CN2057095U - Negative pressure sensor of dust catcher - Google Patents
Negative pressure sensor of dust catcher Download PDFInfo
- Publication number
- CN2057095U CN2057095U CN 89201534 CN89201534U CN2057095U CN 2057095 U CN2057095 U CN 2057095U CN 89201534 CN89201534 CN 89201534 CN 89201534 U CN89201534 U CN 89201534U CN 2057095 U CN2057095 U CN 2057095U
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- CN
- China
- Prior art keywords
- negative pressure
- sensor
- dust catcher
- utility
- model
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a negative pressure sensor of a duster, belonging to a switch type sensor which indicates the negative pressure value in a duster. The utility model can either be connected with an acoustooptic alarm to form a jamming alarm, or be connected with a main control circuit to form a jamming protector. The utility model can be connected with a light indicator so as to form a negative pressure (suction force) indicator in which wave rings are used to isolate different atmospheric pressure zones, and thereby, the wave rings are stretched or shortened along with changes in negative atmospheric pressure. Electrodes are respectively arranged on the wave rings and an adjustable screw thread column, and distances between the electrodes are adjusted through adjusting the screw thread column so that the switch threshold of the sensor is adjusted.
Description
The invention relates to a kind of invention of negative pressure sensor of motor of dust collector protection system.
Dust catcher has become the widely used a kind of electrical equipment in hotel, family and other public places now.Relevant various protective devices also arise at the historic moment on the dust catcher.This is to guaranteeing that electrical equipment and user's personal safety are indispensable.The employed motor of dust catcher is the series excitation type alternating current generator, because its designing institute decision, this electric appliances all adopts air cooling basically, and its wind regime just in time is the suction port of dust catcher, (or dirt accumulation is too much when suction port is stopped up by foreign matter, this in use is a common occurrence), and foreign matter, when dust can not in time be removed, on the one hand, motor is directed at hypervelocity (rotating speed rises to per minute three to 4,000 commentaries on classics from per minute more than 2,000 commentaries on classics) because of zero load, the commutator of its motor can produce a large amount of heat because of high-speed friction, and motor has but lost the condition of air cooling on the other hand, thereby burn (3～15 minutes) in the motor short time.In recent years, on the external dust catcher temperature relay is housed more, to prevent to burn the accident of motor, but the user is sense inconvenience often in actual use: even after getting rid of plugging fault immediately exactly after the actuating of relay of motor overtemperature is cut off the electricity supply, because of motor reinforcement heat is loose, the relay motor that do not reset still can't start.Can't start, waste heat more is difficult for leaving, and lowers the temperature naturally if wait it, often will wait 15 minutes～30 minutes.Day-light saving time is longer, and this obviously is inconsistent for the allegro modern life.The dust catcher factory utmost point needs a kind of " obstruction " sensor, in time cuts off electric current or reminds the user in time to fix a breakdown with acousto-optic to form the electric motor protecting system.
The purpose of dust catcher B/P EGR Back Pressure Transducer EGR invention is exactly in order to solve the sensing problem of " obstructions ", and indication dust catcher " suction " size is indicated the sensing problem.
When the suction port of dust catcher is blocked; cause a negative pressuren zone at the dust catcher front end immediately far above the operate as normal duration; by sensing technology this situation is reminded the user with sound and light alarm; fault when still having abnormal heating, motor is not just got rid of; this is to the protection motor, and the life-span that prolongs motor is vital.
The details of this invention is seen diagram: figure () is the front view of sensor, adopts the part to declare and looks.Figure (two) is the vertical view of sensor.1 is the crimp ring that rubber or other elastic materials are made, and crimp ring is divided into two districts to sensor: 2 for being communicated with extraneous normal barometric pressure districts, and 3 is negative pressuren zone.There is one or several electric contact on the crimp ring top.4 is adjustable threaded post, the turn threaded post then can regulate contact on the threaded post and the contact spacing on the crimp ring from.When there were difference in 1 district and 2 districts, crimp ring will be elongated or shortened, and circuit will be switched on when the contact is touched.Obviously, regulate threaded post, the threshold value that can regulate pressure difference sensing.
The advantage of invention B/P EGR Back Pressure Transducer EGR is tangible: because sensor can connect sound light alarming circuit, immediately can be when suction port stops up with acousto-optic to user reminding, and timely handling failure.When the sensor connection control circuit, can cut off electric current immediately.No matter adopt any mode, it has avoided the thermal inertia of temperature relay, and promptly getting rid of motor when fault can put into operation immediately, has protected the safe in utilization of dust catcher again.Because this sensor is a kind of electrical equipment, simple in structure, production cost is low, and reliability also greatly improves.When crimp ring adopts the bigger material of other rigidity to make,, can be used on the bigger occasion of other pressure reduction and make sensor usefulness because its pressure reduction door value is adjustable.When this sensor reversal connection was used, it became positive pressure sensor again.In a word, its purposes never is limited to dust catcher and makes the negative pressure sensing and use.
Because it is sensor is installed in the normal temperature district, therefore suitable with the common plastics manufacturing.
Claims (1)
1, a kind of dust catcher B/P EGR Back Pressure Transducer EGR, this sensor mainly can change the crimp ring (1) that extends shortening with negative pressure by one, a pair of or several electrical contact (5) is constituted, be installed on the crimp ring on one side it is characterized in that electrical contact, another side is installed on adjustable threaded post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89201534 CN2057095U (en) | 1989-02-03 | 1989-02-03 | Negative pressure sensor of dust catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89201534 CN2057095U (en) | 1989-02-03 | 1989-02-03 | Negative pressure sensor of dust catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2057095U true CN2057095U (en) | 1990-05-16 |
Family
ID=4859425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89201534 Withdrawn CN2057095U (en) | 1989-02-03 | 1989-02-03 | Negative pressure sensor of dust catcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2057095U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425191C (en) * | 2006-05-24 | 2008-10-15 | 宁波富达电器有限公司 | Air pressure sensing vacuum cleaner |
| CN101390728B (en) * | 2007-09-21 | 2010-12-08 | 胡海荣 | Dust fullness reminding device of vacuum cleaner |
| CN105070639A (en) * | 2015-07-08 | 2015-11-18 | 上虞菁华背光源有限公司 | Xenon lamp having adjustable interval between two electrodes and adjusting control method thereof |
| CN105992108A (en) * | 2015-02-03 | 2016-10-05 | 孙振华 | Self-filtering electromagnetism sealing bass energy converter |
-
1989
- 1989-02-03 CN CN 89201534 patent/CN2057095U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425191C (en) * | 2006-05-24 | 2008-10-15 | 宁波富达电器有限公司 | Air pressure sensing vacuum cleaner |
| CN101390728B (en) * | 2007-09-21 | 2010-12-08 | 胡海荣 | Dust fullness reminding device of vacuum cleaner |
| CN105992108A (en) * | 2015-02-03 | 2016-10-05 | 孙振华 | Self-filtering electromagnetism sealing bass energy converter |
| CN105070639A (en) * | 2015-07-08 | 2015-11-18 | 上虞菁华背光源有限公司 | Xenon lamp having adjustable interval between two electrodes and adjusting control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |