Power regulation equipment and power regulation system

Abstract

The utility model provides a power conditioning apparatus and a power conditioning system. The power regulation equipment comprises a sealed cabinet, a heat exchanger, a fan unit and a transformer, and the transformer comprises a coil assembly and an air duct; the sealed cabinet comprises a first chamber and a second chamber, the coil assembly and the air duct are located in the first chamber, and at least part of the coil assembly is located in the air duct; the fan unit is located in the second cavity, and at least part of the heat exchanger is located in the second cavity. A common cavity wall, a first ventilation opening and a second ventilation opening are arranged between the first cavity and the second cavity, and the first ventilation opening and the second ventilation opening are located on the two opposite sides of the common cavity wall respectively; an air outlet of the fan unit communicates with the first ventilation opening, the first ventilation opening communicates with the first end of the air guide barrel, the second end of the air guide barrel communicates with the second ventilation opening, the second ventilation opening communicates with an air inlet of the heat exchanger, and an air outlet of the heat exchanger communicates with an air inlet of the fan unit.

Description

Technical Field

[0001] This application relates to the field of power equipment technology, and in particular to a power regulation device and a power regulation system. Background Technology

[0002] Currently, power conditioning equipment, including transformers, typically uses external air circulation cooling. A fan expels hot air generated by the transformer coils from inside the power conditioning equipment to the outside. Low-temperature air from outside enters the power conditioning equipment through its air inlet, thus cooling the coils. However, this low-temperature air may contain dust, water vapor, or other contaminants. If this air enters the power conditioning equipment, it may cause dust accumulation or corrosion of the electronic components, affecting the equipment's performance. Utility Model Content

[0003] In view of this, this application provides a power conditioning device that can isolate external air through a sealed cabinet and achieve cooling of the coil assembly without exchanging air with the external environment. This prevents external air from entering the sealed cabinet through airflow circulation, thus ensuring that the performance of the power conditioning device is protected from the influence of external environmental factors and allows it to operate stably for a long time.

[0004] This application provides a power regulation device, including a sealed cabinet, a heat exchanger, a fan unit, and a transformer. The transformer includes a coil assembly and a duct. The sealed cabinet includes a first chamber and a second chamber. The coil assembly and the duct are located in the first chamber, with at least a portion of the coil assembly located within the duct. The fan unit is located in the second chamber, and at least a portion of the heat exchanger is located in the second chamber. A common cavity wall, a first vent, and a second vent are provided between the first chamber and the second chamber, wherein the first vent and the second vent are located on opposite sides of the common cavity wall. The air outlet of the fan unit communicates with the first vent, the first vent communicates with a first end of the duct, the second end of the duct communicates with the second vent, the second vent communicates with the air inlet of the heat exchanger, and the air outlet of the heat exchanger communicates with the air inlet of the fan unit.

[0005] In some alternative embodiments, the coil assembly includes an exposed portion located outside the air duct, and the exposed portion is located at one end of the coil assembly near the second vent.

[0006] In some optional embodiments, a baffle plate is provided in the first chamber, and the first chamber is divided into a first sub-chamber and a second sub-chamber by the baffle plate. The first sub-chamber is connected to the first vent, and the second sub-chamber is connected to the second vent. The second end of the air guide tube is located in the second sub-chamber, and the first end of the air guide tube extends into the first sub-chamber through a through hole opened in the baffle plate.

[0007] In some optional embodiments, the coil assembly includes a first coil and a second coil, the first coil being sleeved outside the core of the transformer, the second coil being sleeved outside the first coil, and a first ventilation gap existing between the first coil and the second coil; the first coil includes a plurality of first sub-coils arranged along the axial direction of the first coil, and a second ventilation gap existing between two adjacent first sub-coils; the second coil includes a plurality of second sub-coils arranged along the axial direction of the second coil, and a third ventilation gap existing between two adjacent second sub-coils. It should be understood that the axial direction of the first coil is the extension direction of the central axis around which the first coil is wound, and the axial direction of the second coil is the extension direction of the central axis around which the second coil is wound.

[0008] In some optional embodiments, the heat exchanger includes an end cap, a heat exchange pipe, and heat exchange plates. The end cap is connected to the heat exchange pipe, and the heat exchange pipe is connected to the heat exchange plates. The heat exchange pipe and the heat exchange plates are located in the second chamber. The end cap is provided with an inlet and an outlet located outside the sealed cabinet, and the inlet and outlet are respectively connected to the heat exchange pipe.

