CN204489272U - A kind of single-chamber vacuum machine - Google Patents
A kind of single-chamber vacuum machine Download PDFInfo
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- CN204489272U CN204489272U CN201520087476.3U CN201520087476U CN204489272U CN 204489272 U CN204489272 U CN 204489272U CN 201520087476 U CN201520087476 U CN 201520087476U CN 204489272 U CN204489272 U CN 204489272U
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Abstract
The utility model discloses a kind of single-chamber vacuum machine, comprise casing, described chassis sidewall is provided with air intake fan and goes out fan, described chassis sidewall is also provided with button, described air intake is fanned and is gone out fan and all and between button is electrically connected with commutation circuit, wherein, when press the button start commutation circuit time, air intake fan and go out fan and all change and turn to.Single-chamber vacuum machine of the present utility model is provided with commutation circuit to realize to air intake fan and goes out turning to of fan and change, and by arranging button to handle, can effectively prevent ash bits from blocking fan housing by artificially sporadically changing air intake fan and going out turning to of fan.
Description
Technical field
The utility model relates to a kind of vacuum machine, especially a kind of single-chamber vacuum machine.
Background technology
Evacuator is the important component of vacuum packing machine.
Existing notification number be CN204075128U patent discloses a kind of vacuum machine, it is characterized in that it comprises castor, electronic box, joint pin, rear shrouding, upper end electric appliance box, electronic box lower installation board, electronic box upper mounting plate, electric door, panel door, expansion box, framework, left-hand door, shrouding under left-hand door, screen plate is installed, cleaning flange, vacuum pump radiator, instruction combined light, electrical equipment phase switch knob, pressure sensor, safety switch, hand, automatic knob, display operation screen, vacuumize air filter, vacuum pump, buzzer phone, warning light, air filter, the bottom of framework is provided with castor, the upper end of framework is provided with joint pin, the upper end of joint pin is provided with upper end electric appliance box, upper end electric appliance box is provided with and vacuumizes air filter, framework is provided with electronic box, and electric door is arranged on electronic box, electronic box is separately installed with electronic box lower installation board, electronic box upper mounting plate, electronic box upper mounting plate is separately installed with panel door, instruction combined light, electrical equipment phase switch knob, panel door is separately installed with pressure sensor, safety switch, hand, automatic knob, display operation screen, rear shrouding is arranged on one end of framework, air filter is arranged on the lower end of framework, left-hand door is arranged on electronic box, under left-hand door, shrouding is arranged on the lower end of left-hand door, installs the inside that screen plate is arranged on electronic box, installs on screen plate and is provided with vacuum pump, vacuum pump is provided with vacuum pump radiator, buzzer phone, warning light is installed on electronic box.
But above-mentioned patent and vacuum machine of the prior art, its radiator fan long-term work turns to same, especially the fan of peripheral hardware fan housing, in long-term working process, easily causes ash bits blocking fan housing.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of single-chamber vacuum machine, be provided with commutation circuit to realize to air intake fan and go out turning to of fan and change, and by arranging button to handle, can effectively prevent ash bits from blocking fan housing by artificially sporadically changing air intake fan and going out turning to of fan.
For achieving the above object, the invention provides following technical scheme: a kind of single-chamber vacuum machine, comprise casing, described chassis sidewall is provided with air intake fan and goes out fan, described chassis sidewall is also provided with button, described air intake fan and go out fan all and be electrically connected with the commutation circuit of wind direction of fanning for changing air intake and going out fan between button.
By adopting technique scheme, single-chamber vacuum machine of the present utility model is by arranging commutation circuit to air intake fan with go out turning to of fan and change, make air intake fan and go out fan and can be operated in two mode of operations, when air intake fan rotates forward out fan reversion, press the button startup commutation circuit, make air intake fan reverse out fan rotate forward, like this change air intake fan and go out turning to of fan, can effectively prevent ash bits block fan housing.
