Hanging type air conditioner indoor unit

Abstract

The utility model provides a hanging type air conditioner indoor unit which comprises a machine shell, the machine shell comprises an outer cover, the top and the bottom of the outer cover are provided with an air conditioner air inlet and an air conditioner air outlet respectively, and the outer cover is provided with a step part; the refrigerant detection assembly is used for detecting leaked refrigerant and comprises a refrigerant detection sensor; the fixing base comprises a shell, a fixing base and a fixing base, and a bin used for installing the refrigerant detection sensor is formed in the shell; the mounting part is connected to the shell, and a single through hole is formed in the mounting part; the limiting part is vertically connected to the mounting part, a positioning structure is defined by the limiting part and the mounting part, and the positioning structure is matched with the step part; a fixing hole is formed in the step part, and the fastener penetrates through the through hole and is connected into the fixing hole, so that the refrigerant detection assembly is fixed on the outer cover. According to the utility model, the limiting part and the mounting part are connected to form the positioning structure matched with the step part, so that the mounting universality of the fixing seat is improved, the single fixing hole is matched with the positioning structure for mounting and positioning, and the fixing seat has the advantages of convenience and rapidness in disassembly and assembly.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, and in particular relates to a wall-mounted air conditioner indoor unit. Background Technology

[0002] A wall-mounted air conditioner indoor unit typically consists of a casing and an indoor heat exchanger. The indoor heat exchanger, located inside the casing, is a key component for the air conditioner's cooling and heating functions. During operation, refrigerant circulates in the refrigerant piping within the indoor heat exchanger. Due to sealing issues, refrigerant leaks may occur. Currently, most environmentally friendly refrigerants are flammable. If a leaked amount accumulates and reaches a flammable concentration, it can be ignited, threatening the safety of people and buildings. Therefore, installing refrigerant detection sensors for refrigerant leak detection is increasingly becoming a new requirement for ensuring the safe operation of air conditioner indoor units.

[0003] In related technologies, most of the wall-mounted air conditioner indoor units that have already been launched on the market did not consider reserving installation positions for refrigerant detection sensors during the early research and development stage. Furthermore, for wall-mounted air conditioners with different casing structures, due to differences in their internal piping layout and refrigerant leakage flow channels, it is impossible to meet the needs of different wall-mounted units for later installation of refrigerant detection sensors.

[0004] Furthermore, existing refrigerant detection sensors are typically installed at the air outlet or in a mounting position on the side of the base of the casing. Sensors installed at the air outlet negatively impact the overall appearance of the unit, detracting from its aesthetics. Sensors mounted in a mounting position on the side of the base have a complex installation structure, usually requiring multiple screws for fixation. Their concealed location makes disassembly and maintenance difficult; additionally, aligning the screw holes during installation is challenging, requiring two hands and hindering assembly efficiency. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore,

[0006] According to embodiments of this disclosure, a wall-mounted air conditioner indoor unit is provided, comprising:

[0007] Housing, the housing comprising:

[0008] An outer cover defines an inner space. The top and bottom of the outer cover are respectively provided with an air conditioning inlet and an air conditioning outlet that communicate with the inner space. The outer cover has a stepped portion.

[0009] A panel is disposed on one side of the outer cover and defines an air cavity with the outer cover. The air cavity is connected to the receiving space, and the stepped portion is located inside the air cavity.

[0010] An indoor heat exchanger is disposed in the aforementioned accommodating space;

[0011] An indoor fan is installed in the aforementioned accommodating space;

[0012] A refrigerant detection assembly for detecting refrigerant leaks in an indoor heat exchanger, the refrigerant detection assembly comprising:

[0013] Refrigerant detection sensor;

[0014] The fixing base includes:

[0015] The outer casing has a compartment formed therein for mounting the refrigerant detection sensor;

[0016] The mounting part is connected to the outer shell and located outside the compartment, and the mounting part is provided with a single through hole for fasteners to pass through;

[0017] A limiting part is vertically connected to the mounting part and defines a positioning structure with the mounting part, the positioning structure being adapted to the step part;

[0018] A fixing hole is provided on the stepped portion, and the fastener passes through the through hole and is connected to the fixing hole so that the refrigerant detection component is fixed on the outer cover.

[0019] The above technical solution has the following advantages or beneficial effects: the connection between the limiting part and the mounting part forms a positioning structure that matches the step part, improving the installation versatility of the fixing seat. A single fixing hole, in conjunction with the positioning structure, is used for installation and positioning, effectively preventing rotational displacement of the fixing seat. This not only allows production staff to accurately locate the fixing hole, saving time and effort, but also allows the refrigerant detection component to be fixed with only one fastener, offering the advantages of convenient and quick assembly and disassembly. Furthermore, for different wall-mounted air conditioner casing structures, even if no installation position is pre-reserved, when a refrigerant detection sensor needs to be added, only corresponding fixing holes need to be added to the step of the outer casing to meet the installation requirements, solving the technical problem of difficult later installation.

[0020] According to an embodiment of this disclosure, the first side of the outer cover is provided with a filter screen installation and removal port that connects the receiving space and the air cavity. The filter screen installation and removal port has a first side wall that abuts against the filter screen. The first side wall is connected to the first side to form the stepped portion.

[0021] The above technical solution has the following advantages or beneficial effects: using the stepped part formed by the edge of the filter screen disassembly port as the installation base of the fixing seat, there is no need to set up and install other support structures, which reduces the number and complexity of parts, and reduces production costs and installation difficulty.

[0022] According to an embodiment of this disclosure, a reinforcing portion is provided on the side of the limiting portion away from the step portion, and the reinforcing portion is connected to the mounting portion.

