Frequency conversion all-in-one machine with semi-open heat dissipation structure

Abstract

The utility model relates to the technical field of frequency conversion equipment, in particular to a frequency conversion all-in-one machine with a semi-open heat dissipation structure, which comprises a casing, a circuit board fixed in the casing, a radiator and a fan, the front surface of the casing is provided with an installation port, the installation port is detachably and fixedly connected with a casing cover, and the back surface of the casing is concaved inwards to form a heat dissipation groove. The bottom face of the heat dissipation groove is provided with a heat dissipation opening communicated with the interior of the machine shell, the bottom face of the heat dissipation device covers the heat dissipation opening in a buckled mode and is fixedly connected with the bottom face of the heat dissipation groove, the circuit board comprises an inversion module, the inversion module and the heat dissipation opening are oppositely arranged and fixedly connected with the bottom face of the heat dissipation device in an attached mode, and the fan is fixed to the top face of the heat dissipation device in an attached mode. At least one side of the machine shell is provided with heat dissipation holes communicated with the heat dissipation grooves. The frequency conversion all-in-one machine adopts a semi-open heat dissipation structure, so that the installation is simple and fast, the excessive internal space of the machine body occupied by the heat dissipation structure can be effectively reduced, and the overall structural strength is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of frequency conversion equipment and relates to a frequency conversion integrated machine with a semi-open heat dissipation structure. Background Art

[0002] The frequency converter is an electric control device that changes the motor frequency to control the stepless speed of the AC motor. The inverter module generates high heat when converting current, so it must be attached to the radiator and dissipated through the radiator and fan to ensure its working stability.

[0003] Chinese utility model patent application number CN2019209223732 discloses an inverter integrated machine, including a housing, a power module arranged inside the housing, an exhaust assembly arranged outside the housing, and a radiator installed inside the housing, the radiator is connected to the power module, an air inlet and an air outlet are provided on the housing, the air inlet end of the exhaust assembly is connected to the air outlet, and the radiator has a ventilation cavity, one end of the ventilation cavity is connected to the air inlet, and the other end is connected to the air outlet. Among them, the air inlet duct, the ventilation cavity, the exhaust duct, and the exhaust fan are connected in sequence to form an independent air duct that runs through the interior of the housing.

[0004] In the prior art of this field, in order to ensure that the heat sink can quickly take away the heat of the inverter module, an independent air duct is made as disclosed in the above application text, but this independent air duct will occupy a larger body space and is more troublesome to install. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a variable frequency all-in-one machine with a semi-open heat dissipation structure to solve the problem that independent air ducts occupy too much internal space of the machine body and are troublesome to install.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a frequency conversion integrated machine with a semi-open heat dissipation structure, including a casing and a circuit board fixed in the casing, an inverter module is arranged on the circuit board, and also includes a radiator and a fan. The back side of the casing is concave to form a heat dissipation groove, and the bottom surface of the heat dissipation groove is provided with a heat dissipation port connected to the inside of the casing. The bottom surface of the radiator is buckled on the heat dissipation port and is fixedly connected to the bottom surface of the heat dissipation groove. The inverter module is arranged opposite to the heat dissipation port and is fixedly connected to the bottom surface of the radiator. The fan is fixedly connected to the top surface of the radiator, and at least one side of the casing is provided with a heat dissipation hole connected to the heat dissipation groove.

[0007] Preferably, the upper and lower ends of the top surface of the radiator are protruded to form symmetrically arranged air guides, and the outer ends of the air guides are bent inwards.

[0008] Preferably, the top surface of the radiator has a plurality of cooling fins arranged in parallel, and the plurality of cooling fins are arranged parallel to the horizontal direction.

[0009] Preferably, a ceramic sheet is provided between the inverter module and the heat sink and is bonded and fixedly connected to the two.

[0010] Preferably, the heat dissipation holes are in strip shape, and a plurality of the heat dissipation holes are staggered from top to bottom.

