Roof type air conditioner

Abstract

The utility model relates to a roof type air conditioner, which belongs to the technical field of air conditioners, and comprises a box body, an outdoor side heat exchange device, an indoor side heat exchange device, an electric control box, a main control board and an air duct assembly, an outdoor cavity provided with an outdoor side heat exchange device and an indoor cavity provided with an indoor side heat exchange device are formed in the box body. The electric control box is arranged in the indoor cavity and forms a containing cavity with the box body, a ventilation panel is arranged on the side, matched with the electric control box, of the box body, and the main control board and the air duct assembly are arranged in the containing cavity; the sealing plate divides the containing cavity between the ventilation panel and the main control panel to form an air inlet channel and a heat dissipation channel, an air outlet communicated with the heat dissipation channel is formed in the box body, and the partition plate divides the air inlet channel into a first air channel and a second air channel between the sealing plate and the ventilation panel. The sealing plate and the ventilation panel are provided with ventilation windows and heat dissipation air inlets corresponding to the main control board component concentration area, the area side, the first air duct and the second air duct.

Description

Technical Field

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

[0002] Air conditioning, or air conditioner, refers to equipment that manually regulates and controls the temperature, humidity, flow rate, and other parameters of the ambient air within a building or structure. Rooftop air conditioners are large or medium-sized, self-contained, air-cooled units typically installed on rooftops. The cooling, heating, humidification, air supply, air purification, and electrical controls are integrated into a horizontal housing. These units primarily consist of a compression and condensing section facing the outdoors, and an evaporation and filtration section and air supply section facing the indoors.

[0003] The main control board of the rooftop air conditioner's electrical control box combines the indoor main control board and the outdoor main control board, which means that there are a large number of high-power components on it. During operation, these high-power components generate a lot of heat, making the temperature inside the electrical control box high. The components have difficulty in dissipating heat, and excessive temperature rise will seriously affect the operation of the air conditioner and the reliability and life of the electrical control box components.

[0004] Currently, the electrical control box of existing rooftop units is sealed and placed in a cabinet indoors. Air from the room passes through the main control board and radiator, removing heat from the radiator and components, thereby cooling the components. The air temperature rises after passing through the radiator and components, and is finally blown out through the air outlet. This main control board cooling solution reduces the overall performance of the unit. Alternatively, a cooling inlet is provided in the air conditioner cabinet, connecting the electrical control box directly to the outside world. This achieves heat dissipation through direct heat exchange with the outside air. However, this structure has limited cooling effectiveness and low reliability. Utility Model Content

[0005] The utility model solves one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the present application aims to provide a roof-type air conditioner, in which a heat dissipation air inlet and outlet connected to the outside are set at a position on the cabinet corresponding to the position of the electric control box, and the air outside the cabinet is introduced into the electric control box through the negative pressure in the electric control box for heat exchange, so that the main control board can effectively dissipate heat. An air duct assembly is set in the accommodating cavity formed by the electric control box and the cabinet, and the air duct assembly is provided with a sealing plate to separate the accommodating cavity of the electric control box into a cavity for heat exchange of the main control board and a cavity for guiding the air to enter the flow direction. A partition is set between the sealing plate and the ventilation panel to divide the cavity for guiding the air to enter the flow direction into two channels for directional air supply to specific areas, thereby realizing zoned air supply in the accommodating cavity through the air duct assembly, and delivering air flow to the concentrated area of ​​​​the components on the main control board that generate more heat for heat dissipation, further improving the heat dissipation effect in the electric control box.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a box body, which has an outdoor cavity and an indoor cavity formed therein;

[0008] an outdoor heat exchange device, disposed in the outdoor cavity;

[0009] An indoor heat exchange device is arranged in the indoor cavity;

[0010] An electric control box is disposed in the indoor cavity and cooperates with the side panels of the box to form a receiving cavity. One side of the box is a ventilation panel, and the ventilation panel is provided with at least two heat dissipation air inlets. The receiving cavity is connected to the outside of the box through the heat dissipation air inlets.

[0011] a main control panel, disposed in the accommodating cavity and located on a side opposite to the ventilation panel;

[0012] An air duct assembly is provided in the accommodating cavity and is used to cooperate with the ventilation panel and the electric control box to dissipate heat from the main control board, and includes:

[0013] A sealing plate is provided between the main control board and the ventilation panel, and is used to isolate the main control board from the heat dissipation air inlet and separate the accommodating cavity into two independent cavities; at least two ventilation windows are respectively provided on the sealing plate corresponding to locations where components on the main control board are concentrated;

[0014] A partition is provided between the sealing plate and the ventilation panel, and each side of the partition has at least one heat dissipation air inlet, and each side of the partition has at least one ventilation window;

[0015] an air outlet, the air outlet being provided in the box body and communicating with the accommodating cavity;

[0016] The air outside the box enters from the heat dissipation air inlets located on both sides of the partition, passes through the sealing plate and the ventilation panel, and exchanges heat with the main control board through the ventilation windows located on both sides of the partition, and is discharged from the box from the air outlet.