[0023] The above technical solution has the following advantages or beneficial effects: by setting a reinforcing part, the structural strength of the limiting part can be effectively enhanced, preventing it from deforming or breaking due to force during installation.

[0024] According to an embodiment of this disclosure, the refrigerant detection sensor includes a body and a wiring portion. The wiring portion extends from one end of the body in its length direction. The body is housed in the compartment. The compartment has a clearance notch corresponding to the wiring portion, and the wiring portion extends out of the compartment through the clearance notch.

[0025] The above technical solution has the following advantages or beneficial effects: the wiring part extends out of the compartment through the avoidance notch, making the installation and wiring of the refrigerant detection sensor more intuitive and convenient, and also facilitating the connection with the electrical control components of the indoor unit.

[0026] According to an embodiment of this disclosure, the wiring portion is covered by a housing cover, which is detachably connected to the outer casing, and the housing cover has a wire-passing portion.

[0027] The above technical solution has the following advantages or beneficial effects: by setting a cover, not only is the wiring part effectively protected, but users can also be prevented from contacting the live wiring part, thus reducing the risk of electric shock.

[0028] According to an embodiment of this disclosure, the housing has a surrounding plate that surrounds the outside of the wiring portion, and the side wall of the surrounding plate that is away from the main body portion is defined as a second side wall;

[0029] The shell cover has an internal cavity and an open opening on one side. An elastic hook protrudes from the side wall of the shell cover. The elastic hook has a snap-fit ​​surface away from the main body. A snap-fit ​​portion that is adapted to connect with the second side wall is defined between the snap-fit ​​surface and the bottom wall of the shell cover.

[0030] The enclosure is assembled into the cavity through the opening along the first direction, and the enclosure presses the elastic hook until the second side wall is clamped in the snap-fit ​​portion.

[0031] The above technical solution has the following advantages or beneficial effects: the elastic hook of the above structure is a one-way hook. By using the one-way hook in conjunction with the bottom wall to clamp the second side wall, the shell cover and the outer shell are separated in one direction. Users cannot disassemble the outer shell and the shell cover without tools, which enhances the sealing and connection stability of the shell cover and the outer shell, and effectively achieves the effects of anti-disassembly and anti-electric shock.

[0032] According to an embodiment of this disclosure, a plurality of limiting protrusions are provided on the bottom wall of the shell cover, and the limiting protrusions are adapted to abut against the second side wall.

[0033] The above technical solution has the following advantages or beneficial effects: by setting the limiting protrusion, the fixing effect between the cover and the outer shell can be enhanced, further preventing the cover from loosening or shifting during use.

[0034] According to an embodiment of this disclosure, the elastic hook has a guide surface on the side facing the body portion, and the guide surface and the first plane form an acute angle with the opening facing the bottom wall, the first plane being the plane where the side wall to which the elastic hook is connected is located.

[0035] The above technical solution has the following advantages or beneficial effects: by setting a guide surface, the cover can be smoothly snapped into the outer shell during the assembly process, which improves the assembly efficiency of the refrigerant detection component.

[0036] According to an embodiment of this disclosure, the side of the housing facing the panel is open as an installation port, and the refrigerant detection sensor is adapted to be installed into the compartment through the installation port. A detection port is provided on the side of the housing facing the indoor heat exchanger, and the detection port is provided corresponding to the detection part of the refrigerant detection sensor.

[0037] The above technical solution has the following advantages or beneficial effects: by setting a detection port, the airflow passes through the detection port and comes into contact with the detection unit, thereby enabling the detection unit to detect leaked refrigerant; at the same time, the detection port is set towards the indoor heat exchanger, which helps to improve the sensitivity and accuracy of refrigerant leak detection.

[0038] Another aspect of this application provides a wall-mounted air conditioner indoor unit, which includes:

[0039] Housing, the housing comprising:

[0040] An outer cover defines an inner space. The top and bottom of the outer cover are respectively provided with an air conditioning inlet and an air conditioning outlet that communicate with the inner space. The outer cover has a stepped portion.

[0041] A panel is disposed on one side of the outer cover and defines an air cavity with the outer cover. The air cavity is connected to the receiving space, and the stepped portion is located inside the air cavity.

[0042] An indoor heat exchanger is disposed in the aforementioned accommodating space;

[0043] An indoor fan is installed in the aforementioned accommodating space;

[0044] A refrigerant detection assembly for detecting refrigerant leaks in an indoor heat exchanger, the refrigerant detection assembly comprising:

[0045] Refrigerant detection sensor;

[0046] The housing has an internal compartment for mounting the refrigerant detection sensor, and the exterior of the housing has a mounting portion with through holes.

[0047] A limiting part is vertically connected to the mounting part, and the limiting part and the mounting part define a positioning structure that is adapted to the stepped part;

[0048] The stepped portion is provided with a fixing hole for fastener connection. The fastener passes through the through hole and is connected to the fixing hole so that the refrigerant detection component is fixed to the outer cover.

[0049] The above technical solution has the following advantages or beneficial effects: the refrigerant detection component cooperates with the stepped part of the outer cover through the mounting part and limiting part on the outer shell, and only one fastener is needed to fix it to the outer cover, which simplifies the installation steps and improves the installation efficiency; the cooperation between the positioning structure and the stepped part, combined with a single fastener, effectively restricts the movement of the refrigerant detection component, prevents loosening caused by vibration or external force, and enhances the installation stability. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a three-dimensional structural view of the indoor unit of a wall-mounted air conditioner according to the embodiments of this disclosure;

[0052] Figure 2 This is a front view of the indoor unit of a wall-mounted air conditioner according to an embodiment of this disclosure;

[0053] Figure 3 This is a front view of the indoor unit of a wall-mounted air conditioner with the air guide plate omitted according to the embodiments of this disclosure;

[0054] Figure 4 yes Figure 3 A cross-sectional view along the AA direction;

[0055] Figure 5 This is a schematic diagram showing the connection between the outer casing and the refrigerant detection assembly according to an embodiment of this disclosure;

[0056] Figure 6 This is a schematic diagram of the refrigerant detection assembly according to the embodiments of this disclosure;

[0057] Figure 7 This is a partial schematic diagram of the outer casing and refrigerant detection assembly according to an embodiment of this disclosure;

[0058] Figure 8 This is a partial exploded view of the outer casing and refrigerant detection assembly according to the embodiments of this disclosure;

[0059] Figure 9 This is a schematic diagram of the structure of the filter screen installed on the outer cover according to the embodiments of this disclosure;

[0060] Figure 10 This is a schematic diagram of the connection between the outer casing and the refrigerant detection component from another perspective according to an embodiment of this disclosure;

[0061] Figure 11 This is a structural schematic diagram of the fixing base according to the embodiments of this disclosure;

[0062] Figure 12 This is a structural schematic diagram of the fixing seat from another perspective according to an embodiment of this disclosure;

[0063] Figure 13 This is a cross-sectional view of the refrigerant detection assembly according to an embodiment of this disclosure;

[0064] Figure 14 This is a schematic diagram of the structure of the refrigerant detection assembly according to another embodiment of this disclosure. Figure 1 ;

[0065] Figure 15 This is a schematic diagram of the structure of the refrigerant detection assembly according to another embodiment of this disclosure. Figure 2 ;

[0066] Figure 16 This is a schematic diagram of the structure of the refrigerant detection assembly according to another embodiment of the present disclosure. Figure 2 ;

[0067] Figure 17 The schematic diagram of the shell cover according to the embodiments of this disclosure Figure 1 ;

[0068] Figure 18 The schematic diagram of the shell cover according to the embodiments of this disclosure Figure 2 ;

[0069] Figure 19 This is a cross-sectional view of the assembly process of the shell cover and the fixing seat according to the embodiments of this disclosure;

[0070] Figure 20 This is a cross-sectional view of the shell cover and the fixing base after assembly according to the embodiments of this disclosure;

[0071] Figure 21This is a front view of the refrigerant detection assembly according to an embodiment of this disclosure;

[0072] Figure 22 yes Figure 21 A cross-sectional view along the CC direction.

[0073] In the above figures: 100, indoor unit of wall-mounted air conditioner; 1, housing; 11, air inlet; 12, air outlet; 13, outer cover; 131, step; 1311, first side wall; 1312, first side; 132, snap-fit ​​groove; 134, fixing hole; 14, panel; 15, base; 16, air guide plate; 17, air inlet grille; 18, filter removal port; 2, indoor fan; 3, indoor heat exchanger; 4, filter; 5, refrigerant detection sensor; 51, main body; 5, wiring section. 2; Detection section 53; Fixing base 6; Outer shell 61; Compartment 611; Circumvention notch 6111; Enclosure 612; Second side wall 6121; Limiting section 62; Mounting section 63; Through hole 64; Reinforcing section 65; Detection port 66; Mounting port 67; Wire passage hole 68; Shell cover 7; Bottom wall 71; Elastic hook 72; Snap-fit ​​surface 721; Guide surface 722; Connecting arm 723; Connecting port 73; Limiting protrusion 74; Wire passage section 75; Fastener 8. Detailed Implementation

[0074] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0075] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0076] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0077] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0078] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0079] This utility model proposes a wall-mounted air conditioner indoor unit 100, as described below. Figures 1-22 The indoor unit 100 of a wall-mounted air conditioner is described. Among other things, Figure 1 , Figure 2 This is an external view of the indoor unit 100 of a wall-mounted air conditioner. The indoor unit 100 is part of the air conditioner and is installed indoors for heat exchange with the indoor environment. The air conditioner also includes an outdoor unit, which is typically installed outdoors and used to transfer heat from the indoor environment to the outside.

[0080] refer to Figures 1-3 In one illustrative embodiment of the wall-mounted air conditioner indoor unit 100 provided by this utility model, the wall-mounted air conditioner indoor unit 100 may include a housing 1. The housing 1 is installed indoors, and the housing 1 forms the overall appearance of the wall-mounted air conditioner indoor unit 100.

[0081] refer to Figure 1 The housing 1 may include an outer cover 13, which defines an accommodating space. The accommodating space is used to house and fix various components in the wall-mounted air conditioner indoor unit 100, which can prevent external objects from colliding with the various components inside the housing 1, thereby improving the reliability of the wall-mounted air conditioner indoor unit 100 during transportation or installation.

[0082] In some embodiments of this application, reference continues to be made to Figure 1 The housing 1 may include an air conditioning inlet 11.

[0083] The air conditioning inlet 11 is connected to the housing space. As the inlet for external air to flow into the casing 1, the air conditioning inlet 11 allows indoor air to enter the housing space through the air conditioning inlet 11.

[0084] Continue to refer to Figure 1 In some embodiments of this application, the wall-mounted air conditioner indoor unit 100 may include an air inlet grille 17.

[0085] The air intake grille 17 is located at the air conditioning air intake 11 to filter the air and prevent larger impurities from entering the containment space.

[0086] In some embodiments of this application, reference is made to Figure 3 The housing 1 may include an air conditioning vent 12.

