CN107159507A - Senser element protective layer coats frock and technique, senser element and air conditioner - Google Patents

Senser element protective layer coats frock and technique, senser element and air conditioner Download PDF

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Publication number
CN107159507A
CN107159507A CN201710395881.5A CN201710395881A CN107159507A CN 107159507 A CN107159507 A CN 107159507A CN 201710395881 A CN201710395881 A CN 201710395881A CN 107159507 A CN107159507 A CN 107159507A
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CN
China
Prior art keywords
senser element
protective layer
frock
sensing hole
conductive part
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Granted
Application number
CN201710395881.5A
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Chinese (zh)
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CN107159507B (en
Inventor
王丽娜
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Guangzhou Hualing Refrigeration Equipment Co Ltd
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Guangzhou Hualing Refrigeration Equipment Co Ltd
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Priority to CN201710395881.5A priority Critical patent/CN107159507B/en
Publication of CN107159507A publication Critical patent/CN107159507A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/02Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
    • B05C1/027Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • B05D1/32Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B05D1/322Removable films used as masks
    • B05D1/325Masking layer made of peelable film

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

The present invention discloses a kind of senser element protective layer coating frock and technique, senser element and air conditioner; wherein; the senser element is used to sense ambient parameter; the senser element includes body and is connected to the conductive part of the body; the body has the sensing hole with environmental communication; it is described protective layer used to isolate the conductive part and environment; the senser element protective layer coating frock includes separator; the separator is located between the sensing hole and the conductive part, to prevent the sensing hole from being blocked by the protective layer.Technical solution of the present invention can reduce technology difficulty, improve the reliability of senser element.

Description

Senser element protective layer coats frock and technique, senser element and air conditioner
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of senser element protective layer coating frock and technique, sensing Device and air conditioner.
Background technology
In order to maintain the normal operation of the electrical equipments such as air conditioner, wherein be typically provided with senser element, so as to temperature, wet The ambient parameters such as degree are sensed.Senser element is electrically connected on printed circuit board (PCB), during electrical equipment longtime running, Water, oxygen in environment etc. are easily caused senser element failure.Therefore, generally after senser element is connected with external circuit, It is armor coated on senser element, to ensure the reliability of its work.However, in order to be sensed to ambient parameter, sensing Device also has the sensing hole with environmental communication, during armor coated, and the sensing easy protected seam in hole is blocked, and is led Cause armor coated technology difficulty increase, and be easily caused senser element can not normal work.
The content of the invention
The main object of the present invention is to propose a kind of senser element protective layer coating frock, it is intended to solve the sensor part Sensing hole the problem of easily blocked, the technology difficulty of reduction protective layer coating improves the reliability of senser element.
Improve the reliability of senser element.
To achieve the above object, senser element protective layer coating frock proposed by the present invention, wherein, senser element is used to feel Ambient parameter is surveyed, the senser element includes body and is connected to the conductive part of the body, and the body has to be connected with environment Logical sensing hole, described protective layer used to isolate the conductive part and environment, the senser element protective layer coating frock includes Separator, the separator is located between the sensing hole and the conductive part, to prevent the sensing hole by the protective layer Closure.
Preferably, the separator includes isolation pad pasting, and the isolation pad pasting includes isolation part, and the isolation part covers institute State the opening in sensing hole.
Preferably, the isolation pad pasting also includes the first Handheld Division, and first Handheld Division is connected with the isolation part, and First Handheld Division extends to the outside of the senser element.
Preferably, the hardness number of the isolation pad pasting is more than or equal to 3H.
Preferably, the material of the isolation pad pasting is oleophobic material.
Preferably, the separator includes batching pig, and the batching pig includes cock body, and the cock body is removably connected to institute State in sensing hole.
Preferably, the batching pig also includes the second Handheld Division, and second Handheld Division is connected to the cock body, and at least Part second handgrip part is in outside the sensing hole.
Preferably, outer one end without leave close to second Handheld Division of the cock body is to away from second Handheld Division One end is set in tapered, and aperture of the maximum outside diameter more than the sensing hole of the cock body, and the length of the cock body is less than institute State the depth in sensing hole.
Preferably, the batching pig also includes stopper section, and the stopper section is enclosed around the sensing hole.
The present invention also proposes a kind of senser element protective layer coating processes, comprises the following steps:The senser element is protected Sheath coating frock is installed on the senser element, wherein, the senser element is used to sense ambient parameter, the sensor Part includes body and is connected to the conductive part of the body, and the body has the sensing hole with environmental communication, the protective layer To isolate the conductive part and environment, the senser element protective layer coating frock includes separator, and the separator is located at Between the sensing hole and the conductive part, to prevent the sensing hole from being blocked by the protective layer;It is armor coated in described On the conductive part of senser element;After the conductive part of the senser element is armor coated, by the senser element protective layer Coating frock is dismantled from the senser element.
The present invention also proposes a kind of senser element, and the senser element includes senser element protective layer and coats frock, described Senser element is used to sense ambient parameter, and the senser element includes body and is connected to the conductive part of the body, described Body has the sensing hole with environmental communication, and described protective layer used to isolate the conductive part and environment, the senser element is protected Layer coating frock includes separator, and the separator is located between the sensing hole and the conductive part, to prevent the sensing Hole is blocked by the protective layer.
The present invention also proposes a kind of air conditioner, and the air conditioner includes senser element, and the senser element is used to sense ring Border parameter, the senser element includes body and is connected to the conductive part of the body, and the body has and environmental communication Hole is sensed, it is armor coated on the senser element in the presence of senser element protective layer coating frock, to isolate The conductive part and environment, wherein, the senser element protective layer coating frock includes separator, and the separator is located at described Sense between hole and the conductive part, to prevent the sensing hole from being blocked by the protective layer.
In technical solution of the present invention, senser element is used to sense ambient parameter, including body and the conduction for being connected to body Portion, body has the sensing hole with environmental communication, and to ambient parameters such as sensing temperature, humidity, conductive part is to connect sensing Device and external circuit, to realize that the signal between senser element and external circuit is transmitted.It is protective layer used to isolate conductive part and environment, In order to avoid water, oxygen in air etc. produces corrosion to conductive part, its electric conductivity is caused to decline and make senser element normal Work.In order to armor coated during senser element, it is to avoid protective layer closure sensing hole, in senser element protective layer It is coated in the presence of coating frock, wherein, senser element protective layer coating frock includes separator, and separator is located at sensing Between hole and conductive part, so as to realize the isolation of sensing hole and conductive part, to prevent sensing hole protected seam closure, guarantor is reduced The technology difficulty of sheath coating, improves the reliability of senser element.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the structural representation that inventive sensor part protective layer coats the embodiment of frock one;
Fig. 2 is the structural representation that inventive sensor part protective layer coats another embodiment of frock;
Fig. 3 is the structural representation that inventive sensor part protective layer coats the another embodiment of frock;
Fig. 4 is the schematic flow sheet of inventive sensor part protective layer coating processes.
