CN213693446U

CN213693446U - Frequency converter

Info

Publication number: CN213693446U
Application number: CN202022615733.XU
Authority: CN
Inventors: 李玉相; 安普风; 赵敏; 吴岩松; 邓小池; 牛永刚
Original assignee: Suzhou Inovance Technology Co Ltd
Current assignee: Suzhou Inovance Technology Co Ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-07-13
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses a frequency converter, wherein, the frequency converter comprises a box body, a heat dissipation component, a rectification component and an inversion component, the heat dissipation component comprises a liquid cooling radiator, and the liquid cooling radiator is arranged in the box body; the rectifying assembly is arranged in the box body and is positioned on one side of the liquid cooling radiator; the inversion assembly is arranged in the box body and is positioned on one side, deviating from the rectification assembly, of the liquid cooling radiator. The utility model discloses technical scheme aims at reducing the waste of invalid space in the converter, makes converter inner structure arrange compacter in order to reduce the whole volume of converter, convenient to use.

Description

Frequency converter

Technical Field

The utility model relates to an electrical equipment technical field, in particular to converter.

Background

The frequency converter is an electrical device which converts a power frequency power supply into an adjustable and controllable frequency power supply by utilizing the switch control of an industrial semiconductor device. The existing frequency converter is usually internally provided with electric structures such as a rectifying unit, a capacitor filtering unit, an inversion unit and the like, and a heat dissipation unit is required to be arranged to dissipate heat of the electric structures, however, in order to guarantee heat dissipation efficiency, each part inside the frequency converter has a large gap, so that the internal structure arrangement is not compact enough, and the whole frequency converter is large in size and high in structural cost. Therefore, how to optimize the layout among devices in the high-power frequency converter becomes a technical problem to be solved urgently by those skilled in the art.

The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a converter aims at reducing invalid space in the converter extravagant, makes converter inner structure arrange compacter in order to reduce the whole volume of converter, convenient to use.

In order to achieve the above object, the utility model provides a frequency converter, include:

a box body;

the heat dissipation assembly comprises a liquid cooling radiator, and the liquid cooling radiator is arranged in the box body;

the rectifying assembly is arranged in the box body and is positioned on one side of the liquid cooling radiator; and

the inversion assembly is arranged in the box body and is positioned on one side, deviating from the rectifying assembly, of the liquid cooling radiator.

In an embodiment of the present application, the inverter assembly includes an inverter and a control motherboard, and the inverter is electrically connected to the control motherboard;

the inverter is attached to the surface, deviating from the rectifying assembly, of the liquid cooling radiator, and the control mainboard is located on one side, deviating from the liquid cooling radiator, of the inverter.

In an embodiment of the application, the definition the box has upper and lower direction, the converter still includes the capacitance assembly, the capacitance assembly is located in the box to be located the liquid cooling radiator, the rectification subassembly and the top of contravariant subassembly, capacitance assembly electric connection the rectification subassembly with the contravariant subassembly.

In an embodiment of the application, the capacitor assembly includes a capacitor plate and a bus bar, the capacitor plate is connected to the box body, and two opposite sides of the capacitor plate are connected with a plurality of capacitors;

the bus bar is electrically connected with the capacitor plate and located on one side, facing the liquid cooling radiator, of the capacitor plate, and the bus bar is electrically connected with the inverter assembly and the rectifier assembly respectively.

In an embodiment of the present application, the heat dissipation assembly further includes a water cooling mechanism, and the water cooling mechanism is disposed in the box and located above the capacitor assembly;

the liquid cooling radiator comprises a water cooling plate, and a water inlet end cover and a water outlet end cover which are respectively communicated with the two ends of the water cooling plate, wherein the water cooling mechanism is communicated with the water inlet end cover and the water outlet end cover so as to supply water for the water cooling plate.

In an embodiment of the present application, the frequency converter further includes a middle partition board, and the middle partition board is connected in the box body and divides the box body into a first accommodating cavity and a second accommodating cavity;

the rectifier module, the contravariant subassembly the water-cooling board and the capacitor module is located first holding chamber, water-cooling mechanism the end cover that intakes and the end cover that goes out is located second holding chamber.

In an embodiment of the application, the box body is provided with a vent, the vent is communicated with the second accommodating cavity, and the middle partition board is adjacent to the vent to form an air guide section.

In an embodiment of this application, water-cooling mechanism includes heat dissipation water tank and heat exchanger, the heat exchanger with heat dissipation water tank intercommunication, heat dissipation water tank is fixed in the box, the heat exchanger connect in the box, the heat exchanger respectively with the end cover of intaking of liquid cooling radiator with go out the water end cover intercommunication.

In an embodiment of this application, the converter still includes input copper bar and output copper bar, input copper bar and output copper bar respectively electric connection in the rectification subassembly with the contravariant subassembly, input copper bar with the output copper bar stretches out the bottom of box.

In an embodiment of the application, the frequency converter further comprises a lightning protection device, wherein the lightning protection device is arranged in the box body and is positioned on one side of the rectifying assembly, which deviates from the liquid cooling radiator.

The utility model discloses technical scheme's converter includes the box and all locates radiator unit, rectifier module and contravariant subassembly in the box, and wherein this radiator unit includes the liquid cooling radiator, and this rectifier module and contravariant subassembly can set up to be located the relative both sides of liquid cooling radiator. So through the mode of liquid cooling radiator in order to adopt the liquid cooling, just can dispel the heat to the rectifier subassembly and the contravariant subassembly that are located its relative both sides, thereby can be in order to guarantee the radiating effect, make rectifier subassembly and contravariant subassembly and liquid cooling radiator installation comparatively compact simultaneously, thereby reduce the waste of dead space in the converter, so can reduce the whole volume of converter on the basis of guaranteeing the radiating effect, and then the converter is more convenient with the installation moving in other equipment, improve the usability of converter.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the frequency converter of the present invention;

FIG. 2 is a schematic cross-sectional view of the frequency converter of the present invention;

fig. 3 is a schematic cross-sectional structural view of another view angle of the frequency converter of the present invention;

fig. 4 is a schematic cross-sectional structural view of another view angle of the frequency converter of the present invention;

fig. 5 is a schematic view of a partial structure of the frequency converter of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Frequency converter	224	Water pump
10	Box body	30	Rectifying assembly
				11	Air vent	40	Inversion assembly
12	Control keyboard	41	Inverter with a voltage regulator
				20	Heat radiation assembly	42	Control mainboard
21	Liquid cooling radiator	50	Capacitor assembly
				211	Water-cooling plate	51	Bus bar
212	Water inlet end cover	52	Capacitor plate
				213	Water outlet end cover	60	Middle partition board
22	Water cooling mechanism	61	Wind guide section
				221	Radiating water tank	70	Input copper bar
222	Heat exchanger	80	Output copper bar
				223	Fan with cooling device	90	Lightning protection device

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a frequency converter 100.

In the embodiment of the present invention, referring to fig. 1 to 4, the frequency converter 100 includes a box 10, a heat dissipation assembly 20, a rectification assembly 30 and an inverter assembly 40, wherein the heat dissipation assembly 20 includes a liquid cooling radiator 21, and the liquid cooling radiator 21 is disposed in the box 10; the rectifying assembly 30 is arranged in the box body 10 and is positioned at one side of the liquid cooling radiator 21; the inversion assembly 40 is disposed in the box 10 and located on a side of the liquid cooling radiator 21 away from the rectifying assembly 30.

The box 10 is mainly used for mounting and carrying components such as the protective heat dissipation assembly 20, the rectification assembly 30, the inverter assembly 40, and the like, and can be assembled into a whole after the components of the frequency converter 100 are processed and manufactured, so that the frequency converter 100 can be conveniently moved and transported. In order to improve the service life, the box 10 may be made of metal, such as: stainless steel materials, aluminum alloy materials, copper alloy materials, iron alloy materials and the like. The rectifying component 30 is used for rectifying an externally input alternating current power supply into a direct current voltage, and then the inverting component 40 inverts the direct current voltage into alternating current with different frequencies according to requirements and outputs the alternating current. In addition, the box 10 is further provided with a control keyboard 12 for controlling the frequency converter 100, and the box 10 is further provided with an interface end for electrically connecting with an external device.

The utility model discloses technical scheme's converter 100 includes box 10 and all locates radiator unit 20, rectifier module 30 and the contravariant subassembly 40 in box 10, and wherein this radiator unit 20 includes liquid cooling radiator 21, and this rectifier module 30 and contravariant subassembly 40 can set up to be located the relative both sides of liquid cooling radiator 21. So through the mode of liquid cooling radiator 21 in order to adopt the liquid cooling, just can dispel the heat to rectifier assembly 30 and the contravariant subassembly 40 that is located its relative both sides, thereby can be with guaranteeing the radiating effect, make rectifier assembly 30 and contravariant subassembly 40 and the installation of liquid cooling radiator 21 comparatively compact simultaneously, thereby reduce the waste in invalid space in the converter 100, so can reduce the whole volume of converter 100 on the basis of guaranteeing the radiating effect, and then the removal and the installation of converter 100 in other equipment are more convenient, improve the usability of converter 100.

In an embodiment of the present application, referring to fig. 2 to 3, the inverter assembly 40 includes an inverter 41 and a control main board 42, and the inverter 41 is electrically connected to the control main board 42; the inverter 41 is attached to a surface of the liquid cooling radiator 21 away from the rectifying component 30, and the control main board 42 is located on a side of the inverter 41 away from the liquid cooling radiator 21. The inverter 41 is attached to a surface of the liquid-cooled heat sink 21 away from the rectifier assembly 30, so as to further improve the heat dissipation effect of the inverter 41. Meanwhile, the control main board 42 is disposed on a side of the inverter 41 away from the liquid cooling radiator 21, so that the control main board 42 is closer to the outer surface of the box 10, thereby facilitating maintenance and testing of the control main board 42. It can be understood that the control board of the rectifying assembly 30 is also disposed close to the outer surface of the box 10, so as to facilitate maintenance and testing of the control board of the rectifying assembly 30 and improve maintenance efficiency.

In an embodiment of the present application, referring to fig. 2 to 3, it is defined that the box 10 has an up-down direction, the frequency converter 100 further includes a capacitor assembly 50, the capacitor assembly 50 is disposed in the box 10 and located above the liquid cooling radiator 21, the rectifier assembly 30 and the inverter assembly 40, and the capacitor assembly 50 is electrically connected to the rectifier assembly 30 and the inverter assembly 40. Specifically, the capacitor assembly 50 mainly functions as a filtering device for reducing the ripple factor of the ac ripple and smoothing the dc output. In the electronic circuit for converting alternating current into direct current for power supply, the capacitor assembly 50 not only enables the direct current output of the power supply to be stable, reduces the influence of alternating ripple waves on the electronic circuit, but also can absorb the current fluctuation generated in the working process of the electronic circuit and the interference of the alternating current power supply in series, so that the working performance of the electronic circuit is more stable. The capacitor assembly 50 is located above the liquid cooling radiator 21, the rectifier assembly 30 and the inverter assembly 40, so that the internal space of the box 10 is arranged longitudinally, thereby reducing the floor area of the box 10 in the horizontal direction and achieving the effect that the frequency converter 100 occupies a small floor area in the horizontal direction.

Further, the capacitor assembly 50 includes a capacitor plate 52 and a busbar 51, the capacitor plate 52 is connected to the box body 10, and two opposite sides of the capacitor plate 52 are connected to a plurality of capacitors; the busbar 51 is electrically connected to the capacitor plate 52 and located on one side of the capacitor plate 52 facing the liquid cooling heat sink 21, and the busbar 51 is electrically connected to the inverter assembly 40 and the rectifier assembly 30, respectively. The two opposite sides of the capacitor plate 52 are connected with a plurality of capacitors, so that the capacitor plate 52 is arranged in the box body 10 in a bilateral symmetry manner, the stress is balanced and the arrangement is compact, and meanwhile, the current values required in the working process can be effectively reduced through the capacitors on the two sides. In addition, the capacitor plate 52 is electrically connected to the rectifying component 30 and the inverting component 40 through a busbar 51, the busbar 51 is disposed on one side of the capacitor plate 52 facing the liquid cooling heat sink 21, and is located between the rectifying component 30 and the inverting component 40 so as to electrically connect to the rectifying component 30 and the inverting component 40, and the internal arrangement of the frequency converter 100 is further compact.

In an embodiment of the present application, referring to fig. 2 to 5, the heat dissipation assembly 20 further includes a water cooling mechanism 22, and the water cooling mechanism 22 is disposed in the box 10 and above the capacitor assembly 50; liquid cooling radiator 21 includes water-cooling board 211 and communicates respectively the end cover 212 and the end cover 213 of intaking at water-cooling board 211 both ends, water-cooling mechanism 22 with water end cover 212 of intaking with water end cover 213 switches on, is used for doing water-cooling board 211 supplies water. Specifically, the water cooling mechanism 22 is disposed in the housing 10 above the capacitor module 50 to further longitudinally arrange the structure in the housing 10. Meanwhile, the water cooling mechanism 22 is communicated with the water inlet end cover 212 and the water outlet end cover 213 to continuously supply water for the water cooling plate 211 in a circulating manner, so that the fluidity of water cooling liquid in the water cooling plate 211 is ensured, and the heat dissipation effect of the water cooling plate 211 is improved.

Further, the frequency converter 100 further includes a middle partition plate 60, and the middle partition plate 60 is connected in the box 10 and divides the inside of the box 10 into a first accommodating cavity and a second accommodating cavity; the rectifying component 30, the inverting component 40, the water cooling plate 211 and the capacitor component 50 are disposed in the first accommodating cavity, and the water cooling mechanism 22, the water inlet end cover 212 and the water outlet end cover 213 are disposed in the second accommodating cavity. Specifically, the middle partition 60 may be detachably connected to the inside of the cabinet 10 by screws or snaps, etc. to facilitate later maintenance and replacement. The box body 10 is divided into a first accommodating cavity and a second accommodating cavity by the middle partition plate 60, so that the water cooling mechanism 22 is separated from other electric structures such as the inverter assembly 40 and the rectifier assembly 30, and the water and electricity separation effect is achieved. Because the contravariant subassembly 40 and the rectification subassembly 30 have more electric connection structure, separate the water-cooling mechanism 22 with contravariant subassembly 40 and rectification subassembly 30 and set up, avoid contravariant subassembly 40 and rectification subassembly 30 to contact the water of water-cooling mechanism 22 and lead to damaging, improved the holistic security of converter 100, guarantee the life of converter 100.

Furthermore, the box body 10 is provided with a vent 11, the vent 11 is communicated with the second accommodating cavity, and the middle partition plate 60 is adjacent to the vent 11 to form an air guiding section 61. Specifically, the ventilation opening 11 is formed in the box body 10, so that the second accommodating cavity can be communicated with the outside, and the water cooling mechanism 22 is arranged in the second accommodating cavity, so that outside air flow can flow into the second accommodating cavity through the ventilation opening 11, and the water cooling mechanism 22 can be effectively cooled and dissipated. And flow through forming wind guide section 61 on median septum 60 in order to accelerate the air current to further improve the radiating effect to the second holding chamber, in addition, this wind guide section 61 can also play the effect of leading water, when the rivers of water-cooling mechanism 22 arrived wind guide section 61, can lead rivers to vent 11 department and flow to the external world through this wind guide section 61, thereby improve the protection to converter 100 inner structure.

In an embodiment of the present application, referring to fig. 2 to 4, the water cooling mechanism 22 includes a heat radiation water tank 221 and a heat exchanger 222, the heat exchanger 222 is communicated with the heat radiation water tank 221, the heat radiation water tank 221 is fixed in the box 10, the heat exchanger 222 is connected to the box 10, and the heat exchanger 222 is respectively communicated with the water inlet end cover 212 and the water outlet end cover 213 of the liquid cooling radiator 21. Specifically, the heat radiation water tank 221 is arranged to store water so that the inside of the frequency converter 100 can supply water, and frequent water adding is avoided when the frequency converter 100 is used. The heat exchanger 222 is connected to the water inlet end cap 212 and the water outlet end cap 213 of the liquid cooling radiator 21 through a water pipe, and a water pump 224 is connected to the water pipe, so that the water in the water pipe flows. So make the interior water of heat radiation water tank 221 flow out microthermal rivers and follow the inflow end cover 212 of water-cooling plate 211 from heat exchanger 222 through water pump 224, follow the rivers that go out high temperature from water end cover 213 after the cooling to rectifier assembly 30 and inverter assembly 40 to flow to heat exchanger 222 and cool down in order to get back to heat radiation water tank 221, and then accomplish the radiating effect of continuously supplying water. In addition, the water cooling mechanism 22 further includes a fan 223, and the fan 223 can further accelerate the flow of the air flow in the housing 10.

