Duct type air conditioner

Abstract

The utility model provides a duct type air conditioner. The duct type air conditioner has a vertical installation posture and a horizontal installation posture. The duct type air conditioner comprises a machine shell, a fan cavity and a heat exchange cavity are formed in the machine shell in the length direction, and an air inlet communicating with the heat exchange cavity and an air outlet communicating with the fan cavity are formed in the two ends of the machine shell in the length direction correspondingly; the heat exchange assembly is arranged in the heat exchange cavity; the fan is arranged in the fan cavity; the refrigerant detection device comprises a fixed seat which is installed on the heat exchange assembly, and the two opposite sides of the fixed seat are provided with an insertion part and a fixed part respectively; mounting parts are arranged on the two opposite sides of the refrigerant leakage sensor respectively, one of the two mounting parts is matched with the inserting part in an inserting mode, and the other mounting part is detachably connected with the fixing part. According to the utility model, the space is effectively utilized due to the arrangement of the insertion part, the space occupation and inconvenience possibly caused by the traditional screw installation mode are avoided, the heat exchanger is particularly suitable for the heat exchange assembly environment with more pipelines and narrow space, and the after-sales flow is simplified.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, and in particular relates to a duct air conditioner. Background Art

[0002] Existing vertical ducted air conditioning units are available in both vertical and horizontal installation configurations to meet different installation needs. The unit mainly consists of a casing with an air inlet and an air outlet at both ends along its length. It also includes a heat exchange assembly and a fan housed within the casing. The heat exchange assembly is positioned near the air inlet to exchange heat with the incoming air; the fan is positioned near the air outlet to draw air from the inlet into the casing, where it is then exchanged heat by the heat exchange assembly and expelled through the outlet.

[0003] Due to issues with sealing, heat exchange components may experience refrigerant leaks. These leaks reduce heat exchange efficiency and can easily lead to safety hazards. Therefore, refrigerant sensors must be installed to monitor for leaks and provide early warnings when flammable refrigerant leaks are detected, thus preventing potential safety risks.

[0004] In existing technologies, refrigerant leak sensors are mostly mounted on heat exchange components using mounting brackets. The assembly process between the brackets and the refrigerant leak sensor is cumbersome and inefficient. Furthermore, the limited space and numerous pipes on the heat exchange components make subsequent maintenance and replacement of the refrigerant leak sensor difficult, increasing the complexity of equipment maintenance. 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 duct air conditioner is provided, which has a vertical installation posture and a horizontal installation posture, the duct air conditioner comprising:

[0007] The casing has a fan chamber and a heat exchange chamber formed along its length. At both ends of the casing along its length, there are air inlets communicating with the heat exchange chamber and air outlets communicating with the fan chamber.

[0008] A heat exchange assembly is disposed within the heat exchange cavity to exchange heat with the indoor air of the casing;

[0009] A fan is installed inside the fan cavity to draw indoor air into the casing from the air inlet, and after heat exchange by the heat exchange components, it is sent out from the air outlet.

[0010] A refrigerant detection device is used to detect refrigerant leakage from the heat exchange assembly. The refrigerant detection device includes:

[0011] The fixing base includes:

[0012] A substrate is mounted on the heat exchange assembly;

[0013] A connector is attached to one side of the substrate;

[0014] A fixing part is connected to the opposite side of the substrate;

[0015] The refrigerant leak sensor has mounting parts on opposite sides. One of the two mounting parts is adapted to be inserted into the plug-in part, and the other of the two mounting parts is detachably connected to the fixing part.

[0016] The above technical solution has the following advantages or beneficial effects: By setting a mounting base, the mounting part of one end of the refrigerant leak sensor can be inserted into the plug-in part during installation, while the mounting part of the other end can be fixedly connected to the mounting part using other detachable connection methods. This not only significantly reduces the complexity of the installation and disassembly process but also ensures the secure installation of the refrigerant leak sensor. At the same time, the plug-in part effectively utilizes space, avoiding the space occupation and inconvenience that may result from traditional screw installation methods. It is particularly suitable for heat exchanger component environments with many pipelines and limited space, simplifying after-sales procedures.

[0017] In some embodiments, the insertion portion includes a first side plate and an insertion groove. The first side plate is vertically connected to the substrate, and the insertion groove is disposed through the first side plate along the thickness direction of the first side plate. The insertion groove is inserted into and engaged with one of the mounting portions.

[0018] The above technical solution has the following advantages or beneficial effects: the cooperation between the plug slot in the plug part and the mounting part simplifies the installation and disassembly process of the refrigerant leak sensor and reduces the number of parts. After the mounting part is inserted into the plug slot, the first side plate can limit the mounting part to ensure the installation is firm.

[0019] In some embodiments, the mounting portion has a through hole, the fixing portion includes a second side plate and a connecting hole, the second side plate is connected to the substrate, the connecting hole is disposed on the second side plate, and a fastener passes through the through hole and is connected in the connecting hole, so that the refrigerant leakage sensor is fixed on the fixing base.

[0020] The above technical solution has the following advantages or beneficial effects: by passing through the through hole of the mounting part with fasteners and connecting to the connection hole on the second side plate, this structure allows the refrigerant leak sensor to be firmly fixed on the mounting base. The fasteners provide strong mechanical connection force, ensuring that the refrigerant leak sensor does not loosen or fall off during use.

[0021] In some embodiments, the heat exchange assembly includes two straight heat exchangers arranged at an angle to each other, a support plate connecting the two straight heat exchangers, and an airflow space formed between the support plate and the two straight heat exchangers. The mounting base is installed on the side of the support plate facing the housing.

[0022] The above technical solution has the following advantages or beneficial effects: by installing the fixing seat on the side of the support plate facing the housing, it is convenient for after-sales maintenance of the refrigerant leakage sensor; during assembly, the fixing seat can be pre-installed on the support plate, eliminating the need for rear-end installation and improving assembly efficiency.

[0023] In some embodiments, the mounting base is screwed onto the support plate.

[0024] The above technical solution has the following advantages or beneficial effects: fixing the mounting base to the support plate by screwing not only improves the installation efficiency of the mounting base, but also ensures the connection strength between the two, ensuring that the mounting base is not easy to loosen.

[0025] In some embodiments, the connecting hole is a flanged hole, and the support plate is provided with a through hole corresponding to the flanged hole, with the flanged hole passing through the through hole.

[0026] The above technical solution has the following advantages or beneficial effects: by setting the flange hole, the connection stability between the refrigerant leakage sensor and the mounting base is increased.

[0027] In some embodiments, the heat exchange assembly further includes a water receiving tray located at the bottom of the heat exchange chamber for collecting condensate from the two straight-section heat exchangers; the water receiving tray has a drain outlet, and the distance between the projection of the drain outlet on the plane of the support plate and the refrigerant leak sensor is M, where M≤145mm and M≥120mm.

[0028] The above technical solution has the following advantages or beneficial effects: by setting the distance between the projection of the drain outlet on the plane of the support plate and the refrigerant leakage sensor within a reasonable range, the duct unit is always close to the bottom of the heat exchange chamber regardless of its installation posture, ensuring that the refrigerant leakage sensor can accurately detect refrigerant leakage.

[0029] In some embodiments, in the vertical installation posture and the horizontal installation posture, the distances between the refrigerant leak sensor and the bottom end of the heat exchange cavity in the direction of gravity are H1 and H2, respectively; in the vertical installation posture and the horizontal installation posture, the heights of the heat exchange cavity are L and D, respectively, where H1≤0.19L and H2≤0.36D.

[0030] The above technical solution has the following advantages or beneficial effects: by reasonably setting the maximum vertical distance between the refrigerant leak sensor and the bottom of the heat exchange chamber, the refrigerant leak sensor can effectively, timely and accurately detect refrigerant leaks and deposits.

[0031] In some embodiments, H1 ≥ 0.12L, H2 ≥ 0.25D.

[0032] The above technical solution has the following advantages or beneficial effects: by reasonably setting the minimum vertical distance between the refrigerant leak sensor and the bottom of the heat exchange chamber, it can effectively avoid adverse consequences such as condensate water in the water collection pan splashing or soaking the refrigerant detection sensor, and ensure that the operation of the refrigerant leak sensor is not affected by the condensate water generated by the operation of the heat exchange components.

[0033] In some embodiments, the mounting portion includes a connecting section and a guide section, the guide section being connected to the end of the connecting section away from the refrigerant leak sensor, and the guide section being tapered in the direction from the connecting section away from the refrigerant leak sensor.

[0034] The above technical solution has the following advantages or beneficial effects: by setting the guide part, it can play an installation guiding role and facilitate the connection with the plug slot.

[0035] Another aspect of this application provides a duct unit, which has a vertical installation posture and a horizontal installation posture, the duct unit comprising:

[0036] The casing has a fan chamber and a heat exchange chamber formed along its length. At both ends of the casing along its length, there are air inlets communicating with the heat exchange chamber and air outlets communicating with the fan chamber.

[0037] A heat exchange assembly is disposed within the heat exchange cavity to exchange heat with the indoor air of the casing;

[0038] A fan is installed inside the fan cavity to draw indoor air into the casing from the air inlet, and after heat exchange by the heat exchange components, it is sent out from the air outlet.

[0039] A refrigerant detection device is used to detect refrigerant leakage from the heat exchange assembly. The refrigerant detection device includes:

[0040] A mounting base is pre-installed on the heat exchange assembly, and the mounting base has a plug-in part and a fixing part on opposite sides respectively;

[0041] A refrigerant leak sensor has mounting parts on opposite sides.

[0042] When the refrigerant leak sensor is installed, one of the two mounting parts is inserted into the plug-in part and connected to the plug-in part, and the other of the two mounting parts is screwed to the fixing part, so that the refrigerant leak sensor can be detachably connected to the fixing base.

[0043] The above technical solution has the following advantages or beneficial effects: By setting a mounting base, the mounting part of one end of the refrigerant leak sensor can be inserted into the plug-in part during installation, while the mounting part of the other end can be detachably and fixedly connected to the fixing part using other detachable connection methods. This not only significantly reduces the complexity of the installation and disassembly process but also ensures the secure installation of the refrigerant leak sensor. At the same time, the plug-in part effectively utilizes space, avoiding the space occupation and inconvenience that may result from traditional screw installation methods. It is particularly suitable for heat exchange component environments with many pipelines and limited space, simplifying after-sales procedures. Attached Figure Description

[0044] 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.