Drawing reference numeral explanation:
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that related in the embodiment of the present invention directionality indicate (such as up, down, left, right, before and after ...), Then directionality indicate to be only used for explain relative position relation under a certain particular pose (as shown in drawings) between each part, Motion conditions etc., if the particular pose changes, directionality indicates also correspondingly therewith to change.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, being somebody's turn to do " first ", " second " etc. Description be only used for describing purpose, and it is not intended that indicating or implying its relative importance or implicit indicate indicated skill The quantity of art feature.Thus, " first " is defined, at least one spy can be expressed or be implicitly included to the feature of " second " Levy.In addition, the technical scheme between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy Based on enough realizations, when the combination appearance of technical scheme is conflicting or can not realize it will be understood that the knot of this technical scheme Conjunction is not present, also not within the protection domain of application claims.
The present invention proposes a kind of senser element protective layer coating frock.
In embodiments of the present invention, as shown in figure 1, senser element 100 is used to sense ambient parameter, senser element 100 is wrapped Include body 110 and be connected to the conductive part 120 of body 110, body 110 has the sensing hole 111 with environmental communication, protective layer used To isolate conductive part 120 and environment, senser element protective layer coating frock includes separator, and separator is located at the sensing He of hole 111 Between conductive part 120, to prevent the sensing protected seam of hole 111 closure.
Specifically, senser element 100 can be sensed to the ambient parameter including temperature, humidity etc., such as it is warm Sensor, humidity sensor etc. are spent, and is disposed in the interior, or is arranged in the household electrical appliance such as air conditioner, refrigerator, so that user Or relevant device can obtain current ambient parameter.Senser element 100 includes body 110 and is connected to the conduction of body 110 Sensing element and signal processing circuit are generally packaged with portion 120, body 110, and with the sensing hole 111 with environmental communication, Sensing hole 111 enables the air in environment to be in contact with sensing element, and joins environment in the presence of signal processing circuit Number is converted to electric signal.Signal processing circuit and external circuit of the conductive part 120 to connect senser element, conductive part 120 are usual For pin, it is made up, is connected by soldering or the like on printed circuit board (PCB) 400 of metal materials such as copper, aluminium, and then realizes and outer The electrical connection of circuit.During long-term use, water, oxygen in air etc. are easily caused the conductive part 120 of metal material Corrosion so that senser element 100 can not normal work.In order to ensure the reliability connected between senser element 100 and external circuit, It is often armor coated on the surface of senser element 100 after the completion of connection.Wherein, protective layer can be anti-humidity oil etc., with every From the conductive part 120 and environment of senser element 100, extend the service life of conductive part 120.
In order to avoid protective layer closure sensing hole 111, it is coated in the presence of senser element protective layer coating frock Technique.Wherein, senser element protective layer coating frock include separator, separator be located at sensing hole 111 and conductive part 120 it Between, to realize the physical isolation between sensing hole 111 and conductive part 120, it is to avoid form the material such as anti-humidity oil of protective layer from leading Electric portion 120, which is flowed in sensing hole 111, blocks it.There are a variety of set-up modes in separator, for example, separator can cover at sense On the opening of gaging hole 111, sense of closure gaging hole 111, in case protective layer material enters from the opening in sensing hole 111 wherein causes envelope It is stifled, specifically, separation layer can be cage, isolation pad pasting etc., hereinafter also it will be apparent from.Certainly, separator can also be sealed Get lodged in sensing hole 111, in order to avoid protective layer material is flowed into sensing hole 111 during armor coated, coating protective layer Afterwards, then by separator disassembled from senser element 100, make sensing hole 111 and environmental communication, to cause senser element 100 normal works, specifically, separator can be batching pig etc., batching pig both can be preprepared, can also pass through Curable material (such as paraffin) is instilled into sensing hole 111 to be made, and sense is taken out after protective layer has been coated, then by batching pig Gaging hole 111, hereinafter also will be apparent from.Or, separator can also be set around the conductive part 120 of senser element, To cause sensing hole 111 and conductive part 120 to be isolated, it is to avoid the closure sensing hole 111 during armor coated.
In technical solution of the present invention, senser element is used to sense ambient parameter, including body 110 and is connected to body 110 Conductive part 120, body 110 has sensing hole 111 with environmental communication, to ambient parameters such as sensing temperature, humidity, conductive Portion 120 is to connect senser element and external circuit, to realize that the signal between senser element and external circuit is transmitted.It is protective layer used with Isolate conductive part 120 and environment, in order to avoid water, oxygen in air etc. produces corrosion to conductive part 120, cause under its electric conductivity Drop and make senser element can not normal work.In order to armor coated during senser element, it is to avoid protective layer block Hole 111 is sensed, is coated in the presence of senser element protective layer coating frock, wherein, senser element protective layer coating work Dress includes separator, and separator is located between sensing hole 111 and conductive part 120, so as to realize sensing hole 111 and conductive part 120 Isolation, with prevent sensing the protected seam of hole 111 closure, reduce protective layer coating technology difficulty, improve senser element Reliability.
In one embodiment of this invention, as shown in figure 1, separator includes isolation pad pasting 200, isolation pad pasting 200 includes Isolation part 210, the opening in the covering sensing hole 111 of isolation part 210.In coating procedure, by the way that isolation pad pasting 200 is covered in into sense In the opening of gaging hole 111, sensing hole 111 is temporarily isolating with environment, so as to be prevented effectively from the protective layer material of flowing from Opening flows into the inside closure sensing hole 111 of sensing hole 111.Also, the attaching process for isolating pad pasting 200 is simple, and isolation pad pasting It is not present and directly contacts between 200 inwall with sensing hole 111, the pollution to sensing the inwall of hole 111 can be prevented effectively from, so that Sensing precision of the senser element during subsequent sense ambient parameter is advantageously ensured that, meanwhile, isolation pad pasting 200 also will not be right The injury of the sensing element of the sensing bottom of hole 111 is likely to be present in, so that senser element has higher reliability.