[0017] In the technical solution, a heat dissipation inlet and outlet connected to the outside are set at the position on the cabinet corresponding to the electrical control box. The negative pressure inside the electrical control box draws air outside the cabinet into the electrical control box for heat exchange, allowing the main control board to effectively dissipate heat. An air duct assembly is set in the accommodating cavity formed by the electrical control box and the cabinet. The air duct assembly is provided with a sealing plate to separate the accommodating cavity of the electrical control box into a cavity for heat exchange with the main control board and a cavity for guiding air flow. A partition is set between the sealing plate and the ventilation panel to divide the cavity for guiding air flow into two channels for directional air supply to specific areas. Thus, the air duct assembly realizes zoned air supply in the accommodating cavity and delivers air flow to the concentrated area of ​​​​the main control board where heat is generated more, for heat dissipation, further improving the heat dissipation effect in the electrical control box.

[0018] In some embodiments of the present application, a guide plate is provided at the edge of the ventilation window on the side of the sealing plate facing the main control board, and the guide plate is used to constrain and concentrate the airflow entering through the ventilation window.

[0019] In the technical solution, by arranging a guide plate at the ventilation window on the sealing plate, the guide plate can generate guiding constraints on the air passing through the ventilation window, so that the air is concentrated and sent to the main heat source components of the main control board, and the air passing through the ventilation window first contacts the main heat source components of the main control board to take away the heat, thereby improving the heat dissipation effect.

[0020] In some embodiments of the present application, the length of the guide plate in the spacing direction between the sealing plate and the main control board is greater than or equal to 10 mm.

[0021] In the technical solution, the guide plate that constrains the concentrated air is set to a length of not less than 10 mm in the straight-line distance between the sealing plate and the main control board, so that the ventilation window and the guide plate form a constrained channel. The length of not less than 10 mm reduces the distance between the channel and the main control board components, ensuring that the air passing through the ventilation window has priority contact with the main control board components.

[0022] In some embodiments of the present application, the main control board is arranged vertically and the main heat source component area is arranged on the upper part of the main control board, and the heat dissipation air inlet is opened at the lower part of the ventilation panel;

[0023] The air outside the box enters from the heat dissipation air inlet, flows upward between the ventilation panel and the sealing plate, enters between the sealing plate and the main control board through the ventilation window, exchanges heat with the main control board, and is discharged from the box from the air outlet.

[0024] In the technical solution, the main control board is positioned vertically, with the components concentrated near the top. Heat generated by the components is concentrated and dissipated from the upper portion. The heat inlet on the heat dissipation panel, which connects to the outside air, is positioned at the bottom, offset from the ventilation windows on the sealing plate and the main control board components. This prevents rainwater from entering the electrical control box and reduces the ingress of dust. The dust- and rain-proof design of the electrical control box reduces the impact of the heat dissipation channel connecting to the outside on the safety of the control box, improving heat dissipation while still ensuring the reliability of the rooftop air conditioner.

[0025] In some embodiments of the present application, the lower portion of the sealing plate corresponding to the heat dissipation air inlet is set as an inclined surface, and the lower edge of the inclined surface contacts the lower edge of the heat dissipation air inlet.

[0026] In the technical solution, the lower part of the sealing plate is set as an inclined surface, and the lowest point of the inclined surface is flush with the lower edge of the heat dissipation inlet connected to the outside, so that rainwater, dust, etc. entering between the sealing plate and the ventilation panel can flow along the inclined surface from the lower edge of the ventilation and heat dissipation port to outside the box.

[0027] In some embodiments of the present application, the main control board is arranged vertically, and the main control board is located in the upper area of ​​the accommodating cavity near the air outlet. The main heat source component area is set, and at least two first ventilation windows are set in the upper part of the sealing plate corresponding to the main heat source component area. The second ventilation window is set in the upper part of the sealing plate away from the main heat source component area, and the partition separates the first ventilation window and the second ventilation window.

[0028] In the technical solution, at least two first ventilation windows are provided on the sealing plate to target the main heat-generating areas of the components on the main control board, such as the areas where the indoor and outdoor main control board assemblies are located, where loads and radiators with high heat generation are located. The first ventilation windows and the partitions work together to form a path of air specifically for dissipating heat in the higher-temperature areas, thereby lowering the temperature of the components with high heat generation and reducing the impact of these components on surrounding devices. A second ventilation window is provided on a side away from the main heat source component area, and the second ventilation window is away from the air outlet. This allows a path of air to be specifically transported from the side of the main heat source component area, passing through the main heat source components to the air outlet, further removing heat and improving the heat dissipation effect.

[0029] In some embodiments of the present application, the heat dissipation air inlet includes:

[0030] at least two first air inlets, disposed on one side of the partition on the ventilation panel and corresponding to the first ventilation windows;

[0031] The second air inlet is arranged on the other side of the partition on the ventilation panel and corresponds to the second ventilation window.

[0032] In the technical solution, a first air inlet and a second air inlet are provided on the ventilation panel, which are separated by a partition and cooperate with the sealing plate and the ventilation window thereon to form two independent air flows, specifically and centrally dissipating the heat from different paths to the main control board inside the electrical control box.

[0033] In some embodiments of the present application, the area of ​​the heat dissipation air inlet is not less than 8400mm 2 .

[0034] In the technical solution, the air inlet area of ​​the heat dissipation air inlet is set to at least 8400mm 2 The size of the fan is to ensure that there is enough air flow into the electric control box, thereby ensuring the heat dissipation effect inside the electric control box.

[0035] In some embodiments of the present application, the heat dissipation air inlet is a louver air inlet, and the single opening width of the louver air inlet is less than or equal to 3 mm.

