CN202682983U - Safety protection device applied to smoke purifying device and smoke purifying device - Google Patents
Safety protection device applied to smoke purifying device and smoke purifying device Download PDFInfo
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- CN202682983U CN202682983U CN 201220217065 CN201220217065U CN202682983U CN 202682983 U CN202682983 U CN 202682983U CN 201220217065 CN201220217065 CN 201220217065 CN 201220217065 U CN201220217065 U CN 201220217065U CN 202682983 U CN202682983 U CN 202682983U
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- chip microcomputer
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- 239000000779 smoke Substances 0.000 title claims abstract description 62
- 238000000746 purification Methods 0.000 claims abstract description 46
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000009499 grossing Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 3
- 239000003517 fume Substances 0.000 claims 3
- 230000001276 controlling effect Effects 0.000 abstract 4
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
The utility model relates to a safety protection device applied to a smoke purifying device and the smoke purifying device, and belongs to the field of smoke purification. The safety protection device comprises a pressure sampling circuit unit and a single chip microcomputer controlling circuit unit, wherein the pressure sampling circuit unit is provided with a pressure testing end and a signal output end, and the pressure testing end is arranged in a filtering cavity of the smoke purifying device and is used for detecting the pressure of the smoke purifying device; the signal output end is electrically connected with a signal input end of the single chip Microcomputer controlling circuit unit; and the single chip Microcomputer controlling circuit unit is provided with an air quantity regulating and controlling end of a variable-frequency motor connected with the smoke purifying device. The safety protection device disclosed by the utility model has a simple structure, and can control the work state of the smoke purifying device by judging a pressure input signal value so as to prevent the problems that the air absorption amount is reduced, the purification efficiency is reduced and circuits are broken because dust and impurities gradually block a filtering device after the smoke purifying device works for a while.
Description
Technical Field
The utility model belongs to the smoke purification field especially relates to a safety arrangement and smoke purification equipment for smoke purification equipment.
Background
At present, if the existing smoke purification equipment in the market is not additionally provided with an air pressure safety protection device, the following defects can be at least existed: (1) the filter device has excessive blockage, and the circuit is easy to damage under the long-term working condition; (2) the customer can not get the information of replacing the filter element, and only depends on feeling to replace consumables, thereby influencing the filtering effect.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a safety arrangement and smoke purification equipment for smoke purification equipment can solve present smoke purification equipment and because of the filter equipment on the plug too much, long-term work fragile circuit and can not in time indicate the problem of renew cartridge.
For solving the above problem the utility model provides a technical scheme as follows:
an embodiment of the utility model provides a safety arrangement for smoke purification equipment, include:
the pressure sampling circuit unit and the singlechip control circuit unit; wherein,
the pressure sampling circuit unit is provided with a pressure testing end and a signal output end, and the pressure testing end is arranged in a filter cavity of the smoke purification equipment and used for detecting the pressure of the smoke purification equipment; the signal output end is electrically connected with the signal input end of the single chip microcomputer control circuit unit;
the single chip microcomputer control circuit unit is provided with an air volume adjusting control end connected with a variable frequency motor of the smoke purifying equipment; and the air volume adjusting control end is electrically connected with a variable frequency motor of the smoke purification equipment.
The embodiment of the utility model provides a smoke purifying equipment is still provided, include:
a smoke purification device and the safety protection device; wherein,
and the pressure testing end of the pressure sampling circuit unit of the safety protection device is arranged in a filtering cavity of a filtering device of the smoke purification device.
According to the technical scheme provided by the foregoing, the utility model discloses embodiment's safety arrangement, pressure sampling circuit unit and single chip microcomputer control circuit unit cooperation can control smoke purification equipment's inverter motor, thereby realize the pressure change condition in the filter chamber through surveying smoke purification equipment, know filter equipment's filter core on the foreign matter jam condition, make frequency conversion adjustment smoke purification equipment's the amount of wind according to the above-mentioned condition, filter equipment's filter core plug had both been avoided too much, the fragile circuit of long-term work, can in time indicate again that the customer changes filter equipment's filter core.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a connection relationship between units of a safety protection device according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a safety protection device according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a micro-pressure plate of a safety protection device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a smoke purifying apparatus provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the 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 embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
An embodiment of the utility model provides a safety arrangement for smoke purification equipment, as shown in fig. 1, pressure sampling circuit unit and single chip microcomputer control circuit unit
The pressure sampling circuit unit is provided with a pressure testing end and a signal output end, and the pressure testing end is arranged in a filter cavity of the smoke purification equipment and used for detecting the pressure of the smoke purification equipment; the signal output end is electrically connected with the signal input end of the single chip microcomputer control circuit unit; the pressure sampling circuit unit is used for detecting the pressure in the filter cavity of the smoke purification equipment to obtain a micro-pressure signal, amplifying the micro-pressure signal and converting the micro-pressure signal into a signal which can be identified by a single chip of the single chip microcomputer control circuit unit;
the single chip microcomputer control circuit unit is provided with an air volume adjusting control end connected with a variable frequency motor of the smoke purifying equipment; the air volume adjusting control end is electrically connected with a variable frequency motor of the smoke purification equipment, and the variable frequency motor can adjust the air volume of the smoke purification equipment; the singlechip control circuit unit is used for outputting a control signal for controlling the variable frequency motor according to the signal value provided by the pressure sampling circuit unit.
The device also comprises a state indicator, the single chip microcomputer control circuit unit is also provided with an alarm signal output end, the alarm signal output end is electrically connected with the state indicator, and the state indicator can output alarm information and directly prompt the replacement of the filter device of the smoke purification equipment. The status indicator is an indicator light, such as a red indicator light. The singlechip control circuit unit is also used for outputting a signal for driving the state indicator to alarm according to the signal value provided by the pressure sampling circuit unit.
In the device, the pressure sampling circuit is formed by electrically connecting a pressure sensor and a differential operational amplifier circuit;
the pressure sensor is arranged in a filter cavity of the smoke purification equipment and used for detecting the pressure of the smoke purification equipment to obtain a micro-pressure signal and outputting the micro-pressure signal to the differential operational amplification circuit; a differential pressure type pressure sensor may be used.
The differential operational amplification circuit is used for amplifying the micro-pressure signal output by the pressure sensor, converting the amplified micro-pressure signal into a signal which can be identified by the singlechip control circuit, and outputting the signal to the singlechip control circuit.
In the device, the singlechip control circuit unit consists of a singlechip, a filter circuit and a frequency conversion circuit; wherein,
the filter circuit is electrically connected with the singlechip and is used for smoothing the voltage of an input pin of the singlechip in the circuit;
and the frequency conversion circuit is electrically connected with the singlechip and is used for sending out a control signal for adjusting the air volume according to the control of the singlechip.
In the device, the singlechip adopts an AT89S51 singlechip, and the singlechip has the advantages of high cost performance, excellent quality and online programming.
The pressure sampling circuit unit of the safety protection device can acquire and amplify pressure, the single chip microcomputer control circuit unit can output variable frequency control signals and alarm indication signals, when in actual use, all circuit units of the safety protection device can be arranged on a pressure alarm board, the pressure alarm board can be installed in smoke purification equipment, a pressure sensor part on the pressure alarm board is connected with an air nozzle on a filter cavity through a rubber pipe, the change of pressure difference between the inside of the filter cavity and the outside of the filter cavity is detected in real time, weak electric signals are generated according to the pressure difference, the electric signals are converted into signals capable of being identified by a single chip microcomputer after being amplified by a differential operation amplification circuit, and the single chip microcomputer judges whether to adjust the rotating speed and starts an alarm indication lamp according to the signals.
Specifically, as shown in fig. 2, the pressure sampling circuit unit includes: the pressure sensor can adopt a differential pressure type sensor, a millivolt-level voltage value is output by utilizing the pressure difference between the outside of a filter cavity of the smoke purification equipment and the inside of a detection cavity, the larger the pressure difference is, the larger the output voltage value is, the voltage value is amplified by the differential operation amplification circuit to become a 0-5 volt voltage signal which can be identified by the single chip microcomputer, a threshold value point voltage is set according to the difference of filter elements in the filter cavity of the smoke purification equipment, once the voltage value at the input end of the single chip microcomputer exceeds the threshold value voltage, the single chip microcomputer immediately stops the motor to operate, an alarm indicator lamp is lightened, and after the condition that whether the service life of the filter element is expired or other faults is eliminated, the smoke purification equipment can be restarted and.
In practice, the pressure sensor can be arranged on a micro-pressure plate (as shown in fig. 3), the micro-pressure plate is provided with a gas path inlet end a, and the gas path inlet end a is connected with a rubber tube to be connected into a filter cavity of the smoke purification equipment, so that the pressure in the filter cavity can be detected, and millivolt-level change voltage can be output according to the pressure difference inside and outside the filter cavity; and a pin 1 of the output port is GND, a pin 2 of the output port is used for providing an intracavity pressure detection value of the single chip microcomputer, and a pin 3 of the output port is used for positive 5V voltage.
The embodiment of the utility model provides a still provide a smoke purifying equipment, this equipment includes: a smoke purification device and the safety protection device; wherein,
the pressure testing end of the pressure sampling circuit unit of the safety protection device is arranged in the filtering cavity of the filtering device of the smoke purification device.
The structure of the smoke purifying device of the embodiment is shown in fig. 4, the upper end of the smoke purifying device is provided with an air inlet 41, the air inlet 41 is communicated with a filter cavity 42, a filter component is arranged in the filter cavity, a pressure testing end 49 of a safety protection device 45 is connected to the inside of the filter cavity 42, a control end of a single chip microcomputer control circuit unit of the safety protection device 45 is connected with a variable frequency motor 44, and the single chip microcomputer control circuit unit 45 is respectively and electrically connected with an electrifying indicator lamp 46, an alarm indicator lamp 47 and a potentiometer 48 for controlling air volume.
