CN210491222U - Heating system capable of being cascaded - Google Patents
Heating system capable of being cascaded Download PDFInfo
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- CN210491222U CN210491222U CN201920758230.2U CN201920758230U CN210491222U CN 210491222 U CN210491222 U CN 210491222U CN 201920758230 U CN201920758230 U CN 201920758230U CN 210491222 U CN210491222 U CN 210491222U
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- heating
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- control switch
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Abstract
The utility model provides a heating system capable of being cascaded, which comprises a main heating unit and a plurality of auxiliary heating units which can be electrically spliced with the main heating unit and can be electrically spliced with each other, wherein the main heating unit and the auxiliary heating units are respectively provided with a heating circuit and a plurality of connecting terminals which enable the heating circuits to form electrical parallel connection; the main heating unit is also provided with a control circuit, a main power control switch and a power acquisition circuit. The main power control switch is in a conducting state after the system is electrified; a power acquisition circuit is arranged on a main circuit of the heating system to acquire real-time electric parameter values and calculate corresponding real-time power values according to the electric parameter values; and comparing the real-time power value with a preset upper limit power value, and disconnecting the power supply of the whole heating system through the main power control switch when the real-time power value is larger than the upper limit power value.
Description
Technical Field
The utility model relates to a cooking utensil with electric heating function, in particular to a heating system capable of being cascaded.
Background
At present, cooking household appliances with heating functions, such as electric baking trays, electric heating plates, electric rice cookers, electromagnetic ovens, electric pressure cookers, electric ceramic ovens, electric kettles and the like, all operate independently, and in similar products, the implementation scheme of mutual cascade is rarely considered. In some application occasions, a larger or more flexibly combined heating surface needs to be realized, obviously, no corresponding solution is provided in the prior art, and a plurality of similar electrical appliances can only be used at the same time, so that the cost is undoubtedly increased, and the plugging and the placing of power lines of the plurality of electrical appliances in the occasions with limited electrical sockets are also headache. It is seen that the patent considers and studies the problem of solving the power supply problem of a plurality of electric heating units assembled with each other by a cascade power supply mode, wherein the design of the power supply connection mode of the heating units and the design of electric power detection and control are involved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems mentioned in the background art, the present invention provides a heating system capable of cascading, which comprises the following specific technical contents:
a heating system capable of being cascaded comprises a main heating unit and a plurality of auxiliary heating units which can be electrically spliced with the main heating unit and can be electrically spliced with each other, wherein heating circuits and a plurality of connecting terminals which enable the heating circuits to be electrically connected in parallel are respectively arranged on the main heating unit and the auxiliary heating units; the main heating unit is also provided with a control circuit, a main power control switch and a power acquisition circuit, the main power control switch is controlled by the control circuit to realize the on/off of the power supply of the whole heating system, the power acquisition circuit is connected with the heating circuit to realize the acquisition of real-time power, and the sampling value is output to the control circuit.
In one or more embodiments of the present invention, the heating circuit includes a sub-power control switch for controlling on/off of the heating circuit.
In one or more embodiments of the present invention, the auxiliary power control switch is automatically turned on/off according to the rated parameters, or is controlled to be turned on/off.
In one or more embodiments of the present invention, the power collecting circuit includes a sampling resistor RS, the sampling resistor RS is disposed on the trunk line connected to the heating circuit, and the two ends of the sampling resistor RS adopt an isolated or non-isolated circuit to output the sampling value to the control circuit.
In one or more embodiments of the present invention, the main heating unit is provided with a voltage sampling circuit for detecting an input voltage value, and the control circuit controls the on/off of the main power control switch according to a sampling value of the power sampling circuit and a sampling value of the voltage sampling circuit.
In one or more embodiments of the present invention, the voltage sampling circuit includes diodes D1 and D2, resistors R3 and R4, and a capacitor C2; the resistors R3 and R4 are grounded after being connected in series, the two ends of the resistor R4 are connected in parallel with the capacitor C2, the connection point of the resistors R3 and R4 serves as the output end of the voltage sampling circuit and is connected to the control circuit, the resistor R3 is connected with the cathodes of the diodes D1 and D2 respectively, and the anodes of the diodes D1 and D2 are connected with the power input end respectively.