Further, as shown in figure 1, isolation pad pasting 200 also includes the first Handheld Division 220, the first Handheld Division 220 is with isolating Portion 210 is connected, and the first Handheld Division 220 extends to the outside of senser element 100.After armor coated, pad pasting will be isolated 200 from senser element when tearing, and operating personnel or machinery are easy in the first Handheld Division 220 extended to outside senser element 100 The operation of hand, and direct touching in operation to senser element can be reduced as far as possible, be conducive to avoiding electrostatic, contact pressure The factors such as power cause damage to senser element.
Further, the hardness number of isolation pad pasting 200 is more than or equal to 3H, and the larger isolation pad pasting 200 of hardness number has Preferable structural strength, and be easy to operation, can be prevented effectively from isolation pad pasting 200 be broken, distort etc. cause to sensor The pollution of part, and caused positioning difficulty increase.
Further, the material of isolation pad pasting 200 is oleophobic material, it is generally the case that protective layer is by oiliness such as anti-humidity oils Material is formed.In order to avoid protective layer closure sensing hole 111, it is made by pasting oleophobic material at the opening in sensing hole 111 Isolation pad pasting 200, further enhancing sensing hole 111 and protective layer between chemical isolation effect so that protective layer is difficult to Sensing hole 111 is flowed into gap between isolation pad pasting 200 and senser element, the reliable of protective layer coating processes is improved Property.
In another embodiment of the invention, as shown in figure 3, separator includes batching pig 300, batching pig 300 includes plug Body 310, cock body 310 is removably connected in sensing hole 111.During armor coated, cock body 310 is located at sensing hole Hole 111 is sensed to block, it is to avoid protective layer material enters sensing hole 111 in 111.After coating is complete, then by batching pig 300 from Sense in hole 111 and remove, to enable senser element normal work.There are a variety of set-up modes in batching pig 300, for example, by Relatively low curable materials are instilled with the chemical compatibility of the sensing inner-wall material of hole 111 forms in sensing hole 111, is protected in coating Layer after, then by the batching pig 300 after solidification from sensing hole 111 in take out.Or, batching pig 300 is prepared in advance, is protected in coating Filled between sheath in sensing hole 111, in order to avoid protective layer closure sensing hole 111, after armor coated, then by batching pig 300 take out.
Further, batching pig 300 also includes the second Handheld Division 320, and the second Handheld Division 320 is connected to cock body 310, and extremely The second Handheld Division of small part 320 is located at outside sensing hole 111, and the setting of the second Handheld Division 320 is easy to after the completion of protective layer is coated Batching pig 300 is taken out from sensing hole 111.
Further, outer one end without leave close to the second Handheld Division 320 of cock body 310 is to away from the second Handheld Division 320 One end is set in tapered, and the maximum outside diameter of cock body 310 is more than the aperture for sensing hole 111, and the length of cock body 310 is less than sensing hole 111 depth, during make it that cock body 310 is filled in sensing hole 111, is only in contact with sensing hole 111 close to the part of opening, Pollute so as to the inwall for avoiding 310 pairs of cock body sensing holes 111 or the sensing element for being likely to be present in the sensing bottom of hole 111 or Infringement, improves the reliability of senser element sensing.
In another embodiment of the present invention, as shown in figure 3, batching pig 300 also includes stopper section 330, stopper section 330 is enclosed Around sensing hole 111, so that further isolation sensing hole 111 and conductive part 120, it is to avoid protective layer is from batching pig 300 Enter the inside of sensing hole 111 in gap between sensing hole 111 and block sensing hole 111.
The present invention also proposes a kind of senser element protective layer coating processes, as shown in figure 4, comprising the following steps:
Step S100:Senser element protective layer coating frock is installed on senser element, wherein, senser element protection The concrete structure of layer coating frock with reference to above-described embodiment, due to this senser element protective layer coating processes employ it is above-mentioned all Whole technical schemes of embodiment, therefore all beneficial effects that at least technical scheme with above-described embodiment is brought, This is no longer repeated one by one;
Specifically, by by separator isolation sensing hole and conductive part, to reduce the positioning in protective layer coating procedure Difficulty.
Step S200:It is armor coated on the conductive part of senser element;
In protective layer coating procedure, because separator has isolated sensing hole and conductive part, therefore without carrying out again precisely Positioning in case protective layer closure sensing hole, simplify the difficulty of coating, improve the efficiency of coating.
Step S300:After the conductive part of senser element is armor coated, by senser element protective layer coat frock from Dismantled on senser element.
After coating is complete, senser element protective layer coating frock is pulled down, to cause sensing hole and environmental communication, makes sensing Device is able to normal work.
The present invention also proposes a kind of senser element, and the senser element includes senser element protective layer and coats frock, the sensing The concrete structure of device protecting layer coating frock is with reference to above-described embodiment, because this senser element employs above-mentioned all embodiments Whole technical schemes, therefore all beneficial effects for being brought of technical scheme at least with above-described embodiment, herein no longer Repeat one by one.
The present invention also proposes a kind of air conditioner, and air conditioner includes senser element, and senser element is used to sense ambient parameter, passed Inductor component includes body and is connected to the conductive part of body, and body has the sensing hole with environmental communication, in senser element protection It is armor coated on senser element in the presence of layer coating frock, to isolate conductive part and environment, wherein, the senser element is protected The concrete structure of sheath coating frock is with reference to above-described embodiment, because this air conditioner employs whole skills of above-mentioned all embodiments Art scheme, therefore all beneficial effects that at least technical scheme with above-described embodiment is brought, this is no longer going to repeat them.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly It is included in other related technical fields in the scope of patent protection of the present invention.

