CN2476005Y

CN2476005Y - Improved guide wave device for infrared temp. measuring device

Info

Publication number: CN2476005Y
Application number: CN 01218664
Authority: CN
Inventors: 游朱义
Original assignee: Mesure Technology Co Ltd
Current assignee: Mesure Technology Co Ltd
Priority date: 2001-04-13
Filing date: 2001-04-13
Publication date: 2002-02-06
Anticipated expiration: 2011-04-13

Abstract

An improvement wave guide device of infrared ear thermometer, a wave guide body is arranged in the shell of the temperature measurement head of the ear thermometer, and an electrothermal reactor is connected at the internal end of the wave guide body which is integrally formed by material with fine thermal conductivity, and the wave guide body comprises a diameter shrinkage part arranged at the shell, an increased isothermal base arranged at the internal section, a joint part arranged at the center of the internal end and an axial wave guide hole positioned in the center, the increased isothermal base and the diameter shrinkage part are formed integrally and with the same material; besides the increased isothermal base is with fine thermal conductivity; the utility model reduces the temperature difference, enhances the accuracy of temperature measurement, has no problem of thermal conducting due to two materials contacting, is capable of ensuring nearly isothermal and more accurate effectiveness of temperature measurement.

Description

The improvement guide wave device of infrared ear temp gun

The utility model relates to a kind of improvement guide wave device of infrared ear temp gun.

The temperature measuring head of existing infrared ear temp gun mainly is to be provided with a waveguide pipe (wave guide tube) in a conical shell inside, and be connected with an infrared radiation detection part (infraredradiation detector) in waveguide pipe the inner, for heat of aggregation and perception radiation temperature, but be separated with a segment distance mutually because of between waveguide pipe outer end and inner infrared radiation detection part, can cause the temperature difference, make the accuracy of thermometric reduce.

At the problems referred to above, feasible improvement technology is to make isothermal piece (isothermic block) with the good material of thermal conductivity, be coated among the waveguide pipe, the inner segment periphery, make that the temperature difference between waveguide pipe outer end and the infrared radiation detection part reduces, reach and be tending towards waiting temperature state.Yet above-mentioned improvement technology still exists the problem that waveguide pipe and two kinds of unlike materials of isothermal piece contact with each other heat conduction, and not only the accuracy of thermometric is slightly undesirable, and needs to increase the operation of assembling isothermal piece.

At the shortcoming of prior art, fundamental purpose of the present utility model is to provide a kind of improvement guide wave device of infrared ear temp gun, and its no waveguide pipe (wave guide tube) does not have two kinds of material thermal contact conductance problems, and can reach convergence isothermal, more accurate thermometric.

Another fundamental purpose of the present utility model is to provide a kind of improvement guide wave device of infrared ear temp gun, and a kind of accurate thermometric and guide wave device that is easy to assemble of having concurrently manufacturing cost is minimized, and competitiveness of product can significantly improve.

For achieving the above object, the utility model is achieved through the following technical solutions: a kind of improvement guide wave device of infrared ear temp gun, it is characterized in that: it is the wave director that is made into integration with the good material of thermal conductivity in the enclosure Gao Youyi of ear thermometer temperature measuring head, be connected with electric heating heap in wave director the inner, this wave director includes the footpath of the being located at shell portion of contracting, one is located at the isothermal seat of inner segment, one junction surface and of being located at inner central authorities is positioned at the axial guided wave pore at center, portion and the shell space at interval of contracting, above-mentioned footpath, above-mentioned isothermal seat is made into integration with material for the footpath portion of contracting.

Guided wave pore is a through hole, is communicated in directly contract portion, isothermal seat and junction surface.

The junction surface is the recess in the inner central fovea of a self-guiding body, and it is shaped as the profile that is fit to the electric heating heap.