The utility model is set to further: described commutation circuit comprises control part and drive division, and described control part comprises:
One-level comparing unit: be coupled to button to receive the actuating signal of button, the first reference signal of this signal and its inside contrasted, and exports one-level comparison signal;
Secondary comparing unit: be coupled to one-level comparing unit to receive one-level comparison signal, the second reference signal of this signal and its inside contrasted, and exports secondary comparison signal;
Control unit: be coupled to secondary comparing unit to respond secondary comparison signal, and produce control signal.
The utility model is set to further: described drive division comprises:
Switch unit: be coupled to air intake fan and go out fan, in response to the both positive and negative polarity that control signal is fanned to switch air intake and gone out fan feeder ear.
The utility model is set to further: described one-level comparing unit comprises:
First resistance: be coupled to button;
Second resistance: the common node being coupled to external power supply and button;
3rd resistance: one end is coupled to the second resistance, other end ground connection;
First comparator: its in-phase input end is coupled to the first resistance, inverting input is coupled to the common node of the second resistance and the 3rd resistance.
The utility model is set to further: described secondary comparing unit comprises:
4th resistance: be coupled to external power supply;
5th resistance: one end is coupled to the 4th resistance, other end ground connection.
6th resistance: the mouth being coupled to the first comparator;
Second comparator: its in-phase input end is coupled to the 6th resistance, inverting input is coupled to the common node of the 4th resistance and the 5th resistance.
The utility model is set to further: described control unit comprises:
7th resistance: one end is coupled to the mouth of the second comparator, other end ground connection;
8th resistance: be coupled to the mouth of the second comparator and the common node of the 7th resistance;
Aerotron: its base stage is coupled to the 8th resistance, grounded emitter;
Relay coil: one end is coupled to external power supply, the other end is coupled to the collecting electrode of aerotron.
By adopting technique scheme, the commutation circuit of the utility model single-chamber vacuum machine comprises control part and drive division, wherein control part is provided with dual comparator, first comparator cushions receiving the electric signal come, second comparator performs comparison and trigger control unit, the control signal that control unit produces controls switch unit, and switch unit is changed air intake fan by the polarity of the feeder ear changing air intake fan and go out fan and gone out turning to of fan.
Compared to single-chamber vacuum machine of the prior art, single-chamber vacuum facility of the present utility model have following advantage: single-chamber vacuum machine of the present utility model is provided with commutation circuit to realize to air intake fan and goes out turning to of fan and change, and by arranging button to handle, can effectively prevent ash bits from blocking fan housing by artificially sporadically changing air intake fan and going out turning to of fan.
Accompanying drawing explanation
Fig. 1 is the view of the utility model single-chamber vacuum machine;
Fig. 2 is the schematic circuit diagram of one-level comparing unit, secondary comparing unit and control unit;
Fig. 3 is the schematic circuit diagram of switch unit.
Reference numeral: 1, casing; M1, air intake are fanned; M2, go out fan; S1, button; A1, one-level comparing unit; A2, secondary comparing unit; A3, control unit; A4, switch 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; A5, the first comparator; A6, the second comparator; T, aerotron; KM, relay coil; KM-1, change-over switch.
Detailed description of the invention
Referring to figs. 1 through Fig. 3, the embodiment of single-chamber vacuum machine of the present utility model is described further.
A kind of single-chamber vacuum machine, comprise casing 1, described casing 1 sidewall is provided with air intake fan M1 and goes out fan M2, described casing 1 sidewall is also provided with button S1, described air intake is fanned M1 and is gone out fan M2 and all and between button S1 is electrically connected with commutation circuit, wherein, when pressing the button S1 and starting commutation circuit, air intake fan M1 and go out fan M2 and all change and turn to.Described commutation circuit comprises control part and drive division, described control part comprises, be coupled to button S1 to receive the actuating signal of button S1, this signal and the first internal reference signal are contrasted, and export the one-level comparing unit A1 of one-level comparison signal, be coupled to one-level comparing unit A1 to receive one-level comparison signal, this signal and the second internal reference signal are contrasted, and export the secondary comparing unit A2 of secondary comparison signal, be coupled to secondary comparing unit A2 to respond secondary comparison signal, and produce the control unit A3 of control signal.Described drive division comprises, and is coupled to air intake fan M1 and go out fan M2, in response to control signal to switch air intake fan M1 and the switch unit A4 of both positive and negative polarity going out fan M2 feeder ear.Described one-level comparing unit A1 comprises, be coupled to the first resistance R1 of button S1, be coupled to the second resistance R2 of the common node of external power supply and button S1, one end is coupled to the second resistance R2,3rd resistance R3 of other end ground connection, its in-phase input end is coupled to the first resistance R1, and inverting input is coupled to the first comparator A5 of the common node of the second resistance R2 and the 3rd resistance R3.Described secondary comparing unit A2 comprises, be coupled to the 4th resistance R4 of external power supply, one end is coupled to the 4th resistance R4,5th resistance R5 of other end ground connection, be coupled to the 6th resistance R6 of the mouth of the first comparator A5, its in-phase input end is coupled to the 6th resistance R6, and inverting input is coupled to the second comparator A6 of the common node of the 4th resistance R4 and the 5th resistance R5.Described secondary comparing unit A2 comprises: described control unit A3 comprises, one end is coupled to the mouth of the second comparator A6,7th resistance R7 of other end ground connection, be coupled to the 8th resistance R8 of the mouth of the second comparator A6 and the common node of the 7th resistance R7, its base stage is coupled to the 8th resistance R8, the aerotron T of grounded emitter, one end is coupled to external power supply, and the other end is coupled to the relay coil KM of the collecting electrode of aerotron T.
Specific implementation process:
When the utility model single-chamber vacuum machine works in normal state, because its air intake fan M1 is contrary with the positive and negative terminals arrangement going out fan M2, the positive terminals of air inlet fan are coupled to the 0V of external power supply, negative terminals are coupled to the 24V of external power supply, the positive terminals going out fan M2 are coupled to the 24V of external power supply, negative terminals are coupled to the 0V of external power supply, now, air intake fan M1 reversion, go out fan M2 to rotate forward, air intake fan M1 is that vacuum machine is from extraneous draw air, go out the hot gas that fan M2 discharges vacuum machine casing 1 inside, cooperating like this, prevent the temperature of casing 1 inside too high, but, if air intake fan M1 and go out fan M2 and be operated in chronically and turn to, easily cause the blocking of ash bits, and but vacuum machine of the present utility model is when pressing the button S1, one-level comparing unit A1 triggers and exports comparison signal, its principle compared is: when the voltage of the in-phase input end of the first comparator A5 is greater than its reverse input end, comparator exports actv. high level, when the voltage of the in-phase input end of the first comparator A5 is less than its reverse input end, comparator does not export, wherein, the second resistance R2 that the reverse input end of the first comparator A5 connects and the 3rd resistance R3 constitutes the first pressure regulator, according to the resistance of adjustment second resistance R2 and the 3rd resistance R3, export inner first reference voltage signal.The principle of work of secondary comparing unit A2 is equal to one-level comparing unit A1, and why arranging one-level comparing unit A1 is voltage signal in order to buffer switch collects, to ensure that the circuit of rear stage is not subject to voltge surge.After one-level comparing unit A1 exports one-level comparison signal, secondary comparison signal also exports secondary comparison signal, once trigger control unit A3, make the aerotron T conducting in control unit A3, like this, relay coil KM just starts conducting, relay of the present utility model is intermediate relay, make the change-over switch KM-1 action being arranged on switch unit A4 after being turned, after change-over switch KM-1 action, air intake fan M1 and the extraneous power supply change poles going out fan M2, the positive pole of air intake fan M1 is coupled to external power supply 24V, the negative pole of air intake fan M1 is coupled to external power supply 0V, the positive pole going out fan M2 is coupled to external power supply 0V, and the negative pole going out fan M2 is coupled to external power supply 24V, and now, air intake fan M1 rotates forward, and goes out fan M2 and reverses, by the ash bits blowout be deposited on fan housing.
