CN109028256B - Heating equipment and control device and method thereof - Google Patents
Heating equipment and control device and method thereof Download PDFInfo
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- CN109028256B CN109028256B CN201810778654.5A CN201810778654A CN109028256B CN 109028256 B CN109028256 B CN 109028256B CN 201810778654 A CN201810778654 A CN 201810778654A CN 109028256 B CN109028256 B CN 109028256B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001012 protector Effects 0.000 claims abstract description 68
- 238000001514 detection method Methods 0.000 claims abstract description 40
- 238000001914 filtration Methods 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a heating device and a control device and a method thereof, wherein the control device comprises: the overtemperature protector is arranged in a power supply circuit of the heating body of the heating equipment; the detection device is connected with the over-temperature protector and is used for detecting feedback voltage for representing the working state of the over-temperature protector, and the working state comprises an open state and a closed state; and the prompting device is connected with the detection device and used for sending out corresponding prompting information according to the feedback voltage. After the over-temperature protector is disconnected, the over-temperature protector is detected by the over-temperature detection device to obtain corresponding feedback voltage, the prompt device is controlled to send prompt information representing faults, the user is prompted to power off and restart, after the user powers off, the over-temperature protector is closed, the feedback voltage detected by the detection device controls the prompt device to send prompt information representing normal work. The state of the heating equipment can be known clearly by the user, the user is prompted to perform specific operation, and better experience is provided for the user.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to heating equipment and a control device and method thereof.
Background
With the development of society and the improvement of human living standard, people have higher requirements on the functions and experience effects of living electrical appliances, an electric heater is used as a heating appliance, temperature control is important to ensure safety, in the prior art, part of the electric heater adopts the combination of an automatic reset temperature controller and a fuse link to realize temperature control, however, once the fuse link is broken, the electric heater needs to be replaced again, the replacement is complex, and the after-sale burden is increased; another kind adopts the outage to reset the temperature controller usually and plays the effect of accuse temperature protection, but if the outage resets the temperature controller and need can reset after the outage, after the temperature controller disconnection, the load is out of work, but, because the power of electric heater does not turn off, the display panel shows normally, and the user is difficult to discover that the electric heater is in unoperated state, brings relatively poor use experience for the user.
Disclosure of Invention
To this end, according to a first aspect, an example of the present invention provides a control device of a heating apparatus, including: the overtemperature protector is arranged in a power supply circuit of a heating body of the heating equipment;
the detection device is connected with the over-temperature protector and used for detecting feedback voltage for representing the working state of the over-temperature protector, and the working state comprises an open state and a closed state;
and the prompting device is connected with the detection device and used for sending out corresponding prompting information according to the feedback voltage.
Optionally, the over-temperature protector comprises a power-off reset protector.
Optionally, the control device further comprises: the relay is respectively connected with the heating body and the detection device; when the detection device detects that the over-temperature protector is in an off state, at least one path of the relay is controlled to be attracted.
Optionally, the voltage detection device includes: the input end of the voltage detection circuit is respectively connected with the two ends of the over-temperature protector; the voltage detection circuit is used for detecting the voltages at the two ends of the over-temperature protector and outputting feedback voltage based on the voltage values at the two ends of the over-temperature protector; and the controller receives the feedback voltage and is used for controlling the prompting device to send out a fault prompting signal when the over-temperature protector is in a disconnection state when the value of the feedback voltage is greater than a preset value.
Optionally, the voltage detection circuit comprises: and the voltage division module is used for dividing the voltages at the two ends of the over-temperature protector to obtain the feedback voltage.
Optionally, the voltage detection circuit comprises: and the filtering module is connected with the voltage division module and is used for filtering the feedback voltage.
Optionally, the controller is further configured to determine whether a duration that the value of the feedback voltage is greater than a preset value is greater than a preset duration; and when the continuous time length that the value of the feedback voltage is greater than the preset value is greater than the preset time length or not, the over-temperature protector is in a disconnection state, and the control prompting device sends out a fault prompting signal.
According to a second aspect, embodiments of the present invention provide a heating apparatus, comprising: a heat generating body, as the control device for a heating apparatus according to any one of the above first aspect.
Optionally, the heating device comprises an electric heater.
According to a third aspect, an embodiment of the present invention provides a heating apparatus control method for the heating apparatus control device of any one of the first aspect described above, the method including: obtaining a feedback voltage for representing the working state of the over-temperature protector, wherein the working state comprises an open state and a closed state; and controlling the prompting device to send out corresponding prompting information according to the feedback voltage.