[0009] In some alternative embodiments, the end cap is located outside the sealed cabinet, and the outer shell of the sealed cabinet has an installation port, through which the heat exchange pipe is connected to the end cap.

[0010] In some alternative embodiments, the heat exchanger is detachably connected to the sealed cabinet via the end cap.

[0011] In some optional embodiments, the outer shell of the sealed cabinet is provided with an access door, which is sealed to the outer shell by a first sealing strip.

[0012] In some alternative embodiments, the housing comprises multiple housing segments, which are fixed to the cabinet frame within the sealed cabinet by fasteners, the gap between two adjacent housing segments is sealed by a second sealing strip, and the spacing between the fasteners is less than 200 mm.

[0013] This application also provides a power regulation system, including a frequency converter and a power regulation device as described in any of the above embodiments, wherein the transformer of the power regulation device is connected to the frequency converter.

[0014] In this embodiment, the power regulating equipment includes a sealed cabinet, a heat exchanger, a fan unit, and a transformer. The transformer includes a coil assembly and a guide duct. The sealed cabinet includes a first chamber and a second chamber. The coil assembly and the guide duct are located in the first chamber, with at least a portion of the coil assembly located within the guide duct. The fan unit is located in the second chamber, and at least a portion of the heat exchanger is located in the second chamber. A common cavity wall, a first vent, and a second vent are provided between the first and second chambers, respectively located on opposite sides of the common cavity wall. The outlet of the fan unit communicates with the first vent, the first vent communicates with the first end of the guide duct, the second end of the guide duct communicates with the second vent, the second vent communicates with the inlet of the heat exchanger, and the outlet of the heat exchanger communicates with the inlet of the fan unit. Inside the sealed cabinet, driven by the fan unit, airflow flows through the first chamber, the guide duct within the first chamber, the second vent, the heat exchanger, the fan unit, and the first vent, forming a complete airflow circulation process. In this process, the airflow passes through the air guide duct in the first chamber, absorbing the heat generated by the coil assembly. The airflow then carries this heat to the heat exchanger, where it absorbs the heat from the airflow, thus cooling it. The cooled airflow is then transported back to the first chamber by the fan unit to begin the next cycle. This airflow circulation process is isolated from external air by a sealed cabinet. Furthermore, it achieves cooling of the coil assembly without requiring air exchange with the external environment. This prevents external air from entering the sealed cabinet through the airflow circulation, ensuring the power regulation equipment operates stably and reliably for a long period without being affected by external environmental factors. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a power regulation device provided in an optional embodiment of this application;

[0016] Figure 2 This is a cross-sectional schematic diagram of a power regulating device provided in an optional embodiment of this application;

[0017] Figure 3 This is a cross-sectional schematic diagram of a power regulating device provided in an optional embodiment of this application;

[0018] Figure 4 This is a cross-sectional schematic diagram of another power regulating device provided in an optional embodiment of this application;

[0019] Figure 5 This is a cross-sectional schematic diagram of another power regulating device provided in an optional embodiment of this application.

[0020] List of reference numerals in the attached diagram:

[0021] 100. Power regulation equipment; 110. Sealed cabinet; 111. First chamber

[0022] 1110, wind deflector; 1111, first sub-cavity; 1112, second sub-cavity

[0023] 1113, Outer shell 112, Second chamber 113, Common chamber wall

[0024] 114. First vent; 115. Second vent; 120. Heat exchanger

[0025] 121. End cap; 1211. Inlet end; 1212. Outlet end

[0026] 122, heat exchange fins; 123, connection hole; 130, fan unit.

[0027] 131. Air inlet of the fan unit; 132. Air outlet of the fan unit; 140. Coil assembly.

[0028] 141. Exposed part; 150. Air guide duct; 151. First end of air guide duct

[0029] 152. The second end of the air guide duct Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0031] In the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "joined," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0032] As mentioned earlier, existing power conditioning equipment, including transformers, typically uses external air circulation cooling. A fan exhausts the hot air generated by the internal coil components to the outside of the power conditioning equipment. The low-temperature air outside the power conditioning equipment enters through the air inlet, thereby cooling the coil components. However, the low-temperature air outside the power conditioning equipment may contain dust, water vapor, or other pollutants. This air entering the power conditioning equipment may cause dust accumulation or corrosion of the electronic components inside, affecting the performance of the power conditioning equipment.

[0033] In this embodiment, the power regulating equipment includes a sealed cabinet, a heat exchanger, a fan unit, and a transformer. The transformer includes a coil assembly and a guide duct. The sealed cabinet includes a first chamber and a second chamber. The coil assembly and the guide duct are located in the first chamber, with at least a portion of the coil assembly located within the guide duct. The fan unit is located in the second chamber, and at least a portion of the heat exchanger is located in the second chamber. A common cavity wall, a first vent, and a second vent are provided between the first and second chambers, respectively located on opposite sides of the common cavity wall. The outlet of the fan unit communicates with the first vent, the first vent communicates with the first end of the guide duct, the second end of the guide duct communicates with the second vent, the second vent communicates with the inlet of the heat exchanger, and the outlet of the heat exchanger communicates with the inlet of the fan unit. Inside the sealed cabinet, driven by the fan unit, airflow flows through the first chamber, the guide duct within the first chamber, the second vent, the heat exchanger, the fan unit, and the first vent, forming a complete airflow circulation process. In this process, the airflow passes through the air guide duct in the first chamber, absorbing the heat generated by the coil assembly. The airflow then carries this heat to the heat exchanger, where it absorbs the heat from the airflow, thus cooling it. The cooled airflow is then transported back to the first chamber by the fan unit to begin the next cycle. This airflow circulation process is isolated from external air by a sealed cabinet. Furthermore, it achieves cooling of the coil assembly without requiring air exchange with the external environment. This prevents external air from entering the sealed cabinet through the airflow circulation, ensuring the power regulation equipment operates stably and reliably for a long period without being affected by external environmental factors.

[0034] The power regulation device provided in this application example will be described below with reference to the accompanying drawings. It should be noted that the various drawings in this application are only for the purpose of illustration and understanding of this embodiment, and are not intended to limit this application in any way, and are not necessarily drawn to scale.

[0035] like Figures 1-3 As shown in the figure, this application provides a power regulation device 100, including a sealed cabinet 110, a heat exchanger 120, a fan unit 130 and a transformer, the transformer including a coil assembly 140 and a wind duct 150.

[0036] The sealed enclosure 110 includes a sealed housing 1113, thereby forming a sealed chamber within the housing 1113. The heat exchanger 120 can be a water-cooled heat exchanger 120, which removes heat from the sealed chamber by circulating water with the outside of the sealed chamber. Alternatively, the heat exchanger 120 can also be an electrically driven heat exchanger 120, which, exemplarily, may include temperature control units such as a thermoelectric cooler (TEC) and heating wires. The fan unit 130 may include one or more fans to drive airflow within the heat exchange chamber, forming a circulating airflow. The transformer may also include an iron core, with a coil assembly 140 sleeved around the iron core.

[0037] The sealed cabinet 110 includes a first chamber 111 and a second chamber 112. The transformer can be located in the first chamber 111, that is, the coil assembly 140 and the air duct 150 are located in the first chamber 111. At least a portion of the coil assembly 140 is located inside the air duct 150, and a gap can exist between the wall of the air duct 150 and the coil assembly 140 to allow airflow to absorb heat from the side of the coil assembly 140 near the wall of the air duct 150. The fan unit 130 is located in the second chamber 112, and the heat exchanger 120 is at least partially located in the second chamber 112. That is, the heat exchanger 120 can be partially located in the second chamber 112 or entirely located in the second chamber 112. For example, the aforementioned water-cooled heat exchanger 120 can be partially located in the second chamber 112, and the aforementioned electric-driven heat exchanger 120 can be entirely located in the second chamber 112.

[0038] like Figure 2 and Figure 3 As shown, a common cavity wall 113, a first ventilation opening 114, and a second ventilation opening 115 are provided between the first chamber 111 and the second chamber 112, wherein the first ventilation opening 114 and the second ventilation opening 115 are located on opposite sides of the common cavity wall 113. The opposite sides of the common cavity wall 113 can be a first side and a second side, with the first ventilation opening 114 located on the first side of the common cavity wall 113 and the second ventilation opening 115 located on the second side of the common cavity wall 113. For example, as... Figure 3 As shown, the first and second sides of the common cavity wall 113 can be the upper and lower sides, respectively. The first vent 114 is an opening on the upper side of the common cavity wall 113, and the second vent 115 is an opening on the lower side of the common cavity wall 113. It should be understood that the first vent 114 and the second vent 115 can be located directly on the common cavity wall 113, or the first vent 114 and the second vent 115 can also be located outside the common cavity wall 113 and adjacent to the side of the common cavity wall 113.

