Duct type air conditioner

Abstract

The ducted air conditioner comprises a shell, a heat exchanger, a fan and an electric control assembly, the electric control assembly comprises an electric control box and a circuit board, and the circuit board is arranged in the electric control box; the heat exchanger, the fan and the electric control assembly are arranged in the shell. The circuit board is electrically connected with the fan. Besides, a mounting support frame is arranged in the shell, a ventilation connecting port and an electrical connecting port are formed in the mounting support frame, and an outlet of the fan is communicated with the air outlet through the ventilation connecting port; the electric control box is provided with a pre-positioning mounting part and a first connecting and fixing part, the first connecting and fixing part is arranged far away from the pre-positioning mounting part, the pre-positioning mounting part extends to the outer side of the electric control box, and the pre-positioning mounting part penetrates through the electrical connecting port and is in lap joint with the mounting support frame; and the first connecting and fixing part is fixedly connected to the shell. The use amount of screws is reduced, so that the assembly efficiency of the duct type air conditioner is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a ducted air conditioner. Background Art

[0002] Air conditioners are common household appliances in our daily lives. They are categorized as wall-mounted or cabinet-type. They typically consist of an indoor unit and an outdoor unit, with the indoor unit installed indoors and the outdoor unit installed outdoors. Ducted air conditioners are a type of central air conditioner, typically connecting the indoor and outdoor units. Air supply ducts run from the room to each room, then return to the outdoor unit through return ducts. The air is then cooled, mixed with fresh air, and then re-distributed.

[0003] Chinese Patent Publication No. CN211952996U discloses a ducted air conditioner having an electrical control box disposed within a housing. During assembly, the electrical control box is mounted to a side panel of the housing. During actual assembly, the electrical control box is secured to the housing using screws. Typically, the electrical control box is secured to the housing using screws on all four sides. This requires a large number of screws during assembly, reducing the efficiency of the ducted air conditioner assembly.

[0004] In view of this, how to design a technology to improve the assembly efficiency of the duct unit is the technical problem to be solved by this application. Summary of the Invention

[0005] In response to the problems pointed out in the background technology, the present application proposes a duct unit that reduces the amount of screws used to effectively improve the assembly efficiency of the duct unit.

[0006] To achieve the above application objectives, this application adopts the following technical solutions:

[0007] In some embodiments of the present application, a ducted air conditioner is provided, comprising:

[0008] a housing, wherein the housing is provided with an air inlet and an air outlet;

[0009] a heat exchanger configured to exchange heat with an airflow flowing therethrough to form a heat exchange airflow;

[0010] a fan configured to introduce airflow through the air inlet and send it out through the air outlet after passing through the heat exchanger;

[0011] An electric control assembly, the electric control assembly comprising an electric control box and a circuit board, the circuit board being disposed in the electric control box;

[0012] The heat exchanger, the fan and the electronic control component are arranged in the housing, and the circuit board is electrically connected to the fan;

[0013] In addition, a mounting support frame is provided in the outer shell, and a ventilation connection port and an electrical connection port are provided on the mounting support frame, and the outlet of the fan is connected with the air outlet through the ventilation connection port; a pre-positioning mounting portion and a first connecting and fixing portion are provided on the electrical control box, and the first connecting and fixing portion is arranged away from the pre-positioning mounting portion, and the pre-positioning mounting portion extends to the outside of the electrical control box, and the pre-positioning mounting portion passes through the electrical connection port and overlaps the mounting support frame, and the first connecting and fixing portion is fixedly connected to the outer shell.

[0014] In one embodiment of the present application, the mounting support frame is provided with an auxiliary connecting and fixing portion, the electric control box is provided with a second connecting and fixing portion, and the second connecting and fixing portion and the pre-positioning mounting portion are arranged on the same side of the electric control box;

[0015] The second connecting and fixing portion is fixedly connected to the auxiliary connecting and fixing portion.

[0016] In one embodiment of the present application, the auxiliary connection fixing portion includes a plurality of first fixing plates arranged at intervals, and a pre-installed notch is formed between two adjacent first fixing plates;

[0017] The pre-positioning installation portion includes a plurality of pre-positioning plug-ins arranged at intervals, the second connection and fixing portion is a plurality of second fixing plates, and the pre-positioning plug-ins and the second fixing plates are alternately arranged on the electric control box;

[0018] The pre-positioning plug plate is inserted into the pre-installed notch and overlapped on the installation support frame, and the first fixing plate and the second fixing plate are fixed together by screws.

[0019] In one embodiment of the present application, the mounting support frame is further provided with a first positioning plug-in portion, and the first positioning plug-in portion is located on one side of the electrical connection port;

[0020] The electric control assembly further includes a covering component, one end of which is inserted into the first positioning plug-in portion, and the other end of which is fixedly connected to the mounting support frame, and the covering component covers the electrical connection port.

[0021] In one embodiment of the present application, the electric control box includes a box body and a maintenance cover, and the box body is provided with the pre-positioning installation portion and the first connecting and fixing portion;

[0022] One end of the maintenance cover is provided with a flange structure, and the other end of the maintenance cover is provided with a fixing hole;

[0023] The covering component is provided with a second positioning plug-in portion, the flanging structure is plugged into the second positioning plug-in portion, and a screw passes through the fixing hole and is fixedly connected to the box body.

[0024] In one embodiment of the present application, the fan and the electric control box are arranged side by side on the mounting support frame, and a heat dissipation duct is formed between the electric control box and the volute of the fan;

[0025] The electric control box is provided with a heat dissipation port, the heat dissipation component is arranged in the heat dissipation port, the heat dissipation component is thermally connected to the circuit board, and the heat dissipation component is located in the heat dissipation duct and adjacent to the volute of the fan.

[0026] In one embodiment of the present application, the surface of the electrical control box adjacent to the fan volute is a guide surface, and the guide surface is arranged at an angle. The heat dissipation duct is formed between the guide surface and the outer wall of the fan volute. Along the airflow direction of the heat dissipation duct, the heat dissipation duct has a tapered structure.

[0027] In one embodiment of the present application, a deflection cover is further provided on the ventilation connection port, and the cross-sectional area of the deflection cover tends to increase along the air outlet direction.

[0028] In one embodiment of the present application, mounting slots are provided on both sides of the ventilation connection port on the mounting support frame, and the volute of the fan is inserted into the mounting slots.

[0029] Another embodiment of the present application further provides a ducted air conditioner, comprising:

[0030] a housing, wherein the housing is provided with an air inlet and an air outlet;

[0031] a heat exchanger configured to exchange heat with an airflow flowing therethrough to form a heat exchange airflow;

[0032] a fan configured to introduce airflow through the air inlet and send it out through the air outlet after passing through the heat exchanger;

[0033] An electric control assembly, the electric control assembly comprising an electric control box and a circuit board, the circuit board being disposed in the electric control box;

[0034] The heat exchanger, the fan and the electronic control component are arranged in the housing, and the circuit board is electrically connected to the fan;

[0035] In addition, the electric control box is provided with a pre-positioning installation part and a connecting and fixing part, and the pre-positioning installation part and the connecting and fixing part are distributed at different ends of the electric control box. The pre-positioning installation part is configured to be inserted, clamped or overlapped on the outer shell, and the connecting and fixing part is configured to be fixedly connected to the outer shell.