[0045] Figure 1 This is a front view of the ductwork unit according to an embodiment of this disclosure;

[0046] Figure 2 , 3 This is a three-dimensional structural view of the ductwork unit according to the embodiments of this disclosure;

[0047] Figure 4 This is a structural diagram of a ducted air conditioner with the front panel omitted according to an embodiment of this disclosure;

[0048] Figure 5 This is a schematic diagram of the refrigerant detection device installed on the heat exchange assembly according to an embodiment of the present disclosure;

[0049] Figure 6 This is a perspective view of the refrigerant detection device according to an embodiment of the present disclosure;

[0050] Figure 7 This is a schematic diagram of the refrigerant detection device according to an embodiment of the present disclosure;

[0051] Figure 8 This is a structural schematic diagram of the fixing base according to an embodiment of the present disclosure;

[0052] Figure 9This is a structural schematic diagram of the fixing seat from another perspective according to the embodiments of this disclosure;

[0053] Figure 10 This is a schematic diagram of the structure of a refrigerant leak sensor according to an embodiment of this disclosure. Figure 1 ;

[0054] Figure 11 This is a partial schematic diagram of the refrigerant detection device mounted on a support plate according to an embodiment of this disclosure;

[0055] Figure 12 This is a partial schematic diagram of the refrigerant detection device mounted on a support plate from another perspective according to an embodiment of the present disclosure;

[0056] Figure 13 This is a schematic diagram of the structure of the vertical installation of the air outlet on the duct air conditioner according to the embodiments of this disclosure;

[0057] Figure 14 This is a perspective view of the structure of a vertically installed ducted air conditioner with bottom air outlet according to an embodiment of this disclosure;

[0058] Figure 15 This is a perspective view of the structure of a horizontally installed ducted air conditioner with right-side air outlet according to an embodiment of this disclosure;

[0059] Figure 16 This is a perspective view of the structure of a horizontally installed ducted air conditioner with left-side air outlet according to an embodiment of this disclosure;

[0060] Figure 17 This is a schematic diagram showing the positions of the refrigerant leak sensor and the drain outlet according to an embodiment of this disclosure.

[0061] Figure 18 This is a structural schematic diagram of the duct machine in a horizontal installation position according to the embodiments of this disclosure;

[0062] Figure 19 This is a structural schematic diagram of the duct machine in a vertical installation posture according to the embodiments of this disclosure;

[0063] Figure 20 This is a schematic diagram of the structure of a refrigerant leak sensor according to an embodiment of this disclosure. Figure 2 .

[0064] In the above figures: ducted air conditioner 100; housing 1; air inlet 11; air outlet 12; front panel 13; upper panel 131; lower panel 132; top plate 14; rear shell 15; rear panel 151; side plate 152; heat exchange chamber 161; fan chamber 162; heat exchange assembly 2; straight section heat exchanger 21; first water tray 22; second water tray 23; drain outlet 24; support plate 25; through hole 251; fan 3; base plate 4; through hole 41; refrigerant leak sensor 5; plug-in part 6; first side plate 61; plug-in groove 62; fixing part 7; second side plate 71; connecting hole 72; mounting part 8; through hole 81; fastener 9. DETAILED DESCRIPTION

[0065] To make the objectives and implementation methods of this application clearer, the exemplary embodiments of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0066] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0067] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0068] The terms “include” and “have”, and any variations thereof, are intended to cover but not exclude inclusion. For example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0069] 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.

[0070] In this application, the central air conditioning duct indoor unit (hereinafter referred to as duct unit) belongs to the category of air conditioners. An air conditioner includes a duct unit (i.e., an indoor unit) and an outdoor unit (i.e., an outdoor unit). An air conditioner performs a refrigeration cycle by using a compressor, condenser, throttling device, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0071] The compressor compresses the refrigerant gas at low temperature and low pressure, discharging it at high temperature and high pressure. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0072] The throttling device expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the throttling device, returning the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0073] An air conditioner includes an indoor unit and an outdoor unit. The outdoor unit refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit includes the indoor heat exchanger, and a throttling device can be provided in either the indoor or outdoor unit.

[0074] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0075] This utility model proposes a duct air conditioner 100, as described below (refer to...). Figures 1-20 Describe the ducted air conditioner 100. Figure 1 This is a front view of the duct air conditioner 100 provided according to an embodiment of the present utility model.

[0076] refer to Figures 1-3 The ducted air conditioner 100 may include a housing 1. The housing 1 forms the exterior of the ducted air conditioner 100, and the interior of the housing 1 defines a receiving space for accommodating various components of the ducted air conditioner 100.

[0077] The interior of the casing 1 is defined by a fan chamber 162 and a heat exchange chamber 161 that are interconnected along the length of the casing 1.

[0078] The casing 1 has an air inlet 11. The air inlet 11 is connected to the heat exchange chamber 161 and serves as the inlet for indoor air from outside the casing 1 to flow in.

[0079] The casing 1 has an air outlet 12. The air outlet 12 is connected to the fan cavity 162 and serves as the outlet for the heat exchanged air to flow out after heat exchange inside the casing 1.

[0080] Indoor air outside the casing 1 enters the casing 1 through the air inlet 11 and is finally discharged into the room through the air outlet 12.

[0081] The air inlet 11 can be located at one end of the length direction of the housing 1, and the air outlet 12 can be located at the other end of the length direction of the housing 1.

[0082] refer to Figure 2 , Figure 3 The housing 1 is roughly rectangular in shape, with the air inlet 11 and the air outlet 12 located at the bottom and top of the housing 1, respectively.

[0083] In some embodiments of this application, the housing 1 may include a rear cover 15. The rear cover 15 is generally a U-shaped structure with an opening at the front end.

[0084] In some embodiments of this application, the housing 1 may include a front panel 13 located on the front side of the housing 1. The front panel 13 is connected to the opening end of the rear housing 15, closing the front opening end of the rear housing 15.

[0085] In some embodiments of this application, the housing 1 may include a top plate 14. An air outlet 12 may be provided on the top plate 14.

[0086] In some embodiments, the housing 1 may include a base plate, which is disposed opposite to the top plate 14 in the longitudinal direction of the housing. The air inlet is disposed on the base plate.

[0087] In some other embodiments, the lower opening of the rear cover 15 and the front panel 13 can directly define an air inlet 11.

[0088] In some embodiments of this application, the top plate 14 may be connected to the upper end of the rear shell 15, partially covering the upper end of the rear shell 15. The uncovered portion of the upper end of the rear shell 15 may form an opening, and the surrounding edges 411 that form the opening may be turned upward to form an air outlet 12, defining the air supply range.

[0089] In this embodiment, the air outlet 12 is formed by bending and flanging the rear shell 15 and the top plate 14, which maximizes the air outlet 12, expands the air delivery range, and eliminates the need for a separate air outlet 12 component, further reducing the number of parts, lowering production costs, and improving assembly efficiency.

[0090] Continue to refer to Figure 2 The front panel 13 may include the top panel 131.

[0091] The front panel 13 may include a lower panel 132. The lower panel 132 is located below the upper panel 131, and the lower panel 132 and the upper panel 131 may be connected separately.

[0092] By disassembling or assembling the upper panel 131 or the lower panel 132, it is convenient to perform maintenance and repair operations on the various components inside the housing 1.

[0093] In some embodiments of this application, the rear shell 15 can be a separate connection or an integral piece.

[0094] The rear cover 15 may include a rear panel 151. The rear panel 151 is disposed opposite to the front panel 13.

[0095] The rear cover 15 may include two side panels 152. The side panels 152 are connected between the front panel 13 and the rear panel 151, and the two side panels 152 are respectively connected to the two sides of the front panel 13, forming the left and right sides of the housing 1. The two side panels are the left side panel and the right side panel.

[0096] It should be noted that the directions described in the text are based on the direction in which the user faces the duct unit 100. Specifically, the side of the duct unit 100 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 in which the user faces the duct unit 100. The upper and lower sides are defined by the direction in which the duct unit 100 is normally in operation.

[0097] refer to Figure 4 The ducted air conditioner 100 may include a heat exchange assembly 2. The heat exchange assembly 2 is disposed in the heat exchange chamber 161 and is used to exchange heat with the indoor air entering the heat exchange chamber 161 of the housing 1.

[0098] The ducted air conditioner 100 may include a fan 3. The fan 3 is disposed in the fan cavity 162 and is used to drive indoor air outside the housing 1 into the housing 1, and to make the air inside the housing 1 flow along the air inlet 11 toward the air outlet 12.

[0099] During the operation of the ducted air conditioner, refrigerant leakage may occur in the heat exchange component 2. Therefore, in order to detect the refrigerant leakage from the heat exchange component 2, in this embodiment, the ducted air conditioner 100 may include a refrigerant detection device. The refrigerant detection device is installed on the heat exchange component 2.

[0100] In some embodiments of this application, the refrigerant detection device may include a refrigerant leak sensor 5 for detecting refrigerant leaks from the heat exchange assembly 2.

[0101] The refrigerant detection device may include a mounting base, which is mounted on the heat exchange assembly 2 to provide a mounting position for the refrigerant leak sensor 5.

[0102] refer to Figures 6-12 The mounting base may include a substrate 4. The substrate 4 is mounted on the heat exchange assembly, and mounting positions are formed on the substrate 4.

[0103] The mounting base may include a plug-in portion 6, which is connected to one side of the substrate 4.

[0104] The mounting base may include a mounting part 7, which is connected to the opposite side of the substrate 4. (See reference) Figure 8 In this embodiment, the insertion part 6 and the fixing part 7 are disposed on the left and right sides of the substrate 4 respectively.

[0105] The refrigerant leak sensor 5 has mounting parts 8 on opposite sides. One of the two mounting parts 8 is adapted to be inserted into the plug-in part 6, and the other of the two mounting parts 8 is detachably and fixedly connected to the fixing part 7 so that the refrigerant leak sensor 5 is connected to the mounting position.

[0106] In this embodiment, by setting a fixing base, the mounting part of one end of the refrigerant leak sensor can be inserted into the plug-in part during installation, while the mounting part of the other end can be fixedly connected to the fixing part using other detachable connection methods. This not only significantly reduces the complexity of the installation and disassembly process, but also ensures the secure installation of the refrigerant leak sensor.

[0107] Meanwhile, the design of the plug-in part 6 effectively utilizes space, avoiding the space occupation and inconvenience that may be caused by the traditional screw installation method. It is particularly suitable for heat exchange component 2 environments with many pipelines and limited space, simplifying the after-sales process.

[0108] In some embodiments of this application, the mounting base is pre-installed on the heat exchange assembly, and the mounting base has a plug-in portion and a fixing portion on opposite sides. When the refrigerant leak sensor 4 is installed, one of the two mounting portions 8 of the refrigerant leak sensor 5 can be inserted into the plug-in portion 6 and connected to the plug-in portion 6, and the other mounting portion 8 of the two mounting portions 8 is screwed to the fixing portion 7, so that the refrigerant leak sensor 5 is detachably and fixedly connected to the mounting base.

