeration cycle in which a refrigerant circulates along a compressor, a first heat exchanger, an expansion device, and a second heat exchanger. All components of the heat pump device may be housed in a single housing forming the exterior of the air conditioner, such as a window air conditioner or a portable air conditioner. On the other hand, some components of the heat pump device may be housed separately in multiple housings forming a single air conditioner, such as a wall-mounted air conditioner, a stand-alone air conditioner, and a system air conditioner.

[0047] An air conditioner including a plurality of housings may include at least one outdoor unit installed outdoors and at least one indoor unit installed indoors. For example, the air conditioner may be configured such that one outdoor unit and one indoor unit are connected via a refrigerant pipe. For example, the air conditioner may be configured such that one outdoor unit is connected to two or more indoor units via refrigerant pipes. For example, the air conditioner may be configured such that two or more outdoor units and two or more indoor units are connected via a plurality of refrigerant pipes.

[0048] The outdoor unit can be electrically connected to the indoor unit. For example, information (or commands) for controlling the air conditioner can be input through an input interface provided on the outdoor or indoor unit, and the outdoor and indoor units can operate simultaneously or sequentially in response to user input.

[0049] The air conditioner may include an outdoor heat exchanger provided in the outdoor unit, an indoor heat exchanger provided in the indoor unit, and a refrigerant pipe connecting the outdoor heat exchanger and the indoor heat exchanger.

[0050] An outdoor heat exchanger can utilize a phase change (e.g., evaporation or condensation) of the refrigerant to exchange heat between the refrigerant and the outdoor air. For example, while the refrigerant condenses in the outdoor heat exchanger, it releases heat to the outdoor air, and while the refrigerant flowing in the outdoor heat exchanger evaporates, it absorbs heat from the outdoor air.

[0051] Indoor units are typically installed indoors. For example, indoor units can be categorized into ceiling-mounted, stand-alone, and wall-mounted types based on their placement. Ceiling-mounted indoor units, for example, can be categorized into four-way, one-way, and duct-type types based on their air discharge method.

[0052] Similarly, an indoor heat exchanger can utilize the phase change of the refrigerant (e.g., evaporation or condensation) to exchange heat between the refrigerant and indoor air. For example, while the refrigerant evaporates in the indoor unit, the refrigerant can absorb heat from the indoor air. The cooled indoor air can then be blown through the cooled indoor heat exchanger, thereby cooling the room. Furthermore, while the refrigerant condenses in the indoor heat exchanger, the refrigerant can release heat to the indoor air. By blowing the heated indoor air through the high-temperature indoor heat exchanger, the room can be heated.

[0053] For example, an air conditioner performs a cooling or heating function through a phase change process of a refrigerant circulating between an outdoor heat exchanger and an indoor heat exchanger. To circulate the refrigerant, the air conditioner may include a compressor that compresses the refrigerant. The compressor can draw in refrigerant gas through an intake port and compress the refrigerant gas. The compressor can discharge high-temperature and high-pressure refrigerant gas through an exhaust port. The compressor may be placed inside the outdoor unit.

[0054] The refrigerant may circulate through the refrigerant pipes in the order of a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, or in the order of a compressor, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger.

[0055] For example, if an air conditioner has one outdoor unit and one indoor unit directly connected through a refrigerant pipe, the refrigerant may be arranged to circulate between one outdoor unit and one indoor unit through the refrigerant pipe.

[0056] For example, in an air conditioner, if one outdoor unit is connected to two or more indoor units via refrigerant pipes, the refrigerant can flow to multiple indoor units via refrigerant pipes branching from the outdoor unit. The refrigerant discharged from the multiple indoor units can be combined and circulated to the outdoor unit. For example, multiple indoor units can be directly connected in parallel to a single outdoor unit via separate refrigerant pipes.

[0057] Multiple indoor units can operate independently, each according to a user-defined operating mode. That is, some indoor units can operate in cooling mode, while others operate in heating mode. In this case, the refrigerant can be selectively introduced into each indoor unit at either high or low pressure along a designated circulation path via a flow-through valve, described later, and then discharged to the outdoor unit for circulation.

[0058] For example, when an air conditioner has two or more outdoor units and two or more indoor units connected through multiple refrigerant pipes, the refrigerant discharged from the multiple outdoor units may merge and flow through a single refrigerant pipe, then branch off again at some point and flow into multiple indoor units.

[0059] Multiple outdoor units may all be operated, or at least some may not be operated, depending on the operating load of the multiple indoor units. In this case, the refrigerant may be introduced into the outdoor unit, which is selectively operated, through a flow switching valve and circulated there. The air conditioner may include an expansion device to reduce the pressure of the refrigerant flowing into the heat exchanger. For example, the expansion device may be located within the indoor unit, the outdoor unit, or both.

[0060] An expansion device can, for example, utilize a throttling effect to lower the temperature and pressure of the refrigerant. The expansion device may include an orifice capable of reducing the cross-sectional area of ​​the flow path. Refrigerant passing through the orifice may experience a decrease in temperature and pressure.

[0061] The expansion device may be implemented as, for example, an electronic expansion valve capable of controlling the opening ratio (the ratio of the cross-sectional area of ​​the valve's flow path when partially open to the cross-sectional area of ​​the valve's flow path when fully open). Depending on the opening ratio of the electronic expansion valve, the amount of refrigerant passing through the expansion device can be controlled.

[0062] The air conditioner may further include a flow diverter valve positioned along the refrigerant circulation path. The flow diverter valve may include, for example, a four-way valve. The flow diverter valve may determine the refrigerant circulation path depending on the indoor unit's operating mode (e.g., cooling operation or heating operation). The flow diverter valve may be connected to the discharge port of the compressor.

[0063] The air conditioner may include an accumulator. The accumulator may be connected to the suction port of the compressor. The accumulator may receive low-temperature, low-pressure refrigerant vaporized in an indoor heat exchanger or an outdoor heat exchanger.

[0064] The accumulator can separate the refrigerant liquid from the refrigerant gas when a refrigerant mixture of refrigerant liquid and refrigerant gas is introduced, and provide the refrigerant gas from which the refrigerant liquid has been separated to the compressor.

[0065] An outdoor fan may be installed near the outdoor heat exchanger. The outdoor fan may blow outdoor air to the outdoor heat exchanger to promote heat exchange between the refrigerant and the outdoor air.

[0066] The outdoor unit of the air conditioner may include at least one sensor. For example, the sensor of the outdoor unit may be provided as an environmental sensor. The outdoor unit sensor may be positioned at any location inside or outside the outdoor unit. For example, the outdoor unit sensor may include a temperature sensor for detecting the air temperature around the outdoor unit, a humidity sensor for detecting the air humidity around the outdoor unit, a refrigerant temperature sensor for detecting the refrigerant temperature of a refrigerant pipe passing through the outdoor unit, or a refrigerant pressure sensor for detecting the refrigerant pressure of a refrigerant pipe passing through the outdoor unit.

[0067] An outdoor unit of an air conditioner may include an outdoor unit communication unit including a communication circuit. The outdoor unit communication unit may be configured to receive a control signal from a control unit (e.g., including a control and / or processing circuit) of an indoor unit of the air conditioner, which will be described later. The outdoor unit may control the operation of a compressor, an outdoor heat exchanger, an expansion device, a flow switching valve, an accumulator, or an outdoor fan based on the control signal received through the outdoor unit communication unit. The outdoor unit may transmit a sensing value detected from an outdoor unit sensor to a control unit of the indoor unit through the outdoor unit communication unit.

[0068] The indoor unit of the air conditioner may include a housing, a blower for circulating air into or out of the housing, and an indoor heat exchanger for exchanging heat with air flowing into the interior of the housing.

[0069] The housing may include an intake port through which indoor air may be drawn into the interior of the housing.

[0070] The indoor unit of the air conditioner may include a filter that is provided to filter foreign substances in the air that flows into the housing through the intake port.

[0071] The housing may include an exhaust port. Air flowing within the housing may be discharged to the exterior of the housing through the exhaust port.

[0072] The housing of the indoor unit may be provided with an airflow guide that guides the direction of air discharged through the exhaust port. For example, the airflow guide may include blades positioned above the exhaust port. For example, the airflow guide may include an auxiliary fan for controlling the exhaust airflow. However, the airflow guide is not limited thereto and may be omitted.

[0073] An indoor heat exchanger and a blower may be provided inside the housing of the indoor unit, which are arranged on a path connecting the intake and exhaust ports.

[0074] Blowers may include indoor fans and fan motors. For example, indoor fans may include axial fans, diffusion fans, crossflow fans, and centrifugal fans.

[0075] An indoor heat exchanger may be positioned between the blower and the exhaust, or between the intake and the blower. The indoor heat exchanger may absorb heat from air drawn in through the intake or transfer heat to the air drawn in through the intake. The indoor heat exchanger may include heat exchange tubes through which refrigerant flows, and heat exchange fins in contact with the heat exchange tubes to increase the heat transfer surface area.

[0076] The indoor unit of the air conditioner may include a drain tray positioned below the indoor heat exchanger to collect condensate generated in the indoor heat exchanger. The condensate collected in the drain tray may be drained to the outside through a drain hose. The drain tray may be provided to support the indoor heat exchanger.

[0077] An indoor unit of an air conditioner may include an input interface (e.g., including various interface circuits). The input interface may include any type of user input means, including buttons, switches, a touch screen, and / or a touch pad. A user may directly input setting data (e.g., a desired indoor temperature, a cooling / heating / dehumidifying / air purifying operation mode setting, an outlet selection setting, and / or a wind speed setting) through the input interface.

[0078] The input interface may also be connected to an external input device. For example, the input interface may be electrically connected to a wired remote controller. The wired remote controller may be installed at a specific location in an indoor space (e.g., a portion of a wall). A user may input configuration data regarding the operation of the air conditioner by operating the wired remote controller. Electrical signals corresponding to the configuration data obtained through the wired remote controller may be transmitted to the input interface. In addition, the input interface may include an infrared sensor. A user may remotely input configuration data regarding the operation of the air conditioner using a wireless remote controller. The configuration data input through the wireless remote controller may be transmitted to the input interface as an infrared signal.

[0079] The input interface may include a microphone. A user's voice command may be acquired through the microphone. The microphone may convert the user's voice command into an electrical signal and transmit the converted electrical signal to an indoor unit control unit. The indoor unit control unit may control components of the air conditioner to execute a function corresponding to the user's voice command. Setting data acquired through the input interface (e.g., desired indoor temperature, operation mode settings for cooling / heating / dehumidification / air purification, outlet selection settings, and / or air volume settings) may be transmitted to the indoor unit control unit, which will be described later. In one example, the setting data acquired through the input interface may be transmitted externally, i.e., to an outdoor unit or a server, through an indoor unit communication unit, which will be described later.

[0080] The indoor unit of the air conditioner may include a power module (e.g., including a power supply circuit). The power module may be connected to an external power source to supply power to components of the indoor unit.

[0081] An indoor unit of an air conditioner may include an indoor unit sensor. The indoor unit sensor may be an environmental sensor positioned in a space inside or outside the housing. For example, the indoor unit sensor may include one or more temperature sensors and / or humidity sensors positioned in a predetermined space inside or outside the housing of the indoor unit. For example, the indoor unit sensor may include a refrigerant temperature sensor for detecting a refrigerant temperature of a refrigerant pipe passing through the indoor unit. For example, the indoor unit sensor may include respective refrigerant temperature sensors for detecting the inlet, middle, and / or outlet temperatures of the refrigerant pipe passing through the indoor heat exchanger.

[0082] For example, each environmental information detected by an indoor unit sensor can be transmitted to the indoor unit control unit described later or transmitted externally through the indoor unit communication unit described later.

[0083] The indoor unit of the air conditioner may include an indoor unit communication unit. The indoor unit communication unit may include at least one of a short-range communication module and a long-range communication module. The indoor unit communication unit may include at least one antenna for wirelessly communicating with another device. The outdoor unit may include an outdoor unit communication unit. The outdoor unit communication unit may also include at least one of a short-range communication module and a long-range communication module, each of which may include various communication circuits.

[0084] The short-range wireless communication module may include, but is not limited to, a Bluetooth communication module, a BLE (Bluetooth Low Energy) communication module, a near field communication module, a WLAN (Wi-Fi) communication module, a Zigbee communication module, an infrared (IrDA, infrared Data Association) communication module, a WFD (Wi-Fi Direct) communication module, an UWB (ultrawideband) communication module, an Ant+ communication module, a microwave (uWave) communication module, etc.

[0085] The remote communication module may include a communication module that performs various types of remote communication and may include a mobile communication unit. The mobile communication unit transmits and receives wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0086] The indoor unit communication unit can communicate with external devices such as servers, mobile devices, and other home appliances through a nearby access point (AP). The access point (AP) can connect a local area network (LAN) to which the air conditioner or user device is connected to a wide area network (WAN) to which the server is connected. The air conditioner or user device can be connected to the server through the wide area network (WAN). The indoor unit of the air conditioner may include an indoor unit control unit that controls components of the indoor unit, including a blower, etc. The outdoor unit of the air conditioner may include an outdoor unit control unit that controls components of the outdoor unit, including a compressor, etc. The indoor unit control unit can communicate with the outdoor unit control unit through the indoor unit communication unit and the outdoor unit communication unit. The outdoor unit communication unit can transmit control signals generated by the outdoor unit control unit to the indoor unit communication unit, or transmit control signals transmitted from the indoor unit communication unit to the outdoor unit control unit. In other words, the outdoor unit and the indoor unit can communicate bidirectionally. The outdoor unit and the indoor unit can transmit and receive various signals generated during the operation of the air conditioner.

[0087] The outdoor unit control unit can be electrically connected to components of the outdoor unit and can control the operation of each component. For example, the outdoor unit control unit can adjust the frequency of the compressor and control the flow switching valve to change the circulation direction of the refrigerant. The outdoor unit control unit can adjust the rotation speed of the outdoor fan. In addition, the outdoor unit control unit can generate a control signal to adjust the opening degree of the expansion valve. Under the control of the outdoor unit control unit, the refrigerant can circulate along a refrigerant circulation circuit including the compressor, the flow switching valve, the outdoor heat exchanger, the expansion valve, and the indoor heat exchanger.

[0088] The various temperature sensors included in the outdoor and indoor units can transmit electrical signals corresponding to the detected temperatures to the outdoor unit control unit and / or the indoor unit control unit. For example, the humidity sensors included in the outdoor and indoor units can transmit electrical signals corresponding to the detected humidity to the outdoor unit control unit and / or the indoor unit control unit.

[0089] The indoor unit control unit can obtain user input from a user device, including a mobile device, via the indoor unit communication unit, and can obtain user input directly through the input interface or via a remote controller. The indoor unit control unit can control components of the indoor unit, including a blower, in response to the received user input. The indoor unit control unit can transmit information regarding the received user input to the outdoor unit control unit of the outdoor unit.

[0090] The outdoor unit control unit can control the components of the outdoor unit, including the compressor, based on information regarding user input received from the indoor unit. For example, when a control signal corresponding to a user input for selecting an operation mode, such as cooling operation, heating operation, ventilation operation, defrosting operation, or dehumidification operation, is received from the indoor unit, the outdoor unit control unit can control the components of the outdoor unit so that the air conditioner performs an operation corresponding to the selected operation mode.

[0091] The outdoor unit control unit and the indoor unit control unit may each include a processor and a memory. The indoor unit control unit may include at least one first processor and at least one first memory, and the outdoor unit control unit may include at least one second processor and at least one second memory. A processor according to an embodiment of the present disclosure may include various processing circuits and / or multiple processors. For example, the term "processor" as used herein, including in the claims, may include various processing circuits including at least one processor, and one or more of the at least one processor may be individually and / or collectively configured to perform various functions. As used herein, when "processor," "at least one processor," and "one or more processors" are described as being configured to perform various functions, these terms encompass, for example and without limitation, situations where one processor performs some of the recited functions and another processor performs other parts of the recited functions, as well as situations where a single processor may perform all of the recited functions. Additionally, the at least one processor may include a combination of processors that perform the various recited / disclosed functions, for example, in a distributed manner. At least one processor can execute program instructions to accomplish or perform various functions.

[0092] The memory can store / remember various information necessary for the operation of the air conditioner. The memory can store instructions, applications, data, and / or programs necessary for the operation of the air conditioner. For example, the memory can store various programs for cooling, heating, dehumidifying, and / or defrosting operations of the air conditioner. The memory can include volatile memory, such as Static Random Access Memory (S-RAM) and Dynamic Random Access Memory (DRAM), for temporarily storing data. In addition, the memory can include nonvolatile memory, such as Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), and Electrically Erasable Programmable Read Only Memory (EEPROM), for storing data for a long period of time.

[0093] The processor can generate control signals for controlling the operation of the air conditioner based on instructions, applications, data, and / or programs stored in memory. The processor includes hardware and may include logic circuits and arithmetic circuits. The processor can process data according to programs and / or instructions provided from the memory and generate control signals based on the processing results. The memory and the processor may be implemented as a single control circuit or as multiple circuits.

[0094] An indoor unit of an air conditioner may include an output interface. The output interface is electrically connected to the indoor unit control unit and can output information related to the operation of the air conditioner under the control of the indoor unit control unit. For example, information such as an operating mode selected by a user input, wind direction, wind volume, and temperature may be output. Additionally, the output interface may output sensing information obtained from an indoor unit sensor or an outdoor unit sensor, as well as warning / error messages.

[0095] The output interface may include various output circuits, displays, and speakers. The speakers, as audio devices, can output various sounds. The display may display information input by the user or information provided to the user using various graphic elements. For example, operation information of an air conditioner may be displayed as at least an image or text. The display may also include indicators that provide specific information. The display may include a liquid crystal display panel (LCD), a light emitting diode panel (LED), an organic light emitting diode panel (OLED), a micro LED panel, and / or a plurality of LEDs.

[0096] Hereinafter, various embodiments according to the present disclosure will be described with reference to the attached drawings.

