CN218103539U - Heater for automobile drier - Google Patents
Heater for automobile drier Download PDFInfo
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- CN218103539U CN218103539U CN202222458177.9U CN202222458177U CN218103539U CN 218103539 U CN218103539 U CN 218103539U CN 202222458177 U CN202222458177 U CN 202222458177U CN 218103539 U CN218103539 U CN 218103539U
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Abstract
The utility model relates to an automobile parts technical field provides a heater for auto dryer, include: the series connection thermosensitive element and the heating element are respectively connected to the positive terminal and the negative terminal; the temperature controller is connected between the positive electrode end and the thermosensitive element; and the electric signal output end is led out from the serial node of the thermal sensitive element and the heating element and can be connected to a display instrument. The utility model discloses a heater for automobile dryer can be through the heat-sensitive element that adds in the heater circuit and can be connected to the electric signal output terminal of display instrument, for the user to read the electric signal data of heater circuit, in order to know the circuit state of heater accurately; especially under the short-circuit working condition that the heater circuit is not controlled by the temperature controller, due to the characteristic that the resistance value of the thermosensitive element changes along with the temperature change, the electric signal data also changes along with the temperature change, so that a user can find the abnormal state of repeated change of the electric signal data in time, and the short-circuit protection is realized.
Description
Technical Field
The utility model relates to an automobile parts technical field, specifically speaking relates to a heater for auto dryer.
Background
Commercial vehicles such as large buses and trucks are equipped with a dryer for drying high-pressure air for braking of the vehicles. The dryer is internally provided with a heating rod, and the moisture in the high-pressure air is dried by heating the heating rod.
Fig. 1 shows a circuit structure of a conventional heater for an automobile dryer, and referring to fig. 1, a heating resistor 11 is provided in a heating rod 10, and a positive terminal Supply + for connecting a positive electrode of a power Supply and a negative terminal GND for connecting a negative electrode of the power Supply are respectively led out from both ends of the heating resistor 11 through wires 12; the positive terminal Supply + is also connected to the dashboard of the car.
A temperature controller 13 is arranged between the heating resistor 11 and the positive electrode terminal Supply +; the temperature controller 13 can be automatically closed when the temperature is lower than a certain threshold value, so that the circuit is conducted, the heating rod 10 works, and the instrument panel displays an 'ON' state; when the temperature is higher than a certain threshold value, the temperature controller 13 is automatically disconnected, the circuit is disconnected at the moment, and the instrument panel displays an OFF state.
For the user, the heater for the automobile dryer can only acquire the circuit state through the ON/OFF state displayed by the instrument panel; in practical application, when the instrument panel displays an ON state, the circuit can be in a short-circuit state except for normal operation, and at the moment, a user cannot know that the heater is continuously overheated, so that danger is brought.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a heater for an automobile dryer, which can read the electrical signal data of a heater circuit through a thermal sensitive element additionally arranged in the heater circuit and an electrical signal output end capable of being connected to a display instrument, so as to accurately know the circuit state of the heater; especially under the short-circuit working condition that the heater circuit is not controlled by the temperature controller, due to the characteristic that the resistance value of the thermosensitive element changes along with the temperature change, the electric signal data also changes along with the temperature change, so that a user can find the abnormal state of repeated change of the electric signal data in time, and the short-circuit protection is realized.
According to an aspect of the utility model, a provide a heater for automobile dryer, include: the heat-sensitive element and the heating element are connected in series, and the heat-sensitive element and the heating element are respectively connected with a positive terminal and a negative terminal; the temperature controller is connected between the positive electrode end and the thermosensitive element; and the electric signal output end is led out from the serial connection node of the thermosensitive element and the heating element and can be connected to a display instrument.
In some embodiments, the heater for an automobile dryer further comprises: and the analog-digital converter is connected between the electric signal output end and the display instrument.
In some embodiments, the electrical signal output is a voltage output for outputting a voltage signal; the analog-to-digital converter is a voltage-to-temperature converter for converting the voltage signal of the series node into a temperature value.
In some embodiments, the heater for an automobile dryer further comprises: and the alarm is connected to the electric signal output end.
In some embodiments, the display instrument is an instrument panel of a vehicle to which the heater for the automobile dryer is fitted; alternatively, the display instrument is a separate instrument panel independent of the instrument panel of the vehicle.
In some embodiments, the thermistor is a thermistor and the heat generating element is a heat generating resistor.
In some embodiments, the heat sensitive element and the heat generating element are built into a heater bar.