[0036] In the technical solution, the cooling air inlet is shaped like a louver, specifically a fixed, angled louver, a slit-type grille. This effectively ensures the airflow into the cooling air inlet. The angled opening guides the incoming air, allowing it to flow more quickly upwards into the main control board for heat exchange after entering the electronic control box's cavity. Furthermore, the slanted blades of the fixed angled louver provide effective dust and rain protection for the electronic control box, reducing the chance of rain and dust entering. Limiting the width of each louver to less than 3 mm prevents most insects from entering the electronic control box through the cooling air inlet, further improving its safety.

[0037] In addition, the present application also provides a rooftop air conditioner, comprising:

[0038] The box body has an outdoor cavity and an indoor cavity formed therein;

[0039] an outdoor heat exchange device, disposed in the outdoor cavity;

[0040] An indoor heat exchange device is arranged in the indoor cavity;

[0041] An electric control box is disposed in the indoor cavity and cooperates with the side panels of the box to form a receiving cavity. One side of the box is a ventilation panel, and the ventilation panel is provided with at least two heat dissipation air inlets. The receiving cavity is connected to the outside of the box through the heat dissipation air inlets.

[0042] a main control panel, disposed in the accommodating cavity and located on a side opposite to the ventilation panel;

[0043] An air duct assembly is provided between the main control board and the ventilation panel to separate the accommodating cavity, and forms a heat dissipation channel on a side close to the main control board and an air intake channel on a side close to the ventilation panel;

[0044] The air inlet channel includes a first air duct and a second air duct that are independent of each other, the first air duct is connected to at least one of the heat dissipation air inlet and the heat dissipation channel, and the two ends of the second air duct are respectively connected to at least one of the heat dissipation air inlet and the heat dissipation channel;

[0045] an air outlet, the air outlet being provided in the box body and communicating with the accommodating cavity;

[0046] The air outside the box enters from the heat dissipation air inlet, passes through the first air duct and the second air duct respectively, reaches the heat dissipation channel and exchanges heat with the main control board, and is discharged from the box from the air outlet.

[0047] In the technical solution, a heat dissipation inlet and outlet connected to the outside are provided on the housing at a location corresponding to the electrical control box. The negative pressure within the electrical control box draws air outside the housing into the electrical control box for heat exchange, effectively dissipating heat from the main control board. An air duct assembly is provided within the housing cavity formed by the electrical control box and the housing. The air duct assembly separates the housing cavity into a heat dissipation channel for heat exchange with the main control board and an air inlet channel for directing air flow. The air inlet channel is divided into a first air duct and a second air duct for directional air supply to specific areas. This achieves zoned air supply within the housing cavity through the air duct assembly, and delivers airflow to concentrated areas of the main control board where heat is generated, further enhancing the heat dissipation effect within the electrical control box.

[0048] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 1 is a schematic diagram of the overall structure of a rooftop air conditioner according to an embodiment of the present application;

[0050] Figure 2 is a schematic diagram of the internal structure of a rooftop air conditioner according to an embodiment of the present application;

[0051] Figure 3 1 is a schematic structural diagram of an electric control device for a rooftop air conditioner according to an embodiment of the present application;

[0052] Figure 4 Schematic diagram of the internal structure of the electric control box of the rooftop air conditioner according to the embodiment of the present application;

[0053] Figure 5Schematic diagram of the main control panel structure of a rooftop air conditioner according to an embodiment of the present application;

[0054] Figure 6 This is a schematic diagram of the assembled three-dimensional structure of the ventilation panel and the sealing plate of the rooftop air conditioner according to the embodiment of the present application;

[0055] Figure 7 This is a schematic diagram of the side structure of the ventilation panel and sealing plate assembly of a rooftop air conditioner according to an embodiment of the present application;

[0056] Figure 8 This is a schematic diagram of the inner side structure of the ventilation panel and sealing plate assembly of a rooftop air conditioner according to an embodiment of the present application;

[0057] Figure 9 is a longitudinal cross-sectional view of an assembly of a ventilation panel and a sealing plate of a rooftop air conditioner according to an embodiment of the present application;

[0058] Figure 10 It is a transverse cross-sectional view of the assembly of the ventilation panel and the sealing plate of the roof-type air conditioner according to the embodiment of the present application.

[0059] In the above figures: 100, box body; 110, outdoor cavity; 120, indoor cavity; 130, ventilation panel; 131, heat dissipation air inlet; 1311, first air inlet; 1312, second air inlet; 140, air outlet; 200, outdoor heat exchange device; 300, indoor heat exchange device; 400, electrical control box; 500, main control board; 510, main heat source component area; 600, air duct assembly; 610, sealing plate; 611 ventilation window; 6111, first ventilation window; 6112, second ventilation window; 612, guide plate; 620, partition; 700, accommodating cavity; 710, air inlet channel; 711, first air duct; 712, second air duct. DETAILED DESCRIPTION

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0061] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can mean fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0062] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0063] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0064] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may also be beneficially combined in other embodiments.

[0065] In this application, the rooftop air conditioner is an all-in-one air conditioner installed outdoors, integrating indoor and outdoor heat exchangers, as well as electronic control system components, within a horizontal housing. The housing has dedicated indoor and outdoor chambers for mounting the indoor and outdoor heat exchangers, respectively. The electronic control system components are installed in a portion of the indoor chamber adjacent to the indoor heat exchanger and adjacent to the outdoor chamber. The outdoor heat exchanger includes a compressor, an outdoor heat exchanger, and an outdoor fan. The indoor heat exchanger includes an indoor heat exchanger and an indoor fan. The horizontal housing is provided with corresponding air inlets and outlets, and is connected to the indoor environment via piping. The outdoor and indoor heat exchangers serve as the evaporator and condenser, respectively, to achieve heat exchange for the air conditioning function. The indoor fan outputs the air, which has undergone heat exchange in the indoor heat exchanger, to the indoor room, achieving either cooling or heating.

[0066] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0067] As attached Figures 1 to 2 As shown, in an exemplary embodiment of the rooftop air conditioner of the present invention, the rooftop air conditioner comprises a housing 100, the interior of which is formed by panels into relatively independent outdoor chambers 110 and indoor chambers 120. Typically, the indoor chamber 120 and the outdoor chamber 110 are arranged horizontally side by side, and the housing 100 is installed horizontally on a roof or mounting surface with a larger horizontal cross-section. In some other embodiments, the indoor chamber 120 and the outdoor chamber 110 can also be arranged vertically, with the housing 100 installed vertically with a smaller horizontal cross-section.

[0068] In some embodiments, as Figure 2 As shown, the rooftop air conditioner includes an indoor heat exchanger 300 and an outdoor heat exchanger 200. The outdoor heat exchanger 200 includes an outdoor heat exchanger and an outdoor fan. The outdoor heat exchanger 200 is installed in the outdoor chamber 110. The outdoor air inlet and outdoor air outlet 140 are correspondingly provided on the side of the cabinet 100 where the outdoor chamber 110 is located. The indoor heat exchanger 300 includes an indoor heat exchanger and an indoor fan. The indoor heat exchanger 300 is installed in the indoor chamber 120. The indoor air inlet and indoor air outlet 140 are correspondingly provided on the side of the cabinet 100 where the indoor chamber 120 is located.

[0069] In some embodiments, as Figures 2 to 4As shown, the rooftop air conditioner also includes an electrical control box 400. The electrical control box 400 is a cylindrical, open box body, installed within the indoor cavity 120 of the housing 100. The opening of the electrical control box 400 faces one side of the housing 100. The bottom of the box faces the center of the indoor cavity 120 and is adjacent to the indoor heat exchange device 300. The side of the box body is adjacent to one side of the outdoor cavity 110. The electrical control box 400 and the housing 100 form a receiving chamber 700 for accommodating the components of the rooftop air conditioner's control system.

[0070] In some embodiments, as Figures 5 to 10 As shown, the rooftop air conditioner also includes a main control board 500. The main control board 500 is arranged in the accommodating cavity 700. The main control board 500 includes various components such as a radiator, a load, and a control chip. The components are fixed by the bottom surface of the box body of the electric control box 400. The main control board 500 is located on the side of the accommodating cavity 700 close to the indoor heat exchange device, and the box body 100 on the opening side of the electric control box 400 is opposite to the main control board 500. In this embodiment, the side of the box body 100 opposite to the main control board 500 is set as the ventilation panel 130 of the accommodating cavity 700, so as to improve the utilization rate of the components of the box body 100 and achieve the most optimized spatial structure design. In addition, the ventilation panel 130 can be set as a door panel that can be removed and opened separately, so that it is convenient to open it separately to perform maintenance work on the air conditioner electronic control system. At least two heat dissipation air inlets 131 are provided on the ventilation panel 130 , through which outdoor air can enter the accommodating cavity 700 and perform heat exchange with components on the main control board 500 .

[0071] In some embodiments, as Figures 3 and 4 As shown, the rooftop air conditioner further includes an air duct assembly 600. The air duct assembly 600 is disposed in the accommodating cavity 700 and cooperates with the ventilation panel 130 and the electric control box 400 to form a specific heat dissipation structure in the accommodating cavity 700, so that the main control board 500 can dissipate heat efficiently.

[0072] In some embodiments, the air duct assembly 600 includes a sealing plate 610, which is disposed between the main control board 500 and the ventilation panel 130. The sealing plate 610 is in the shape of a square disk. Support members are welded to the four sides of the ventilation panel 130 corresponding to the sealing plate 610. The sealing plate 610 is detachably mounted on the ventilation panel 130 via the support members. The sealing plate 610 separates the heat dissipation air inlet 131 from the main control board 500 between the ventilation panel 130 and the main control board 500. The sealing plate 610 cooperates with the ventilation panel 130 to form an air inlet cavity therebetween. The sealing plate 610 cooperates with the electrical control box 400 to form a heat dissipation cavity therebetween for heat exchange between air and the main control board 500. At least two ventilation windows 611 are provided on the sealing plate 610, corresponding to locations on the main control board 500 where components are concentrated. A sealing plate 610 is installed between the ventilation panel 130 and the main control board 500 to protect the main control board 500. The air intake cavity is connected to the heat dissipation cavity through the ventilation window 611, enabling heat exchange between air and the main control board 500. Furthermore, the ventilation window 611 is located at a location corresponding to a concentration of components, so that the incoming air preferentially exchanges heat with the component-concentrated area.

[0073] In some embodiments, the air duct assembly 600 further includes a divider 620. The divider 620 is disposed between the sealing plate 610 and the ventilation panel 130, dividing the air intake cavity between the sealing plate 610 and the ventilation panel into two cavities. Each side of the divider 620 has at least one heat dissipation air inlet 131, and each side of the divider 620 has at least one ventilation window 611, thereby dividing the air intake into two paths and forming a concentrated airflow.

[0074] In some embodiments, the partition 620 can be a sponge partition 620 made of sponge. The thickness of the sponge partition 620 is slightly larger than the distance between the sealing plate 610 and the ventilation panel 130 after assembly. The sponge partition 620 is directly attached to the ventilation panel 130 by adhesive. The sealing plate 610 is fixed to the ventilation panel 130 by a support and the sponge partition 620 is pressed tightly to form an air inlet cavity divided into two cavities. The assembly is convenient, fast and low-cost, and the sponge partition 620 is easy to make into a neat shape with little impact on the airflow. In other equivalent embodiments, the partition 620 can also be made of other materials, such as a metal sheet partition 620. By welding one edge of the metal sheet to the ventilation panel 130, and then fixing the sealing plate 610 to the ventilation panel 130 by a support and screws, the air inlet cavity divided into two cavities is formed.

[0075] In some embodiments, as Figure 1As shown, the rooftop air conditioner further includes an air outlet 140 . The air outlet 140 is provided on the housing 100 and communicates with the accommodating chamber 700 , so that the air in the accommodating chamber 700 that has undergone heat exchange is discharged from the air outlet 140 .

[0076] In some embodiments, the air outlet 140 is disposed adjacent to the heat sink to shorten the heat dissipation path.

[0077] like Figure 3 as well as Figure 4 As shown, the arrows indicate the flow path of the airflow. The air outside the box 100 enters from the heat dissipation air inlet 131 located on both sides of the partition 620, passes through the sealing plate 610 and the ventilation panel 130, and reaches the ventilation windows 611 located on both sides of the partition 620 to exchange heat with the main control board 500, and is discharged from the box 100 from the air outlet 140.

[0078] Through the above solution, a heat dissipation air inlet 131 and an air outlet 140 connected to the outside are set at the position corresponding to the electrical control box 400 on the box body 100. The negative pressure in the electrical control box 400 is used to introduce air outside the box body 100 into the electrical control box 400 for heat exchange, so that the main control board 500 can effectively dissipate heat. An air duct assembly 600 is arranged in the accommodating cavity 700 formed by the electrical control box 400 and the housing 100. The air duct assembly 600 is provided with a sealing plate 610 to separate the accommodating cavity 700 of the electrical control box 400 into a cavity for heat exchange with the main control board 500 and a cavity for guiding air to flow in. A partition 620 is arranged between the sealing plate 610 and the ventilation panel 130 to divide the cavity for guiding air to flow into two channels for directional air supply to specific areas, thereby realizing zoned air supply in the accommodating cavity 700 through the air duct assembly 600, and transporting air to the concentrated area of ​​components that generate more heat on the main control board 500 to first exchange heat with them for heat dissipation. The air passes through the ventilation window 611 and preferentially contacts the main heat source of the main control board 500 to take away the heat, thereby further improving the heat dissipation effect in the electrical control box 400.

[0079] In some embodiments, a deflector 612 is provided at the edge of the ventilation window 611 on the side of the sealing plate 610 facing the main control board 500. The deflector 612 is used to confine and concentrate the airflow entering through the ventilation window 611. The deflector 612 directs air toward the area on the main control board 500 where heat is concentrated and high-temperature components are located. This prevents the airflow from escaping too quickly within the heat dissipation cavity after entering. This allows the area with high-temperature components to exchange more heat, resulting in a more uniform overall temperature.

[0080] In some embodiments, the ventilation window 611 is configured in a square shape, and four guide vanes 612 are preferably provided. The four guide vanes 612 are evenly arranged around the ventilation window 611 to form a confined opening. The confined opening is approximately cylindrical, capable of forming a concentrated and convergent airflow. The gaps between the four guide vanes 612 allow the airflow to properly escape to the surrounding area, while also dissipating heat appropriately to the surrounding area, ensuring an overall heat dissipation effect.

[0081] In some embodiments, the guide plate 612 may be disposed at an obtuse angle to the surface of the sealing plate 610 to form a more concentrated airflow, thereby achieving the effect of more concentrated airflow and preferential heat dissipation.

[0082] In some embodiments, the guide plate 612 can be set at an acute angle to the surface of the sealing plate 610, so that the guide plate 612 forms an outward-expanding constraint port, so that the airflow is relatively evenly dispersed, the area where the airflow is preferentially heat exchanged is larger, and the heat dissipation effect is more uniform.

[0083] In some embodiments, the length of the guide plate 612 in the direction of the spacing between the sealing plate 610 and the main control board 500 is greater than or equal to 10 mm. A certain distance exists between the sealing plate 610 and the main control board 500. Setting the guide plate 612 to a length of at least 10 mm reduces the distance between the channel and components on the main control board 500, ensuring that air passing through the ventilation window 611 preferentially contacts the components on the main control board 500.

[0084] In some embodiments, the main control board 500 is arranged vertically, with a primary heat source component area 510 located above the main control board 500. A heat dissipation air inlet 131 is provided below the ventilation panel 130. Air outside the cabinet 100 enters through the heat dissipation air inlet 131, flows upward between the ventilation panel 130 and the sealing plate 610, passes through the ventilation window 611, enters between the sealing plate 610 and the main control board 500, exchanges heat with the main control board 500, and is then discharged from the cabinet 100 through the air outlet 140.