[0087] The air conditioner outlet 12 is connected to the housing space. The air conditioner outlet 12 serves as the outlet for the heat exchange airflow inside the casing 1, allowing the airflow in the housing space to flow out through the air conditioner outlet 12.

[0088] refer to Figure 2 The indoor unit 100 of the wall-mounted air conditioner may include an air guide plate 16.

[0089] The air guide plate 16 is rotatably connected to the housing 1 and is located at the air conditioning outlet 12. The air guide plate 16 opens or closes the air conditioning outlet 12. When the air guide plate 16 opens the air conditioning outlet 12, it is used to guide the heat exchange airflow.

[0090] The housing 1 may include a base 15. The base 15 forms the rear side of the wall-mounted air conditioner indoor unit 100 and is adapted to be mounted on a wall.

[0091] The outer cover 13 is roughly in the shape of a cuboid frame. The rear side of the outer cover 13 is open, and the outer cover 13 covers the front side of the base 15 and is connected to the base 15 to form the housing 1. The base is located in the receiving space.

[0092] The air conditioning inlet 11 is located at the top of the outer cover 13. The air conditioning outlet 12 is located at the bottom front side of the outer cover 13.

[0093] In some embodiments of this application, the air conditioner outlet 12 is elongated and can extend along the length of the casing 1, improving the aesthetics of the wall-mounted air conditioner indoor unit 100. In this embodiment, when the wall-mounted air conditioner indoor unit 100 is working, the indoor unit 100 receives air from the top and discharges air to the front, facilitating installation.

[0094] In some embodiments of this application, the outer cover 13 may be integrally formed. Of course, in other embodiments, the outer cover 13 may be separately formed.

[0095] It should be noted that the directions described in the text are based on the direction the user faces when viewing the indoor unit of the wall-mounted air conditioner. Specifically, the side of the indoor unit facing the user when in use is defined as the front side, and the opposite side is defined as the rear side. The left and right sides are distinguished by the direction the user faces when viewing the indoor unit.

[0096] In some embodiments of this application, reference is made to Figure 4The indoor unit 100 of the wall-mounted air conditioner may include an indoor heat exchanger 3. The indoor heat exchanger 3 extends along the length of the casing 1 and is disposed within a receiving space for heat exchange with the airflow inside the casing 1.

[0097] In some embodiments of this application, the indoor unit 100 of the wall-mounted air conditioner may include an indoor fan 2.

[0098] The indoor fan 2 is installed in the housing space and is used to drive the indoor air outside the housing 1 into the housing space inside the housing 1 through the air inlet. The indoor fan 2 drives the air in the housing space to flow along the air inlet 11 towards the air outlet 12.

[0099] The indoor heat exchanger 3 is mounted on the base 15, and can be located inside the air conditioner inlet 11. The indoor fan 2 is mounted on the base 15, and can be located on the side of the indoor heat exchanger 3 away from the air conditioner inlet 11. That is, the indoor fan 2 is positioned relative to the indoor heat exchanger 3 closer to the air conditioner outlet 12. Specifically, in the airflow direction within the casing 1, the indoor fan 2 is located downstream of the indoor heat exchanger 3.

[0100] When the indoor unit 100 of the wall-mounted air conditioner is running, driven by the indoor fan 2, indoor air enters the containment space through the air conditioner inlet 11. The indoor air in the containment space flows through the indoor heat exchanger 3 for heat exchange. The heat-exchanged airflow is discharged to the outside through the air conditioner outlet 12, thereby enabling the air conditioner to cool and heat, play a role in regulating the indoor temperature, and achieve the user's comfortable temperature.

[0101] An outdoor unit for an air conditioner may include an outdoor unit housing. The outdoor unit housing may contain an installation cavity.

[0102] The outdoor unit housing may include an outdoor air inlet. The outdoor air inlet may communicate with the mounting cavity. The outdoor air inlet can be used to introduce outdoor air into the mounting cavity.

[0103] The outdoor unit housing may include an outdoor air outlet. The outdoor air outlet may communicate with the mounting cavity. The outdoor air outlet can be used to exhaust air from inside the mounting cavity to the outside of the mounting cavity.

[0104] An outdoor unit for an air conditioner may include an outdoor heat exchanger. The outdoor heat exchanger may be located inside an installation cavity.

[0105] An outdoor unit for an air conditioner may include an outdoor fan. The outdoor fan may be installed inside the mounting cavity.

[0106] The rotation of the outdoor fan causes outdoor air to enter the installation cavity through the outdoor air inlet and exchange heat with the outdoor heat exchanger. After heat exchange, the outdoor air flows out of the installation cavity through the outdoor air outlet.

[0107] An air conditioner may include a compressor. The compressor is located within the mounting cavity.

[0108] Air conditioners may include a throttling device. The throttling device is used to limit airflow. The throttling device can be provided in the indoor unit or outdoor unit of a wall-mounted air conditioner.

[0109] An air conditioner performs a refrigeration cycle by using a compressor, condenser, throttling device, and indoor heat exchanger. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0110] The compressor compresses the refrigerant gas at low temperature and low pressure and discharges it at high temperature and high pressure. The discharged refrigerant gas flows into the condenser.

[0111] The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0112] The throttling device causes the high-temperature, high-pressure liquid refrigerant condensed in the condenser to expand into a low-pressure liquid refrigerant.

[0113] The refrigerant that expands in the throttling device evaporates in the indoor heat exchanger 3, and the refrigerant gas in a low temperature and low pressure state is returned to the compressor.

[0114] The indoor heat exchanger 3 achieves a cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material to be cooled. Throughout the cycle, the air conditioner can regulate the temperature of the indoor space.

