CN215677338U

CN215677338U - Quick-response thermistor

Info

Publication number: CN215677338U
Application number: CN202121322658.6U
Authority: CN
Inventors: 阴卫华; 周好; 孙振
Original assignee: Anhui Jinggeer Electronics Co ltd
Current assignee: Anhui Jinggeer Electronics Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-01-28
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a quick-response thermistor which comprises a sealed shell, wherein a resistor matrix is arranged in the sealed shell, a glass sealing body is filled between the inside of the sealed shell and the thermistor matrix, a group of channels are arranged on the glass sealing body, one end opening of each channel faces to the resistor matrix, the other end opening of each channel penetrates through the side wall of the sealed shell to be communicated with the outside, a heat-conducting fin is plugged at the opening of each channel communicated with the outside of the sealed shell, a lead is also connected to the resistor matrix and penetrates through the side wall of the sealed shell. The utility model has the advantages that: this device is at the inside circumference equipartition a set of passageway of sealed casing, and outside and resistance base member of passageway intercommunication, at the outside opening part shutoff heat-conducting plate of passageway intercommunication, can conduct heat rapidly through the heat-conducting plate, then give the resistance base member through the passageway transmission, make the resistance base member can be according to the heat fast reaction.

Description

Quick-response thermistor

Technical Field

The utility model relates to the technical field of thermistors, in particular to a thermistor with quick response.

Background

Along with the rapid progress and development of China's society, the current temperature measurement requirements for various industries are relatively high, so that a large number of temperature sensors are needed to measure the temperature, especially, the corresponding requirements on acquisition time are gradually increased at present, but the basic resin type thermistor adopted in the current market is poor in durability and relatively slow in reaction speed, especially, when the ambient temperature of air is tested, because the specific heat of air is small, the heat conduction thermistor needs a long time, a good temperature measurement effect cannot be realized in the field needing to rapidly respond to the change of the ambient temperature of the air, the time delay is too long, the response speed is slow, the accuracy of temperature measurement can be influenced, and the frequent requirements at the present stage are difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a thermistor with quick response.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a fast-response thermistor, characterized by: including sealed housing, set up the resistance base member in sealed housing, sealed housing inside with fill the glass seal between the thermistor base member, be equipped with a set of passageway on the glass seal, the one end opening of every passageway all faces to the resistance base member, the other end opening of every passageway all link up sealed housing's lateral wall intercommunication is outside, at every passageway intercommunication the outside opening part shutoff heat-conducting plate of sealed housing still connects the lead wire on the resistance base member, and the lead wire passes sealed housing's lateral wall.

Preferably, the sealing shell is a circular box body, and the sealing shell is made of copper.

Preferably, each channel comprises two baffles, each baffle is connected inside the sealed shell, and each baffle is made of an insulating material.

Preferably, each channel is a V-shaped channel, a smaller end of the V-shaped channel is opened toward the resistor substrate, and the opening of the larger end of the V-shaped channel is plugged with the heat conducting plate.

Preferably, the heat conducting plate is a thin film ceramic substrate.

Preferably, a protective tube is sleeved on each lead.

The utility model has the advantages that: according to the rapid-response thermistor provided by the utility model, the group of channels are uniformly distributed on the circumference in the sealed shell, the channels are communicated with the outside and the resistor matrix, the opening of the channel communicated with the outside is plugged with the heat-conducting plate, heat can be rapidly conducted through the heat-conducting plate, and then the heat is transferred to the resistor matrix through the channels, so that the resistor matrix can rapidly react according to the heat.

Drawings

Fig. 1 is a schematic structural diagram of a fast-response thermistor provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, the fast-response thermistor provided by the present invention includes a sealed case 1, and a resistor substrate 2 is disposed in the sealed case 1, in this embodiment, the resistor substrate 2 is a single-ended glass-sealed thermistor, and temperature measurement is accurate.

Sealed casing 1 is circular box body, and the heated area is big, and sealed casing 1's material is copper, and the heat conductivity of copper is good, makes the heat can conduct sealed casing 1's inside rapidly.

A glass seal 3 is filled between the inside of the sealed case 1 and the resistor substrate 2, and the resistor substrate 2 is fixed inside the sealed case 1 by the glass seal 3.

Be equipped with a set of passageway 4 on glass seal body 3, the quantity of a set of passageway 4 is four in this embodiment, and four 4 circumference equipartitions of passageway, every passageway 4 all includes two baffles 4.1, and every baffle 4.1 is all in sealed casing 1's inside, and every baffle 4.1 is insulating material, and baffle 4.1 chooses for use the duroplastic material in this embodiment.

Every passageway 4's one end opening all moves towards resistance base member 2, every passageway 4's other end opening all link up seal housing 1's lateral wall intercommunication outside, for the outside opening of increase passageway 4 intercommunication, will every passageway 4 designs into the V-arrangement passageway, and the less one end opening orientation of V-arrangement passageway resistance base member 2, at the shutoff of great one end opening part heat-conducting plate 5, heat-conducting plate 5 is the film ceramic base plate in this embodiment, when resistance base member 2 sensing temperature, only need pass through the film ceramic base plate of one deck ripples, and its reaction rate promotes by a wide margin.

In addition, the area of the heat conducting plate 5 is further increased due to the design of the V-shaped channel, external heat can be quickly conducted into the channel 4 and then conducted to the resistance matrix 2 along the channel 4, and the resistance matrix 2 can quickly react.

Still connect lead wire 6 on resistance base member 2, lead wire 6 is used for connecting device, and lead wire 6 passes the lateral wall of sealed casing 1, all cup joints protection tube 7 on every lead wire 6, and in this embodiment, protection tube 7 is the teflon pyrocondensation pipe, can play fine guard action to lead wire 6.

Claims

1. A fast-response thermistor, characterized by: including seal housing (1), set up resistance base member (2) in seal housing (1), seal housing (1) inside with fill glass seal (3) between thermistor base member (2), be equipped with a set of passageway (4) on glass seal (3), the one end opening of every passageway (4) all moves towards resistance base member (2), the other end opening of every passageway (4) all link up the lateral wall intercommunication outside of seal housing (1), at every passageway (4) intercommunication seal housing (1) outside opening part shutoff heat-conducting plate (5) still connect lead wire (6) on resistance base member (2), lead wire (6) pass the lateral wall of seal housing (1).

2. A fast-response thermistor according to claim 1, characterized in that: the sealing shell (1) is a round box body, and the sealing shell (1) is made of copper.

3. A fast-response thermistor according to claim 1, characterized in that: every passageway (4) all includes two baffles (4.1), and every baffle (4.1) all is connected the inside of sealed casing (1), and every baffle (4.1) are insulating material.

4. A fast-response thermistor according to claim 1, characterized in that: each channel (4) is a V-shaped channel, the smaller end of the V-shaped channel is opened towards the resistor base body (2), and the larger end of the V-shaped channel is closed by the heat conducting plate (5).

5. A fast-response thermistor according to claim 1, characterized in that: the heat conducting plate (5) is a thin film ceramic substrate.

6. A fast-response thermistor according to claim 1, characterized in that: and a protective tube (7) is sleeved on each lead (6).