[0036] Compared with the prior art, the advantages and positive effects of the present application are: by providing a pre-positioning installation part and a connecting and fixing part on the electric control box, when the electric control box is assembled to the shell, the electric control box can first be pre-positioned and assembled together with the shell through the pre-positioning installation part. The pre-positioning installation part adopts a non-screw quick-installation structure, which can quickly pre-assemble the electric control box to the shell, and then fix it to the shell through the connecting and fixing part. With the cooperation of the pre-positioning installation part and the connecting and fixing part, the electric control box is firmly fixed to the shell. On the one hand, the use of screws can be reduced, and on the other hand, the assembly efficiency of the duct machine can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a structural diagram of an embodiment of the ducted air conditioner of the present application;

[0038] Figure 2 for Figure 1 One of the partial structural diagrams of the medium-wind tube machine;

[0039] Figure 3 for Figure 2 One of the structural diagrams of the heat exchange component;

[0040] Figure 4 for Figure 2 The second structural diagram of the heat exchange component;

[0041] Figure 5 for Figure 3 Schematic diagram of the partial structure of the heat exchanger;

[0042] Figure 6 for Figure 3 Schematic diagram of the structure of the middle water tray;

[0043] Figure 7 This is a structural diagram of another embodiment of the ducted air conditioner of the present application;

[0044] Figure 8 for Figure 1 Schematic diagram of the structure of the hoisting components in the medium-wind pipe machine;

[0045] Figure 9 for Figure 8 Schematic diagram of the structure of the middle load-bearing component;

[0046] Figure 10 for Figure 2 Assembly drawing of the blower and electronic control components;

[0047] Figure 11 for Figure 10 Assembly drawing of the support frame and electronic control components;

[0048] Figure 12 for Figure 10Exploded diagram of the assembly of the blower and electronic control components;

[0049] Figure 13 for Figure 1 Schematic diagram of the partial structure of the medium-pressure pipe machine (part 2);

[0050] Figure 14 for Figure 2 Schematic diagram of the structure of the CLP auxiliary heating component. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] In this application, the air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0053] Low-temperature, low-pressure refrigerant enters the compressor, which compresses it into high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat into the surrounding environment through the condensation process.

[0054] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser to a lower-pressure liquid. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves cooling by utilizing the latent heat of evaporation to exchange heat with the material being cooled. Throughout this cycle, the air conditioner regulates the temperature of the indoor space.

[0055] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0056] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0057] like Figure 1-Figure 2 As shown, an embodiment of the present application provides a duct air conditioner, including: a shell 1, a heat exchange component 2, a fan 3, an electronic control component 4 and other components.

[0058] The housing 1 serves as an external support and protection body for mounting related components. In order to meet the requirements of air flow and heat exchange, the housing 1 is provided with an air inlet 11 and an air outlet 12.

[0059] The heat exchange assembly 2 is used to perform heat exchange processing on the airflow flowing into the housing 1 to achieve heating and / or cooling of the airflow. The heat exchange assembly 2 includes a heat exchanger 21, which is configured to heat the airflow flowing through it to form a heat exchange airflow.

[0060] Since the condensed water or defrost water generated during the use of the heat exchanger 21 needs to be collected and discharged, the heat exchange assembly 2 further includes a water receiving pan 22, which is arranged at the bottom of the heat exchanger 21 and is used to collect the water left on the heat exchanger 21. The heat exchanger 21 is placed on the water receiving pan 22.

[0061] The fan 3 serves as an airflow driving component. The fan 3 drives the airflow to be introduced through the air inlet 11 , pass through the heat exchanger 21 , and then be sent out from the air outlet 12 .

[0062] The electric control assembly 4 is mainly used to realize electrical connection with an external power supply, and can also control the operation of the internal electrical components of the duct machine.

[0063] The heat exchange assembly 2 , the fan 3 and the electric control box 41 are arranged in the housing 1 . Along the airflow direction inside the housing 1 , the heat exchange assembly 2 and the electric control box 41 are arranged in sequence.

[0064] In one embodiment of the present application, Figures 1-13 As shown, the housing 1 is further provided with a hollow mounting portion 19, which is configured to selectively mount an electric auxiliary heating component 6 or a blocking component 7; the electric auxiliary heating component 6 is configured to be electrically connected to the circuit board to heat the air flowing through and output it from the air outlet, and the blocking component 7 is configured to cover the hollow mounting portion 19.

[0065] Specifically, a hollow mounting portion 19 is provided on the housing 1 , and the hollow mounting portion 19 can be used to install the electric auxiliary heating component 6 or the blocking component 7 as needed.

[0066] like Figure 2 As shown, if the duct air conditioner needs to be equipped with an electric auxiliary heating component 6, the electric auxiliary heating component 6 can be installed in the hollow installation portion 19, so that the electric auxiliary heating component 6 can heat the air flowing through and finally output it from the air outlet 12.

[0067] like Figure 13As shown, for the case where the duct air conditioner does not need to be equipped with an electric auxiliary heating component 6, the hollow mounting portion 19 can be installed with a blocking component 7. The blocking component 7 is generally a plate-shaped structure, and the hollow mounting portion 19 is covered by the blocking component 7.

[0068] By providing a hollow mounting portion 19 on the shell, the hollow mounting portion 19 can meet the installation requirements of the electric auxiliary heating component 6, and then when the duct machine needs to be equipped with the electric auxiliary heating component 6, the electric auxiliary heating component 6 can be assembled on the hollow mounting portion 19. At the same time, the hollow mounting portion 19 can also be blocked by the blocking component 7. For the duct machine that is not equipped with the electric auxiliary heating component 6, the hollow mounting portion 19 can be blocked by the blocking component 7. In this way, for the shell, a shell with the same structural configuration can meet the requirements of whether or not to configure the electric auxiliary heating component 6. The shell has stronger versatility, which reduces the manufacturing cost of the duct machine.

[0069] In one embodiment, in order to meet the requirements of quick and secure installation of the electric auxiliary heating component 6, the housing is further provided with a support mounting portion 191 and a hollow mounting portion 19, the support mounting portion 191 and the hollow mounting portion 19 are arranged opposite to each other; an installation area is formed between the support mounting portion 191 and the hollow mounting portion 19, and the installation area is arranged near the air outlet;

[0070] The installation area is configured to install the electric auxiliary heating component 6, and the hollow installation portion 19 is also configured to install the blocking component 7;

[0071] The electric auxiliary heating component 6 is configured to be electrically connected to the circuit board to heat the air flowing through and output it from the air outlet, and the blocking component 7 is configured to cover the hollow installation portion 19.

[0072] Specifically, when installing the electric auxiliary heating component 6 in the outer shell, one end of the electric auxiliary heating component 6 will be installed and fixed by the support mounting portion 191, and the other end of the electric auxiliary heating component 6 will be installed on the hollow mounting portion 19. On the one hand, the hollow mounting portion 19 is used to meet the requirements of wire routing, and on the other hand, the hollow mounting portion 19 is covered by the other end of the electric auxiliary heating component 6 to avoid air leakage.

[0073] In one embodiment, if Figure 14 As shown, the electric auxiliary heating component 6 includes an electric heating element 61 and an electric auxiliary heating bracket 62, and the electric heating element 61 is arranged on the electric auxiliary heating bracket 62;

[0074] One end of the electric auxiliary heating bracket 62 is provided with a first connecting portion 621, and the other end of the electric auxiliary heating bracket 62 is provided with a second connecting portion 622;

[0075] The first connecting portion 621 is configured to be connected to the supporting mounting portion 191, the second connecting portion 622 is configured to be connected to the hollow mounting portion 19, the wiring end of the electric heating element 61 is located at the hollow mounting portion 19, and the wiring end 611 of the electric heating element 61 is electrically connected to the circuit board.

[0076] Specifically, during the actual assembly process, the electric auxiliary heating bracket 62 passes through the hole formed by the hollow mounting portion 19 so that the first connecting portion 621 is connected to the support mounting portion 191, and then the second connecting portion 622 is connected to the outer periphery of the hollow mounting portion 19 and the hollow mounting portion 19 is covered by the second connecting portion 622.

[0077] In one embodiment, the support and mounting portion 191 is a plug-in slot formed on the housing, and the first connection portion 621 is a plug-in protrusion formed on the electric auxiliary heating bracket 62 , and the plug-in protrusion is inserted into the plug-in slot.

[0078] Specifically, the housing is provided with a plug-in slot, and correspondingly, the electric auxiliary heating bracket 62 is provided with a plug-in protrusion, which is inserted into the plug-in slot to connect the first connecting portion 621 with the support mounting portion 191 .

[0079] Alternatively, the support mounting portion 191 is a lap joint portion formed on the outer shell, the lap joint portion protrudes from the inner wall of the outer shell, the first connecting portion 621 is a lap joint fitting portion formed on the electric auxiliary heating bracket 62, the lap joint fitting portion is overlapped on the lap joint portion, and the lap joint fitting portion and the lap joint portion are fastened together by screws.

[0080] Specifically, a protruding overlapping portion (such as a support plate) is formed inside the shell, and an overlapping matching portion (such as a overlapping plate) extending outward is provided on the electric auxiliary heating bracket 62. After the electric auxiliary heating bracket 62 passes through the hole formed by the hollow mounting portion 19, the overlapping matching portion is overlapped and assembled on the overlapping portion.

[0081] In some embodiments, an air outlet channel is formed in the housing, the outlet of the air outlet channel forms the air outlet, and the inlet of the air outlet channel is connected to the outlet of the fan;

[0082] The air outlet channel is provided with the support mounting portion 191 and the hollow mounting portion 19;

[0083] The second connecting portion 622 is a plate-shaped structure. The second connecting portion 622 is arranged outside the air outlet channel and covers the hollow mounting portion 19. The electric auxiliary heating bracket 62 passes through the hollow mounting portion 19 and extends into the air outlet channel.

[0084] Specifically, an air outlet channel may be provided in the housing between the fan and the air outlet. The air outlet channel connects the outlet of the fan with the air outlet of the housing, and the electric auxiliary heating component 6 is assembled into the air outlet channel.

[0085] In one embodiment, a wire threading opening 623 is provided on the second connecting portion 622 , and the connection end of the electric heating element 61 is located in the wire threading opening 623 ; a protective cover 63 is also provided on the electric auxiliary heating bracket 62 , and the protective cover 63 covers the outside of the wire threading opening 623 .

[0086] Specifically, in order to meet the wiring requirements of the electric heating element 61, a wire threading hole 623 can be set on the second connecting part 622. The wiring end of the electric heating element 61 will be located in the wire threading hole 623 to achieve connection with the circuit board through wires, thereby realizing power supply to the electric heating element 61.

[0087] In addition, in order to reduce air leakage at the threading opening 623 , a protective cover 63 may be provided on the electric auxiliary heating bracket 62 , and the threading opening 623 may be covered by the protective cover 63 to reduce air leakage from the threading opening 623 .

[0088] In another embodiment, in order to improve assembly accuracy and efficiency, a positioning column 624 may be further provided on the second connecting portion 622 , and a positioning groove 192 may be further provided on the housing, and the positioning column 624 may be inserted into the positioning groove 192 .

[0089] Specifically, after the electric auxiliary heating bracket 62 passes through the hollow mounting portion 19, before the second connecting portion 622 is fixedly connected to the outer periphery of the hollow mounting portion 19, the positioning column 624 will be inserted into the positioning groove 192 to accurately position the position of the second connecting portion 622, so that the mounting hole on the second connecting portion 622 can be aligned with the threaded hole arranged on the outside of the hollow mounting portion 19, and the second connecting portion 622 and the hollow mounting portion 19 are fastened by screws passing through the mounting holes.

[0090] In some embodiments, in order to independently control the electric auxiliary heating component 6, the electric control component further includes a heating control box 47;

[0091] The circuit board includes a main control board (not marked) and a heating control board (not marked), the main control board is electrically connected to the heating control board, and the heating control board is electrically connected to the electric auxiliary heating component 6;

[0092] The main control board is arranged in the electric control box, and the heating control board is arranged in the heating control box 47; the heating control box 47 is arranged on the electric control box and arranged on the outside of the electric auxiliary heating component 6.

[0093] Specifically, for the air duct unit equipped with the electric auxiliary heating component 6, the electric control component is additionally equipped with a heating control box 47, and a heating control board is provided in the heating control box 47 to control the electric control component through the heating control board.

[0094] In one embodiment of the present application, Figures 1-6 As shown, the heat exchanger 21 includes two heat exchange components, namely a first heat exchange component 212 and a second heat exchange component 213. The first heat exchange component 212 and the second heat exchange component 213 are arranged relative to each other at an angle, and the first heat exchange component 212 and the second heat exchange component 213 have an overall V-shaped structure. The first heat exchange component 212 and the second heat exchange component 213 are equipped with refrigerant pipes and heat dissipation fins to meet ventilation and heat dissipation requirements.

[0095] The heat exchanger also includes an end plate 214, which is arranged on the corresponding sides of the first heat exchange component 212 and the second heat exchange component 213, so as to block the two sides of the first heat exchange component 212 and the second heat exchange component 213 through the end plate 214, and prevent the air flow from leaking from the two sides of the two heat exchange components through the end plate 214.

[0096] In one embodiment, two tube sheets 210 are provided at the ends of the heat exchanger. The two tube sheets 210 at the same end are arranged relative to each other and tilted. Heat exchange tubes (not marked) are provided between the two tube sheets 210 arranged relative to each other at the two ends of the heat exchanger.

[0097] In addition, end plates 214 are respectively provided at both ends of the heat exchanger. The end plates 214 are located between the two tube plates 210 . The end plates 214 are configured to be detachably preassembled with the tube plates 210 .

[0098] The tube plate 210 is provided with an inserting portion 2101 , and the end plate 214 is provided with an inserting fitting portion 2141 . The inserting portion 2101 is inserted into the inserting fitting portion 2141 .

[0099] Specifically, during the actual assembly process of the heat exchanger, it is necessary to position the two tube sheets 210 so that the two tube sheets 210 are arranged in an inclined state. The insertion portion 2101 provided on the tube sheet 210 and the insertion fitting portion 2141 provided on the end plate 214 are inserted together to pre-assemble and position the tube sheets 210 on both sides through the end plate 214. In this way, on the one hand, the tube sheets 210 on both sides of the end plate 214 can maintain a relatively inclined state, and on the other hand, the end plate 214 can locate the positions of the tube sheets 210 on both sides, so that the relevant mounting holes on the tube sheet 210 can reach a precise mounting position, thereby facilitating assembly and fixation by the operator.

[0100] In one embodiment, the insertion portion 2101 is a first insertion tongue formed on the tube plate 210, and the insertion-fitting portion 2141 is a first insertion hole formed on the end plate 214, and the first insertion tongue is inserted into the first insertion hole; alternatively, the insertion portion 2101 is a second insertion hole formed on the tube plate 210, and the insertion-fitting portion 2141 is a second insertion tongue formed on the end plate 214, and the second insertion tongue is inserted into the second insertion hole.

[0101] Specifically, the tube plate 210 can be conveniently pre-assembled onto the end plate 214 by using a socket-and-tongue combination.

[0102] Similarly, for the tube sheet 210 , a clamping portion may be further provided on the tube sheet 210 , and correspondingly, a clamping fitting portion is provided on the end plate 214 , and the clamping portion is inserted into the clamping fitting portion.

[0103] Specifically, the tube sheet 210 is mounted on the end plate 214 via the snap-fitting portions, thereby pre-assembling the tube sheet 210 to the end plate 214. The snap-fitting portions and the snap-fitting portions can be implemented by, for example, a tongue engaging a slot or a hole, and are not described in detail herein.

[0104] By pre-assembling the two tube sheets 210 of the heat exchanger with the corresponding end plates 214, in the actual assembly process, the corresponding tube sheets 210 can be pre-assembled and positioned through the end plates 214. After the insertion portion 2101 and the insertion fitting portion 2141 are connected together, the tube sheets 210 can be positioned and installed through the end plates 214, and the inclination angles of the two tube sheets 210 can be automatically adjusted and positioned. At the same time, the relevant mounting holes on the tube sheets 210 can be aligned with each other, so that the operator can quickly tighten the screws, thereby improving the assembly efficiency of the heat exchanger and the overall assembly efficiency of the duct unit.

[0105] In some embodiments, a plurality of the inserting portions 2101 are provided on the edge of the tube plate 210 adjacent to the end plate 214 , and a plurality of the inserting fitting portions 2141 are provided on both sides of the end plate 214 , respectively. The inserting portions 2101 are inserted into the corresponding inserting fitting portions 2141 .

