CN215808766U - Heating installation safety arrangement and heating installation - Google Patents
Heating installation safety arrangement and heating installation Download PDFInfo
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- CN215808766U CN215808766U CN202121952923.9U CN202121952923U CN215808766U CN 215808766 U CN215808766 U CN 215808766U CN 202121952923 U CN202121952923 U CN 202121952923U CN 215808766 U CN215808766 U CN 215808766U
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Abstract
The utility model discloses a heating equipment safety protection device and a heating equipment, wherein the heating equipment safety protection device comprises: the human body detection unit is used for detecting whether a person exists in the induction area and outputting a detection result; the temperature detection unit is used for detecting the temperature of the heating equipment, comparing the temperature detection result with a preset temperature and outputting a comparison result; and the protection switch unit is connected between the heating equipment and the power supply in series and used for disconnecting the electric connection between the heating equipment and the power supply when the human body detection unit detects that no person exists in the induction area or the temperature detection unit detects that the temperature of the heating equipment is more than or equal to the preset temperature. According to the utility model, the human body detection unit detects whether a person is in the induction area, and the protection switch unit cuts off the power of the heating equipment when no person is in the induction area, so that potential safety hazards are eliminated, and energy is saved.
Description
Technical Field
The utility model relates to the technical field of heating equipment, in particular to a safety protection device of heating equipment and the heating equipment.
Background
The heating installation is the electrical apparatus commonly used in cold season, and the power of heating installation is great usually, and current heating installation can only be carried out the manual work and switched on or off usually, forgets to close the heating installation when if the personnel leave, can lead to electric power extravagant on the one hand, and on the other hand also can lead to the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome one or more defects in the prior art and provides a heating equipment safety protection device and a heating equipment.
The purpose of the utility model is realized by the following technical scheme: a heating installation safety arrangement for connection in series between a heating installation and a power supply, comprising:
the human body detection unit is used for detecting whether a person exists in the induction area and outputting a detection result;
the temperature detection unit is used for detecting the temperature of the heating equipment, comparing the temperature detection result with a preset temperature and outputting a comparison result;
and the protection switch unit is connected between the heating equipment and the power supply in series and used for disconnecting the electric connection between the heating equipment and the power supply when the human body detection unit detects that no person exists in the induction area or the temperature detection unit detects that the temperature of the heating equipment is more than or equal to the preset temperature.
Preferably, the heating installation safety protection device further comprises:
the switch power supply is electrically connected with the human body detection unit and the temperature detection unit and is used for being electrically connected with a power supply; the switch power supply is used for connecting and disconnecting the electric connection between the heating equipment safety protection device and the power supply and transforming the current input into the heating equipment safety protection device.
Preferably, the protection switch unit comprises a thyristor and a first resistor, the thyristor is connected in series between the heating equipment and the power supply, one end of the first resistor is connected with a connection point of the thyristor and the heating equipment, and the other end of the first resistor circuit is grounded.
Preferably, the human body detection unit comprises a human body proximity sensor and a first diode, the output end of the human body proximity sensor is connected with the anode of the first diode, and the cathode of the first diode is connected with the trigger end of the controllable silicon.
Preferably, the temperature detection unit comprises a temperature sensor, a voltage comparator, a second resistor, a sixth resistor, a triode and a second diode, the temperature sensor is a PT100 temperature sensor, the triode is an NPN type triode, a first end of the temperature sensor is grounded through the sixth resistor, the first end of the temperature sensor is connected to a high threshold input end of the voltage comparator, a second end and a third end of the temperature sensor are connected to a low threshold input end of the voltage comparator, the third end of the temperature sensor is connected to a reference voltage through the third resistor, a comparison voltage end of the voltage comparator is connected to the reference voltage, an output end of the voltage comparator is connected to a base electrode of the triode through a fifth resistor, an output end of the voltage comparator is connected to a collector electrode of the triode after passing through the fourth resistor and the second resistor in sequence, an emitter electrode of the triode is grounded, and the collector of the triode is connected with the anode of a second diode, and the cathode of the second diode is connected with the trigger end of the controllable silicon.
Preferably, the silicon controlled rectifier is a bidirectional silicon controlled rectifier.
A heating device comprises the heating device safety protection device.
The utility model has the beneficial effects that:
(1) the human body detection unit detects whether a person exists in the induction area, and the protection switch unit cuts off the power of the heating equipment when no person exists in the induction area, so that potential safety hazards are eliminated, and energy is saved;
(2) the temperature detection unit detects the temperature of the heating equipment, and the protection switch unit cuts off the power of the heating equipment when the temperature of the heating equipment is too high, so that potential safety hazards are eliminated, and the safety is improved;
(3) the switching power supply can independently control the on-off of the heating equipment safety protection device, and cannot influence the normal use of the heating equipment.
Drawings
FIG. 1 is a block diagram of a safety protection device for a heating installation;
fig. 2 is a circuit diagram of a safety protection device of a heating device.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1-2, the present embodiment provides a heating device safety protection device and a heating device:
example one
As shown in fig. 1, a heating installation safety protection device is used for being connected between a heating installation and a power supply in series. Generally, the heating installation safety protection device can be installed on the heating installation or can be arranged independently of the heating installation (i.e. the heating installation safety protection device is not installed on the heating installation). The heating equipment can be a small sun, a fan heater and the like, and the power supply is generally 220V commercial power.
The heating equipment safety protection device comprises a human body detection unit, a temperature detection unit and a protection switch unit.
The human body detection unit is used for detecting whether a person exists in the induction area and outputting a detection result; the temperature detection unit is used for detecting the temperature of the heating equipment, comparing the temperature detection result with a preset temperature and outputting a comparison result; the protection switch unit is connected between the heating equipment and the power supply in series and used for disconnecting the electric connection between the heating equipment and the power supply when the human body detection unit detects that no person exists in the induction area or the temperature detection unit detects that the temperature of the heating equipment is greater than or equal to the preset temperature.
In the embodiment, when no person is detected in the induction area, the heating equipment is powered off, so that potential safety hazards are eliminated, the heating safety is improved, and energy can be saved; and when the temperature of the heating equipment is detected to be more than or equal to the preset temperature, the heating equipment is powered off, so that the potential safety hazard is eliminated, and the heating safety is improved.
In some embodiments, the heating equipment safety protection device further comprises a switching power supply, wherein the switching power supply is electrically connected with the human body detection unit and the temperature detection unit and is used for being electrically connected with a power supply; the switch power supply is used for connecting and disconnecting the electric connection between the heating equipment safety protection device and the power supply and transforming the current input into the heating equipment safety protection device. Namely, the opening and closing of the heating equipment safety protection device can be independently controlled through the switching power supply, a user can select whether to use the heating equipment safety protection device according to needs, and the opening and closing of the heating equipment safety protection device cannot influence the normal use of corresponding heating equipment.
As shown in fig. 2, in some embodiments, the protection switch unit includes a thyristor Q1 and a first resistor R1, the thyristor Q1 is BAT16, the resistance of the first resistor R1 is 4.7k Ω, the thyristor Q1 is configured to be connected in series between the heating device U5 and a power supply, one end of the first resistor R1 is connected to a connection point between the thyristor Q1 and the heating device U5, and the other end of the first resistor R1 circuit is grounded. The thyristor Q1 switches on the circuit between the heating unit U5 and the power supply when the input is high, and the thyristor Q1 switches off the circuit between the heating unit U5 and the power supply when the input is low.
Human detection unit includes human proximity sensor U1 and first diode D1, human proximity sensor U1's model is HC-SR50, first diode D1's model is IN4007, human proximity sensor U1's output is connected with first diode D1's positive pole, first diode D1's negative pole with silicon controlled Q1's trigger end is connected. When the human body proximity sensor U1 detects that a person exists in the sensor, high level is continuously output, and the controllable silicon Q1 is conducted; when no person in the induction area is detected, low level is output, and the controlled silicon Q1 is disconnected.
The temperature detection unit comprises a temperature sensor U2, a voltage comparator U3, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a triode Q2 and a second diode D2, wherein the temperature sensor is a PT100 temperature sensor, the triode is an NPN type triode, the model of the voltage comparator U3 is MIC841N, the resistance value of the second resistor R2 is 1k omega, the resistance value of the third resistor R3 is 510 omega, the resistance value of the fourth resistor R4 is 4.7k omega, the resistance value of the fifth resistor R5 is 1k omega, the resistance value of the sixth resistor R6 is 131 omega, and the model of the second diode D2 is IN 4007. A first end of the temperature sensor U2 is grounded via a sixth resistor R6, a first end of the temperature sensor U2 is connected to a high threshold input terminal (HTH terminal) of a voltage comparator U3, second and third ends of the temperature sensor U2 are connected to a low threshold input terminal (LTH terminal) of a voltage comparator U3, a third end of the temperature sensor U2 is connected to a reference voltage (5V) via a third resistor R3, a comparison voltage of the voltage comparator U3 is connected to the reference voltage (5V), an output end of the voltage comparator U3 is connected to a base of a transistor Q2 via a fifth resistor R5, an output end of the voltage comparator U3 is connected to one end of a fourth resistor R4, the other end of the fourth resistor R4 is connected to one end of a second resistor R2, the other ends of the second resistor R2 are connected to a collector of a transistor Q2, an emitter of the transistor Q2 is grounded, and a collector of the transistor Q2 is connected to a collector 2D of a diode 2, the cathode of the second diode D2 is connected with the trigger end of the thyristor Q1. At room temperature (25 ℃), the resistance of the temperature sensor U2 is 110 Ω; when the temperature is 300 ℃, the resistance of the temperature sensor U2 is 212 Ω, the input voltage difference between the LTH end and the HTH end of the voltage comparator U3 is 1.25V, the voltage comparator U3 outputs a high level, and when the temperature is less than 300 ℃, the voltage comparator U3 outputs a low level, the triode Q2 negates the output level, drives the thyristor Q1, and controls the on and off of the thyristor Q1.
The switching power supply U4 is used for converting 220V current into 5V current for the human body detection unit and the temperature detection unit.
Example two
A heating device, comprising the heating device safety protection device in the first embodiment. Generally, the heating equipment comprises a heating equipment body and a heating equipment safety protection device, wherein the heating equipment body is electrically connected with a power supply through the heating equipment safety protection device.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. A heating installation safety arrangement for connecting in series between a heating installation and a power supply, comprising:
the human body detection unit is used for detecting whether a person exists in the induction area and outputting a detection result;
the temperature detection unit is used for detecting the temperature of the heating equipment, comparing the temperature detection result with a preset temperature and outputting a comparison result;
and the protection switch unit is connected between the heating equipment and the power supply in series and used for disconnecting the electric connection between the heating equipment and the power supply when the human body detection unit detects that no person exists in the induction area or the temperature detection unit detects that the temperature of the heating equipment is more than or equal to the preset temperature.
2. A heating installation safety arrangement as claimed in claim 1, further comprising:
the switch power supply is electrically connected with the human body detection unit and the temperature detection unit and is used for being electrically connected with a power supply; the switch power supply is used for connecting and disconnecting the electric connection between the heating equipment safety protection device and the power supply and transforming the current input into the heating equipment safety protection device.
3. The heating equipment safety protection device of claim 1, wherein the protection switch unit comprises a thyristor and a first resistor, the thyristor is used for being connected between the heating equipment and a power supply in series, one end of the first resistor is connected with a connection point of the thyristor and the heating equipment, and the other end of the first resistor circuit is grounded.
4. The heating appliance safety protection device according to claim 3, wherein the human body detection unit comprises a human body proximity sensor and a first diode, an output end of the human body proximity sensor is connected with an anode of the first diode, and a cathode of the first diode is connected with a trigger end of the controllable silicon.
5. The heating equipment safety protection device according to claim 3, wherein the temperature detection unit comprises a temperature sensor, a voltage comparator, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a triode and a second diode, the temperature sensor is a PT100 temperature sensor, the triode is an NPN type triode, the first end of the temperature sensor is grounded through the sixth resistor, the first end of the temperature sensor is connected with the high threshold input end of the voltage comparator, the second end and the third end of the temperature sensor are connected with the low threshold input end of the voltage comparator, the third end of the temperature sensor is connected with a reference voltage through the third resistor, the comparison voltage end of the voltage comparator is connected with the reference voltage, the output end of the voltage comparator is connected with the base electrode of the triode through the fifth resistor, the output end of the voltage comparator is connected with the collector electrode of the triode after sequentially passing through the fourth resistor and the second resistor, the emitting electrode of the triode is grounded, the collector electrode of the triode is connected with the anode of a second diode, and the cathode of the second diode is connected with the trigger end of the controlled silicon.
6. A heating installation safety arrangement as claimed in claim 3, wherein the thyristors are bidirectional thyristors.
7. Heating installation, characterized in that it comprises a heating installation safety protection device according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121952923.9U CN215808766U (en) | 2021-08-19 | 2021-08-19 | Heating installation safety arrangement and heating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121952923.9U CN215808766U (en) | 2021-08-19 | 2021-08-19 | Heating installation safety arrangement and heating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215808766U true CN215808766U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121952923.9U Active CN215808766U (en) | 2021-08-19 | 2021-08-19 | Heating installation safety arrangement and heating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215808766U (en) |
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2021
- 2021-08-19 CN CN202121952923.9U patent/CN215808766U/en active Active
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