[0115] Of the indoor heat exchanger 3 and the outdoor heat exchanger, one is a condenser and the other is an indoor heat exchanger 3. When the indoor heat exchanger 3 is used as a condenser, the air conditioner is used as a heater in heating mode. When the indoor heat exchanger 3 is used as an indoor heat exchanger 3, the air conditioner is used as a cooler in cooling mode.

[0116] The housing may include a panel 14. The panel 14 is located on one side of the outer cover 13, and the panel 14 is detachably connected to the outer cover 13. By detachably connecting the panel 14 to the outer cover 13, the panel 14 can be removed to inspect the interior of the housing 100 when the indoor unit of the air conditioner malfunctions.

[0117] During the operation of the indoor unit of the wall-mounted air conditioner, refrigerant leakage may occur in the indoor heat exchanger 3. Therefore, in order to detect the refrigerant leakage in the indoor heat exchanger 3, in this embodiment, the indoor unit of the wall-mounted air conditioner may include a refrigerant detection component. The refrigerant detection component is installed on the outer casing 13.

[0118] refer to Figure 5 The refrigerant detection assembly may include a refrigerant detection sensor 5 for detecting refrigerant leakage from the indoor heat exchanger 3.

[0119] The refrigerant detection assembly may include a mounting base 6, which is mounted on the outer casing 13 to provide a mounting position for the refrigerant detection sensor 5.

[0120] To facilitate the installation of the refrigerant detection component, in this embodiment, the refrigerant detection component is directly installed on the stepped portion 131 of the outer cover 13, without the need for a separate support or installation structure.

[0121] Continue to refer to Figure 5 The outer casing 13 has a stepped portion 131, which is located within the air cavity formed between the panel 14 and the outer casing 13. By mounting the refrigerant detection assembly on the stepped portion 131, the space between the outer casing 13 and the front panel 14 can be fully utilized, avoiding the occupation of other critical components and making the overall layout of the wall-mounted air conditioner indoor unit more compact.

[0122] In this embodiment, the refrigerant detection component is installed on the step portion 131 between the outer cover 13 and the panel 14, which facilitates the installation and maintenance of the refrigerant detection component. When installing, disassembling, or repairing the refrigerant detection component, only the panel 14 needs to be removed for operation, without the need to disassemble too many parts, which is convenient for operators.

[0123] refer to Figure 6 , Figure 11 The mounting base 6 may include a housing 61, and a compartment 611 for mounting the refrigerant detection sensor 5 is formed inside the housing 61.

[0124] The mounting base 6 may include a mounting portion 63, which is connected to the housing 61 and located outside the compartment 611. The mounting portion 63 is provided with a single through hole 64 for a fastener 8 to pass through. The fastener 8 may be a screw or a bolt.

[0125] refer to Figure 7 , Figure 12 The fixing base 6 may include a limiting part 62, which is vertically connected to the mounting part 63. The limiting part 62 and the mounting part 63 together define a positioning structure, which is adapted to the step part 131.

[0126] Further, refer to Figure 8 A fixing hole 133 is provided on the step portion 131, and a fastener 8 is connected to the fixing hole 133 through a through hole 64 so that the refrigerant detection component is fixed on the outer cover 13.

[0127] The fastener 8 passes through the through hole 64 of the mounting part 63 and connects to the fixing hole 133 on the stepped part 131, so that the fixing seat 6 can be firmly fixed to the outer cover 13. The fastener 8 provides a strong mechanical connection force, ensuring that the fixing seat 6 will not loosen or fall off during use.

[0128] In this embodiment, the limiting part 62 and the mounting part 63 are connected to form a positioning structure that matches the step part 131, improving the installation versatility of the fixing seat 6. For different wall-mounted air conditioner casing structures, even if no installation position is reserved, if it is necessary to install or add the refrigerant detection sensor 5 later, it is only necessary to add corresponding fixing holes 133 on the step part 131 of the outer cover 13 to meet the installation or addition requirements, thus solving the technical problem of difficult later installation.

[0129] In addition, the limiting part 62 can also serve as a positioning guide for the fixing hole 133, easily aligning the through hole 64 with the fixing hole 133 on the outer cover 13. This allows production staff to quickly and accurately locate the fixing hole 133, saving time and effort. The single fixing hole 133, in conjunction with the positioning structure, not only effectively prevents the rotational displacement of the fixing seat 6, achieving limiting fixation in all directions, but also allows the refrigerant detection component to be fixed with only one fastener 8, offering the advantages of convenient and quick assembly and disassembly.

[0130] When the operator installs the refrigerant detection component, the positioning structure and the step 131 are matched and positioned to quickly find the position of the fixing hole 133. The operator can hold the refrigerant detection component with one hand and use the other hand to fix the single fastener 8, which saves time, effort and materials.

[0131] In some embodiments of this application, reference is made to Figure 9 The wall-mounted air conditioner indoor unit 100 may include a filter 4, which is disposed on the outer cover 13 and extends circumferentially along the indoor heat exchanger 3. The filter 4 covers the air inlet of the air conditioner and is used to filter impurities in the indoor air.

[0132] refer to Figure 10 The outer cover 13 has a filter removal and installation port 18 on its first side 1312, which connects the receiving space and the air chamber. The filter 4 can be removed and installed through the filter removal and installation port 18.

[0133] refer to Figure 7 The filter screen installation port 18 has a first side wall 1311 that abuts against the end of the filter screen 4. The first side wall 1311 is connected to the first side surface 1312 to form a stepped portion 131.

[0134] In this embodiment, the stepped portion 131 formed by the edge of the filter screen installation port 18 is used as the installation base of the fixing seat 6. There is no need to set up and install other support structures, which reduces the number and complexity of parts, and lowers the production cost and installation difficulty.