In some embodiments, the heater for an automotive dryer further comprises a plug; the heating rod and the temperature controller are arranged at one end of the plug; the positive terminal, the negative terminal and the electric signal output terminal respectively penetrate through the plug and are correspondingly connected with three pins arranged at the other end of the plug.
Compared with the prior art, the utility model beneficial effect include at least:
the utility model discloses a heater for automobile dryer, through the heat-sensitive element that adds in the heater circuit with can be connected to the electric signal output end of display instrument, supply the user to read the electric signal data of heater circuit, the user can also convert electric signal data into other numerical values that are convenient for read to accurately learn the circuit state of heater for automobile dryer;
especially under the short-circuit working condition that the heater circuit is not controlled by the temperature controller, due to the characteristic that the resistance value of the thermosensitive element changes along with the temperature change, the electric signal data also changes along with the temperature change, so that the data displayed by the display instrument is repeatedly displayed, a user can timely find the abnormal state of the repeated change of the electric signal data, and the short-circuit protection is realized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic diagram showing a circuit configuration of a heater for a conventional automobile dryer;
fig. 2 is a schematic diagram showing a circuit configuration of a heater for an automobile dryer according to an embodiment of the present invention;
fig. 3 is a schematic view showing an appearance structure of a heater for an automobile dryer according to an embodiment of the present invention;
FIG. 4 is a schematic diagram showing a resistance value of a thermistor according to an embodiment of the present invention;
fig. 5 shows a schematic diagram of the temperature display and alarm of the heater for the automobile dryer according to the embodiment of the present invention.
The main reference numbers:
200. heating rod
210. Thermosensitive element
220. Heating element
240. Temperature controller
200c electric signal output terminal
310 A/D converter
330. Alarm device
340. Display instrument
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
The use of "first," "second," and similar terms in the detailed description is not intended to imply any order, quantity, or importance, but rather is used to distinguish one element from another. It should be noted that features of the embodiments and different embodiments of the present invention may be combined with each other without conflict.
Fig. 2 shows a circuit structure of a heater for an automobile dryer according to an embodiment of the present invention, and fig. 3 shows an external appearance structure of the heater for the automobile dryer; with reference to fig. 2 and 3, an embodiment of the present invention provides a heater for an automobile dryer, including:
a thermosensitive element 210 and a heating element 220 connected in series, the thermosensitive element 210 and the heating element 220 being connected to the positive terminal 200a and the negative terminal 200b, respectively;
a temperature controller 240 connected between the positive electrode terminal 200a and the thermistor 210; and
an electrical signal output 200c leads from the series junction of the thermistor 210 and the heater element 220 and can be connected to a display instrument (not specifically shown in fig. 2 and 3).
The electronic components of the heater for an automobile dryer may be connected to each other by wires 230.
The heater for the automobile dryer is characterized in that the thermosensitive element 210 additionally arranged in the heater circuit and the electric signal output end 200c capable of being connected to the display instrument are used for a user to read electric signal data of the heater circuit, and the user can convert the electric signal data into other values convenient to read so as to accurately know the circuit state of the heater for the automobile dryer;
especially under the short-circuit condition that the heater circuit is not controlled by the temperature controller 240, due to the characteristic that the resistance value of the thermosensitive element 210 changes along with the temperature change, the electric signal data also changes along with the temperature change, so that the data displayed by the display instrument is repeatedly displayed, a user can timely find the abnormal state of the repeated change of the electric signal data, and the short-circuit protection is realized.
For example, FIG. 4 shows a graph of resistance of a thermistor as a function of temperature in one embodiment; referring to fig. 4, in the present embodiment, the resistance value R (unit Ω) of the thermosensitive element 210 has a characteristic of increasing with an increase in temperature T (unit ℃). Then, under the short-circuit condition that the heater circuit is not controlled by the temperature controller 240, the heater continuously operates to continuously increase the temperature, so that the resistance value R of the thermosensitive element 210 continuously increases, the current in the heater circuit continuously decreases, and the electrical signal (voltage/current) collected by the electrical signal output end 200c significantly decreases; the current in the heater circuit decreases to reduce the heating power and the temperature, so that the resistance R of the thermosensitive element 210 decreases, the current in the heater circuit increases, and the electric signal (voltage/current) collected by the electric signal output end 200c continuously increases; when the heater continuously works for a period of time under the working condition of large current, the temperature is continuously increased, and then the resistance value R of the thermosensitive element 210 is increased, so that the data displayed by the display instrument is repeated, and a user can timely find the abnormal state of repeated change of the electrical signal data, timely shut down and maintain or replace the heater, thereby realizing short-circuit protection.