The utility model discloses an superiority is presented: the power supply cascade among the assembled multi-modules is realized through the electrical assembly of the main heating unit and the auxiliary heating units, the heating area with the required size can be freely assembled through the connecting terminals according to the requirements of application occasions, and the number of the heating areas is not limited; after the assembly, the power supply on/off of the power supply bus is controlled through the detection and judgment of the total real-time power, so that the heating protection of a plurality of heating units is realized; in addition, the heating element is not in a specific heating body form, and can be a resistive heating load such as an electric heating tube, PTC (positive temperature coefficient), infrared rays, a thick film and the like, or a non-resistive heating load such as electromagnetic heating and the like, so that the heating element has better technical performance and applicability.
Drawings
Fig. 1 is a schematic illustration of a splicing arrangement of a cascadable heating system.
Fig. 2 is a schematic diagram of an implementation structure of a main heating unit of a heating system capable of cascading.
Fig. 3 is a schematic diagram of a second implementation structure of the main heating unit of the heating system capable of cascading.
Fig. 4 is a schematic structural diagram of an auxiliary heating unit of a cascadable heating system.
Detailed Description
The scheme of the present application is further described below with reference to the accompanying figures 1-4:
a heating system capable of being cascaded comprises a main heating unit 1 and a plurality of auxiliary heating units 2 which can be electrically spliced with the main heating unit 1 and can be electrically spliced with each other, wherein heating circuits and a plurality of connecting terminals 3 which enable the heating circuits to be electrically connected in parallel are respectively arranged on the main heating unit 1 and the auxiliary heating units 2; still be equipped with control circuit 11, main power control switch 12 and power acquisition circuit on the main heating unit 1, main power control switch 12 is controlled by control circuit 11 is in order to realize whole heating system's power supply on/off, power acquisition circuit links to each other with heating circuit in order to realize the collection to real-time power, its sampling value export extremely control circuit 11, heating circuit includes series connection's electric heat-generating body 4 and auxiliary power control switch 5.
Specifically, in the main heating unit 1, the power control switch 12, the heating circuit and the power acquisition circuit are connected in series between the L line and the N line, and two ends of the heating circuit are respectively connected to the connection terminal 3 on the main heating unit 1 through leads; in the auxiliary heating unit 2, both ends of a heating circuit thereof are respectively lead-connected to the connection terminals 3 on the auxiliary heating unit 2; the auxiliary power control switch 5 can adopt power switches in various forms such as silicon controlled rectifier, transistor, IGBT and the like; for example, an overcurrent relay switch may be used to turn off when the current flowing through the electric heating element 4 is too large, so as to protect the electric heating element 4 and the main heating unit 1 or the auxiliary heating unit 2. The number of the connecting terminals 3 of the main heating unit 1 and the auxiliary heating unit 2 can be one, so that one-to-one splicing is realized; or a plurality of connecting terminals 3 positioned at different sides can be used for realizing the splicing use of the multiple heating units.
The power acquisition circuit can adopt the following two implementation modes:
in a first mode, referring to fig. 2, the power acquisition circuit includes a sampling resistor RS, a current limiting resistor R1, and a capacitor C1, the sampling resistor RS is connected in series with the heating circuit, the current limiting resistor R1 is connected to one end of the sampling resistor RS for electrical output, and the capacitor C1 is connected to an output end of the power acquisition circuit for filtering.
Secondly, referring to fig. 3, the power collecting circuit includes a sampling resistor RS, a current limiting resistor R1 and a coupling unit U1, the sampling resistor RS is connected in series with the heating circuit, the current limiting resistor R1 is connected between the sampling resistor RS and the primary side of the coupling unit U1, and the secondary side of the coupling unit U1 outputs electricity.
A voltage sampling circuit is also arranged in the main heating unit 1 and comprises diodes D1 and D2, resistors R3 and R4 and a capacitor C2; the resistors R3 and R4 are grounded after being connected in series, the two ends of the resistor R4 are connected in parallel with the capacitor C2, the connection point of the resistors R3 and R4 serves as the output end of the voltage sampling circuit and is connected to the control circuit 11, the resistor R3 is connected with the cathodes of the diodes D1 and D2 respectively, the anode of the diode D1 is connected with an L line, and the anode of the diode D2 is connected with an N line.
The heating system capable of being cascaded is provided with a main power control switch 12 for controlling the on/off of the power supply of the whole heating system, wherein the main power control switch 12 is connected with an L line and is in a conducting state after the system is electrified; a power acquisition circuit is arranged on a main circuit of the main heating unit 1 to acquire real-time current Senor _ Iout, a voltage sampling circuit connected with a power supply input end of the main heating unit 1 is arranged in the main heating unit 1 and used for acquiring power supply voltage Senor _ Uout of a current power supply and converting a real-time power value according to the real-time current Senor _ Iout and the real-time voltage Senor _ Uout; and comparing the real-time power value with a preset upper limit power value, and switching off the power supply of the whole heating system through the main power control switch 12 when the real-time power value is greater than the upper limit power value. The heating circuit is provided with an auxiliary power control switch 5 which is automatically controlled to be switched on/off by the rated parameter or is controlled to be switched on/off, and when the real-time electric parameter value of the auxiliary power control switch 5 is larger than the rated parameter or the real-time electric parameter value is detected to be larger than the preset value, the heating circuit is switched off by the auxiliary power control switch 5; for example, if the secondary power control switch 5 is an overcurrent relay switch, the secondary power control switch 5 will automatically cut off the circuit of the electric heating element 4 when the real-time current flowing through the electric heating element 4 exceeds the rated current. As another example, the secondary power control switch 5 is a transistor switch, and then it is turned on or off by a driving chip or a sampling circuit disposed in the auxiliary heating unit 2.
The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.
Claims (6)
1. A cascadable heating system, comprising: the heating device comprises a main heating unit and a plurality of auxiliary heating units which can be electrically spliced with the main heating unit and can be electrically spliced with each other, wherein heating circuits and a plurality of connecting terminals which enable the heating circuits to form electrical parallel connection are respectively arranged on the main heating unit and the auxiliary heating units; the main heating unit is also provided with a control circuit, a main power control switch and a power acquisition circuit, the main power control switch is controlled by the control circuit to realize the on/off of the power supply of the whole heating system, the power acquisition circuit is connected with the heating circuit to realize the acquisition of real-time power, and the sampling value is output to the control circuit.
2. The cascadable heating system of claim 1, wherein: the heating circuit comprises a secondary power control switch for controlling the on/off of the heating circuit.
3. The cascadable heating system of claim 2, wherein: the auxiliary power control switch is automatically controlled to be switched on/off according to rated parameters or is controlled to be switched on/off.
4. The cascadable heating system of claim 1, wherein: the power acquisition circuit comprises a sampling resistor RS, the sampling resistor RS is arranged on a trunk line connected with the heating circuit, and sampling values are output to the control circuit by adopting an isolation type or non-isolation type circuit at two ends of the sampling resistor RS.
5. The cascadable heating system of any one of claims 1 to 4, wherein: the main heating unit is provided with a voltage sampling circuit for detecting an input voltage value, and the control circuit controls the on/off of the main power control switch according to a sampling value of the power acquisition circuit and a sampling value of the voltage sampling circuit.
6. The cascadable heating system of claim 5, wherein: the voltage sampling circuit comprises diodes D1 and D2, resistors R3 and R4 and a capacitor C2; the resistors R3 and R4 are grounded after being connected in series, the two ends of the resistor R4 are connected in parallel with the capacitor C2, the connection point of the resistors R3 and R4 serves as the output end of the voltage sampling circuit and is connected to the control circuit, the resistor R3 is connected with the cathodes of the diodes D1 and D2 respectively, and the anodes of the diodes D1 and D2 are connected with the power input end respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920758230.2U CN210491222U (en) | 2019-05-24 | 2019-05-24 | Heating system capable of being cascaded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920758230.2U CN210491222U (en) | 2019-05-24 | 2019-05-24 | Heating system capable of being cascaded |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210491222U true CN210491222U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920758230.2U Expired - Fee Related CN210491222U (en) | 2019-05-24 | 2019-05-24 | Heating system capable of being cascaded |
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| Country | Link |
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| CN (1) | CN210491222U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110167209A (en) * | 2019-05-24 | 2019-08-23 | 中山市雅乐思电器实业有限公司 | It is a kind of can cascade heating system and the system function detecting method |
-
2019
- 2019-05-24 CN CN201920758230.2U patent/CN210491222U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110167209A (en) * | 2019-05-24 | 2019-08-23 | 中山市雅乐思电器实业有限公司 | It is a kind of can cascade heating system and the system function detecting method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |