CN202955825U - Backflow prevention device of air fan filter unit - Google Patents
Backflow prevention device of air fan filter unit Download PDFInfo
- Publication number
- CN202955825U CN202955825U CN 201220359232 CN201220359232U CN202955825U CN 202955825 U CN202955825 U CN 202955825U CN 201220359232 CN201220359232 CN 201220359232 CN 201220359232 U CN201220359232 U CN 201220359232U CN 202955825 U CN202955825 U CN 202955825U
- Authority
- CN
- China
- Prior art keywords
- blower fan
- filtering unit
- air
- check valve
- filter unit
- Prior art date
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a backflow prevention device of an air fan filter unit. The backflow prevention device for the air fan filter unit is composed of the air fan filter unit, an airflow suction inlet and a cleaning room, wherein the airflow suction inlet is arranged on the air fan filter unit. A check valve is arranged on the airflow suction inlet. The size of a switch curtain of the airflow inlet of the check valve is designed to be limited in the check valve so that the switch curtain is prevented from being turned over and touching on surrounding structures. A thin plate which is capable of limiting the size of airflow is arranged on the airflow inlet corresponding to the switch curtain. The backflow prevention device of the air fan filter unit has the advantages of being capable of not only saving a large amount of electric energy, but also achieving no-man control and automatic start of work, and reducing backflow of the air and greatly reducing air pollution of the cleaning room.
Description
Technical field
The utility model relates to a kind of device of toilet's Properties Control, especially a kind of device that prevents toilet's generation air inversion.
Background technology
In recent years, precision optical machinery industry, electronics industry and high-purity chemical industry or disc product industry etc. had all proposed high requirement to production and manufacturing environment, and the toilet of production use has caused everybody attention gradually.In the operation principle of toilet, the control of air-flow is the key factor of toilet, left and right performance, prevents that inside, toilet from infiltrating foreign matter and will prevent that at first exactly uncontrolled outer gas stream from entering the toilet.
But, traditional blower fan filtering unit does not have the static function of the blower fan of termination, pressure reduction generation adverse current in inside and outside, toilet during due to power supply or power cut, the phenomenon of contrary rotation can occur in motor or blower fan, particularly motor and blower fan are without anti-reverse spinfunction, even can accelerate rotation during adverse current, so just can not realize well the function of toilet.
The technology that adopts the self power generation motor to prevent the contrary rotation of motor is also arranged in the recent period, but because generated energy is little, therefore the adverse current phenomenon prevents the adverse current DeGrain without obviously reducing.The unit that also has now is when sensing the blower fan filtering unit inactive state, and the site operation personnel prevents that with the seal fan filter element adverse current from occuring with instrument is fixing, but also the adverse current phenomenon can occur when taking at the scene this measure.
Summary of the invention
Goal of the invention: can't avoid the shortcoming of toilet's air inversion for prior art, the applicant has designed a kind of blower fan filtering unit anti-backflow device.
Technical scheme: in order to realize the foregoing invention purpose, the technical scheme that the utility model adopts is: a kind of blower fan filtering unit anti-backflow device, formed by blower fan filtering unit and the air-flow suction inlet, the toilet that are arranged on blower fan filtering unit, be provided with a check valve on described air-flow suction inlet.It is circular or square that described blower fan filtering unit inside keeps for the enclosure location of check valve to be designed to, to guarantee installing space.The switch curtain size design of described check valve air flow inlet is limited in check valve, prevents that turnover from touching the peripheral construction thing.Air flow inlet corresponding to described switch curtain is provided with the thin plate that can limit the air-flow size.Described thin plate is by rivet splint fixation side and connecting portion, and this thin plate adopts vinyl fiber to make.
Beneficial effect: the present invention compared with prior art, its beneficial effect is: 1, not only can save a large amount of electric energy, and can realize unmanned control, automatically start work; 2, reduce the successful of air inversion, can decrease the air pollution of toilet.
Description of drawings
Accompanying drawing 1 schematic diagram that to be the utility model be connected with the blower fan filtering unit toilet.
Accompanying drawing 2 is the schematic diagram of the utility model internal gas running.
Accompanying drawing 3 is the structural representation of switch curtain in the utility model.
Work schematic diagram when accompanying drawing 4 turns round for the utility model.
Wherein CR is the toilet, and DC is external power.
The specific embodiment
Below in conjunction with accompanying drawing, by a most preferred embodiment, technical solutions of the utility model are elaborated, but protection scope of the present invention is not limited to described embodiment.
As shown in Figure 1, a kind of blower fan filtering unit anti-backflow device is provided with a check valve 20 by blower fan filtering unit 10.Described blower fan filtering unit 10 inside keep for the Position Design of check valve 20 for circular or square, preferably use square here.
Can be seen by accompanying drawing 2, pure air is fed to the toilet, the inside and outside pressure reduction that produces in toilet.At this moment, toilet's inner sustain malleation opposite outside is negative pressure, and blower fan filtering unit 10 prevents due to pressure reduction when static, and air moves to the outside internally.
Can be seen by accompanying drawing 3, check valve 20 is guaranteed the inner space with the square box form, and the bottom is provided with open shell 21, and above shell 21, at least one side forms most air flow inlets 22, according to the switch curtain 30 of air current flow direction switch air flow inlet 22.Inboard limit switch curtain 30 switching ranges of the shell 21 of check valve 20 prevent that switch curtain 30 from turning down the support of encountering the peripheral construction thing and forming.Check valve 20 shell 21 tops and the side air flow inlet 22 that consist of like this respectively form switch curtain 30,
When blower fan filtering unit 10 runs well, switch curtain 30 is opened, and passes air into more smooth and easy.On the contrary, when blower fan filtering unit 10 is static, 30, switch curtain is closed, and cuts off adverse current.
On shell 21 and the side form most air flow inlets 22, form 12,8 of sides above for example in the present embodiment.
The air flow inlet 22 of described switch curtain 30 correspondences is provided with the thin plate 33 that can limit the air-flow size, and described thin plate 33 is fixed by rivet, and this thin plate 33 adopts vinyl fiber to make.
When as shown in Figure 4, blower fan filtering unit 10 runs well, pure air is supplied to blower fan filtering unit 10 by check valve 20 air flow inlets 22.Along with the moving direction switch curtain 30 of pure air is opened to blower fan filtering unit 10 air flow inlet directions.The support 31 limit switch curtain 30 turnover scopes that shell 21 inboards are adhered to.
Claims (5)
1. blower fan filtering unit anti-backflow device, by blower fan filtering unit (10) and be arranged on air-flow suction inlet (22), toilet on blower fan filtering unit (10), it is characterized in that: be provided with a check valve (20) on described air-flow suction inlet (22).
2. a kind of blower fan filtering unit anti-backflow device according to claim 1 is characterized in that: described blower fan filtering unit (10) inside keeps for (21) spatial design of check valve (20) shell for circular.
3. a kind of blower fan filtering unit anti-backflow device according to claim 1, it is characterized in that: the switch curtain (30) of described check valve (20) air flow inlet (22) is limited in check valve (10).
4. a kind of blower fan filtering unit anti-backflow device according to claim 3 is characterized in that: the air flow inlet (22) that described switch curtain (30) is corresponding is provided with the thin plate (33) that can limit the air-flow size.
5. a kind of blower fan filtering unit anti-backflow device according to claim 4 is characterized in that: described thin plate (33) is by rivet splint fixation (33) side, and described thin plate (33) adopts vinyl fiber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220359232 CN202955825U (en) | 2012-07-24 | 2012-07-24 | Backflow prevention device of air fan filter unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220359232 CN202955825U (en) | 2012-07-24 | 2012-07-24 | Backflow prevention device of air fan filter unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955825U true CN202955825U (en) | 2013-05-29 |
Family
ID=48461393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220359232 Expired - Lifetime CN202955825U (en) | 2012-07-24 | 2012-07-24 | Backflow prevention device of air fan filter unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202955825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116034236A (en) * | 2020-08-07 | 2023-04-28 | 大金工业株式会社 | Fan unit and air treatment system comprising same |
-
2012
- 2012-07-24 CN CN 201220359232 patent/CN202955825U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116034236A (en) * | 2020-08-07 | 2023-04-28 | 大金工业株式会社 | Fan unit and air treatment system comprising same |
| CN116034236B (en) * | 2020-08-07 | 2024-02-13 | 大金工业株式会社 | Fan unit and air treatment system comprising same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103743055A (en) | Fresh air and indoor air purification dual-purpose machine | |
| CN203518049U (en) | Dustproof humidification type air purifying device | |
| CN205299827U (en) | Built -in inside and outside two cycle control's new - wind ventilator | |
| CN201779786U (en) | Fresh air ventilation machine | |
| CN202955825U (en) | Backflow prevention device of air fan filter unit | |
| CN208268091U (en) | A kind of blower of Intelligent purifying air | |
| CN104654484A (en) | Purification and dust collecting device for indoor and outdoor air circulation | |
| CN204593662U (en) | A kind of indoor-outdoor air pass purification dust collect plant | |
| CN206303258U (en) | Solar energy electric air-purifying respirator | |
| CN210861545U (en) | Novel building ventilation mechanism | |
| CN203810498U (en) | Motor control system of range hood | |
| CN204057736U (en) | A kind of hoisting box temperature control equipment | |
| CN208269343U (en) | A kind of green pipe ventilated equipment for building | |
| CN202328447U (en) | Adjustable side draught range hood | |
| CN205136089U (en) | Double motor square pipe shape fan | |
| CN205383091U (en) | Multi -functional exhaust fan | |
| CN203797810U (en) | Air purifier | |
| CN204663926U (en) | A kind of solar powered ventilating fan | |
| CN204961332U (en) | Take novel fan of stiffening rib | |
| CN203940556U (en) | A kind of novel energy-conserving air exchange system | |
| CN202833211U (en) | Energy-saving ventilator provided with automatic detection function | |
| CN203500065U (en) | Exhaust fan | |
| CN203886908U (en) | Intelligent controller for CIT fume hood | |
| CN202597149U (en) | Cooling fan | |
| CN202867340U (en) | Air duct group structure of extractor hood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |
|
| CX01 | Expiry of patent term |