CN105782459A - Valve realizing automatic opening and closing based on humidity - Google Patents
Valve realizing automatic opening and closing based on humidity Download PDFInfo
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- CN105782459A CN105782459A CN201410797101.6A CN201410797101A CN105782459A CN 105782459 A CN105782459 A CN 105782459A CN 201410797101 A CN201410797101 A CN 201410797101A CN 105782459 A CN105782459 A CN 105782459A
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- hygroscopicity
- pore
- switch element
- flexible substrate
- basal wall
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Abstract
A valve realizing automatic opening and closing based on humidity is suitable for a base wall for separating circulation between an inner space and outside moisture and comprises an air hole and a switch unit, wherein the air hole penetrates through the base wall; the switch unit is arranged on the base wall, can deform through moisture absorption, and comprises a closing part corresponding to the air hole in position; the closing part and the air hole are non-closed when the switch unit is in a dry environment, and the air hole is closed by the closing part when the switch unit is in a humid environment. By means of the switch unit capable of deforming through moisture adsorption, the closing part and the air hole are non-closed when the switch unit is in the dry environment, if moisture exists in the inner space, the moisture can escape, the air hole is closed by the closing part when the switch unit is in the humid environment, the outside moisture is prevented from entering the inner space, and the inner space keeps dry.
Description
Technical field
The invention relates to a kind of valve, particularly relate to a kind of valve automatically switched according to humidity.
Background technology
General circuit equipment need to be in dry environment, is particularly at the circuit in the electrical equipment of open air, for instance the circuit on the circuit board of street lamp, owing to often there being aqueous vapor in outdoor environment, it is accordingly required in particular to prevents circuit board from contacting with extraneous aqueous vapor.One way in which is to be hedged off from the outer world by complete for circuit board, and attempt stops extraneous aqueous vapor to enter space residing for circuit, however forever and completely airtight be very difficult, once there be aqueous vapor to enter originally airtight space, make aqueous vapor be difficult to overflow again on the contrary.Therefore, how to design that a kind of structure is simple, cost is low and can apply in a large number include but not limited in outdoor electrical equipment to carry out the component of humid control, just become a theme being worth research.
Summary of the invention
Therefore, a wherein purpose of the present invention, namely providing a kind of valve automatically switched according to humidity.
Then, the valve that the present invention switchs automatically according to humidity is implemented in aspect at some, applies to a basal wall separating an inner space and the circulation of extraneous aqueous vapor, comprises a pore and a switch element.
This pore is through this basal wall.This switch element is arranged at this basal wall, aqueous vapor can be absorbed and deform, and include the position closure corresponding to this pore, when this switch element is in dry environment, this closure and this pore are non-airtight, and when this switch element is in wet environment, this closure closes this pore.
nullImplement in aspect at some，This switch element also includes the flexible substrate and the hygroscopicity expansion plate that combine mutually repeatedly，This flexible substrate is located adjacent to the side of this basal wall，This hygroscopicity expansion plate is positioned at opposite side relative to this flexible substrate，This closure is be located on this flexible substrate of the side close to this basal wall and position is corresponding to the closing projection of this pore，This flexible substrate is fixed on this basal wall relative to the other end closing projection，When this switch element is in dry environment，The length of this hygroscopicity expansion plate is less than this flexible substrate，This flexible substrate combined and this hygroscopicity expansion plate entirety bend towards the direction away from this basal wall，It is non-airtight for making this closing projection and this pore，When this switch element is in wet environment，This hygroscopicity expansion plate absorbs enough aqueous vapors and extends to length more than or equal to this flexible substrate，This flexible substrate combined and this hygroscopicity expansion plate entirety bend towards this basal wall，And make this closing projection close this pore.
Implementing in aspect at some, the material of this hygroscopicity expansion plate is hydroscopic plastic, and the hygral expansion coefficient of this hygroscopicity expansion plate is more than the hygral expansion coefficient of this flexible substrate.
Implementing in aspect at some, this flexible substrate and this hygroscopicity expansion plate are in this basal wall and are positioned at this external world in contrast to the side of this inner space.
Implementing in aspect at some, at least one section of this pore is conical butt, and this closing projection at least one section is corresponding conical butt.
Implementing in aspect at some, this switch element also includes an elastic ring being arranged on this this section Frusto-conical of this closing projection.
Implement in aspect at some, this switch element also includes a fixing plate being fixed on this basal wall, this closure be one by this fixing plate towards the hygroscopicity protruded stigma extended in this pore, when this switch element is in dry environment, this hygroscopicity protruded stigma with around defining the hole wall of this pore for contactless at least partly and to make this hygroscopicity protruded stigma and this pore be non-airtight, when this switch element is in wet environment, this hygroscopicity protruded stigma can absorb aqueous vapor and expand and close this pore.
Implement in aspect at some, this pore includes cylindrical hole section and a Frusto-conical frusto-conical hole section of a cylinder, this hygroscopicity protruded stigma includes cylindrical section and a Frusto-conical truncted cone section of a cylinder, aqueous vapor can be absorbed when this cylindrical section is in wet environment and expand, thus drive this truncted cone section to close the frusto-conical hole section of this pore and close this pore.
Implementing in aspect at some, this switch element also includes an elastic ring being arranged on this truncted cone section of this hygroscopicity protruded stigma.
Implementing in aspect at some, this fixing plate is in this basal wall and is positioned at this external world relative to the opposite side of this inner space.
Effect of the present invention is in that: the switch element deformed through absorbing aqueous vapor, when this switch element is in dry environment, this closure does not close this pore, if there is aqueous vapor inner space, can overflow, when this switch element is in wet environment, this closure closes this pore, extraneous aqueous vapor is stoped to enter, make this inner space keep dry, therefore really can reach the purpose of the present invention.
[accompanying drawing explanation]
Other the feature of the present invention and effect, clearly will present in describing in detail with reference to graphic embodiment, wherein:
Fig. 1 is a partial schematic sectional view, and illustrating in the first embodiment of the valve that the present invention switchs automatically according to humidity one, to close projection with a pore be non-airtight；
Fig. 2 is a partial schematic sectional view, illustrates that in the first embodiment of the valve that the present invention switchs automatically according to humidity, this closing projection closes this pore；
Fig. 3 is a partial schematic sectional view, illustrates that in the second embodiment of the valve that the present invention switchs automatically according to humidity, a hygroscopicity protruded stigma and a pore are non-airtight；And
Fig. 4 is a partial schematic sectional view, illustrates that in the second embodiment of the valve that the present invention switchs automatically according to humidity, this hygroscopicity protruded stigma closes this pore.
[detailed description of the invention]
Before the present invention is described in detail, it shall be noted that in the following description content, similar assembly is to be identically numbered to represent.
Consulting Fig. 1 and Fig. 2, the first embodiment of the valve that the present invention switchs automatically according to humidity, it is adaptable to a basal wall 6, this basal wall 6 separates the aqueous vapor circulation of an inner space 7 and extraneous 8.For example, this basal wall 6 is a wherein shell wall of the housing of the electrical equipment such as street lamp of an open air, separates the inner space 7 of this street lamp and the aqueous vapor circulation of extraneous 8, so that the circuit board 9 arranged in this inner space 7 keeps dry.
As described in prior art section, forever and completely airtight is very difficult.Therefore, the another way being different from described prior art is one air vent switch of design, makes stomatal closure stop aqueous vapor to enter when ambient humidity height, makes when ambient humidity is low pore open and assists aqueous vapor effusion.But, outdoor electrical equipment, for instance street lamp, generally the quantity of setting is various, and maintenance is not easily, may result in cost height if using accurate humidity chip senses humidity logic circuit of arranging in pairs or groups to control air vent switch and is likely to easy fault.
In order to solve this problem, the present invention comprises one through the pore 1 of this basal wall 6 and a switch element 2 according to the valve that humidity switchs automatically, this switch element 2 is arranged at this basal wall 6, and aqueous vapor can be absorbed and deform, and include the position closure (closing projection 23 described later) corresponding to this pore 1, when this switch element 2 is in dry environment, this closure and this pore 1 are for non-airtight, and when this switch element 2 is in wet environment, this closure closes this pore 1.
Specifically, in the present embodiment, this switch element 2 also includes flexible substrate 21 and the hygroscopicity expansion plate 22 repeatedly combined mutually, and this flexible substrate 21 is located adjacent to the side of this basal wall 6, and this hygroscopicity expansion plate 22 is positioned at opposite side relative to this flexible substrate 21.The material of this hygroscopicity expansion plate 22 is hydroscopic plastic, or claims high-hygroscopicity plastics, and the material of flexible substrate 21 is non-hygroscopic or agent of low hygroscopicity plastics.The hygral expansion coefficient of this hygroscopicity expansion plate 22 is more than the hygral expansion coefficient of this flexible substrate 21, that is, in time absorbing aqueous vapor, the swell increment of this hygroscopicity expansion plate 22 is more than the swell increment of this flexible substrate 21, and in time getting rid of aqueous vapor, the amount of contraction of this hygroscopicity expansion plate 22 is more than the amount of contraction of this flexible substrate 21.
This closure is be located on this flexible substrate 21 of the side close to this basal wall 6 and position is corresponding to the closing projection 23 of this pore 1, and the other end of this flexible substrate 21 this closing projection 23 relative is fixed on this basal wall 6.Wherein this flexible substrate 21 is for example combine with hygroscopicity expansion plate 22 in the way of viscose, is also fixed on this basal wall 6 in the way of viscose.But being not limited, the mode combined can also be in the way of extra quality injection type one-tenth, the first flexible substrate 21 of ejection formation and hygroscopicity expansion plate 22 one of which, after cooling ejection formation another one again；The mode being fixed on basal wall 6 can also be fix it with other fixtures such as screw etc..Additionally, this closing projection 23 is for example use same plastic material and one-body molded with this flexible substrate 21.
When this switch element 2 is in dry environment, the length of this hygroscopicity expansion plate 22 is less than this flexible substrate 21, this the flexible substrate 21 combined and this hygroscopicity expansion plate 22 entirety bend towards the direction away from this basal wall 6, make this closing projection 23 and this pore 1 for non-airtight, now the present invention is the state opened according to the valve that humidity switchs automatically, allow the air circulation of inner space 7 and extraneous 8, if there is aqueous vapor inner space 7, can overflow.When this switch element 2 is in wet environment, this hygroscopicity expansion plate 22 absorbs enough aqueous vapors and extends to length more than or equal to this flexible substrate 21, this the flexible substrate 21 and this hygroscopicity expansion plate 22 entirety that combine bend towards this basal wall 6, and make this closing projection 23 close this pore 1, now the present invention is the state closed according to the valve that humidity switchs automatically, intercept the air circulation of inner space 7 and extraneous 8, stop extraneous 8 aqueous vapors to enter.
In the present embodiment, this flexible substrate 21 and this hygroscopicity expansion plate 22 are in this basal wall 6 and are positioned at this external world 8 relative to the side of this inner space 7, but are not limited, as long as hygroscopicity expansion plate 22 can contact the air of extraneous 8.
This pore 1 is in the form of a truncated cone, but is not limited, it is also possible to be at least a part of which one section for conical butt；This closing projection 23 is also in the form of a truncated cone, but is not limited, it is also possible to be corresponding at least a part of which one section be conical butt, and so this closing projection 23 is less susceptible to be interfered with unlatching and the closed process of this pore 1.
This switch element 2 also includes an elastic ring 29 being arranged on this this section Frusto-conical of this closing projection 23, strengthens seal degree when this closing projection 23 closes this pore 1.Specifically, this closing projection 23 is provided with corresponding annular recess (non-icon) and installs for this elastic ring 29.For example, this elastic ring 29 is quality of rubber materials.
More than it is the embodiment of first embodiment, mainly it is combined as a whole by by the plastic sheet (flexible substrate 21 and hygroscopicity expansion plate 22) of two kinds of different moisture-absorption characteristicss, when there being humidity to change, the flexible of both sides plastics can be different, cause this structural bending, reach to automatically turn on according to humidity and the effect of sealed porosity.
Consult Fig. 3 and Fig. 4, second embodiment of the valve that the present invention switchs automatically according to humidity, roughly the same with first embodiment, suitable in the basal wall 6 of first embodiment, inner space 7, the environment such as extraneous 8, also comprise through the pore 1 of this basal wall 6 and this include the position switch element 2 corresponding to the closure (in the present embodiment for hygroscopicity protruded stigma 25 described later) of this pore 1.Its difference is in that, this switch element 2 also includes a fixing plate 24 being fixed on this basal wall 6, this closure be one by this fixing plate 24 towards the hygroscopicity protruded stigma 25 extended in this pore 1, the material of this hygroscopicity protruded stigma 25 has hydroscopic plastic.When this switch element 2 is in dry environment, this hygroscopicity protruded stigma 25 with around defining the hole wall of this pore 1 for contactless at least partly and make this hygroscopicity protruded stigma 25 and this pore 1 for non-airtight, now the present invention is the state opened according to the valve that humidity switchs automatically, allow the air circulation of inner space 7 and extraneous 8, if there is aqueous vapor inner space 7, can overflow.When this switch element 2 is in wet environment, this hygroscopicity protruded stigma 25 can absorb aqueous vapor and expand elongation and close this pore 1, now the present invention is the state closed according to the valve that humidity switchs automatically, intercepts the air circulation of inner space 7 and extraneous 8, stops extraneous 8 aqueous vapors to enter.In the present embodiment, this fixing plate 24 is that two ends are both secured to this basal wall 6, but is not limited, as long as hygroscopicity protruded stigma 25 can be supported, particularly when hygroscopicity protruded stigma 25 absorbs aqueous vapor and expands elongation to close this pore 1, this fixing plate 24 is enough to support.The material of this fixing plate 24 is not limited, it is possible to be non-hygroscopic material, agent of low hygroscopicity material or (height) hygroscopicity material.
In the present embodiment, this fixing plate 24 is in this basal wall 6 and is positioned at this external world 8 relative to the opposite side of this inner space 7, but is not limited.This hygroscopicity protruded stigma 25 is to extend this pore 1 on this fixing plate 24 and by extraneous 8 towards the direction of inner space 7, and the opening in the contiguous external world 8 of this pore 1 do not closed by this fixing plate 24, and this hygroscopicity protruded stigma 25 can contact the air in the external world 8.
Specifically, in the present embodiment, this pore 1 includes cylindrical hole section 11 and a Frusto-conical frusto-conical hole section 12 of a cylinder, this hygroscopicity protruded stigma 25 includes that one is cylindrical and external diameter is less than the cylindrical section 251 of cylindrical hole section 11 internal diameter and a Frusto-conical truncted cone section 252, this cylindrical section 251 is hydroscopic plastic, and this truncted cone section 252 is non-hygroscopic or agent of low hygroscopicity plastics.Aqueous vapor can be absorbed when this hygroscopicity protruded stigma 25 is in wet environment and expand, and mainly this cylindrical section 251 expands, and makes this truncted cone section 252 close the frusto-conical hole section 12 of this pore 1 and close this pore 1.But it is not limited, as long as this pore 1 can be closed when aqueous vapor expands when this hygroscopicity protruded stigma 25 absorbs, and when not absorbing aqueous vapor, keeps the air in inner space 7 and the external world 8 can circulate through this pore 1.Wherein this truncted cone section 252 uses the reason of non-hygroscopic or agent of low hygroscopicity plastics to be in that when avoiding inner space 7 for high humility to cause that this truncted cone section 252 is in swelling state all the time.In the present embodiment, the width (vertical paper direction) of this fixing plate 24 makes the air of extraneous 8 can enter this pore 1 less than the internal diameter of this pore 1, but it is not limited, can also be that suitable place is provided with the modes such as perforation (not shown) and enables air to flowing on this fixing plate 24, or this fixing plate is be connected with other fixtures (not shown) and fix in the way of separately with this basal wall.
Similarly, this switch element 2 also includes this elastic ring 29, is arranged on this truncted cone section 252 of this hygroscopicity protruded stigma 25, to strengthen seal when pore 1 is closed.
More than it is the embodiment of the second embodiment, mainly automatically turns on and sealed porosity 1 according to humidity with the change shunk by the expanding of plastic material being directed through this hygroscopicity protruded stigma 25.
In sum, the switch element 2 deformed through aqueous vapor can be absorbed, when this switch element 2 is in dry environment, this closure (this closing projection 23 or this hygroscopicity protruded stigma 25) and this pore 1 are for non-airtight, if there is aqueous vapor inner space 7, can overflow, when this switch element 2 is in wet environment, this closure closes this pore 1, stop extraneous 8 aqueous vapors to enter, make this inner space 7 keep dry, therefore really can reach the purpose of the present invention.
Above in conjunction with accompanying drawing, the specific embodiment of the present invention and embodiment are elaborated, but the present invention is not limited to the above-described embodiment and examples, in the ken that those skilled in the art possess, it is also possible to make a variety of changes without departing from the inventive concept of the premise.