In sum, single-chamber vacuum machine of the present utility model is provided with commutation circuit to realize to air intake fan and goes out turning to of fan and change, and by arranging button to handle, can effectively prevent ash bits from blocking fan housing by artificially sporadically changing air intake fan and going out turning to of fan.
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 (6)
1. a single-chamber vacuum machine, comprise casing, described chassis sidewall is provided with air intake fan and goes out fan, it is characterized in that: described chassis sidewall is also provided with button, described air intake fan and go out fan all and be electrically connected with the commutation circuit of wind direction of fanning for changing air intake and going out fan between button.
2. single-chamber vacuum machine according to claim 1, it is characterized in that: described commutation circuit comprises control part and drive division, described control part comprises:
One-level comparing unit: be coupled to button to receive the actuating signal of button, the first reference signal of this signal and its inside contrasted, and exports one-level comparison signal;
Secondary comparing unit: be coupled to one-level comparing unit to receive one-level comparison signal, the second reference signal of this signal and its inside contrasted, and exports secondary comparison signal;
Control unit: be coupled to secondary comparing unit to respond secondary comparison signal, and produce control signal.
3. single-chamber vacuum machine according to claim 2, is characterized in that: described drive division comprises:
Switch unit: be coupled to air intake fan and go out fan, in response to the both positive and negative polarity that control signal is fanned to switch air intake and gone out fan feeder ear.
4. single-chamber vacuum machine according to claim 2, is characterized in that: described one-level comparing unit comprises:
First resistance: be coupled to button;
Second resistance: the common node being coupled to external power supply and button;
3rd resistance: one end is coupled to the second resistance, other end ground connection;
First comparator: its in-phase input end is coupled to the first resistance, inverting input is coupled to the common node of the second resistance and the 3rd resistance.
5. single-chamber vacuum machine according to claim 2, is characterized in that: described secondary comparing unit comprises:
4th resistance: be coupled to external power supply;
5th resistance: one end is coupled to the 4th resistance, other end ground connection;
6th resistance: the mouth being coupled to the first comparator;
Second comparator: its in-phase input end is coupled to the 6th resistance, inverting input is coupled to the common node of the 4th resistance and the 5th resistance.
6. single-chamber vacuum machine according to claim 2, is characterized in that: described control unit comprises:
7th resistance: one end is coupled to the mouth of the second comparator, other end ground connection;
8th resistance: be coupled to the mouth of the second comparator and the common node of the 7th resistance;
Aerotron: its base stage is coupled to the 8th resistance, grounded emitter;
Relay coil: one end is coupled to external power supply, the other end is coupled to the collecting electrode of aerotron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087476.3U CN204489272U (en) | 2015-02-09 | 2015-02-09 | A kind of single-chamber vacuum machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087476.3U CN204489272U (en) | 2015-02-09 | 2015-02-09 | A kind of single-chamber vacuum machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204489272U true CN204489272U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520087476.3U Expired - Fee Related CN204489272U (en) | 2015-02-09 | 2015-02-09 | A kind of single-chamber vacuum machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204489272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108945579A (en) * | 2018-06-01 | 2018-12-07 | 芜湖超源力工业设计有限公司 | A kind of type vacuum packing machine easy to use |
-
2015
- 2015-02-09 CN CN201520087476.3U patent/CN204489272U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108945579A (en) * | 2018-06-01 | 2018-12-07 | 芜湖超源力工业设计有限公司 | A kind of type vacuum packing machine easy to use |
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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: 20150722 Termination date: 20160209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |