CN202907841U - Dustproof mask with dynamic breathing - Google Patents
Dustproof mask with dynamic breathing Download PDFInfo
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- CN202907841U CN202907841U CN 201220400665 CN201220400665U CN202907841U CN 202907841 U CN202907841 U CN 202907841U CN 201220400665 CN201220400665 CN 201220400665 CN 201220400665 U CN201220400665 U CN 201220400665U CN 202907841 U CN202907841 U CN 202907841U
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Abstract
The utility model provides a dustproof mask with dynamic breathing. The dustproof mask with dynamic breathing is applied to a dust workplace. Filter materials of the dustproof mask are made of winkle type filter cotton, the adopted winkle angle theta of the filter material is less than 60 degrees, a winkle type generatrix is parallel to the gravity direction, and micro high-speed centrifugal fans are respectively arranged on the downstream portion of the filter material at an air inlet of the mask and an air outlet. On the premise of meeting the air flow for breathing for a human body, the effective filter area of the filter material is increased, the air speed is reduced, the flow resistance of the filter material is reduced, and the inhalation resistance is reduced. A micro electric air supplying and exhausting system and the micro high-speed centrifugal fans are adopted, and the requirement for the pressure in the inhaling process of the human body can be fully met, the increment of the pressure in the inhaling process of the human body is controlled to be in the reasonable range at the same time. The breathing pressure difference of the novel mask is controlled to be within 30 Pa, the structure design and the control of the whole system are simplified while the safety is met and the comfort is improved, and the mask is small in size, light in weight and convenient to carry.
Description
Technical field
The utility model relates to a kind of anti-dust respirator, relates in particular to a kind of anti-dust respirator articles for use that dynamic property is breathed that have for the dust work place.
Background technology
Protective respirator is anti-dust respirator particularly, to preventing that the dust granules pollutant from entering human body, minimizing has very important effect to infringement and the prophylactic propagation that relates to the dirt personnel health.At present, the kind of anti-dust respirator is a lot, and characteristic and the scope of application of self respectively arranged, and should consider according to the difference of the function of mouth mask, protection object, dust polluting environment of living in during selection.
For example, the self-absorbing filtering type mouth mask refers to take wearer's self breathing as power, deleterious particle thing in the air is carried out filtration, purification, reaches the protective respirator of protection purpose by mouth mask.This mouth mask can only not using under the environment of anoxic (content of oxygen is not less than 18% in the air) and the low concentrations of particulates contaminated environment, mainly be defendd the deleterious particle things such as various dust, cigarette solid particle, mist, liquid particulate.
Theory analysis and use practice show that there is the contradiction of security (dust-filtering efficient) and comfortableness in the self-suction dustproof mouth mask, the mouth mask that namely filter efficiency is higher, anti-dust performance is good, and its vapour lock is generally all larger, and the comfortableness the when wearer uses is relatively poor; And the mouth mask that filter efficiency is lower, anti-dust performance is relatively poor, its vapour lock is generally all less, and the comfortableness of wearing when using is relatively better.Even the mouth mask that strainability is identical, its comfortableness also with user's physiological metabolism Horizontal correlation.When being in low labour intensity such as the user, the comfortableness of mouth mask also guarantees easily.In case when the user was in high labour intensity, because the physiological metabolism level is higher, respiratory capacity increased rapidly, this moment, the comfortableness of mouth mask just was difficult to guarantee.Especially at the underground working environment of the many mines of China, because temperature and humidity is all higher, in case miner's labour intensity has increased slightly in the work, its physiological metabolism level will raise rapidly, be starved of and breathe the metabolism needs that a large amount of fresh airs could satisfy its health, the comfortableness of mouth mask also can worsen rapidly.At this moment, wearing anti-dust respirator has been a very large burden concerning the user, at this moment many miners often it is abandoned and need not, human respiratory is directly exposed in the high dust atmosphere.This also is one of miner's major reason of very easily suffering from anthraco-silicosis.Therefore research and development can be satisfied the dustproof mask of human safety and comfortableness simultaneously, and healthy for labourer in the high dust atmosphere of protection has important practical significance.
Below, the present situation of the existing mining dust-proof mouth mask of labor:
1,3M8110S N95 anti-dust respirator
The protection of the dust that this Simple mask produces when being used for the industrial circle operation.Because breather valve is not set, the impact of steam is very large so that filter cotton is breathed out, and is difficult to keep dry state more enduringly.Under high dust atmosphere, the respiratory resistance increase is very fast, and comfortableness is relatively poor.Disposable use, cost is higher.
2,3M8822P2 anti-dust respirator
It is on the basis of Simple protecting mouth mask, has increased air bleeding valve, the vapour lock when exhaling to reduce, so the comfortableness when exhaling makes moderate progress, use cost is also high than Simple mask.
3, the single core anti-poison respirator of 3M3000 series
This mouth mask is provided with suction valve chip and expiration valve block simultaneously, so that the impact of the steam that filter cotton is not breathed out can keep dry state more enduringly, can significantly improve the filter efficiency of filter cotton.Material of main part has adopted plastics and rubber component, with filter cotton, filter pulp stacker and face shield independent design separately, has reduced use cost, and the replacing of filter cotton is very easy.But air-breathing very large with expiratory resistance, after tested, under regular service conditions, the respiratory pressure of this mouth mask is poor greater than 100pa, and comfortableness is relatively poor.
4,3M6100 demifacet type mask
Material of main part adopts plastics and rubber component, and with filter cotton, filter pulp stacker and face shield independent design separately, the replacing of filter cotton is very easy.This face shield is provided with the expiration valve block, has reduced the expiration flow resistance.Adopted the symmetric design of two filter cartridges, increased filter area, reduced air-breathing flow resistance, comfortableness will be higher than the single core anti-poison respirator of 3M3000 series.
5, positive-pressure type powered supplied air type anti-dust respirator
By the development of Japanese Hingyen Co. Ltd..By the electric feeding air pump, the fresh air after filtering directly to be delivered in the mouth mask, it is stable that air quantity keeps, and can effectively alleviate user's respiration force itself, breathe easily, comfortable wearing, safe and reliable.The employing capacity is 1800mAh, the power supply of 7.2V rechargeable lithium ion batteries, stream time 2.5～9 hours.Body dimension is 200 * 200 * 110mm, and this body weight is 684g.The said firm has also developed another kind of positive-pressure type powered supplied air type anti-dust respirator; It has adopted the breathing follow mode, the built-in small-sized air pump of mouth mask and the high detector of sensitivity can be according to user's control of breathing moment air mass flow (air quantity increase when air-breathing, and air quantity reduces during expiration), reach the rhythm that meets human body respiration most, realize the most natural breathing.The face body adopts silicon rubber, and is non-stimulated to the skin gentleness, wears comfortable.Be in the situation of 20L/min at average respiratory flow, the nominal operation time is about more than 10 hours.The gross weight of body and battery is about 368g.
Existing mining dust-proof mouth mask exists following defective and deficiency:
The mouth mask of front Four types is self-priming, namely overcomes the resistance that air flows through mouth mask and all will rely on the human lung to move.When the increase of human body labour intensity, when respiratory capacity increases, the resistance that air flows through mouth mask can increase thereupon, and human lung's burden also significantly increases thereupon.In general, overcome air and flow through square being directly proportional of the required mechanical power of porous resistance of medium and flow, so the comfortableness scope of these mouth masks is very narrow.Large when user's labour intensity, when respiratory capacity increases, it is very poor that its comfortableness can become, even can't satisfy basic demand.
The 5th kind of mouth mask alleviates human lung's burden by setting up dynamical system, should be the developing direction of anti-dust respirator from now on.From the data that present this Japanese firm of family announces, its Main Problems is the operating pressure that does not have rationally to set in the mouth mask.Because when human body was air-breathing, the pressure in the mouth mask can reduce, the pressure during expiration in the mouth mask can raise, and this all can increase lung's burden of human body.If adopt the malleation mode of operation, then can significantly lower the air-breathing burden of human body, increase the comfortableness when air-breathing, but the lung's burden can increase the people and exhale the time, thus the comfortableness when lowering human body and exhaling.If adopt the negative pressure mode of operation, then just in time opposite, can significantly lower the burden that human body is exhaled, increase the comfortableness when exhaling, but can increase the lung burden of people when air-breathing, lower the comfortableness of human body when air-breathing.