[0135] Continue to refer to Figure 10The lower side wall of the filter screen installation / removal port 18 is provided with a snap-fit ​​groove 132, the cross-sectional area of ​​which gradually decreases from top to bottom. The filter screen 4 extends circumferentially along the indoor heat exchanger 3, covering the air conditioning inlet, and the lower end of the filter screen 4 is inserted into the snap-fit ​​groove 132. Thus, the filter screen 4 can be installed onto or removed from the outer cover 13 through the filter screen installation / removal port 18, and the snap-fit ​​groove 132 can snap and fix the end of the filter screen 4 facing the lower side wall of the filter screen installation / removal port 18, so that the position of the filter screen 4 and the outer cover 13 is relatively fixed, preventing the filter screen 4 from shifting position.

[0136] The filter 4 can more effectively cover the air inlet of the air conditioner, so that when the indoor unit of the wall-mounted air conditioner takes in air, the airflow will first pass through the air inlet of the air conditioner and flow to the filter 4. After being filtered by the filter 4, it will flow to the indoor heat exchanger 3 to exchange heat with the indoor heat exchanger 3.

[0137] Filter 4 can filter dust and impurities in the incoming airflow, greatly reducing the amount of dust and impurities entering the housing space. After long-term use, filter 4 can be disassembled, cleaned, or replaced through the filter 4 disassembly port 18 to ensure the smooth air intake of the wall-mounted air conditioner indoor unit and the cleanliness of the housing space.

[0138] It is understandable that when panel 14 is installed on cover 13, it covers filter screen installation port 18 and obstructs filter screen 4.

[0139] In this embodiment, the first sidewall 1311 is the lower sidewall of the filter screen installation / removal port 18. The step 131 formed by the lower sidewall of the filter screen installation / removal port 18 and the first side surface 1312 of the outer cover 13 is relatively close to the potential area for refrigerant leakage. After a refrigerant leaks, it will sink due to its density being greater than air and accumulate in this area. Placing the refrigerant detection component in this location allows for faster and more accurate detection of refrigerant leaks.

[0140] refer to Figure 12 In some embodiments of this application, a reinforcing part 65 is provided on the side of the limiting part 62 away from the step part 131, and the reinforcing part 65 is connected to the mounting part 63.

[0141] By providing the reinforcing part 65, the structural strength of the limiting part 62 can be effectively enhanced, preventing it from deforming or breaking due to stress during installation.

[0142] In some embodiments of this application, reference is made to Figure 13 The length of the limiting part 62 is b. b ≥ 12mm.

[0143] The length dimension b cannot be too small. An excessively small length dimension b will result in insufficient contact and fit between the limiting part 62 and the step part 131, leading to an unstable fixation of the fixing seat 6. To improve the installation stability of the fixing seat 6, the length dimension b is set to be no less than the first parameter value. The first parameter value can be any value between 12mm and 14mm. A suitable specific parameter should be selected during the design process. For example, the first parameter value could be 12mm.

[0144] Continue to refer to Figure 13 The thickness of the limiting part 62 is a. a≥1mm, a≤2mm.

[0145] It should be noted that the thickness direction of the limiting part 62 is perpendicular to the side of the step part 131 that contacts the limiting part 62.

[0146] The thickness dimension 'a' cannot be too small, as an excessively small thickness dimension 'a' will result in lower strength of the limiting part 62, making it prone to breakage. To improve the structural strength of the limiting part 62, the thickness dimension 'a' is set to be no less than the second parameter value. The second parameter value can be any value between 1 mm and 1.2 mm. A suitable specific parameter should be selected during the design process. For example, the first parameter value could be 1 mm.

[0147] The thickness dimension 'a' should not be too large, as an excessively large thickness dimension 'a' will cause the plastic limiting part 62 to shrink easily, affecting its guiding and positioning functions. To avoid shrinkage, the thickness dimension 'a' is set to be no greater than the third parameter value. The third parameter value can be any value between 1.8 mm and 2 mm. A suitable specific parameter should be selected during the design process. For example, the first parameter value can be 2 mm.

[0148] refer to Figure 14 The refrigerant detection sensor 5 includes a body 51, which is housed within a compartment 611. The body 51 has a detection unit 53 for detecting refrigerant leaks.

[0149] The refrigerant detection sensor 5 includes a wiring portion 52, which extends from one end of the body portion 51 along its length. (Reference) Figure 15 The compartment 611 is provided with a clearance notch 6111 for the wiring part 52. The wiring part 52 extends out of the compartment 611 through the clearance notch 6111 so that the wire can be connected to the wiring part 52.

[0150] In this embodiment, the wiring part 52 is located outside the compartment 611, which makes the installation and wiring of the refrigerant detection sensor 5 more intuitive and convenient, facilitates connection with external circuits, simplifies the installation process, and makes the operation more convenient when the refrigerant detection sensor 5 needs to be repaired.

[0151] The wiring section 52, located outside the compartment 611, is susceptible to external environmental influences (such as dust and moisture), which can lead to poor contact or short circuits, and may also pose a risk of electric shock.

[0152] To protect the wiring section 52, in some embodiments of this application, reference is made to... Figure 16 The wiring section 52 is covered with a cover 7, which is detachably connected to the outer casing 61.

[0153] In this embodiment, by providing the cover 7, not only is the wiring part 52 effectively protected, preventing external factors such as dust and moisture from interfering with the wiring part 52 and improving the service life and reliability of the wiring part 52, but it can also prevent users from coming into contact with the live wiring part 52 and reduce the risk of electric shock.