For the convenience of understanding, the present invention will be further described below with reference to the protection process of the smoke purifying apparatus using the safety protection device.
In the time of using, the utility model discloses safety arrangement installs in smoke purification equipment, adjust smoke purification equipment to normal operating condition, plug up the income wind gap, the simulation foreign matter blocks up the filter chamber state, intracavity and the poor expansion of chamber external pressure this moment, when reaching a critical point, the amount of wind adjustment control end that sets up the safety arrangement inside smoke purification equipment thinks that the foreign matter blocks up too much and has influenced the purification efficiency of equipment, consequently stop motor operation, light red warning indicator, treat the troubleshooting trouble.
The safety protection device provided by the embodiment of the utility model has simple structure, can accurately detect the blocking condition of foreign matters in the filter cavity of the smoke purification equipment, and judges the output state by the single chip microcomputer control circuit unit through real-time pressure sampling; once the foreign matter blocks up and surpasss the critical state, send alarm information promptly, alarm indicator lights, and control inverter motor makes the rotational speed adjustment. Therefore, the circuit is protected, a prompt effect is played for a client to replace the filter element, and closed-loop control of the equipment is realized.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A safety arrangement for a fume cleaning apparatus, comprising:
the pressure sampling circuit unit and the singlechip control circuit unit; wherein,
the pressure sampling circuit unit is provided with a pressure testing end and a signal output end, and the pressure testing end is arranged in a filter cavity of the smoke purification equipment and used for detecting the pressure of the smoke purification equipment; the signal output end is electrically connected with the signal input end of the single chip microcomputer control circuit unit;
the single chip microcomputer control circuit unit is provided with an air volume adjusting control end of a variable frequency motor connected with the smoke purifying equipment.
2. The apparatus of claim 1, further comprising: a status indicator; the single chip microcomputer control circuit unit is also provided with an alarm signal output end which is electrically connected with the state indicator.
3. The device of claim 1, wherein the pressure sampling circuit is formed by electrically connecting a pressure sensor and a differential operational amplifier circuit;
the pressure sensor is arranged in a filter cavity of the smoke purification equipment and used for detecting the pressure of the smoke purification equipment to obtain a micro-pressure signal and outputting the micro-pressure signal to the differential operational amplification circuit;
the differential operational amplification circuit is used for amplifying the micro-pressure signal output by the pressure sensor, converting the amplified micro-pressure signal into a signal which can be identified by the singlechip control circuit, and outputting the signal to the singlechip control circuit.
4. The apparatus of claim 3, wherein the pressure sensor is a differential pressure type sensor.
5. The device according to claim 1, wherein the single chip microcomputer control circuit unit is composed of a single chip microcomputer, a filter circuit and a frequency conversion circuit; wherein,
the filter circuit is electrically connected with the singlechip and is used for smoothing the voltage of an input pin of the singlechip in the circuit;
and the frequency conversion circuit is electrically connected with the singlechip and is used for sending out a control signal for adjusting the air volume according to the control of the singlechip.
6. The device of claim 4, wherein the single chip microcomputer is an AT89S51 single chip microcomputer.
7. The device of claim 1, wherein the status indicator is an indicator light.
8. A fume cleaning apparatus, comprising:
a fume cleaning device and a safety shield as claimed in any one of claims 1 to 7; wherein,
and the pressure testing end of the pressure sampling circuit unit of the safety protection device is arranged in the filtering cavity of the filtering device of the smoke purification device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220217065 CN202682983U (en) | 2012-05-14 | 2012-05-14 | Safety protection device applied to smoke purifying device and smoke purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220217065 CN202682983U (en) | 2012-05-14 | 2012-05-14 | Safety protection device applied to smoke purifying device and smoke purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202682983U true CN202682983U (en) | 2013-01-23 |
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ID=47538660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220217065 Expired - Fee Related CN202682983U (en) | 2012-05-14 | 2012-05-14 | Safety protection device applied to smoke purifying device and smoke purifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202682983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281850A (en) * | 2017-05-31 | 2017-10-24 | 李志勇 | A kind of method that use barometric pressure sensor detects airstrainer chocking-up degree |
| CN109304068A (en) * | 2018-06-21 | 2019-02-05 | 昆山市帝源环保设备有限公司 | Complicated pollutant air purification structure |
-
2012
- 2012-05-14 CN CN 201220217065 patent/CN202682983U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281850A (en) * | 2017-05-31 | 2017-10-24 | 李志勇 | A kind of method that use barometric pressure sensor detects airstrainer chocking-up degree |
| CN109304068A (en) * | 2018-06-21 | 2019-02-05 | 昆山市帝源环保设备有限公司 | Complicated pollutant air purification structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20180514 |