Optionally, controlling the prompting device to send out corresponding prompting information according to the feedback voltage includes: judging whether the value of the feedback voltage of the detection device is larger than a preset value or not; when the value of the feedback voltage is larger than the preset value, the over-temperature protector is in a disconnection state, and the control prompting device sends out a fault prompting signal.
Optionally, when the value of the feedback voltage is greater than a preset value, the method further includes: judging whether the duration of the feedback voltage value larger than the preset value is larger than the preset duration or not; when the continuous time that the value of the feedback voltage is greater than the preset value is greater than the preset time, the over-temperature protector is in a disconnection state, and the control prompting device sends out a fault prompting signal.
Optionally, when the over-temperature protector is in an off state, at least one path of the relay is controlled to be attracted.
The embodiment of the invention provides heating equipment and a control device and a control method thereof. After the over-temperature protector is disconnected, the over-temperature protector is detected by the over-temperature detection device to obtain corresponding first feedback voltage, and prompt information representing faults sent by the control prompt device can prompt voice 'please power off and restart' or can display words for prompting such as 'please power off and restart' on a display screen. And prompting the user to restart after power failure, closing the over-temperature protector after the user powers off, and controlling the prompting device to send prompt information representing normal work by the second feedback voltage detected by the detection device. The state of the heating equipment can be known clearly by the user, the user is prompted to perform specific operation, and better experience is provided for the user.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 shows a schematic view of a control device of the heating apparatus of the present embodiment;
fig. 2 shows a schematic diagram of a voltage detection circuit of the present embodiment;
fig. 3 shows a schematic diagram of a control method of the heat generating device of the present embodiment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a control device for a heating apparatus, where the heating apparatus may be an electric heater, and may also be other heating appliances, such as an electric kettle, and the like, and the control device for the heating apparatus as shown in fig. 1 may include: the overtemperature protector 10 is arranged in a power supply circuit of the heating element 40 of the heating equipment; the detection device 20 is connected with the over-temperature protector 10 and is used for detecting feedback voltage for representing the working state of the over-temperature protector 10, wherein the working state comprises an open state and a closed state; and the prompting device 30 is connected with the detection device 20 and used for sending out corresponding prompting information according to the feedback voltage. In this embodiment, the over-temperature protector 10 may be a power-off reset protector, and after the power-off reset over-temperature protector 10 is disconnected for the over-temperature protector 10, the power supply of the electric equipment may not be completely cut off, and the over-temperature protector 10 is maintained not to reset by adopting a relatively small current. The aim is that the user can reset after the power supply is cut off. The safety of the user can be ensured. Optionally, after the over-temperature protector 10 is disconnected, it will not reset, and a smiling current is needed to maintain, so the control device may further include at least two relays, in this embodiment, one of the relays may control the heating element 40, and the other controls the over-temperature protection device, and the relay may also be a relay of the multi-output, and may control at least two paths simultaneously. When the detection device 20 detects that the over-temperature protector 10 is in the off state, at least one path of the relay is controlled to be closed. To maintain the over temperature protector 10 in the off state.
In the present embodiment, when the heating element 40 generates heat abnormally, the overtemperature protection device 10 is turned off, the detection device 20 detects the operating state of the overtemperature protection device 10 and feeds back a corresponding feedback voltage according to the operating state, and the display device 30 can be controlled to output a corresponding display message by using the feedback voltage as a control signal. Specifically, the prompting device 30 may be a buzzer, a voice broadcaster, a display screen, or the like. In this embodiment, after the over-temperature protector 10 is disconnected, the over-temperature detection device 20 detects the detected over-temperature to obtain the corresponding first feedback voltage, and the control prompt device 30 sends a prompt message representing a fault, for example, to prompt a voice "please restart after power failure" or to display a word for prompting such as "please restart after power failure" on the display screen. Prompting the user to restart after power-off, closing the over-temperature protector 10 after the power-off of the user, and controlling the prompting device 30 to send out prompt information representing normal work by detecting the second feedback voltage detected by the detection device 20. The state of the heating equipment can be known clearly by the user, the user is prompted to perform specific operation, and better experience is provided for the user.
In an alternative embodiment, the detecting device 20 may include a detecting circuit for detecting a voltage and a processor for processing the detected feedback voltage, specifically, as shown in fig. 2, input terminals of the voltage detecting circuit are respectively disposed at two ends of the over-temperature protector 10, and are configured to detect voltages at two ends of the over-temperature protector 10 and output the feedback voltage based on a voltage value at two ends of the over-temperature protector 10; specifically, the voltage detection circuit can include voltage division module 21, carries out the partial pressure to the voltage at overtemperature prote ware 10 both ends, obtains less magnitude of voltage, and overtemperature prote ware 10 is when the closed in the wire, and both ends voltage is nearly zero, and the voltage that obtains through the partial pressure is more close to zero, and consequently, the feedback voltage when overtemperature prote ware 10 closes can be approximately zero. When the over-temperature protector 10 is disconnected, a very large impedance is presented, the voltage at two ends of the impedance is the power supply voltage of the heating equipment, and the feedback voltage obtained through voltage division is greater than zero. In order to prevent the fluctuation of the feedback voltage, in the present embodiment, a filtering module 22 is disposed between the voltage dividing module 21 and the controller to filter the feedback voltage. As shown in fig. 2, the voltage detection circuit includes a first resistor R6, one end of which is used to connect with one end of the over-temperature protector 10, a second resistor R14, one end of which is used to connect with the other end of the over-temperature protector 10, the other end of the first resistor R6 is connected with the anode of a first diode D8, the other end of the second resistor R14 is connected with the cathode of the diode, the first resistor R6, the second resistor R14 and the first diode D8 constitute a voltage division module 21, and the feedback voltage is the voltage at two ends of the second resistor R14; the first capacitor C11 is connected in parallel with the second capacitor C17 and in parallel with the second resistor R14, the other end of the second resistor R14 is connected to one end of the third resistor R15, the other end of the third resistor R15 is connected to the input end of the controller, and the third resistor R15 serves as a current-limiting resistor.
In this embodiment, an a/D converter may be further included between the voltage detection circuit and the controller, and after the feedback voltage enters the controller, the controller determines the magnitude of the feedback voltage and determines the operating state of the over-temperature protector 10 according to the magnitude of the voltage. Specifically, the controller may determine whether the value of the feedback voltage is greater than a preset value; when the value of the feedback voltage is greater than the preset value, the over-temperature protector 10 is in a disconnected state, and the control prompting device 30 sends out a fault prompting signal. Further, in order to prevent the voltage fluctuation from affecting the accuracy of the detection result, in this embodiment, after the feedback voltage is determined to be greater than the preset voltage, it may be determined whether a duration that the value of the feedback voltage is greater than the preset value is greater than a preset duration; when the duration that the value of the feedback voltage is greater than the preset value is greater than the preset duration, the over-temperature protector 10 is in a disconnected state, and the control prompting device 30 sends out a fault prompting signal. In this embodiment, the preset value may be a minimum value of the feedback voltage when the analog temperature limiter is disconnected under the conditions of 220V of the mains supply, 120V of the low voltage and 265V of the high voltage, and the specific preset value may be 1V to 5V. The preset time period may be 1s-5 s.
The invention also provides a heating device which comprises a heating body, a heating resistor and the control device described in the embodiment. The heating device may be an electric heater.
An embodiment of the present invention further provides a method for controlling a heating device, which is applicable to the control device in the foregoing embodiment, and as shown in fig. 3, the method may include the following steps:
and S10, obtaining feedback voltage for representing the working state of the over-temperature protector. The working state comprises an open state and a closed state;
s20, judging whether the value of the feedback voltage of the detection device is larger than a preset value or not; by feeding back the duration of the voltage, it is possible to prevent the voltage fluctuation from affecting the detected revolution determination. When the value of the feedback voltage is greater than the preset value, the process proceeds to step S30. When the value of the feedback voltage is smaller than the preset value, the process proceeds to step S50.
S30, judging whether the duration time that the value of the feedback voltage is greater than the preset value is greater than the preset time; when the duration that the value of the feedback voltage is greater than the preset value is greater than the preset duration, the process proceeds to step S40. When the duration that the value of the feedback voltage is greater than the preset value is less than the preset duration, the process proceeds to step S50.
And S40, controlling the prompting device to send out a fault prompting signal.
And S50, controlling the prompting device to send out a normal prompting signal.