[0109] In this embodiment, by setting a fixing base and providing a plug-in part 6 and a fixing part 7 on opposite sides, the mounting part 8 at one end of the refrigerant leak sensor 5 can be inserted into the plug-in part 6 when it is installed, and the mounting part 8 at the other end is screwed to the fixing part 7. This not only improves the installation efficiency of the refrigerant leak sensor 5, but also ensures the connection strength between the refrigerant leak sensor 5 and the fixing base, ensuring that the refrigerant leak sensor 5 is not easy to loosen.

[0110] In some embodiments of this application, reference is made to Figure 8 The insertion part 6 may include a first side plate 61, which is vertically connected to the substrate 4.

[0111] The insertion part 6 may include an insertion groove 62, which is disposed through the first side plate 61 along the thickness direction. The insertion groove 62 is inserted into a mounting part 8.

[0112] In this embodiment, the insertion slot 62 in the insertion part 6 and the insertion engagement of the mounting part 8 simplify the installation and disassembly process of the refrigerant leak sensor 5 and reduce the number of parts. After the mounting part 8 is inserted into the insertion slot 62, the first side plate 61 can limit the mounting part 8 to ensure the installation is secure.

[0113] refer to Figure 8 , Figure 9 The insertion slot 62 can be rectangular. Compared with a circular insertion slot 62, a rectangular insertion slot 62 will not rotate in the circumferential direction after the mounting part 8 is inserted into the insertion slot 62. This eliminates the need for a separate anti-rotation structure, making it simple, convenient, and easy to manufacture. At the same time, it can ensure that the mounting part 8 at the other end of the refrigerant leak sensor 5 can be smoothly assembled with the fixing part 7.

[0114] In some embodiments of this application, reference continues to be made to Figure 8 The fixing part 7 may include a second side plate 71, which is connected to the substrate 4. The second side plate 71 may be arranged parallel to the substrate 4.

[0115] The fixing part 7 may include a connecting hole 72, which is provided through the second side plate 71 along the thickness direction. The connecting hole 72 may be a flanged threaded hole.

[0116] In this embodiment, the second side plate 71 may be formed by a substrate 4 extending along its plane.

[0117] refer to Figures 10-12 The mounting part 8 has a through hole 81 through which a fastener 9 passes. When the refrigerant leak sensor 5 is installed, the fastener 9 passes through the through hole 81 and is connected to the connection hole 72 so that the refrigerant leak sensor 5 is fixed on the mounting base.

[0118] The mounting part 8 may include a connecting ear, which is connected to the refrigerant leak sensor 5 and serves as the main body of the mounting part 8.

[0119] The mounting part 8 may include a through hole 81, which is disposed through the connecting lug. The extending direction of the through hole 81 may be perpendicular to the second side plate 71.

[0120] In this embodiment, the refrigerant leak sensor 5 is securely fixed to the mounting base by means of a fastener 9 passing through the through hole 81 of the mounting part 8 and connecting to the connection hole 72 on the second side plate 71. The fastener 9 provides a strong mechanical connection force, ensuring that the refrigerant leak sensor 5 does not loosen or fall off during use.

[0121] Among them, fastener 9 can be a screw or a bolt.

[0122] By setting the fixing part 7 and the insertion part 6 of the above structure, when installing the refrigerant leak sensor 5, the mounting part 8 at one end is inserted into the insertion slot 62, and the through hole 81 on the opposite mounting part 8 is aligned with the connecting hole 72 on the fixing part 7, and then fixed by a fastener 9. This allows the refrigerant leak sensor 5 to be fixed with only one fastener 9 (screw or bolt), which has the advantages of convenient and quick assembly and disassembly.

[0123] It is understandable that the refrigerant leak sensor 5 can be placed in any orientation. The insertion part 6 and the fixing part 7 can be in any position, as long as they are located at opposite ends. That is, the insertion part 6 can be located on the left, right, top, or bottom of the substrate 4, and the fixing part 7 can be correspondingly located on the right, left, bottom, or top of the substrate 4.

[0124] In some embodiments of this application, the heat exchange assembly 2 may include a heat exchanger located within the heat exchange chamber 161 and near the air inlet 11.

[0125] Continue reading Figure 5 The heat exchanger includes two straight-section heat exchangers 21 arranged at an angle to each other. The two straight-section heat exchangers 21 are inclined relative to the direction of gravity, and the distance between them gradually increases along the direction of gravity. This design, combining the inclined arrangement of the straight-section heat exchangers 21 with the gradually increasing distance, facilitates more uniform and efficient heat exchange as the airflow passes through them. This design allows the airflow to make more thorough contact with the surface of the straight-section heat exchangers 21 during its flow, thereby improving heat transfer efficiency and accelerating the heating or cooling of indoor air.

[0126] refer to Figure 5 Two straight-section heat exchangers 21 are connected at one end to form a connecting end, and the other ends of the two straight-section heat exchangers 21 are far apart to form free ends, so that the heat exchanger formed is V-shaped. The V-shaped heat exchanger almost covers the entire airflow cross section in the airflow direction between the air inlet 11 and the air outlet 12, thereby increasing the heat exchange area of ​​the heat exchanger, improving the heat exchange efficiency of the duct air conditioner 100, and increasing the amount of air exchanged.

[0127] In some embodiments, a support plate 25 is connected between the two straight-section heat exchangers 21. The support plate 25 and the two straight-section heat exchangers 21 enclose an airflow space. The support plate 25 ensures that the front and rear sides of the heat exchangers are airtight, allowing air to completely pass over the heat exchanger fins.

[0128] The support plate 25 can be connected to the end plate of the straight section heat exchanger 21 by screws or bolts.

[0129] The mounting bracket is installed on the side of the support plate 25 facing the housing. Installing the bracket on the side of the support plate 25 facing the housing facilitates after-sales maintenance of the refrigerant leak sensor 5. Furthermore, the bracket can be pre-installed on the support plate 25, eliminating the need for rear-end installation and improving assembly efficiency. In other words, the bracket can be pre-installed on the support plate 25 during the assembly of the heat exchange assembly 2, avoiding interference from various piping routes after the heat exchange assembly 2 is assembled.

[0130] To facilitate the maintenance of the refrigerant leak sensor 5, in this embodiment, the mounting base is installed on the support plate 25 near the front panel of the housing. If the refrigerant leak sensor 5 malfunctions, it can be repaired by removing the front panel, improving after-sales convenience.

[0131] In some embodiments, the mounting base is screwed onto the support plate 25.

[0132] refer to Figure 12 In this embodiment, the support plate 25 is provided with a screw hole 252, and the base plate 4 of the fixing seat is provided with a through hole 41 corresponding to the screw hole 252. Screws or bolts pass through the through hole 41 and are threaded into the screw hole 252.

[0133] For example, the screw hole 252 on the support plate 25 can be set as a flanged hole, which helps to improve the connection strength between the fixing seat and the support plate.

[0134] In this embodiment, the fixing base is fixed to the support plate 25 by screwing, which not only improves the installation efficiency of the fixing base, but also ensures the connection strength between the two, ensuring that the fixing base is not easy to loosen.

[0135] In addition, to improve the installation stability of the mounting bracket, the through hole 41 can also be provided on the second side plate 71.

[0136] Of course, in some other embodiments, the mounting base can also be fixed to the evaporator support plate 25 by welding or riveting.

[0137] In some embodiments, the connecting hole 72 is a flanged hole. (Continue to refer to...) Figure 12 The support plate 25 is provided with a through hole 251 corresponding to the flange hole, and the flange hole passes through the through hole 251.

[0138] In this embodiment, by setting the connection hole 72 as a flanged hole, the connection stability between the refrigerant leak sensor 5 and the mounting base is increased.

[0139] In some embodiments of this application, the heat exchange assembly 2 may include a water receiving tray located at the bottom of the heat exchange chamber 161 to collect condensate from the two straight-section heat exchangers 21 during operation of the ducted air conditioner.

[0140] refer to Figure 5 The drip tray has a drain outlet 24, which is used to drain the condensate collected in the drip tray to the outside of the duct unit.

[0141] Specifically, reference Figure 5 The drip tray may include a first drip tray 22, which is connected to the open end of the "V"-shaped heat exchanger. The first drip tray 22 can not only collect the condensate flowing down from the heat exchanger, but also support the heat exchanger.

[0142] The water receiving tray may include a second water receiving tray 23. The second water receiving tray 2382 is connected to one side of the heat exchanger, and one end of the second water receiving tray 2382 is connected to the first water receiving tray 2281. By setting the first water receiving tray 2281 and the second water receiving tray 2382, the waterproof performance of the duct air conditioner can be guaranteed, allowing the duct air conditioner 100 to meet different installation methods and expanding the application range of the duct air conditioner.

[0143] Specifically, the ducted air conditioner has both vertical and horizontal installation options, allowing the ducted air conditioner 100 to be installed in four directions, including vertical installations with top and bottom airflow (e.g., vertical installations with airflow from top to bottom). Figure 13 , Figure 14 As shown), horizontal type with left and right air outlets (such as...) Figure 15 , Figure 16 (As shown). When the duct unit 100 is in a vertical position, the first water receiving tray 2281 is located at the bottom of the heat exchange chamber to collect and contain the condensate flowing down from the heat exchanger; when the duct unit 100 is in a horizontal position, the second water receiving tray 2382 is located at the bottom of the heat exchange chamber 161 to collect and contain the condensate flowing down from the heat exchanger.

[0144] refer to Figures 13-16 The refrigerant leak sensor 5 is located near the drain outlet 24.

[0145] Understandably, the drain outlet 24 is typically located at or near the bottom of the ducted air conditioner. Refrigerant leaks tend to accumulate in this area first, making it the first location to reach the alarm concentration. Placing the refrigerant leak sensor 5 close to the drain outlet 24 effectively detects leaking refrigerant gas and issues an alarm promptly, ensuring the accuracy and timeliness of the sensor's monitoring and effectively avoiding the risk of undetected leaks due to excessive installation height.

[0146] In addition, placing the refrigerant leak sensor 5 near the drain outlet 24 facilitates design, installation, and subsequent maintenance.

[0147] In some embodiments, reference Figure 17 The distance between the projection of the drain outlet 24 onto the plane of the support plate 25 and the refrigerant leak sensor 5 is M. Where M≤145mm, M≥120mm.

[0148] The distance M between the refrigerant leak sensor 5 and the drain outlet 24 should not be too large. If it is too large, the refrigerant leak sensor 5 will be too far from the bottom of the heat exchange chamber 161, affecting the detection accuracy and timeliness of the leaking refrigerant. To improve the detection accuracy of the refrigerant leak sensor 5, the distance M is set to be no greater than a first parameter value. For example, the first parameter value can be 140mm to 145mm. A suitable and specific parameter should be selected during the specific design process.