[0039] The air outlet 132 of the fan unit 130 is connected to the first vent 114. The first vent 114 is connected to the first end 151 of the air guide duct 150. The second end 152 of the air guide duct 150 is connected to the second vent 115. The second vent 115 is connected to the air inlet of the heat exchanger 120. The air outlet of the heat exchanger 120 is connected to the air inlet 131 of the fan unit 130. That is, the air outlet 132 of the fan unit 130, the first vent 114, the first end 151 of the air guide duct 150, the second end 152 of the air guide duct 150, the second vent 115, the air inlet of the heat exchanger 120, the air outlet of the heat exchanger 120, and the air inlet 131 of the fan unit 130 can be connected in sequence to form an airflow channel passing through the fan unit 130, the second chamber 112, the air guide duct 150 and the heat exchanger 120 in the second chamber 112.

[0040] It should be understood that the connection in the embodiments of this application can be a direct connection or an indirect connection, such as an indirect connection through the indoor space in the first chamber 111 or the second chamber 112, or an indirect connection through a dedicated connection channel or connection pipeline. Unless otherwise specified, the embodiments of this application do not limit the specific method of connection. In some optional embodiments, the air outlet 132 of the fan unit 130 is connected to the first vent 114 through the chamber space of the second chamber 112. The first vent 114 is connected to the first end 151 of the air guide duct 150 through the chamber space of the second chamber 112. The second end 152 of the air guide duct 150 is connected to the second vent 115 through the chamber space of the second chamber 112. The second vent 115 is directly connected to the air inlet of the heat exchanger 120. A connecting channel is provided between the air outlet of the heat exchanger 120 and the air inlet 131 of the fan unit 130. The air outlet of the heat exchanger 120 is connected to the air inlet 131 of the fan unit 130 through this connecting channel.

[0041] In this embodiment, the power regulating device 100 includes a sealed cabinet 110, a heat exchanger 120, a fan unit 130, and a transformer. The transformer includes a coil assembly 140 and a duct 150. The sealed cabinet 110 includes a first chamber 111 and a second chamber 112. The coil assembly 140 and the duct 150 are located in the first chamber 111, and at least a portion of the coil assembly 140 is located inside the duct 150. The fan unit 130 is located in the second chamber 112, and at least a portion of the heat exchanger 120 is located in the second chamber 112. A common cavity wall 113, a first vent 114, and a second vent 115 are provided between the first chamber 111 and the second chamber 112, wherein the first vent 114 and the second vent 115 are located on opposite sides of the common cavity wall 113. The air outlet 132 of the fan unit 130 is connected to the first vent 114, the first vent 114 is connected to the first end 151 of the air guide duct 150, the second end 152 of the air guide duct 150 is connected to the second vent 115, the second vent 115 is connected to the air inlet of the heat exchanger 120, and the air outlet of the heat exchanger 120 is connected to the air inlet 131 of the fan unit 130. Inside the sealed cabinet 110, driven by the fan unit 130, airflow flows through the first chamber 111, the air guide duct 150 within the first chamber 111, the second vent 115, the heat exchanger 120, the fan unit 130, and the first vent 114, forming a complete airflow circulation process. In this process, the airflow passes through the air guide duct 150 in the first chamber 111, absorbing the heat generated by the coil assembly 140. The airflow then carries this heat to the heat exchanger 120, where it absorbs the heat from the airflow, thus cooling it. The cooled airflow is then transported back to the first chamber 111 via the fan unit 130 to begin the next cycle. This airflow circulation process is isolated from external air by the sealed cabinet 110. Furthermore, by achieving cooling of the coil assembly 140, no air exchange with the external environment is required. This prevents external air from entering the sealed cabinet 110 through the airflow circulation, ensuring the power regulating equipment 100 operates stably and for a long time without being affected by external environmental factors.

[0042] In some alternative embodiments, the coil assembly 140 includes a first coil and a second coil. The first coil is sleeved outside the transformer core, and the second coil is sleeved outside the first coil. A first ventilation gap exists between the first coil and the second coil. Exemplarily, the first coil and the second coil can be a primary coil and a secondary coil, respectively. Of course, the coil assembly 140 may also include other coils besides the first and second coils. This application does not limit the number of coils included in the coil assembly 140.

[0043] This embodiment of the application sets a first ventilation gap between the first coil and the second coil, which can form an airflow channel between the first coil and the second coil, significantly increasing the surface area of ​​the first coil and the second coil in contact with the air. This allows the cold airflow entering the first chamber 111 from the first ventilation port 114 to fully absorb the heat generated by the first coil and the second coil through the first ventilation gap, thereby improving the efficiency of the cooling coil assembly 140.

[0044] In some optional embodiments, the first coil includes a plurality of first sub-coils arranged along the axial direction of the first coil, with a second ventilation gap between adjacent first sub-coils; the second coil includes a plurality of second sub-coils arranged along the axial direction of the second coil, with a third ventilation gap between adjacent second sub-coils. By providing the second and third ventilation gaps, the surface area of ​​the first and second coils in contact with air can be further increased, allowing the cold airflow entering the first chamber 111 to more efficiently absorb the heat generated by the first and second coils, further improving the efficiency of the cooling coil assembly 140.

[0045] like Figure 4 As shown, in some alternative embodiments, the coil assembly 140 includes an exposed portion 141 located outside the air duct 150, and the exposed portion 141 is located at one end of the coil assembly 140 near the second vent 115. Exemplarily, the exposed portion 141 of the coil assembly 140 may occupy 1 / 3 of the entire coil assembly 140.

[0046] In this embodiment, by providing an exposed portion 141 at one end of the coil assembly 140 near the second vent 115, compared to the technical solution where the entire coil assembly 140 is located inside the air guide duct 150, the constraint of the air guide duct 150 on the airflow at the second end of the coil assembly 140 can be reduced or eliminated. This allows the airflow passing through the air guide duct 150 to diffuse in the exposed portion 141 at the second end of the coil assembly 140. As the airflow through the coil assembly 140 moves toward the second vent 115, it can fully cover the opening range of the second vent 115, thereby uniformly entering the heat exchanger 120 that communicates with the second vent 115. This avoids the airflow from concentrating in a portion of the second vent 115 and the heat exchanger 120, thus improving the cooling efficiency of the heat exchanger 120.

[0047] like Figures 2-4As shown, in some optional embodiments, a baffle plate 1110 is provided in the first chamber 111, dividing the first chamber 111 into a first sub-chamber 1111 and a second sub-chamber 1112. The first sub-chamber 1111 communicates with the first vent 114, and the second sub-chamber 1112 communicates with the second vent 115. The second end 152 of the air guide duct 150 is located in the second sub-chamber 1112, and the first end 151 of the air guide duct 150 extends into the first sub-chamber 1111 through a through hole opened on the baffle plate 1110. The size of the through hole can be slightly larger than the outer diameter of the air guide duct 150 to facilitate the passage of the air guide duct 150, or the size of the through hole can be equal to the outer diameter of the air guide duct 150 so that the hole wall / baffle plate 1110 fits against the outer surface of the air guide duct 150, preventing airflow from entering the second sub-chamber 1112 through the gap between the baffle plate 1110 and the air guide duct 150.

[0048] In this embodiment, a baffle plate 1110 is provided inside the first chamber 111, dividing the first chamber 111 into a first sub-chamber 1111 and a second sub-chamber 1112. The first sub-chamber 1111 communicates with the first vent 114, and the second sub-chamber 1112 communicates with the second vent 115. The second end 152 of the air guide duct 150 is located in the second sub-chamber 1112, and the first end 151 of the air guide duct 150 extends into the first sub-chamber 1111 through a through hole in the baffle plate 1110. This allows the cold airflow entering the first chamber 111 through the first vent 114 to fill the first sub-chamber 1111, and then flow to the second sub-chamber 1112 through the second end 152 of the air duct 150. This allows the cold airflow to converge in the air duct 150 to cool the coil assembly 140 in the air duct 150, preventing the cold airflow from bypassing the coil assembly 140 and entering the second vent 115, thereby fully utilizing the cooling effect of the cold airflow on the coil assembly 140.

[0049] like Figure 2 and Figure 5 As shown, in some optional embodiments, the heat exchanger 120 includes an end cap 121, heat exchange pipes (not shown), and heat exchange plates 122. The end cap 121 is connected to the heat exchange pipes, and the heat exchange pipes are connected to the heat exchange plates 122. There can be multiple heat exchange pipes and heat exchange plates 122. Each heat exchange pipe can pass vertically through each heat exchange plate 122 through a connection hole 123 on the heat exchange plate 122. The connection hole 123 on the heat exchange plate 122 can be referenced... Figure 2 As shown. The heat exchange pipe can be connected at a position that contacts the heat exchange plate 122. For example, the heat exchange pipe can be connected to the heat exchange plate 122 by expansion joint, or by welding or other suitable methods.

[0050] The heat exchange pipes and heat exchange plates 122 are located inside the second chamber 112. The end cover 121 is equipped with an inlet end 1211 and an outlet end 1212 located outside the sealed cabinet 110, and both the inlet end 1211 and the outlet end 1212 are connected to the heat exchange pipes. The heat exchange pipes may include an inlet pipe and a return pipe. The inlet end 1211 is connected to the inlet pipe, the inlet pipe is connected to the return pipe, and the return pipe is connected to the outlet end 1212, forming a water flow path. The inlet end 1211 and the outlet end 1212 can be connected to an external pipe loop, which may be connected to a water supply device such as a water pump. Specific details regarding the configuration of the pipe loop can be found in relevant technical documents and will not be elaborated here.

[0051] Cold water can be introduced into the heat exchange pipe through the water inlet 1211. The cold water cools the heat exchange pipe and heat exchange fins 122, thereby cooling the hot airflow entering the heat exchanger 120 from the air inlet. This results in cold airflow being output from the air outlet of the heat exchanger 120. In this embodiment, the cooling of the hot airflow is achieved through water cooling, which can significantly reduce the noise generated by the heat exchanger 120 and help maintain the comfort of the environment in which the power regulating equipment 100 is located. The fan unit 130 can draw in the cold airflow output from the air outlet of the heat exchanger 120 and deliver the cold airflow to the first vent 114, allowing the cold airflow to enter the first chamber 111 from the first vent 114, thereby cooling the coil assembly 140 inside the first chamber 111.

[0052] In this embodiment, the heat exchanger 120 includes an end cap 121, a heat exchange pipe, and heat exchange plates 122. The end cap 121 is connected to the heat exchange pipe, and the heat exchange pipe is connected to the heat exchange plates 122. The heat exchange pipe and heat exchange plates 122 are located inside the second chamber 112. The end cap 121 is provided with an inlet end 1211 and an outlet end 1212 located outside the sealed cabinet 110, and the inlet end 1211 and the outlet end 1212 are respectively connected to the heat exchange pipe. Cold water can be supplied to the heat exchange pipe inside the second chamber 112 through the inlet end 1211 and the outlet end 1212 outside the sealed cabinet 110. After the hot airflow enters the air inlet of the heat exchanger 120 through the second vent 115 of the first chamber 111, the heat of the hot airflow can be transferred to the cold water flow through the heat exchange pipe and the heat exchange plates 122. The cold water flow carries away the heat of the hot airflow, so that the air outlet of the heat exchanger 120 outputs cold airflow. Since the air outlet of the heat exchanger 120 is connected to the air inlet 131 of the fan unit 130, the fan unit 130 draws in the cold air output from the air outlet of the heat exchanger 120, and then discharges the cold air into the first chamber 111 through the first vent 114 to cool the coil assembly 140 in the first chamber 111. In addition, the embodiments of this application can also use the cold air entering the fan unit 130 to heat dissipate and protect the motor of the fan, thereby improving the service life of the fan.

[0053] like Figure 1 and 5 As shown, in some optional embodiments, the end cover 121 is located outside the sealed cabinet 110. An installation port is provided on the outer shell 1113 of the sealed cabinet 110, and the heat exchange pipes are connected to the end cover 121 through the installation port. The end cover 121 can be detachably connected to the outer shell 1113 of the sealed cabinet 110 using bolts or other connecting components, facilitating maintenance of the heat exchanger 120 by removing the end cover 121. A sealing strip or sealing ring or other sealing structure can be provided between the end cover 121 and the outer shell 1113 of the sealed cabinet 110, thereby sealing the installation port through the end cover 121 and the provided sealing structure.

[0054] In this embodiment, the end cover 121 is located outside the sealed cabinet 110. The outer shell 1113 of the sealed cabinet 110 has an installation port. The heat exchange pipe is connected to the end cover 121 through the installation port, so that the staff can perform maintenance on the heat exchanger 120 without opening the main body of the cabinet. This can significantly improve the maintenance efficiency of the heat exchanger 120. In addition, the staff can operate directly outside the sealed cabinet 110, avoiding the risk of exposure of the electronic components inside the power conditioning equipment 100, and can greatly reduce the maintenance cost of the heat exchanger 120.

[0055] In some optional embodiments, the heat exchanger 120 is detachably connected to the sealed cabinet 110 via an end cap 121. Optionally, the end cap 121 is detachably connected to the outer shell 1113 of the sealed cabinet 110, and the heat exchanger 120 is detachably connected to the sealed cabinet 110 via this detachable connection. The sealed cabinet 110 may be provided with a bracket for placing the heat exchanger 120, thereby ensuring the stability of the heat exchanger 120 after installation in the sealed cabinet 110. In other optional embodiments, other parts of the heat exchanger 120 can be connected to the bracket for placing the heat exchanger 120 via bolts or other fasteners to improve the stability of the heat exchanger 120.

[0056] In this embodiment, the heat exchanger 120 is detachably connected to the sealed cabinet 110 via an end cover 121. This allows the heat exchanger 120 to be removed from the sealed cabinet 110 after the end cover 121 is removed. This greatly facilitates the installation and removal of the heat exchanger 120 and improves the installation and maintenance efficiency of the heat exchanger 120.

[0057] In some optional embodiments, the outer shell 1113 of the sealed cabinet 110 is provided with an access door, which is sealed to the outer shell 1113 by a first sealing strip. The side of the access door can be bolted to the outer shell 1113 to facilitate opening and fixing of the access door.

[0058] The first sealing strip can be made of flexible materials such as rubber or silicone, allowing it to deform and tightly adhere to the outer shell 1113 of the sealed door and cabinet, thus ensuring its sealing effect. The first sealing strip can be installed on the access door or on the outer shell 1113 of the sealed cabinet 110, as long as the access door can be sealed through the first sealing strip to the corresponding door opening on the outer shell 1113 of the sealed cabinet 110. The first sealing strip can be arranged around the edge of the access door to form a closed sealing ring, thereby preventing gaps between the sealing strips from affecting their sealing effect.

[0059] In this embodiment, the sealed cabinet 110 also includes an access door disposed on the outer shell 1113. One side of the access door is hinged to the outer shell 1113 of the sealed cabinet 110, allowing the access door to rotate and open along a fixed axis. This allows personnel to expose the internal equipment without completely disassembling the door when opening the access door, significantly reducing the time spent operating the access door. A first sealing strip is provided on the side of the access door facing the inside of the sealed cabinet 110. The access door is sealed to the outer shell 1113 through the first sealing strip, ensuring a tight fit between the access door and the outer shell 1113. This seals the gap between the access door and the outer shell 1113, preventing dust or water vapor from entering the sealed cabinet 110 through the gap between the access door and the outer shell 1113.

[0060] like Figure 3 As shown, in some optional embodiments, the housing 1113 includes multiple housing segments, which are fixed to the cabinet frame inside the sealed cabinet 110 by fasteners. The fasteners can be detachable fasteners such as bolts or non-detachable fasteners such as anchors. The gap between two adjacent housing segments is sealed by a second sealing strip, and the spacing between the fasteners is less than 200mm.

[0061] The second sealing strip can be made of flexible materials such as rubber or silicone, so that the second sealing strip can fit tightly against the shell segment through the deformation of the flexible material, thereby ensuring the sealing effect of the second sealing strip. By setting the distance between the first sealing strip, the second sealing strip, and the fixing member to be less than 200mm, the sealing rating of the sealed cabinet 110 in this embodiment can reach IP55, which can effectively isolate dust, moisture, and other pollutants from the outside of the sealed cabinet 110 from entering the sealed cabinet 110.

[0062] In this embodiment, the outer shell 1113 of the sealed cabinet 110 comprises multiple shell segments, which can be assembled by splicing to form the outer shell 1113 of the sealed cabinet 110, reducing the manufacturing and installation difficulty of the outer shell 1113. The gap between two adjacent shell segments is sealed by a second sealing strip, and the spacing between the fasteners is less than 200mm. Based on sealing the gap between two adjacent shell segments with the second sealing strip, the dense arrangement of the fasteners with a spacing of less than 200mm increases the stability of the connection between the shell segments and the cabinet, reduces the risk of deformation of the shell segments due to vibration or external impact, and prevents the gap between two adjacent shell segments from widening due to deformation, thereby maintaining the reliability of the seal between the two shell segments.

[0063] This application also provides a power regulation system, including a frequency converter and the power regulation equipment described in any of the preceding embodiments, wherein the transformer of the power regulation equipment is connected to the frequency converter.

[0064] When the power regulation system is operating, the power regulation equipment can be connected to a power source, and the frequency converter can be connected to the load equipment (such as motors, water pumps, etc.). As a feasible implementation, the power source can be alternating current (AC). After the power is connected, the transformer in the power regulation equipment first reduces the input voltage to a voltage suitable for the frequency converter's operation, serving as a voltage reduction and isolation mechanism to protect the internal electronic components of the frequency converter from damage by high voltage. The frequency converter, through rectification, filtering, and inversion processes, adjusts the AC output from the transformer of the power regulation equipment to an output current that meets the requirements of the load equipment, thereby supplying power to the load equipment. The specific structure of the frequency converter can be found in relevant technical documents and will not be elaborated upon here.

[0065] The power regulation system provided in this application embodiment is based on the same inventive concept as the aforementioned power regulation equipment embodiment and can achieve the same effect. For the specific implementation process, please refer to the description in the aforementioned power regulation equipment embodiment, which will not be repeated here.

[0066] It should be noted that, in this patent application, nouns and pronouns referring to persons are not limited to specific genders. Relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The term "connection" can be a direct or indirect connection, and this application does not exclude the possibility of other components being connected between two connected components. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0067] Finally, it should be noted that the above are merely preferred embodiments of this application, used only to illustrate the technical solution of this application, and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A power conditioning device (100), characterized by, The sealed cabinet (110), the heat exchanger (120), the fan unit (130) and the transformer including a coil assembly (140) and a duct (150); The sealed cabinet (110) includes a first chamber (111) and a second chamber (112), the coil assembly (140) and the duct (150) are located in the first chamber (111), at least part of the coil assembly (140) is located in the duct (150); the fan unit (130) is located in the second chamber (112), and the heat exchanger (120) is at least partially located in the second chamber (112); The first chamber (111) and the second chamber (112) are provided with a shared cavity wall (113), a first air vent (114) and a second air vent (115), wherein the first air vent (114) and the second air vent (115) are located on opposite sides of the shared cavity wall (113) respectively; the air outlet (132) of the fan unit (130) communicates with the first air vent (114), the first air vent (114) communicates with the first end (151) of the duct (150), the second end (152) of the duct (150) communicates with the second air vent (115), the second air vent (115) communicates with the air inlet of the heat exchanger (120), and the air outlet of the heat exchanger (120) communicates with the air inlet (131) of the fan unit (130).

2. The power conditioning device (100) according to claim 1, characterized in that The coil assembly (140) includes an exposed part (141) located outside the duct (150), and the exposed part (141) is located at one end of the coil assembly (140) close to the second air vent (115).

3. The power conditioning device (100) according to claim 1 or 2, characterized in that A baffle (1110) is arranged in the first chamber (111), the first chamber (111) is divided into a first sub-chamber (1111) and a second sub-chamber (1112) by the baffle (1110), the first sub-chamber (1111) communicates with the first air vent (114), and the second sub-chamber (1112) communicates with the second air vent (115); The second end (152) of the duct (150) is located in the second sub-chamber (1112), and the first end (151) of the duct (150) extends into the first sub-chamber (1111) through a through hole formed in the baffle (1110).

4. The power conditioning device (100) according to claim 1 or 2, characterized in that The coil assembly (140) includes a first coil and a second coil, the first coil is sleeved outside the core of the transformer, the second coil is sleeved outside the first coil, and there is a first ventilation gap between the first coil and the second coil; The first coil includes a plurality of first sub-coils arranged in the axial direction of the first coil, there is a second ventilation gap between adjacent two first sub-coils, the second coil includes a plurality of second sub-coils arranged in the axial direction of the second coil, and there is a third ventilation gap between adjacent two second sub-coils.

5. The power conditioning device (100) according to claim 1 or 2, characterized in that The heat exchanger (120) comprises an end cover (121), a heat exchange pipeline and heat exchange fins (122), the end cover (121) is connected with the heat exchange pipeline, and the heat exchange pipeline is connected with the heat exchange fins (122); The heat exchange pipeline and the heat exchange fins (122) are located in the second chamber (112), the end cover (121) is provided with a water inlet end (1211) and a water outlet end (1212) located outside the sealed cabinet (110), and the water inlet end (1211) and the water outlet end (1212) are respectively communicated with the heat exchange pipeline.

6. The power conditioning device (100) according to claim 5, characterized in that The end cover (121) is located outside the sealed cabinet (110), the outer shell (1113) of the sealed cabinet (110) is provided with a mounting port, and the heat exchange pipeline is connected with the end cover (121) through the mounting port.

7. The power conditioning device (100) according to claim 6, characterized in that The heat exchanger (120) is detachably connected with the sealed cabinet (110) through the end cover (121).

8. The power conditioning device (100) according to claim 1 or 2, characterized in that The outer shell (1113) of the sealed cabinet (110) is provided with an access door, and the access door is sealingly matched with the outer shell (1113) through a first sealing strip.

9. The power conditioning device (100) according to claim 7, characterized in that The outer shell (1113) comprises a plurality of shell segments, the shell segments are fixed on a cabinet frame in the sealed cabinet (110) through fixing members, the gap between adjacent two shell segments is sealed through a second sealing strip, and the spacing between the fixing members is less than 200mm.

10. A power conditioning system characterized by, The power regulating device (100) comprises a frequency converter and a transformer, and the transformer of the power regulating device (100) is connected with the frequency converter.

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