[0085] By centrally arranging components above the main control board 500, heat generated by these components is concentrated and dissipated from the upper portion. The heat dissipation inlet 131 on the heat dissipation panel, which connects to the outside air of the cabinet 100, is positioned at the lower portion, offset from the ventilation window 611 on the sealing plate 610 and the components of the main control board 500. This prevents rainwater from directly entering the electrical control box 400 and reduces the ingress of dust. The dust- and rain-proof design of the electrical control box 400 reduces the impact of the heat dissipation channel connecting to the outside on the safety of the electrical control box 400, improving heat dissipation while still ensuring the reliability of the rooftop air conditioner.

[0086] In some embodiments, the main control board 500 may also have a primary heat source component area 510 located at its lower portion. A ventilation window 611 is provided at the lower portion of the sealing plate 610, and a heat dissipation inlet 131 is also provided at the lower portion of the ventilation panel 130. The ventilation window 611 and the heat dissipation inlet 131 are positioned at the same horizontal level, allowing air entering the housing 100 to more quickly engage with the main control board 500 for heat exchange. However, since hot air flows upward, it tends to accumulate in the upper portion of the heat dissipation cavity, affecting the overall average temperature of the main control board 500. Therefore, the location where the air outlet 140 communicates with the accommodating cavity 700 can be positioned near the top of the accommodating cavity 700.

[0087] In some embodiments, the lower portion of the sealing plate 610 corresponding to the heat dissipation air inlet 131 is configured as an inclined surface, and the lower edge of the inclined surface contacts the lower edge of the heat dissipation air inlet 131. That is, the portion of the sealing plate 610 corresponding to the heat dissipation air inlet 131 is configured as an inclined plate, and the lower edge of the inclined plate butts against the lower edge of the heat dissipation air inlet 131. Rainwater, dust, etc. that enters between the sealing plate 610 and the ventilation panel 130 will flow down the inclined surface and out of the cabinet 100 from the lower edge of the ventilation and heat dissipation opening.

[0088] In some embodiments, the main control board 500 is arranged vertically. A primary heat source component area 510 is located on one side of the main control board 500, near the air outlet 140, at the top of the accommodating cavity 700. Components such as loads and heat sinks that generate a large amount of heat are located in this area. At least two first ventilation windows 6111 are provided on the upper portion of the sealing plate, corresponding to the primary heat source component area 510. For example, one first ventilation window 6111 may be provided for each of the indoor and outdoor main control boards 500 and their shared finned heat sinks.

[0089] A second ventilation window 6112 is provided on the upper portion of the sealing plate, away from the main heat source component area 510, and a partition 620 separates the first ventilation window 6111 from the second ventilation window 6112. Aiming at the area where the components on the main control board 500 primarily generate heat, three first ventilation windows 6111 are provided on the sealing plate 610. The first ventilation windows 6111 and the partition 620 cooperate to form a path of air specifically for dissipating heat in areas with higher temperatures. A second ventilation window 6112 is provided on a side away from the main heat source component area 510, and the second ventilation window 6112 is away from the air outlet 140. A path of air is specifically transported from the side of the main heat source component area 510, passing through the main heat source components to the air outlet 140, further removing heat.

[0090] In some embodiments, the partition 620 can be configured to have an inverted L-shape with its upper portion bent toward the second ventilation window 6112. Since the airflow through the second ventilation window 6112 is primarily for auxiliary air supply and heat dissipation, a plurality of second ventilation windows 6112 are not provided. To allow the second ventilation windows 6112 to relatively concentrate the airflow, the partition 620 can be configured to be closer to the second ventilation window 6112.

[0091] In some embodiments, the heat dissipation air inlet 131 includes at least two first air inlets 1311 and a second air inlet 1312. The at least two first air inlets 1311 are disposed on one side of the partition 620 of the ventilation panel 130 and correspond to the first ventilation window 6111. The heat dissipation air inlet 131 may include two first air inlets 1311, arranged transversely to the horizontal length of the first ventilation window 6111, so that air entering through the first air inlet 1311 can form a smooth and direct airflow and quickly reach the first ventilation window 6111. The second air inlet 1312 is disposed on the other side of the partition 620 of the ventilation panel 130 and corresponds to the second ventilation window 6112. Air entering through the second air inlet 1312 forms a smooth and direct airflow and quickly reaches the second ventilation window 6112.

[0092] In some embodiments, the area of ​​the heat dissipation air inlet 131 is not less than 8400 mm 2 Specifically, the area corresponding to the first ventilation window 6111 is relatively large, and the total area of ​​the two first air inlets 1311 is not less than 5600mm 2 The area corresponding to the second ventilation window 6112 is smaller, and the area of ​​the second air inlet 1312 is not less than 2800mm 2 .

[0093] In some embodiments, the heat dissipation air inlet 131 is a louver air vent, and the width of a single louver air vent is less than or equal to 3 mm. Due to the limitation of the diameter, most insects cannot crawl into the heat dissipation air inlet 131 because their body size is larger than 3 mm.

[0094] In some embodiments, the louvered air vents of the heat dissipation air inlet 131 may be louvers with movable blades.

[0095] In some embodiments, the louvered vents of the heat dissipation air inlet 131 may also be inclined louvers with fixed blades, where the bottom ends of the blades are inclined toward the outside of the box 100 to block rain and dust.

[0096] In some embodiments, the heat dissipation air inlet 131 may also be a straight grille air inlet, which is easy to intake air and has low manufacturing cost.

[0097] In the above description, due to the negative pressure in the accommodating cavity 700, the air outside the housing 100 can enter the two cavities of the air inlet cavity from the first air inlet 1311 and the second air inlet 1312 of the heat dissipation air inlet 131, respectively, forming an airflow and flowing upward along the cavity, respectively entering the heat dissipation cavity from the first ventilation window 6111 and the second ventilation window 6112. The airflow entering the first ventilation window 6111 from the first air inlet 1311 preferentially contacts the main heat source components, such as the load and the radiator, for heat dissipation, and flows out from the air outlet 140 to the outside of the housing 100. The airflow entering the second ventilation window 6112 from the second air inlet 1312 flows from one side of the main heat source components, such as the radiator, through the radiator, etc. for heat dissipation, and flows out from the air outlet 140 to the outside of the housing 100.

[0098] In addition, the present application also provides a rooftop air conditioner, comprising a box body 100 , wherein an outdoor cavity 110 and an indoor cavity 120 are formed therein;

[0099] In some embodiments, a rooftop air conditioner includes an indoor heat exchanger 300 and an outdoor heat exchanger 200. The outdoor heat exchanger 200 includes an outdoor heat exchanger and an outdoor fan. The outdoor heat exchanger 200 is installed in the outdoor chamber 110. The outdoor air inlet and outdoor air outlet 140 are correspondingly provided on the side of the housing 100 where the outdoor chamber 110 is located. The indoor heat exchanger 300 includes an indoor heat exchanger and an indoor fan. The indoor heat exchanger 300 is installed in the indoor chamber 120. The indoor air inlet and indoor air outlet 140 are correspondingly provided on the side of the housing 100 where the indoor chamber 120 is located.

[0100] In some embodiments, the rooftop air conditioner further includes an electrical control box 400. The electrical control box 400 is a cylindrical, open box disposed within the indoor cavity 120 of the housing 100. The opening of the electrical control box 400 faces one side of the housing 100, the bottom of the box faces the center of the indoor cavity 120 and is adjacent to the indoor heat exchange device 300, and the side of the box is adjacent to one side of the outdoor cavity 110. The electrical control box 400 and the housing 100 form a receiving chamber 700 for accommodating the components of the rooftop air conditioner's control system.

[0101] In some embodiments, the rooftop air conditioner further includes a main control board 500. The main control board 500 is disposed in the accommodating cavity 700. The main control board 500 includes various components such as a radiator, a load, and a control chip, and these components are mounted and fixed via the bottom surface of the box body of the electrical control box 400. The main control board 500 is located on the side of the accommodating cavity 700 close to the indoor heat exchange device, and the box body 100 on the open side of the electrical control box 400 is located opposite the main control board 500. In this embodiment, the side of the box body 100 opposite the main control board 500 is configured as a ventilation panel 130 of the accommodating cavity 700, thereby improving the utilization rate of the components of the box body 100 and achieving an optimized spatial structure design. In addition, the ventilation panel 130 can be configured as a door panel that can be removed and opened separately, so that it can be opened separately to facilitate maintenance of the air conditioner electronic control system. At least two heat dissipation air inlets 131 are provided on the ventilation panel 130 , through which outdoor air can enter the accommodating cavity 700 and perform heat exchange with components on the main control board 500 .

[0102] In some embodiments, the rooftop air conditioner further includes an air duct assembly 600. The air duct assembly 600 is disposed between the main control board 500 and the ventilation panel 130 to separate the accommodating cavity 700, and forms a heat dissipation channel on the side close to the main control board 500 and an air intake channel 710 on the side close to the ventilation panel 130.

[0103] In some embodiments, the air inlet channel 710 includes a first air duct 711 and a second air duct 712 that are independent of each other. The first air duct 711 connects at least one heat dissipation air inlet 131 and the heat dissipation channel, and the two ends of the second air duct 712 are respectively connected to at least one heat dissipation air inlet 131 and the heat dissipation channel.

[0104] In some embodiments, the rooftop air conditioner further includes an air outlet 140 . The air outlet 140 is provided on the housing 100 and communicates with the accommodating chamber 700 , so that the air in the accommodating chamber 700 that has undergone heat exchange is discharged from the air outlet 140 .

[0105] In some embodiments, the air outlet 140 is disposed adjacent to the heat sink to shorten the heat dissipation path.

[0106] The air outside the box enters from the heat dissipation air inlet 131 located on both sides of the partition 620, passes through the sealing plate 610 and the ventilation panel 130, and exchanges heat with the main control board 500 at the ventilation windows 611 located on both sides of the partition 620, and is discharged from the box body 100 from the air outlet 140.

[0107] Through the above solution, a heat dissipation air inlet 131 and an air outlet 140 connected to the outside are provided on the housing 100 at positions corresponding to the electrical control box 400. The negative pressure within the electrical control box 400 draws air from outside the housing 100 into the electrical control box 400 for heat exchange, thereby effectively dissipating heat from the main control board 500. An air duct assembly 600 is provided in the accommodating cavity 700 formed by the electrical control box 400 and the housing 100. The air duct assembly 600 separates the accommodating cavity 700 of the electrical control box 400 into a heat dissipation channel for heat exchange with the main control board 500 and an air inlet channel 710 for guiding air flow. The air inlet channel 710 is divided into a first air duct 711 and a second air duct 712 for directional air supply to specific areas. Thus, the air duct assembly 600 realizes zoned air supply in the accommodating cavity 700 and delivers airflow to the concentrated area of ​​the main control board 500 where heat is generated more, thereby further improving the heat dissipation effect within the electrical control box 400.

[0108] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A rooftop air conditioner, characterized in that: include: The box body has an outdoor cavity and an indoor cavity formed therein; an outdoor heat exchange device, disposed in the outdoor cavity; An indoor heat exchange device is arranged in the indoor cavity; An electric control box is disposed in the indoor cavity and cooperates with the side panels of the box to form a receiving cavity. One side of the box is a ventilation panel, and the ventilation panel is provided with at least two heat dissipation air inlets. The receiving cavity is connected to the outside of the box through the heat dissipation air inlets. a main control panel, disposed in the accommodating cavity and located on a side opposite to the ventilation panel; An air duct assembly is provided in the accommodating cavity and is used to cooperate with the ventilation panel and the electric control box to dissipate heat from the main control board, and includes: A sealing plate is provided between the main control board and the ventilation panel, and is used to isolate the main control board from the heat dissipation air inlet and separate the accommodating cavity into two independent cavities; at least two ventilation windows are respectively provided on the sealing plate corresponding to locations where components on the main control board are concentrated; A partition is provided between the sealing plate and the ventilation panel, and each side of the partition has at least one heat dissipation air inlet, and each side of the partition has at least one ventilation window; an air outlet, the air outlet being provided in the box body and communicating with the accommodating cavity; The air outside the box enters from the heat dissipation air inlets located on both sides of the partition, passes through the sealing plate and the ventilation panel, and exchanges heat with the main control board through the ventilation windows located on both sides of the partition, and is discharged from the box from the air outlet.

2. A rooftop air conditioner according to claim 1, characterized in that: A guide plate is provided on the edge of the ventilation window on the side of the sealing plate facing the main control board, and the guide plate is used to constrain and concentrate the airflow entering through the ventilation window.

3. A rooftop air conditioner according to claim 2, characterized in that: The length of the guide plate in the spacing direction between the sealing plate and the main control board is greater than or equal to 10 mm.

4. A rooftop air conditioner according to claim 1, characterized in that: The main control board is arranged vertically and the main heat source component area is arranged on the upper part of the main control board, and the heat dissipation air inlet is opened at the lower part of the ventilation panel; The air outside the box enters from the heat dissipation air inlet, flows upward between the ventilation panel and the sealing plate, enters between the sealing plate and the main control board through the ventilation window, exchanges heat with the main control board, and is discharged from the box from the air outlet.

5. A rooftop air conditioner according to claim 4, characterized in that: The lower portion of the sealing plate is arranged to be an inclined surface corresponding to the heat dissipation air inlet, and the lower edge of the inclined surface contacts the lower edge of the heat dissipation air inlet.

6. The rooftop air conditioner according to claim 1, characterized in that: The main control board is arranged vertically, and the main control board is located in the upper part of the accommodating cavity near the air outlet. The main heat source component area is set, and the upper part of the sealing plate is provided with at least two first ventilation windows corresponding to the main heat source component area. The upper part of the sealing plate is provided with a second ventilation window away from the main heat source component area, and the partition separates the first ventilation window and the second ventilation window.

7. A rooftop air conditioner according to claim 6, characterized in that: The heat dissipation air inlet includes: at least two first air inlets, disposed on one side of the partition on the ventilation panel and corresponding to the first ventilation windows; The second air inlet is arranged on the other side of the partition on the ventilation panel and corresponds to the second ventilation window.

8. The rooftop air conditioner according to claim 1, characterized in that: The area of ​​the heat dissipation air inlet is not less than 8400mm 2 .

9. The rooftop air conditioner according to claim 1, characterized in that: The heat dissipation air inlet is a louver air inlet, and the single opening width of the louver air inlet is less than or equal to 3 mm.

10. A rooftop air conditioner, characterized in that: include: The box body has an outdoor cavity and an indoor cavity formed therein; an outdoor heat exchange device, disposed in the outdoor cavity; An indoor heat exchange device is arranged in the indoor cavity; An electric control box is disposed in the indoor cavity and cooperates with the side panels of the box to form a receiving cavity. One side of the box is a ventilation panel, and the ventilation panel is provided with at least two heat dissipation air inlets. The receiving cavity is connected to the outside of the box through the heat dissipation air inlets. a main control panel, disposed in the accommodating cavity and located on a side opposite to the ventilation panel; An air duct assembly is provided between the main control board and the ventilation panel to separate the accommodating cavity, and forms a heat dissipation channel on a side close to the main control board and an air intake channel on a side close to the ventilation panel; The air inlet channel includes a first air duct and a second air duct that are independent of each other, the first air duct is connected to at least one of the heat dissipation air inlet and the heat dissipation channel, and the two ends of the second air duct are respectively connected to at least one of the heat dissipation air inlet and the heat dissipation channel; an air outlet, the air outlet being provided in the box body and communicating with the accommodating cavity; The air outside the box enters from the heat dissipation air inlet, passes through the first air duct and the second air duct respectively, reaches the heat dissipation channel and exchanges heat with the main control board, and is discharged from the box from the air outlet.

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