Claims (10)
1. the valve automatically switched according to humidity, it is adaptable to separates the basal wall of an inner space and the circulation of extraneous aqueous vapor, it is characterised in that comprise:
One pore, through this basal wall；And
One switch element, it is arranged at this basal wall, aqueous vapor can be absorbed and deform, and include the position closure corresponding to this pore, when this switch element is in dry environment, this closure and this pore are non-airtight, and when this switch element is in wet environment, this closure closes this pore.
null2. the valve automatically switched according to humidity according to claim 1，It is characterized in that，This switch element also includes the flexible substrate and the hygroscopicity expansion plate that combine mutually repeatedly，This flexible substrate is located adjacent to the side of this basal wall，This hygroscopicity expansion plate is positioned at opposite side relative to this flexible substrate，This closure is be located on this flexible substrate of the side close to this basal wall and position is corresponding to the closing projection of this pore，This flexible substrate is fixed on this basal wall relative to the other end closing projection，When this switch element is in dry environment，The length of this hygroscopicity expansion plate is less than this flexible substrate，This flexible substrate combined and this hygroscopicity expansion plate entirety bend towards the direction away from this basal wall，It is non-airtight for making this closing projection and this pore，When this switch element is in wet environment，This hygroscopicity expansion plate absorbs enough aqueous vapors and extends to length more than or equal to this flexible substrate，This flexible substrate combined and this hygroscopicity expansion plate entirety bend towards this basal wall，And make this closing projection close this pore.
3. the valve automatically switched according to humidity according to claim 2, it is characterised in that the material of this hygroscopicity expansion plate is hydroscopic plastic, the hygral expansion coefficient of this hygroscopicity expansion plate is more than the hygral expansion coefficient of this flexible substrate.
4. the valve automatically switched according to humidity according to claim 2, it is characterised in that this flexible substrate and this hygroscopicity expansion plate are in this basal wall and are positioned at this external world in contrast to the side of this inner space.
5. the valve automatically switched according to humidity according to claim 2, it is characterised in that at least one section of this pore is conical butt, this closing projection at least one section is corresponding conical butt.
6. the valve automatically switched according to humidity according to claim 5, it is characterised in that this switch element also includes an elastic ring being arranged on this this section Frusto-conical of this closing projection.
7. the valve automatically switched according to humidity according to claim 1, it is characterized in that, this switch element also includes a fixing plate being fixed on this basal wall, this closure be one by this fixing plate towards the hygroscopicity protruded stigma extended in this pore, when this switch element is in dry environment, this hygroscopicity protruded stigma with around defining the hole wall of this pore for contactless at least partly and to make this hygroscopicity protruded stigma and this pore be non-airtight, when this switch element is in wet environment, this hygroscopicity protruded stigma can absorb aqueous vapor and expand and close this pore.
8. the valve automatically switched according to humidity according to claim 7, it is characterized in that, this pore includes cylindrical hole section and a Frusto-conical frusto-conical hole section of a cylinder, this hygroscopicity protruded stigma includes cylindrical section and a Frusto-conical truncted cone section of a cylinder, aqueous vapor can be absorbed when this cylindrical section is in wet environment and expand, thus drive this truncted cone section to close the frusto-conical hole section of this pore and close this pore.
9. the valve automatically switched according to humidity according to claim 8, it is characterised in that this switch element also includes an elastic ring being arranged on this truncted cone section of this hygroscopicity protruded stigma.
10. the valve automatically switched according to humidity according to claim 7, it is characterised in that this fixing plate is in this basal wall and is positioned at this external world relative to the opposite side of this inner space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797101.6A CN105782459A (en) | 2014-12-19 | 2014-12-19 | Valve realizing automatic opening and closing based on humidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797101.6A CN105782459A (en) | 2014-12-19 | 2014-12-19 | Valve realizing automatic opening and closing based on humidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105782459A true CN105782459A (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410797101.6A Pending CN105782459A (en) | 2014-12-19 | 2014-12-19 | Valve realizing automatic opening and closing based on humidity |
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| Country | Link |
|---|---|
| CN (1) | CN105782459A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111532605A (en) * | 2020-06-24 | 2020-08-14 | 金精 | Dampproofing storage device of ventilative formula in crops seed |
| CN112744140A (en) * | 2019-10-30 | 2021-05-04 | 现代自动车株式会社 | Humidity responsive seat control apparatus for vehicle |
| CN112744140B (en) * | 2019-10-30 | 2024-04-26 | 现代自动车株式会社 | Humidity responsive seat control apparatus for vehicle |
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| US4450375A (en) * | 1982-11-12 | 1984-05-22 | Kiwi Coders Corporation | Piezoelectric fluid control device |
| EP0907852B1 (en) * | 1996-05-29 | 2000-07-19 | Flight Refuelling Limited | A flapper valve |
| GB2422900A (en) * | 2005-01-21 | 2006-08-09 | Mark Christopher Turpin | Actuator device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112744140A (en) * | 2019-10-30 | 2021-05-04 | 现代自动车株式会社 | Humidity responsive seat control apparatus for vehicle |
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