CN206420579U

CN206420579U - Temperature sensor NTC thermistor

Info

Publication number: CN206420579U
Application number: CN201620497882.1U
Authority: CN
Inventors: 曾招停
Original assignee: Shenzhen Temp-Sen Sensor Co Ltd
Current assignee: Shenzhen tepusheng Technology Co.,Ltd.
Priority date: 2016-05-27
Filing date: 2016-05-27
Publication date: 2017-08-18
Anticipated expiration: 2026-05-27

Abstract

The utility model discloses a kind of temperature sensor NTC thermistor, including thermistor substrate, the first plain conductor, the second plain conductor and encapsulated layer, it is characterized in that, first plain conductor is welded on the first surface of thermistor substrate, second plain conductor is welded on the second surface of thermistor substrate, wherein the first plain conductor and the second plain conductor clamp thermistor substrate；The thermistor substrate and the first plain conductor, the second plain conductor are externally provided with one layer of encapsulated layer.The utility model has strong simple in construction, easy to use, good airproof performance, insulating properties height, weather resistance energy, reliability height, low cost and other advantages; its reaction time is fast; response is rapid; stability is good and it can protection equipment well; it can be widely used for fire-fighting heat detector, water heater temperature sensor industry.

Description

Temperature sensor NTC thermistor

Technical field

The utility model is related to sensitive components technical field, more particularly to a kind of temperature sensor NTC thermistor.

Background technology

Temperature is one of seven big physical quantitys.NTC thermistor is a kind of thermally sensitive semiconductor ceramic element, is had The characteristics of reaction is fast, precision is high, stability is good, cost is low, is widely used in all kinds of occasions relevant with temperature.Common encapsulation Mode has epoxy resin enclosed, SMD encapsulation, diode package, single-ended glass-encapsulated, thin-film thermistor etc..

In fire-fighting domain, temperature and cigarette sense are widely used to prevent, control fire, and provide signal alarm.But underground The humidity in garage is very big, especially southern plum rain season, all metopes, and smallpox, ground is all damp.It is this to dislike Bad weather, very high requirement is proposed to the waterproof requirement of temperature sensor.The packaged type often having at present has epoxy resin The small blackhead type of encapsulation, when thermistor is inverted, long-term ponding causes under resistance between the head lead of thermistor Drop or short circuit and fail, have Market Feedback, the annual resulting expense for safeguarding replacing inductor is very high.Often have at present An other packaged type is the lengthening version of the small blackhead of epoxy encapsulation.That is, epoxy resin enclosed extended length is arrived The limit, to prevent ponding from directly permeating, but between lead and epoxy resin, because the thermal coefficient of expansion of different materials is different, And interfacial effect, capillarity is easily formed between epoxy resin and lead, particularly under conditions of loading load, aqueous vapor Also it is easy to infiltration and enters to cause bad erroneous judgement alarm.

Utility model content

The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.Therefore, this reality It is to provide a kind of temperature sensor NTC thermistor with a new purpose, it is intended to improve the sealing of temperature sensor Property.

To achieve the above object, the utility model provides a kind of temperature sensor NTC thermistor, including thermistor Substrate, the first plain conductor, the second plain conductor and encapsulated layer, first plain conductor are welded on the of thermistor substrate On one surface, the second plain conductor is welded on the second surface of thermistor substrate, wherein the first plain conductor and the second gold medal Category wire clamps thermistor substrate；The thermistor substrate and the first plain conductor, the second plain conductor are externally provided with one Layer encapsulated layer.

Preferably, the thermistor substrate can be rectangle, and the thickness of the thermistor substrate can be 200~500 μm, long Degree can be 300~700 μm, and width can be 300~700 μm.

Preferably, first glass glazings are clear glass, and its thickness can be 2000~5000 μm.

Preferably, first plain conductor and the second plain conductor are phase same material, and it can be platinum filament, spun gold, nickel wire Or Dumet wire.

Preferably, the diameter of first plain conductor and the second plain conductor can be 100~500 μm.

Preferably, the encapsulated layer can be glass glazings.

The utility model has simple in construction, easy to use, good airproof performance, insulating properties height, weather resistance strong, reliable Property high, low cost and other advantages, its reaction time is fast, and response is rapid, stability it is good and its can protection equipment well, can be extensive For fire-fighting heat detector, water heater temperature sensor industry.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.

Fig. 1 is structural representation of the present utility model；

Fig. 2 is structure sectional view of the present utility model.

Drawing reference numeral explanation：

Label	Title	Label	Title
				10	Thermistor substrate	20	First plain conductor
101	Thermistor substrate first surface	30	Second plain conductor
				102	Thermistor substrate second surface	40	Encapsulated layer

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, belongs to the scope of the utility model protection.