[0154] The removable cover 7 allows maintenance personnel to quickly open the cover 7 for easy inspection or replacement of the wiring section 52.

[0155] refer to Figure 18 The cover 7 has a wire-passing section 75. By providing the wire-passing section 75 on the cover 7, the wiring section 52 can be routed quickly, while ensuring the wiring is neat and aesthetically pleasing.

[0156] In some embodiments of this application, the interior of the cover 7 is defined by a cavity and has an opening on one side, through which the wiring portion 52 is inserted into the cavity.

[0157] refer to Figure 17 , Figure 19 The side wall of the cover 7 is provided with an elastic hook 72. The elastic hook 72 has a locking surface 721 away from the main body 51. The locking surface 721 and the bottom wall 71 of the cover 7 define a locking portion. The bottom wall 71 of the cover 7 is disposed opposite to the opening.

[0158] The outer casing 61 has a surrounding plate 612, which surrounds the outside of the wiring portion 52. The side wall of the surrounding plate 612 away from the main body portion 51 is defined as the second side wall 6121, which is adapted to be snapped into the snap-fit ​​portion.

[0159] By setting the elastic hook 72, the cover 7 can be pressed and pushed forward to complete the fastening with the outer shell 61, which facilitates the assembly of the cover 7. When assembling the cover 7, the surrounding plate 612 is assembled into the cavity through the open opening along the first direction. The surrounding plate 612 deforms by pressing the elastic hook 72 until the second side wall 6121 is clamped in the engaging part.

[0160] The elastic hook 72 of the above structure is a one-way hook. The one-way hook, together with the bottom wall 71, clamps the second side wall 6121, realizing the one-way connection between the cover 7 and the outer shell 61. The user cannot separate the outer shell 61 and the cover 7 without the aid of tools, which enhances the sealing and connection stability of the cover 7 and the outer shell 61, and effectively achieves the effects of preventing disassembly and electric shock.

[0161] In some embodiments of this application, a wire hole 68 is provided on the enclosure 612, and the wire at the wiring part 52 passes through the wire hole 68 and the wire part 75 in sequence, extending to the outside of the cover 7.

[0162] In some embodiments of this application, the elastic hook 72 is provided with a guide surface 722 on the side facing the body portion 51. The guide surface 722 and the first plane form an acute angle with the opening facing the bottom wall 71. The first plane is the plane where the side wall to which the elastic hook 72 is connected is located.

[0163] In this embodiment, by setting the guide surface 722, the cover 7 can be smoothly snapped into the outer shell 61 during the assembly process, thereby improving the assembly efficiency of the refrigerant detection component.

[0164] For details, please refer to Figure 17 The side wall of the cover 7 has a connection port 73 that mates with the elastic hook 72. The elastic hook 72 includes a connecting arm 723, wherein the snap-fit ​​surface 721 is perpendicularly connected to the connecting arm 723.

[0165] The connecting arm 723 is connected to the side wall of the cover 7, and the connecting arm 723 is located inside the connecting port 73, so that the elastic hook 72 can be elastically deformed, which facilitates the installation of the cover 7.

[0166] In some embodiments of this application, a plurality of limiting protrusions 74 are provided on the bottom wall 71 of the cover 7, and the limiting protrusions 74 are adapted to abut against the second side wall 6121. (See reference) Figure 20 The limiting protrusion 74 can be in the form of a semi-circular structure.

[0167] In this embodiment, by setting the limiting protrusion 74, the fixing effect between the cover 7 and the outer shell 61 can be enhanced, further preventing the cover 7 from loosening or shifting during use.

[0168] refer to Figure 19 When the cover 7 is assembled, pressing the outer shell 61 forward causes the surrounding plate 612 to slide into the cavity along the first direction F. The elastic hook 72 contacts the bottom of the second side wall 6121 of the surrounding plate 612. The elastic hook 72 sinks into the connection port 73 under the pressing pressure, providing a smooth channel for the sliding of the surrounding plate 612 and avoiding sliding jamming.

[0169] refer to Figures 20-22When the second sidewall 6121 contacts the limiting protrusion 74 on the bottom wall 71, the upper part of the elastic hook 72 is not subjected to any pressing force. The elastic hook 72 pops out from the connection port 73 and engages with the side of the second sidewall 6121 away from the bottom wall 71 of the cover 7. The engaging surface 721 cooperates with the second sidewall 6121 to prevent the second sidewall 6121 from moving in the second direction. The second sidewall 6121 is engaged in the engaging part, so that the enclosure 612 will not move in the first direction or the allowable direction, so that the enclosure 612 is stably installed in the cover 7.

[0170] It should be noted that the second direction is the opposite of the first direction.

[0171] In some embodiments of this application, reference is made to Figure 11 The side of the outer casing 61 facing the panel 14 is open as a mounting port 67. The refrigerant detection sensor 5 is suitable for being installed into the compartment 611 through the mounting port 67. The side of the outer casing 61 facing the indoor heat exchanger 3 is provided with a detection port 66, which is provided corresponding to the detection part 53 of the refrigerant detection sensor 5.

[0172] In this embodiment, by providing the installation port 67, the refrigerant detection sensor 5 can be directly installed into the compartment 611 from the open side of the outer casing 61, simplifying the installation steps and improving installation efficiency. By providing the detection port 66, airflow passes through the detection port 66 and comes into contact with the detection unit 53, enabling the detection unit 53 to detect leaked refrigerant; at the same time, the detection port 66 is oriented towards the indoor heat exchanger 3, which helps to improve the sensitivity and accuracy of refrigerant leak detection.

[0173] In some other embodiments, the refrigerant detection assembly may include a refrigerant detection sensor 5 for detecting refrigerant leakage from the indoor heat exchanger 3.