In one embodiment, the heater for an automobile dryer further comprises: and the analog-digital converter (A/D converter) is connected between the electric signal output end and the display instrument. The analog-digital converter is used for converting the analog signal output by the electric signal output end into a digital signal so as to be convenient for a user to read.
Further, in one embodiment, the electrical signal output terminal is specifically a voltage output terminal for outputting a voltage signal, specifically a voltage signal of a series node of the heat sensitive element 210 and the heat generating element 220; the analog-to-digital converter is a voltage-to-temperature converter for converting a voltage signal of the series node into a temperature value.
The voltage temperature converter can adopt the voltage temperature converter which is available on the market, and can convert the voltage signal into a temperature value. The voltage temperature converter can also adopt a common A/D converter and is matched with a voltage/temperature conversion table to convert a voltage signal into a temperature value; the voltage/temperature conversion table stores the conversion relationship between the voltage signal and the temperature value, and can be configured and stored in an Electronic Control Unit (ECU) of the automobile dryer in advance, so that the a/D converter can read the voltage signal and convert the voltage signal into the corresponding temperature value.
In each of the above embodiments, the heater for an automobile dryer further includes: and the alarm is connected to the electric signal output end.
The alarm logic of the alarm can be set according to the requirement; for example, an alarm may alarm when the voltage signal reaches a certain peak. The alarm can also be connected to the electric signal output end through the A/D converter/voltage temperature converter, and alarm is carried out when the temperature value reaches a certain peak value.
FIG. 5 illustrates the principle of temperature display and alarm of the heater for the automotive dryer in one embodiment; referring to fig. 5, in the present embodiment, the electrical signal output terminal 200c is connected to the a/D converter 310, the electrical signal output terminal 200c outputs an analog quantity of a voltage signal, and the a/D converter 310 converts the analog quantity of the voltage signal into a digital quantity of a temperature signal (i.e., a temperature value) and outputs the digital quantity of the temperature signal in combination with a voltage/temperature conversion table (in the voltage/temperature conversion table, the voltage signal and the temperature value have a negative correlation conversion relationship). The a/D converter 310 is further connected to a comparator 320, the comparator 320 is configured to compare the temperature value with a preset temperature threshold, and trigger the alarm 330 to alarm when the temperature value is greater than the temperature threshold; in the case where the temperature value is equal to or less than the temperature threshold value, the temperature value is displayed by the display meter 340. Therefore, the over-temperature alarm and protection of the heater for the automobile dryer are realized.
In the present embodiment, electronic components such as the a/D converter 310 and the comparator 320 may be integrated into the ECU of the dryer or the ECU of the brake system of the vehicle.
With continued reference to fig. 2 and 3, in one embodiment, the display instrument to which the electrical signal output 200c is connected is a dashboard of a vehicle to which the heater for the automotive dryer is fitted; alternatively, the display instrument connected to the electrical signal output end 200c is a separate instrument panel independent from the instrument panel of the vehicle; the specific configuration may be determined by the user, as long as the electrical signal of the heater circuit can be displayed at the right time.
In one embodiment, the thermistor 210 is a thermistor and the heating element 220 is a constant resistance heating resistor. In other embodiments, the thermosensitive element 210 may also be formed as an electronic element with other physical properties (mainly resistance) varying with temperature; similarly, the heat generating element 220 may be formed as other electronic elements capable of converting electrical energy into thermal energy.
In one embodiment, the heat sensitive element 210 and the heat generating element 220 are built into the heating rod 200; the heating function of the car dryer is realized by the heating rod 200.
Further, in one embodiment, the heater for the automobile dryer further includes a plug 250; the heating rod 200 and the temperature controller 240 are arranged at one end of the plug 250; the positive terminal 200a, the negative terminal 200b, and the electrical signal output terminal 200c respectively pass through the plug 250 and are connected to three pins 260 provided at the other end of the plug 250.
Through the three pins 260, the positive terminal 200a is conveniently connected to the positive electrode of the power supply, the negative terminal 200b is conveniently connected to the negative electrode of the power supply, and the power supply signal output terminal 200c is conveniently connected to devices such as an a/D converter/display instrument.
