CN209266544U - A kind of device promoting isolator circuit board anti-interference ability - Google Patents

Abstract

The utility model discloses the devices that one kind can promote isolator circuit board anti-interference ability, wherein the signal ground of place of working and control card can be effectively isolated by isolator main body, to improve the anti-interference and isolating power of circuit board, the precision and reliability of isolator are improved；The outside of isolator main body is set by the dust guard that dust-proof shell, electrostatic dust prevention plate, Air Filter and non-woven fabrics are successively arranged and are formed from outside to inside, it can achieve better dust-proof effect, and unlatching blowing plant can be controlled by control button enters compressed air in vortex tube by compressed air inlet pipe, then the cold air that the refrigerator pipe through vortex tube comes out cools down to cooling fin, better refrigeration effect is obtained after can making the cold end of thermoelectric cooler and isolator body contact, increases the service life of isolator circuit board.

Description

A kind of device promoting isolator circuit board anti-interference ability

Technical field

The utility model belongs to isolator technical field, and in particular to one kind can promote isolator circuit board anti-interference ability Device.

Background technique

Isolator is a kind of using linear isolation principle, and input signal is carried out conversion output, input, output and work electricity Source three is mutually isolated, is particularly suitable for adapteds, isolator also known as the signal isolations such as the equipment instrument, the circuit board that are electrically isolated with needs Device, is important component in industrial control system, the signal between them transmit it is existing it is faint to millivolt level, microampere order it is small Signal, and there is ten volts of youngster or even thousands of volts, hundreds of amperes of big signal, existing low-frequency d signal also to have high-frequency pulse signal Etc..

Existing isolator is usually that in air, the dust in air is easy to inside isolator for directly exposure installation Accumulation, influences the normal use of isolator, reduces the working efficiency of isolator, some isolators are fixed on electric appliance, it has not been convenient to Disassembly is safeguarded that isolator work generates heat, and the bad isolator of heat dissipation effect is easy to be burned, and reduces isolator Service life.

Utility model content

In view of the shortcomings of the prior art, the utility model, which provides one kind, can promote the anti-interference energy of isolator circuit board The device of power.

To achieve the above objectives, the present invention adopts the following technical solutions: one kind can be promoted, isolator circuit board is anti-to be done The device of ability, including isolator main body, dust guard and radiator are disturbed, isolator main body is arranged in the dust guard The upper end outside dust guard is arranged in outside, the radiator；The isolator main body connects including input feeder ear, output Mouth end, input interface end, the first isolation, the second isolation and power isolation module, the input interface end input two signals: Beginning can signal and pwm signal；Input feeder ear input is 10V voltage；Power isolation module input terminal and input feeder ear phase Connection, output end are connected with output interface end；Signal circuit using first isolation and second isolation respectively to begin can signal and Pwm signal is isolated, and the primary of the first isolation and the second isolation uses common anode connection, and cathode is connected to circuit by current-limiting resistance The input interface end of plate is connected to the output interface end of circuit board after the output of isolator main body is pulled up by pull-up resistor；It is described Dust guard includes dust-proof shell, electrostatic dust prevention plate, Air Filter and non-woven fabrics, the dust-proof shell, electrostatic dust prevention plate, Air Filter The outside of isolator main body is successively set from outside to inside with non-woven fabrics, the radiator include thermoelectric cooler, vortex tube, Blowing plant, the thermoelectric cooler have hot end and cold end, and the vortex tube includes heating pipe and refrigerator pipe, the pressure Contracting air assembly is connect by compressed air inlet pipe with vortex tube, and the vortex tube is connected to thermoelectric cooler by refrigerator pipe Hot end on, the cold end of the thermoelectric cooler and isolator body contact, and the hot end surface of the thermoelectric cooler is set It is equipped with cooling fin；Be provided with control button on the right side of the dust guard, the blowing plant and thermoelectric cooler with Control button connection.

Further, the dust-proof shell is the dust-proof shell of aluminium sheet.