As seen, only have operating pressure periodically this change along with the human body expiration in the mouth mask, increase pressure when air-breathing reduces pressure during expiration, can satisfy under mouth mask security (preventing dust) condition, reaches best comfortableness.And this point the 5th kind of mouth mask is not available just.And the distinct disadvantage of this mouth mask is that cost is very high, because introduced high-sensitivity miniature pressure sensor and pressure control mechanism.Another shortcoming is that system weight is excessive, and employing carries the formula blower fan on the arm outward and power-supply system is very inconvenient for user, especially heavy worker.
The utility model content
On the basis that the utility model passes through the anti-dust performance of existing various anti-dust respirators, comfortableness, cost etc. are furtherd investigate and analyzed, a kind of structural design of dustproof mask is proposed.
The utility model is a kind of anti-dust respirator that dynamic property is breathed that has for the dust work place, it is characterized in that, the filter material of described anti-dust respirator adopts gauffer formula filter cotton, gauffer angle θ is less than 60 °, gauffer formula bus is parallel with gravity direction, respectively is provided with respectively the miniature high-speed centrifugal blower in the filter material downstream of described mouth mask exhaust outlet and air inlet.
The utility model is preferably, and described miniature high-speed centrifugal blower has the miniature electric air-supply exhaust system that comprises ventilating fan and air exhauster.
The utility model is preferably, and described blower fan is take efficient lithium battery as power supply.
The utility model is preferably, and power supply and the mine lamp power of described micro-centrifugal fan is designed to integrated morphology.
The utility model is preferably, and the operating pressure of described mouth mask inner chamber is set as the pressure-fired pattern, and the respiratory pressure of described mouth mask is poor to be controlled in the 30pa.
Superior effect of the present utility model is as follows:
1, under the prerequisite that satisfies human body respiration required air flow, adopt gauffer formula filter cotton structure, can significantly increase the effective filtration area of filter material, reduce air speed, reduce the filter material flow resistance, reduce inspiratory resistance.
2, according to fluid mechanics principle, whole flow channels structure is optimized analysis and design.Cancellation air inlet and gas outlet one-way membrane valve, under the condition that satisfies the structural member strength and stiffness, reduce structural member to the shielded area of air duct, each interchannel connects the employing smooth transition, reduce the local resistance of links, thereby lower the additional flow resistance that system architecture causes.
3, adopt that miniature electric send, exhaust system, adopt the miniature high-speed centrifugal blower.Variation and the comfortableness requirement of mouth mask internal pressure Changing Pattern and human lung burden respectively arrange one of centrifugal blower in filter material downstream, mouth mask air inlet place and exhaust ports during according to human body respiration, and the operating pressure of mouth mask inner chamber is set as the pressure-fired pattern.Can fully satisfy the pressure requirement of people when air-breathing, the increase control of pressure in the reasonable scope when human body was exhaled.The respiratory pressure of gauze mask is poor to be controlled in the 30pa, can be when satisfying security, improving comfortableness, so that the structural design of whole system, control are simplified.
4, power supply and the mine lamp power with micro-centrifugal fan is designed to integrated morphology, and adopts efficient lithium battery as fan power; Thus, described dustproof mask volume is little, lightweight, easy to carry.
Description of drawings
Fig. 1 is the schematic diagram of the described gauffer formula filter cotton structural form as described dustproof mask filter material of the utility model one embodiment.
Fig. 2 is the structural representation of the described dustproof mask of the utility model one embodiment.
Among the figure: the 10-filter material, the 20-ventilating fan, the 30-mouth mask is discharged blower fan, A-mouth mask airintake direction, B-mouth mask discharge directions, direction is breathed in the C-oral cavity.
The specific embodiment
Below, by reference to the accompanying drawings, the specific embodiment of the present utility model is described further.
As shown in Figure 1, the filter material 10 of the described mouth mask of the utility model one embodiment adopts gauffer formula filter cotton structure, and the gauffer angle θ of this filter cotton is less than 60 °, and gauffer formula bus is parallel with gravity direction.
Under the prerequisite that satisfies system's human body respiration required air flow, increase the effective filtration area of attached filter material 10, adopt gauffer formula filter cotton structure, significantly increase effective filtration area, reduce air speed, reduce the flow resistance of filter material 10, reduce inspiratory resistance.
The utility model is optimized analysis and design according to fluid mechanics principle to whole flow channels structure.Cancellation air inlet and gas outlet one-way membrane valve, under the condition that satisfies the structural member strength and stiffness, reduce structural member to the shielded area of air duct, each interchannel connects the employing smooth transition, reduce the local resistance of links, thereby lower the additional flow resistance that system architecture causes.
As shown in Figure 2, arrow A represents the mouth mask airintake direction among the figure, and arrow B represents the mouth mask discharge directions, and arrow C represents oral cavity breathing direction.Variation and the comfortableness requirement of mouth mask internal pressure Changing Pattern and human lung burden arrange respectively air exhauster 30 and ventilating fan 20 in filter material 10 downstreams of mouth mask exhaust outlet and air inlet during according to human body respiration.Mouth mask ventilating fan 20 and mouth mask air exhauster 30 form the miniature electric air supplying and exhausting system of miniature high-speed centrifugal blower.
The operating pressure of mouth mask inner chamber is set as pressure-fired pattern, namely, is controlled in the 30pa the respiratory pressure of gauze mask is poor, can be when satisfying security, improving comfortableness, so that the structural design of whole system, control are simplified.Thus, can fully satisfy the pressure requirement of people when air-breathing, the increase control of pressure in the reasonable scope when human body was exhaled.In addition, power supply and the mine lamp power of described micro-centrifugal fan are done the integrated morphology design.Adopt efficient lithium battery as fan power.Volume is little, and is lightweight, easy to carry.
The utility model is not limited only to above-described embodiment; to those skilled in the art, any apparent improvement of above-described embodiment of the present utility model being made or change can not exceed the embodiment of the present utility model that only illustrates by way of example and the protection domain of claims.
Claims (5)
1. anti-dust respirator that dynamic property is breathed that has that is used for the dust work place, it is characterized in that, the filter material of described anti-dust respirator adopts gauffer formula filter cotton, the gauffer angle θ of this filter material is less than 60 °, gauffer formula bus is parallel with gravity direction, respectively is provided with respectively the miniature high-speed centrifugal blower in the filter material downstream of described mouth mask exhaust outlet and air inlet.
2. the anti-dust respirator with dynamic property breathing according to claim 1 is characterized in that, described miniature high-speed centrifugal blower has the miniature electric air-supply exhaust system that comprises ventilating fan and air exhauster.
3. the anti-dust respirator with dynamic property breathing according to claim 2 is characterized in that the power supply of described blower fan is lithium battery.
4. according to claim 3 have an anti-dust respirator that dynamic property is breathed, and power supply and the mine lamp power of described micro-centrifugal fan is designed to integrated morphology.
5. according to claim 1 and 2 have an anti-dust respirator that dynamic property is breathed, and it is characterized in that, the operating pressure of described mouth mask inner chamber is set as the pressure-fired pattern, is controlled in the 30pa the respiratory pressure of described mouth mask is poor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220400665 CN202907841U (en) | 2012-08-13 | 2012-08-13 | Dustproof mask with dynamic breathing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220400665 CN202907841U (en) | 2012-08-13 | 2012-08-13 | Dustproof mask with dynamic breathing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202907841U true CN202907841U (en) | 2013-05-01 |
Family
ID=48156204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220400665 Expired - Fee Related CN202907841U (en) | 2012-08-13 | 2012-08-13 | Dustproof mask with dynamic breathing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202907841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793312A (en) * | 2012-08-13 | 2012-11-28 | 北京诚田恒业煤矿设备有限公司 | Dustproof mouth mask with dynamic breathing function |
-
2012
- 2012-08-13 CN CN 201220400665 patent/CN202907841U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793312A (en) * | 2012-08-13 | 2012-11-28 | 北京诚田恒业煤矿设备有限公司 | Dustproof mouth mask with dynamic breathing function |
| CN102793312B (en) * | 2012-08-13 | 2016-01-20 | 北京华创矿安科技有限公司 | There is the anti-dust respirator that dynamic property is breathed |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20160813 |