CN204178251U - A kind of shell of electric actuator - Google Patents
A kind of shell of electric actuator Download PDFInfo
- Publication number
- CN204178251U CN204178251U CN201420603120.6U CN201420603120U CN204178251U CN 204178251 U CN204178251 U CN 204178251U CN 201420603120 U CN201420603120 U CN 201420603120U CN 204178251 U CN204178251 U CN 204178251U
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- coupled
- resistance
- electric actuator
- shell
- power source
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Abstract
The utility model discloses a kind of shell of electric actuator, comprise housing itself and run through the passage inside and outside housing, the refrigeration unit that can produce cold air is provided with in described housing, the sidewall of described passage is provided with temperature measuring equipment, described enclosure interior is also provided with control circuit, and described refrigeration unit, temperature measuring equipment are all electrically connected with control circuit.The utility model by arranging temperature measuring equipment on the passage of electric actuator, refrigerator is buried underground in enclosure interior, and by control circuit, temperature measuring equipment is electrically connected with refrigerator, reach when environment temperature raises, refrigerator work makes the object of electric actuator not excess temperature, when environment temperature is not high, refrigerator does not work, thus the temperature of electric actuator inside is fluctuated in a desirable scope.
Description
Technical field
The utility model relates to a kind of shell, especially a kind of shell of electric actuator.
Background technology
Electric actuator also can be referred to as electric operator.A kind ofly can provide rotation or the drive unit of rectilinear motion, it be drive energy with power supply and under certain control signal effect operation, electric actuator shortcoming is embodied in: it is not high to be only applicable to requirement of explosion proof, the place that source of the gas lacks.Structure relative complex, thrust is little, and failure rate is higher than pneumatic actuator, and due to the problem of structural complexity, the technical requirement for field maintenance person is also relatively high; Motor operation can produce heat, and regulating frequency is large, easily causes motor overheating, too increases the wearing and tearing of reduction gearing; Also have and run comparatively slow, from regulator output signal, move to assigned address to variable valve response, often consuming time more, be more than the place showing deficiency than pneumatic or hydraulic executer institute.
Therefore heat dissipation problem is concerning electric actuator being also a problem in the urgent need to address, electric actuator is in the market all generally by offering louvre, fan is coordinated to dispel the heat, although this radiating mode can dispel the heat, but the people staying factory building knows, what the blower fan in summer factory building was produced by boasting is all hot blast, therefore, when environment temperature is too high, take the effect of fan cooling and bad, so electric actuator still cannot be dispelled the heat under being in the environment of high temperature preferably, so provide a kind of can ensure that electric actuator works in an optimum temperature range radiating mode be very important concerning electric actuator.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is the shell providing a kind of electric actuator, comprise housing itself and run through the passage inside and outside housing, the refrigeration unit that can produce cold air is provided with in described housing, the sidewall of described passage is provided with temperature measuring equipment, described enclosure interior is also provided with control circuit, and described refrigeration unit, temperature measuring equipment are all electrically connected with control circuit.
As shown in Figure 1, the shell of electric actuator of the present utility model comprises housing itself, and the passage run through inside and outside shell, the sidewall of described passage is provided with temperature measuring equipment, described enclosure interior is filled out and is established refrigeration unit, described enclosure interior is also provided with control circuit, and described temperature measuring equipment, refrigeration unit are all and control circuit electrical connection.
As shown in Figure 2, described temperature measuring equipment comprises the first resistance and the second resistance, and described first resistance is thermo-sensitive resistor.Described control circuit is made up of pressure regulation unit, amplifying unit, comparing unit and driver element, described pressure regulation unit is coupled to external power source, described amplifying unit is coupled to temperature measuring unit and pressure regulation unit, described comparing unit is coupled to amplifying unit, described driver element is coupled to comparing unit, and is also coupled to refrigeration unit.
As shown in Figure 3, described temperature measuring unit comprises the first resistance and the second resistance, and described first resistance one end is coupled to external power source, the other end is coupled to the second resistance, described second resistance one end is coupled to the first resistance, other end ground connection, and described second resistance is thermo-sensitive resistor.
As shown in Figure 4, described pressure regulation unit comprises the 3rd resistance and the 4th resistance, and described 3rd resistance one end is coupled to external power source, and the other end is coupled to the 4th resistance, and described 4th resistance one end is coupled to the 3rd resistance, other end ground connection.
As shown in Figure 5, described amplifying unit comprises amplifier and the 5th resistance, the positive input of described amplifier is coupled between the first resistance and the second resistance, the reverse input end of described amplifier is coupled between the 3rd resistance and the 4th resistance, the feeder ear of described amplifier is coupled to external power source, earth terminal ground connection, and the output terminal of described amplifier is coupled to the 5th resistance, described 5th resistance one end is coupled to the output terminal of amplifier, and the other end is coupled to comparing unit.
As shown in Figure 6, described comparing unit comprises the 6th resistance, the 7th resistance and comparer, described 6th resistance one end is coupled to external power source, the other end is coupled to the 7th resistance, described 7th resistance one end is coupled to the 6th resistance, other end ground connection, the positive input of described comparer is coupled to the output terminal of amplifier, described inverting input is coupled between the 6th resistance and the 7th resistance, the feeder ear of described comparer is coupled to external power source, earth terminal ground connection, the output terminal of described comparer is coupled to driver element.
As shown in Figure 7, described driver element comprises the 8th resistance, NPN triode and relay coil, described 8th resistance one end is coupled to the output terminal of comparer, the other end is coupled to the base stage of NPN triode, the base stage of described NPN triode is coupled to the 8th resistance, and collector is coupled to external power source, and emitter is coupled to relay coil, described relay coil one end is coupled to the emitter of NPN triode, other end ground connection.
As illustrated in figures 1 and 8, described refrigeration unit comprises normal open switch and refrigerator, described normal open switch one end is coupled to ground, the other end is coupled to terminals of refrigerator, one terminals of described refrigerator are coupled to normal open switch, another terminals are coupled to external power source, the refrigeration section of described refrigerator is arranged at enclosure interior to supply cold air, radiating part is arranged at outside to discharge hot gas, the heat radiation of refrigerator is four road thermovents, be arranged on the outside of electric actuator housing, therefore can't see from the outside because its refrigeration section is arranged on case inside.
The utility model detecting by arranging the temperature of temperature measuring equipment to electric actuator, lowering the temperature to electric actuator by arranging refrigeration unit, by arranging control circuit, temperature measuring equipment and refrigeration unit are electrically connected, receive the temperature signal also final control refrigeration unit work that temperature measuring equipment produces, by producing cold air the temperature of electric actuator inside to be lowered, electric actuator is made to be operated in the interior work of temperature of an optimum range.
Accompanying drawing explanation
Fig. 1 is the shell mechanism schematic diagram of electric actuator of the present utility model;
Fig. 2 is control circuit schematic diagram of the present utility model;
Fig. 3 is the circuit theory diagrams of temperature measuring equipment of the present utility model;
Fig. 4 is the circuit theory diagrams of pressure regulation unit of the present utility model;
Fig. 5 is the circuit theory diagrams of amplifying unit of the present utility model;
Fig. 6 is the circuit theory diagrams of comparing unit of the present utility model;
Fig. 7 is the circuit theory diagrams of driver element of the present utility model;
Fig. 8 is the circuit theory diagrams of refrigeration unit of the present utility model.
In figure: 0, the radiating part of refrigerator; 1, housing itself; 2, temperature measuring equipment; 3, pressure regulation unit; 4, amplifying unit; 5, comparing unit; 6, driver element; 7, refrigeration unit; R1, the first resistance; R2, the second resistance; R3, the 3rd resistance; R4, the 4th resistance; R5, the 5th resistance; R6, the 6th resistance; R7, the 7th resistance; R8, the 8th resistance; A1, amplifier; A2, comparer; T, NPN triode; K, relay coil; K-00, normal open switch; H, refrigerator.
Embodiment
The shell of electric actuator as shown in Figure 1, its heat produced in the course of the work is all come from enclosure interior, and passage through the inside of housing with outside, therefore the temperature that temperature measuring equipment (2) can detect electric actuator enclosure interior is exactly set on channel side wall.
Described temperature measuring equipment (2) as shown in Figure 3, comprise the first resistance (R1) and the second resistance (R2), and the second resistance (R2) is thermo-sensitive resistor, and be that the thermo-sensitive resistor of positive temperature coefficient (PTC) is (when temperature is higher, the resistance of the second resistance (R2) is also larger), take connected mode as shown in Figure 3, when normal temperature, voltage on second resistance (R2) is U1=VCC*R2/ (R1+R2), when the temperature increases, the resistance of the second resistance (R2) can become large along with the rising of temperature, therefore the voltage U 2 assigned on the second resistance (R2) is just greater than U1.
Principle of work and the temperature measuring equipment (2) of described pressure regulation unit (3) are similar, also be to be connected with the 4th resistance (R4) by the 3rd resistance (R3) to reach the object of dividing potential drop in circuit, according to the principle that the size of series circuit resistance is directly proportional to voltage swing, namely the voltage that different resistances is assigned to is different, the voltage that described 4th resistance (R4) is assigned to is U3=VCC*R4/ (R3+R4), voltage on R4 adjusts, and changes the resistance of R4.
The positive input of described amplifying unit (4) is coupled between the first resistance (R1) and the second resistance (R2), reverse input end is coupled between the 3rd resistance (R3) and the 4th resistance (R4), according to the principle of work of amplifier (A1), the difference of amplifier (A1) to the voltage on the voltage on the second resistance (R2) and the 4th resistance (R4) is amplified and is exported by output terminal, and wherein the 5th resistance (R5) serves the effect of Limited Current size.
The positive input of described comparing unit (5) is coupled to the output terminal of amplifier (A1), reverse input end is coupled between the 6th resistance (R6) and the 7th resistance (R7), described 6th resistance (R6) and the 7th resistance (R7) constitute pressure regulator, identical with the principle of work of pressure regulation unit (3) with above-mentioned temperature measuring equipment (2), by changing the resistance of the 7th resistance (R7), the voltage point on the 7th resistance (R7) can be changed.Comparer (A2) compares the voltage that this voltage and amplifier (A1) export, if the voltage that amplifier (A1) exports is greater, comparer (A2) exports the comparative voltage of high level, and described amplifier (A1) is differential amplifier.
The 8th resistance (R8) one end of described driver element (6) is coupled to the output terminal of comparer (A2), the other end is coupled to the base stage of NPN triode (T), therefore the base stage of NPN triode (T) is served to the effect of current limliting, because comparer (A2) exports high level, therefore the base potential of NPN triode (T) raises, because its collector connects external power source and grounded emitter, meet triode emission knot positively biased, the turn-on condition that collector junction is reverse-biased, therefore NPN triode (T) conducting, electric current is from the collector of external power source through NPN triode (T), emitter and relay coil (K) flow to ground, because relay coil (K) two ends have electric current to pass through, according to the principle of electric magnetisation, coil two ends produce magnetic, thus adhesive is with the normal open switch (K-00) of armature keeper.
Normal open switch (K-00) adhesive in response to relay coil (K) that described refrigeration unit (7) is inner, therefore makes refrigerator (H) conducting, and ground and positive pole are to refrigerator (H) for powering on, and refrigerator (H) is started working.Hot gas by the air cooling of electric actuator inside, and is discharged by refrigerator.And when environment temperature is not high, amplifier (A1) does not just export amplifying signal, above-mentioned a series of actions is not just had yet, therefore refrigerator (H) does not work, described refrigerator is for only to like small-sized mini refrigerator MiNi COOLi for a long time, and the principle of work of refrigerator is as follows: semiconductor cooler the most frequently used in refrigerator.This refrigerator conductor connects two blocks of different metals, connects direct current, then a contact place temperature reduces, and another contact place temperature raises.If by reverse power connection, then the temperature inverse variation at contact place.This phenomenon is called peltier effect, also known as heat-electrical effect.Heat-the electrical effect of simple metal is very little, if replace metal with a N-type semiconductor and a P-type semiconductor, effect is just much bigger.After switching on power, produce electron-hole pair near upper contact, interior energy reduces, and temperature reduces, and outwardly absorbs heat, is called cold junction.The other end is because of electron-hole pair compound, and interior energy increases, and temperature raises, and to environment heat release, is called hot junction.
According to above-mentioned principle of work, when integrated environment temperature raises, blower fan can not meet the demand of heat radiation, temperature measuring equipment (2) can environmentally temperature time self output voltage signal change, the voltage signal exported when temperature measuring unit is greater than the voltage signal that pressure regulation unit (3) exports, amplifying unit (4) exports amplifying signal to comparer (A2) to this voltage signal after row amplifies, comparer (A2) compares this signal and internal reference voltage, if amplifying signal is greater than the signal that pressure regulator exports, the comparison signal that then comparer (A2) exports makes NPN triode (T) conducting, relay coil (K) adhesive, normal open switch (K-00) closes, refrigerator (H) is started working, thus the temperature of electric actuator inside is reduced.And by changing the internal reference voltage in pressure regulation unit (3) and comparator circuit, refrigerator (H) can be changed and trigger the preset temperature that refrigerator (H) works, user can adjust according to the actual requirements, obtain the operating temperature range of an electric actuator the best, make refrigerator (H) be triggered at the temperature preset and work.When environment temperature is not high, refrigerator (H) does not just work, thus the temperature of electric actuator inside is fluctuated in a fixing scope.