Specifically, when the heating element generates heat abnormally, the over-temperature protector is disconnected, the detection device detects the working state of the over-temperature protector and feeds back corresponding feedback voltage according to the working state, and the feedback voltage can be used as a control signal to control the prompt device to send out corresponding prompt information. Specifically, the prompting device can be a buzzer, a voice broadcast device or a display screen and the like. In this embodiment, after the over-temperature protector is disconnected, the over-temperature detector detects the over-temperature protector to obtain the corresponding first feedback voltage, and the control prompting device sends a prompting message representing a fault, for example, to prompt a voice "please power off and restart" or to display a word for prompting such as "please power off and restart" on the display screen. And prompting the user to restart after power failure, closing the over-temperature protector after the user powers off, and controlling the prompting device to send prompt information representing normal work by the second feedback voltage detected by the detection device. The state of the heating equipment can be known clearly by the user, the user is prompted to perform specific operation, and better experience is provided for the user.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (11)
1. A control device for a heating apparatus, comprising:
the overtemperature protector is arranged in a power supply circuit of the heating body of the heating equipment;
the detection device is connected with the over-temperature protector and is used for detecting feedback voltage for representing the working state of the over-temperature protector, and the working state comprises an open state and a closed state;
the prompting device is connected with the detection device and used for sending out corresponding prompting information according to the feedback voltage;
wherein the over-temperature protector comprises a power-off reset protector;
the control device further includes: the relay, the relay can be at least two, and one of them control heat-generating body, another control overtemperature prote device, the relay still can be a relay of multiplexed output, can two at least ways of simultaneous control, when detection device detects that overtemperature prote ware is in the off-state, control the actuation of at least all the way of relay.
2. The control device according to claim 1, wherein the voltage detection device includes:
the input end of the voltage detection circuit is respectively connected with the two ends of the over-temperature protector; the over-temperature protector is used for detecting the voltage at two ends of the over-temperature protector and outputting feedback voltage based on the voltage values at two ends of the over-temperature protector;
and the controller is used for receiving the feedback voltage and controlling the prompting device to send out a fault prompting signal when the over-temperature protector is in a disconnection state when the value of the feedback voltage is greater than a preset value.
3. The control device of claim 2, wherein the voltage detection circuit comprises:
and the voltage division module is used for dividing the voltages at the two ends of the over-temperature protector to obtain the feedback voltage.
4. The control device of claim 3, wherein the voltage detection circuit comprises:
and the filtering module is connected with the voltage division module and is used for filtering the feedback voltage.
5. The control device of claim 2, wherein the controller is further configured to determine whether a duration of time during which the value of the feedback voltage is greater than a preset value is greater than a preset duration;
and when the continuous time length that the value of the feedback voltage is greater than the preset value is greater than the preset time length or not, the over-temperature protector is in a disconnection state, and the prompting device is controlled to send out a fault prompting signal.
6. A heating apparatus, comprising:
a heating element which is provided with a heating element,
control means of the heating apparatus according to any one of claims 1 to 5.
7. The heating apparatus of claim 6, wherein the heating apparatus comprises an electric heater.
8. A method for controlling a heating apparatus, characterized in that the method is used for a control device of a heating apparatus according to any one of claims 1-5, the method comprising:
obtaining a feedback voltage for representing the working state of the over-temperature protector, wherein the working state comprises an open state and a closed state;
and controlling the prompting device to send out corresponding prompting information according to the feedback voltage.
9. The control method according to claim 8, wherein the controlling the prompting device to send out the corresponding prompting message according to the feedback voltage comprises:
judging whether the value of the feedback voltage of the detection device is larger than a preset value or not;
and when the value of the feedback voltage is larger than a preset value, the over-temperature protector is in a disconnection state, and the prompting device is controlled to send out a fault prompting signal.
10. The control method of claim 9, wherein when the value of the feedback voltage is greater than a preset value, further comprising:
judging whether the duration of the feedback voltage value larger than a preset value is larger than a preset duration or not;
when the duration that the value of the feedback voltage is greater than the preset value is greater than the preset duration, the over-temperature protector is in a disconnection state, and the prompting device is controlled to send out a fault prompting signal.
11. The control method according to any one of claims 8 to 10,
when the overtemperature protection device is in a disconnected state, the relay is controlled to be attracted with the detection device all the way, or the relay is controlled to be attracted with the heating element all the way, and the relay is attracted with the detection device all the way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810778654.5A CN109028256B (en) | 2018-07-16 | 2018-07-16 | Heating equipment and control device and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810778654.5A CN109028256B (en) | 2018-07-16 | 2018-07-16 | Heating equipment and control device and method thereof |
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| CN109028256A CN109028256A (en) | 2018-12-18 |
| CN109028256B true CN109028256B (en) | 2021-10-01 |
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| CN201810778654.5A Active CN109028256B (en) | 2018-07-16 | 2018-07-16 | Heating equipment and control device and method thereof |
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Families Citing this family (1)
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| CN115950018A (en) * | 2022-12-09 | 2023-04-11 | 珠海格力电器股份有限公司 | Humidifying device and method and humidifier |
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