Claims (12)

1. a kind of senser element protective layer coats frock, it is characterised in that the senser element is used to sense ambient parameter, described Senser element includes body and is connected to the conductive part of the body, and the body has the sensing hole with environmental communication, described It is protective layer used to isolate the conductive part and environment, the senser element protective layer coating frock includes separator, the isolation Part is located between the sensing hole and the conductive part, to prevent the sensing hole from being blocked by the protective layer.
2. senser element protective layer as claimed in claim 1 coats frock, it is characterised in that the separator includes isolation and pasted Film, the isolation pad pasting includes isolation part, and the isolation part covers the opening in the sensing hole.
3. senser element protective layer as claimed in claim 2 coats frock, it is characterised in that the isolation pad pasting also includes the One Handheld Division, first Handheld Division is connected with the isolation part, and first Handheld Division extends to the senser element It is outside.
4. senser element protective layer as claimed in claim 2 or claim 3 coats frock, it is characterised in that the isolation pad pasting it is hard Angle value is more than or equal to 3H.
5. senser element protective layer as claimed in claim 2 or claim 3 coats frock, it is characterised in that the material of the isolation pad pasting Expect for oleophobic material.
6. senser element protective layer as claimed in claim 1 coats frock, it is characterised in that the separator includes isolation Plug, the batching pig includes cock body, and the cock body is removably connected in the sensing hole.
7. senser element protective layer as claimed in claim 6 coats frock, it is characterised in that the batching pig also includes second Handheld Division, second Handheld Division is connected to the cock body, and at least partly described second handgrip part is in outside the sensing hole.
8. senser element protective layer as claimed in claim 7 coats frock, it is characterised in that the cock body it is outer close without leave One end of second Handheld Division is set to one end away from second Handheld Division in tapered, and the maximum outside diameter of the cock body More than the aperture in the sensing hole, the length of the cock body is less than the depth in the sensing hole.
9. senser element protective layer as claimed in claim 6 coats frock, it is characterised in that the batching pig also includes backstop Enclose around the sensing hole portion, the stopper section.
10. a kind of senser element protective layer coating processes, it is characterised in that comprise the following steps:
Senser element protective layer coating frock is installed on the senser element, wherein, the senser element protective layer Frock is coated as any one of claim 1 to 9;
It is armor coated on the conductive part of the senser element;
After the conductive part of the senser element is armor coated, the senser element protective layer is coated into frock and passed from described Dismantled on inductor component.
11. a kind of senser element, it is characterised in that the senser element includes biography as claimed in any one of claims 1-9 wherein Inductor component protective layer coats frock.
12. a kind of air conditioner, it is characterised in that the air conditioner includes senser element, the senser element is used to sense environment Parameter, the senser element includes body and is connected to the conductive part of the body, and the body has the sense with environmental communication Gaging hole, it is armor coated on the senser element in the presence of senser element protective layer coating frock, to isolate Conductive part and environment are stated, wherein, the senser element protective layer coats frock as any one of claim 1 to 9.
CN201710395881.5A 2017-05-27 2017-05-27 Sensor device protective layer coating tool and process, sensor device and air conditioner Active CN107159507B (en)

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CN107159507B CN107159507B (en) 2020-08-14

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CN116197099A (en) * 2023-03-10 2023-06-02 厦门金诺花科学仪器有限公司 Preparation method of nano-upgrading reusable needle

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CN106537131A (en) * 2014-06-27 2017-03-22 斯佩克传感器有限责任公司 Printed gas sensor
CN206038045U (en) * 2016-08-15 2017-03-22 深圳佰维存储科技股份有限公司 Temperature and humidity sensor's packaging structure

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Publication number Priority date Publication date Assignee Title
CN101610895A (en) * 2006-11-23 2009-12-23 荷兰应用自然科学研究组织 The method and apparatus of production part coated article
CN201917012U (en) * 2011-01-17 2011-08-03 松下电器产业株式会社 Indoor unit of air conditioner
CN203680090U (en) * 2014-01-15 2014-07-02 三菱重工东方燃气轮机(广州)有限公司 Novel stopper for covering blade cooling hole of combustion engine
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CN116197099A (en) * 2023-03-10 2023-06-02 厦门金诺花科学仪器有限公司 Preparation method of nano-upgrading reusable needle
CN116197099B (en) * 2023-03-10 2023-11-07 厦门金诺花科学仪器有限公司 Preparation method of nano-upgrading reusable needle

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