Further, the mesh of the Air Filter is 2~5mm.

Further, the electrostatic dust prevention plate is waveform electrostatic dust prevention plate.

Further, heat-conducting silicone grease is coated between the hot end of the thermoelectric cooler and the cooling fin.

Further, the thermoelectric cooler is semiconductor thermoelectric refrigeration device.

Further, the cooling fin is graphite heat radiation fin.

By adopting the above technical scheme, beneficial effects of the present invention:

A kind of device promoting isolator circuit board anti-interference ability, wherein isolator main body can be effectively by work Ground and the signal ground of control card are isolated, to improve the anti-interference and isolating power of circuit board, improve the precision of isolator with Reliability；It is set by the dust guard that dust-proof shell, electrostatic dust prevention plate, Air Filter and non-woven fabrics are successively arranged and are formed from outside to inside It sets in the outside of isolator main body, can achieve better dust-proof effect, and can control by control button and open compression Air assembly enters compressed air in vortex tube by compressed air inlet pipe, and then the refrigerator pipe through vortex tube comes out cold Gas cools down to cooling fin, obtains effect of preferably freezing after can making the cold end of thermoelectric cooler and isolator body contact Fruit increases the service life of isolator circuit board.

Detailed description of the invention

Fig. 1 is a kind of half-sectional structural representation for the device that can promote isolator circuit board anti-interference ability in the utility model Figure；

Fig. 2 is the component distribution schematic diagram of isolator main body in the utility model.

Specific embodiment

To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below In conjunction with specific embodiment, the utility model is further described:

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model, based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

Term " first ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relatively heavy The property wanted.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements, for the ordinary skill in the art, can be managed with concrete condition Solve the concrete meaning of above-mentioned term in the present invention.

As shown in Figure 1, Figure 2: one kind can promote the device of isolator circuit board anti-interference ability, including isolator main body 1, the outside of isolator main body 1 is arranged in dust guard 2 and radiator 3, the dust guard 2, and the radiator 3 is arranged Upper end outside dust guard 2；The isolator main body 1 includes input feeder ear D1, output interface end D2, input interface end D3, the first isolation G1, the second isolation G2 and power isolation module G3, the input interface end D3 input two signals: beginning energy Signal and pwm signal；Input feeder ear D1 input is 10V voltage；Power isolation module G3 input terminal and input feeder ear D1 It is connected, output end is connected with output interface end D2；Signal circuit is using the first isolation G1 and the second isolation G2 respectively to the beginning Energy signal and pwm signal are isolated, and the primary of the first isolation G1 and the second isolation G2 use common anode connection, and cathode passes through current limliting Resistance R2, R4 are connected to the input interface end D3 of circuit board and connect after the output of isolator main body 1 is pulled up by pull-up resistor R1, R3 To the output interface end D2 of circuit board；The dust guard 2 includes dust-proof shell 21, electrostatic dust prevention plate 22, Air Filter 23 and nothing Isolator is successively arranged in woven fabric 24, the dust-proof shell 21, electrostatic dust prevention plate 22, Air Filter 23 and non-woven fabrics 24 from outside to inside The outside of main body 1, the radiator 3 include thermoelectric cooler 31, vortex tube 32, blowing plant 33, the thermoelectricity system Cooler 31 has hot end 34 and cold end 35, and the vortex tube 32 includes heating pipe 36 and refrigerator pipe 37, the blowing plant 33 are connect by compressed air inlet pipe 38 with vortex tube 32, and the vortex tube 32 is connected to thermoelectric cooler by refrigerator pipe 37 On 31 hot end 34, the cold end 35 of the thermoelectric cooler 31 is contacted with isolator main body 1, and the thermoelectric cooler 31 34 surface of hot end is provided with cooling fin 40；The right side of the dust guard 2 is provided with control button 50, the blowing plant 33 and thermoelectric cooler 31 connect with control button 50.

Further, the dust-proof shell 21 is the dust-proof shell of aluminium sheet.

Further, the mesh of the Air Filter 23 is 2~5mm.

Further, the electrostatic dust prevention plate 22 is waveform electrostatic dust prevention plate.

Further, heat-conducting silicone grease is coated between the hot end and the cooling fin 40 of the thermoelectric cooler 31.

Further, the thermoelectric cooler 31 is semiconductor thermoelectric refrigeration device.

Further, the cooling fin 40 is graphite heat radiation fin.

Working principle: one kind can promote the device of isolator circuit board anti-interference ability, can be controlled by control button 50 System, which opens blowing plant 33, enters compressed air in vortex tube 32 by compressed air inlet pipe 38, then through vortex tube The cold air that 32 refrigerator pipe 37 comes out cools down to cooling fin 40, can make cold end 35 and the isolator master of thermoelectric cooler 31 Body 1 obtains better refrigeration effect after contacting, increase the service life of isolator circuit board.

The present embodiment not makes any form of restriction the shape of the utility model, material, structure etc., all foundations The technical essence of the utility model any simple modification, equivalent change and modification to the above embodiments, belong to this reality With the protection scope of new technique scheme.

Claims (7)

1. the device that one kind can promote isolator circuit board anti-interference ability, it is characterised in that: including isolator main body, dust-proof dress It sets and the outside of isolator main body is arranged in radiator, the dust guard, the radiator is arranged outside dust guard The upper end in portion；The isolator main body includes input feeder ear, output interface end, input interface end, the first isolation, the second isolation And power isolation module, the input interface end input two signals: beginning can signal and pwm signal；Input feeder ear input Be 10V voltage；Power isolation module input terminal is connected with input feeder ear, and output end is connected with output interface end；Letter Number circuit using the first isolation and the second isolation respectively to begin can signal and pwm signal be isolated, the first isolation and second every From primary use common anode connection, cathode is connected to the input interface end of circuit board, the output of isolator main body by current-limiting resistance After pulling up by pull-up resistor, it is connected to the output interface end of circuit board；The dust guard includes dust-proof shell, electrostatic dust prevention Plate, Air Filter and non-woven fabrics, the dust-proof shell, electrostatic dust prevention plate, Air Filter and non-woven fabrics be successively arranged in from outside to inside every Outside from device main body, the radiator include thermoelectric cooler, vortex tube, blowing plant, the thermoelectric cooler With hot end and cold end, the vortex tube includes heating pipe and refrigerator pipe, and the blowing plant passes through compressed air air inlet Pipe is connect with vortex tube, and the vortex tube is connected on the hot end of thermoelectric cooler by refrigerator pipe, the thermoelectric cooler Cold end and isolator body contact, and the hot end surface of the thermoelectric cooler is provided with cooling fin；The dust guard Right side is provided with control button, and the blowing plant and thermoelectric cooler are connect with control button.

2. a kind of device that can promote isolator circuit board anti-interference ability according to claim 1, it is characterised in that: described Dust-proof shell is the dust-proof shell of aluminium sheet.

3. a kind of device that can promote isolator circuit board anti-interference ability according to claim 1, it is characterised in that: described The mesh of Air Filter is 2~5mm.

4. a kind of device that can promote isolator circuit board anti-interference ability according to claim 1, it is characterised in that: described Electrostatic dust prevention plate is waveform electrostatic dust prevention plate.

5. a kind of device that can promote isolator circuit board anti-interference ability according to claim 1, it is characterised in that: described Heat-conducting silicone grease is coated between the hot end of thermoelectric cooler and the cooling fin.

6. according to claim 1 or 5 described one kind can promote the device of isolator circuit board anti-interference ability, it is characterised in that: The thermoelectric cooler is semiconductor thermoelectric refrigeration device.

7. according to claim 1 or 5 described one kind can promote the device of isolator circuit board anti-interference ability, it is characterised in that: The cooling fin is graphite heat radiation fin.