[0011] Preferably, a plurality of capacitor elements are provided on the circuit board, a bracket is provided in the casing, the bracket is fixedly connected to the inner wall of the casing, one end of the circuit board is fixedly connected to the bracket and the other end is fixedly connected to the inner wall of the casing, and a plurality of support holes corresponding to the capacitor elements for insertion and fixation are provided on the bracket.

[0012] Preferably, the housing has a mounting opening on the front side, a housing cover is detachably fixedly connected to the mounting opening, and the upper end surface of the housing is inclined toward the mounting opening.

[0013] Preferably, it further comprises a touch operation screen, which is embedded on the upper end surface of the casing and electrically connected to the circuit board.

[0014] Preferably, an emergency stop switch is further included, wherein the emergency stop switch is embedded on the upper end surface of the casing and is electrically connected to the circuit board.

[0015] Preferably, the casing is provided with a plurality of threading holes, to which protective wire loops are fixed, and the plurality of threading holes are located on the side or back of the casing.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. This inverter all-in-one adopts a semi-open heat dissipation structure, which is easy and quick to install, effectively reducing the heat dissipation structure from occupying too much internal space of the machine body, increasing the overall structural strength and having a simple and beautiful appearance;

[0018] 2. This frequency converter is equipped with a touch screen and emergency stop switch, which makes operation simple and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front axonometric structural schematic diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the rear axonometric structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0023] In the figure, 1. casing; 11. casing cover; 12. heat dissipation slot; 13. heat dissipation port; 14. heat dissipation hole; 15. threading hole; 2. circuit board; 21. inverter module; 22. capacitor element; 3. radiator; 31. ceramic sheet; 32. air guide; 33. cooling fin; 4. fan; 5. touch operation screen; 6. emergency stop switch; 7. bracket; 71. support hole; 8. protective coil. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] In this embodiment, if Figure 1-Figure 4 As shown, a frequency conversion integrated machine with a semi-open heat dissipation structure includes a casing 1 and a circuit board 2 fixed in the casing 1, the circuit board 2 is provided with an inverter module 21, and also includes a radiator 3 and a fan 4. The back side of the casing 1 is concave to form a heat dissipation groove 12, and the bottom surface of the heat dissipation groove 12 is provided with a heat dissipation port 13 connected to the inside of the casing 1, the bottom surface of the radiator 3 is buckled on the heat dissipation port 13 and is fixedly connected to the bottom surface of the heat dissipation groove 12, the inverter module 21 is arranged opposite to the heat dissipation port 13 and is fixedly connected to the bottom surface of the radiator 3, the fan 4 is fixedly connected to the top surface of the radiator 3, and at least one side of the casing 1 is provided with a heat dissipation hole 14 connected to the heat dissipation groove 12.

[0026] During installation, first put the radiator 3 and the fan 4 into the opening of the heat dissipation groove 12, cover the bottom surface of the radiator 3 on the heat dissipation port 13 and fix it to the bottom surface of the heat dissipation groove 12, then fix the fan 4 on the top surface of the radiator 3, align the inverter module 21 on the circuit board 2 with the heat dissipation port 13 and connect and fix it to the radiator 3 to complete the installation. The installation is very simple and quick.

[0027] At least one side of the housing 1 is provided with a heat dissipation hole 14 connected to the heat dissipation slot 12 to form a semi-open heat dissipation structure. Figure 2 The figure shows that heat dissipation holes 14 are opened on both sides of the casing 1. The heat dissipation holes 14 and the heat dissipation grooves 12 can not only form an air duct to quickly discharge heat from the heat dissipation holes 14 on both sides through the fan 4, but also occupy a smaller body space, thereby increasing the structural strength of the whole machine and improving the overall aesthetics.

[0028] Furthermore, when the casing 1 is overhead, a heat dissipation hole 14 connected to the heat dissipation slot 12 can be opened on the bottom side of the casing 1; when the heat dissipation slot 12 is adjacent to the upper end surface of the casing 1, a heat dissipation hole 14 connected to the heat dissipation slot 12 can also be opened on the upper end surface of the casing 1.

[0029] Furthermore, if Figure 2 , Figure 3As shown, the upper and lower ends of the top surface of the radiator 3 are protruded to form symmetrically arranged air guide portions 32, and the upper and lower ends of the top surface of the radiator 3 are protruded to form symmetrically arranged air guide portions 32, and the outer ends of the air guide portions 32 are bent inwards.

[0030] The top surface of the radiator 3 has a plurality of cooling fins 33 arranged in parallel, and the plurality of cooling fins 33 are arranged parallel to the horizontal direction.

[0031] The top surface of the radiator 3 protrudes with a plurality of parallelly arranged heat dissipation fins 33 to increase the heat dissipation area. The plurality of heat dissipation fins 33 are arranged parallel to the horizontal direction. The wind guide portion 32 can gather the wind generated by the fan 4 and guide it into the groove formed between the plurality of heat dissipation fins 33, and guide it to the heat dissipation holes 14 on both sides of the casing 1 to improve the heat dissipation efficiency.

[0032] The top surface of the radiator is provided with a plurality of radiating fins arranged in parallel, and the plurality of radiating fins are arranged in parallel with the horizontal direction.

[0033] Furthermore, if Figure 3 , Figure 4 As shown, a ceramic sheet 31 is provided between the inverter module 21 and the heat sink 3 to be bonded and fixed to the two.

[0034] The ceramic sheet 31 has a high thermal conductivity and can quickly and effectively dissipate heat from components to improve heat dissipation efficiency. The ceramic sheet 31 is resistant to high temperatures and corrosion to increase the service life of the heat dissipation structure.

[0035] The heat dissipation holes 14 are strip-shaped, and a plurality of the heat dissipation holes 14 are staggered from top to bottom to increase the heat dissipation amount and ensure the strength of the heat dissipation holes 14 on the housing 1.

[0036] In this embodiment, if Figure 3 As shown, the circuit board 2 is provided with a plurality of capacitor elements 22, a bracket 7 is provided in the casing 1, the bracket 7 is fixedly connected to the inner wall of the casing 1, one end of the circuit board 2 is fixedly connected to the bracket 7 and the other end is fixedly connected to the inner wall of the casing 1, and the bracket 7 is provided with a plurality of support holes 71 corresponding to the capacitor elements 22 for their insertion and fixation.

[0037] The circuit board 2 of the inverter includes a filter, which includes a plurality of capacitor elements 22 and inductor elements. Since the capacitor element 22 is relatively large and is arranged at one end of the circuit board 2, the structure of the circuit board 2 is seriously unbalanced. The capacitor element 22 is fixedly connected to one end of the circuit board 2 through a bracket 7, and the capacitor element 22 is limitedly supported through a support hole 71 to improve the stability of the circuit board 2 after being installed inside the casing 1.

[0038] In this embodiment, if Figure 1 , Figure 2As shown, the housing 1 has a mounting opening 12 on the front side, a housing cover 11 is detachably fixedly connected to the mounting opening 12 , and the upper end surface of the housing 1 is inclined toward the mounting opening 12 .

[0039] The housing 1 also includes a touch screen 5 , which is embedded on the upper surface of the housing 1 and electrically connected to the circuit board 2 .

[0040] The machine casing 1 also includes an emergency stop switch 6 , which is embedded on the upper end surface of the machine casing 1 and electrically connected to the circuit board 2 .

[0041] The upper end of the casing 1 is inclined toward the mounting opening 12 for guiding water, which not only prevents water droplets from accumulating, but also facilitates the operator to observe and operate the touch screen 5, and controls the emergency stop switch 6 for emergency avoidance according to actual usage and information feedback from the touch screen 5 to ensure safety.

[0042] The housing 1 is provided with a plurality of threading holes 15 , to which the protective wire loops 8 are fixed.

[0043] The protective coil 8 is also called a protective wire sleeve or a protective wire ring. Its main function is to be stuck in the wire threading hole 15 and pass through the wire connected to the circuit board 2. The housing 1 is generally made of a metal plate, and its purpose is to protect the wire from being cut by the metal plate.

[0044] A plurality of the wire holes 15 are located on the side or back of the housing 1. The wires can be hidden and passed through the side or back of the housing 1, thereby improving the appearance of the housing 1 and preventing the wires from hindering normal operation.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A frequency conversion integrated machine with a semi-open heat dissipation structure, comprising a housing (1) and a circuit board (2) fixed in the housing (1), wherein an inverter module (21) is provided on the circuit board (2), characterized in that: It also comprises a radiator (3) and a fan (4); the back of the casing (1) is concave to form a heat dissipation groove (12); the bottom surface of the heat dissipation groove (12) is provided with a heat dissipation port (13) connected to the inside of the casing (1); the bottom surface of the radiator (3) is buckled on the heat dissipation port (13) and is fixedly connected to the bottom surface of the heat dissipation groove (12); the inverter module (21) is arranged opposite to the heat dissipation port (13) and is fixedly connected to the bottom surface of the radiator (3); the fan (4) is fixedly connected to the top surface of the radiator (3); and at least one side of the casing (1) is provided with a heat dissipation hole (14) connected to the heat dissipation groove (12).

2. The frequency conversion integrated machine with a semi-open heat dissipation structure according to claim 1, characterized in that: The upper and lower ends of the top surface of the radiator (3) are protruded to form symmetrically arranged air guide portions (32), and the outer ends of the air guide portions (32) are bent inwards.

3. The frequency conversion integrated machine with a semi-open heat dissipation structure according to claim 2, characterized in that: The top surface of the radiator (3) is provided with a plurality of cooling fins (33) arranged in parallel, and the plurality of cooling fins (33) are arranged in parallel with the horizontal direction.

4. The frequency conversion integrated machine with a semi-open heat dissipation structure according to claim 1, characterized in that: A ceramic sheet (31) is provided between the inverter module (21) and the heat sink (3) and is bonded and fixedly connected to the two.

5. The frequency conversion integrated machine with a semi-open heat dissipation structure according to claim 1, characterized in that: The heat dissipation holes (14) are in a strip shape, and a plurality of the heat dissipation holes (14) are arranged in a staggered manner from top to bottom.

6. The frequency conversion integrated machine with a semi-open heat dissipation structure according to claim 1, characterized in that: The circuit board (2) is provided with a plurality of capacitor elements (22); a bracket (7) is provided inside the housing (1); the bracket (7) is fixedly connected to the inner wall of the housing (1); one end of the circuit board (2) is fixedly connected to the bracket (7) and the other end is fixedly connected to the inner wall of the housing (1); the bracket (7) is provided with a plurality of support holes (71) corresponding to the capacitor elements (22) for insertion and fixing.

7. A frequency conversion integrated machine with a semi-open heat dissipation structure according to any one of claims 1 to 6, characterized in that: The housing (1) has a mounting opening on the front side, to which a housing cover (11) is detachably fixedly connected, and the upper end surface of the housing (1) is inclined toward the mounting opening.

8. A frequency conversion integrated machine with a semi-open heat dissipation structure according to any one of claims 1 to 6, characterized in that: It also comprises a touch operation screen (5), wherein the touch operation screen (5) is embedded on the upper end surface of the casing (1) and is electrically connected to the circuit board (2).

9. A frequency conversion integrated machine with a semi-open heat dissipation structure according to any one of claims 1 to 6, characterized in that: It also includes an emergency stop switch (6), which is embedded in the upper end surface of the casing (1) and is electrically connected to the circuit board (2).

10. The frequency conversion integrated machine with a semi-open heat dissipation structure according to claim 1, characterized in that: The casing (1) is provided with a plurality of threading holes (15), to which protective coils (8) are fixed, and the plurality of threading holes (15) are located on the side or back of the casing (1).

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