In an embodiment of the present application, referring to fig. 2, the frequency converter 100 further includes an input copper bar 70 and an output copper bar 80, the input copper bar 70 and the output copper bar 80 are respectively electrically connected to the rectifying component 30 and the inverting component 40, and the input copper bar 70 and the output copper bar 80 extend out of the bottom of the box 10. Specifically, the input copper bar 70 and the output copper bar 80 are both located at the bottom of the box 10, so that the operator can electrically connect the frequency converter 100 with an external device, and the installation and connection efficiency is improved.

Optionally, referring to fig. 2, the frequency converter 100 further includes a lightning arrester 90, where the lightning arrester 90 is disposed in the box 10 and located on a side of the rectifying assembly 30 away from the liquid-cooled heat sink 21. Specifically, through setting up lightning protection device 90 in order to improve the security that converter 100 used to avoid converter 100 to suffer thunder and lightning harm because of thunder and lightning surge invasion and thunder and lightning wave response overvoltage, this lightning protection device 90 can surge protector, also known as surge protector, lightning protection device 90, lightning arrester. The device is used for protecting electric equipment from being damaged by lightning electromagnetic pulse or operation overvoltage, and is an indispensable device for protecting electronic equipment from lightning. When the peak current or the voltage is suddenly generated in the electric loop or the communication line due to the external interference, the surge protector can conduct and shunt in a very short time, so that the damage of the surge to other equipment in the loop is avoided. And this lightning protection device 90 deviates from one side of liquid cooling radiator 21 at rectification subassembly 30 through the setting to in the maintenance change is carried out to it after lightning protection device 90 damages, the efficiency of improvement maintenance.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A frequency converter, comprising:

a box body;

2. The frequency converter according to claim 1, wherein the inverter assembly comprises an inverter and a control main board, and the inverter is electrically connected with the control main board;

3. The frequency converter according to claim 1, wherein the case is defined to have a vertical direction, the frequency converter further comprises a capacitor assembly, the capacitor assembly is disposed in the case and located above the liquid-cooled heat sink, the rectifier assembly and the inverter assembly, and the capacitor assembly is electrically connected to the rectifier assembly and the inverter assembly.

4. The frequency converter according to claim 3, wherein the capacitor assembly comprises a capacitor plate and a busbar, the capacitor plate is connected to the box body, and a plurality of capacitors are connected to two opposite sides of the capacitor plate;

5. The frequency converter according to claim 3, wherein the heat dissipation assembly further comprises a water cooling mechanism, the water cooling mechanism is disposed in the box and above the capacitor assembly;

6. The frequency converter according to claim 5, further comprising a middle partition plate connected to the inside of the tank body and dividing the inside of the tank body into a first accommodating chamber and a second accommodating chamber;

7. The frequency converter according to claim 6, wherein the box body is provided with a vent, the vent is communicated with the second accommodating cavity, and the middle partition board is adjacent to the vent to form an air guide section.

8. The frequency converter according to claim 5, wherein the water cooling mechanism comprises a heat dissipation water tank and a heat exchanger, the heat exchanger is communicated with the heat dissipation water tank, the heat dissipation water tank is fixed in the box body, the heat exchanger is connected to the box body, and the heat exchanger is respectively communicated with a water inlet end cover and a water outlet end cover of the liquid cooling radiator.

9. The frequency converter according to any one of claims 3 to 8, further comprising an input copper bar and an output copper bar, wherein the input copper bar and the output copper bar are electrically connected to the rectifying component and the inverting component, respectively, and the input copper bar and the output copper bar extend out of the bottom of the box body.

10. The frequency converter according to any one of claims 3 to 8, further comprising a lightning protection device disposed in the tank and located on a side of the rectifying assembly facing away from the liquid-cooled heat sink.