[0106] Specifically, in order to improve the connection reliability between the tube sheet 210 and the end plate 214 and to utilize the end plate 214 to achieve a better pre-assembly positioning effect on the tube sheet 210, a plurality of inserting portions 2101 and inserting fitting portions 2141 are used to insert the tube sheet 210 and the end plate 214 together.

[0107] Similarly, for the clamping method, the tube plate 210 and the end plate 214 are clamped together by using a plurality of clamping parts and clamping matching parts to cooperate with each other.

[0108] In one embodiment, the heat exchanger is further provided with a connecting component 215 , and the connecting component 215 is arranged between the two end plates 214 ;

[0109] The two tube sheets 210 located at the same end are connected to the corresponding ends of the connecting component.

[0110] Specifically, the adjacent ends of the first heat exchange component 212 and the second heat exchange component 213 are respectively disposed on the connecting component 215, and an air inlet area is formed between the ends of the first heat exchange component 212 and the second heat exchange component 213 that are separated from each other. The connecting component 215 can fixedly connect the first heat exchange component 212 and the second heat exchange component 213. The connecting component 215 can also cover the ends of the first heat exchange component 212 and the second heat exchange component 213 to prevent airflow from leaking between the ends of the first heat exchange component 212 and the second heat exchange component 213.

[0111] In another embodiment, an extended connection portion 2151 is provided on both sides of the end of the connecting component 215, and the extended connection portion 2151 extends toward the tube sheet 210 on the corresponding side, and the extended connection portion 2151 is connected to the tube sheet 210 on the corresponding side.

[0112] Specifically, to improve the reliability of the connection between the connecting component 215 and the first heat exchange component 212 and the second heat exchange component 213, an extension connection portion 2151 is provided on the connecting component. The extension connection portion 2151 can extend to the corresponding tube sheet 210, thereby securing the extension connection portion 2151 to the tube sheet 210. For example, the extension connection portion 2151 can be secured to the tube sheet 210 using screws, thereby securing the first heat exchange component 212 and the second heat exchange component 213 to the connecting component 215.

[0113] In another embodiment of the present application, in order to meet the requirement of detecting whether there is refrigerant leakage in the heat exchanger, a refrigerant detection sensor 23 can be provided on the heat exchanger. The refrigerant detection sensor 23 can detect the refrigerant leakage in time when the refrigerant leakage occurs in the heat exchanger to perform corresponding processing such as shutdown alarm.

[0114] In a certain embodiment, in order to facilitate the operator to easily assemble the refrigerant detection sensor 23, a mounting support portion 216 can be further provided on the heat exchanger. The mounting support portion 216 is arranged on the windward side of the heat exchanger and arranged opposite to the air inlet. The refrigerant detection sensor 23 is also provided on the mounting support portion 216.

[0115] Specifically, mounting support 216 is positioned on the windward side of the heat exchanger, which in turn faces the air inlet. This allows mounting support 216 to be exposed to the air inlet. During assembly, the operator can insert refrigerant detection sensor 23 into the housing through the housing's air inlet and securely mount it to mounting support 216. This eliminates the difficulty associated with installing refrigerant detection sensor 23 between the heat exchanger and the sidewall of the housing.

[0116] In some embodiments, the mounting support portion 216 is located between two oppositely arranged tube sheets 210 .

[0117] Specifically, the mounting support portion 216 is located between the oppositely arranged tube sheets 210 at both ends of the heat exchanger, so that the mounting support portion 216 can be arranged at the windward surface of the heat exchanger.

[0118] By providing a mounting support portion 216 on the heat exchanger, the mounting support portion 216 is arranged on the inner side of the end of the heat exchanger, and the space occupied by the heat exchanger can be fully utilized to place the mounting support portion 216. When installing the refrigerant detection sensor 23, the refrigerant detection sensor 23 can be placed in the outer shell through the air inlet and the refrigerant detection sensor 23 can be fixedly installed on the mounting support portion 216. Since the space between the heat exchanger and the air inlet is large and it is convenient for the operator to put his hand in to operate, the assembly difficulty is reduced, thereby improving the overall assembly efficiency of the duct machine.

[0119] In another embodiment, in order to facilitate the installation of the refrigerant detection sensor 23 , the refrigerant detection sensor 23 is provided with a mounting bracket 2161 , and the mounting bracket 2161 is detachably mounted on the mounting support portion 216 .

[0120] Specifically, during the actual assembly process, the refrigerant detection sensor 23 can first be assembled on the outside of the shell to the mounting bracket 2161. The mounting bracket 2161 can be provided with a corresponding mounting structure to meet the fixed installation requirements of the refrigerant detection sensor 23. For example, the refrigerant detection sensor 23 can be assembled on the mounting bracket 2161 by means of clip-on or screw fixing.

[0121] Then, the refrigerant detection sensor 23 assembled on the mounting bracket 2161 is placed into the shell through the air inlet of the shell, and connected to the mounting support part 216 through the mounting bracket 2161 to achieve fixed assembly of the refrigerant detection sensor 23 on the mounting support part 216.

[0122] In some embodiments, slots are provided on both sides of the mounting support portion 216 , and the mounting bracket 2161 is inserted into the slots; the mounting bracket 2161 is further connected to the mounting support portion 216 via screws.

[0123] Specifically, in order to facilitate the quick pre-assembly of the mounting bracket 2161 onto the mounting support portion 216 , slots may be provided on both sides of the mounting support portion 216 , and the mounting bracket 2161 may slide into and be inserted into the mounting support portion 216 through the slots on both sides.

[0124] There are many ways to assemble the mounting bracket 2161 and the mounting support portion 216 . For example, the mounting support portion 216 and the mounting bracket 2161 are then firmly connected together by screws.

[0125] Alternatively, the mounting bracket 2161 is mounted on the mounting support portion 216. Specifically, the mounting support portion 216 is provided with a first engaging hole, and the mounting bracket 2161 is provided with a first clamping claw, which is engaged in the first engaging hole; or the mounting support portion 216 is provided with a second clamping claw, and the mounting bracket 2161 is provided with a second engaging hole, and the second clamping claw is engaged in the second engaging hole.

[0126] In another embodiment of the present application, the water receiving tray is formed with a first water receiving portion 221 and a second water receiving portion 222. The first water receiving portion 221 is provided with a vent 223. The first water receiving portion 221 is provided in the housing and arranged between the inner walls of the housing. The first water receiving portion 221 divides the interior of the housing into an air inlet cavity and an air outlet cavity. The second water receiving portion 222 extends along the inner wall of the housing.

[0127] The heat exchanger covers the ventilation opening 223 .

[0128] Specifically, the water receiving tray is formed with a first water receiving portion 221 and a second water receiving portion 222. The first water receiving portion 221 and the second water receiving portion 222 can meet the requirement of collecting condensed water of the heat exchanger when the shell is installed vertically or horizontally.

[0129] The water receiving tray is located in the shell and divides the interior of the shell into an air inlet cavity and an air outlet cavity. The vent 223 on the first water receiving part 221 connects the air inlet cavity and the air outlet cavity. The air in the air inlet cavity enters the air outlet cavity after heat exchange through the heat exchanger.

[0130] In one embodiment, a first structural reinforcement 224 is further provided on the second water receiving portion 222 . The first structural reinforcement 224 extends in a direction away from the first water receiving portion 221 . A detachable auxiliary fixing member 225 is further provided on the first structural reinforcement 224 .

[0131] Specifically, the first structural reinforcement 224 can be made of sheet metal, while the water receiving tray can be made of plastic. The first structural reinforcement 224 can extend the water receiving area of the second water receiving portion 222 to better meet the requirements of collecting condensed water from the heat exchanger.

[0132] At the same time, since the heat exchanger 21 needs to be assembled on the water receiving tray 22, the auxiliary fixing member 225 configured on the first structural reinforcement 224 can be connected to the connecting member 214 configured on the heat exchanger 21, so that the heat exchanger 21 can be firmly installed on the water receiving tray 22.

[0133] In one embodiment, a folded connection portion 2152 is further provided at the end of the connecting component; the auxiliary fixing member 225 extends toward the connecting component, and the folded connection portion 2152 is connected to the free end of the auxiliary fixing member 225 .

[0134] Specifically, the connecting component is also made of sheet metal, and the folded connecting portion 2152 configured on the connecting component can be connected and fixed to the auxiliary fixing component 225 by screws, so that the heat exchanger 21 is assembled and fixed on the first structural reinforcement 224 on the water receiving tray 22 through the connecting component 214.

[0135] In one embodiment, first connection support portions 226 are respectively provided at both ends of the vent 223 , and ends of the heat exchanger are provided on the corresponding first connection support portions 226 .

[0136] Specifically, the end of the heat exchanger 21 can be supported by the first connecting support portion 226 , so that the heat exchanger can be securely installed on the first water receiving portion 221 of the water receiving tray.

[0137] The first connection support portion 226 is a lap plate or a support seat, the end of the heat exchanger is lapped on the lap plate, and the end of the heat exchanger rests on the support seat.

[0138] In another embodiment, in order to effectively cover the vent 223 with the heat exchanger 21 , the vent 223 is further provided with a second connecting support portion 227 , and the second connecting support portion 227 is connected to the corresponding end plate 214 .

[0139] Specifically, the two ends of the heat exchanger 21 are respectively connected to the first connecting support parts 226, and sealing strips can be added to the connection parts. Similarly, the end plates 214 on both sides of the heat exchanger 21 are connected to the second connecting support parts 227 on both sides of the vent 223. On the one hand, the periphery of the heat exchanger is well connected and fixed to the periphery of the vent 223, and on the other hand, the vent 223 can be completely covered by the heat exchanger.

[0140] In one embodiment, the end plate 214 is abutted against the outer side of the second connection support portion 227 , and the end plate 214 is fixedly connected to the second connection support portion 227 by screws.

[0141] In another embodiment, a positioning notch 2142 is provided on the edge of the end plate 214 , and a positioning protrusion 228 is provided on the second connection support portion 227 , and the positioning protrusion 228 is located in the positioning notch 2142 .

[0142] Specifically, after the heat exchanger 21 is assembled on the water receiving tray 22 , the positioning notch 2142 cooperates with the positioning protrusion 228 to perform a positioning installation function, so that the heat exchanger 21 can be accurately and reliably installed on the water receiving tray 22 .

[0143] In one embodiment, an annular protrusion structure is provided on the outer periphery of the vent 223 , and the first connection support portion 226 and the second connection support portion 227 are formed on the annular protrusion structure.

[0144] In one embodiment, if Figure 2 As shown, the heat exchanger 21 can be arranged in the air outlet cavity.

[0145] In another embodiment, Figure 7 As shown, the heat exchanger is arranged in the air inlet cavity. In this case, since the air entering the air outlet cavity first exchanges heat with the heat exchanger 21 and then enters the air outlet cavity through the vent 223, it is easy for air leakage to occur due to the gap formed between the heat exchange component 2 and the outer shell 1, resulting in condensation at the leakage point.

[0146] To this end, the following structural improvements are made to the housing 1.

[0147] In which, the heat exchange component is located in the shell, and a gap is formed between the water receiving tray and the inner wall of the shell; a shielding portion 18 is provided in the shell, and the shielding portion 18 is located in the air outlet cavity. The shielding portion 18 extends from the inner wall of the shell toward the interior of the shell, and the shielding portion 18 blocks the gap. In addition, a sealing component (not shown) is also provided between the shielding portion 18 and the heat exchange component, and the sealing component seals the gap.

[0148] Specifically, when heat exchanger 22 is located in the air outlet cavity, after the heat exchange assembly 2 is fully installed in the housing 1, a gap will be formed between the heat exchange assembly 2 and the inner wall of the housing 1. After the fan is started, the air exchanged through heat exchanger 21 enters the air outlet cavity through vent 223. Due to the existence of the gap, some air will flow through the gap. The shielding portion 18 can block the gap and seal it with a sealing component, thereby solving the problem of air leakage through the gap.

[0149] The sealing component may be a sealing material commonly used in air conditioners, such as sealing cotton.

[0150] In one embodiment, a first installation gap is formed between the end of the heat exchanger and the inner wall of the outer shell; the shielding portion 18 includes a first shielding sub-portion 181, the first shielding sub-portion 181 is located in the air outlet cavity, the first shielding sub-portion 181 covers the front side of the first installation gap, and a sealing component is provided between the first shielding sub-portion 181 and the heat exchange assembly.

[0151] Specifically, in actual use, air leakage does not always occur around the heat exchange assembly 2. Air leakage is more likely to occur at the ends of the heat exchanger. To this end, the first shielding sub-portion 181 is arranged at the front side of the first installation gap to block the gap formed between the heat exchange assembly 2 and the housing 1 at this position.

[0152] By arranging a shielding portion 18 inside the shell, the shielding portion 18 is located in the air outlet cavity and on the inner side of the heat exchanger. The shielding portion 18 presses the sealing component onto the heat exchange component, and then the gap formed between the heat exchange component and the inner wall of the shell can be sealed by the sealing component. In actual use, after the fan is started, after the air enters the shell through the air inlet, the sealing component can prevent the air from bypassing the heat exchanger and entering the air outlet cavity from the gap between the heat exchange component and the shell. On the one hand, it can reduce the occurrence of air leakage, and on the other hand, it can reduce the damage to electrical components caused by condensation caused by air leakage, so as to improve the reliability of the duct machine.

[0153] In one embodiment, a second installation gap is formed between the edge of the heat exchanger close to the first connection support portion 226 and the inner wall of the housing;

[0154] A second shielding sub-portion 182 is provided in the housing. The second shielding sub-portion 182 is located in the air outlet cavity. The second shielding sub-portion 182 covers the front side of the second installation interval.

[0155] Specifically, in order to fully shield the gaps around the heat exchange component 2 and the outer shell 1, the shielding portion 18 also includes a second shielding sub-portion 182. The second shielding sub-portion 182 can shield both sides of the docking water tray 22. The first shielding sub-portion 181 and the second shielding sub-portion 182 are distributed on the inner walls around the outer shell 1 to shield and protect the gaps between the surrounding areas of the docking water tray 22 and the inner walls of the outer shell 1.

[0156] In some embodiments of the present application, Figure 2 、 Figure 8 and Figure 9 As shown, in order to improve the installation reliability of the heat exchange component, the duct fan further includes a hanging component 5, which is arranged in the housing and located between the fan and the heat exchange component; the hanging component 5 is configured to hang and install the heat exchanger 21.

[0157] Specifically, the heat exchanger is further provided with a hanging portion 211 , and the hanging portion 211 is configured to be hung on the hanging assembly 5 when the housing is in an upright installation state.

[0158] After the hanging assembly 5 is installed in the shell, when installing the heat exchanger, the heat exchanger is hung on the hanging assembly 5 through the hanging part 211, so that the heat exchanger can be suspended and installed through the hanging assembly 5. The weight of the heat exchanger is carried by the hanging assembly 5, thereby reducing the impact of the heat exchanger 21 when it falls and causing damage to the water receiving tray 22.

[0159] In some embodiments, a hanging portion 211 is provided on the connecting component 215, and the hanging portion 211 is used to meet the requirements of hanging installation of the heat exchanger. At the same time, the connecting component 215 can effectively connect and fix the first heat exchange component 212 and the second heat exchange component 213 to ensure that after hanging installation, the first heat exchange component 212 and the second heat exchange component 213 can be firmly connected to the connecting component 215.

[0160] In one embodiment, the lifting assembly 5 includes a supporting component 51 and a bearing component 52, a limiting portion 521 is provided on the bearing component 52, the supporting component 51 is provided in the outer shell, the bearing component 52 is provided on the supporting component 51, and the bearing component 52 and the supporting component 51 are arranged in an alternating manner.

[0161] Specifically, the hanging assembly 5 is fixedly mounted in the housing via a support member 51, which supports and mounts the bearing member 52. The heat exchanger is also provided with a hanging portion 211, which is hung on the bearing member 52 and cooperates with the limiting portion 521 to limit the position of the heat exchanger.

[0162] On the one hand, the hanging portion 211 is hung on the bearing component 52 to realize the suspension installation of the heat exchanger through the bearing component 52; on the other hand, the hanging portion 211 is limited by the limiting portion 521 provided on the bearing component 52, thereby realizing the precise limitation of the installation position of the heat exchanger by the limiting portion 521 when the heat exchanger is hung on the bearing component 52 through the hanging portion 211.

[0163] In some embodiments, since the support component 51 needs to be firmly mounted with the outer shell and provide effective support, the lifting assembly 5 also includes a second structural reinforcement 53, which is arranged on the support component 51 and extends along the length direction of the support component 51.

[0164] Specifically, the support member 51 and the load-bearing member 52 in the hoisting assembly 5 are typically formed by bending sheet metal. To enhance the overall structural strength and supporting capacity of the support member 51, a second structural reinforcement 53 is additionally provided. The second structural reinforcement 53 extends along the length of the support member 51 and is fixed to the support member 51 to enhance the overall structural strength of the support member 51.

[0165] In one embodiment, an inserting portion 2101 is provided at one end of the support member 51, and a fixing portion is provided at the other end of the support member 51;

[0166] The housing is provided with an insert fitting portion 2141, and the housing is also provided with a fixed fitting portion;

[0167] The inserting portion 2101 and the inserting fitting portion 2141 are plugged together, and screws fix the fixing portion and the fixing connection portion together.

[0168] Specifically, to facilitate quick on-site assembly of the support component 51, an insert portion 2101 is provided at one end of the support component 51. During installation, the insert portion 2101 is inserted into the insert fitting portion 2141 in the housing to achieve pre-assembly. The fixing portion and the fixed connection portion are then screwed together, thereby securing the support component 51 to the housing.

[0169] In one embodiment, the entities of the fixing portion and the fixing connection portion may be in the form of a through hole and a threaded hole, that is, a screw passes through the through hole and is threadedly connected in the threaded hole.

[0170] In some embodiments, the hoisting assembly 5 includes at least two supporting components 51 arranged side by side, and the hoisting assembly 5 includes at least two bearing components 52 arranged side by side.

[0171] The outer surface of the connecting component 215 includes a first surface and a second surface, and the first surface and the second surface are arranged relatively inclined. Two hanging parts 211 are provided on the outer surface of the connecting component 215, one hanging part 211 is provided on the first surface, and the other hanging part 211 is provided on the second surface, and the two hanging parts 211 are arranged at intervals; the hanging parts 211 are provided to be hung on the corresponding supporting component 52.

[0172] Specifically, in order to reliably hang and install the heat exchanger, two hanging parts 211 are provided on the outer surface of the connecting component 215, which are spaced apart and staggered. The two hanging parts 211 can firmly hang the entire heat exchanger to ensure the posture stability of the heat exchanger during transportation and use.

[0173] In another embodiment, the housing includes a support frame 15 and a plurality of guard plates 16 , the guard plates 16 are disposed on the support frame 15 , and the insertion fitting portion 2141 and the fixed fitting portion are formed on the support frame 15 ;

[0174] The insertion portion 2101 includes a first insertion tongue 511 provided on the end of the support component 51, and the first insertion tongue 511 extends along the length direction of the support component 51. The insertion fitting portion 2141 includes a first insertion hole provided on the support frame 15, and the first insertion tongue 511 is inserted into the first insertion hole.

[0175] Specifically, the insertion portion 2101 includes a first insertion tongue 511. During assembly, the first insertion tongue 511 is inserted into a corresponding first insertion hole on the support frame 15. The first insertion tongue 511 cooperates with the first insertion hole to position the pre-assembled support component 51. The first insertion tongue 511 is inserted into the first insertion hole during assembly, which facilitates rapid assembly by on-site workers.

[0176] In one embodiment, to improve plugging reliability, the insertion portion 2101 further includes a second insertion tongue 512. The second insertion tongue 512 extends along the length of the support member 51. The second insertion tongue 512 is arranged side by side with the first insertion tongue 511. A raised portion 513 is provided on the free end of the second insertion tongue 512. The raised portion 513 extends away from the first insertion tongue 511.

[0177] The plug-in fitting portion 2141 further includes a second insertion hole provided on the support frame 15 , the second insertion tongue 512 is inserted into the second insertion hole, and the tilting portion 513 is inserted into the second insertion hole and is configured to restrict the second insertion tongue 512 from being disengaged from the second insertion hole.

[0178] Specifically, the second insertion tongue 512 configured on the insertion portion 2101 cooperates with the first insertion tongue 511 to be inserted into the corresponding insertion hole of the support frame 15. The tilting portion 513 provided on the second insertion tongue 512 can be hooked on the edge of the second insertion hole after the second insertion tongue 512 is inserted into the second insertion hole to prevent the second insertion tongue 512 from being disengaged from the second insertion hole, thereby improving the convenience during the assembly process.

[0179] In another embodiment of the present application, Figure 2 、 Figure 10 and Figure 11 As shown, in order to facilitate the installation of the fan 3 and the electronic control component 4 to improve assembly reliability and convenience, the duct air conditioner also includes an installation support frame 13, through which the fan 3 and the electronic control component 4 are installed and fixed.

[0180] Specifically, the fan 3 and the electronic control component 4 are respectively installed on the mounting support frame 13. The mounting support frame 13, the fan 3 and the electronic control component 4 are pre-assembled together outside the casing 1 to form a modular structure. Then, they are assembled and fixed in the casing 1 with the help of the mounting support frame 13 to realize the assembly of the fan 3 and the electronic control component 4 into the casing together.

[0181] In one embodiment, a pre-positioning mounting portion 401 and a connecting and fixing portion are provided on the electric control box, and the pre-positioning mounting portion 401 and the connecting and fixing portion are distributed at different ends of the electric control box. The pre-positioning mounting portion 401 is configured to be inserted, clamped, or overlapped on the outer shell, and the connecting and fixing portion is configured to be fixedly connected to the outer shell.

[0182] Specifically, during assembly of the electrical control box to the housing, the pre-positioning mounting portion 401 provided on the electrical control box is connected to the housing using a non-screw fixing method. For example, the pre-positioning mounting portion 401 can be inserted, clipped, or overlapped onto the housing. After the electrical control box and the housing are pre-assembled using the pre-positioning mounting portion 401, they are then fixedly connected to the housing using the connecting and fixing portion.

[0183] Specifically, a ventilation connection port 133 and an electrical connection port 134 are provided on the mounting support frame, and the outlet of the fan is connected to the air outlet through the ventilation connection port; a pre-positioning mounting portion 401 and a first connecting and fixing portion 402 are provided on the electrical control box 41, and the first connecting and fixing portion 402 is arranged away from the pre-positioning mounting portion 401, and the pre-positioning mounting portion 401 extends to the outside of the electrical control box 41, and the pre-positioning mounting portion 401 passes through the electrical connection port and overlaps the mounting support frame 13, and the first connecting and fixing portion 402 is fixedly connected to the outer shell.

[0184] During the assembly process, the pre-positioning installation portion 401 passes through the electrical connection port 134 and is overlapped on the installation support frame 13 , and then is fixedly connected to the housing 1 through the first connection and fixing portion 402 by screws.

[0185] By providing a pre-positioning installation part 401 and a connecting and fixing part on the electric control box, when the electric control box is assembled to the shell, the electric control box can first be pre-positioned and assembled with the shell through the pre-positioning installation part 401. The pre-positioning installation part 401 adopts a non-screw quick-installation structure, which can quickly pre-assemble the electric control box to the shell, and then fix it to the shell through the connecting and fixing part. With the cooperation of the pre-positioning installation part 401 and the connecting and fixing part, the electric control box is firmly fixed to the shell. On the one hand, the use of screws can be reduced, and on the other hand, the assembly efficiency of the duct machine can be effectively improved.

[0186] In one embodiment, the mounting support frame is provided with an auxiliary connecting and fixing portion 135, and the electric control box is provided with a second connecting and fixing portion 403, and the second connecting and fixing portion 403 and the pre-positioning mounting portion 401 are arranged on the same side of the electric control box;

[0187] The second connecting and fixing portion 403 is fixedly connected to the auxiliary connecting and fixing portion 135 .

[0188] Specifically, in order to improve the installation reliability of the electric control box, after the electric control box is overlapped on the mounting support frame 13 through the pre-positioning mounting part 401, the second connecting and fixing part 403 is fixed together with the auxiliary connecting and fixing part 135 by screws, so as to improve the assembly reliability of the electric control box 41 through the cooperation between the second connecting and fixing part 403 and the second connecting and fixing part 403.

[0189] In one embodiment, the auxiliary connection fixing portion 135 includes a plurality of first fixing plates arranged at intervals, and a pre-installed notch is formed between two adjacent first fixing plates;

[0190] The pre-positioning installation portion 401 includes a plurality of pre-positioning plug-ins arranged at intervals, and the second connection and fixing portion 403 is a plurality of second fixing plates, and the pre-positioning plug-ins and the second fixing plates are alternately arranged on the electric control box;

[0191] The pre-positioning plug plate is inserted into the pre-installed notch and overlapped on the installation support frame, and the first fixing plate and the second fixing plate are fixed together by screws.

[0192] Specifically, the auxiliary connection fixing portion 135 and the second connection fixing portion 403 may be in the form of fixing plates. During assembly, the first fixing plate and the second fixing plate are pressed against each other and fastened by screws.

[0193] At the same time, the pre-positioning installation portion 401 is composed of a plurality of pre-positioning plug-ins, which can be inserted into the pre-installed gaps formed between two adjacent first fixing plates to locate the position of the electric control box.

[0194] In one embodiment, the mounting support frame is further provided with a first positioning plug-in portion 136 , and the first positioning plug-in portion 136 is located on one side of the electrical connection port 134 ;

[0195] The electric control assembly further includes a covering component 44 , one end of which is inserted into the first positioning plug-in portion 136 , and the other end of which is fixedly connected to the mounting support frame. The covering component 44 covers the electrical connection port 134 .

[0196] Specifically, to cover and protect the electrical connection port 134 after the electrical control box is installed, the electrical control assembly further includes a cover member 44. One end of the cover member 44 engages with the first positioning plug-in portion 136 and is inserted into the mounting support frame 13, and the other end of the cover member 44 is fixed to the mounting support frame 13 with screws.

[0197] In some embodiments of the present application, the electric control box 41 may include a box body 411, in which the circuit board 42 is disposed, and the box body 411 is disposed in the housing 1. The box body 411 forms a space for mounting the circuit board 42, and is assembled into the housing 1 through the box body 411 to achieve installation and fixation of the electric control box 41.

[0198] In one embodiment, the electrical control box 41 may include a maintenance cover 412, which is detachably mounted on the box body 411. The maintenance cover 412 is detachably mounted so that when servicing the circuit board 42, the maintenance cover 412 can be removed from the box body 411 to expose the circuit board 42, thereby facilitating maintenance.

[0199] In one embodiment, the box body is provided with the pre-positioning installation portion 401 and the first connecting and fixing portion 402; one end of the maintenance cover is provided with a flange structure 404, and the other end of the maintenance cover is provided with a fixing hole (unmarked); the covering part 44 is provided with a second positioning plug-in portion 441, the flange structure 404 is inserted into the second positioning plug-in portion, and the screw passes through the fixing hole and is fixedly connected to the box body.

[0200] Specifically, in order to facilitate the installation of the maintenance cover 412, one end of the maintenance cover 412 is inserted into the second positioning plug-in portion through the flange structure 404, and the other end is fixedly connected to the box body 411 by screws passing through the fixing holes.

[0201] In one embodiment, in order to facilitate the installation of the mounting support frame 13 into the housing 1 , the mounting support frame 13 can be assembled into the housing 1 in an insertion manner.

[0202] Specifically, the housing is provided with a bearing slot 17, and the mounting support frame 13 is inserted into the bearing slot 17. Thus, during on-site assembly by the operator, the mounting support frame 13 equipped with the fan 3 and the electronic control component 4 is inserted into the bearing slot 17. On the one hand, the bearing slot 17 supports the mounting support frame 13, and on the other hand, the bearing slot 17 can also limit and fix the mounting support frame 13.

[0203] In some embodiments, the housing includes a support frame 15 and a plurality of protective plates 16 , and the protective plates 16 are detachably disposed on the support frame 15 .

[0204] The bearing slots 17 are provided on two oppositely arranged guard plates 16 , and the mounting support frame 13 is inserted between the two oppositely arranged bearing slots 17 .

[0205] Specifically, when the outer shell 1 is assembled, multiple guard plates 16 are assembled and fixed on the support frame 15. After the guard plates 16 with supporting slots 17 are fixed on the support frame 15, the mounting support frame 13 can be inserted between the two supporting slots 17 first, and then the remaining guard plates 16 can be assembled.

[0206] In another embodiment, a mounting support surface 131 is formed on the mounting support frame 13, and a ventilation connection port 132 is further provided on the mounting support surface 131;

[0207] The electric control assembly 4 includes an electric control box 41 , which serves as an installation component of the electric control assembly 4 and is installed in the housing 1 through the electric control box 41 .

[0208] The electric control assembly 4 further includes a circuit board 42, which is disposed in the electric control box 41. The circuit board 42 is configured with at least one circuit board 42 according to its function to meet power supply and control requirements.

[0209] The mounting support frame 13 is disposed in the housing 1 , the electric control box 41 is disposed on the mounting support surface 131 , and the fan 3 is disposed on the mounting support surface 131 and connected to the ventilation connection port 132 ;

[0210] The electric control box 41 and the fan 3 are located between the mounting support frame 13 and the heat exchange assembly 2 .

[0211] Specifically, the mounting support frame 13 is fixedly disposed inside the housing 1 . The mounting support frame 13 will mount and fix the electric control component 4 via the mounting support surface 131 . The electric control box 41 cooperates with the mounting support surface 131 to form a cavity.

[0212] Fan 3 is similarly mounted on mounting support frame 13. To ensure the airflow driven by fan 3, a ventilation connection port 132 is provided on mounting support surface 131. The outlet of fan 3 is connected to ventilation connection port 132. When fan 3 is activated, air enters housing 1 through air inlet 11, exchanges heat with heat exchanger 21 in heat exchange assembly 2, and then enters fan 3. Air is then output from ventilation connection port 132 and delivered to the exterior of housing 1 through air outlet 12.

[0213] In one embodiment, in order to facilitate installation of the fan 3 , the mounting support frame 13 is provided with mounting slots 133 on both sides of the ventilation connection port 132 on the mounting support surface 131 , and the volute of the fan 3 is inserted into the mounting slots 133 .

[0214] Specifically, the volute of the fan 3 can be inserted into the installation slot 133, which can achieve fixed installation on the installation support frame 13 on the one hand, and can also ensure reliable docking between the volute and the ventilation connection port 132 on the other hand.

[0215] In one embodiment, since the fan 3 and the electronic control assembly 4 are both mounted on the mounting support surface 131 of the mounting support frame 13, the electronic control assembly 4 is arranged on one side of the fan 3. In order to improve the heat dissipation efficiency of the heat dissipation component 43, the heat dissipation component 43 is arranged close to the fan 3.

[0216] Specifically, when the circuit board 42 is powered on and in use, it generates heat, necessitating heat dissipation from the circuit board 42. The heat dissipation opening 4113 can be equipped with a heat dissipation component 43, which can be made of a material with excellent thermal conductivity (such as aluminum or copper). The heat dissipation component 43 is inserted into the heat dissipation opening 4113 and thermally connected to the circuit board 42, effectively dissipating heat from the circuit board 42.