[0149] In this embodiment, by setting the distance M between the refrigerant leak sensor 5 and the drain outlet 24 to less than 145mm, the duct unit is always close to the bottom of the heat exchange chamber 161 regardless of its installation posture, ensuring that the refrigerant leak sensor 5 can accurately detect refrigerant leaks.

[0150] In addition, the installation location of the refrigerant leak sensor does not need to be changed under different installation methods, ensuring consistency in design and production, and convenience of after-sales installation.

[0151] The distance M between the refrigerant leak sensor 5 and the drain outlet 24 should not be too small. If it is too small, the refrigerant leak sensor will be too close to the drain outlet 24, making it very easy for condensate to drip or overflow onto the refrigerant leak sensor 5. To ensure that the refrigerant leak sensor 5 is not affected by condensate generated on the heat exchange components during operation, the distance M should be set to a value no less than the second parameter value. For example, the second parameter value can be 120mm to 125mm. A suitable specific parameter should be selected during the design process.

[0152] It should be noted that in this application, the distance between the refrigerant leak sensor 5 and other components refers to the distance between the detection port or probe center of the refrigerant leak sensor 5 and the corresponding component.

[0153] In some embodiments, reference Figure 19 In a vertically installed position, the distance between the refrigerant leakage sensor 5 and the bottom of the heat exchange chamber 161 in the direction of gravity is H1, and the height of the heat exchange chamber is L, where H1≤0.19L.

[0154] refer to Figure 18 In a horizontal installation position, the distance between the refrigerant leak sensor 5 and the bottom of the heat exchange chamber 161 in the direction of gravity is H2, and the height of the heat exchange chamber is D. H2≤0.36D.

[0155] It is understandable that the distance dimension in the direction of gravity mentioned above is the vertical distance between the refrigerant leak sensor 5 and the bottom end of the heat exchange chamber 161 at its bottom, under the current installation posture.

[0156] The distances H1 and H2 should not be too large. If they are too large, the refrigerant leak sensor 5 will be too far from the bottom of the heat exchange chamber 161 in either a vertical or horizontal installation position. This will cause the refrigerant leak sensor 5 to detect leaking refrigerant with delay or inaccuracy, and will not be able to capture the refrigerant leak in time.

[0157] In this embodiment, the distance dimension H1 is set to be no greater than the third parameter value, and the distance dimension H2 is set to be no greater than the fourth parameter value. This ensures that when the refrigerant leak sensor 5 is installed within this range, it can accurately detect refrigerant leaks, guaranteeing that the refrigerant leak sensor 5 can monitor refrigerant leaks in real time and accurately. For example, the third parameter value can be 0.17L to 0.19L, and the fourth parameter value can be 0.34D to 0.36D. A suitable and specific parameter should be selected during the design process.

[0158] In some embodiments, H1 ≥ 0.12L, H2 ≥ 0.25D.

[0159] It is understandable that the water collection tray is installed at the bottom of the heat exchange chamber 161, meaning that the bottom of the heat exchange chamber 161 can be the bottom of the water collection tray. Specifically, in a vertical orientation, the distance H1 can be the vertical distance between the refrigerant leak sensor 5 and the bottom of its first water collection tray 151; in a horizontal orientation, the distance H2 can be the vertical distance between the refrigerant leak sensor 5 and the bottom of its second water collection tray 152.

[0160] The distances H1 and H2 should not be too small. If they are too small, the refrigerant leak sensor 5 will be too close to the drip tray at its bottom, and the condensate produced by the heat exchange components may affect the normal operation of the refrigerant leak sensor 5. Especially in low-temperature or high-condensation environments, the condensate in the drip tray may cause the sensor to freeze or frost up.

[0161] To ensure the operational stability of the refrigerant leak sensor 5, the distance dimension H1 is set to be no less than the fifth parameter value, and the distance dimension H2 is set to be no less than the sixth parameter value. This prevents condensate generated during the operation of the duct unit from dripping or overflowing onto the refrigerant leak sensor 5, thus avoiding damage to it. For example, the fifth parameter value can be 0.12L to 0.13L, and the sixth parameter value can be 0.25D to 0.27D. In specific design, a suitable and specific parameter should be selected.

[0162] For example, the distance dimension H1 can be 0.15L, and the distance dimension H2 can be 0.31D.

[0163] In the above embodiments, by reasonably setting the distance dimensions H1 and H2, it can be ensured that the distance between the refrigerant leakage sensor 5 and the bottom of the heat exchange chamber 161 is close enough, whether the duct air conditioner is installed vertically or horizontally. This ensures that the refrigerant leakage sensor 5 can accurately detect refrigerant leakage and effectively avoids adverse consequences such as condensate water in the drip tray splashing or soaking the refrigerant detection sensor.

[0164] It should be noted that, in reference Figure 13 In the vertical installation position shown, the base plate forms the bottom of the heat exchange chamber 161. In such a position... Figure 15 , Figure 16 In the horizontal installation position shown, the duct unit is placed horizontally. In this case, the left or right side plate forms the bottom of the heat exchange chamber 161.