By the improvement guide wave device of the utility model infrared ear temp gun, overcome the shortcoming of prior art, reached the purpose of above-mentioned creation, the utility model greatly improves the accuracy of thermometric.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Fig. 1 is the stereographic map that the utility model embodiment is incorporated into ear thermometer;

Fig. 2 is the stereographic map that the utility model and shell are assembled into temperature measuring head;

Fig. 3 is an exploded perspective view of the present utility model;

Fig. 4 is the utility model inner structure cut-open view;

Fig. 5 is that the utility model isothermal seat structure is analysed and observe enforcement illustration one;

Fig. 6 is that the utility model isothermal seat structure is analysed and observe enforcement illustration two;

Fig. 7 is that the utility model isothermal seat structure is analysed and observe enforcement illustration three.

See also Fig. 1 to shown in Figure 3, the improvement guide wave device of the utility model infrared ear temp gun is performed in the temperature measuring head of ear thermometer, this temperature measuring head shell is provided with a wave director 2 with inside, and it is for to be made into integration with the good material of thermal conductivity, and it is good that this material can be used copper, aluminium or its alloy.Wave director 2 includes contract junction surface 23 and that isothermal seat 22, that portion 21, is located at inner segment is located at inner central authorities, the footpath of being located at outer section and is positioned at the axial guided wave pore 24 at center.

See also shown in Figure 4, the space at interval of contracting between portion 21 and the shell 1, above-mentioned footpath, only with air as heat insulation, to improve the thermometric accuracy, and isothermal seat 22 is for being made into integration with material with the portion 21 of directly contracting, but good heat conductive can not produce the thermal contact conductance problem because of the difference of two kinds of materials, uses the advantage with material to be to make the temperature difference to reduce and raising thermometric accuracy relatively.

The position is piled (thermopile) 3 at the junction surface 23 at wave director 2 inner places for electric heating is set, this electric heating heap 3 is that a kind of sensitivity heat radiation measures device, it has perception temperature and heat build-up effect, and the heat energy that this infrared radiation goes out can give heat build-up and perception by the guided wave pore 24 that is communicated in directly contract portion 21, isothermal seat 22 and junction surface 23.

After junction surface 22 is provided with electric heating heap 3, then can be in the junction surface 23 outsides with positioning piece 4 cappings, and with keeper 4 with the screw locking, and this keeper 4 can be PCB or be stator.

See also Fig. 5 to shown in Figure 7; wherein isothermal seat 22 further can be a kind of multistage body (consulting shown in Fig. 5,6); or among multistage body, can be again and have curvature shape (consulting shown in Figure 7); or can be the taper form; and between above isothermal seat 22 and shell 1, having clearance space, it has the effect of heat of cooling air, in order to reach the accuracy of thermometric; so the variation of all this kind shapes is protected by the utility model patent also should.

In sum, the utility model is to make wave director with the metal with material, can reach the convergence isothermal really, can be good heat conductive, the temperature difference is reduced and improve the thermometric accuracy, it fully possesses novelty, progressive and practical value, proposes the application of patent in accordance with the law.

Claims

1, a kind of improvement guide wave device of infrared ear temp gun, it is characterized in that: it is the wave director that is made into integration with the good material of thermal conductivity in the enclosure Gao Youyi of ear thermometer temperature measuring head, be connected with electric heating heap in wave director the inner, this wave director includes contract junction surface and that isothermal seat, that portion, is located at inner segment is located at inner central authorities, the footpath of being located at shell and is positioned at the axial guided wave pore at center, portion and the shell space at interval of contracting, above-mentioned footpath, above-mentioned isothermal seat is made into integration with material for the footpath portion of contracting.

2, the improvement guide wave device of infrared ear temp gun as claimed in claim 1, it is characterized in that: guided wave pore is a through hole, is communicated in directly contract portion, isothermal seat and junction surface.

3, the improvement guide wave device of infrared ear temp gun as claimed in claim 1 is characterized in that: the junction surface is the recess in the inner central fovea of a self-guiding body, and it is shaped as the profile that is fit to the electric heating heap.