[0174] The refrigerant detection assembly may include a housing 61, within which a compartment 611 for mounting a refrigerant detection sensor 5 is formed, and an external mounting portion 63 having a through hole 64 is provided on the exterior of the housing 61.

[0175] The refrigerant detection assembly may include a limiting part 62, which is vertically connected to the mounting part 63. The limiting part 62 and the mounting part 63 define a positioning structure that is adapted to the step part 131.

[0176] The step portion 131 is provided with a fixing hole 133 for fastener 8 to be connected. The fastener 8 is connected to the fixing hole 133 through the through hole 64 so that the refrigerant detection component is fixed on the outer cover 13.

[0177] In this embodiment, the refrigerant detection component is engaged with the step portion 131 through the positioning structure on the outer shell 61. Only one fastener 8 is needed to fix it to the outer cover 13, which simplifies the installation steps, improves the installation efficiency, and has the advantages of convenient disassembly and assembly and material saving. The engagement between the positioning structure and the step portion 131 not only serves as a positioning guide for the fixing hole 133, making it easy to find the fixing hole 133 during installation, but also, together with the single fastener 8, effectively restricts the movement of the refrigerant detection component, prevents loosening caused by vibration or external force, and enhances the installation stability.

[0178] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0179] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that, include: Housing, the housing comprising: An outer cover defines an inner space. The top and bottom of the outer cover are respectively provided with an air conditioning inlet and an air conditioning outlet that communicate with the inner space. The outer cover has a stepped portion. A panel is disposed on one side of the outer cover and defines an air cavity with the outer cover. The air cavity is connected to the receiving space, and the stepped portion is located inside the air cavity. An indoor heat exchanger is disposed in the aforementioned accommodating space; An indoor fan is installed in the aforementioned accommodating space; A refrigerant detection assembly for detecting refrigerant leaks in an indoor heat exchanger, the refrigerant detection assembly comprising: Refrigerant detection sensor; The fixing base includes: The outer casing has a compartment formed therein for mounting the refrigerant detection sensor; The mounting part is connected to the outer shell and located outside the compartment, and the mounting part is provided with a single through hole for fasteners to pass through; A limiting part is vertically connected to the mounting part and defines a positioning structure with the mounting part, the positioning structure being adapted to the step part; A fixing hole is provided on the stepped portion, and the fastener passes through the through hole and is connected to the fixing hole so that the refrigerant detection component is fixed on the outer cover.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The first side of the outer cover has a filter screen installation and removal port that connects the receiving space and the air cavity. The filter screen installation and removal port is used to install and remove the filter screen. The filter screen installation and removal port has a first side wall that abuts against the end of the filter screen. The first side wall and the first side are connected to form the step portion.

3. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, A reinforcing part is provided on the side of the limiting part away from the step part, and the reinforcing part is connected to the mounting part.

4. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The refrigerant detection sensor includes a body and a wiring portion. The wiring portion extends from one end of the body in its length direction. The body is housed in the compartment. The compartment has a clearance notch corresponding to the wiring portion, and the wiring portion extends out of the compartment through the clearance notch.

5. The wall-mounted air conditioner indoor unit according to claim 4, characterized in that, The wiring section is covered by a housing cover, which is detachably connected to the outer casing. The housing cover has a wire-passing section.

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The outer casing has a surrounding plate that surrounds the outside of the wiring portion, and the side wall of the surrounding plate that is away from the main body portion is defined as the second side wall; The shell cover has an internal cavity and an open opening on one side. An elastic hook protrudes from the side wall of the shell cover. The elastic hook has a snap-fit ​​surface away from the main body. A snap-fit ​​portion that is adapted to connect with the second side wall is defined between the snap-fit ​​surface and the bottom wall of the shell cover. The enclosure is assembled into the cavity along the first direction through the opening, and the enclosure presses the elastic hook until the second side wall is clamped in the snap-fit ​​portion.

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The bottom wall of the shell cover is provided with a plurality of limiting protrusions, which are adapted to abut against the second side wall.

8. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The elastic hook has a guide surface on the side facing the main body, and the guide surface and the first plane form an acute angle with the opening facing the bottom wall. The first plane is the plane where the side wall to which the elastic hook is connected is located.

9. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The outer casing has an opening on the side facing the panel as an installation port. The refrigerant detection sensor is adapted to be installed into the compartment through the installation port. The outer casing has a detection port on the side facing the indoor heat exchanger, and the detection port is set corresponding to the detection part of the refrigerant detection sensor.

10. A wall-mounted air conditioner indoor unit, characterized in that, include: Housing, the housing comprising: An outer cover defines an inner space. The top and bottom of the outer cover are respectively provided with an air conditioning inlet and an air conditioning outlet that communicate with the inner space. The outer cover has a stepped portion. A panel is disposed on one side of the outer cover and defines an air cavity with the outer cover. The air cavity is connected to the receiving space, and the stepped portion is located inside the air cavity. An indoor heat exchanger is disposed in the aforementioned accommodating space; An indoor fan is installed in the aforementioned accommodating space; A refrigerant detection assembly for detecting refrigerant leaks in an indoor heat exchanger, the refrigerant detection assembly comprising: Refrigerant detection sensor; The housing has an internal compartment for mounting the refrigerant detection sensor, and the exterior of the housing has a mounting portion with through holes. A limiting part is vertically connected to the mounting part, and the limiting part and the mounting part define a positioning structure that is adapted to the stepped part; The stepped portion is provided with a fixing hole for fastener connection. The fastener passes through the through hole and is connected to the fixing hole so that the refrigerant detection component is fixed to the outer cover.

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