[0217] After the fan 3 is started, the air flow after heat exchange through the heat exchanger 21 will flow toward the fan 3. During the flow process, part of the air flow will flow directly into the inlet of the fan 3, and part of the air flow will flow along the surface of the electrical control box 41 to take away the heat released by the circuit board 42 absorbed by the heat dissipation component 43, thereby improving the heat dissipation efficiency of the heat dissipation component 43.

[0218] In one embodiment, a deflector cover 14 is further provided on the ventilation connection port 132 , and the cross-sectional area of the deflector cover 14 increases along the air outlet direction.

[0219] Specifically, the deflector hood 14 is connected to the ventilation connection port 132 to guide the airflow output from the fan 3. The deflector hood 14 guides the airflow to the air outlet 12 of the outer shell 1 to increase the air outlet coverage area of the air outlet 12. An air outlet channel will be formed through the deflector hood 14.

[0220] In one embodiment, the surface of the electrical control box 41 adjacent to the volute of the fan 3 is a guide surface 410, and the guide surface 410 is arranged at an angle. The heat dissipation duct is formed between the guide surface and the outer wall of the volute of the fan. Along the airflow direction of the heat dissipation duct, the heat dissipation duct has a tapered structure.

[0221] Specifically, to improve the heat dissipation efficiency and operational reliability of circuit board 42, the surface of electrical control box 41 adjacent to the volute of fan 3 is provided with a guide surface 410. This guide surface directs airflow through electrical control box 41. A heat dissipation duct is formed between guide surface 410 and the volute of fan 3. After the fan is started, airflow after heat exchange in the heat exchanger flows toward the fan. Part of the airflow is drawn into the fan, while the remaining airflow passes through the heat dissipation duct and is then drawn back into the fan. This effectively dissipates heat from the circuit board in the electrical control box through the heat dissipation duct.

[0222] In one embodiment, a plurality of heat dissipation fins are provided on the heat dissipation component, and the heat dissipation fins are extended along the rotation axis direction of the fan.

[0223] Specifically, because the heat sink fins are located in the heat dissipation duct, the extension direction of the heat sink fins is the same as the flow direction of the airflow in the heat dissipation duct. On the one hand, the airflow can flow along the heat sink fins to quickly remove heat; on the other hand, the heat sink fins can guide the airflow to ensure smooth flow in the heat dissipation duct.

[0224] In some embodiments, the drainage surface 410 formed on the electrical control box 41 may be formed on the box body 411. The drainage surface 410 is formed on the box body 411 and extends obliquely from the inner wall of the housing 1 in a direction away from the water receiving tray 22. Specifically, a first end of the drainage surface 410 on the box body 411 is adjacent to the sidewall of the housing 1 and the water receiving tray 22, while a second end of the drainage surface 410 on the box body 411 is away from the sidewall of the housing 1 and the water receiving tray 22.

[0225] In some embodiments, the box body 411 is further provided with a threading hole, in which a threading rubber plug 46 is disposed. Specifically, cables extending from the circuit board 42 in the electrical control box 41 to the outside of the electrical control box 41 are led out through the threading rubber plug 46. The threading rubber plug 46 can seal the cable lead-out area to improve waterproof performance.

[0226] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0227] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A duct machine, characterized in that: include: a housing, wherein the housing is provided with an air inlet and an air outlet; a heat exchanger configured to exchange heat with an airflow flowing therethrough to form a heat exchange airflow; a fan configured to introduce airflow through the air inlet and send it out through the air outlet after passing through the heat exchanger; An electric control assembly, the electric control assembly comprising an electric control box and a circuit board, the circuit board being disposed in the electric control box; The heat exchanger, the fan and the electronic control component are arranged in the housing, and the circuit board is electrically connected to the fan; In addition, a mounting support frame is provided in the outer shell, and a ventilation connection port and an electrical connection port are provided on the mounting support frame, and the outlet of the fan is connected with the air outlet through the ventilation connection port; a pre-positioning mounting portion and a first connecting and fixing portion are provided on the electrical control box, and the first connecting and fixing portion is arranged away from the pre-positioning mounting portion, and the pre-positioning mounting portion extends to the outside of the electrical control box, and the pre-positioning mounting portion passes through the electrical connection port and overlaps the mounting support frame, and the first connecting and fixing portion is fixedly connected to the outer shell.

2. The air duct machine according to claim 1, characterized in that: The mounting support frame is provided with an auxiliary connecting and fixing portion, and the electric control box is provided with a second connecting and fixing portion, wherein the second connecting and fixing portion and the pre-positioning mounting portion are arranged on the same side of the electric control box; The second connecting and fixing portion is fixedly connected to the auxiliary connecting and fixing portion.

3. The air duct machine according to claim 2, characterized in that: The auxiliary connection fixing portion includes a plurality of first fixing plates arranged at intervals, with a pre-installed notch formed between two adjacent first fixing plates; The pre-positioning installation portion includes a plurality of pre-positioning plug-ins arranged at intervals, the second connection and fixing portion is a plurality of second fixing plates, and the pre-positioning plug-ins and the second fixing plates are alternately arranged on the electric control box; The pre-positioning plug plate is inserted into the pre-installed notch and overlapped on the installation support frame, and the first fixing plate and the second fixing plate are fixed together by screws.

4. The air duct machine according to claim 1, characterized in that: The mounting support frame is further provided with a first positioning plug-in portion, and the first positioning plug-in portion is located on one side of the electrical connection port; The electric control assembly further includes a covering component, one end of which is inserted into the first positioning plug-in portion, and the other end of which is fixedly connected to the mounting support frame, and the covering component covers the electrical connection port.

5. The air duct machine according to claim 4, characterized in that: The electric control box comprises a box body and a maintenance cover, and the box body is provided with the pre-positioning installation portion and the first connecting and fixing portion; One end of the maintenance cover is provided with a flange structure, and the other end of the maintenance cover is provided with a fixing hole; The covering component is provided with a second positioning plug-in portion, the flanging structure is plugged into the second positioning plug-in portion, and a screw passes through the fixing hole and is fixedly connected to the box body.

6. The air duct machine according to any one of claims 1 to 5, characterized in that: The fan and the electric control box are arranged side by side on the mounting support frame, and a heat dissipation duct is formed between the electric control box and the volute of the fan; The electric control box is provided with a heat dissipation port, a heat dissipation component is arranged in the heat dissipation port, the heat dissipation component is thermally connected to the circuit board, and the heat dissipation component is located in the heat dissipation duct and adjacent to the volute of the fan.

7. The air duct machine according to claim 6, characterized in that: The surface of the electric control box adjacent to the fan volute is a guide surface, which is arranged at an angle. The heat dissipation duct is formed between the guide surface and the outer wall of the fan volute. Along the airflow direction of the heat dissipation duct, the heat dissipation duct has a tapered structure.

8. The air duct machine according to claim 1, characterized in that: The ventilation connection port is further provided with a flow guide cover, and the cross-sectional area of the flow guide cover tends to increase along the air outlet direction.

9. The air duct machine according to claim 1, characterized in that: The mounting support frame is provided with mounting slots on both sides of the ventilation connection port, and the volute of the fan is inserted into the mounting slots.

10. A duct machine, characterized in that: include: a housing, wherein the housing is provided with an air inlet and an air outlet; a heat exchanger configured to exchange heat with an airflow flowing therethrough to form a heat exchange airflow; a fan configured to introduce airflow through the air inlet and send it out through the air outlet after passing through the heat exchanger; An electric control assembly, the electric control assembly comprising an electric control box and a circuit board, the circuit board being disposed in the electric control box; The heat exchanger, the fan and the electronic control component are arranged in the housing, and the circuit board is electrically connected to the fan; In addition, the electric control box is provided with a pre-positioning installation part and a connecting and fixing part, and the pre-positioning installation part and the connecting and fixing part are distributed at different ends of the electric control box. The pre-positioning installation part is configured to be inserted, clamped or overlapped on the outer shell, and the connecting and fixing part is configured to be fixedly connected to the outer shell.

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