CN2100615U

CN2100615U - Thermometer with an alarm

Info

Publication number: CN2100615U
Application number: CN 91221428
Authority: CN
Inventors: 法永
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-08-01
Filing date: 1991-08-01
Publication date: 1992-04-01

Abstract

The utility model provides a thermometer apparatus capable of alarming automatically when reaching the dangerous temperature, characterized in that pulling the pointer to close the circuit and sent out alarm signals through one side of 'U'-shaped heated bimetallic strip. The thermometer has a simple structure, temperature is indicated by a pointer, capable of alarming at any measured temperature, especially fit for temperature measuring and prewarning of electrical motors, power transformers, boilers and so on, helping workers avoid the accidents caused by too high or too low temperature effectively.

Description

Thermometer with an alarm

The utility model relates to the thermometer device that can report to the police automatically when a kind of temperature is raised to or drops to a certain numerical value.

On equipment such as many motors, transformer, boiler, all be inserted with thermometer, when working, they need special messenger's quantitative check, but actually, the higher position is no problem excessively as long as their temperature is unlikely, also needn't monitor constantly, therefore these equipment are when temperature raises rapidly, and the workman but can not examine often and know, thereby causes the generation of accident.

The purpose of this utility model is a kind of thermometer device that can report to the police automatically of design, and it is the energy measurement temperature not only.And can when reaching dangerous temperature, report to the police automatically, thereby inform that the workman takes measures, ensure the safety of equipment such as motor, prevent the generation of accident.

The utility model is achieved in that by fixing " U " shape thrermostatic bimetal-plate of a side and removes to draw the registration pointer that when reaching alarm temperature, the registration pointer contacts with the warning pointer, and circuit is connected, and sends alerting signal.Alarm temperature will be determined in advance by transferring the warning pointer.

Because " U " shape bimetallic strip two ends distances is apparent in view with temperatureization, though make less, also can produce several mm distance and enough pulling force, thereby has the pointer of amplification with its traction, not only simple in structure, and comparatively sensitive and accurate, realize the requirement of reporting to the police easily.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing.

Fig. 1 is a front cross-sectional view of the present utility model.

Fig. 2 is back side dial plate figure.

Fig. 3 is the circuit diagram of this thermometer

This device comprises that 2. a bottom is fixed on " U " shape bimetallic strip that 1. shell go up, 2. 4. the upper end is closely connecting the traction buttress shaft, 4. 7. the upper end is connecting the registration pointer, 7. the bottom is V-shaped, being fixed on axle 5. goes up, top is small circular sheet (14), and 5. axle is an eradication edge axle, and 10. its other end is with a rotatable knob.10. link to each other with the spring (11) that an end connects pointer (12), connection contact (13) is arranged on (12), (13) are permanent-magnet steel.6. dial plate insulate, semicircular in shape, and the edge has one to scratch empty semi arch, the scale unanimity on dial plate two sides.

3. for holding the box of compact battery, 9. be the lead that is connected with the external world among the figure, device that can be luminous when 8. being a galvanization, power supply is by the small battery powered in being placed on 3..7. circuit connects pointer from anode, and (12) connect external circuit and reach 8., 8. connect battery cathode.In real work, mainly connect external circuit and report to the police by pointer, at this moment battery will take out in 3..

Because hard buttress shaft is 4. long, it is heated often inhomogeneous, easily influences the accurate of reading, during manufacturing, make its thermal expansivity consistent with shell.

In use, if connect external circuit, need series connection power supply and alarm, (with interior circuit time packed battery get final product) is first to transfer to early warning pointer (12) a little less than the temperature that may cause danger.Along with variation of temperature, what 7. the registration pointer did not stop moves, and when it and (12) were leaned on very closely, because the weak magnetic action of (13) holds (14), circuit was connected, and reports to the police.

Because this alarm thermometer is made receptor with thrermostatic bimetal-plate, thereby bigger measurement range arranged, it can be reported to the police under arbitrary temperature of being surveyed again, therefore, not only can replace the thermometer above motor, transformer, the boiler etc., can also report to the police automatically, both reduce workman's labor capacity, can avoid again being to use workmans' such as motor, burning boiler competent assistant because of the overheated or cold excessively accident that causes.

Claims

1, a kind of alarm thermometer, by shell 1., " U " shape thrermostatic bimetal-plate 2., connect hard buttress shaft 4., the registration pointer 7., early warning pointer (10), the insulation rotating shaft 5., the temperature scale dish 6., the knob that can pass through spring (11) adjusting early warning pointer (12) is 10., the bottom that it is characterized in that " U " shape thrermostatic bimetal-plate (2) is fixed on the shell, 4. top closely link to each other with hard buttress shaft, and top 4. is close to registration pointer bottom 7., and the middle and lower part of registration pointer is fixed on the insulation axle and 5. goes up, 7. bottom is V-shaped, to 5. distance of axle, the lower end of early warning pointer (12) is enclosed within axle and 5. goes up the distance that 4. buttress shaft arrives axle less than pointer tip 7., spring (11) the one ends early warning pointer of ining succession, the other end links to each other with knob, 6. can insulate.

2, alarm thermometer as claimed in claim 1, it is characterized in that 6. dial plate has identical scale in both sides, 6. edge has scratches empty thin arc, the projection (13) of pointer (12) is stretched out a little by arc, (12) can 10. be rotated by knob by spring (11), when 7. the registration pointer went to the early warning pointer position, (13) contacted with (14), and (13) or (14) are weak permanent magnetism steel.

3, alarm thermometer as claimed in claim 1 is characterized in that 8. being a small-sized light-emitting device, 3. for adorning the box of compact battery, 9. for connecting two leads of two pointers respectively, by lead, negative pole 3. links to each other with pointer (12), anodal with 7. link to each other, contact 8. therebetween.