Referring to fig. 2 to 5, the operation of the heater for the automobile dryer in an embodiment scenario will be described, which includes:
the first stage is as follows: when the temperature is lower than the first designated temperature T1, the temperature controller 240 is closed, the heater circuit is conducted, and the heating rod 200 starts to heat; at this time, since the first designated temperature T1 is low, the resistance value of the corresponding thermosensitive element 210 is very small, and thus, the heater is not affected; in addition, the electrical signal output end 200c (specifically, the voltage output end in this embodiment) is connected to the a/D converter, and converts the analog quantity of the voltage signal into a temperature value, which is displayed on the display instrument.
And a second stage: when the temperature controller 240 is closed and the heater circuit is turned on, the heater temperature continuously rises, and the resistance value of the thermistor 21 increases with the temperature rise, so that the voltage signal output by the electrical signal output end 200c decreases with the temperature rise, and the temperature value displayed by the display instrument continuously rises at this stage according to the negative correlation conversion relationship between the voltage signal and the temperature value.
And a third stage: when the temperature of the heater reaches the second designated temperature T2, the temperature controller 240 is turned off, the circuit is turned off, the voltage signal output from the electrical signal output terminal 200c disappears, and the data of the display instrument disappears.
A fourth stage: when the heater circuit is short-circuited, the heater circuit is not controlled by the temperature controller 240 and is continuously heated, so that the temperature reaches a third designated temperature T3; due to the characteristics of the thermosensitive element 210, the resistance value increases sharply when the temperature exceeds the switching temperature (the second designated temperature T2), so that the current in the circuit decreases sharply to be approximately cut off, the heating power decreases, and the temperature decreases; at this time, since the heater circuit is in a constantly on state, the temperature continues to be lowered → raised → lowered → raised due to the characteristic of the heat sensitive element 210, and the alarm sounds intermittently. When a user hears the abnormal alarm sound, the heater can be checked to repair or replace a new heater, and short-circuit protection of the heater circuit is realized.
To sum up, the utility model discloses a heater for automobile dryer optimizes through to original heater circuit, adds equipment such as heat-sensitive element 210 and signal of telecommunication output 200c and optional voltage temperature converter 310, alarm 330, realizes functions such as the temperature in good time demonstration, the too high warning of temperature and short-circuit protection of heater for automobile dryer.
The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (8)
1. A heater for an automobile dryer, comprising:
the heat-sensitive element and the heating element are connected in series, and the heat-sensitive element and the heating element are respectively connected with a positive terminal and a negative terminal;
the temperature controller is connected between the positive electrode end and the thermosensitive element; and
and the electric signal output end is led out from the serial connection node of the thermosensitive element and the heating element and can be connected to a display instrument.
2. The heater for a dryer of an automobile according to claim 1, further comprising:
and the analog-digital converter is connected between the electric signal output end and the display instrument.
3. The heater for a dryer of an automobile of claim 2, wherein the electrical signal output terminal is a voltage output terminal for outputting a voltage signal;
the analog-to-digital converter is a voltage-to-temperature converter for converting the voltage signal of the series node into a temperature value.
4. The heater for the automobile dryer as claimed in any one of claims 1 to 3, further comprising:
and the alarm is connected to the electric signal output end.
5. The heater for an automobile dryer according to claim 1, wherein the display instrument is an instrument panel of a vehicle to which the heater for an automobile dryer is mounted; or
The display instrument is a separate instrument panel independent of the instrument panel of the vehicle.
6. The heater for an automobile dryer as claimed in claim 1, wherein said heat sensitive element is a thermistor, and said heat generating element is a heat generating resistor.
7. The heater for a dryer of an automobile as set forth in claim 1, wherein said heat sensitive element and said heat generating element are built in a heating rod.
8. The heater for an automobile dryer of claim 7, further comprising a plug;
the heating rod and the temperature controller are arranged at one end of the plug;
the positive terminal, the negative terminal and the electric signal output terminal respectively penetrate through the plug and are correspondingly connected with three pins arranged at the other end of the plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222458177.9U CN218103539U (en) | 2022-09-16 | 2022-09-16 | Heater for automobile drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222458177.9U CN218103539U (en) | 2022-09-16 | 2022-09-16 | Heater for automobile drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218103539U true CN218103539U (en) | 2022-12-20 |
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ID=84452898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222458177.9U Active CN218103539U (en) | 2022-09-16 | 2022-09-16 | Heater for automobile drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218103539U (en) |
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2022
- 2022-09-16 CN CN202222458177.9U patent/CN218103539U/en active Active
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