It is to be appreciated that institute is directional in the utility model embodiment indicates (such as up, down, left, right, before and after ...) Relative position relation, motion conditions for being only used for explaining under a certain particular pose (as shown in drawings) between each part etc., such as When really the particular pose changes, then directionality indicates also correspondingly therewith to change.

In the utility model such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", At least one this feature can be expressed or be implicitly included to the feature of " second ".In description of the present utility model, " multiple " It is meant that at least two, such as two, three etc., unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should do broad sense reason Solution, for example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can mechanically connect, also may be used Be electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be the connection of two element internals Or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, can be with Concrete meaning of the above-mentioned term in the utility model is understood as the case may be.

In addition, the technical scheme between each embodiment of the utility model can be combined with each other, but must be with ability Domain those of ordinary skill can be implemented as basis, will be understood that when the combination appearance of technical scheme is conflicting or can not realize The combination of this technical scheme is not present, also not within the protection domain of the utility model requirement.

The utility model proposes a kind of temperature sensor NTC thermistor.

Incorporated by reference to reference picture 1, Fig. 2, a kind of temperature sensor NTC thermistor, including thermistor substrate 10, first Plain conductor 20, the second plain conductor 30 and encapsulated layer 40, wherein thermistor substrate 10 can be rectangle, the thermistor substrate 10 thickness can be 200~500 μm, and length can be 300~700 μm, and width can be 300~700 μm；Encapsulated layer 40 can be transparent Glass glazings, its thickness can be 2000~5000 μm；First plain conductor 20 and the second plain conductor 30 are phase same material, its Can be platinum filament, spun gold, nickel wire or Dumet wire, the diameter of the first plain conductor 20 and the second plain conductor 30 can be 100~500 μ m。

In the utility model, thermistor substrate 10 is the oxidation by manganese, cobalt, nickel, iron, aluminium, zinc, copper, lanthanum, tin etc. Thing, through ball milling mixing, pre-burning, then is refined, and is molded, sintering, the NTC ceramic substrate that slicing process makes, and its thickness can be according to production The electrical properties of product is selected.Glass glaze encapsulated layer 40 is resistance material, and its main component is magnesia (magnesium Oxide), it is commonly called as：Magnesia, lamp powder, magnesia usta is characterized in high brightness, high antibacterial, high self-cleaning, high waterproof.First plain conductor 20 and second plain conductor 30 from there is the Dumet wire wire of good sealed knot with glass glaze encapsulated layer 40.

First plain conductor 20 is welded on thermistor substrate first surface 101, and the second plain conductor 20 is welded on heat On quick resistance substrate second surface 102, wherein the weldering of the first plain conductor 20, the second plain conductor 30 and thermistor substrate 10 The mode of connecing has ultra-sonic welded, gold ball bonding, silver paste slugging etc.；First plain conductor 20 and the second plain conductor 30 clamp temperature-sensitive Resistance substrate 10；The plain conductor 20 of thermistor substrate 10 and first, the second plain conductor 30 are externally provided with one layer of glass glaze encapsulation Layer 40, the wherein package length of glass glaze encapsulated layer 40 need to be determined according to temperature sensor needs.

The utility model substitutes epoxy resin with glass glaze, and traditional copper wire is substituted with Dumet silk thread, is carried out at high temperature Sealed knot.Due to Dumet wire and glass-glazed sealing, the thermistor heat detector made using the utility model is through boiling water boiling After 1000 hours, electrical property is unchanged.Have great practical value, can be widely used for fire-fighting heat detector, water heater temperature is passed Sensor industry.

Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, It is every under inventive concept of the present utility model, the equivalent structure made using the utility model specification and accompanying drawing content is become Change, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.

Claims

1. a kind of temperature sensor NTC thermistor, including thermistor substrate, the first plain conductor, the second plain conductor And encapsulated layer, it is characterised in that first plain conductor is welded on the first surface of thermistor substrate, and the second metal is led Wire bonding is on the second surface of thermistor substrate, wherein the first plain conductor and the second plain conductor clamp thermistor Substrate；The thermistor substrate and the first plain conductor, the second plain conductor are externally provided with one layer of encapsulated layer；The encapsulated layer is Transparent glass glazings, its thickness can be 2000~5000 μm；The package length of the encapsulated layer according to temperature sensor needs come It is determined that；First plain conductor and the second plain conductor are phase same material, and it is platinum filament, spun gold, nickel wire or Dumet wire.

2. a kind of temperature sensor NTC thermistor according to claim 1, it is characterised in that the thermistor Substrate can be rectangle, and the thickness of the thermistor substrate can be 200~500 μm, and length can be 300~700 μm, and width can be 300~700 μm.

3. a kind of temperature sensor NTC thermistor according to claim 1, it is characterised in that first metal The diameter of wire and the second plain conductor can be 100~500 μm.