Elevator control cabinet
Technical field
The utility model relates to a kind of elevator control aggregate, is specifically related to a kind of integrated frequency converter and the elevator control cabinet of braking resistor in same casing.
Background technology
Elevator control cabinet is speed governing with frequency converter main effect in elevator, make the startup of elevator and acceleration at stall all relatively relax, and the acceleration ratio of pilot process is very fast.Main purpose is for ride comfort, safety.When the motor of Frequency Converter Control stops fast; general all is to adopt the mode of resistance braking to realize; the regeneration that motor in the docking process is produced can consume by a braking resistor exactly, thereby realizes stopping fast, and the protection frequency converter is not subjected to the harm of regenerative electric energy.
A lot of faults of elevator variable frequency device make element wear out easily and cause because its operating ambient temperature is high, the heating of frequency converter itself and braking resistor makes electric indoor temperature very high, and the operating ambient temperature height can shorten the service life of electronic component.The oneself power consumption heating in electronic component when work is untimely looses and can cause burning under the situation about walking.Based on above problem, how to reduce the operating ambient temperature of frequency converter, be vital to the work life that prolongs frequency converter.The existing frequency converter heat radiation modes that adopt aluminum fin-inserted radiator (or aluminium extruded section radiator) force-air cooling more.As shown in Figure 1, radiator base plate clings on the power device, and heat is delivered to radiator base plate by power device, is delivered to radiating gill again, heat on the radiating gill and the heat in the control housing is dispersed in the air by forced air convection by fan at last.This radiator and circuit card and other electronics package are encased in the interior frequency converter casing of frequency converter casing together and reinstall in the control housing.
And ceramic pipe type ripple resistance is a kind of braking resistor commonly used at present when stopping fast, as shown in the figure, its mainly by earthenware pipe, be wrapped in the wavy alloy resistance wire of the lip-deep bandlet of earthenware pipe, three parts of the coating with high-temperature insulation characteristic that are coated in the alloy resistance wire surface form, be aided with terminals 13 and connect external device, and be provided with leg and play fixation.In addition, several ceramic pipe type ripple resistance can be together in series or parallel, to meet the demand of different resistances and power.
But there are following defective in the frequency converter of prior art and ceramic pipe type ripple resistance:
At first, simple fin traditional in the traditional frequency conversion device dispels the heat, thermal conductivity is low, therefore the heat that is difficult to power device is distributed distributes, ceramic pipe type ripple resistance, the heat radiation of then simple dependence resistor wire itself, there is the problem of heat dispersion difference in operating ambient temperature that can not fine reduction device;
Secondly, for machine-roomless lift, its control housing need be installed in the building masonry wall, the frequency converter thickness of employing Aluminium Radiator and the volume of ceramic pipe type ripple resistance are generally all bigger, therefore will need bigger placement space when mounted, do not meet the trend of product miniaturization, cause elevator control cabinet thickness direction size also bigger, just bring the shortcoming that inconvenience is installed for thin body of wall, do not meet the lightening trend of modern product yet, therefore be necessary to take measures to reduce frequency converter thickness.Adopt the utility model elevator control cabinet to satisfy fully the little and thin demand of machine-roomless lift.
The utility model content
At above-mentioned defective, the purpose of this utility model provides a kind of integrated lightening elevator control cabinet, and is not good with the elevator control cabinet radiating effect that solves prior art, inconvenience is installed, and its volume is bigger, is difficult to the problem that makes product integrated.
For achieving the above object, the utility model has adopted following technical characterictic:
A kind of elevator control cabinet, be applied to the mechanical field of snap catch, comprise a cabinet, be provided with the execution module of the power module that is used to provide rated voltage, the security module that is used for safety guard-safeguard, execution control command, the signaling module of detection peripheral signal in the cabinet, one metal tube braking resistor assembly also is set in the described cabinet, described metal tube braking resistor assembly further comprises a resistance casing, this resistance casing content is equipped with at least one metal tube braking resistor, described metal tube braking resistor further comprises: a tubular electric resistance, and its end is provided with eduction rod; And a plurality of radiating fins, it goes here and there those radiating fins equably and is contained on the described tubular electric resistance, or captives joint with described tubular electric resistance by two fin pedestals.
According to the described elevator control cabinet of the utility model preferred embodiment, described a plurality of radiating fin is connected in the following manner with described tubular electric resistance to be realized: be provided with a flange hole on the described radiating fin, this flange hole size is corresponding with the cross sectional dimensions of described tubular electric resistance, and described radiating fin passes those flange holes by described tubular electric resistance and goes here and there equably and be contained on the described tubular electric resistance.
According to the described elevator control cabinet of the utility model preferred embodiment, described a plurality of radiating fin is connected in the following manner with described tubular electric resistance to be realized: described two one of them person of fin pedestal are provided with slot at upper surface, another person is provided with slot at lower surface, described radiating fin is plugged in those slots, and two fin pedestals are fastened on the described tubular electric resistance mutually.
According to the described elevator control cabinet of the utility model preferred embodiment, also comprise a heat pipe heat radiation frequency converter, it further comprises: comprise a heat pipe heat radiation frequency converter, it further comprises: driving PCB plate and control pcb board, electrically connected dc-link capacitance group, starting resistance and some power devices on the described driving PCB, and the control pcb board is as the master control system and the electric connection of described driving PCB plate of elevator;
One heat-pipe radiator, it further comprises a pedestal, many heat pipes and a fin box, comprises a plurality of radiating fins in this fin box, described fin box one side is provided with the jack that is used to wear described heat pipe; , described power device is connected with pedestal, inserts in the pedestal in the end of described many heat pipes, extends to the bottom of those power devices, and the other end of described many heat pipes connects described radiating fin; And
One fan is installed on the described fin box, in order to adopt forced convection heat-dissipation mode the heat on the fin is dispersed in the air.
According to the described elevator control cabinet of the utility model preferred embodiment, described heat pipe heat radiation frequency converter and metal tube braking resistor assembly are erected in the cabinet.
According to the described elevator control cabinet of the utility model preferred embodiment, also comprise the plurality of fans group, each fan group comprises a fan at least, those fan groups are arranged on described heat pipe heat radiation frequency converter and/or the described metal tube braking resistor assembly.
According to the described elevator control cabinet of the utility model preferred embodiment, described metal tube braking resistor assembly is installed in the described cabinet, and is positioned at the top of described heat pipe heat radiation frequency converter.
Owing to adopted above technical characterictic, make the utility model than prior art, have following advantage and good effect:
At first, the utility model adopts heat-pipe radiator to replace traditional fin-inserted radiator, replace traditional straight barrel type tubular type ripple resistance with the metal tube braking resistor, dwindle the size of product greatly and taken volume, thereby integrated whole controls and brake assemblies in the realization elevator control cabinet, the integrated cost-cutting of realization product;
Secondly, the utility model adopts heat-pipe radiator to replace traditional fin-inserted radiator, metal tube braking resistor with the band radiating fin replaces traditional straight barrel type tubular type ripple resistance, improved the heat conductivility of product greatly, make that the temperature traverse of power device is more even, help the product life-saving;
Description of drawings
Fig. 1 is the scheme drawing of the elevator control cabinet of prior art;
Fig. 2 is the assembly drawing of first embodiment of a kind of elevator control cabinet of the utility model;
Fig. 3 A is the constructional drawing of braking resistor assembly of the present utility model;
Fig. 3 B is the constructional drawing of first embodiment of braking resistor of the present utility model;
Fig. 3 C is the constructional drawing of second embodiment of braking resistor of the present utility model;
Fig. 4 is the constructional drawing of frequency converter of the present utility model;
Fig. 5 is the constructional drawing of heat-pipe radiator of the present utility model;
Fig. 6 is the assembly drawing of second embodiment of a kind of elevator control cabinet of the utility model;
Fig. 7 is the assembly drawing of the 3rd embodiment of a kind of elevator control cabinet of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model done further elaborating.
Core concept of the present utility model is, replace traditional fin-inserted radiator with heat-pipe type radiator, with replacing traditional straight barrel type tubular type ripple resistance with the metal tube braking resistor, both are integrated in the same elevator control cabinet, place respectively to replace original frequency converter, braking resistor, cost is higher, and it is big to take up room, and is unfavorable for the problem that product is integrated.
Embodiment one
Please refer to Fig. 2; assembly drawing for first embodiment of elevator control cabinet of the present utility model; as seen from the figure; elevator control cabinet of the present utility model; mainly comprise a cabinet 1; be provided with the power module that is used to provide rated voltage in the cabinet; the security module that is used for safety guard-safeguard; carry out the execution module of control command; detect the signaling module of peripheral signal; also simultaneously integrated heat pipe heat radiation frequency converter 2 and metal tube braking resistor assembly 3 in the cabinet 1; heat pipe heat radiation frequency converter 2 and metal tube braking resistor assembly 3 are erected in the cabinet 1, and metal tube braking resistor assembly 3 is positioned at the top of heat pipe heat radiation frequency converter 2.Heat pipe heat radiation frequency converter and metal tube braking resistor assembly are erected in the cabinet.Also comprise the plurality of fans group, each fan group comprises a fan at least, and those fan groups are arranged on described heat pipe heat radiation frequency converter 2 and/or the described metal tube braking resistor assembly 3.
Please refer to Fig. 3 A, Fig. 3 B and Fig. 3 C, Fig. 5 A is the scheme drawing of metal tube braking resistor assembly of the present utility model, Fig. 3 B and Fig. 3 C, be respectively the constructional drawing of two kinds of metal control resistance, as seen, metal tube braking resistor assembly 3 further comprises a resistance casing 30, is equipped with at least one metal tube braking resistor 31 in this resistance casing 30, preferably two metal tube braking resistors 31 are stacked together.
The metal tube braking resistor further comprises: tubular electric resistance, and its end is provided with eduction rod; And a plurality of radiating fins, it goes here and there those radiating fins equably and is contained on the described tubular electric resistance, or captives joint with described tubular electric resistance by two fin pedestals.
See also Fig. 5 B, be a kind of scheme drawing of metal tube braking resistor, it comprises tubular electric resistance 32, top base 34, bottom base 35 and a plurality of radiating fin 33.Top base 34 and bottom base 35 are fastened on the tubular electric resistance 32 mutually, and radiating fin 33 is inserted on top base 34 and the bottom base 35.Wherein, the radiating fin in the present embodiment 33 is a strip shape.In use, the heat that tubular electric resistance 32 is distributed can be dispersed in the air by radiating fin 33, thereby metal pipe type braking resistor 30 of the present utility model has good heat-radiation effect.
See also Fig. 3 C, be the scheme drawing of another kind of metal tube braking resistor, radiating fin 33 is gone here and there equably and is contained on the tubular electric resistance 32.Have flange hole 36 on the radiating fin 33, the size in flange hole 36 is corresponding with the cross sectional dimensions of tubular electric resistance 32, and tubular electric resistance 32 can just in time run through this flange hole 36, and radiating fin 33 string can arbitrarily not slided after on tubular electric resistance 32.The flange hole 36 of present embodiment is circular, but is not limited in this, and its shape can be adjusted according to actual needs.When being rectangle such as the cross-sectional plane of tubular electric resistance 32, rectangle also can be arranged in flange hole 36; Flange hole 36 also can be irregularly shaped, and protrudes some support fixation faces in the inboard.In use, a big chunk heat of tubular electric resistance 32 can be delivered on the radiating fin 33, and is dispersed in the air by radiating fin 33, thereby metal pipe type braking resistor 30 of the present utility model has extraordinary radiating effect.
Outside the resistance casing 31 one group of fan group can be set, the heat and the external world that radiating fin 33 is distributed exchange.As can be seen from Figure, straight tube wave line braking resistor compared to existing technology, not only radiating effect is better for this metal tube braking resistor assembly, and volume is by contrast, has also reduced more than one times, is convenient to integrated.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the assembly drawing of the heat pipe heat radiation frequency converter among Fig. 2, and Fig. 5 is the constructional drawing of the heat-pipe radiator of utility model, and as seen from the figure, it comprises a resistance casing 29, is provided with the control pcb board on the casing 29, as the master control system of elevator; These casing 29 internal fixation heat-pipe type radiator and driving PCB plate 20, electrically connected two heat-dissipation power devices and dc-link capacitance group and starting resistance on the driving PCB plate, wherein power device is respectively first bigger power device 26 of heat radiation and the second less power device 27 of heat production.The dc-link capacitance group is used for the interchange clutter on the filtering frequency converter bus, and it is stable to keep DC bus-bar voltage.Starting resistance then is used to absorb the rush current that frequency converter starts moment, prevents that frequency converter from damaging because of immediate current impacts.The control pcb board electrically connects as the master control system and the described driving PCB plate 20 of elevator;
Heat-pipe radiator further comprises a pedestal 21, and these pedestal 21 inner-intubations have been set up in parallel many heat pipes 22, extend to the bottom of those power devices.
Those heat pipes 22 further have been connected in series a plurality of radiating fins 24 that are placed in the fin box 23, fin box 23 outer setting a fan group 25, this fan group 25 has comprised two fans.Pedestal 21 is fixed between described power device and the driving PCB plate 20.Fin box 23 1 sides are provided with the jack that is used to wear described heat pipe 22, and described fin box 23 and heat-pipe radiator are parallel arranged;
First power device 26 is installed in pedestal 21 tops, 27 of second power devices are installed in pedestal 21 bottoms, the length of the heat pipe 22 in the pedestal 21 is the riding position of corresponding power device also, most heat pipes 22 are positioned at first power device, 26 bottoms, and minority heat pipe 22 extends to the bottom of second power device 27.To reach best utilization ratio.
For reducing the interface thermal contact resistance, between power device and pedestal 21, be coated with the heat-conducting silicone grease layer, the heat that power device produces conducts to pedestal 21 by power device by the heat-conducting silicone grease layer, conduct to heat pipe 22 by pedestal 21 again, heat pipe 22 conducts to radiating fin 24 again, by the fan forced air convection heat on the radiating fin 24 is dispersed in the air at last.Fin box 23 adopts general steel plate to make, and mainly contains three effects, and the first flows through air-flow as the passage that gas flows through in box body, avoid gas leakage, helps heat radiation; It two has been heat-insulating effects, and the hot airs in the fin box 23 are kept apart with the cold air of outside; It three is the fixed mounts that serve as fan and heat-pipe radiator.
And, than traditional frequency converter, because the radiating fin 23 of heat-pipe radiator up rather than be deposited in the back side of heat-producing power device, thereby the thickness of whole frequency converter casing can reduce thereupon, become more frivolous, thereby reduce the thickness space that takies.
Certainly can be provided with some through holes on the frequency converter casing 29, driving PCB plate 20 is arranged in the frequency converter casing 29, the fin box 23 that radiating fin 24 is housed is arranged on frequency converter casing 29 outsides, and described heat pipe 22 passes through hole, is fixed in the pedestal 21 in frequency converter casing 29.
Embodiment two
Please refer to Fig. 6, be the constructional drawing of second embodiment of elevator control cabinet of the present utility model, as seen, in this embodiment, metal tube braking resistor assembly 3 is laterally placed in cabinet 1, and its fan group is arranged on the side of resistance casing 31, this kind mode can reduce the height of cabinet.
Embodiment three
Please refer to Fig. 7, constructional drawing for the 3rd embodiment of elevator control cabinet of the present utility model, as seen in this embodiment, metal tube braking resistor assembly 3 is laterally placed in cabinet 1, be fixed on the top of cabinet 1, the fin box 23 of heat pipe heat radiation frequency converter 2 is in frequency converter casing 29 top outer, and the fan group is between the resistance casing of fin box and metal tube braking resistor assembly, for both are public.The fan group comprises six fans, installs four fans additional to braking resistor blowing heat radiation between the fin box 23 of heat-pipe radiator and metal pipe type braking resistor 30, and radiating fin 24 air discharging and radiatings of two fans to frequency converter are arranged simultaneously, and air-flow flows from bottom to top.
In sum, in the utility model, frequency converter has adopted the heat-pipe radiator technology, and braking resistor has adopted the mode of metal winding pipe formula resistance finned and force-air cooling, improved the heat conductivility of product greatly, make that the temperature traverse of power device is more even, help the product life-saving; And the utility model is compared the radiator and the straight tube wave line braking resistor of traditional blade inserting, can significantly reduce thickness, thereby reduce the product occupation space, is convenient to product installation and integrated.Both are integrated in the same elevator control cabinet, are convenient to management control, maintenance, dismounting has met lightening, the incorporate trend of product.
More than disclosed only be preferred embodiment of the present utility model; but be not to be used for limiting the utility model itself, anyly have the knack of those skilled in the art, under the situation of the utility model intension; the equalization of being done changes and changes, and all should drop in the protection domain of the present utility model.