CN202220652U - Alarm circuit of poor heat dissipation of water tank of automobile engine - Google Patents
Alarm circuit of poor heat dissipation of water tank of automobile engine Download PDFInfo
- Publication number
- CN202220652U CN202220652U CN2011203155190U CN201120315519U CN202220652U CN 202220652 U CN202220652 U CN 202220652U CN 2011203155190 U CN2011203155190 U CN 2011203155190U CN 201120315519 U CN201120315519 U CN 201120315519U CN 202220652 U CN202220652 U CN 202220652U
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- temperature
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- thermistor
- water tank
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Abstract
The utility model relates to an alarm circuit of poor heat dissipation of a water tank of an automobile engine. The alarm circuit of poor heat dissipation of the water tank of the automobile engine includes a power source sub-circuit, a temperature-measuring sub-circuit and an alarm sub-circuit connected successively. The power source sub-circuit provides working voltage. The temperature-measuring sub-circuit measures temperatures of an inlet and an outlet of the water tank. When the temperature of the inlet or the outlet of the water tank is too high, the alarm sub-circuit alarms. In the utility model, when the temperature of the inlet or the outlet of the water tank of the automobile engine is too high, an alarm light is on, thereby prompting a driver or a maintenance man to check a cooling system of the engine timely. In this way, that the engine becomes too hot and accordingly the working performance of the engine is influenced is avoided.
Description
Technical field
The utility model relates to a kind of warning circuit, especially a kind of radiator of car engine bad warning circuit that dispels the heat.
Background technique
The normal working temperature of motor car engine is about 90 ℃-100 ℃, too high or too lowly all can the service behaviour of motor be made a big impact, and it is to regulate through the cooling system of motor.Engine-cooling system mainly comprises radiator (also being water tank), fan, water pump etc.; Through water pump cooling water is circulated in system; The heat that cooling water is absorbed on engine body dissipates through water tank, can strengthen the thermolysis of water tank when fan rotates.If engine rotation, its just work of water pump; The work of fan is only relevant with engine operating temperature, and fan rotated when general engine operating temperature was higher than 90 ℃, and fan does not rotate when being lower than 90 ℃.Engine-cooling system just often, when the operating temperature of motor is a water tank inlet temperature when being 90 ℃-100 ℃, its outlet temperature is about 50 ℃-60 ℃ after the water tank heat radiation.As water tank owing to incrustation scale, radiating fin not just or have dust and other impurities to cause reasons such as sluggish in air circulation, that fan does not change, will cause the water tank outlet temperature high, and then make the operating temperature of motor also high and influence its service behaviour.It is necessary that the water tank bad warning circuit that dispels the heat is installed on motor car engine.
Summary of the invention
The utility model technical problem to be solved is the deficiency to above-mentioned background technology, and a kind of radiator of car engine bad warning circuit that dispels the heat is provided.
The utility model adopts following technological scheme for realizing the foregoing invention purpose:
A kind of radiator of car engine bad warning circuit that dispels the heat comprises power branch, thermometric branch road, warning branch road; Wherein said power branch comprises ignition switch and storage battery, and said thermometric branch road comprises first, second thermistor (temperature) sensor; Said warning branch road comprises first, second resistance, light emitting diode, triode; Wherein:
The positive pole of said storage battery is connected the minus earth of storage battery with an end of ignition switch;
The other end of said ignition switch is connected with the input end of first thermistor (temperature) sensor, an end of first resistance respectively; The output terminal of first thermistor (temperature) sensor is connected with the input end of second heat sensitive sensor, the base stage of triode respectively, the output head grounding of second heat sensitive sensor;
The other end of said first resistance is connected with the anode of light emitting diode, and the negative electrode of light emitting diode is connected with the collector electrode of triode, and the emitter of triode is connected with an end of second resistance, the other end ground connection of second resistance.
Said radiator of car engine dispels the heat in the bad warning circuit, and first thermistor (temperature) sensor is the thermistor (temperature) sensor of negative temperature coefficient, and second thermistor (temperature) sensor is the thermistor (temperature) sensor of positive temperature coefficient.
The utility model adopts technique scheme; Has following beneficial effect: when too high or outlet temperature is too high in the radiator of car engine inlet temperature; Warning light is bright; In time prompting driver or maintenance man check engine-cooling system, in order to avoid engine overheat and influence the engine operation performance.
Description of drawings
Fig. 1 is the dispel the heat circuit diagram of bad warning circuit of radiator of car engine.Label declaration among the figure: 1, storage battery; 2, the thermistor (temperature) sensor of negative temperature coefficient; 3, the thermistor (temperature) sensor of positive temperature coefficient; 4, ignition switch; 5, LED warning light; 6, first resistance; 7, triode; 8, second resistance.
Embodiment
Be elaborated below in conjunction with the technological scheme of accompanying drawing to the utility model:
As shown in Figure 1: a kind of radiator of car engine bad warning circuit that dispels the heat comprises power branch, thermometric branch road, warning branch road; Wherein power branch, thermometric branch road, warning branch road connect successively;
Said power branch comprises ignition switch 4 and storage battery 1; The positive pole of storage battery 1 is connected with ignition switch 4, the minus earth of storage battery 1;
Said thermometric branch road comprises the thermistor (temperature) sensor 2 of negative temperature coefficient, the thermistor (temperature) sensor 3 of positive temperature coefficient; The output terminal of the sensing resistance transducer 2 of negative temperature coefficient is connected with the input end of the heat sensitive sensor 3 of positive temperature coefficient, the output head grounding of the heat sensitive sensor 3 of positive temperature coefficient;
Said warning branch road comprises first resistance 6, second resistance 8, LED warning light 5, triode 7; The anode of LED warning light 5 is connected with first resistance 6; The negative electrode of LED warning light 5 is connected with the collector electrode of triode 7; The emitter of triode 7 is connected with the input end of second resistance 8; The base stage of triode 7 links to each other the output head grounding of second resistance 8 with the tie point of the heat sensitive sensor 3 of the heat sensitive sensor of negative temperature coefficient 2, positive temperature coefficient.
Water tank import cooling water temperature raises, and the thermistor resistance of the thermistor (temperature) sensor 3 of positive temperature coefficient increases, and under the constant situation of the thermistor resistance of the thermistor (temperature) sensor 2 of negative temperature coefficient, the A point voltage rises.(2) water tank outlet cooling water temperature raises, and the thermistor resistance of the thermistor (temperature) sensor 2 of negative temperature coefficient reduces, and under the constant situation of the thermistor resistance of the thermistor (temperature) sensor 3 of positive temperature coefficient, the A point voltage also rises.(3) as long as the thermistor (temperature) sensor of negative temperature coefficient 2 is suitable with the special parameter selection of the thermistor (temperature) sensor 3 of positive temperature coefficient; When water tank import cooling water temperature (as being higher than 100 ℃) or outlet cooling water temperature (as being higher than 60 ℃) when too high; The A point voltage will be elevated to the conducting voltage greater than triode 7, triode 7 saturation conductions, and LED warning light 5 is lighted; Show that engine-cooling system has fault, need overhaul.
Claims (2)
1. a radiator of car engine bad warning circuit that dispels the heat is characterized in that: comprise power branch, thermometric branch road, warning branch road; Wherein said power branch comprises ignition switch and storage battery, and said thermometric branch road comprises first, second thermistor (temperature) sensor; Said warning branch road comprises first, second resistance, light emitting diode, triode; Wherein:
The positive pole of said storage battery is connected the minus earth of storage battery with an end of ignition switch;
The other end of said ignition switch is connected with the input end of first thermistor (temperature) sensor, an end of first resistance respectively; The output terminal of first thermistor (temperature) sensor is connected with the input end of second heat sensitive sensor, the base stage of triode respectively, the output head grounding of second heat sensitive sensor;
The other end of said first resistance is connected with the anode of light emitting diode, and the negative electrode of light emitting diode is connected with the collector electrode of triode, and the emitter of triode is connected with an end of second resistance, the other end ground connection of second resistance.
2. the radiator of car engine according to claim 1 bad warning circuit that dispels the heat; It is characterized in that said first thermistor (temperature) sensor is the thermistor (temperature) sensor of negative temperature coefficient, second thermistor (temperature) sensor is the thermistor (temperature) sensor of positive temperature coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203155190U CN202220652U (en) | 2011-08-26 | 2011-08-26 | Alarm circuit of poor heat dissipation of water tank of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203155190U CN202220652U (en) | 2011-08-26 | 2011-08-26 | Alarm circuit of poor heat dissipation of water tank of automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220652U true CN202220652U (en) | 2012-05-16 |
Family
ID=46042679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203155190U Expired - Fee Related CN202220652U (en) | 2011-08-26 | 2011-08-26 | Alarm circuit of poor heat dissipation of water tank of automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220652U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269041A (en) * | 2011-08-26 | 2011-12-07 | 龚文资 | Alarm circuit for poor heat radiation of automobile engine water tank |
| CN104121207A (en) * | 2014-07-30 | 2014-10-29 | 苏州淮通电气有限公司 | Idling alarming submersible pump |
| CN104141613A (en) * | 2014-07-30 | 2014-11-12 | 苏州淮通电气有限公司 | Submerged pump with high temperature warning function |
| CN110146189A (en) * | 2019-05-22 | 2019-08-20 | 昆明理工大学津桥学院 | Baby, which generates heat, detects warning circuit |
-
2011
- 2011-08-26 CN CN2011203155190U patent/CN202220652U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269041A (en) * | 2011-08-26 | 2011-12-07 | 龚文资 | Alarm circuit for poor heat radiation of automobile engine water tank |
| CN104121207A (en) * | 2014-07-30 | 2014-10-29 | 苏州淮通电气有限公司 | Idling alarming submersible pump |
| CN104141613A (en) * | 2014-07-30 | 2014-11-12 | 苏州淮通电气有限公司 | Submerged pump with high temperature warning function |
| CN110146189A (en) * | 2019-05-22 | 2019-08-20 | 昆明理工大学津桥学院 | Baby, which generates heat, detects warning circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20120826 |