[0097] Meanwhile, the terms "upper", "lower", "front", "rear", etc. used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, referring to FIG. 2, the direction in which the exhaust grill (180) and the front cover (190) of the outdoor unit (10) of the air conditioner (1) according to one embodiment of the present disclosure are respectively directed may be defined as forward (+X direction), and the opposite direction may be defined as rear (-X direction). The vertical direction in which the top cover (171) of the outdoor unit (10) of the air conditioner (1) is directed may be defined as upward (+Z direction), and the opposite direction may be defined as downward (-Z direction). The direction in which the first side frame (150) of the outdoor unit (10) of the air conditioner (1) is located may be defined as leftward (-Y direction), and the opposite direction may be defined as rightward (+Y direction).

[0098] FIG. 1 is a perspective view illustrating an air conditioner according to various embodiments.

[0099] Referring to FIG. 1, an air conditioner (1) according to one embodiment of the present disclosure may include an indoor unit (20) placed in an indoor space and an outdoor unit (10) placed in an outdoor space.

[0100] An air conditioner (1) can absorb heat from within the air-conditioned space and release heat from the outside of the air-conditioned space in order to cool the air-conditioned space. In addition, the air conditioner (1) can absorb heat from the outside of the air-conditioned space and release heat into the air-conditioned space in order to heat the air-conditioned space.

[0101] The outdoor unit (10) can exchange heat with outdoor air outside the air-conditioned space. The outdoor unit (10) can perform heat exchange between the refrigerant and the outdoor air by utilizing a phase change of the refrigerant (e.g., evaporation or condensation). For example, the outdoor unit (10) can release heat from the refrigerant to the outdoor air by utilizing condensation of the refrigerant. Additionally, the outdoor unit (10) can absorb heat from the outdoor air into the refrigerant by utilizing evaporation of the refrigerant.

[0102] Although one outdoor unit (10) is illustrated in FIG. 1, the number of outdoor units (10) is not limited by that illustrated in FIG. 1. For example, the air conditioner (1) may include multiple outdoor units.

[0103] The outdoor unit (10) may include an outdoor heat exchanger (200, see FIG. 3) that exchanges heat with outdoor air and a compressor (12, see FIG. 3) that compresses refrigerant gas.

[0104] The configuration of the outdoor unit (10) is described in detail below.

[0105] The indoor unit (20) can exchange heat with indoor air within the air-conditioned space. The indoor unit (20) can perform heat exchange between the refrigerant and indoor air by utilizing a phase change (e.g., evaporation or condensation) of the refrigerant. For example, the indoor unit (20) can cool the air-conditioned space by absorbing heat from the indoor air into the refrigerant through evaporation of the refrigerant. In addition, the indoor unit (20) can heat the air-conditioned space by releasing heat from the refrigerant into the indoor air through condensation of the refrigerant.

[0106] The indoor unit (20) may include an indoor heat exchanger that exchanges heat with indoor air, an indoor blower fan that sucks and blows indoor air to allow the indoor air to pass through the indoor heat exchanger, and an expansion valve unit that decompresses and expands the refrigerant.

[0107] Although one indoor unit (20) is illustrated in FIG. 1, the number of indoor units (20) is not limited by that illustrated in FIG. 1. For example, the air conditioner (1) may include multiple indoor units. Different indoor units may be installed in different air conditioning spaces, respectively.

[0108] In this way, the air conditioner (1) can perform heat exchange between the refrigerant and outdoor air outside the air conditioning space and heat exchange between the refrigerant and indoor air within the air conditioning space.

[0109] At this time, the air conditioner (1) may include a refrigerant pipe (30) that transfers refrigerant between the indoor unit (20) and the outdoor unit (10) in order to transfer heat between the outside of the air-conditioned space and the inside of the air-conditioned space. The refrigerant pipe (30) may allow refrigerant to flow between the outside of the air-conditioned space and the inside of the air-conditioned space. The indoor unit (20) and the outdoor unit (10) may be connected to each other through the refrigerant pipe (30) that transfers refrigerant.

[0110] The air conditioner (1) described above is merely an example of an air conditioner to which the outdoor unit of the air conditioner according to the concept of the present disclosure can be applied, and the concept of the present disclosure is not limited thereto. The configuration of the air conditioner to which the outdoor unit of the air conditioner according to the concept of the present disclosure can be applied, and the indoor unit, refrigerant pipe, etc. included therein can be provided in various ways.

[0111] Fig. 2 is a perspective view illustrating an outdoor unit of an air conditioner according to various embodiments. Fig. 3 is an exploded perspective view of an outdoor unit of an air conditioner according to various embodiments.

[0112] Referring to FIGS. 2 and 3, an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure may include an outdoor heat exchanger (200) for exchanging heat with outdoor air, a compressor (12) for compressing refrigerant, an outdoor fan (13) for sucking and blowing outdoor air so that the outdoor air passes through the outdoor heat exchanger (200), and a housing (100) forming the exterior of the outdoor unit (10).

[0113] The housing (100) can form the exterior of the outdoor unit (10). Various components of the outdoor unit (10), such as the outdoor heat exchanger (200), compressor (12), and outdoor fan (13), can be accommodated inside the housing (100).

[0114] The housing (100) may include an inlet (131, 151) formed to allow air to flow in and an outlet (111) formed to allow air to flow out. As the outdoor fan (13) rotates, air outside the housing (100) may flow in through the inlet (131, 151), and after exchanging heat with the outdoor heat exchanger (200), may be discharged to the outside of the housing (100) through the outlet (111).

[0115] The outdoor unit (10) may include a heat exchange chamber (R1) formed inside the housing (100). Outside air may be introduced into the heat exchange chamber (R1), and the introduced air may be discharged back to the outside. In the heat exchange chamber (R1), heat exchange may take place between the outdoor heat exchanger (200) and the air introduced from the outside. Components such as the outdoor heat exchanger (200) and the outdoor fan (13) may be arranged in the heat exchange chamber (R1).

[0116] The outdoor unit (10) may include a machine room (R2) formed inside the housing (100). Components such as a compressor (12) and a control box (80) may be placed in the machine room (R2).

[0117] Inside the housing (100), the heat exchange room (R1) and the machine room (R2) can be partitioned from each other. The outdoor unit (10) can include a partition (16) that partitions the heat exchange room (R1) and the machine room (R2). The partition (16) can be arranged between the heat exchange room (R1) and the machine room (R2). For example, the heat exchange room (R1) and the machine room (R2) can be arranged in the left-right direction (Y direction) in the drawing, and the partition (16) can be arranged to extend in the up-down direction (Z direction) in the drawing and partition the heat exchange room (R1) and the machine room (R2).

[0118] For example, the housing (100) can be formed to have a roughly box shape.

[0119] Below, an example of the structure of the housing (100) is described.

[0120] The housing (100) may include a first front frame (110). The first front frame (110) may cover the front (+X direction) of the heat exchange chamber (R1). An exhaust port (111) may be formed in the first front frame (110).

[0121] The housing (100) may include a second front frame (120). The second front frame (120) may cover the front (+X direction) of the machine room (R2). For example, the second front frame (120) may be formed in a substantially flat plate shape.

[0122] For example, the first front frame (110) and the second front frame (120) may be arranged side by side in the left-right direction (Y direction). The first front frame (110) and the second front frame (120) may be coupled to each other.

[0123] For example, a plurality of heat dissipation holes may be formed in the second front frame (120) so that the machine room (R2) can be connected to the outside of the outdoor unit (10) and heat within the machine room (R2) can be released.

[0124] The housing (100) may include a first rear frame (130). The first rear frame (130) may form a part of the rear exterior of the outdoor unit (10). The first rear frame (130) may be arranged at the rear (-X direction) of the heat exchange chamber (R1). An inlet (131) may be formed in the first rear frame (130).

[0125] The first front frame (110) and the first rear frame (130) can be arranged opposite each other.

[0126] The housing (100) may include a second rear frame (140). The second rear frame (140) may form another part of the rear exterior of the outdoor unit (10). The second rear frame (140) may cover the rear (-X direction) of the machine room (R2).

[0127] For example, a plurality of heat dissipation holes may be formed in the second rear frame (140) so that the machine room (R2) can be connected to the outside of the outdoor unit (10) and heat within the machine room (R2) can be released.

[0128] The second front frame (120) and the second rear frame (140) can be positioned opposite each other.

[0129] The housing (100) may include a first side frame (150). The first side frame (150) may form one side of the outdoor unit (10) in the left direction (-Y direction).

[0130] The first side frame (150) can cover the heat exchange room (R1). The first side frame (150) can cover the heat exchange room (R1) from the left direction (-Y direction). An inlet (151) can be formed in the first side frame (150).

[0131] The first side frame (150) can be coupled to the first front frame (110). The first side frame (150) can be connected to the first rear frame (130).

[0132] For example, the first side frame (150) can be arranged to extend in the front-back direction (X direction).

[0133] The housing (100) may include a second side frame (160). The second side frame (160) may form one side of the outdoor unit (10) in the right direction (+Y direction).

[0134] The second side frame (160) can cover the machine room (R2). The second side frame (160) can cover the machine room (R2) in the right direction (+Y direction).

[0135] For example, a plurality of heat dissipation holes may be formed in the second side frame (160) so that the machine room (R2) can be connected to the outside of the outdoor unit (10) and heat within the machine room (R2) can be released.

[0136] The second side frame (160) can be coupled to the second front frame (120). The second side frame (160) can be coupled to the second rear frame (140).

[0137] For example, the second side frame (160) can be arranged to extend in the front-back direction (X direction).

[0138] The first side frame (150) and the second side frame (160) can be arranged opposite each other.

[0139] The housing (100) may include a base (172). The base (172) may form the bottom surface of the outdoor unit (10). The base (172) may be placed on one side of the lower side (-Z direction) of the heat exchange room (R1) and the machine room (R2). The base (172) may support various components of the outdoor unit (10) accommodated inside the housing (100) from the lower side.

[0140] The base (172) can be coupled to the lower portion of each of the first front frame (110), the second front frame (120), the second rear frame (140), the first side frame (150), and the second side frame (160).

[0141] The base (172) can be formed to have a roughly flat plate shape.

[0142] The housing (100) may include a top cover (171). The top cover (171) may form the upper surface of the outdoor unit (10).

[0143] The top cover (171) can cover the upper side (+Z direction) of the heat exchange room (R1) and the machine room (R2). The top cover (171) can cover various parts of the outdoor unit (10) accommodated inside the housing (100) from the upper side.

[0144] The top cover (171) can be coupled to the upper portion of each of the first front frame (110), the second front frame (120), the second rear frame (140), the first side frame (150), and the second side frame (160).

[0145] The top cover (171) can be formed to have a roughly flat plate shape.

[0146] The top cover (171) and the base (172) can be positioned opposite each other.

[0147] The housing (100) may include an exhaust grille (180). The exhaust grille (180) may cover the front (+X) of the first front frame (110). The exhaust grille (180) may cover the front (+X) of the exhaust port (111). The exhaust grille (180) may be coupled to the first front frame (110). The exhaust grille (180) may form a part of the front exterior of the outdoor unit (10).

[0148] The exhaust grill (180) covers the exhaust port (111), but can be formed to have a shape roughly similar to a grill so that air can be discharged from the exhaust port (111).

[0149] The housing (100) may include a front cover (190). The front cover (190) may cover the front (+X) of the second front frame (120). The front cover (190) may be coupled to the second front frame (120). The front cover (190) may form another part of the front exterior of the outdoor unit (10).

[0150] For example, the exhaust grill (180) and the front cover (190) may be arranged side by side in the left-right direction (Y direction). The exhaust grill (180) and the front cover (190) may be coupled to each other.

[0151] Each component included in the housing (100) may be provided to be separable from each other. For example, the second front frame (120) may be provided to be separable from the first front frame (110), the second side frame (160), the top cover (171), the base (172), etc. For example, the second side frame (160) may be provided to be separable from the second front frame (120), the second rear frame (140), the top cover (171), the base (172), etc. For example, the top cover (171) may be provided to be separable from the first front frame (110), the second front frame (120), the second rear frame (140), the first side frame (150), and the second side frame (160). However, the present invention is not limited thereto, and at least some of the components of the housing (100) described above may be formed integrally with each other.

[0152] The configuration of the housing that can be included in the air conditioner according to the invention is not limited to that described above.

[0153] An outdoor heat exchanger (200) may be provided to exchange heat with outdoor air. The outdoor heat exchanger (200) may be provided to allow refrigerant to flow therein. Heat exchange between the refrigerant and outdoor air may occur in the outdoor heat exchanger (200).

[0154] For example, during cooling operation of the air conditioner (1), high-pressure, high-temperature refrigerant gas is condensed in the outdoor heat exchanger (200), and while the refrigerant is condensed, the refrigerant can release heat to the outdoor air. During cooling operation of the air conditioner (1), the outdoor heat exchanger (200) can discharge refrigerant liquid.

[0155] During heating operation of the air conditioner (1), low-temperature, low-pressure refrigerant liquid evaporates in the outdoor heat exchanger (200), and while the refrigerant evaporates, the refrigerant can absorb heat from the outdoor air. During heating operation of the air conditioner (1), the outdoor heat exchanger (200) can discharge refrigerant gas.

[0156] The outdoor heat exchanger (200) can be placed facing the inlet (131, 151) in the heat exchange room (R1).

[0157] The outdoor heat exchanger (200) is described in detail below.

[0158] The compressor (12) can compress refrigerant gas and discharge high-temperature, high-pressure refrigerant gas. For example, the compressor (12) can include a motor and a compression mechanism, and the compression mechanism can compress refrigerant gas by the torque of the motor.

[0159] The outdoor unit (10) may include an outdoor fan (13) configured to circulate air, and a fan motor (14) that generates rotational force for rotating the outdoor fan (13).

[0160] For example, the outdoor unit (10) may include a motor bracket (15) that supports an outdoor fan (13) and a fan motor (14). The motor bracket (15) may be placed in a heat exchange room (R1).

[0161] For example, the outdoor unit (10) may include a plate heat exchanger (21). The plate heat exchanger (21) may be configured to exchange heat between a refrigerant and water. The plate heat exchanger (21) may be arranged inside the housing (100). For example, the plate heat exchanger (21) may be arranged in the machine room (R2).

[0162] For example, the outdoor unit (10) may include a water pipe (23) configured to allow water to flow in or discharge from the outside. The water pipe (23) may be connected to a plate heat exchanger (21). At least a portion of the water pipe (23) may be arranged inside the housing (100). For example, at least a portion of the water pipe (23) may be arranged in the machine room (R2).

[0163] Water introduced into the outdoor unit (10) from the outside through the water pipe (23) can exchange heat with the high-temperature refrigerant inside the plate heat exchanger (21). Inside the plate heat exchanger (21), the water can absorb heat from the high-temperature refrigerant and transfer it back to the outside of the outdoor unit (10) through the water pipe (23).

[0164] For example, the outdoor unit (10) may include an expansion tank (22). When the water temperature rises due to the plate heat exchanger (21), the volume inside the water pipe (23) may increase, and the expansion tank (22) may be provided to prevent and / or reduce a sudden increase in water pressure due to this. The expansion tank (22) may be placed inside the housing (100). For example, the expansion tank (22) may be placed in the machine room (R2).

[0165] In this way, the outdoor unit (10) according to one embodiment may include a part of a heating system that supplies hot water, including a plate heat exchanger (21), a water pipe (23), and an expansion tank (22).

[0166] However, the concept of the present disclosure is not limited thereto, and in an air conditioner according to one embodiment, the plate heat exchanger, water pipes, and expansion tank may be provided outside the outdoor unit. The air conditioner according to one embodiment may not be equipped with a heating system.

[0167] The outdoor unit (10) may include electronic components for controlling the operation of various components of the outdoor unit (10) and a printed circuit board assembly (PBA) on which these components are mounted. The outdoor unit (10) may include one or more control boxes (80) that accommodate such printed circuit board assemblies.

[0168] For example, the outdoor unit (10) may include a duct (17). The duct (17) may be provided to connect the interior of the control box (80) with the heat exchange room (R1).

[0169] When the outdoor fan (13) is driven, air can flow from the inside of the control box (80) through the duct (17) to the heat exchange room (R1) by the suction force of the outdoor fan (13). As a result, heat generated inside the control box (80) can be released to the outside.

[0170] The configuration of the outdoor unit (10) described above is merely an example of an outdoor unit of an air conditioner according to the concept of the present disclosure, and the concept of the present disclosure is not limited thereto. The outdoor unit of an air conditioner according to the concept of the present disclosure may be configured in various ways so that outside air can be introduced through an inlet, and the introduced air can be heat-exchanged and then discharged to the outside.

[0171] Hereinafter, an outdoor heat exchanger (200) included in an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure will be described in detail with reference to FIGS. 4 to 20. In addition, for convenience of explanation, the outdoor heat exchanger (200) will be referred to as a "heat exchanger (200)" hereinafter.

[0172] Fig. 4 is a perspective view illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments. Fig. 5 is an enlarged perspective view of a portion of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments. Fig. 6 is an enlarged cross-sectional view of a refrigerant tube and heat exchange fins of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0173] Referring to FIGS. 4, 5 and 6 (which may be referred to as FIGS. 4 to 6), an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure may include a heat exchanger (200).

[0174] The heat exchanger (200) may include a plurality of refrigerant tubes (211, 221, 231). The plurality of refrigerant tubes (211, 221, 231) may guide the flow of refrigerant for heat exchange with the outside air. A flow path through which the refrigerant flows may be provided on the inside of each of the plurality of refrigerant tubes (211, 221, 231). Each of the plurality of refrigerant tubes (211, 221, 231) may be provided in the shape of a tube having a hollow space formed therein so that the refrigerant as a fluid may flow.

[0175] A plurality of refrigerant tubes (211, 221, 231) can be connected to each other by a connecting tube (260) that is connected to each end of the plurality of refrigerant tubes (211, 221, 231) to form a single refrigerant tube. In the present disclosure, it is defined assuming that each of the refrigerant tubes (211, 221, 231) of the entire refrigerant tube has a distinct configuration.

[0176] The heat exchanger (200) may include a plurality of heat exchange fins (212, 222, 232). Each of the plurality of heat exchange fins (212, 222, 232) may be coupled to some of the plurality of refrigerant tubes (211, 221, 231). The plurality of heat exchange fins (212, 222, 232) may be coupled to the plurality of refrigerant tubes (211, 221, 231) to increase the heat transfer area between the refrigerant and the outside air and to improve heat exchange efficiency.

[0177] Each of the plurality of heat exchange fins (212, 222, 232) may be formed to have a substantially flat plate shape. The plurality of heat exchange fins (212, 222, 232) may be arranged along the direction in which the refrigerant tubes (211, 221, 231) extend. In other words, the plurality of heat exchange fins (212, 222, 232) may be stacked along the direction in which the refrigerant tubes (211, 221, 231) extend.

[0178] In order to improve heat exchange efficiency, it may be required that the heat transfer area between the plurality of refrigerant tubes (211, 221, 231) and the plurality of heat exchange fins (212, 222, 232) and the outside air be increased. However, if the plurality of refrigerant tubes (211, 221, 231) and the entire plurality of refrigerant tubes (211, 221, 231) are arranged side by side in one direction due to the size of the product, spatial restrictions may occur due to the size of the product.

[0179] Accordingly, as illustrated in FIGS. 4 and 5, a plurality of refrigerant tubes (211, 221, 231) included in the heat exchanger (200) can be arranged along a plurality of rows parallel to each other.

[0180] For example, the heat exchanger (200) may include a plurality of first refrigerant tubes (211). The plurality of first refrigerant tubes (211) may be arranged along a first row extending in a first direction (Z). For example, the first direction (Z) may be parallel to the vertical direction (up-down direction) of the outdoor unit (10), and the first row may be a vertical row of the outdoor unit (10).

[0181] The heat exchanger (200) may include a plurality of first heat exchange fins (212) coupled to a plurality of first refrigerant tubes (211). The plurality of first heat exchange fins (212) may be coupled to outer peripheral surfaces of the plurality of first refrigerant tubes (211). The plurality of first heat exchange fins (212) may be penetrated by the plurality of first refrigerant tubes (211). The plurality of first heat exchange fins (212) may be in contact with the plurality of first refrigerant tubes (211). Accordingly, the plurality of first heat exchange fins (212) may be provided to increase a heat transfer area between the plurality of first refrigerant tubes (211) and the outside air.

[0182] For example, a plurality of first refrigerant tubes (211) may be arranged to penetrate a plurality of first heat exchange fins (212), and then connected to a plurality of first heat exchange fins (212) through an expansion process in which each of the first refrigerant tubes (211) is expanded outward by a tube expansion device.

[0183] Each of the plurality of first heat exchange fins (212) may extend in the first direction (Z). For example, each of the plurality of first heat exchange fins (212) may have a long length in the first direction (Z). The plurality of first heat exchange fins (212) may be arranged horizontally (on the XY plane) to each other.

[0184] The heat exchanger (200) may include a first heat exchange unit (210). The first heat exchange unit (210) may include a plurality of first refrigerant tubes (211) and a plurality of first heat exchange fins (212) as described above.

[0185] For example, the first heat exchange unit (210) may extend along a first direction (Z) in which a plurality of first refrigerant tubes (211) are arranged. In addition, the first heat exchange unit (210) may extend along a direction in which a plurality of first heat exchange fins (212) are arranged. The diametrical width of the first refrigerant tube (211) of the first heat exchange unit (210) may be set to be shorter than the length of the first heat exchange unit (210) in the first direction (Z) and the length of the direction in which the plurality of first heat exchange fins (212) of the first heat exchange unit (210) are arranged.

[0186] The heat exchanger (200) may include a plurality of second refrigerant tubes (221). The plurality of second refrigerant tubes (221) may be arranged along a second row extending in the first direction (Z). That is, the plurality of second refrigerant tubes (221) may be arranged along a second row parallel to the first row. For example, the second row may be a vertical row of the outdoor unit (10).

[0187] The heat exchanger (200) may include a plurality of second heat exchange fins (222) coupled to a plurality of second refrigerant tubes (221). The plurality of second heat exchange fins (222) may be coupled to outer peripheral surfaces of the plurality of second refrigerant tubes (221). The plurality of second heat exchange fins (222) may be penetrated by the plurality of second refrigerant tubes (221). The plurality of second heat exchange fins (222) may be in contact with the plurality of second refrigerant tubes (221). Accordingly, the plurality of second heat exchange fins (222) may be provided to increase a heat transfer area between the plurality of second refrigerant tubes (221) and the outside air.

[0188] For example, a plurality of second refrigerant tubes (221) may be arranged to penetrate a plurality of second heat exchange fins (222), and then connected to a plurality of second heat exchange fins (222) through an expansion process in which each second refrigerant tube (221) is expanded outward by an expansion device.

[0189] Each of the plurality of second heat exchange fins (222) may extend in the first direction (Z). For example, each of the plurality of second heat exchange fins (222) may have a long length in the first direction (Z). The plurality of second heat exchange fins (222) may be arranged horizontally (on the XY plane) to each other.

[0190] The heat exchanger (200) may include a second heat exchange unit (220). The second heat exchange unit (220) may include a plurality of second refrigerant tubes (221) and a plurality of second heat exchange fins (222) as described above.

[0191] For example, the second heat exchange unit (220) may extend along the first direction (Z), which is the direction in which the plurality of second refrigerant tubes (221) are arranged. In addition, the second heat exchange unit (220) may extend along the direction in which the plurality of second heat exchange fins (222) are arranged. The diametrical width of the second refrigerant tube (221) of the second heat exchange unit (220) may be provided to be shorter than the length of the second heat exchange unit (220) in the first direction (Z) and the length of the direction in which the plurality of second heat exchange fins (222) of the second heat exchange unit (220) are arranged.

[0192] The heat exchanger (200) may include a plurality of third refrigerant tubes (231). The plurality of third refrigerant tubes (231) may be arranged along a third row extending in the first direction (Z). That is, the plurality of third refrigerant tubes (231) may be arranged along a third row parallel to the first row and the second row. For example, the third row may be a vertical row of the outdoor unit (10).

[0193] The heat exchanger (200) may include a plurality of third heat exchange fins (232) coupled to a plurality of third refrigerant tubes (231). The plurality of third heat exchange fins (232) may be coupled to outer peripheral surfaces of the plurality of third refrigerant tubes (231). The plurality of third heat exchange fins (232) may be penetrated by the plurality of third refrigerant tubes (231). The plurality of third heat exchange fins (232) may be in contact with the plurality of third refrigerant tubes (231). Accordingly, the plurality of third heat exchange fins (232) may be provided to increase the heat transfer area between the plurality of third refrigerant tubes (231) and the outside air.

[0194] For example, a plurality of third refrigerant tubes (231) may be arranged to penetrate a plurality of third heat exchange fins (232), and then connected to a plurality of third heat exchange fins (232) through an expansion process in which each of the third refrigerant tubes (231) is expanded outward by an expansion device.

[0195] Each of the plurality of third heat exchange fins (232) may extend in the first direction (Z). For example, each of the plurality of third heat exchange fins (232) may have a long length in the first direction (Z). The plurality of third heat exchange fins (232) may be arranged horizontally (on the XY plane) to each other.

[0196] The heat exchanger (200) may include a third heat exchange unit (230). The second heat exchange unit (220) may include a plurality of third refrigerant tubes (231) and a plurality of third heat exchange fins (232) described above.

[0197] For example, the third heat exchange unit (230) may extend along the first direction (Z), which is the direction in which the plurality of third refrigerant tubes (231) are arranged. In addition, the third heat exchange unit (230) may extend along the direction in which the plurality of third heat exchange fins (232) are arranged. The diametrical width of the third refrigerant tube (231) of the third heat exchange unit (230) may be provided to be shorter than the length of the third heat exchange unit (230) in the first direction (Z) and the length of the third heat exchange fins (232) of the third heat exchange unit (230) in the direction in which the plurality of third heat exchange fins (232) of the third heat exchange unit (230) are arranged.

[0198] The first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) may be arranged in a direction different from the first direction (Z). For example, the first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) may be arranged in a horizontal direction (on the XY plane) with respect to each other.

[0199] For example, the second heat exchange unit (220) may be arranged between the first heat exchange unit (210) and the third heat exchange unit (230). For example, the first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) may be arranged along the width direction of each heat exchange unit (210, 220, 230).

[0200] In this way, the heat exchanger (200) can have an improved heat transfer area by including a first heat exchange unit (210), a second heat exchange unit (220), and a third heat exchange unit (230).

[0201] It may be necessary to form each of the plurality of refrigerant tubes (211, 221, 231) longer in order to increase the heat transfer area between the refrigerant and the outside air. However, forming each of the plurality of refrigerant tubes (211, 221, 231) longer in only one direction may result in space constraints due to the size of the product.

[0202] Accordingly, each of the plurality of refrigerant tubes (211, 221, 231) may be configured as a hairpin-shaped refrigerant tube.

[0203] For example, each of the plurality of first refrigerant tubes (211) may include a first return tube portion (211b) provided on one side of each of the first refrigerant tubes (211). The first return tube portion (211b) may be formed to have a bent shape. The first return tube portion (211b) may be formed to have an approximate 'U' shape. For example, the refrigerant flowing in one direction along the linear portion of each of the plurality of first refrigerant tubes (211) may turn in the first return tube portion (211b) and flow in the opposite direction. The first return tube portion (211b) may be provided on one end of the first heat exchange portion (210).

[0204] Each of the plurality of second refrigerant tubes (221) may include a second return tube portion (221b) provided on one side of each of the second refrigerant tubes (221). The second return tube portion (221b) may be formed to have a bent shape. The second return tube portion (221b) may be formed to have an approximate 'U' shape. For example, the refrigerant flowing in one direction along the linear portion of each of the plurality of second refrigerant tubes (221) may turn in the second return tube portion (221b) and flow in the opposite direction. The second return tube portion (221b) may be provided on one end of the second heat exchange portion (220).

[0205] Each of the plurality of third refrigerant tubes (231) may include a third return tube portion (231b) provided on one side of each of the third refrigerant tubes (231). The third return tube portion (231b) may be formed to have a bent shape. The third return tube portion (231b) may be formed to have an approximate 'U' shape. For example, the refrigerant flowing in one direction along the linear portion of each of the plurality of third refrigerant tubes (231) may turn in the third return tube portion (231b) and flow in the opposite direction. The third return tube portion (231b) may be provided on one end of the third heat exchange portion (230).

[0206] In order to more efficiently increase the heat transfer area of ​​the heat exchanger (200) relative to the size of the product, the heat exchanger (200) may be formed to have a curved shape.

[0207] For example, the heat exchanger (200) may include a first linear portion (200A) extending in one direction, a second linear portion (200B) extending in a direction different from the first linear portion (200A), and a vent portion (200C) provided between the first linear portion (200A) and the second linear portion (200B). The vent portion (200C) may be formed by bending.

[0208] For example, the first linear section (200A) may be positioned to face the inlet (151) of the first side frame (150) (see FIG. 3). For example, the second linear section (200B) may be positioned to face the inlet (131) of the first rear frame (130) (see FIG. 3).

[0209] For example, the return tube portion (211b, 221b, 231b) of each of the plurality of refrigerant tubes (211, 221, 231) may be provided at one end of the first linear portion (200A) opposite to the vent portion (200C).

[0210] A detailed description of the process of forming a heat exchanger (200) by bending will be described later.

[0211] As described above, since the heat exchanger (200) includes a plurality of heat exchange parts (210, 220, 230), it may be required that the plurality of heat exchange parts (210, 220, 230) maintain a stably fixed position relative to each other. If the plurality of heat exchange parts (210, 220, 230) are not fixed to each other, collisions, interference, etc. may occur between the heat exchange parts (210, 220, 230) while the product is being moved or while the product is being operated, which may cause damage to the heat exchanger (200) or may cause vibration or noise during use.

[0212] This is particularly problematic because the plurality of heat exchange parts (210, 220, 230) include a plurality of refrigerant tubes (211, 221, 231) arranged along a plurality of rows extending in the vertical direction (Z) of the outdoor unit (10) and a plurality of heat exchange fins (212, 222, 232) penetrating them, so that if each heat exchange part (210, 220, 230) is not properly fixed, it can easily move, which can be even more problematic.

[0213] Furthermore, as described above, when the heat exchanger (200) has a bent shape including the first linear portion (200A), the second linear portion (200B), and the bending portion (200C), the possibility of the heat exchanger (200) being in an unstable state may increase, so it may be more important to fix a plurality of heat exchange portions (210, 220, 230).

[0214] Accordingly, the heat exchanger (200) of the air conditioner (1) according to one embodiment of the present disclosure may include a structure provided to support both sides of the heat exchanger (200).

[0215] For example, the heat exchanger (200) may include a holder (300, 400, 500) provided to support one side of the heat exchanger (200). As an example, the holder (300, 400, 500) may be provided to support one side of the first linear section (200A).

[0216] The heat exchanger (200) may include a first holder (300) provided to support one side of the first heat exchange unit (210). The first holder (300) may be provided to support a plurality of first refrigerant tubes (211). The first holder (300) may be provided to contact one first heat exchange fin (212a) provided on one side of the plurality of first heat exchange fins (212). The first holder (300) may be provided in parallel with one first heat exchange fin (212a) provided on one side in the direction in which the plurality of first heat exchange fins (212) are arranged.

[0217] For example, the first holder (300) may be coupled to a plurality of first refrigerant tubes (211). For example, the first holder (300) may be penetrated by a plurality of first refrigerant tubes (211).

[0218] For example, a plurality of first refrigerant tubes (211) may be arranged to penetrate the first holder (300) and then connected to the first holder (300) through an expansion process in which each first refrigerant tube (211) is expanded outward by an expansion device.

[0219] For example, the first holder (300) may be provided to support one side of the first heat exchange unit (210) in which the first return tube unit (211b) is provided.

[0220] The first holder (300) can extend in a direction parallel to the first direction (Z). The first holder (300) can extend along the first row.

[0221] The heat exchanger (200) may include a second holder (400) provided to support one side of the second heat exchange unit (220). The second holder (400) may be provided to support a plurality of second refrigerant tubes (221). The second holder (400) may be provided to contact one second heat exchange fin (222a) provided on one side among the plurality of second heat exchange fins (222). The second holder (400) may be provided in parallel with one second heat exchange fin (222a) provided on one side in the direction in which the plurality of second heat exchange fins (222) are arranged.

[0222] For example, the second holder (400) may be coupled to a plurality of second refrigerant tubes (221). For example, the second holder (400) may be penetrated by a plurality of second refrigerant tubes (221).

[0223] For example, a plurality of second refrigerant tubes (221) may be arranged to penetrate the second holder (400) and then connected to the second holder (400) through an expansion process in which each second refrigerant tube (221) is expanded outward by an expansion device.

[0224] For example, the second holder (400) may be provided to support one side of the second heat exchange unit (220) in which the second return tube unit (221b) is provided.

[0225] The second holder (400) can extend in a direction parallel to the first direction (Z). The second holder (400) can extend along the second row.

[0226] The heat exchanger (200) may include a third holder (500) provided to support one side of the third heat exchange unit (230). The third holder (500) may be provided to support a plurality of third refrigerant tubes (231). The third holder (500) may be provided to contact one third heat exchange fin (232a) provided on one side of the plurality of third heat exchange fins (232). The third holder (500) may be provided in parallel with one third heat exchange fin (232a) provided on one side in the direction in which the plurality of third heat exchange fins (232) are arranged.

[0227] For example, the third holder (500) may be coupled to a plurality of third refrigerant tubes (231). For example, the third holder (500) may be penetrated by a plurality of third refrigerant tubes (231).

[0228] For example, a plurality of third refrigerant tubes (231) may be arranged to penetrate the third holder (500) and then connected to the third holder (500) through an expansion process in which each third refrigerant tube (231) is expanded outward by an expansion device.

[0229] For example, the third holder (500) may be provided to support one side of the third heat exchange unit (230) in which the third return tube unit (231b) is provided.

[0230] The third holder (500) can extend in a direction parallel to the first direction (Z). The third holder (500) can extend along the third row.

[0231] The first holder (300), the second holder (400), and the third holder (500) can be coupled to each other. For example, as described below, the first holder (300) and the second holder (400) can be coupled to each other, and the second holder (400) and the third holder (500) can be coupled to each other. That is, the first holder (300), the second holder (400), and the third holder (500) can be fixed to each other. Accordingly, the first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) on one side of the heat exchanger (200) can be stably fixed to each other.

[0232] The holders (300, 400, 500) can be supported by the base (172) of the outdoor unit (10). For example, the first holder (300) can be fastened to the base (172) by a screw, thereby being supported by the base (172). Accordingly, the heat exchanger (200) can be stably supported on the base (172).

[0233] Additionally, the heat exchanger (200) may include an end plate (800) provided to support the other side of the heat exchanger (200). For example, the end plate (800) may be provided to support one side of the second linear section (200B).

[0234] For example, the end plate (800) may be configured to support a plurality of first refrigerant tubes (211). For example, the end plate (800) may be coupled to a plurality of first refrigerant tubes (211). For example, the end plate (800) may be penetrated by a plurality of first refrigerant tubes (211).

[0235] For example, a plurality of first refrigerant tubes (211) may be arranged to penetrate the end plate (800) and then connected to the end plate (800) through an expansion process in which each first refrigerant tube (211) is expanded outward by an expansion device.

[0236] For example, the end plate (800) may be arranged to support one side of the first heat exchanger (210) that is opposite to the other side supported by the first holder (300).

[0237] For example, the end plate (800) may be arranged to contact one of the first heat exchange fins (212) that is positioned on the other side opposite to the first holder (300).

[0238] For example, the end plate (800) may be configured to support a plurality of second refrigerant tubes (221). For example, the end plate (800) may be coupled to a plurality of second refrigerant tubes (221). For example, the end plate (800) may be penetrated by a plurality of second refrigerant tubes (221).

[0239] For example, a plurality of second refrigerant tubes (221) may be arranged to penetrate the end plate (800) and then connected to the end plate (800) through an expansion process in which each second refrigerant tube (221) is expanded outward by an expansion device.

[0240] For example, the end plate (800) may be arranged to support one side of the second heat exchanger (220) that is opposite to the other side supported by the second holder (400).

[0241] For example, the end plate (800) may be arranged to contact one of the second heat exchange fins (222) that is positioned on the other side opposite to the second holder (400).

[0242] For example, the end plate (800) may be configured to support a plurality of third refrigerant tubes (231). For example, the end plate (800) may be coupled to a plurality of third refrigerant tubes (231). For example, the end plate (800) may be penetrated by a plurality of third refrigerant tubes (231).

[0243] For example, a plurality of third refrigerant tubes (231) may be arranged to penetrate the end plate (800) and then connected to the end plate (800) through an expansion process in which each of the third refrigerant tubes (231) is expanded outward by an expansion device.

[0244] For example, the end plate (800) may be arranged to support one side of the third heat exchanger (230) that is opposite to the other side supported by the third holder (500).

[0245] For example, the end plate (800) may be arranged to contact one third heat exchange fin (232) that is positioned on the other side opposite to the third holder (500) among the plurality of third heat exchange fins (232).

[0246] According to one embodiment, the end plate (800) may be formed integrally to support all of the first heat exchanger (210), the second heat exchanger (220), and the third heat exchanger (230).

[0247] The end plate (800) can be supported by the base (172) of the outdoor unit (10). For example, the end plate (800) can be fastened to the base (172) by screws, thereby being supported by the base (172). Accordingly, the heat exchanger (200) can be stably supported on the base (172).

[0248] With this configuration, the first holder (300), the second holder (400), and the third holder (500) can support one side of the heat exchanger (200), and can fix the first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) on one side, respectively. In addition, the end plate (800) can support the other side of the heat exchanger (200), and can fix the first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) on the other side, respectively.

[0249] Fig. 7 is a diagram illustrating a holder included in an outdoor unit of an air conditioner according to various embodiments. Fig. 8 is an enlarged perspective view of a portion of a holder included in an outdoor unit of an air conditioner according to various embodiments. Fig. 9 is an enlarged view of a portion of a holder included in an outdoor unit of an air conditioner according to various embodiments.

[0250] Referring to FIGS. 7 to 9, a first holder (300), which is one of a plurality of holders (300, 400, 500) included in an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure, will be described in detail.

[0251] Referring to FIGS. 7, 8, and 9 (which may be referred to as FIGS. 7 to 9), a first holder (300) included in an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure may include a first support plate (310) and an extension portion (320, 330) extending from the first support plate (310).

[0252] The first support plate (310) may be provided to support a plurality of first refrigerant tubes (211). The first support plate (310) may be coupled to a plurality of first refrigerant tubes (211). For example, the first support plate (310) may be penetrated by a plurality of first refrigerant tubes (211). The first support plate (310) may include a tube penetration portion (311), and the plurality of first refrigerant tubes (211) may be arranged to penetrate the tube penetration portion (311).

[0253] The first support plate (310) may be arranged to contact one first heat exchange fin (212a) arranged on one side among the plurality of first heat exchange fins (212). The first holder (300) may be arranged parallel to one first heat exchange fin (212a) arranged on one side in the direction in which the plurality of first heat exchange fins (212) are arranged.

[0254] The first support plate (310) may be arranged parallel to one first heat exchange fin (212a). The first support plate (310) may extend along the first direction (Z). The first support plate (310) may extend along the first row.

[0255] For example, the first support plate (310) may be formed to have a roughly flat plate shape.

[0256] For example, the first holder (300) may include a first extension portion (320). The first extension portion (320) may extend from the first support plate (310). For example, the first extension portion (320) may extend from one side of the first support plate (310) in a second direction (Y). Here, the second direction (Y) may be orthogonal to the first direction (Z). For example, the second direction (Y) may be parallel to the horizontal direction of the outdoor unit (10).

[0257] The first extension portion (320) may extend from the first support plate (310) in a third direction (X). For example, the first extension portion (320) may extend from the first support plate (310) in a third direction (X) away from the first heat exchange fin (212). Here, the third direction (X) may be orthogonal to the first direction (Z) and the second direction (Y), respectively. For example, the third direction (X) may be parallel to the front-back direction of the outdoor unit (10), and the first extension portion (320) may extend approximately forward (in the +X direction) from the first support plate (310).

[0258] The first extension portion (320) may include a first end (320a) connected to the first support plate (310) at both ends in the third direction (X), and a second end (320b) opposite to the first end (320a). For example, the first end (320a) of the first extension portion (320) may be the rear end of the first extension portion (320), and the second end (320b) may be the front end of the first extension portion (320).

[0259] In other words, the first extension portion (320) can extend from the first end (320a) toward the second end (320b) along the third direction (X). For example, the first extension portion (320) can be formed to have a substantially flat plate shape.

[0260] For example, the first extension portion (320) may include a first through hole (324). The first through hole (324) may be formed so that a fastening member can pass through the first extension portion (320). For example, the first through hole (324) may be formed so that the first extension portion (320) passes through in the second direction (Y). However, this does not necessarily mean that the first through hole (324) must be passed through by the fastening member. If necessary, the first through hole (324) may be provided so that it can be passed through by the fastening member, and thus, it is sufficient if the fastening member can fasten the first extension portion (320) to a component adjacent to the first extension portion (320) (for example, a part of a holder other than the first holder (300) that is in contact with the first extension portion (320).

[0261] For example, the first through hole (324) may be formed by a burring process. For example, the first through hole (324) may be formed by a burring process in which a tool penetrates the first extension (320) from one side of the first extension (320) opposite to the second extension (330) described later toward the second extension (330). Accordingly, a burring portion (324a) formed in the process of forming the first through hole (324) may be provided in the first extension (320). The burring portion (324a) of the first through hole (324) may be formed along the perimeter of the first through hole (324). The burring portion (324a) of the first through hole (324) can extend from one side of the first extension portion (320) toward the second extension portion (330) in a direction toward the second extension portion (330). With this configuration, when a fastening member passes through the first through hole (324), the burring portion (324a) of the first through hole (324) can be provided to support the fastening member, and as the fastening member is stably supported by the burring portion (324a), the fastening between the holders (300, 400, 500) can be maintained more firmly.

[0262] The first through hole (324) may correspond to the first fastening hole (424) of the third extension (420) of the second holder (400) described later.

[0263] For example, the first extension (320) may include a first holder opening (323). The first holder opening (323) may be formed by the first extension (320) penetrating through it.

[0264] For example, the first holder opening (323) may extend in a direction from the second end (320b) of the first extension portion (320) toward the first end (320a). For example, the first holder opening (323) may extend in a third direction (X) from the second end (320b) of the first extension portion (320) toward the first end (320a). In other words, the first holder opening (323) may be formed to have a shape that is concave in a direction from the second end (320b) of the first extension portion (320) toward the first end (320a).

[0265] For example, the first holder opening (323) may be arranged on one side of the first through hole (324) in the first direction (Z). For example, as illustrated in FIGS. 7 to 9, the first holder opening (323) may be arranged vertically upward (in the +Z direction) of the first through hole (324).

[0266] The first holder opening (323) may correspond to the third holder opening (423) of the third extension (430) of the second holder (400) described later.

[0267] The function of the first holder opening (323) is described in detail below.

[0268] For example, a plurality of first through holes (324) may be formed in the first extension portion (320). As illustrated in FIG. 7, the plurality of first through holes (324) may be arranged side by side in the first direction (Z) on the first extension portion (320). As illustrated in FIG. 7, one of the plurality of first through holes (324) may be formed in an upper portion of the first extension portion (320) or an adjacent portion thereof, and the other may be formed in a lower portion of the first extension portion (320) or an adjacent portion thereof.

[0269] For example, a plurality of first through holes (324) formed in the first extension (320) may be formed to correspond to each other.

[0270] For example, a plurality of first holder openings (323) may be formed in the first extension portion (320). As illustrated in FIG. 7, the plurality of first holder openings (323) may be arranged side by side in the first direction (Z) on the first extension portion (320). As illustrated in FIG. 7, one of the plurality of first holder openings (323) may be formed in an upper portion or an adjacent portion of the first extension portion (320), and the other may be formed in a lower portion or an adjacent portion of the first extension portion (320).

[0271] For example, a plurality of first holder openings (323) formed in the first extension (320) may be formed to correspond to each other.

[0272] The structure of the first extension portion (320) described above is only an example of the structure of the first extension portion (320) that can be provided in the first holder (300), and the spirit of the present disclosure is not limited thereto. For example, FIGS. 7 to 9 illustrate an embodiment in which the first extension portion (320) extends along the longitudinal direction of the first support plate (310) and has a length corresponding to the first support plate (310) in the first direction (Z). However, on the contrary, the first extension portion (320) may not extend along the longitudinal direction of the first support plate (310), or its length in the first direction (Z) may be longer or shorter than that of the first support plate (310). For example, the first through hole (324) may not be formed through a burring process, and thus a structure such as a burring portion (324a) may not be provided. For example, the first holder opening (323) may not have the shape of an opening extending from the first end (320a) of the first extension portion (320), and the first end (320a) side may be formed to have the shape of a closed hole. For example, the first through hole (324) may be arranged vertically upward (in the +Z direction) from the first holder opening (323). For example, a plurality of first through holes (324) may be formed to have different shapes from each other. For example, the number of first through holes (324) formed in the first extension portion (320) may be different from that illustrated in FIG. 7. For example, a plurality of first holder openings (323) may be formed to have different shapes from each other. For example, the number of first holder openings (323) formed in the first extension portion (320) may be different from that illustrated in FIG. 7.

[0273] For example, the first holder (300) may include a second extension portion (330). The second extension portion (330) may extend from the first support plate (310). For example, the second extension portion (330) may extend from the other side of the first support plate (310) in the second direction (Y) opposite to the first extension portion (320). The second extension portion (330) may be disposed on one side of the first extension portion (320) in the second direction (Y). The first extension portion (320) and the second extension portion (330) may be disposed to face each other in the second direction (Y).

[0274] The second extension portion (330) may extend in a third direction (X) from the first support plate (310). For example, the second extension portion (330) may extend away from the first heat exchange fin (212) in the third direction (X) from the first support plate (310). For example, the second extension portion (330) may extend approximately forward (in the +X direction) from the first support plate (310).

[0275] The second extension (330) may include a first end (330a) connected to the first support plate (310) at both ends in the third direction (X), and a second end (330b) opposite to the first end (330a). For example, the first end (330a) of the second extension (330) may be the rear end of the second extension (330), and the second end (330b) may be the front end of the second extension (330).

[0276] In other words, the second extension portion (330) can extend from the first end (330a) toward the second end (330b) along the third direction (X). For example, the second extension portion (330) can be formed to have a substantially flat plate shape.

[0277] For example, the second extension portion (330) may include a second through hole (334). The second through hole (334) may be formed so that a fastening member can pass through the second extension portion (330). For example, the second through hole (334) may be formed so that the second extension portion (330) passes through in the second direction (Y). However, this does not necessarily mean that the second through hole (334) must be passed through by the fastening member. If necessary, the second through hole (334) may be provided so that it can be passed through by the fastening member, and thus, it is sufficient if the fastening member can fasten the second extension portion (330) to a configuration adjacent to the second extension portion (330) (for example, a part of a holder other than the first holder (300) that is in contact with the second extension portion (330).

[0278] For example, the portion around the second through hole (334) of the second extension portion (330) may be formed flat. That is, the second extension portion (330) may not have a structure like the burring portion (324a) described above.

[0279] The second through hole (334) may correspond to the first fastening hole (334) of the second extension part (330) of the first holder (300) described later. The second through hole (334) may correspond to the second fastening hole (434) of the fourth extension part (430) of the second holder (400) described later.

[0280] For example, the second extension portion (330) may include a third through hole (335). The third through hole (335) may be formed so that a fastening member can penetrate the second extension portion (330). For example, the third through hole (335) may be formed so that the second extension portion (330) can penetrate in the second direction (Y). However, this does not necessarily mean that the third through hole (335) must be penetrated by the fastening member. If necessary, the third through hole (335) may be formed so that it can be penetrated by the fastening member, and thus, it is sufficient if the fastening member can fasten the second extension portion (330) to a configuration adjacent to the second extension portion (330) (for example, a part of a holder other than the first holder (300) that is in contact with the second extension portion (330).

[0281] For example, the third through hole (335) may be formed by a burring process. For example, the third through hole (335) may be formed by a burring process in which a tool penetrates the second extension (330) from one side of the second extension (330) opposite the first extension (320) toward the first extension (320). Accordingly, a burring portion (335a) formed in the process of forming the third through hole (335) may be provided in the second extension (330). The burring portion (335a) of the third through hole (335) may be formed along the circumference of the third through hole (335). The burring portion (335a) of the third through hole (335) may extend from one side of the second extension (330) facing the first extension (320) in a direction toward the first extension (320). By this configuration, when the fastening member passes through the third through hole (335), the burring portion (335a) of the third through hole (335) can be provided to support the fastening member, and as the fastening member is stably supported by the burring portion (335a), the fastening between the holders (300, 400, 500) can be maintained more firmly.

[0282] The third through hole (335) may correspond to the second fastening hole (525) of the fifth extension (520) of the third holder (500) described later.

[0283] For example, the second extension (330) may include a second holder opening (333). The second holder opening (333) may be formed by the second extension (330) penetrating through it.

[0284] For example, the second holder opening (333) may extend from the second end (330b) of the second extension portion (330) in a direction toward the first end (330a). For example, the second holder opening (333) may extend in a third direction (X) from the second end (330b) of the second extension portion (330) toward the first end (330a). In other words, the second holder opening (333) may be formed to have a shape that is concave in a direction from the second end (330b) of the second extension portion (330) toward the first end (330a).

[0285] For example, the second holder opening (333) may be arranged on one side of the second through hole (334) in the first direction (Z). For example, as illustrated in FIGS. 7 to 9, the second holder opening (333) may be arranged vertically upward (in the +Z direction) of the second through hole (334).

[0286] For example, the second holder opening (333) may be arranged on the other side of the third through hole (335) in the first direction (Z). For example, as illustrated in FIGS. 7 to 9, the second holder opening (333) may be arranged vertically downward (-Z direction) of the third through hole (335).

[0287] The second holder opening (333) may be formed to have a smaller size than the first holder opening (323). For example, the second holder opening (333) may be formed to have a shorter length in the first direction (Z) than the first holder opening (323).

[0288] The function of the second holder opening (333) is described in detail below.

[0289] For example, a plurality of second through holes (334) may be formed in the second extension portion (330). As illustrated in FIG. 7, a plurality of second through holes (334) may be arranged side by side in the first direction (Z) on the second extension portion (330). As illustrated in FIG. 7, one of the plurality of second through holes (334) may be formed in an upper portion or an adjacent portion of the second extension portion (330), and another may be formed in a lower portion or an adjacent portion of the second extension portion (330).

[0290] For example, a plurality of second through holes (334) formed in the second extension (330) may be formed to correspond to each other.

[0291] For example, a plurality of third through holes (335) may be formed in the second extension portion (330). As illustrated in FIG. 7, a plurality of third through holes (335) may be arranged side by side in the first direction (Z) on the second extension portion (330). As illustrated in FIG. 7, one of the plurality of third through holes (335) may be formed in an upper portion or an adjacent portion of the second extension portion (330), and another may be formed in a lower portion or an adjacent portion of the second extension portion (330).

[0292] For example, a plurality of third through holes (335) formed in the second extension (330) may be formed to correspond to each other.

[0293] For example, a plurality of second holder openings (333) may be formed in the second extension portion (330). As illustrated in FIG. 7, the plurality of second holder openings (333) may be arranged side by side in the first direction (Z) on the second extension portion (330). As illustrated in FIG. 7, one of the plurality of second holder openings (333) may be formed in an upper portion or an adjacent portion of the second extension portion (330), and the other may be formed in a lower portion or an adjacent portion of the second extension portion (330).

[0294] For example, a plurality of second holder openings (333) formed in the second extension (330) can be formed to correspond to each other.

[0295] The structure of the second extension portion (330) described above is only an example of the structure of the second extension portion (330) that can be provided in the first holder (300), and the spirit of the present disclosure is not limited thereto. For example, FIGS. 7 to 9 illustrate an embodiment in which the second extension portion (330) extends along the longitudinal direction of the first support plate (310) and has a length corresponding to the first support plate (310) in the first direction (Z); however, on the contrary, the second extension portion (330) may not extend along the longitudinal direction of the first support plate (310), or its length in the first direction (Z) may be longer or shorter than that of the first support plate (310). For example, the third through hole (335) may not be formed through a burring process, and thus a structure such as the burring portion (335a) may not be provided. For example, the second holder opening (333) may not have the shape of an opening extending from the first end (330a) of the second extension portion (330), but may be formed so that the first end (330a) side has the shape of a closed hole. For example, the second through hole (334) may be arranged vertically higher (+Z direction) than the second holder opening (333). For example, the third through hole (335) may be arranged vertically lower (-Z direction) than the second holder opening (333). For example, a plurality of second through holes (334) may be formed to have different shapes from each other. For example, the number of second through holes (334) formed in the second extension portion (330) may be different from that illustrated in FIG. 7. For example, a plurality of third through holes (335) may be formed to have different shapes from each other. For example, the number of third through holes (335) formed in the second extension portion (330) may be different from that illustrated in FIG. 7. For example, a plurality of second holder openings (333) may be formed to have different shapes. For example, the number of second holder openings (333) formed in the second extension portion (330) may be different from that illustrated in FIG. 7.

[0296] In order to enable the manufacturer to easily identify the location of the first holder (300) when installing it in the first heat exchanger (210) without confusion, the first extension portion (320) and the second extension portion (330) of the first holder (300) may be formed to have different shapes. For example, the first extension portion (320) and the second extension portion (330) may be formed to have different lengths extending from the first support plate (310). For example, as illustrated in FIG. 8, at least a portion of the second extension portion (330) may be formed to have a length extending from the first support plate (310) that is different from the length extending from the first support plate (310) of the first extension portion (320).

[0297] As illustrated in FIGS. 7 to 9, the second extension portion (330) may include a first portion (331) extending from the first support plate (310) by a first length (l1), and a second portion (332) extending from the first support plate (310) by a second length (l2) longer than the first length (l1). For example, the first portion (331) of the second extension portion (330) may extend from the first support plate (310) in a third direction (X) by a first length (l1). The second portion (332) of the second extension portion (330) may extend from the first support plate (310) in a third direction (X) by a second length (l2).

[0298] At this time, for example, the first extension (320) can extend at least a majority of the second length (l2) from the first support plate (310).

[0299] By this configuration, the manufacturer of the heat exchanger (200) can easily distinguish between the first extension portion (320) and the second extension portion (330) by recognizing the difference in extension length between the first extension portion (320) and the second extension portion (330). As a result, the manufacturer of the heat exchanger (200) can efficiently perform the process of installing the first holder (300) to the first heat exchange portion (210), and the manufacturing time and manufacturing cost of the product can be reduced.

[0300] For example, the second through hole (334) may be formed in the second part (332) of the second extension (330). For example, the third through hole (335) may be formed in the second part (332) of the second extension (330). For example, the second holder opening (333) may be formed in the second part (332) of the second extension (330). For example, the first holder opening (323) may be arranged so that the position (e.g., vertical height) in the first direction (Z) corresponds to at least a portion of the second part (332) of the second extension (330).

[0301] As described below, the second through hole (334), the third through hole (335), and the second holder opening (333) are components for coupling between a plurality of holders (300, 400, 500), and therefore, by providing them in the second part (332) of the second extension part (330) that extends relatively long from the first support plate (310), the efficiency of the coupling process between the plurality of holders (300, 400, 500) can be improved.

[0302] Likewise, since the first holder opening (323) is configured for coupling between a plurality of holders (300, 400, 500), the efficiency of the coupling process between the plurality of holders (300, 400, 500) can be improved by positioning the second part (332) of the second extension (330) at a position corresponding to the position in the first direction (Z).

[0303] For example, the second portion (332) of the second extension portion (330) may be provided in multiple numbers. As illustrated in FIG. 7, the plurality of second portions (332) of the second extension portion (330) may be arranged side by side and spaced apart from each other in the first direction (Z). As illustrated in FIG. 7, the plurality of second portions (332) of the second extension portion (330) may be formed such that one portion is formed at an upper portion of the second extension portion (330) or an adjacent portion thereof, and the other portion is formed at a lower portion of the second extension portion (330) or an adjacent portion thereof.

[0304] For example, a plurality of second portions (332) of the second extension (330) can be formed to correspond to each other.

[0305] However, the lengths by which the first extension portion (320) and the second extension portion (330) extend from the first support plate (310) are not limited to those described above. For example, the lengths by which the first extension portion (320) and the second extension portion (330) extend from the first support plate (310) may correspond to each other. The first extension portion (320) includes a first portion that extends from the first support plate (310) by a first length and a second portion that extends by a second length that is longer than the first length, and the second extension portion (330) may be formed so that at least a majority thereof extends by the second length.

[0306] The first holder (300) described above with reference to FIGS. 7 to 9 is only an example of a holder of a heat exchanger included in an outdoor unit of an air conditioner according to the concept of the present disclosure, and the concept of the present disclosure is not limited thereto.

[0307] Meanwhile, in the outdoor unit (10) of the air conditioner (1) according to one embodiment of the present disclosure, the second holder (400) and the third holder (500) described above with reference to FIGS. 4 to 6 may be provided to have the same structure as the first holder (300) described above with reference to FIGS. 7 to 9.

[0308] Due to this, the types of holders (300, 400, 500), which are components used to secure the heat exchanger (200), can be standardized. In this case, the molds for manufacturing the holders (300, 400, 500) can be standardized, and the time and cost required for manufacturing, managing, and operating the molds can be reduced. In addition, by using the holders (300, 400, 500) as a standardized component, waste of components and materials can be prevented and / or reduced. In addition, the overall manufacturing time and manufacturing cost of the heat exchanger (200) can be reduced.

[0309] When a plurality of parts arranged side by side to support a plurality of heat exchangers (210, 220, 230) are designed to have a simple structure, even if it is possible to manufacture these parts to have the same structure using the same mold, it can be expected that a process for forming an additional structure to combine them or additional parts may be required.

[0310] However, as described below, the first holder (300), the second holder (400), and the third holder (500) can be manufactured to have the same structure using the same mold, and can be designed to be easily fastened to each other through a simple fastening process using a fastening member.

[0311] Fig. 10 is a diagram illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments. Fig. 11 is an enlarged view illustrating A of Fig. 10 according to various embodiments.

[0312] Referring to FIGS. 10 and 11, the first holder (300), the second holder (400), and the third holder (500) included in the outdoor unit (10) of the air conditioner (1) according to one embodiment of the present disclosure may be arranged in the second direction (Y) on one side of the heat exchanger (200).

[0313] For example, the second holder (400) may be placed on one side of the first holder (300) in the second direction (Y), and the third holder (500) may be placed on one side of the second holder (400) in the second direction (Y). The second holder (300) may be placed between the first holder (300) and the third holder (500).

[0314] For example, among the first holder (300), the second holder (400), and the third holder (500), the first holder (300) may be arranged closest to the first side frame (150). In other words, among the first holder (300), the second holder (400), and the third holder (500), the first holder (300) may be arranged at the outermost side of the heat exchange chamber (R1). Conversely, among the first holder (300), the second holder (400), and the third holder (500), the third holder (500) may be arranged farthest from the first side frame (150). In other words, among the first holder (300), the second holder (400), and the third holder (500), the third holder (500) may be arranged at the innermost side of the heat exchange chamber (R1).

[0315] The first holder (300) and the second holder (400) may be in contact with each other. For example, the first holder (300) and the second holder (400) may be in contact with each other in the second direction (Y). Here, the expression "the first holder (300) and the second holder (400) are in contact with each other in the second direction (Y)" may refer to, for example, that the normal direction of the surface where the first holder (300) and the second holder (400) are in contact with each other is parallel to the second direction (Y).

[0316] The first holder (300) and the second holder (400) can be joined to each other while being in contact with each other. For example, the first holder (300) and the second holder (400) can be joined to each other while being in contact with each other by a first fastening member (F1). For example, the first fastening member (F1) can be joined to the first holder (300) and the second holder (400) while passing through them in the second direction (Y).

[0317] As illustrated in FIG. 10, the first holder (300) and the second holder (400) can be fastened to each other by a plurality of first fastening members (F1). For example, the first holder (300) and the second holder (400) can be fastened to each other by one first fastening member (F1) penetrating the upper portion of each and one first fastening member (F1) penetrating the lower portion of each. As a result, the first holder (300) and the second holder (400) can be more firmly fixed.

[0318] The second holder (400) and the third holder (500) can be in contact with each other. For example, the second holder (400) and the third holder (500) can be in contact with each other in the second direction (Y). Here, the expression "the second holder (400) and the third holder (500) are in contact with each other in the second direction (Y)" may refer to, for example, that the normal direction of the surfaces where the second holder (400) and the third holder (500) are in contact with each other is parallel to the second direction (Y).

[0319] The second holder (400) and the third holder (500) can be joined to each other while being in contact with each other. For example, the second holder (400) and the third holder (500) can be joined to each other while being in contact with each other by a second fastening member (F2). For example, the second fastening member (F2) can be joined to the second holder (400) and the third holder (500) while passing through them in the second direction (Y).

[0320] As illustrated in FIG. 10, the second holder (400) and the third holder (500) can be fastened to each other by a plurality of second fastening members (F2). For example, the second holder (400) and the third holder (500) can be fastened to each other by one second fastening member (F2) penetrating the upper portion of each and one second fastening member (F2) penetrating the lower portion of each. As a result, the second holder (400) and the third holder (500) can be more firmly fixed.

[0321] In a heat exchanger (200) according to one embodiment, a plurality of first refrigerant tubes (211) and a plurality of second refrigerant tubes (221) may be arranged so that their positions in the first direction (Z) are different from each other. Similarly, a plurality of second refrigerant tubes (221) and a plurality of third refrigerant tubes (231) may be arranged so that their positions in the first direction (Z) are different from each other. For example, assuming that N first refrigerant tubes (211) are arranged along the first row in the first heat exchange unit (210), N second refrigerant tubes (221) are arranged along the second row in the second heat exchange unit (220), and N third refrigerant tubes (231) are arranged along the third row in the third heat exchange unit (230) (N is an integer greater than or equal to 1), for any integer K between 1 and N, the second refrigerant tube (221) positioned Kth from the second refrigerant tube (221) positioned highest in the second row may be positioned a predetermined length higher (+Z direction) in the first direction (Z) than the first refrigerant tube (211) positioned Kth from the first refrigerant tube (211) positioned highest in the first row and the third refrigerant tube (231) positioned Kth from the third refrigerant tube (231) positioned highest in the third row. By this arrangement, the heat exchange efficiency of the heat exchanger (200) can be further improved.

[0322] At this time, since the first holder (300), the second holder (400), and the third holder (500) are formed to have corresponding shapes, the second holder (400) can be arranged to be higher by a predetermined length in the first direction (Z) than the first holder (300) and the third holder (500). The upper end of the second holder (400) in the first direction (Z) can be positioned higher than the upper end of the first holder (300) in the first direction (Z) and the upper end of the third holder (500) in the first direction (Z). The lower end of the second holder (400) in the first direction (Z) can be positioned higher than the lower end of the first holder (300) in the first direction (Z) and the lower end of the third holder (500) in the first direction (Z).

[0323] For example, the third holder (500) may be installed in the third heat exchange unit (230) at a position flipped in the first direction (Z) compared to the positions where the first holder (300) and the second holder (400) are installed in the first heat exchange unit (210) and the second heat exchange unit (220), respectively. That is, the third holder (500) may be installed in the third heat exchange unit (230) at a position corresponding to the first holder (300) or the second holder (400) being rotated 180 degrees around the third direction (X) axis.

[0324] Hereinafter, the structures of the first holder (300), the second holder (400), and the third holder (500) will be described in detail. When describing the structures of the second holder (400) and the third holder (500), it is assumed that the second holder (400) and the third holder (500) have structures corresponding to the structures of the first holder (300) described with reference to FIGS. 7 to 9, respectively.

[0325] The first extension (320) of the first holder (300) can extend from one end of the first support plate (310) in the second direction (Y) and the other end opposite to the end adjacent to the second holder (400).

[0326] The second extension (330) of the first holder (300) can extend from one end of the first support plate (310) in the second direction (Y) that is adjacent to the second holder (400).

[0327] The second extension (330) may be positioned on one side of the first extension (320) in the second direction (Y). For example, the second extension (330) may be positioned on one side of the first extension (320) facing the second holder (400). The second extension (330) may be positioned between the first extension (320) and the second holder (400).

[0328] The second extension (330) can be in contact with the second holder (400). The second extension (330) can be coupled to the second holder (400).

[0329] The first return tube portion (211b) of the plurality of first refrigerant tubes (211) can be arranged between the first extension portion (320) and the second extension portion (330).

[0330] The second holder (400) may include a second support plate (410). The second support plate (410) may be provided to support a plurality of second refrigerant tubes (221). The second support plate (410) may be coupled to a plurality of second refrigerant tubes (221). The second support plate (410) may be penetrated by the plurality of second refrigerant tubes (221). The second support plate (410) may be provided to contact one second heat exchange fin (222a) disposed on one side of the plurality of second heat exchange fins (222). The second support plate (410) may be disposed parallel to one second heat exchange fin (222a) disposed on one side in a direction in which the plurality of second heat exchange fins (222) are arranged.

[0331] For example, the second support plate (410) can be formed to have a shape corresponding to that of the first support plate (310).

[0332] The second holder (400) may include a third extension portion (420). The third extension portion (420) may extend from the second support plate (410). The third extension portion (420) may extend from one side of the second support plate (410) in the second direction (Y). For example, the third extension portion (420) may extend from one end of the second support plate (410) in the second direction (Y) that is adjacent to the first holder (300). The third extension portion (420) may extend from the second support plate (410) in the third direction (X).

[0333] For example, the third extension (420) can be formed to have a shape corresponding to the first extension (320).

[0334] The second holder (400) may include a fourth extension portion (430). The fourth extension portion (430) may extend from the second support plate (410). The fourth extension portion (430) may extend from the other side of the second support plate (410) in the second direction (Y) opposite to the third extension portion (420). For example, the fourth extension portion (430) may extend from the other end of the second support plate (410) in the second direction (Y) opposite to the end adjacent to the first holder (300). The fourth extension portion (430) may extend from the second support plate (410) in the third direction (X).

[0335] For example, the fourth extension (430) can be formed to have a shape corresponding to the second extension (330).

[0336] The fourth extension (430) may be positioned on one side of the third extension (420) in the second direction (Y). For example, the fourth extension (430) may be positioned on one side of the third extension (420) facing the third holder (500). The third extension (420) may be positioned between the fourth extension (430) and the first holder (300). The fourth extension (430) may be positioned between the third extension (420) and the third holder (500).

[0337] The third extension (420) can be in contact with the first holder (300). The third extension (420) can be coupled to the first holder (300).

[0338] The fourth extension (430) can be in contact with the third holder (500). The fourth extension (430) can be coupled to the third holder (500).

[0339] The second return tube portion (221b) of the plurality of second refrigerant tubes (221) can be placed between the third extension portion (420) and the fourth extension portion (430).

[0340] The third holder (500) may include a third support plate (510). The third support plate (510) may be provided to support a plurality of third refrigerant tubes (231). The third support plate (510) may be coupled to a plurality of third refrigerant tubes (231). The third support plate (510) may be penetrated by the plurality of third refrigerant tubes (231). The third support plate (510) may be provided to contact one second heat exchange fin (232a) disposed on one side of the plurality of third heat exchange fins (232). The third support plate (510) may be arranged parallel to one third heat exchange fin (232a) disposed on one side in a direction in which the plurality of third heat exchange fins (232) are arranged.

[0341] For example, the third support plate (510) can be formed to have a shape corresponding to the first support plate (310).

[0342] The third holder (500) may include a fifth extension portion (520). The fifth extension portion (520) may extend from the third support plate (510). The fifth extension portion (520) may extend from one side of the second support plate (410) in the second direction (Y). For example, the fifth extension portion (520) may extend from one end of the fifth support plate (510) in the second direction (Y) that is adjacent to the second holder (400). The fifth extension portion (520) may extend from the third support plate (510) in the third direction (X).

[0343] For example, the fifth extension (520) can be formed to have a shape corresponding to the second extension (330).

[0344] The third holder (500) may include a sixth extension portion (530). The sixth extension portion (530) may extend from the third support plate (510). The sixth extension portion (530) may extend from the other side of the second support plate (410) in the second direction (Y) opposite to the fifth extension portion (520). For example, the sixth extension portion (530) may extend from the other end of the fifth support plate (510) in the second direction (Y) opposite to the end adjacent to the second holder (400). The sixth extension portion (530) may extend from the third support plate (510) in the third direction (X).

[0345] For example, the sixth extension (530) can be formed to have a shape corresponding to the first extension (320).

[0346] The sixth extension (530) may be positioned on one side of the fifth extension (520) in the second direction (Y). For example, the sixth extension (530) may be positioned on one side opposite to the direction of the fifth extension (520) toward the second holder (400). The fifth extension (520) may be positioned between the sixth extension (530) and the second holder (400).

[0347] The fifth extension (520) can be in contact with the second holder (400). The fifth extension (520) can be coupled to the second holder (400).

[0348] The third return tube portion (231b) of the plurality of third refrigerant tubes (231) can be placed between the fifth extension portion (520) and the sixth extension portion (530).

[0349] The second extension (330) of the first holder (300) and the third extension (420) of the second holder (400) can be in contact with each other. As the second extension (330) and the third extension (420) are combined in a state of being in contact with each other, the first holder (300) and the second holder (400) can be combined with each other.

[0350] For example, the second extension portion (330) and the third extension portion (420) may be in contact with each other in the second direction (Y). That is, the normal direction of the surface where the second extension portion (330) and the third extension portion (420) are in contact with each other may be parallel to the second direction (Y).

[0351] For example, the second extension portion (330) and the third extension portion (420) may be arranged to be fastened by a first fastening member (F1). The first fastening member (F1) may penetrate the second extension portion (330) and the third extension portion (420) to fasten the second extension portion (330) and the third extension portion (420).

[0352] The second extension portion (330) and the third extension portion (420) may be arranged to contact each other in the direction in which the first fastening member (F1) penetrates the second extension portion (330) and the third extension portion (420). For example, the first fastening member (F1) may be arranged to penetrate the second extension portion (330) and the third extension portion (420) in the second direction (Y), and the second extension portion (330) and the third extension portion (420) may be arranged to contact each other in the second direction (Y). However, the present invention is not limited thereto, and if the direction in which the first fastening member (F1) penetrates the second extension portion (330) and the third extension portion (420) is inclined with respect to the second direction (Y), the second extension portion (330) and the third extension portion (420) may also be arranged to contact each other in the direction inclined with respect to the second direction (Y).

[0353] The second extension portion (330) may be referred to as the first coupling portion (330). The third extension portion (420) may be referred to as the second coupling portion (420).

[0354] The fourth extension (430) of the second holder (400) and the fifth extension (520) of the third holder (500) can be in contact with each other. As the fourth extension (430) and the fifth extension (520) are joined while in contact with each other, the second holder (400) and the third holder (500) can be joined with each other.

[0355] For example, the fourth extension (430) and the fifth extension (520) may be in contact with each other in the second direction (Y). That is, the normal direction of the surface where the fourth extension (430) and the fifth extension (520) are in contact with each other may be parallel to the second direction (Y).

[0356] For example, the fourth extension portion (430) and the fifth extension portion (520) may be arranged to be fastened by a second fastening member (F2). The second fastening member (F2) may penetrate the fourth extension portion (430) and the fifth extension portion (520) to fasten the fourth extension portion (430) and the fifth extension portion (520).

[0357] The fourth extension portion (430) and the fifth extension portion (520) may be arranged to contact each other in the direction in which the second fastening member (F2) penetrates the fourth extension portion (430) and the fifth extension portion (520). For example, the second fastening member (F2) may be arranged to penetrate the fourth extension portion (430) and the fifth extension portion (520) in the second direction (Y), and the fourth extension portion (430) and the fifth extension portion (520) may be arranged to contact each other in the second direction (Y). However, the present invention is not limited thereto, and if the direction in which the second fastening member (F2) penetrates the fourth extension portion (430) and the fifth extension portion (520) is inclined with respect to the second direction (Y), the fourth extension portion (430) and the fifth extension portion (520) may also be arranged to contact each other in the direction inclined with respect to the second direction (Y).

[0358] The fourth extension (430) may be referred to as the third connecting portion (430). The fifth extension (520) may be referred to as the fourth connecting portion (520).

[0359] The return tube portions (211b, 221b, 231b) of the plurality of refrigerant tubes (211, 221, 231) can be covered on one side (-Y direction side based on the drawing) in the second direction (Y) by the first extension portion (320), so as to be protected from external impact. In particular, as described above, the first extension portion (320) can be extended almost entirely from the first support plate (310) by the second length (l2, see FIG. 9), so that the return tube portions (211b, 221b, 231b) can be more effectively protected from external impact.

[0360] The return tube portions (211b, 221b, 231b) of the plurality of refrigerant tubes (211, 221, 231) can be covered by the sixth extension portion (530) on the other side (+Y direction side based on the drawing) in the second direction (Y), so as to be protected from external impact. In particular, since the sixth extension portion (530) is formed to have a shape corresponding to the first extension portion (320), almost all of the sixth extension portion (530) can be extended from the third support plate (510) by the second length (l2, see FIG. 9), thereby more efficiently protecting the return tube portions (211b, 221b, 231b) from external impact.

[0361] Fig. 12 is an enlarged perspective view showing the appearance of an outdoor unit of an air conditioner before combining a plurality of holders according to various embodiments. Fig. 13 is a perspective view showing the appearance of an outdoor unit of an air conditioner after combining a plurality of holders according to various embodiments. Fig. 14 is an enlarged perspective view of a portion of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0362] Referring to FIGS. 12, 13 and 14 (which may be referred to as FIGS. 12 to 14), a first holder (300) and a second holder (400) included in an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure may be arranged to be fastened to each other by a first fastening member (F1) penetrating a second extension portion (330) and a third extension portion (420).

[0363] For example, the first fastening member (F1) may include a screw.

[0364] The second extension portion (330) may include a first fastening hole (334). The first fastening hole (334) of the second extension portion (330) may be provided so that the first fastening member (F1) may pass through it. The first fastening hole (334) of the second extension portion (330) may have a configuration corresponding to the second through hole (334) described with reference to FIGS. 7 to 9.

[0365] The third extension portion (420) may include a first fastening hole (424). The first fastening hole (424) of the third extension portion (420) may be provided so that the first fastening member (F1) may pass through it. The first fastening hole (424) of the third extension portion (420) may have a configuration corresponding to the first through hole (324) described with reference to FIGS. 7 to 9.

[0366] The third extension portion (420) may include a burring portion (424a) formed along the periphery of the first fastening hole (424). The burring portion (424a) formed along the periphery of the first fastening hole (424) of the third extension portion (420) may have a configuration corresponding to the burring portion (324a) formed along the periphery of the first through hole (324) described with reference to FIGS. 7 to 9.

[0367] The first fastening member (F1) may be provided to penetrate the first fastening hole (334) of the second extension portion (330) and the first fastening hole (424) of the third extension portion (330). As illustrated in FIGS. 12 and 13, the first fastening member (F1) may be provided to move from the left (-Y direction side) to the right (+Y direction side) in the second direction (Y) and sequentially penetrate the first fastening hole (334) of the second extension portion (330) and the first fastening hole (424) of the third extension portion (330).

[0368] For example, the first fastening hole (334) of the second extension (330) may be formed to have a larger size than the first fastening hole (424) of the third extension (420). For example, the first fastening hole (334) of the second extension (330) may be formed to have a slit shape in which the length in one direction (for example, the third direction (X) as shown in FIGS. 7 to 9) is longer than the length in the other direction (for example, the first direction (Z) as shown in FIGS. 7 to 9).

[0369] The first fastening hole (334) of the second extension (330) may be formed to have a diameter larger than the diameter of the body (the portion where the screw threads are formed) of the first fastening member (F1) and smaller than the diameter of the head of the first fastening member (F1). The first fastening hole (424) of the third extension (420) may be formed to have a size corresponding to the diameter of the body (the portion where the screw threads are formed) of the first fastening member (F1).

[0370] By this configuration, the manufacturer of the heat exchanger (200) can easily fasten the first holder (300) and the second holder (400) using the first fastening member (F1).

[0371] As described above, the first extension portion (320) may include a first holder opening (323). For example, the first holder opening (323) may be formed to have a shape in which the first extension portion (320) penetrates in the direction in which the first fastening member (F1) penetrates the first fastening hole (334, 424). For example, the first holder opening (323) may be formed to have a shape in which the first extension portion (320) penetrates in the second direction (Y).

[0372] The first fastening hole (334) of the second extension (330) may be arranged on one side of the first holder opening (323) in the direction in which the first fastening member (F1) penetrates the first fastening hole (334) of the second extension (330).

[0373] For example, the first fastening member (F1) may be arranged to penetrate the first fastening hole (334) of the second extension portion (330) in the second direction (Y), and the first fastening hole (334) of the second extension portion (330) may be arranged on one side of the first holder opening (323) in the second direction (Y).

[0374] For example, the first fastening hole (334) of the second extension (330) may be arranged so that its position in the first direction (Z) corresponds to at least a portion of the first holder opening (323).

[0375] The first fastening hole (334) of the second extension (330) can be formed to have a smaller size than the first holder opening (323).

[0376] The first fastening hole (424) of the third extension (420) may be arranged on one side of the first holder opening (323) in the direction in which the first fastening member (F1) penetrates the first fastening hole (424) of the third extension (420).

[0377] For example, the first fastening member (F1) may be arranged to penetrate the first fastening hole (424) of the third extension portion (420) in the second direction (Y), and the first fastening hole (424) of the third extension portion (420) may be arranged on one side of the first holder opening (323) in the second direction (Y).

[0378] For example, the first fastening hole (424) of the third extension (420) may be arranged so that its position in the first direction (Z) corresponds to at least a portion of the first holder opening (323).

[0379] The first fastening hole (424) of the third extension (420) can be formed to have a smaller size than the first holder opening (323).

[0380] Since the first extension (320) includes the first holder opening (323), the entry of the first fastening member (F1) and the entry of the fastening tool (not shown) may not be obstructed by the first extension (320) during the process of fastening the first holder (300) and the second holder (400). As a result, the manufacturer of the heat exchanger (200) can efficiently perform the process of fastening the first holder (300) and the second holder (400).

[0381] As described above, the first holder opening (323) may extend from the second end (320b) of the first extension portion (320). In this case, the manufacturer can more easily position the first fastening member (F1) at the fastening position during the process of fastening the first holder (300) and the second holder (400), and the process of fastening the first holder (300) and the second holder (400) can be performed more efficiently.

[0382] Referring to FIGS. 12 and 13, the second holder (400) and the third holder (500) included in the outdoor unit (10) of the air conditioner (1) according to one embodiment of the present disclosure can be arranged to be fastened to each other by a second fastening member (F2) penetrating the fourth extension portion (430) and the fifth extension portion (520).

[0383] For example, the second fastening member (F2) may include a screw.

[0384] The fourth extension portion (430) may include a second fastening hole (434). The second fastening hole (434) of the fourth extension portion (430) may be provided so that the second fastening member (F2) may pass through it. The second fastening hole (434) of the fourth extension portion (430) may have a configuration corresponding to the second through hole (334) described with reference to FIGS. 7 to 9.

[0385] The fifth extension portion (520) may include a second fastening hole (525). The second fastening hole (525) of the fifth extension portion (520) may be provided so that the second fastening member (F2) may pass through it. The second fastening hole (525) of the fifth extension portion (520) may have a configuration corresponding to the third through hole (335) described with reference to FIGS. 7 to 9.

[0386] The fifth extension portion (520) may include a burring portion (525a) formed along the periphery of the second fastening hole (525). The burring portion (525a) formed along the periphery of the second fastening hole (525) of the fifth extension portion (520) may have a configuration corresponding to the burring portion (335a) formed along the periphery of the third through hole (335) described with reference to FIGS. 7 to 9.

[0387] The second fastening member (F2) may be provided to penetrate the second fastening hole (434) of the fourth extension portion (430) and the second fastening hole (525) of the fifth extension portion (520). As illustrated in FIGS. 12 and 13, the second fastening member (F2) may be provided to move from the left (-Y direction side) to the right (+Y direction side) in the second direction (Y) and sequentially penetrate the second fastening hole (434) of the fourth extension portion (430) and the second fastening hole (525) of the fifth extension portion (520).

[0388] For example, the second fastening hole (434) of the fourth extension (430) may be formed to have a larger size than the second fastening hole (525) of the fifth extension (520).

[0389] The second fastening hole (434) of the fourth extension (430) may be formed to have a diameter larger than the diameter of the body (the portion where the screw threads are formed) of the second fastening member (F2) and smaller than the diameter of the head of the second fastening member (F2). The second fastening hole (525) of the fifth extension (520) may be formed to have a size corresponding to the diameter of the body (the portion where the screw threads are formed) of the second fastening member (F2).

[0390] By this configuration, the manufacturer of the heat exchanger (200) can easily fasten the second holder (400) and the third holder (500) using the second fastening member (F2).

[0391] As described above, the second extension portion (330) may include a second holder opening (333). For example, the second holder opening (333) may be formed to have a shape in which the second extension portion (330) penetrates in the direction in which the second fastening member (F2) penetrates the second fastening hole (434, 525). For example, the second holder opening (333) may be formed to have a shape in which the second extension portion (330) penetrates in the second direction (Y).

[0392] The second holder opening (333) may be arranged on one side of the first holder opening (323) in the direction in which the second fastening member (F2) passes through the second fastening hole (434, 525). For example, the second holder opening (333) may be arranged on one side of the first holder opening (323) in the second direction (Y).

[0393] The second fastening hole (434) of the fourth extension (430) may be arranged on one side of the second holder opening (333) in the direction in which the second fastening member (F2) penetrates the second fastening hole (434) of the fourth extension (430).

[0394] For example, the second fastening member (F2) may be arranged to penetrate the second fastening hole (434) of the fourth extension portion (430) in the second direction (Y), and the second fastening hole (434) of the fourth extension portion (430) may be arranged on one side of the second holder opening (333) in the second direction (Y).

[0395] For example, the second fastening hole (434) of the fourth extension (430) may be arranged so that its position in the first direction (Z) corresponds to at least a portion of the second holder opening (333).

[0396] The second fastening hole (434) of the fourth extension (430) can be formed to have a smaller size than the second holder opening (333).

[0397] The second fastening hole (525) of the fifth extension (520) may be arranged on one side of the second holder opening (333) in the direction in which the second fastening member (F2) penetrates the second fastening hole (525) of the fifth extension (520).

[0398] For example, the second fastening member (F2) may be arranged to penetrate the second fastening hole (525) of the fifth extension portion (520) in the second direction (Y), and the second fastening hole (525) of the fifth extension portion (520) may be arranged on one side of the second holder opening (333) in the second direction (Y).

[0399] For example, the second fastening hole (525) of the fifth extension (520) may be arranged so that its position in the first direction (Z) corresponds to at least a portion of the second holder opening (333).

[0400] The second fastening hole (525) of the fifth extension (520) can be formed to have a smaller size than the second holder opening (333).

[0401] As described above, the second holder opening (333) and the first fastening hole (334) of the second extension portion (330) may be arranged in the first direction (Z) with respect to each other. At this time, the length by which the first holder opening (323) extends in the first direction (Z) may be provided to be longer than the length by which the second holder opening (333) extends in the first direction. For example, when the second holder opening (333) is arranged above the first fastening hole (334) of the second extension portion (330), the first holder opening (323) may be provided to extend in the first direction (Z) by a length that approximately corresponds to or exceeds the length from the upper end of the second holder opening (333) to the lower end of the first fastening hole (334) of the second extension portion (330). Conversely, for example, when the second holder opening (333) is positioned lower than the first fastening hole (334) of the second extension (330), the first holder opening (323) may be provided to extend in the first direction (Z) by a length that approximately corresponds to or exceeds the length from the lower end of the second holder opening (333) to the upper end of the first fastening hole (334) of the second extension (330).

[0402] A portion of the first holder opening (323) and the first fastening holes (334, 424) may be arranged so that their positions in the first direction (Z) correspond to each other. In addition, another portion of the first holder opening (323), the second holder opening (333), and the second fastening holes (434, 525) may be arranged so that their positions in the first direction (Z) correspond to each other.

[0403] Furthermore, the third extension (420) may include a third holder opening (423). The third holder opening (423) may be formed by the third extension (420) penetrating through it.

[0404] For example, the third holder opening (423) can be formed to correspond to the first holder opening (323) described with reference to FIGS. 7 to 9.

[0405] At least a portion of the third holder opening (423) may be positioned on one side of the second holder opening (333) in the direction in which the second fastening member (F2) penetrates the second fastening hole (434, 525). For example, at least a portion of the second holder opening (333) may be positioned on one side of the second holder opening (333) in the second direction (Y).

[0406] At least a portion of the third holder opening (423) may be positioned so as to correspond to the position of the second holder opening (422) in the first direction (Z). At least a portion of the third holder opening (423) may be positioned so as to correspond to the position of the second fastening hole (434, 525) in the first direction (Z).

[0407] The third holder opening (423) can be positioned between the second holder opening (333) and the second fastening hole (434, 525).

[0408] As the second extension part (330) includes the second holder opening (333) and the third extension part (420) includes the third holder opening (423), the entry of the second fastening member (F2) and the entry of the fastening tool (not shown) may not be obstructed by the second extension part (330) and the third extension part (420) during the process of fastening the second holder (400) and the third holder (500). As a result, the manufacturer of the heat exchanger (200) can efficiently perform the process of fastening the second holder (400) and the third holder (500).

[0409] By the configuration described above, the heat exchanger (200) can be stably fixed using only a plurality of holders (300, 400, 500) and fastening members (F1, F2) for connecting them without additional parts, thereby reducing the number of parts required to manufacture the product and reducing manufacturing costs.

[0410] In addition, the heat exchanger (200) can be efficiently fixed through a simple process of fastening multiple holders (300, 400, 500) using fastening members (F1, F2), thereby reducing manufacturing time and manufacturing costs. In addition, when multiple holders (300, 400, 500) are fastened to each other by fastening members (F1, F2), it is expected that the durability of the component can be improved because such fastening is not easily released.

[0411] Furthermore, since the heat exchanger (200) can be manufactured through such a simple manufacturing process, it may be easier to design a system that automates the process.

[0412] Fig. 15 is a diagram illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments before bending. Fig. 16 is a diagram illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments after bending.

[0413] Referring to FIGS. 15 and 16, a heat exchanger (200) included in an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure can be manufactured through a process of bending a heat exchanger extending in one direction.

[0414] Referring to FIG. 15, a plurality of first refrigerant tubes (211) may be arranged to sequentially penetrate a first holder (300), a plurality of first heat exchange fins (212), and an end plate (800) to form a first heat exchange part (210) before bending. A plurality of second refrigerant tubes (221) may be arranged to sequentially penetrate a second holder (400), a plurality of second heat exchange fins (222), and an end plate (800) to form a second heat exchange part (220) before bending. A plurality of third refrigerant tubes (231) may be arranged to sequentially penetrate a third holder (500), a plurality of third heat exchange fins (232), and an end plate (800) to form a third heat exchange part (230) before bending.

[0415] When an expansion device is inserted into one end of the return tube section (211b, 221b, 231b) of a plurality of refrigerant tubes (211, 212, 231) opposite to the return tube section (211b, 221b, 231b) and an expansion process is performed, the plurality of first refrigerant tubes (211) can be respectively combined with the first holder (300), the plurality of first heat exchange fins (212) and the end plate (800), the plurality of second refrigerant tubes (221) can be respectively combined with the second holder (400), the plurality of second heat exchange fins (222) and the end plate (800), and the plurality of third refrigerant tubes (231) can be respectively combined with the third holder (500), the plurality of third heat exchange fins (232) and the end plate (800).

[0416] At this time, the first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) may be provided so that their respective extension lengths are different. For example, as illustrated in FIG. 15, the first heat exchange unit (210) may be provided longer than the second heat exchange unit (220), and the second heat exchange unit (220) may be provided longer than the third heat exchange unit (230). Here, a step of a predetermined length (s1) may exist between one end of the first heat exchange unit (210) in the direction in which the first holder (300) is provided and one end of the second heat exchange unit (220) in the direction in which the second holder (400) is provided. Additionally, a step of a predetermined length (s2) may exist between one end of the direction in which the second holder (400) of the second heat exchange unit (220) is provided and one end of the direction in which the third holder (500) of the third heat exchange unit (230) is provided.

[0417] A bent heat exchanger (200) extending in one direction can be formed by bending the heat exchanger (200) as illustrated in FIG. 16. When the process of bending the heat exchanger (200) is completed, one end in the direction in which the first holder (300) of the first heat exchanger (210) is provided, one end in the direction in which the second holder (400) of the second heat exchanger (220) is provided, and one end in the direction in which the third holder (500) of the third heat exchanger (230) is provided can be arranged parallel to each other, and the steps (s1, s2) as illustrated in FIG. 15 can disappear.

[0418] When the bending process of the heat exchanger (200) is completed, a process of fastening the first holder (300), the second holder (400), and the third holder (500) to each other using fastening members (F1, F2) as described in FIGS. 10 to 14 can be performed, and as a result, the first heat exchange part (210), the second heat exchange part (220), and the third heat exchange part (230) can be stably fixed to each other.

[0419] Fig. 17 is a perspective view illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments. Fig. 18 is an enlarged perspective view of a portion of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0420] In describing a heat exchanger included in an outdoor unit of an air conditioner according to one embodiment of the present disclosure with reference to FIGS. 17 and 18, the same components as those illustrated in FIGS. 1 to 16 are given the same drawing reference numerals and the description may not be repeated.

[0421] Referring to FIGS. 17 and 18, a heat exchanger (200) included in an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure may include a first heat exchange unit (210) and a second heat exchange unit (220), and may not include a third heat exchange unit (230).

[0422] The heat exchanger (200) may include a first holder (300) that supports one side of the first heat exchanger (210). The configuration of the first holder (300) illustrated in FIGS. 17 and 18 corresponds to the configuration of the first holder (300) described with reference to FIGS. 1 to 16, and thus a detailed description thereof may not be repeated.

[0423] The heat exchanger (200) may include a second holder (400) that supports one side of the second heat exchanger (220). The configuration of the second holder (400) illustrated in FIGS. 17 and 18 corresponds to the configuration of the second holder (400) described with reference to FIGS. 1 to 16, and thus a detailed description thereof may not be repeated.

[0424] The first holder (300) and the second holder (400) can be joined to each other while being in contact with each other. For example, the second extension (330) of the first holder (300) and the third extension (420) of the second holder (400) can be joined to each other while being in contact with each other.

[0425] For example, the first holder (300) and the second holder (400) can be fastened by a first fastening member (F1) penetrating the second extension portion (330) and the third extension portion (420).

[0426] The structure for fastening the first holder (300) and the second holder (400) illustrated in FIGS. 17 and 18 corresponds to that described with reference to FIGS. 7 to 16, and thus a detailed description thereof may not be repeated.

[0427] In this way, according to one embodiment of the present disclosure, two holders (300, 400) can be coupled to each other, and two heat exchange parts (210, 220) can be supported and stably fixed by each holder (300, 400).

[0428] Fig. 19 is a perspective view illustrating a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments. Fig. 20 is an enlarged perspective view of a portion of a heat exchanger included in an outdoor unit of an air conditioner according to various embodiments.

[0429] In describing a heat exchanger included in an outdoor unit of an air conditioner according to one embodiment of the present disclosure with reference to FIGS. 19 and 20, the same components as those illustrated in FIGS. 1 to 16 are given the same drawing reference numerals and the description may not be repeated.

[0430] Referring to FIGS. 19 and 20, a heat exchanger (200) included in an outdoor unit (10) of an air conditioner (1) according to one embodiment of the present disclosure may include a first heat exchange unit (210), a second heat exchange unit (220), a third heat exchange unit (230), and a fourth heat exchange unit (240).

[0431] The configurations of the first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) illustrated in FIGS. 19 and 20 correspond to the configurations of the first heat exchange unit (210), the second heat exchange unit (220), and the third heat exchange unit (230) described with reference to FIGS. 1 to 16, and thus, a detailed description thereof may not be repeated.

[0432] The fourth heat exchange unit (240) may include a plurality of fourth refrigerant tubes (241). The plurality of fourth refrigerant tubes (241) may guide the flow of refrigerant for heat exchange with the outside air. A flow path through which the refrigerant flows may be provided on the inside of each of the plurality of fourth refrigerant tubes (241). Each of the plurality of fourth refrigerant tubes (241) may be provided in the shape of a tube having a hollow space formed therein so that the refrigerant as a fluid may flow.

[0433] A plurality of fourth refrigerant tubes (241) may be arranged along a fourth row extending in a first direction (Z). For example, the first direction (Z) may be parallel to the vertical direction (up-down direction) of the outdoor unit (10), and the fourth row may be a vertical row of the outdoor unit (10).

[0434] Each of the plurality of fourth refrigerant tubes (241) may be configured as a hairpin-shaped refrigerant tube.

[0435] For example, each of the plurality of fourth refrigerant tubes (241) may include a fourth return tube portion (241b) provided on one side of each of the fourth refrigerant tubes (241). The fourth return tube portion (241b) may be formed to have a bent shape. The fourth return tube portion (241b) may be formed to have an approximate 'U' shape. For example, the refrigerant flowing in one direction along the linear portion of each of the plurality of fourth refrigerant tubes (241) may turn in the fourth return tube portion (241b) and flow in the opposite direction. The fourth return tube portion (241b) may be provided on one end of the fourth heat exchange portion (240).

[0436] A plurality of first refrigerant tubes (211), a plurality of second refrigerant tubes (221), a plurality of third refrigerant tubes (231), and a plurality of fourth refrigerant tubes (241) can be connected to each other by connecting tubes (260) connected to each end to form one refrigerant tube.

[0437] The heat exchanger (200) may include a plurality of fourth heat exchange fins (242) coupled to a plurality of fourth refrigerant tubes (241). The plurality of fourth heat exchange fins (242) may be coupled to outer peripheral surfaces of the plurality of fourth refrigerant tubes (241). The plurality of fourth heat exchange fins (242) may be penetrated by the plurality of fourth refrigerant tubes (241). The plurality of fourth heat exchange fins (242) may be in contact with the plurality of fourth refrigerant tubes (241). Accordingly, the plurality of fourth heat exchange fins (242) may be provided to increase a heat transfer area between the plurality of fourth refrigerant tubes (241) and the outside air.

[0438] Each of the plurality of fourth heat exchange fins (242) may extend in the first direction (Z). For example, each of the plurality of fourth heat exchange fins (242) may have a long length in the first direction (Z). The plurality of fourth heat exchange fins (242) may be arranged horizontally (on the XY plane) to each other.

[0439] For example, the fourth heat exchange unit (240) may extend along the first direction (Z), which is the direction in which the plurality of fourth refrigerant tubes (241) are arranged. In addition, the fourth heat exchange unit (240) may extend along the direction in which the plurality of fourth heat exchange fins (242) are arranged. The radial width of the fourth refrigerant tube (241) of the fourth heat exchange unit (240) may be set to be shorter than the length of the fourth heat exchange unit (240) in the first direction (Z) and the length of the direction in which the plurality of fourth heat exchange fins (242) of the fourth heat exchange unit (240) are arranged.

[0440] The first heat exchange unit (210), the second heat exchange unit (220), the third heat exchange unit (230), and the fourth heat exchange unit (240) may be arranged in a direction different from the first direction (Z). For example, the first heat exchange unit (210), the second heat exchange unit (220), the third heat exchange unit (230), and the fourth heat exchange unit (240) may be arranged in a horizontal direction (on the XY plane) with respect to each other.

[0441] For example, the second heat exchange unit (220) may be arranged between the first heat exchange unit (210) and the third heat exchange unit (230), and the third heat exchange unit (230) may be arranged between the third heat exchange unit (230) and the fourth heat exchange unit (240). For example, the first heat exchange unit (210), the second heat exchange unit (220), the third heat exchange unit (230), and the fourth heat exchange unit (240) may be arranged along the width direction of each heat exchange unit (210, 220, 230, 240).

[0442] The heat exchanger (200) may include a first holder (300) that supports one side of the first heat exchange unit (210). The configuration of the first holder (300) illustrated in FIGS. 19 and 20 corresponds to the configuration of the first holder (300) described with reference to FIGS. 1 to 16, and thus a detailed description thereof may not be repeated.

[0443] The heat exchanger (200) may include a second holder (400) that supports one side of the second heat exchanger (220). The configuration of the second holder (400) illustrated in FIGS. 19 and 20 corresponds to the configuration of the second holder (400) described with reference to FIGS. 1 to 16, and thus a detailed description thereof may not be repeated.

[0444] The heat exchanger (200) may include a third holder (500) that supports one side of the third heat exchanger (230). The configuration of the third holder (500) illustrated in FIGS. 19 and 20 corresponds to the configuration of the third holder (500) described with reference to FIGS. 1 to 16, and thus a detailed description thereof may not be repeated.

[0445] The heat exchanger (200) may include a fourth holder (600). The fourth holder (600) may be provided to support one side of the fourth heat exchange unit (240). For example, the fourth holder (600) may be provided to support one side of the first linear unit (200A).

[0446] The fourth holder (600) may be provided to support a plurality of fourth refrigerant tubes (241). The fourth holder (600) may be provided to contact one fourth heat exchange fin (242a) arranged on one side among the plurality of fourth heat exchange fins (242). The fourth holder (600) may be arranged parallel to one fourth heat exchange fin (242a) arranged on one side in the direction in which the plurality of fourth heat exchange fins (242) are arranged.

[0447] For example, the fourth holder (600) may be coupled to a plurality of fourth refrigerant tubes (241). For example, the fourth holder (600) may be penetrated by a plurality of fourth refrigerant tubes (241).

[0448] For example, the fourth holder (600) may be provided to support one side of the fourth heat exchange unit (240) in which the fourth return tube unit (241b) is provided.

[0449] The fourth holder (600) can extend in a direction parallel to the first direction (Z). The fourth holder (600) can extend along the fourth row.

[0450] For example, the fourth holder (600) may be provided to have the same structure as the first holder (300) described with reference to FIGS. 7 to 9.

[0451] The fourth holder (600) may include a fourth support plate (610). The fourth support plate (610) may be provided to support a plurality of fourth refrigerant tubes (241). The fourth support plate (610) may be coupled to a plurality of fourth refrigerant tubes (241). The fourth support plate (610) may be penetrated by the plurality of fourth refrigerant tubes (241). The fourth support plate (610) may be provided to contact one fourth heat exchange fin (242a) disposed on one side of the plurality of second heat exchange fins (242). The fourth support plate (610) may be arranged parallel to one fourth heat exchange fin (242a) disposed on one side in a direction in which the plurality of fourth heat exchange fins (242) are arranged.

[0452] For example, the fourth support plate (610) can be formed to have a shape corresponding to that of the first support plate (310).

[0453] The fourth holder (600) may include a seventh extension portion (620). The seventh extension portion (620) may extend from the fourth support plate (610). The seventh extension portion (620) may extend from one side of the fourth support plate (610) in the second direction (Y). For example, the seventh extension portion (620) may extend from one end of the fourth support plate (610) in the second direction (Y) that is adjacent to the third holder (500). The seventh extension portion (620) may extend from the fourth support plate (610) in the third direction (X).

[0454] For example, the seventh extension (620) can be formed to have a shape corresponding to the second extension (330).

[0455] The fourth holder (600) may include an eighth extension portion (630). The eighth extension portion (630) may extend from the fourth support plate (610). The eighth extension portion (630) may extend from the other side of the fourth support plate (610) in the second direction (Y) opposite to the seventh extension portion (620). For example, the eighth extension portion (630) may extend from the other end of the fourth support plate (610) in the second direction (Y) opposite to the end adjacent to the third holder (500). The eighth extension portion (630) may extend from the fourth support plate (610) in the third direction (X).

[0456] For example, the eighth extension (630) can be formed to have a shape corresponding to the first extension (320).

[0457] The eighth extension (630) may be positioned on one side of the seventh extension (620) in the second direction (Y). For example, the eighth extension (630) may be positioned on one side opposite to the direction of the seventh extension (620) toward the third holder (500). The seventh extension (620) may be positioned between the eighth extension (630) and the third holder (500).

[0458] The fourth return tube portion (241b) of the plurality of fourth refrigerant tubes (241) can be placed between the seventh extension portion (620) and the eighth extension portion (630).

[0459] The fourth holder (600) may be placed on one side of the third holder (500) in the second direction (Y). The third holder (500) may be placed between the second holder (400) and the fourth holder (600).

[0460] For example, among the first holder (300), the second holder (400), the third holder (500), and the fourth holder (600), the fourth holder (600) may be positioned furthest from the first side frame (150). In other words, among the first holder (300), the second holder (400), the third holder (500), and the fourth holder (600), the fourth holder (600) may be positioned at the innermost side of the heat exchange chamber (R1).

[0461] In a heat exchanger (200) according to one embodiment, a plurality of third refrigerant tubes (231) and a plurality of fourth refrigerant tubes (241) may be arranged so that their positions in the first direction (Z) are different from each other. For example, assuming that N third refrigerant tubes (231) are arranged along the third row in the third heat exchange unit (230) and N fourth refrigerant tubes (241) are arranged along the fourth row in the fourth heat exchange unit (240) (N is an integer greater than or equal to 1), for any integer K between 1 and N, the fourth refrigerant tube (241) positioned Kth from the fourth refrigerant tube (241) positioned Kth from the third refrigerant tube (231) positioned Kth from the third refrigerant tube (231) positioned Kth from the third refrigerant tube (231) positioned Kth from the third refrigerant tube (231) positioned highest in the third row may be positioned upward (in the +Z direction) by a predetermined length in the first direction (Z). For example, the fourth refrigerant tube (241) positioned Kth from the fourth refrigerant tube (241) positioned at the top in the fourth row may be positioned so that its position in the first direction (Z) roughly corresponds to the second refrigerant tube (221) positioned Kth from the second refrigerant tube (221) positioned at the top in the second row.

[0462] At this time, the fourth holder (600) may be positioned higher than the third holder (500) by a predetermined length in the first direction (Z). The upper end of the fourth holder (600) in the first direction (Z) may be positioned higher than the upper end of the third holder (500) in the first direction (Z). The lower end of the fourth holder (600) in the first direction (Z) may be positioned higher than the lower end of the third holder (500) in the first direction (Z).

[0463] For example, the second holder (400) and the fourth holder (600) can be arranged so that their positions in the first direction (Z) correspond to each other.

[0464] For example, as in the case of the third holder (500), the fourth holder (600) may be installed in the fourth heat exchange unit (240) at a position flipped in the first direction (Z) compared to the positions where the first holder (300) and the second holder (400) are installed in the first heat exchange unit (210) and the second heat exchange unit (220), respectively. That is, the fourth holder (600) may be installed in the fourth heat exchange unit (240) at a position corresponding to the first holder (300) or the second holder (400) being rotated 180 degrees around the third direction (X) axis.

[0465] The return tube portions (211b, 221b, 231b) of the plurality of refrigerant tubes (211, 221, 231) may have one side (-Y direction side based on the drawing) in the second direction (Y) covered by the first extension portion (320), and the other side (+Y direction side based on the drawing) in the second direction (Y) covered by the eighth extension portion (630).

[0466] The first holder (300) and the second holder (400) can be joined to each other while being in contact with each other. For example, the second extension (330) of the first holder (300) and the third extension (420) of the second holder (400) can be joined to each other while being in contact with each other.

[0467] For example, the first holder (300) and the second holder (400) can be fastened by a first fastening member (F1) penetrating the second extension portion (330) and the third extension portion (420).

[0468] The structure for fastening the first holder (300) and the second holder (400) illustrated in FIGS. 19 and 20 corresponds to that described with reference to FIGS. 7 to 16, and thus a detailed description thereof may not be repeated.

[0469] The second holder (400) and the third holder (500) can be joined to each other while being in contact with each other. For example, the fourth extension (430) of the second holder (400) and the fifth extension (520) of the third holder (500) can be joined to each other while being in contact with each other.

[0470] For example, the second holder (400) and the third holder (500) can be fastened by a second fastening member (F2) penetrating the fourth extension (430) and the fifth extension (520).

[0471] The structure for fastening the second holder (400) and the third holder (500) illustrated in FIGS. 19 and 20 corresponds to that described with reference to FIGS. 7 to 16, and thus a detailed description thereof may not be repeated.

[0472] The sixth extension (530) of the third holder (500) and the seventh extension (620) of the fourth holder (600) can be in contact with each other. As the sixth extension (530) and the seventh extension (620) are joined while in contact with each other, the third holder (500) and the fourth holder (600) can be joined with each other.

[0473] For example, the sixth extension (530) and the seventh extension (620) may be in contact with each other in the second direction (Y). That is, the normal direction of the surface where the sixth extension (530) and the seventh extension (620) are in contact with each other may be parallel to the second direction (Y).

[0474] For example, the sixth extension portion (530) and the seventh extension portion (620) may be arranged to be fastened by a third fastening member (F3). The third fastening member (F3) may penetrate the sixth extension portion (530) and the seventh extension portion (620) to fasten the sixth extension portion (530) and the seventh extension portion (620).

[0475] For example, the third fastening member (F3) may include a screw.

[0476] The sixth extension portion (530) and the seventh extension portion (620) may be arranged to contact each other in a direction in which the third fastening member (F3) penetrates the sixth extension portion (530) and the seventh extension portion (620). For example, the third fastening member (F3) may be arranged to penetrate the sixth extension portion (530) and the seventh extension portion (620) in the second direction (Y), and the sixth extension portion (530) and the seventh extension portion (620) may be arranged to contact each other in the second direction (Y). However, the present invention is not limited thereto, and if the direction in which the third fastening member (F3) penetrates the sixth extension portion (530) and the seventh extension portion (620) is inclined with respect to the second direction (Y), the sixth extension portion (530) and the seventh extension portion (620) may also be arranged to contact each other in a direction inclined with respect to the second direction (Y).

[0477] The sixth extension (530) may be referred to as the fifth connecting portion (530). The seventh extension (620) may be referred to as the sixth connecting portion (620).

[0478] The sixth extension portion (530) may include a third fastening hole (534, see FIGS. 12 to 14). The third fastening hole (534) of the sixth extension portion (530) may have a configuration corresponding to the first through hole (324) of the first holder (300) described with reference to FIGS. 7 to 9.

[0479] The sixth extension portion (530) may include a burring portion (534a) formed along the periphery of the third fastening hole (534). The burring portion (534a) formed along the periphery of the third fastening hole (534) of the sixth extension portion (530) may have a configuration corresponding to the burring portion (324a) formed along the periphery of the first through hole (324) described with reference to FIGS. 7 to 9.

[0480] The seventh extension portion (620) may include a third fastening hole (not shown) formed at a position corresponding to the third fastening hole (534) of the sixth extension portion (530). The third fastening hole of the seventh extension portion (620) may have a configuration corresponding to the second through hole (334) of the first holder (300) described with reference to FIGS. 7 to 9.

[0481] The third fastening member (F3) may be provided to penetrate the third fastening hole of the seventh extension portion (620) and the third fastening hole (534) of the sixth extension portion (530). As an example, as illustrated in FIG. 20, the third fastening member (F3) may be provided to move from the right (+Y direction side) to the left (-Y direction side) in the second direction (Y) and sequentially penetrate the third fastening hole of the seventh extension portion (620) and the third fastening hole (534) of the sixth extension portion (530).

[0482] The eighth extension (630) may include a fourth holder opening (633). The fourth holder opening (633) may be formed by the eighth extension (630) penetrating through it.

[0483] For example, the fourth holder opening (633) may be formed to have a shape in which the eighth extension (630) penetrates in the direction in which the third fastening member (F3) penetrates the third fastening hole of the seventh extension (620) and the third fastening hole (534) of the sixth extension (530). For example, the fourth holder opening (633) may be formed to have a shape in which the eighth extension (630) penetrates in the second direction (Y).

[0484] For example, the fourth holder opening (633) may be formed to correspond to the first holder opening (323) described with reference to FIGS. 7 to 9.

[0485] The third fastening hole of the seventh extension (620) may be arranged on one side of the fourth holder opening (633) in the direction in which the third fastening member (F3) penetrates the third fastening hole of the seventh extension (620).

[0486] For example, the third fastening member (F3) may be arranged to penetrate the third fastening hole of the seventh extension (620) in the second direction (Y), and the third fastening hole of the seventh extension (620) may be arranged on one side of the fourth holder opening (633) in the second direction (Y).

[0487] For example, the third fastening hole of the seventh extension (620) may be arranged so that its position in the first direction (Z) corresponds to at least a portion of the fourth holder opening (633).

[0488] The third fastening hole of the seventh extension (620) can be formed to have a smaller size than the fourth holder opening (633).

[0489] The third fastening hole (534) of the sixth extension (530) may be arranged on one side of the fourth holder opening (633) in the direction in which the third fastening member (F3) penetrates the third fastening hole (534) of the sixth extension (530).

[0490] For example, the third fastening member (F3) may be arranged to penetrate the first fastening hole (424) of the third extension (420) in the second direction (Y), and the first fastening hole (424) of the third extension (420) may be arranged on one side of the fourth holder opening (633) in the second direction (Y).

[0491] For example, the third fastening hole (534) of the sixth extension (530) may be arranged so that its position in the first direction (Z) corresponds to at least a portion of the fourth holder opening (633).

[0492] The third fastening hole (534) of the sixth extension (530) can be formed to have a smaller size than the fourth holder opening (633).

[0493] Since the eighth extension (630) includes the fourth holder opening (633), the entry of the third fastening member (F3) and the entry of the fastening tool (not shown) may not be obstructed by the eighth extension (630) during the process of fastening the third holder (500) and the fourth holder (600). As a result, the process of fastening the third holder (500) and the fourth holder (600) can be efficiently performed.

[0494] In this way, according to one embodiment of the present disclosure, four holders (300, 400, 500, 600) can be coupled to each other, and four heat exchange parts (210, 220, 230, 240) can be supported and stably fixed by each holder (300, 400, 500, 600).

[0495] The configuration of a heat exchanger of an air conditioner according to the invention of the present disclosure can be applied not only to an outdoor unit of an air conditioner but also to an indoor unit.

[0496] An outdoor unit of an air conditioner according to one embodiment of the present disclosure may include a plurality of first refrigerant tubes arranged along a first row extending in a first direction, a plurality of second refrigerant tubes arranged along a second row parallel to the first row, a first support plate supporting the plurality of first refrigerant tubes, a first holder including a first extension portion extending from one side of the first support plate and a second extension portion extending from the other side of the first support plate, and a second support plate supporting the plurality of second refrigerant tubes, a second holder including a third extension portion extending from one side of the second support plate, and a fourth extension portion extending from the other side of the second support plate. The second extension portion may be disposed between the first extension portion and the second holder. The third extension portion may be disposed between the fourth extension portion and the first holder. The second extension portion and the third extension portion may be coupled to each other while in contact with each other.

[0497] The second extension portion may extend from one side of the first support plate in a second direction orthogonal to the first direction. The third extension portion may extend from one side of the second support plate in the second direction. The normal direction of the surface where the second extension portion and the third extension portion contact each other may be parallel to the second direction.

[0498] The second extension portion may include a fastening hole configured to be fastened to the third extension portion by a fastening member. The first extension portion may include a holder opening. The fastening hole may be arranged on one side of the holder opening in a direction in which the fastening member is configured to pass through the fastening hole.

[0499] The above fastening hole may be arranged so that its position in the first direction corresponds to at least a portion of the holder opening.

[0500] The first extension portion may include a first end connected to the first support plate and a second end opposite the first end. The holder opening may extend from the second end of the first extension portion in a direction toward the first end.

[0501] The second extension portion may further include a first portion extending from the first support plate by a first length, and a second portion extending from the first support plate by a second length longer than the first length. At least a portion of the second portion of the second extension portion may be arranged so that its position corresponds to that of the holder opening in the first direction. The fastening hole may be formed in the second portion of the second extension portion.

[0502] The first extension portion and the third extension portion may have shapes corresponding to each other. The second extension portion and the fourth extension portion may have shapes corresponding to each other.

[0503] The outdoor unit of the air conditioner may further include a plurality of third refrigerant tubes arranged along a third row parallel to the first row and the second row, and a third holder configured to support the plurality of third refrigerant tubes. The second holder may be disposed between the first holder and the third holder.

[0504] The third holder may include a third support plate penetrated by the plurality of third refrigerant tubes, a fifth extension extending from one side of the third support plate, and a sixth extension extending from the other side of the third support plate. The fifth extension may be positioned between the sixth extension and the second holder. The fourth extension and the fifth extension may be coupled to each other in contact with each other.

[0505] The fourth extension portion may include a fastening hole configured to be fastened to the fifth extension portion by a fastening member. The second extension portion may include a holder opening. The fastening hole may be arranged on one side of the holder opening in a direction in which the fastening member is configured to pass through the fastening hole.

[0506] The second extension portion may include a first fastening hole configured to be fastened by the third extension portion and the first fastening member. The fourth extension portion may include a second fastening hole configured to be fastened by the fifth extension portion and the second fastening member. The first extension portion may include a first holder opening. The second extension portion may include a second holder opening. The first fastening hole may be arranged at one side of the first holder opening in a direction in which the first fastening member is configured to pass through the first fastening hole. The second holder opening may be arranged at one side of the first holder opening in a direction in which the second fastening member is configured to pass through the second fastening hole. The second fastening hole may be arranged at one side of the second holder opening in a direction in which the second fastening member is configured to pass through the second fastening hole.

[0507] The second holder opening and the first fastening hole may be arranged relative to each other in the first direction. The length by which the first holder opening extends in the first direction may be provided to be longer than the length by which the second holder opening extends in the first direction.

[0508] A portion of the first holder opening and the first fastening hole may be arranged so that their positions in the first direction correspond to each other. Another portion of the first holder opening, the second holder opening, and the second fastening hole may be arranged so that their positions in the first direction correspond to each other.

[0509] The third extension portion may include a third holder opening. At least a portion of the third holder opening may be positioned on one side of the second holder opening in a direction such that the second fastening member is configured to penetrate the second fastening hole.

[0510] The first extension portion, the third extension portion, and the sixth extension portion may have shapes corresponding to each other. The second extension portion, the fourth extension portion, and the fifth extension portion may have shapes corresponding to each other.

[0511] An outdoor unit of an air conditioner according to one embodiment of the present disclosure may include a plurality of first refrigerant tubes arranged along a first row extending in a first direction, a plurality of first heat exchange fins each extending in the first direction and penetrated by the plurality of first refrigerant tubes, a plurality of second refrigerant tubes arranged along a second row parallel to the first row, a plurality of second heat exchange fins each extending in the first direction and penetrated by the plurality of second refrigerant tubes, a first holder arranged parallel to one first heat exchange fin arranged on one side in a direction in which the plurality of first heat exchange fins are arranged and supporting the plurality of first refrigerant tubes, and a second holder arranged parallel to one second heat exchange fin arranged on one side in a direction in which the plurality of second heat exchange fins are arranged and supporting the plurality of second refrigerant tubes. The first holder may include a first support plate in contact with the one first heat exchange fin, a first extension portion extending from one end of the first support plate in a second direction orthogonal to the first direction, the other end being adjacent to the second holder, and a second extension portion extending from one end of the first support plate in the second direction, the other end being adjacent to the second holder. The second holder may include a second support plate in contact with the one second heat exchange fin, a third extension portion extending from one end of the second support plate in the second direction, the other end being adjacent to the first holder, and a fourth extension portion extending from one end of the second support plate in the second direction, the other end being opposite to the one end being adjacent to the first holder. The second extension portion and the third extension portion may be fastened by a first fastening member configured to penetrate the second extension portion and the third extension portion in the second direction.

[0512] The second extension portion may include a fastening hole configured to be fastened by the third extension portion and the first fastening member. The first extension portion may include a holder opening. The fastening hole may be arranged on one side of the holder opening in a direction configured to allow the first fastening member to pass through the fastening hole.

[0513] The outdoor unit of the air conditioner may further include a plurality of third refrigerant tubes arranged along a third row parallel to the first row and the second row, a plurality of third heat exchange fins each extending in a first direction and penetrated by the plurality of third refrigerant tubes, and a third holder arranged parallel to one third heat exchange fin disposed on one side in a direction in which the plurality of third heat exchange fins are arranged and configured to support the plurality of third refrigerant tubes. The third holder may include a third support plate in contact with the one third heat exchange fin, a fifth extension portion extending from one of the ends of the third support plate in the second direction adjacent to the second holder, and a sixth extension portion extending from the other end of the third support plate in the second direction opposite to the end adjacent to the second holder. The fourth extension portion and the fifth extension portion may be fastened by a second fastening member configured to penetrate the fourth extension portion and the fifth extension portion in the second direction.

[0514] The second extension portion may include a first fastening hole configured to be fastened by the third extension portion and the first fastening member. The fourth extension portion may include a second fastening hole configured to be fastened by the fifth extension portion and the second fastening member. The first extension portion may include a first holder opening. The second extension portion may include a second holder opening. The first fastening hole may be arranged on one side of the first holder opening in the second direction. The second holder opening may be arranged on one side of the first holder opening in the second direction. The second fastening hole may be arranged on one side of the second holder opening in the second direction.

[0515] A heat exchanger according to one embodiment of the present disclosure may include a first heat exchanger including a plurality of first refrigerant tubes arranged along a first row extending in a first direction and a plurality of first heat exchange fins in contact with the plurality of first refrigerant tubes, a second heat exchanger including a plurality of second refrigerant tubes arranged along a second row parallel to the first row and a plurality of second heat exchange fins in contact with the plurality of second refrigerant tubes, a first holder supporting one side of the first heat exchanger, and a second holder supporting one side of the second heat exchanger. The first holder may include a first support plate penetrated by the first refrigerant tubes, and a first coupling portion extending from one end of the first support plate in a second direction orthogonal to the first direction, the one end being adjacent to the second holder. The second holder may include a second support plate penetrated by the second refrigerant tube, and a second coupling portion extending from one end of the second support plate in the second direction adjacent to the first holder, and in contact with and coupled to the first coupling portion.

[0516] According to the invention, the heat exchanger can be stably maintained in a fixed position by the holder.

[0517] According to the concept of the present disclosure, a heat exchanger can be stably fixed using only a plurality of holders and fastening members for connecting them without additional parts, thereby reducing the number of parts and reducing manufacturing costs.

[0518] According to the invention of the present disclosure, a heat exchanger can be efficiently fixed through a process of fastening a plurality of holders using a fastening member, thereby reducing manufacturing time and manufacturing cost.

[0519] According to the idea of ​​the present disclosure, fastening between holders can be easily performed through holder openings provided in some of the extensions provided in each of a plurality of holders, thereby reducing manufacturing time and manufacturing cost.

[0520] According to the idea of ​​the present disclosure, by unifying the types of multiple holders used to fix a heat exchanger, manufacturing time and manufacturing cost can be reduced.

[0521] The effects according to the idea of ​​the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0522] While the present disclosure has been illustrated and described with reference to various embodiments, it will be understood that these various embodiments are illustrative and not limiting. It will also be understood by those skilled in the art that various changes in form and detail may be made without departing from the true spirit and scope of the present disclosure, including the appended claims and their equivalents. It will also be understood that any embodiment(s) described herein can be used in conjunction with any other embodiment(s) described herein.

Claims

1. A plurality of first refrigerant tubes arranged along a first row extending in a first direction; A plurality of second refrigerant tubes arranged along a second row parallel to the first row; A first holder including a first support plate supporting the plurality of first refrigerant tubes, a first extension portion extending from one side of the first support plate, and a second extension portion extending from the other side of the first support plate; and A second holder including a second support plate supporting the plurality of second refrigerant tubes, a third extension extending from one side of the second support plate, and a fourth extension extending from the other side of the second support plate; The second extension is positioned between the first extension and the second holder, The third extension is positioned between the fourth extension and the first holder, An outdoor unit of an air conditioner in which the second extension part and the third extension part are in contact with each other and are connected to each other.

2. In paragraph 1, The second extension portion extends from one side in a second direction orthogonal to the first direction of the first support plate, The third extension portion extends from one side of the second support plate in the second direction, An outdoor unit of an air conditioner, wherein the normal direction of the surface where the second extension portion and the third extension portion contact each other is parallel to the second direction.

3. In paragraph 1, The second extension portion includes a fastening hole configured to be fastened to the third extension portion by a fastening member, The above first extension portion includes a holder opening, An outdoor unit of an air conditioner, wherein the above fastening hole is arranged on one side of the holder opening in a direction such that the above fastening member penetrates the above fastening hole.

4. In paragraph 3, An outdoor unit of an air conditioner, wherein the above fastening hole is arranged so that the position of the above fastening hole in the first direction corresponds to at least a portion of the holder opening.

5. In paragraph 3, The first extension portion includes a first end connected to the first support plate and a second end opposite to the first end, The above holder opening is an outdoor unit of an air conditioner that extends in a direction from the second end of the first extension part toward the first end.

6. In paragraph 3, The second extension portion further includes a first portion extending from the first support plate by a first length, and a second portion extending from the first support plate by a second length longer than the first length. At least a part of the second portion of the second extension is arranged such that the position of the second portion in the first direction corresponds to the holder opening, The above fastening hole is formed in the second part of the second extension part, and is an outdoor unit of an air conditioner.

7. In paragraph 1, The first extension portion and the third extension portion have shapes corresponding to each other, An outdoor unit of an air conditioner, wherein the second extension portion and the fourth extension portion have shapes corresponding to each other.

8. In paragraph 1, A plurality of third refrigerant tubes arranged along a third row parallel to the first row and the second row; and Further comprising a third holder configured to support the plurality of third refrigerant tubes; The second holder is an outdoor unit of an air conditioner, which is positioned between the first holder and the third holder.

9. In paragraph 8, The third holder above, A third support plate penetrated by the third plurality of refrigerant tubes, A fifth extension extending from one side of the third support plate, Including a sixth extension extending from the other side of the third support plate, The fifth extension is positioned between the sixth extension and the second holder, An outdoor unit of an air conditioner in which the fourth extension part and the fifth extension part are in contact with each other and are connected.

10. In paragraph 9, The fourth extension portion includes a fastening hole configured to be fastened to the fifth extension portion by a fastening member, The second extension portion includes a holder opening, An outdoor unit of an air conditioner, wherein the above fastening hole is arranged on one side of the holder opening in a direction such that the above fastening member penetrates the above fastening hole.

11. In paragraph 9, The second extension portion includes a first fastening hole configured to be fastened by the third extension portion and the first fastening member, The fourth extension portion includes a second fastening hole configured to be fastened to the fifth extension portion by a second fastening member, The first extension portion includes a first holder opening, The second extension portion includes a second holder opening, The first fastening hole is arranged on one side of the first holder opening in a direction such that the first fastening member penetrates the first fastening hole, The second holder opening is arranged on one side of the first holder opening in a direction such that the second fastening member penetrates the second fastening hole, An outdoor unit of an air conditioner, wherein the second fastening hole is arranged on one side of the second holder opening in a direction such that the second fastening member penetrates the second fastening hole.

12. In paragraph 11, The second holder opening and the first fastening hole are arranged in the first direction, An outdoor unit of an air conditioner, wherein the length by which the first holder opening extends in the first direction is longer than the length by which the second holder opening extends in the first direction.

13. In paragraph 11, A part of the first holder opening and the first fastening hole are arranged so that the positions of the part of the first holder opening and the first fastening hole in the first direction correspond to each other, An outdoor unit of an air conditioner, wherein the other part of the first holder opening, the second holder opening and the second fastening hole are arranged so that the positions of the other part of the first holder opening, the second holder opening and the second fastening hole in the first direction correspond to each other.

14. In paragraph 11, The third extension portion includes a third holder opening, An outdoor unit of an air conditioner, wherein at least a portion of the third holder opening is arranged on one side of the second holder opening in a direction such that the second fastening member penetrates the second fastening hole.

15. In paragraph 9, The first extension portion, the third extension portion and the sixth extension portion have shapes corresponding to each other, An outdoor unit of an air conditioner, wherein the second extension portion, the fourth extension portion, and the fifth extension portion have shapes that correspond to each other.

Images