[0165] Regardless of whether the ducted air conditioner is installed vertically or horizontally, the height of the heat exchange chamber 161 is the vertical dimension of the heat exchange chamber 161 in the current orientation. In this embodiment, the length of the heat exchange chamber 161 is the height of the heat exchange chamber 162 in the vertical orientation, and the width of the heat exchange chamber 161 is the height of the heat exchange chamber 161 in the horizontal orientation, which is the distance between the far sides of the left and right side plates.

[0166] Understandably, since the refrigerant concentration is higher at the bottom of the heat exchange chamber 161, the smaller the distance between the refrigerant leak sensor 5 and the bottom of the heat exchange chamber 161, the better the detection effect of the refrigerant leak sensor 5.

[0167] In some embodiments, reference Figure 20The mounting part 8 may include a connecting section 82, which is connected to the refrigerant leak sensor 5.

[0168] The mounting section 8 may include a guide section 83, which is connected to the end of the connecting section 82 away from the refrigerant leak sensor 5. The guide section 83 is tapered in the direction from the connecting section 82 away from the refrigerant leak sensor 5. A through hole 81 may be provided on the guide section.

[0169] In this embodiment, the guide portion can serve as an installation guide, facilitating connection with the insertion slot 62.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0171] 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 ducted air conditioner, characterized in that, The duct unit has both vertical and horizontal installation options and includes: The casing has a fan chamber and a heat exchange chamber formed along its length. At both ends of the casing along its length, there are air inlets communicating with the heat exchange chamber and air outlets communicating with the fan chamber. A heat exchange assembly is disposed within the heat exchange cavity to exchange heat with the indoor air of the casing; A fan is installed inside the fan cavity to draw indoor air into the casing from the air inlet, and after heat exchange by the heat exchange components, it is sent out from the air outlet. A refrigerant detection device is used to detect refrigerant leakage from the heat exchange assembly. The refrigerant detection device includes: The fixing base includes: A substrate is mounted on the heat exchange assembly; A connector is attached to one side of the substrate; A fixing part is connected to the opposite side of the substrate; The refrigerant leak sensor has mounting parts on opposite sides. One of the two mounting parts is adapted to be inserted into the plug-in part, and the other of the two mounting parts is detachably connected to the fixing part.

2. The duct air conditioner according to claim 1, characterized in that, The insertion part includes a first side plate and an insertion groove. The first side plate is vertically connected to the substrate. The insertion groove is disposed through the first side plate along the thickness direction. The insertion groove is inserted into and engaged with one of the mounting parts.

3. The duct air conditioner according to claim 1 or 2, characterized in that, The mounting part has a through hole, and the fixing part includes a second side plate and a connecting hole. The second side plate is connected to the base plate, and the connecting hole is provided on the second side plate. Fasteners pass through the through hole and are connected in the connecting hole so that the refrigerant leakage sensor is fixed on the fixing base.

4. The duct air conditioner according to claim 3, characterized in that, The heat exchange assembly includes two straight heat exchangers arranged at an angle to each other, with a support plate connecting the two straight heat exchangers. The support plate and the two straight heat exchangers enclose an airflow space, and the fixing seat is installed on the side of the support plate facing the housing.

5. The duct air conditioner according to claim 4, characterized in that, The connecting hole is a flanged hole, and the support plate is provided with a through hole corresponding to the flanged hole, with the flanged hole passing through the through hole.

6. The duct air conditioner according to claim 4, characterized in that, The heat exchange assembly also includes a water receiving tray, which is located at the bottom of the heat exchange chamber and is used to collect condensate from the two straight-section heat exchangers. The water receiving tray has a drain outlet, and the distance between the projection of the drain outlet on the plane of the support plate and the refrigerant leakage sensor is M, where M≤145mm and M≥120mm.

7. The duct air conditioner according to claim 1 or 6, characterized in that, In the vertical and horizontal installation orientations, the distances between the refrigerant leak sensor and the bottom of the heat exchange cavity in the direction of gravity are H1 and H2, respectively; in the vertical and horizontal installation orientations, the heights of the heat exchange cavity are L and D, respectively, where H1≤0.19L and H2≤0.36D.

8. The duct air conditioner according to claim 7, characterized in that, H1≥0.12L, H2≥0.25D.

9. The duct air conditioner according to claim 1, characterized in that, The mounting section includes a connecting section and a guide section. The guide section is connected to the end of the connecting section away from the refrigerant leak sensor, and the guide section is tapered in the direction from the connecting section away from the refrigerant leak sensor.

10. A ducted air conditioner, characterized in that, The duct unit has both vertical and horizontal installation options and includes: The casing has a fan chamber and a heat exchange chamber formed along its length. At both ends of the casing along its length, there are air inlets communicating with the heat exchange chamber and air outlets communicating with the fan chamber. A heat exchange assembly is disposed within the heat exchange cavity to exchange heat with the indoor air of the casing; A fan is installed inside the fan cavity to draw indoor air into the casing from the air inlet, and after heat exchange by the heat exchange components, it is sent out from the air outlet. A refrigerant detection device is used to detect refrigerant leakage from the heat exchange assembly. The refrigerant detection device includes: A mounting base is pre-installed on the heat exchange assembly, and the mounting base has a plug-in part and a fixing part on opposite sides respectively; A refrigerant leak sensor has mounting parts on opposite sides. When the refrigerant leak sensor is installed, one of the two mounting parts is inserted into the plug-in part and connected to the plug-in part, and the other of the two mounting parts is screwed to the fixing part, so that the refrigerant leak sensor can be detachably connected to the fixing base.

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