In sum, the utility model by arranging temperature measuring equipment on the passage of electric actuator, refrigerator is buried underground in enclosure interior, and by control circuit, temperature measuring equipment is electrically connected with refrigerator, reach when environment temperature raises, refrigerator work makes the object of electric actuator not excess temperature, and when environment temperature is not high, refrigerator does not work.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. the shell of an electric actuator, comprise housing itself and run through the passage inside and outside housing, it is characterized in that: in described housing, be provided with the refrigeration unit that can produce cold air, the sidewall of described passage is provided with temperature measuring equipment, described enclosure interior is also provided with control circuit, and described refrigeration unit, temperature measuring equipment are all electrically connected with control circuit.
2. the shell of electric actuator according to claim 1, is characterized in that: described temperature measuring equipment comprises:
First resistance: be coupled to external power source;
Second resistance: be thermo-sensitive resistor, one end is coupled to the first resistance, other end ground connection.
3. the shell of electric actuator according to claim 1, is characterized in that: described control circuit comprises:
Pressure regulation unit: be coupled to external power source to produce pressure regulation signal;
Amplifying unit: be coupled to temperature measuring equipment and pressure regulation unit receives temperature measurement signal and pressure regulation signal respectively, and produce amplifying signal;
Comparing unit: be coupled to amplifying unit to receive amplifying signal, and produce comparison signal;
Driver element: be coupled to comparing unit to receive comparison signal, is also coupled to refrigeration unit and exports the drive singal driving refrigeration unit.
4. the shell of electric actuator according to claim 3, is characterized in that: described pressure regulation unit comprises:
3rd resistance: be coupled to external power source;
4th resistance: one end is coupled to the 3rd resistance, other end ground connection.
5. the shell of electric actuator according to claim 3, is characterized in that: described amplifying unit comprises:
Amplifier: its positive input is coupled between the first resistance and the second resistance, inverse output terminal is coupled between the 3rd resistance and the 4th resistance, and feeder ear is coupled to external power source, earth terminal ground connection;
5th resistance: one end is coupled to the output terminal of amplifier, and the other end is coupled to comparator circuit.
6. the shell of electric actuator according to claim 3, is characterized in that: described comparing unit comprises:
6th resistance: be coupled to external power source;
7th resistance: one end is coupled to the 6th resistance, other end ground connection;
Comparer: its positive input is coupled to the output terminal of amplifier, reverse input end is coupled between the 6th resistance and the 7th resistance, and feeder ear is coupled to external power source, and earth terminal ground connection, output terminal is coupled to driver element.
7. the shell of electric actuator according to claim 3, is characterized in that: described driver element comprises:
8th resistance: the output terminal being coupled to comparer;
NPN triode: its base stage is coupled to the 8th resistance, and collector is coupled to external power source;
Relay coil: one end is coupled to the emitter of NPN triode, other end ground connection.
8. the shell of electric actuator according to claim 1, is characterized in that: described refrigeration unit comprises:
Refrigerator: its refrigeration section is arranged at enclosure interior to supply cold air, and radiating part is arranged at outside to discharge hot gas, is coupled to external power source;
Normal open switch: in response to relay coil, one end is coupled to refrigerator, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603120.6U CN204178251U (en) | 2014-10-17 | 2014-10-17 | A kind of shell of electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603120.6U CN204178251U (en) | 2014-10-17 | 2014-10-17 | A kind of shell of electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204178251U true CN204178251U (en) | 2015-02-25 |
Family
ID=52567045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420603120.6U Expired - Fee Related CN204178251U (en) | 2014-10-17 | 2014-10-17 | A kind of shell of electric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204178251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351593A (en) * | 2015-12-11 | 2016-02-24 | 天津天地众恒仪表技术有限公司 | Intelligent constant-temperature electric actuating mechanism |
-
2014
- 2014-10-17 CN CN201420603120.6U patent/CN204178251U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351593A (en) * | 2015-12-11 | 2016-02-24 | 天津天地众恒仪表技术有限公司 | Intelligent constant-temperature electric actuating mechanism |
| CN105351593B (en) * | 2015-12-11 | 2017-08-25 | 王海侠 | A kind of intelligent constant temperature electric operator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20151017 |
|
| EXPY | Termination of patent right or utility model |