Electric control box assembly, ducted air conditioner and heating and ventilation equipment

Abstract

The utility model provides a kind of electric control box assembly, air duct machine and heating and ventilation equipment, electric control box assembly includes electric control box and refrigerant detection component, electric control box includes box body and electric control device, box body has installation part, installation part is used to install box body on the outer surface of air duct machine, electric control device is located in box body, and it is used to be electrically connected with the control device of air duct machine;Refrigerant detection component refrigerant detection component is electrically connected with electric control device, and it is used to detect whether air duct machine occurs refrigerant leakage.It can be seen that the electric control box assembly proposed in the first aspect of the utility model can be fixed on the outer surface of the air duct machine through the mounting portion, which is convenient and reliable to install. And through the refrigerant detection component to monitor whether the air duct machine has flammable refrigerant leakage, the electric control device is electrically connected with the control device of the air duct machine, timely control of the air duct machine is realized according to the monitoring signal of the refrigerant detection component, and the use safety of the air duct machine is improved.

Description

Technical Field

[0001] This utility model relates to the field of HVAC equipment technology, and in particular to an electrical control box assembly, a duct air conditioner, and HVAC equipment. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Currently, with the promotion and application of new combustible refrigerants, ducted air conditioners are prone to refrigerant leaks. Existing ducted air conditioners cannot monitor refrigerant leaks, posing a safety hazard. Utility Model Content

[0004] The purpose of this invention is to at least solve the safety hazard of flammable refrigerant leakage in existing ducted air conditioning systems. This objective is achieved through the following technical solution: The first aspect of this utility model provides an electrical control box assembly, comprising: An electrical control box includes a box body and an electrical control device. The box body has a mounting part for mounting the box body on the outer surface of the duct machine. The electrical control device is located inside the box body and is used for electrical connection with the control device of the duct machine. A refrigerant detection component is electrically connected to the electronic control device and is used to detect whether the duct unit is leaking refrigerant.

[0005] The electrical control box assembly proposed in the first aspect of this utility model can be fixed on the outer surface of the duct unit through the mounting part, which is convenient and reliable for installation. Furthermore, it monitors whether there is a flammable refrigerant leak in the duct unit through the refrigerant detection component. The electrical control device is electrically connected to the control device of the duct unit, so as to realize timely control of the duct unit based on the monitoring signal of the refrigerant detection component, thereby improving the safety of the duct unit.

[0006] In addition, the electrical control box assembly according to this utility model may also have the following additional technical features: In some embodiments of this utility model, the mounting part includes a plurality of fixing holes for a first fastener to pass through in order to connect with the outer surface of the duct machine.

[0007] In some embodiments of this utility model, the box body includes a bottom plate and a surrounding plate. The surrounding plate extends along the edge of the bottom plate and forms an accommodating cavity with an opening between it and the bottom plate. The electronic control device is located in the accommodating cavity and is installed on the bottom plate. The fixing hole is provided on the bottom plate and is located between the electronic control device and the surrounding plate.

[0008] In some embodiments of this utility model, the electrical control box assembly further includes a top cover that closes the opening and, along a direction parallel to the base plate, one side of the top cover is engaged with the surrounding plate, and the other side of the top cover is connected to the surrounding plate by a second fastener.

[0009] In some embodiments of this utility model, the side panel is provided with a snap-fit ​​protrusion on the side away from the receiving cavity, the top cover includes a top plate and a side plate, the side plate extends along the edge of the top plate and is set at an angle to the top plate, the top plate covers the opening, the side plate is connected to the side of the side panel away from the receiving cavity, the side plate is provided with a snap-fit ​​hole on the side facing the side panel, and the snap-fit ​​protrusion is snapped into the snap-fit ​​hole; Alternatively, the enclosure panel has a snap-fit ​​hole on the side opposite to the receiving cavity, the top cover includes a top plate and a side plate, the side plate extends along the edge of the top plate and is set at an angle to the top plate, the top plate covers the opening, the side plate is connected to the side of the enclosure panel opposite to the receiving cavity, and the side plate has a snap-fit ​​protrusion on the side facing the enclosure panel, the snap-fit ​​protrusion is snapped into the snap-fit ​​hole.

[0010] In some embodiments of this utility model, the base plate has a plurality of mounting protrusions on the side facing the receiving cavity, and the electronic control device includes an electronic control board with a plurality of mounting holes, the mounting protrusions being embedded in the mounting holes.

[0011] In some embodiments of this utility model, the enclosure is provided with a plurality of wire passage holes, the receiving cavity is connected to the outside of the electrical control box through the wire passage holes, and the electrical control box assembly further includes a sealing sleeve passing through the wire passage holes, the sealing sleeve being used for the wire harness of the electrical control device to pass through to the outside of the electrical control box.

[0012] In some embodiments of this utility model, the enclosure and / or the base plate are provided with at least one through hole, the through hole being disposed between the electronic control device and the wire passage hole, and used for the wire harness tensioning strap to pass through.

[0013] In some embodiments of this utility model, the enclosure is further provided with a spare hole, the electronic control device is disposed between the spare hole and the wire passage hole, the spare hole is used for the wire harness of the electronic control device to pass through, and the electronic control box assembly further includes a sealing plug, the sealing plug being removably sealed in the spare hole.

[0014] The second aspect of this utility model provides a duct air conditioner, comprising: Ductless air conditioner body; An electrical control box assembly, which is the electrical control box assembly proposed in the first aspect of this utility model, is installed on the outer surface of the duct machine body.

[0015] The second aspect of this utility model proposes an electrical control box assembly for the duct air conditioner, which is easy to install and can monitor for leaks of flammable refrigerant in real time. The electrical control box assembly is fixed to the outer surface of the duct air conditioner through the mounting part, making installation convenient and reliable. Furthermore, it monitors for leaks of flammable refrigerant in the duct air conditioner through a refrigerant detection component. The electrical control device is electrically connected to the control device of the duct air conditioner, enabling timely control of the duct air conditioner based on the monitoring signal from the refrigerant detection component, thereby improving the safety of the duct air conditioner.

[0016] In some embodiments of this utility model, the duct unit body includes a housing, and a recessed space is formed at the bottom of the housing. The shape of the recessed space is adapted to the shape of the electrical control box and is used to accommodate at least part of the electrical control box during packaging.

[0017] The third aspect of this utility model provides a heating, ventilation, and air conditioning (HVAC) device, including a duct unit, wherein the duct unit is the same as the duct unit proposed in the second aspect of this utility model.

[0018] The HVAC equipment proposed in the third aspect of this utility model has a duct unit with high safety in use. It is fixed to the outer surface of the duct unit by an electrical control box assembly, and the refrigerant detection component monitors whether there is a flammable refrigerant leak in the duct unit. The electrical control device is electrically connected to the control device of the duct unit, so as to realize timely control of the duct unit according to the monitoring signal of the refrigerant detection component, thereby improving the safety of the duct unit in use. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the electrical control box installed on a duct machine according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of the structure of the electrical control box according to an embodiment of the present invention is shown. Figure 3 A schematic diagram of the top cover according to an embodiment of the present invention is shown. Figure 4 A schematic diagram of the structure of the box body according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the housing and electronic control device according to an embodiment of the present invention is shown from a first-view perspective. Figure 6A schematic diagram of the housing and electronic control device according to an embodiment of the present invention is shown from a second perspective. Figure 7 The diagram schematically illustrates a cross-sectional view of the electrical control box and duct air conditioner according to an embodiment of the present invention within a packaging box. Figure 8 An exploded view of the electrical control box and the duct air conditioner when packed according to an embodiment of the present invention is shown schematically. The attached figures are labeled as follows: 100. Ductless air conditioner; 111. Outer casing; 112. Recessed space; 200. Electrical control box; 10. Box body; 101. Base plate; 102. Surrounding plate; 103. Receiving cavity; 104. Cable hole; 11. Mounting part; 12. Snap-fit ​​protrusion; 13. Sealing sleeve; 14. Through hole; 15. Spare hole; 16. Assembly hole; 17. Mounting protrusion; 20. Top cover; 21. Top plate; 22. Side plate; 221. Snap-fit ​​hole; 30. Electrical control device; 40. Packaging box; 41. Foam frame. Detailed Implementation

[0020] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0021] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0022] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0023] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0024] like Figures 1 to 8 As shown, the first aspect of this utility model provides an electrical control box 200 assembly, including an electrical control box 200 and a refrigerant detection component. The electrical control box 200 includes a box body 10 and an electrical control device 30. The box body 10 has a mounting part 11 for mounting the box body 10 on the outer surface of the duct air conditioner 100. The electrical control device 30 is disposed inside the box body 10 and is used for electrical connection with the control device of the duct air conditioner 100. The refrigerant detection component is electrically connected to the electrical control device 30 and is used for detecting whether the duct air conditioner 100 has a refrigerant leak.

[0025] As can be seen, the electrical control box 200 component proposed in the first aspect of this utility model can be fixed on the outer surface of the duct unit 100 through the mounting part 11, which is convenient and reliable for installation. Furthermore, the refrigerant detection component monitors whether there is a flammable refrigerant leak in the duct unit 100. The electrical control device 30 is electrically connected to the control device of the duct unit 100, so as to realize timely control of the duct unit 100 based on the monitoring signal of the refrigerant detection component, thereby improving the safety of the duct unit 100 in use.

[0026] For example, the electrical control box 200 can be a rectangular or square box. The box 200 is formed by the snap-fitting of the box body 10 and the top cover 20. Its interior is used to install electrical control devices 30, such as the electrical control board. Wiring holes are provided on the wall of the electrical control box 200 to lead out the wiring harness of the electrical control board. The mounting part 11 can be a structure that facilitates installation, such as bolt holes, screw holes, clips, or adhesive layers. It is located on the outer wall of the electrical control box 200. During installation, the box body 10 can be installed on the outer surface of the ducted air conditioner 100 by screwing, snapping, or adhesive. The refrigerant detection component can be an existing refrigerant detection component, which will not be described in detail here. The refrigerant detection component can be installed inside the ducted air conditioner 100, for example, near the refrigerant pipeline of the ducted air conditioner 100, or inside the box body 10. By opening ventilation holes on the box body 10, the refrigerant detection component can monitor the amount of combustible refrigerant in the external environment of the box body 10. The refrigerant detection unit is electrically connected to the electronic control device 30 and / or the control device of the duct air conditioner 100. When the refrigerant detection unit detects that the amount of combustible refrigerant in the surrounding environment exceeds the standard, the electronic control device 30 or the control device receives the monitoring signal from the refrigerant detection unit, controls the duct air conditioner 100 to stop running, shuts off the refrigerant pipeline, or alarms the user to indicate that there is a refrigerant leak.

[0027] In some embodiments of this utility model, the mounting part 11 includes a plurality of fixing holes for a first fastener to pass through in order to connect with the outer surface of the duct machine 100.

[0028] As can be seen, the housing 10 is fixed to the outer shell 111 of the duct unit 100 by screws and other first fasteners, which is convenient to install and can add refrigerant leakage monitoring and related control functions to the existing non-electrically controlled duct unit 100.

[0029] For example, multiple fixing holes can be provided on the housing 10, such as on the bottom plate 101 or the surrounding plate 102 of the housing 10, and the fixing holes are distributed. The first fastener can be a screw, bolt, or other structure, which passes through the fixing holes and is drilled into the hole on the outer shell 111 of the duct unit 100, so as to fix the housing 10 to the duct unit 100. The electrical control box 200 can be easily added to the existing duct unit 100.

[0030] In some embodiments of this utility model, the box body 10 includes a bottom plate 101 and a surrounding plate 102. The surrounding plate 102 extends along the edge of the bottom plate 101 and forms an accommodating cavity 103 with an opening between it and the bottom plate 101. The electronic control device 30 is located in the accommodating cavity 103 and is installed on the bottom plate 101. The fixing hole is provided on the bottom plate 101 and is located between the electronic control device 30 and the surrounding plate 102.

[0031] As can be seen, the PCB board and other electrical control devices 30 are accommodated and protected by the cavity 103 formed inside the box 10. The fixing holes are set between the electrical control device 30 and the surrounding plate 102, so that after the electrical control device 30 is installed, the box 10 can be fixed to the outer surface of the air duct machine 100 through the exposed fixing holes, which facilitates the installation of the molded electrical control box 200 assembly.

[0032] For example, the cross-section of the box body 10 can be square or rectangular. The base plate 101 and the surrounding plate 102 can be integrally formed by injection molding or connected by welding metal plates. Fixing holes can be provided at the corners of the base plate 101, and the electronic control device 30 can be fixedly installed through the limiting protrusions or mounting posts on the base plate 101 or the surrounding plate 102.

[0033] In some embodiments of this utility model, the electrical control box 200 assembly also includes a top cover 20, which closes the opening and, along a direction parallel to the base plate 101, one side of the top cover 20 is snapped into the surrounding plate 102, and the other side of the top cover 20 is connected to the surrounding plate 102 by a second fastener.

[0034] As can be seen, by having one side of the top cover 20 snap-fitted to the surrounding plate 102, and the other side secured with screws or other second fasteners passing through the assembly hole 16 to the surrounding plate 102, the top cover 20 can be easily installed, making it more convenient to open the top cover during assembly and subsequent maintenance of the electrical control box 200 assembly.

[0035] For example, a protrusion can be provided on one side of the top cover 20 and a groove can be provided on one side of the surrounding plate 102, so that the two can be engaged. Alternatively, a groove can be provided on one side of the top cover 20 and a protrusion can be provided on one side of the surrounding plate 102, which can also achieve the engagement. The groove can also be replaced with a through hole. A through hole is provided on the other side of the top cover 20 and the surrounding plate 102, so that the other side of the top cover 20 and the surrounding plate 102 can be fastened by passing screws or other second fasteners through the assembly hole 16.

[0036] In some embodiments of this utility model, the side panel 102 is provided with a snap-fit ​​protrusion 12 on the side away from the receiving cavity 103, the top cover 20 includes a top plate 21 and a side plate 22, the side plate 22 extends along the edge of the top plate 21 and is set at an angle to the top plate 21, the top plate 21 covers the opening, the side plate 22 is connected to the side of the side panel 102 away from the receiving cavity 103, the side plate 22 is provided with a snap-fit ​​hole 221 on the side facing the side panel 102, and the snap-fit ​​protrusion 12 is snapped into the snap-fit ​​hole 221; Alternatively, the side panel 102 away from the receiving cavity 103 is provided with a snap-fit ​​hole 221, the top cover 20 includes a top plate 21 and a side plate 22, the side plate 22 extends along the edge of the top plate 21 and is set at an angle to the top plate 21, the top plate 21 covers the opening, the side plate 22 is connected to the side of the side panel 102 away from the receiving cavity 103, and the side plate 22 facing the side panel 102 is provided with a snap-fit ​​protrusion 12, which is snapped into the snap-fit ​​hole 221.

[0037] As can be seen, by setting the snap-fit ​​protrusion 12 and the snap-fit ​​hole 221 to snap-fit ​​together, the side panel 102 and the top cover 20 are snap-fit ​​connected on one side, which improves the installation convenience of the top cover 20 and the box body 10.

[0038] For example, the snap-fit ​​hole 221 can be a through hole, and the snap-fit ​​protrusion 12 can be formed by stamping the surrounding plate 102 into a window similar to a louver. The part of the window that is covered forms the snap-fit ​​protrusion 12. The louver can also take into account the heat dissipation function of the electronic control device 30 inside the box body 10. Specifically, at least two snap-fit ​​protrusions 12 can be provided on the outer side of the surrounding plate 102 in a direction parallel to the bottom plate 101 to improve the stability of the top cover 20 in the direction parallel to the bottom plate 101 after it is snapped into the surrounding plate 102.

[0039] In some embodiments of this utility model, the bottom plate 101 has a plurality of mounting protrusions 17 on the side facing the receiving cavity 103, and the electronic control device 30 includes an electronic control board with a plurality of mounting holes, and the mounting protrusions 17 are embedded in the mounting holes.

[0040] As can be seen, multiple circular convex structure mounting protrusions 17 are provided on the inner side of the base plate 101, so that the mounting holes on the control board can be embedded and installed with the mounting protrusions 17, which facilitates the installation, positioning and fixing of the control board.

[0041] For example, the mounting protrusion 17 can be a circular protrusion or a cylindrical structure that mates with the circular mounting hole on the control board. The setting position of the mounting protrusion 17 needs to be adapted to the position distribution of the mounting holes on commonly used control boards.

[0042] In some embodiments of this utility model, the enclosure 102 is provided with a plurality of wire holes 104, the receiving cavity 103 is connected to the outside of the electrical control box 200 through the wire holes 104, and the electrical control box 200 assembly also includes a sealing sleeve 13 passing through the wire holes 104, the sealing sleeve 13 is used to allow the wiring harness of the power control device 30 to pass through to the outside of the electrical control box 200.

[0043] As can be seen, by providing a wire passage hole 104 on the enclosure 102, the wiring harness of the electronic control device 30 can be easily passed through. Furthermore, by providing an elastic sealing sleeve 13 at the wire passage hole 104, the wiring harness is in close contact with the elastic sealing sleeve 13, preventing water and dust from entering the wire passage hole 104 and improving the internal reliability of the electronic control box 200 assembly. The elastic sealing sleeve 13 can be embedded in the wire passage hole 104 and has a through hole for easy wire threading.

[0044] For example, the wire passage hole 104 can be circular and multiple wire passage holes 104 can be provided along the enclosure 102. Multiple wire passage holes 104 can be arranged side by side on one side of the enclosure 102 corresponding to the wire exit direction of the control board. An elastic sealing sleeve 13 is provided inside the wire passage hole 104. Both axial ends of the sealing sleeve 13 extend beyond the wire passage hole 104 to protect the wire harness from excessive bending or damage by the enclosure 102.

[0045] In some embodiments of this utility model, at least one through hole 14 is provided on the enclosure 102 and / or the bottom plate 101. The through hole 14 is disposed between the electronic control device 30 and the wire passage hole 104 and is used for the wire harness tensioning strap to pass through.

[0046] As can be seen, by providing through holes 14 on the enclosure 102 and / or the base plate 101, the wire harness of the electronic control device 30 can be tightened by the tightening strap, which improves the reliability of the electronic control device 30 and the convenience of wire threading. After the tightening strap passes through the through hole 14, it forms a ring structure to tighten multiple wire harnesses.

[0047] For example, the through hole 14 can be set at the position of the wiring harness of the electrical control device 30 on the base plate 101. The tightening strap can be an existing plastic strap with a clip. One end of the tightening strap can be inserted into the through hole 14 for fixation, or the tightening strap can pass through two through holes 14 for fixation.

[0048] In some embodiments of this utility model, the enclosure 102 is also provided with a spare hole 15, and the electrical control device 30 is disposed between the spare hole 15 and the wire passage hole 104. The spare hole 15 is used for the wire harness of the electrical control device 30 to pass through. The electrical control box 200 assembly also includes a sealing plug, which is removably sealed in the spare hole 15.

[0049] As can be seen, by providing spare holes 15 on the enclosure 102, some electrical control devices 30 with a large number of wire harnesses can be adapted to be installed in the box 10, facilitating the exit of their wire harnesses. Furthermore, the wire harnesses of the electrical control devices 30 can exit from different positions, allowing the electrical control box 200 assembly to be installed in more locations. In addition, sealing the spare holes 15 with sealing plugs prevents water and dust from entering when the spare holes are not in use, improving the internal reliability of the electrical control box 200 assembly.

[0050] For example, the spare holes 15 can be circular, and multiple spare holes are provided along the surrounding plate 102. The positions of the spare holes 15 should preferably be staggered from the positions of the through holes 14, for example, in the direction parallel to the base plate 101, and respectively provided on both sides of the surrounding plate 102, so as to improve the installation position adaptability of the electrical control box 200 assembly. The sealing plug can be a commonly used rubber sealing plug, which is interference-fitted into the spare holes 15 to improve the sealing performance.

[0051] The second aspect of this utility model provides a duct air conditioner 100, including a duct air conditioner 100 body and an electrical control box 200 assembly. The electrical control box 200 assembly is the same as the electrical control box 200 assembly proposed in the first aspect of this utility model, and the electrical control box 200 assembly is installed on the outer surface of the duct air conditioner 100 body.

[0052] As can be seen, the duct air conditioner 100 proposed in the second aspect of this utility model has an electrical control box 200 assembly that is easy to install and can monitor whether flammable refrigerant is leaking in real time. The electrical control box 200 assembly is fixed to the outer surface of the duct air conditioner 100 by the mounting part 11, which is convenient and reliable to install. Furthermore, the refrigerant detection component monitors whether there is a flammable refrigerant leak in the duct air conditioner 100. The electrical control device 30 is electrically connected to the control device of the duct air conditioner 100, so as to realize timely control of the duct air conditioner 100 according to the monitoring signal of the refrigerant detection component, thereby improving the safety of the use of the duct air conditioner 100.

[0053] For example, the ducted air conditioner 100 is installed indoors. The airflow is driven by a fan to enter the casing from the return air inlet, then flows to the heat exchanger, and then flows out through the air outlet to cool or heat the environment. The electrical control box 200 assembly can be connected to the casing of the ducted air conditioner 100 body by screwing in screws, and the refrigerant detection component can be installed at the refrigerant pipeline inside the ducted air conditioner 100 body.

[0054] In some embodiments of this utility model, the duct unit 100 body includes a housing 111, and a recessed space 112 is formed at the bottom of the housing 111. The shape of the recessed space 112 is adapted to the shape of the electrical control box 200 and is used to accommodate at least part of the electrical control box 200 when it is packed.

[0055] As can be seen, by providing a recessed space 112 at the bottom of the outer shell 111 of the duct unit 100, the electrical control box 200 can be embedded in the recessed space 112 during packing, saving the packing space of the packaging box 40 and eliminating the need to set up an additional position for the electrical control box 200 in the packing space.

[0056] For example, the housing 111 can be formed into a recessed space 112 by sheet metal bending or stamping. During packing, a foam frame 41 is placed around the recessed space 112. Part of the foam frame 41 extends into the recessed space 112 to separate the housing 111 and the electrical control box 200. The electrical control box 200 is surrounded and protected by the foam frame 41, so that the electrical control box 200 does not protrude after packing and is protected by the foam structure.

[0057] The third aspect of this utility model provides a heating, ventilation and air conditioning (HVAC) device, including a duct unit 100, which is the same as the duct unit 100 provided in the second aspect of this utility model.

[0058] As can be seen, the HVAC equipment proposed in the third aspect of this utility model has a duct unit 100 with high safety in use. The duct unit 100 is fixed to the outer surface of the duct unit 100 by the electrical control box 200 assembly, and the refrigerant detection component monitors whether there is a flammable refrigerant leak in the duct unit 100. The electrical control device 30 is electrically connected to the control device of the duct unit 100, so as to realize timely control of the duct unit 100 according to the monitoring signal of the refrigerant detection component, thereby improving the safety of the duct unit 100 in use.

[0059] For example, the HVAC system includes an outdoor unit, and the ducted unit 100 serves as the indoor unit. Refrigerant forms a cooling or heating circuit between the outdoor unit and the ducted unit 100. The electrical control box 200 assembly is located at the ducted unit 100 and can communicate with the controller of the HVAC system.

[0060] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An electrical control box assembly, characterized in that, include: An electrical control box includes a box body and an electrical control device. The box body has a mounting part for mounting the box body on the outer surface of the duct machine. The electrical control device is located inside the box body and is used for electrical connection with the control device of the duct machine. A refrigerant detection component is electrically connected to the electronic control device and is used to detect whether the duct unit is leaking refrigerant.

2. The electrical control box assembly according to claim 1, characterized in that, The mounting part includes a plurality of fixing holes for a first fastener to pass through in order to connect to the outer surface of the duct unit.

3. The electrical control box assembly according to claim 2, characterized in that, The box body includes a bottom plate and a surrounding plate. The surrounding plate extends along the edge of the bottom plate and forms an open receiving cavity with the bottom plate. The electronic control device is located in the receiving cavity and is installed on the bottom plate. The fixing hole is provided on the bottom plate and is located between the electronic control device and the surrounding plate.

4. The electrical control box assembly according to claim 3, characterized in that, The electrical control box assembly also includes a top cover that closes the opening and, along a direction parallel to the base plate, one side of the top cover is engaged with the surrounding plate, and the other side of the top cover is connected to the surrounding plate by a second fastener.

5. The electrical control box assembly according to claim 4, characterized in that, The enclosure panel has a snap-fit ​​protrusion on the side opposite to the receiving cavity. The top cover includes a top plate and a side plate. The side plate extends along the edge of the top plate and is set at an angle to the top plate. The top plate covers the opening. The side plate is connected to the side of the enclosure panel opposite to the receiving cavity. The side plate has a snap-fit ​​hole on the side facing the enclosure panel. The snap-fit ​​protrusion is snapped into the snap-fit ​​hole. Alternatively, the enclosure panel has a snap-fit ​​hole on the side opposite to the receiving cavity, the top cover includes a top plate and a side plate, the side plate extends along the edge of the top plate and is set at an angle to the top plate, the top plate covers the opening, the side plate is connected to the side of the enclosure panel opposite to the receiving cavity, and the side plate has a snap-fit ​​protrusion on the side facing the enclosure panel, the snap-fit ​​protrusion is snapped into the snap-fit ​​hole.

6. The electrical control box assembly according to claim 3, characterized in that, The base plate has multiple mounting protrusions on the side facing the receiving cavity, and the electronic control device includes an electronic control board with multiple mounting holes, in which the mounting protrusions are embedded.

7. The electrical control box assembly according to claim 3, characterized in that, The enclosure is provided with multiple wire passage holes. The receiving cavity communicates with the outside of the electrical control box through the wire passage holes. The electrical control box assembly also includes a sealing sleeve that passes through the wire passage holes. The sealing sleeve is used to allow the wiring harness of the electrical control device to pass through to the outside of the electrical control box.

8. The electrical control box assembly according to claim 7, characterized in that, At least one through hole is provided on the enclosure and / or the base plate. The through hole is located between the electronic control device and the wire passage hole and is used for the wire harness tensioning strap to pass through.

9. The electrical control box assembly according to claim 7, characterized in that, The enclosure is also provided with a spare hole, and the electrical control device is disposed between the spare hole and the wire passage hole. The spare hole is used for the wire harness of the electrical control device to pass through. The electrical control box assembly also includes a sealing plug, which is removably sealed in the spare hole.

10. A ducted air conditioner, characterized in that, include: Ductless air conditioner body; An electrical control box assembly, wherein the electrical control box assembly is the electrical control box assembly according to any one of claims 1 to 9, and the electrical control box assembly is installed on the outer surface of the duct machine body.

11. The duct air conditioner according to claim 10, characterized in that, The duct unit body includes an outer shell, and a recessed space is formed at the bottom of the outer shell. The shape of the recessed space is adapted to the shape of the electrical control box and is used to accommodate at least part of the electrical control box during packaging.

12. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, Includes a ducted air handling unit, wherein the ducted air handling unit is the ducted air handling unit according to claim 10 or 11.

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