Electric appliance box and water module

Abstract

The application discloses an electric appliance box and a water module, and relates to the technical field of heat pumps; the electric appliance box comprises a box body, a box cover, an electric control board, a first flange and a limiting plate; the box body is provided with a first opening, the first opening is communicated with the inside of the box body; the box cover is arranged at the first opening in an openable and closable mode; one end of the box cover in the length direction is a first end; the electric control board is arranged in the box body; the first flange is arranged on the box cover; the first flange extends along the outer periphery of the box cover; the first flange is disconnected at two corner portions of the first end to form a avoiding portion; the limiting plate is arranged at one end of the box body in the length direction, and the limiting plate is located at the first opening; wherein, the first end extends into the inside of the box body and is located at one side of the limiting plate towards the inside of the box body; the first flange arranged at the first end is located in the box body, and the first flange located at other regions of the box cover is located outside the box body, so that the edge of the first opening is wrapped by the first flange, thereby increasing the sealing effect of the box cover on the box body.

Description

Technical Field

[0001] This application relates to the technical field of heat pumps, and more particularly to electrical boxes and water modules. Background Technology

[0002] The electrical box is a crucial component of heat pump equipment such as water modules or air conditioning units. It integrates electrical components such as control boards, capacitors, and relays to provide power and control for critical components like the compressor and fan. The performance of the electrical box directly affects the operating efficiency, lifespan, and safety of the heating equipment.

[0003] Appliance boxes are typically a separate structure consisting of a box body and a lid. The lid snaps onto the opening of the box body to seal it. If the connection between the lid and the box body is secure, the box body is not easily opened; if the connection is weak, the lid will not seal the box well, allowing moisture, dust, insects, and other contaminants to easily enter the appliance box.

[0004] In related technologies, the connection method between the lid and the body of the box cannot adequately meet the requirements of the electrical appliance box. Utility Model Content

[0005] To address the shortcomings of related technologies, this application provides an electrical box and a water module. By setting a limiting plate on the box body, one end of the box cover extends into the box body and is pressed by the limiting plate, thereby limiting the box body to the box cover. A first flange is set on the outer periphery of the box cover, which wraps around the edge of the first opening, thereby increasing the sealing effect of the box cover on the box body.

[0006] This application provides an electrical box, including: The box has a first opening that communicates with the interior of the box. A lid is provided at the first opening in a closable manner; one end of the lid along its length is the first end. The control board is located inside the box. The first flange is provided on the box lid; the first flange extends along the outer periphery of the box lid; the first flange breaks at two corners at the first end to form a clearance portion; A limiting plate is located at one end of the box body along its length, and the limiting plate is located at the first opening; The first end extends into the box body and is located on the side of the limiting plate facing the inside of the box body. The first flange located at the first end is located inside the box body, and the first flange located in other areas of the box cover is located outside the box body.

[0007] In the technical solution, a limiting plate is set on the box body so that one end of the box cover extends into the box body and is pressed by the limiting plate, thereby limiting the box body to the box cover; and a first flange is set on the outer periphery of the box cover so that the first flange is located on the edge of the box body that wraps the first opening, thereby increasing the sealing effect of the box cover to the box body; and the first flange is broken at the two corners at the first end to avoid structural interference caused by the continuous setting of the first flange.

[0008] In some embodiments of this application, the first flange located on one side of the clearance portion is disposed inside the box, and the first flange located on the other side of the clearance portion is disposed outside the box; A positioning plate is provided on the outside of the box, and the positioning plate is connected to the limiting plate; the positioning plate cooperates with the first flange located outside the box to position the distance by which the box lid extends into the inside of the box.

[0009] In the technical solution, by setting a positioning plate on the outside of the box, the first flange breaks at the contact of the positioning plate, thereby positioning the distance the box cover extends into the box body. This avoids problems such as incomplete closure or over-fitting caused by excessive or insufficient installation, ensuring consistency, reliability, and assembly efficiency in each assembly.

[0010] In some embodiments of this application, the first opening is located on one side of the box body in the thickness direction, the length direction of the limiting plate is set along the width direction of the box body, and positioning plates are respectively provided at both ends of the limiting plate in the length direction, with the length direction of the positioning plates set along the thickness direction of the box body.

[0011] In the technical solution, by limiting the position of the first opening and the setting direction of the limiting plate and the positioning plate, the positioning plate can effectively limit the box cover at both ends in the width direction of the box, ensuring the rationality of the overall structural design of the electrical box and the ease of assembly.

[0012] In some embodiments of this application, a second flange is provided at the first opening, the second flange is disposed toward the inner side of the box, and a contact surface is formed on the side of the second flange toward the box lid, the contact surface being in contact with the side of the box lid toward the inner side of the box.

[0013] In the technical solution, by setting a second flange at the first opening, the second flange contacts the lid surface, thereby increasing the contact area between the lid and the box body, thus increasing the firmness of the connection between the lid and the box body; and the second flange can seal the connection gap between the box body and the lid, increasing the sealing performance of the electrical box, thereby better protecting the internal control board from external dust, moisture and other influences.

[0014] In some embodiments of this application, the side of the lid facing the inside of the box body is provided with an insertion part, and the second flange is provided with a mating part. The mating part and the insertion part are correspondingly provided, and the insertion part is located in the mating part to position the connection between the lid and the box body.

[0015] In the technical solution, an insertion part is provided on the lid and a mating part is provided on the second flange, so that the mating part is located inside the mating part to position the connection between the lid and the box body.

[0016] In some embodiments of this application, the side wall of the box body opposite to the first opening is provided with a through portion, which communicates with the interior of the box body; a heat sink is provided on the control board, which is located outside the box body through the through portion.

[0017] In the technical solution, a heat sink is installed on the control board and a through-hole is provided on the box body, so that the heat sink is located outside the box body through the through-hole, so that the heat transferred from the control board to the heat sink is carried away by the air outside the box body, thereby dissipating heat from the control board.

[0018] In some embodiments of this application, an air duct component is provided on the outside of the housing, the air duct component is connected to the side wall of the housing where the through portion is provided, and the air duct component and the housing together define a heat dissipation air duct with one end open; the heat sink is located inside the heat dissipation air duct; the projection of the air duct component on the side wall of the housing where the through portion is provided covers the through portion.

[0019] In the technical solution, by setting an air duct component on the outside of the box, the air duct component and the box together define a heat dissipation air duct, and the heat sink is located inside the heat dissipation air duct, so that the heat dissipation air duct guides the air and increases the heat dissipation effect of the heat sink; by making the projection of the air duct component on the bottom wall of the box cover the through part, the air duct component seals the through part, preventing moisture, dust and other substances from entering the box from the through part, thus protecting the internal components of the electrical box.

[0020] In some embodiments of this application, the outer periphery of the air duct component is provided with a third flange, the third flange is located outside the heat dissipation air duct, and the third flange is in contact with the side wall surface of the box body where the through portion is provided.

[0021] In the technical solution, by setting a third flange on the air duct component, so that the third flange contacts the outer bottom wall of the box, not only can the contact area between the air duct component and the box be increased, thereby increasing the firmness of the connection between the air duct component and the box, but the connection gap between the air duct component and the box can also be sealed, thereby sealing the heat dissipation air duct, preventing air leakage in the heat dissipation air duct, increasing the air volume in the heat dissipation air duct, thereby ensuring the heat dissipation effect of the radiator. At the same time, it can also reduce the entry of external dust and other impurities into the heat dissipation air duct, ensuring the cleanliness of the heat dissipation air duct, thereby ensuring the heat dissipation effect of the radiator.

[0022] In some embodiments of this application, the air duct component is provided with a drive fan, the air inlet side of the drive fan faces the heat dissipation air duct, and the air outlet side of the drive fan faces the outside of the heat dissipation air duct; by driving the fan to operate, air enters the heat dissipation air duct through the opening of the heat dissipation air duct, comes into contact with the heat sink, and then flows out of the heat dissipation air duct through the drive fan.

[0023] In the technical solution, a drive fan is installed on the air duct component. The rotation of the drive fan increases the airflow speed in the heat dissipation air duct, thereby increasing the heat exchange efficiency between the air and the radiator, and thus increasing the heat dissipation effect of the radiator.

[0024] In addition, this application also provides a water module, including: The casing has air vents that allow air to enter and exit the casing. The aforementioned electrical box is installed inside the casing and positioned near the top of the casing; one end of the electrical box along its length faces the top of the casing, and the other end along its length faces the bottom of the casing.

[0025] In the technical solution, the reliability of the water module's operation is increased by configuring the aforementioned electrical box on the water module.

[0026] In the above embodiments, the electrical box and water module are equipped with a limiting plate on the box body, so that one end of the box cover extends into the box body and is pressed by the limiting plate, thereby limiting the box body to the box cover; and a first flange is provided on the outer periphery of the box cover, so that the first flange wraps around the edge of the first opening, thereby increasing the sealing effect of the box cover to the box body. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of one embodiment of the electrical box in this application; Figure 2 This is a structural schematic diagram of another embodiment of the electrical box in this application from another angle; Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 for Figure 2 Enlarged view of a section at point B in the middle; Figure 5 for Figure 2 Sectional view of AA; Figure 6 for Figure 5 Enlarged view of a section at point C; Figure 7 This is a schematic diagram of the structure of the box body and the box cover in one embodiment of the electrical box in this application; Figure 8 for Figure 7 Enlarged view of a section at point D; Figure 9 for Figure 7 Enlarged view of a section at point E in the middle; Figure 10 This is a schematic diagram of the electrical box in one embodiment of the present application when the box cover is not assembled; Figure 11 for Figure 10Enlarged view of a section at point F in the middle; Figure 12 This is a schematic diagram of the airflow path through the interior of the electrical box in one embodiment of the present application; Figure 13 This is a schematic diagram of the internal structure of the electrical box in one embodiment of this application; Figure 14 This is a cross-sectional view of one embodiment of the electrical box in this application, showing a partition installed inside the box. Figure 15 for Figure 14 Enlarged view of a section at point G in the middle; Figure 16 This is a schematic diagram of the partition structure in one embodiment of the electrical box in this application; Figure 17 This is a schematic diagram of the structure of the electrical control board and mounting bracket mounted on the partition in one embodiment of the electrical box in this application; Figure 18 This is a schematic diagram of the bottom structure of the electrical box in one embodiment of the present application; Figure 19 This is a schematic diagram of the airflow path when air flows through the heat dissipation duct in one embodiment of the electrical box in this application; Figure 20 This is a schematic diagram of the air duct component in one embodiment of the electrical box in this application; Figure 21 This is a structural schematic diagram of the air duct component from another angle in one embodiment of the electrical box in this application; Figure 22 This is a cross-sectional view of the electrical box in one embodiment of the present application, in which the heat sink is disposed in the heat dissipation duct; Figure 23 This is a schematic diagram of the electrical box in one embodiment of the present application when the electrical box is tilted. Figure 24 This is a schematic diagram showing the dimensions of the air duct component in one embodiment of the electrical box in this application; Figure 25 This is a simulation diagram of airflow within the heat dissipation duct in one embodiment of the electrical box in this application; Figure 26 This is a structural schematic diagram of an embodiment of the electrical box in this application from another angle; Figure 27 This is a schematic diagram of the structure of one embodiment of the water module in this application; Figure 28 This is a schematic diagram of the structure of the water module in one embodiment of this application when the top cover is not installed; Figure 29 This is a schematic diagram of the internal structure of a water module according to one embodiment of this application; Figure 30This is a schematic diagram of the airflow path during heat dissipation of the electronic control board in one embodiment of the water module in this application. Figure 31 This is a schematic diagram of the airflow path from another angle when the control board dissipates heat during a water module embodiment in this application. Figure 32 This is a schematic diagram of the airflow path at other angles when the control board dissipates heat in one embodiment of the water module in this application.

[0028] In the diagram, 100 is the electrical box; 200 is the casing; 300 is the compressor; 400 is the gas-liquid separator; 500 is the first heat exchanger; and 600 is the second heat exchanger. 101. Heat dissipation hole; 102. Heat dissipation duct; 103. Mounting hole; 104. Through section; 105. Insulation cavity; 106. Mounting port; 107. First plane; 110. Box cover; 120. Box body; 130. Air duct component; 140. Cooling fan; 150. Electrical control board; 160. Drive fan; 170. Heat sink; 180. Flexible component; 190. Partition; 1100. Mounting bracket; 111. Box lid body; 112. First flange; 113. Clearance section; 121. Limiting plate; 122. Positioning plate; 123. Second flange; 124. Threading section; 125. Sixth flange; 1231. Mating part; 1232. First connecting hole; 1233. Contact surface; 131. Third flange; 132. Hook; 133. First connector; 134. Second connector; 1301, First inclined surface; 1331, First side surface; 1341, Second side surface; 1342, Connecting part; 141. Mounting plate; 151. Capacitor; 161. Second plane; 191. Partition body; 192. Second passage section; 193. Fourth flange; 194. Fifth flange; 1011, stop bar; 201. Air inlet; 202. First air outlet; 203. Second air outlet. Detailed Implementation

[0029] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0030] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0031] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0032] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0033] The electrical box 100 provided in this application can have various implementation forms. Figure 1 and Figure 2 This is one specific embodiment of the electrical box 100 of this application. For example... Figures 1-2 As shown, the electrical box 100 includes a box body 120, and the box body 120 has a first opening that communicates with the interior of the box body 120. For ease of description, the side wall of the box body 120 opposite to the first opening is referred to as the bottom wall of the box body 120.

[0034] In some embodiments, the first opening is located on one side of the box body 120 in the thickness direction, so that the first opening has a large size, thereby facilitating the placement and removal of components into the box body 120.

[0035] like Figure 1 and Figure 2 As shown, the electrical box 100 includes a cover 110, which is openable and closable at the first opening. The cover 110 is used to open or close the first opening to facilitate the placement of components such as the control board 150 inside the box body 120, while protecting the components inside the box body 120 and preventing moisture, dust, etc. from entering the box body 120 through the first opening.

[0036] like Figure 5 and Figure 10 As shown, the electrical box 100 includes an electronic control board 150, which is disposed inside the box body 120. One side of the electronic control board 150 faces the bottom wall of the box body 120, and the other side of the electronic control board 150 faces the first opening. Electronic components such as capacitors 151 are provided on the electronic control board 150, and the electronic components such as capacitors 151 are located on the side of the electronic control board 150 facing the first opening.

[0037] In this application, by setting a limiting plate 121 on the box body 120, one end of the box cover body 111 extends into the box body 120 and is pressed by the limiting plate 121, and a first flange 112 is set on the outer periphery of the box cover body 111, so that at least part of the first flange 112 is located outside the box body 120, so that the first flange 112 can wrap around the edge of the first opening, thereby increasing the sealing effect of the box cover 110 on the first opening.

[0038] Specifically, such as Figure 3 As shown, the limiting plate 121 is located at one end of the length direction of the box 120, and the limiting plate 121 is located at the first opening, and the limiting plate 121 blocks the first opening.

[0039] like Figure 3 As shown, the lid 110 includes a lid body 111, which is used to seal the first opening. One end of the lid body 111 extends into the box body 120 and is located on the side of the limiting plate 121 facing the inside of the box body 120, while the other areas of the lid body 111 are located outside the box body 120.

[0040] like Figure 4 As shown, the lid 110 includes a first flange 112, which is located on the outer periphery of the lid body 111 and extends along the outer periphery of the lid body 111. The first flange 112 is located on the outside of the box body 120 and contacts the outer wall of the box body 120 so that the lid 110 is fastened to the box body 120.

[0041] For ease of description, the end of the lid body 111 that extends into the box body 120 is referred to as the first end.

[0042] The first end extends into the box body 120 and is located on the side of the limiting plate 121 facing the inside of the box body 120, so that the limiting plate 121 presses against the box cover body 111, thereby forming a stable constraint on one end of the box cover 110 in the length direction, preventing gaps from appearing at the first end due to equipment vibration or external force. At the same time, the pressing effect of the limiting plate 121 can also make the box cover 110 and the box body 120 form a tight fit in this area, preventing moisture, dust, flames, etc. from entering the inside of the box body 120 from the contact position between the first end and the box body 120.

[0043] The first flange 112 is located on the outside of the box body 120 and contacts the outer wall of the box body 120, so that the first flange 112 wraps around the edge of the first opening on the outside of the box body 120, which is equivalent to forming a ring-shaped shielding structure around the first opening on the outside of the box body 120. The first flange 112 is in close contact with the outer wall of the box body 120, which can not only directly block external pollutants from entering from the outer periphery of the first opening, but also further fill the possible small gaps between the box cover 110 and the box body 120. Through the dual protection of internal pressing and limiting and external wrapping and shielding, the sealing performance of the entire electrical box 100 is effectively improved.

[0044] It should be noted that when the lid 110 is connected to the box body 120, the first end is located inside the box body 120, the first flange 112 is located outside the box body 120, and the first flange 112 is located on the outer edge of the lid body 111. If the first flange 112 is provided at the first end, it is easy for the first flange 112 to interfere with the edge of the first opening, making it impossible for the lid 110 to be fastened. Therefore, in some embodiments, the first flange 112 is not provided at the first end, and the first flange 112 extends along the other edges of the lid body 111.

[0045] In other embodiments, such as Figure 6 As shown, the first end is also provided with a first flange 112, but the first flange 112 is broken at the two corners of the first end to form a relief part 113, so that the first flange 112 provided at the first end is located inside the box body 120, and the first flange 112 provided in other areas of the box cover 110 is located outside the box body 120, thereby realizing the fastening of the box cover 110 and the box body 120.

[0046] The clearance portion 113 is a break provided on the first flange 112, which forms two parts of the first flange 112, one part of which is located inside the box body 120 and the other part is located outside the box body 120. The first flange 112 on one side of the clearance portion 113 is located inside the box body 120, and the first flange 112 on the other side of the clearance portion 113 is located outside the box body 120.

[0047] The first end extends into the box body 120 and is located on the side of the limiting plate 121 facing the inside of the box body 120. The first flange 112 located at the first end is located inside the box body 120, and the first flange 112 located in other areas of the box cover body 111 is located outside the box body 120, so that the first flange 112 wraps around the box body 120, thereby increasing the sealing effect of the first opening.

[0048] In some embodiments, in order to facilitate the first flange 112 being located on the outside of the box body 120, the first flange 112 is also broken at other corners of the box cover 110 to form a relief portion 113, so as to increase the elasticity of the first flange 112, thereby allowing the first flange 112 located on the outside of the box body 120 to abut against the outer wall of the box body 120.

[0049] like Figure 7As shown, the box body 120 is provided with a second flange 123, which is located at the outer edge of the first opening. The second flange 123 is disposed facing the inner side of the box body 120, and a contact surface 1233 is formed on the side of the second flange 123 facing the lid body 111. The contact surface 1233 contacts the side of the lid body 111 facing the inside of the box body 120 to increase the contact area between the lid 110 and the box body 120, thereby increasing the sealing effect at the opening of the lid 110 and the box body 120, and also increasing the fit and sealing between the lid 110 and the box body 120, preventing moisture and dust from entering the interior of the box body 120 from the gap between the box body 120 and the lid body 111.

[0050] It should be noted that, as Figure 11 As shown, the limiting plate 121 is located above the contact surface 1233. The limiting plate 121 and the contact surface 1233 are a certain distance apart in the thickness direction of the box body 120. The box cover body 111 is located between the limiting plate 121 and the contact surface 1233, so that the limiting plate 121 and the contact surface 1233 together limit the box cover body 111.

[0051] like Figure 3 As shown, a positioning plate 122 is provided on the outside of the box body 120, and the positioning plate 122 is connected to the limiting plate 121. The positioning plate 122 cooperates with the first flange 112 located outside the box body 120 to position the distance of the box cover 110 extending into the box body 120, so that the box cover 110 can be quickly and accurately fastened at the first opening, and can prevent the box cover 110 from affecting the seal or damaging the internal components due to the distance of the box cover 110 extending into the box body 120 being too small or too large.

[0052] In some embodiments, the length direction of the limiting plate 121 is arranged along the width direction of the box body 120, and the two ends of the length direction of the limiting plate 121 are respectively provided with positioning plates 122, and the length direction of the positioning plates 122 is arranged along the thickness direction of the box body 120.

[0053] To facilitate the connection between the limiting plate 121, the positioning plate 122 and the box body 120, in some embodiments, a second opening is provided at one end of the box body 120 along its length, and a cover plate is provided at the second opening to seal the second opening; the limiting plate 121 and the positioning plate 122 are respectively connected to the cover plate and arranged along the circumference of the cover plate, and the limiting plate 121, the positioning plate 122 and the cover plate are connected to each other to form a cover, which is fastened to the second opening to facilitate the connection between the limiting plate 121 and the positioning plate 122, and also to facilitate the connection between the limiting plate 121 and the box body 120 and the positioning plate 122 and the box body 120.

[0054] The lid body 111 has an insertion part located on the side of the lid body 111 facing the inside of the box body 120. For example... Figure 7As shown, the second flange 123 is provided with a mating part 1231, which is correspondingly provided with the insertion part. The insertion part is inserted into the mating part 1231 to position the connection between the box cover 110 and the box body 120.

[0055] like Figure 7 As shown, the second flange 123 is provided with a first connecting hole 1232, and the box body 120 is provided with a second connecting hole. The second connecting hole and the first connecting hole 1232 are correspondingly arranged, and the same fastener is installed in the second connecting hole and the first connecting hole 1232 to connect the box cover 110 and the box body 120. It should be noted that when the insertion part is inserted into the mating part 1231, the second connecting hole and the first connecting hole 1232 are aligned.

[0056] In some embodiments, the insertion part is a hook, and the mating part 1231 is an insertion port. The hook is disposed in the insertion port so that the box cover body 111 is connected to the second flange 123.

[0057] The installation steps of the lid 110 are as follows: First, insert the first end into the box body 120 and position it below the limiting plate 121. Then, position the first flange 112 of the other part of the lid body 111 on the outside of the box body 120, and simultaneously insert the insertion part into the mating part 1231 so that the lid 110 is fastened to the box body 120. Then, place the fasteners in the second connecting hole and the first connecting hole 1232 aligned with the second connecting hole so that the lid 110 and the box body 120 are connected to each other.

[0058] like Figure 15 As shown, the electrical box 100 includes a mounting bracket 1100, which is disposed inside the box body 120. The mounting bracket 1100 is used to mount the electrical control board 150 to increase the firmness of the electrical control board 150 in the box body 120.

[0059] The control board 150 generates heat during operation. If the heat accumulates inside the housing 120, it will cause the internal temperature of the housing 120 to rise, resulting in damage to the control board 150.

[0060] In some embodiments of this application, such as Figure 5 As shown, a cooling fan 140 is installed on the housing 120. The operation of the cooling fan 140 causes air to flow through the inside of the housing 120, thereby allowing the air to dissipate heat from the electronic control board 150.

[0061] Specifically, such as Figure 5 and Figure 10As shown, the electrical box 100 includes a cooling fan 140, which is installed in the box body 120. The air inlet side of the cooling fan 140 faces the inside of the box body 120, and the air outlet side of the cooling fan 140 faces the outside of the box body 120, so that air can flow from the outside of the box body 120 into the box body 120 and then flow out of the box body 120.

[0062] like Figure 7 As shown, a heat dissipation hole 101 is provided on the housing 120, which communicates with the interior of the housing 120 and allows air to enter the interior of the housing 120. A mounting hole 103 is also provided on the housing 120, communicating with the interior of the housing 120, allowing air inside the housing 120 to flow out through the mounting hole 103. A cooling fan 140 is mounted in the mounting hole 103. The mounting hole 103 and the heat dissipation hole 101 are respectively located on opposite side walls of the housing 120, ensuring reliable airflow by allowing air to enter the housing 120 through the heat dissipation hole 101, contact the electronic control board 150, and then flow out of the housing 120 through the mounting hole 103.

[0063] like Figure 10 As shown, a capacitor 151 is provided on the control board 150. The capacitor 151 is positioned close to the mounting hole 103 so that the heat generated by the capacitor 151 is closer to the air intake side of the cooling fan 140. Under the action of the cooling fan 140, the hot air around the capacitor 151 can be drawn into the cooling fan 140 and discharged from the housing 120 more quickly, avoiding the accumulation of heat near the capacitor 151.

[0064] Capacitor 151 is positioned away from the heat dissipation hole 101 to prevent external cold air from directly impacting it, thus preventing damage due to sudden temperature changes. This ensures the stability and lifespan of capacitor 151, thereby increasing the reliability of the entire control board 150. Simultaneously, it prevents flames from contacting capacitor 151 through the heat dissipation hole 101 and burning it, enhancing the flame-suppressing performance of the electrical box 100.

[0065] like Figure 12 As shown, the cooling fan 140 operates, causing air to enter the housing 120 through the heat dissipation hole 101, come into contact with the electronic control board 150, and then flow out of the housing 120 through the mounting hole 103.

[0066] like Figure 13As shown, the sidewall with the heat dissipation hole 101 and the sidewall with the mounting hole 103 are arranged opposite each other in the width direction of the box 120 to avoid the heat dissipation hole 101 and the mounting hole 103 being on the same straight line in the width direction of the box 120, thus avoiding a straight airflow path. This increases the airflow path and residence time inside the box 120, allowing the air to fully contact the electronic control board 150 and fully absorb the heat generated by the electronic control board 150, thereby increasing the heat dissipation effect of the electronic control board 150.

[0067] The sidewall with heat dissipation hole 101 and the sidewall with mounting hole 103 extend along the length of the box 120, respectively. The heat dissipation hole 101 and the mounting hole 103 are staggered along the length of the box 120 to increase the airflow path and residence time inside the box 120, so that the air can fully contact the electronic control board 150 and fully absorb the heat generated by the electronic control board 150, thereby increasing the heat dissipation effect of the electronic control board 150.

[0068] like Figure 1 As shown, one end of the box body 120 along its length is set upwards, and the other end along its length is set downwards; the mounting hole 103 is located above the heat dissipation hole 101, so that the setting positions of the mounting hole 103 and the heat dissipation hole 101 conform to the natural air convection law.

[0069] Since heated air tends to rise, by placing the mounting hole 103 above the heat dissipation hole 101, the air can flow more naturally toward the mounting hole 103, creating a synergistic effect with the suction of the cooling fan 140, accelerating the exhaust of hot air. At the same time, cool air enters from the heat dissipation hole 101 below, enhancing the air circulation efficiency inside the box 120, increasing the heat dissipation performance of the electrical box 100, and reducing the operating load of the cooling fan 140.

[0070] like Figure 9 As shown, a baffle 1011 is provided at the heat dissipation hole 101. The baffle 1011 is located on the outside of the box 120. The projection of the baffle 1011 on the side wall of the box 120 covers the heat dissipation hole 101, so that the baffle 1011 can effectively block external dust, rainwater, debris and other objects from directly entering the box 120 from the heat dissipation hole 101, and prevent these impurities from adhering to the electronic control board 150 and affecting its normal operation or causing short circuits and other faults.

[0071] The upper side of the baffle 1011 is connected to the side wall of the box 120, and the lower side of the baffle 1011 has a gap δ with the side wall of the box 120 to form a ventilation hole, so that air can smoothly enter the interior of the box 120 and avoid the baffle 1011 blocking the heat dissipation hole 101. Thus, the baffle 1011 can achieve dust and water protection without affecting the air intake function of the heat dissipation hole 101, thereby increasing the applicability and safety of the electrical box 100 in complex environments.

[0072] In some embodiments, such as Figure 9 As shown, the gap δ between the lower side of the baffle 1011 and the side wall of the box 120 is 3mm, so as to ensure air circulation while preventing mosquitoes from entering the box 120 through the gap.

[0073] The control board 150 is connected to a wiring harness, which connects the control board 150 to a power supply or other components. For example... Figure 7 As shown, a wire-passing part 124 is provided on the side wall of the box 120. The wire-passing part 124 is used to connect the inner and outer sides of the box 120 and to allow the wire harness to pass through the side wall of the box 120 and connect to the electrical control board 150.

[0074] To prevent moisture, insects, flames, and dust from entering the housing 120 through the threading section 124, such as Figure 5 As shown, an elastic element 180 is provided at the wire threading section 124, and the elastic element 180 has a gap for the wire harness to pass through. When the wire harness passes through the gap of the elastic element 180, the elastic element 180 will tightly wrap the wire harness due to its own elasticity, forming a good sealing effect. This can effectively prevent external dust, moisture, etc. from entering the box 120 through the wire threading gap, protecting the electrical control board 150 from the influence of the external environment. At the same time, the elasticity of the elastic element 180 also facilitates the installation and removal of the wire harness. When installing the wire harness, it can be easily inserted by opening the gap. After installation, the elastic element 180 automatically resets and seals.

[0075] In some embodiments, such as Figure 7 As shown, the threading part 124 is an opening provided on the side wall of the box body 120.

[0076] like Figure 13 As shown, a mounting plate 141 is connected to the outside of the housing 120, and the mounting plate 141 is located at the mounting hole 103. The mounting plate 141 is used to install the cooling fan 140, and supports the cooling fan 140 to prevent the cooling fan 140 from shifting or falling off due to vibration or other factors during operation, thereby increasing the reliability and stability of the cooling fan 140. At the same time, installing the cooling fan 140 on the mounting plate 141 also facilitates the later maintenance and replacement of the cooling fan 140.

[0077] In some embodiments of this application, in order to dissipate heat from the electronic control board 150, such as... Figure 5 and Figure 14 As shown, the control board 150 is connected to a heat sink 170. One end of the heat sink 170 is connected to the side of the control board 150 facing the bottom wall of the box 120, and the other end of the heat sink 170 is located outside the box 120. The heat sink 170 exchanges heat with the air outside the box 120 so that the air can carry away the heat transferred from the control board 150 to the heat sink 170, thereby dissipating heat from the control board 150.

[0078] like Figure 7 As shown, the bottom wall of the housing 120 is provided with a through portion 104, which communicates with the interior of the housing 120 so that the end of the heat sink 170 away from the control board 150 can be disposed outside the housing 120 through the through portion 104. The mounting bracket 1100 is provided with a first through portion, through which the end of the heat sink 170 located inside the housing 120 passes and connects to the control board 150.

[0079] The heat generated when the control board 150 is working causes the air temperature inside the box 120 to be high, while the air temperature outside the box 120 is low, resulting in a low temperature of the bottom wall of the box 120. When the air inside the box 120 comes into contact with the bottom wall of the box 120, condensation is generated on the bottom wall of the box 120. The condensation can easily come into contact with the control board 150 and damage the control board 150.

[0080] Based on this, in some embodiments of this application, a partition 190 is provided inside the box 120 to isolate the air inside the box 120 from the bottom wall of the box 120, so as to avoid the high temperature air inside the box 120 coming into contact with the low temperature bottom wall of the box 120 and causing condensation.

[0081] Specifically, such as Figure 14 As shown, the electrical box 100 includes a partition 190, which is located inside the box body 120. The partition 190 is in contact with the bottom wall of the box body 120. The side of the partition 190 away from the bottom wall of the box body 120 is connected to the mounting bracket 1100. The partition 190 is provided with a second passage 192 for the radiator 170 to pass through, so that the radiator 170 passes through the second passage 192. The passage 104 is located outside the box body 120.

[0082] like Figure 16 As shown, the partition 190 includes a partition body 191, which is disposed opposite to the bottom wall of the box 120 along the thickness direction of the box 120; the mounting bracket 1100 is installed on the side of the partition body 191 facing the first opening by fasteners. It should be noted that in some embodiments, the fasteners are waterproof rivets to increase the sealing of the electrical box 100.

[0083] like Figure 15 and Figure 16As shown, the partition 190 includes a fourth flange 193, which is disposed on the outer periphery of the partition body 191 and faces the bottom surface of the box 120, so that there is a certain distance between the partition body 191 and the bottom wall of the box 120. This allows the partition 190 and the bottom wall of the box 120 to jointly define an insulation cavity 105, thereby reducing the temperature transfer effect between the partition body 191 and the bottom wall of the box 120. This further increases the isolation effect between the air inside the box 120 and the bottom wall of the box 120, and increases the anti-condensation performance of the electrical box 100.

[0084] like Figure 16 As shown, the partition 190 includes a fifth flange 194, which is disposed on the partition body 191. The fifth flange 194 is located at the edge of the second passage 192 and is disposed towards the bottom surface of the box 120. On the one hand, it can guide the radiator 170 through the second passage 192, and on the other hand, it can prevent the edge of the second passage 192 from scratching the radiator 170.

[0085] In some embodiments, the second passage portion 192 is a port provided on the partition body 191.

[0086] like Figure 15 As shown, the box body 120 is provided with a sixth flange 125. The sixth flange 125 is located on the edge of the through part 104. The sixth flange 125 is set towards the outside of the box body 120. On the one hand, it can guide the heat sink 170 through the through part 104, and on the other hand, it can prevent the edge of the through part 104 from scratching the heat sink 170.

[0087] In some embodiments, the through portion 104 is an opening provided on the bottom wall of the housing 120.

[0088] The partition 190 covers the through portion 104 on the orthographic projection of the bottom surface of the box 120, so that the partition 190 can effectively block the through portion 104, preventing moisture, dust and other substances from directly entering the box 120 from the through portion 104, thereby increasing the sealing effect of the partition 190 on the through portion 104 and thus increasing the sealing performance of the electrical box 100.

[0089] In some embodiments, the partition 190 is a sheet metal part.

[0090] Because the airflow through the radiator 170 is relatively slow, when the electronic control board 150 generates a lot of heat, the radiator 170 cannot adequately meet the heat dissipation requirements of the electronic control board 150. Therefore, in some embodiments of this application, such as... Figure 18 and Figure 19As shown, by setting an air duct component 130 outside the box 120, the air duct component 130 and the bottom wall of the box 120 together define a heat dissipation air duct 102, and a drive fan 160 is set on the air duct component 130 to increase the speed of airflow through the heat sink 170, thereby increasing the heat dissipation effect of the heat sink 170.

[0091] Specifically, such as Figure 18 As shown, the electrical box 100 includes an air duct component 130, which is located outside the box body 120. The air duct component 130 is connected to the bottom wall of the box body 120, and the air duct component 130 and the box body 120 together define a heat dissipation air duct 102 with one end open. The heat sink 170 is located inside the heat dissipation air duct 102. A drive fan 160 is installed on the air duct component 130, with the air intake side of the drive fan 160 facing the heat dissipation air duct 102 and the air outlet side of the drive fan 160 facing the outside of the heat dissipation air duct 102.

[0092] like Figure 19 As shown, by driving the fan 160 to operate, air enters the cooling duct 102 through the opening of the cooling duct 102, comes into contact with the heat sink 170, and then flows out of the cooling duct 102 after passing through the fan 160.

[0093] like Figure 20 As shown, the air duct component 130 is provided with a mounting port 106, which communicates with the heat dissipation air duct 102; the drive fan 160 is installed at the mounting port 106. It should be noted that the orthographic projection of the air duct component 130 on the bottom surface of the housing 120 covers the through portion 104, so that the air duct component 130 seals the through portion 104, thereby preventing moisture, dust or flames from coming into contact with components such as the electronic control board 150 through the through portion 104 and causing adverse consequences.

[0094] like Figure 20 and Figure 21 As shown, the outer periphery of the air duct component 130 is provided with a third flange 131. The third flange 131 is located on the outer side of the heat dissipation air duct 102 and contacts the outer surface of the bottom wall of the box body 120. This not only increases the contact area between the air duct component 130 and the box body 120, thereby increasing the firmness of the connection between the air duct component 130 and the box body 120, but also seals the contact gap between the air duct component 130 and the box body 120, thereby sealing the heat dissipation air duct 102, preventing air leakage in the heat dissipation air duct 102, and ensuring the airflow in the heat dissipation air duct 102. This allows the radiator 170 to fully contact the air for heat exchange, thereby increasing the heat dissipation effect of the radiator 170. At the same time, it also reduces the entry of external dust and other impurities into the heat dissipation air duct 102, ensuring the cleanliness of the heat dissipation air duct 102, and thus ensuring the heat dissipation effect of the radiator 170.

[0095] In some embodiments, the third flange 131 is connected to the bottom wall of the box body 120 by waterproof rivets.

[0096] like Figure 20 and Figure 21 As shown, a hook 132 is provided on the third flange 131, and a second card inlet is provided on the bottom wall of the box body 120. The second card inlet is used for the hook 132 to be inserted so that the air duct component 130 is connected to the bottom wall of the box body 120.

[0097] like Figure 21 As shown, the air duct component 130 includes a first connector 133, which together with the housing 120 defines an air inlet section, and one end of the first connector 133 together with the housing 120 defines an opening for a heat dissipation air duct 102.

[0098] like Figure 21 As shown, the air duct component 130 includes a second connector 134, which is connected to the end of the first connector 133 away from the opening of the heat dissipation air duct 102; the end of the second connector 134 away from the first connector 133 is connected to the bottom wall of the housing 120; the mounting port 106 is provided on the second connector 134, and the second connector 134 and the housing 120 together define an air outlet section; the air inlet section and the air outlet section are interconnected to form the heat dissipation air duct 102.

[0099] It should be noted that the outer periphery of the first connector 133 and the second connector 134 are respectively provided with a third flange 131, so that the first connector 133 and the second connector 134 are respectively connected to the bottom wall of the box body 120 through the third flange 131.

[0100] In some embodiments, the first connector 133 and the second connector 134 are made from the same metal sheet through bending, cutting and other processing.

[0101] like Figure 22 As shown, the first connector 133 has a first side surface 1331, which is opposite to the bottom surface of the housing 120. The second connector 134 has a second side surface 1341, which is opposite to the bottom surface of the housing 120. The distance from the side of the first side surface 1331 closest to the second side surface 1341 to the bottom surface of the housing 120 is less than the distance of the second side surface 1341 relative to the bottom surface of the housing 120, so as to form a step on the air duct 130.

[0102] like Figure 23 As shown, when the electrical box 100 is tilted, the sharp corner of the step contacts the ground or the casing 200 to support the electrical box 100 and prevent the air duct component 130 from damaging the radiator 170.

[0103] like Figure 24As shown, the distance between the first side surface 1331 and the bottom surface of the box 120 is L1, and the height of the end of the radiator 170 facing the opening of the heat dissipation duct 102 protruding above the bottom surface of the box 120 is L2. Where L1-L2≥3mm and L1-L2≤5mm, this ensures that air can pass fully through the radiator 170, guaranteeing the heat exchange efficiency between the air and the radiator 170, while also preventing noise generation within the heat dissipation duct 102. It should be noted that the difference between L1 and L2 is also the distance from the end of the radiator 170 furthest from the box 120 to the first side surface 1331.

[0104] When the difference between L1 and L2 is less than 3mm, such as Figure 25 As shown, a narrow gap will form at point A, causing abnormal noise. On the other hand, if the gap at point A is too small, the air duct component 130 may easily damage the radiator 170 during production and assembly.

[0105] When the difference between L1 and L2 is greater than 5mm, the gap at point A is too large, and air can easily enter the drive fan 160 directly without passing through the heat sink 170 and output the cooling airflow 102.

[0106] The second connector 134 is provided with a connecting portion 1342, which is located at the connection between the second connector 134 and the first connector 133; the connecting portion 1342 is used to connect the first side 1331 and the second side 1341.

[0107] The distance D from the end of the radiator 170 facing the opening of the heat dissipation duct 102 to the connection part 1342 satisfies: D≥3mm, D≤5mm, so that air can pass through the radiator 170 fully, ensuring the heat exchange efficiency between the air and the radiator 170, and at the same time avoiding noise generated in the heat dissipation duct 102.

[0108] If D is less than 3mm, such as Figure 25 As shown, a narrow gap will form at point A, causing abnormal noise. On the other hand, if the gap at point A is too small, the air duct component 130 may easily damage the radiator 170 during production and assembly.

[0109] If D is greater than 5mm, the gap at point A is too large, and air can easily enter the drive fan 160 directly without passing through the heat sink 170 and output the cooling airflow 102.

[0110] In some embodiments, two drive fans 160 are provided, and the two drive fans 160 are set independently to increase the airflow speed, thereby increasing the heat dissipation effect of the heat sink 170.

[0111] Correspondingly, there are two mounting ports 106, and each of the two mounting ports 106 corresponds to one of the two drive fans 160.

[0112] Furthermore, the two mounting ports 106 are arranged along the width direction of the housing 120.

[0113] like Figure 24 As shown, a first plane 107 is defined, which is parallel to the width direction of the box 120 and perpendicular to the bottom wall of the box 120.

[0114] Define a second plane 161, which passes through the rotation axis of the driving fan 160 and is parallel to the width direction of the housing 120.

[0115] The second plane 161 and the first plane 107 are defined by an included angle α, which satisfies: α≥25°, α≤60°, in order to ensure the smooth flow of air in the heat dissipation duct 102, optimize the airflow distribution in the heat dissipation duct 102, and increase the heat dissipation effect of the radiator 170.

[0116] If α < 25°, the inclination of the second plane 161 and the first plane 107 is too small, which will result in the effective angle between the airflow direction of the drive fan 160 and the heat dissipation surface of the radiator 170 being too narrow. On the one hand, this will increase the flow resistance of the airflow in the heat dissipation duct 102, and some airflow will easily form vortices or stagnant areas in the heat dissipation duct 102, failing to fully contact the radiator 170, resulting in a decrease in heat dissipation efficiency. On the other hand, due to the low matching degree between the airflow direction and the effective heat dissipation surface of the radiator 170, a large amount of airflow may not fully absorb the heat of the radiator 170 before flowing directly out from the mounting port 106, causing heat to accumulate in the heat dissipation duct 102. The heat may be transferred to the inside of the box 120 through the bottom wall of the box 120, further causing the temperature inside the box 120 to rise, resulting in the performance degradation or damage of the control board 150 due to overheating.

[0117] If α > 60°, the inclination of the second plane 161 and the first plane 107 is too large. When the drive fan 160 draws air from the heat dissipation duct 102 through the mounting port 106, it is easy to form an asymmetrical airflow field. This causes the airflow velocity on the side of the heat dissipation duct 102 close to the drive fan 160 to be too fast, while the airflow velocity on the side far from the drive fan 160 is significantly reduced. In some cases, the airflow "short-circuit" phenomenon occurs, causing some air to flow directly from the opening of the heat dissipation duct 102 to the mounting port 106 without passing through the core heat dissipation area of ​​the radiator 170. This makes it impossible to effectively remove the heat from the radiator 170.

[0118] The side of the air duct component 130 opposite to the opening of the heat dissipation air duct 102 is a first inclined surface 1301. The first inclined surface 1301 is inclined towards the opening of the heat dissipation air duct 102 from the direction away from the housing 120. The mounting port 106 is provided on the first inclined surface 1301 to guide the airflow, so that the air heated by the radiator 170 can leave the heat dissipation air duct 102 better, reduce the airflow resistance and vortex phenomenon at the turning point of the heat dissipation air duct 102, reduce the operating load and noise of the drive fan 160, and improve the air output efficiency of the drive fan 160.

[0119] The airflow blown out by the driving fan 160 will first impact the first inclined surface 1301. According to the Coanda effect, this high-speed airflow will naturally "adhere" to the surface of the first inclined surface 1301 and be smoothly guided to the outside of the heat dissipation duct 102.

[0120] An angle β is formed between the first inclined surface 1301 and the bottom surface of the box 120. The angle β satisfies: β≥30°, β≤65°, so that the airflow can be stably and reliably attached to the first inclined surface 1301, and the Coanda effect is fully utilized to complete the airflow turning in the heat dissipation duct 102 and the output of the heat dissipation duct 102.

[0121] If β < 30°, the first slope 1301 is too gentle. Although airflow can easily adhere to it, it can also lead to an excessively long guide path for the airflow through the first slope 1301, increasing wind resistance and the size of the heat dissipation duct 102. Furthermore, it may not provide sufficient vertical force to effectively exhaust hot air.

[0122] If β > 65°, the first inclined plane 1301 is too steep, and the airflow is prone to separation when it impacts the inclined plane. The airflow will break away from the first inclined plane 1301, resulting in flow separation and vortices, which leads to increased wind resistance, increased noise, and decreased exhaust efficiency.

[0123] One end of the radiator 170 is positioned facing the opening of the heat dissipation duct 102, and the other end of the radiator 170 is positioned facing the mounting port 106; the end of the radiator 170 facing the mounting port 106 is provided with a second inclined surface that is compatible with the first inclined surface 1301.

[0124] like Figure 26 As shown, the radiator 170 includes multiple toothed plates, which are arranged along the width direction of the housing 120. The distance between adjacent toothed plates is S1. The toothed plates at both ends of the toothed plate arrangement direction are correspondingly arranged with the side walls of the air duct component 130 that are opposite to each other along the width direction of the housing. The distance from the toothed plate at the end to the side wall of the corresponding heat dissipation air duct 102 is S2. S1 and S2 satisfy: S1=S2, so that the gap between the toothed plates and the gap between the toothed plates and the side wall are the same, thereby making the airflow uniformly distributed.

[0125] It should be noted that the two side walls of the air duct component 130, which are arranged opposite each other along the width of the box, are also the two side walls of the heat dissipation air duct 102 arranged opposite each other along the width of the box.

[0126] It should be noted that, since the cooling fan 140 and the driving fan 160 operate independently, the airflow generated by the cooling fan 140 flows through the inside of the housing 120, while the airflow generated by the driving fan 160 flows through the outside of the housing 120. The airflow generated by the cooling fan 140 and the airflow generated by the driving fan 160 are isolated from each other by the bottom wall of the housing 120. In order to ensure the reliability of the two airflows and avoid mutual interference, the bottom wall of the housing 120 needs to have good sealing performance. However, since the bottom wall of the housing 120 has a through-hole 104, the airflow is easily mixed through the through-hole 104. The housing 120 has a partition 190 inside, which seals the through-hole 104, ensuring the reliability and orderliness of the airflow, thereby ensuring the heat dissipation effect of the cooling fan 140 and the driving fan 160.

[0127] In some embodiments of this application, the operation of the drive fan 160 and / or cooling fan 140 can be controlled according to the internal temperature of the housing 120, so as to dissipate the heat generated by the operation of the control board 150 in a timely manner, while avoiding resource waste.

[0128] When the temperature inside the housing 120 is high, the control fan 160 and the cooling fan 140 are operated simultaneously to increase the airflow speed through the radiator 170, thereby increasing the heat dissipation effect of the radiator 170; at the same time, the airflow is made to flow through the inside of the housing 120 to remove the heat inside the housing 120.

[0129] When the temperature inside the housing 120 is normal, the drive fan 160 or the cooling fan 140 is operated to increase the contact speed between the air and the heat sink 170, thereby increasing the heat dissipation effect of the heat sink 170 on the control board 150. Alternatively, airflow can be directed through the interior of the housing 120 to remove heat from inside the housing 120 and dissipate heat from the control board 150. When the temperature inside the housing 120 is low, the drive fan 160 and the cooling fan 140 can be shut down, and heat dissipation relies solely on the heat sink 170 exchanging heat with the air.

[0130] The aforementioned electrical box 100 extends its first end into the box body 120 and is pressed down by the limiting plate 121, so that the box body 120 limits and constrains the box cover 110, preventing the box cover 110 from separating from the box body 120 along the thickness direction of the box body 120; and the first flange 112 is provided on the outside of the box body 120, so that the first flange 112 wraps the edge of the first opening, thereby increasing the sealing effect of the box cover 110 on the first opening, thereby preventing flames, water vapor, insects, dust and the like from entering the interior of the box body 120 from the first opening, so that the electrical box 100 has good dustproof, waterproof and fireproof performance.

[0131] The aforementioned electrical box 100 has an air duct component 130 installed on the bottom wall of the box body 120, which together with the bottom wall of the box body 120 defines a heat dissipation air duct 102. A drive fan 160 is installed on the air duct component 130 to increase the speed of airflow through the radiator 170, thereby increasing the heat dissipation effect of the radiator 170.

[0132] The aforementioned electrical box 100 has a cooling fan 140 installed on the side wall opposite to the heat dissipation hole 201. The operation of the cooling fan 140 causes air to flow through the inside of the box 120, thereby allowing the air to dissipate heat from the control board 150.

[0133] The aforementioned electrical box 100, by providing a partition 190 inside the box body 120, forms a heat insulation cavity 105 together with the bottom wall of the box body 120. This isolates the high-temperature air inside the box body 120 from the bottom wall of the box body 120, preventing condensation from forming on the bottom wall of the box body 120 and giving the electrical box 100 good anti-condensation performance. Furthermore, the partition 190 seals the through portion 104, thereby effectively isolating the airflow generated by the cooling fan 140 from the airflow generated by the driving fan 160 on the bottom wall of the box body 120, preventing the two airflows from interfering with each other and affecting the heat dissipation effect.

[0134] Based on the aforementioned electrical box 100, this application also provides a water module. For example... Figures 27-29 As shown, the water module includes a housing 200, which forms the overall appearance of the water module. The top and bottom of the housing 200 are opposite ends, and the height of the housing 200 extends from the top to the bottom. The left and right sides of the housing 200 are opposite sides, and the length of the housing 200 extends from the left to the right. The front and rear sides of the housing 200 are opposite sides, and the thickness of the housing 200 extends from the front to the rear.

[0135] like Figure 27 As shown, an air inlet 201 is formed on the housing 200, and external air enters the housing 200 through the air inlet 201. Figure 28 As shown, a first air outlet 202 is formed on the housing 200. The first air outlet 202 is arranged opposite to the drive fan 160. The air outlet side of the drive fan 160 is arranged facing the first air outlet 202 so that the air in the heat dissipation duct 102 leaves the heat dissipation duct 102 after passing through the drive fan 160, and is then output to the inside of the housing 200 through the first air outlet 202.

[0136] like Figure 29 As shown, a second air outlet 203 is formed on the housing 200. The second air outlet 203 is arranged opposite to the cooling fan 140. The air outlet side of the cooling fan 140 is arranged facing the second air outlet 203 so that the air inside the housing 120 leaves the housing 120 after passing through the cooling fan 140, and is then output to the housing 200 through the second air outlet 203.

[0137] It should be noted that the air inlet 201, the first air outlet 202, and the second air outlet 203 are respectively located on different side walls of the housing 200 to prevent the air that has absorbed heat from re-entering the box 120 or the heat dissipation duct 102 to dissipate heat from the electronic control board 150.

[0138] In some embodiments, the air inlet 201 is located on the left side wall of the housing 200, the first air outlet 202 is located on the rear side wall of the housing 200, and the second air outlet 203 is located on the right side wall of the housing 200.

[0139] like Figure 29 As shown, the water module includes a compressor 300, which drives the refrigerant flow. The water module also includes a gas-liquid separator 400 connected to the inlet of the compressor 300 to prevent liquid refrigerant from flowing into the compressor 300. The water module includes a first heat exchanger 500 connected to the gas-liquid separator 400. The water module also includes a second heat exchanger 600, which, along with the compressor 300 and the first heat exchanger 500, forms a refrigerant circulation loop in which the refrigerant flows. The second heat exchanger 600 is connected to an inlet pipe and an outlet pipe to exchange heat with water, allowing it to output hot water.

[0140] In some embodiments, the first heat exchanger 500 is a plate heat exchanger. In some embodiments, the second heat exchanger 600 is a shell-and-tube heat exchanger.

[0141] In this application, the water module is a cascade type, and the water module includes multiple operating modes. In different operating modes, the refrigerant temperature flowing through the second heat exchanger 600 is different, resulting in different water temperatures after heat exchange with the second heat exchanger 600. The water after heat exchange with the second heat exchanger 600 can be either low-temperature hot water or high-temperature hot water. For ease of description, the operating modes of the water module are divided into low-temperature mode and high-temperature mode based on the water temperature after heat exchange with the second heat exchanger 600; when the water module operates in low-temperature mode, the water after heat exchange with the second heat exchanger 600 is low-temperature hot water; when the water module operates in high-temperature mode, the water after heat exchange with the second heat exchanger 600 is high-temperature hot water.

[0142] In some embodiments, the first heat exchanger 500 includes a first heating module that exchanges heat with the second heat exchanger 600. The first heat exchanger 500 also includes a second heating module that exchanges heat with the second heat exchanger 600 or with the first heating module.

[0143] When the water module operates in low-temperature mode, the second heating module exchanges heat with the second heat exchanger 600 to ensure that the water flowing out of the second heat exchanger 600 is low-temperature hot water. When the water module operates in high-temperature mode, the second heating module exchanges heat with the first heating module, and then the first heating module exchanges heat with the second heat exchanger 600 to ensure that the water flowing out of the second heat exchanger 600 is high-temperature hot water. It should be noted that when the water module operates in high-temperature mode, the second heating module does not exchange heat with the second heat exchanger 600. In some embodiments, the first heating module and the second heating module exchange heat via fluorine.

[0144] like Figure 28 and Figure 29 As shown, the water module includes an electrical box 100, which is installed inside the housing 200 and positioned near the top of the housing 200; one end of the electrical box 100 along its length is positioned towards the top of the housing 200, and the other end of the electrical box 100 along its length is positioned towards the bottom of the housing 200; the exhaust side of the drive fan 160 is positioned towards the first exhaust port 202, and the exhaust side of the cooling fan 140 is positioned towards the second exhaust port 203.

[0145] In some embodiments, the length of the electrical box 100 is arranged along the height of the housing 200, the thickness of the electrical box 100 is arranged along the thickness of the housing 200, and the width of the electrical box 100 is arranged along the width of the housing 200.

[0146] In the water module, the control board 150 integrates many high-power components, such as high-current IGBTs, high-power MCUs, and large-size power resistors. As a result, the control board 150 generates a lot of heat when the water module is running. The heat dissipation methods in related technologies cannot meet the heat dissipation requirements of the control board 150. Furthermore, the working environment of the water module is relatively complex, which places high demands on the sealing performance of the electrical box 100.

[0147] Based on this, in this application, by configuring the aforementioned electrical box 100 in the water module, the electrical box 100 is made to have good heat dissipation effect and good sealing performance, thereby meeting the requirements of the water module and ensuring the reliability of the water module's operation.

[0148] When air enters the housing 200 through the air inlet 201, the air inlet 201 may be blocked by lint. In some embodiments of this application, the speed, current and power information of the drive fan 160 and / or the cooling fan 140 can be determined by the program. If the power of the drive fan 160 and / or the cooling fan 140 increases for a long time and the heat dissipation efficiency is not high, the reverse dust removal function will be activated to blow away the obstruction at the air inlet 201 by blowing air.

[0149] It should be noted that since the cooling fan 140 and the driving fan 160 work independently, and the air blown out by the cooling fan 140 and the driving fan 160 is hot air, by setting the air inlet 201, the first air outlet 202 and the second air outlet 203 on different side walls of the casing 200, the hot air blown out by the driving fan 160 is prevented from being drawn into the box 120 for heat dissipation again under the action of the cooling fan 140, or the hot air blown out by the cooling fan 140 is prevented from being drawn into the heat dissipation duct 102 and coming into contact with the heat exchanger under the action of the driving fan 160.

[0150] like Figure 30 and Figure 32 As shown, when the fan 160 is running, the air outside the housing 200 enters the housing 200 through the air inlet 201, then enters the cooling duct 102 through the opening of the cooling duct 102 and comes into contact with the heat sink 170, carrying away the heat on the heat sink 170. Then it leaves the cooling duct 102 through the mounting port 106, and finally leaves the housing 200 through the first air outlet 202.

[0151] like Figure 31 As shown, when the cooling fan 140 is running, the air outside the casing 200 enters the casing 200 through the air inlet 201, then enters the box 120 through the heat dissipation hole 101, and after making full contact with the electronic control board 150, it carries away the heat generated by the electronic control board 150. Then it leaves the box 120 through the mounting hole 103, and finally leaves the casing 200 through the second air outlet 203.

[0152] It should be noted that the effective sealing of the through-part 104 by the partition 190 is a necessary condition to ensure that the electrical box 100 has good heat dissipation performance. If the airflow generated by the cooling fan 140 enters the heat dissipation duct 102 through the through-part 104, or the airflow generated by the drive fan 160 enters the box 120 through the through-part 104, it will disrupt the original flow path of the airflow, reduce the heat dissipation effect of the cooling fan 140 and the drive fan 160, and make the electrical box 100 unable to effectively meet the heat dissipation requirements of the control board 150.

[0153] It should be noted that the electrical box 100 can also be applied to other products, including but not limited to multi-split air conditioners and industrial dehumidifiers, and is not limited to water modules. The specific structure and operating principle of the water module are existing technologies in this field and will not be elaborated upon here.

[0154] The water module provided in this application can reliably realize cooling, heating and hot water supply functions, while effectively preventing dust, water vapor and flames from entering the electrical box 100, ensuring stable operation in complex environments and extending the service life of the equipment.

Claims

1. An electrical box, characterized in that, include: A box body, wherein the box body is provided with a first opening, and the first opening communicates with the interior of the box body; A lid, wherein the lid is provided at the first opening in an openable and closable manner; one end of the lid along its length is the first end; An electronic control board is disposed inside the housing; A first flange is provided on the box lid; the first flange extends along the outer periphery of the box lid; the first flange breaks at two corners at the first end to form clearance portions; A limiting plate is provided at one end of the box body along its length, and the limiting plate is located at the first opening; The first end extends into the box body and is located on the side of the limiting plate facing the inside of the box body. The first flange located at the first end is located inside the box body, and the first flange located in other areas of the box cover is located outside the box body.

2. The electrical box according to claim 1, characterized in that, The first flange located on one side of the clearance portion is disposed inside the box, and the first flange located on the other side of the clearance portion is disposed outside the box; A positioning plate is provided on the outside of the box body, and the positioning plate is connected to the limiting plate; the positioning plate cooperates with the first flange located outside the box body to position the distance by which the box lid extends into the box body.

3. The electrical box according to claim 2, characterized in that, The first opening is located on one side of the box body in the thickness direction, the length direction of the limiting plate is set along the width direction of the box body, and the two ends of the limiting plate in the length direction are respectively provided with positioning plates, the length direction of the positioning plates is set along the thickness direction of the box body.

4. The electrical box according to claim 1, characterized in that, The box body opening is provided with a second flange, which is disposed towards the inner side of the box body. A contact surface is formed on the side of the second flange facing the box lid, and the contact surface contacts the side of the box lid facing the inner side of the box body.

5. The electrical box according to claim 4, characterized in that, The lid has an insertion part on the side facing the inside of the box body, and the second flange has a mating part. The mating part is provided corresponding to the insertion part, and the insertion part is located inside the mating part to position the connection between the lid and the box body.

6. The electrical box according to claim 1, characterized in that, The side wall of the box body opposite to the first opening has a through-part, which communicates with the interior of the box body; the control board has a heat sink, which is located outside the box body through the through-part.

7. The electrical box according to claim 6, characterized in that, The box body is provided with an air duct component on its exterior. The air duct component is connected to the side wall of the box body where the through portion is located. The air duct component and the box body together define a heat dissipation air duct with one end open. The heat sink is located inside the heat dissipation air duct. The projection of the air duct component on the side wall of the box body where the through portion is located covers the through portion.

8. The electrical box according to claim 7, characterized in that, The outer periphery of the air duct component is provided with a third flange, which is located outside the heat dissipation air duct and contacts the side wall surface of the box body where the through portion is provided.

9. The electrical box according to claim 7, characterized in that, The air duct component is equipped with a drive fan, with the air inlet side of the drive fan facing the heat dissipation air duct and the air outlet side of the drive fan facing the outside of the heat dissipation air duct; by the operation of the drive fan, air enters the heat dissipation air duct through the opening of the heat dissipation air duct, comes into contact with the heat sink, and then flows out of the heat dissipation air duct through the drive fan.

10. A water module, characterized in that, include: A housing with an air vent for allowing air to enter and exit the housing. The electrical box as described in any one of claims 1-9, wherein the electrical box is installed inside the housing and disposed near the top of the housing; one end of the electrical box in the length direction is disposed toward the top of the housing, and the other end of the electrical box in the length direction is disposed toward the bottom of the housing.

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