Electric heating controller

Abstract

The utility model relates to the technical field of electric heating controllers, in particular to an electric heating controller which comprises a main switch QF0, a heating area and a circulation area. The heating control area comprises a plurality of secondary switches QF1 to QF15, the output ends of the plurality of secondary switches QF1 to QF15 are respectively coupled with contactors KM1 to KM15, and the contactors KM1 to KM15 are respectively coupled with heating units RJ1; the circulating control area comprises a plurality of secondary switches W1 to W15, the output ends of the plurality of secondary switches W1 to W15 are respectively coupled with contactors T1 to T15, and the plurality of contactors T1 to T15 are respectively coupled with a circulating pump M; according to the utility model, the power of each group of heating units RJ1 is three heating pipes, the power is selectable between 6KW and 20KW, a three-phase method is adopted, so that the load of a power grid is convenient to balance, and the control is completed by independent air switches and contactors.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating controllers, in particular to an electric heating controller. Background Art

[0002] In my country's western region, due to its geographical advantages, solar energy and wind energy are relatively abundant. Various places are vigorously developing new energy and other environmentally friendly industries, converting wind energy and solar energy into electricity for local residents' daily heating in winter, reducing coal consumption.

[0003] However, when the weather is cold, the ambient temperature and local temperature cannot be controlled, and excessive activation and unreasonable use of heating devices will cause energy waste.

[0004] Therefore, we designed an electric heating controller. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides an electric heating controller to solve the technical problem in the existing technology that "in the western region of my country, due to geographical advantages, solar energy and wind energy are relatively abundant, and new energy and other environmentally friendly industries are vigorously developed in various places to convert wind energy and solar energy into electricity for daily heating use by local residents in winter."

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] An electric heating controller includes a main switch QF0, a heating area and a circulation area.

[0008] The main switch QF0 is connected to an external AC380V voltage source;

[0009] A heating control zone includes a plurality of secondary switches QF1 to QF15, wherein input terminals of the plurality of secondary switches QF1 to QF15 are coupled to a main switch QF0, and output terminals of the plurality of secondary switches QF1 to QF15 are respectively coupled to contactors KM1 to KM15, and the contactors KM1 to KM15 are respectively coupled to a heating unit RJ1;

[0010] The circulation control area includes multiple secondary switches W1 to W15. The input ends of the multiple secondary switches W1 to W15 are all coupled to the main switch QF0. The output ends of the multiple secondary switches W1 to W15 are respectively coupled to contactors T1 to T15. The multiple contactors T1 to T15 are respectively coupled to the circulation pump M. The multiple secondary switches W1 to W15 are commonly coupled to the isolation transformer.

[0011] As a preferred technical solution of the present invention, the output voltage of the secondary output terminals B1 and B2 of the isolation transformer is 220V.

[0012] As the preferred technical solution of the present invention, the heating unit RJ1 has a power range of 6KW-20KW and is composed of three heating tubes.

[0013] As a preferred technical solution of the present invention, each of the secondary switches is an air switch, and adjacent secondary switches are independent of each other.

[0014] As a preferred technical solution of the present invention, an ammeter G is provided at the main switch QF0 and an ammeter A is externally connected thereto. A voltmeter V is also provided between each of the three-phase lines of the main switch QF0.

[0015] The utility model provides an electric heating controller, which has the following beneficial effects:

[0016] Each heating unit RJ1 consists of three heating tubes with power options ranging from 6KW to 20KW. People can choose the appropriate heating tubes. The three-phase connection method is used to balance the grid load. The control is completed by independent circuit breakers and contactors to avoid excessive opening and unreasonable use, which will cause energy waste.

[0017] Voltmeters UAB, UBC, and UCA are also installed between the three-phase lines of the main switch QF0. The voltmeters UAB, UBC, and UCA are voltage indicators, and the network meter displays the three-phase current, power factor, active power, reactive power, etc. The touch screen displays the status light of each group of heating resistors. The system defaults to automatic mode to start or stop the heating unit.

[0018] 3. The heating terminal has a total of 21 internal relay outputs, which can control the 1#-21# three-phase AC contactors to connect to the heating pipes; the pump area provides a high-pressure pump, an external circulation pump, an internal circulation pump, and a spare expansion; the upper computer control area: RS485; local control terminals: S2 for the number of heating units, Y2 for temperature rise control, and Y3 for temperature drop control; pump emergency terminals: Y1, YS, and YEH, which can directly start the circulation pump under special circumstances. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the circuit diagram of the utility model;

[0020] Figure 2 This is a panel diagram of the present utility model;

[0021] Figure 3 This is a wiring terminal diagram of the present utility model.

[0022] In the figure: 1. Isolation transformer. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, rather than implying that every embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other, not explicitly described, combinations. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0025] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments:

[0026] refer to Figure 1 , an electric heating controller, including a main switch QF0, a heating zone and a circulation zone,

[0027] The main switch QF0 is connected to an external AC380V voltage source;

[0028] The heating control zone includes multiple secondary switches QF1 to QF15. The input ends of the multiple secondary switches QF1 to QF15 are coupled to the main switch QF0. The output ends of the multiple secondary switches QF1 to QF15 are respectively coupled to contactors KM1 to KM15. The contactors KM1 to KM15 are respectively coupled to heating units RJ1. Each group of heating units RJ1 consists of three heating tubes with a power range of 6kW-20kW. A three-phase connection method is used to facilitate grid load balancing. The heating units are controlled by independent circuit breakers and contactors.

[0029] The circulation control area includes multiple secondary switches W1 to W15, the input ends of the multiple secondary switches W1 to W15 are all coupled to the main switch QF0, the output ends of the multiple secondary switches W1 to W15 are respectively coupled to contactors T1 to T15, and the multiple contactors T1 to T15 are respectively coupled to the circulation pump M. The multiple secondary switches W1 to W15 are commonly coupled to the isolation transformer 1, and the output voltage of the secondary output ends B1 and B2 of the isolation transformer 1 is 220V. The heating unit RJ1 has a power range of 6KW-20KW and consists of three heating tubes. Each of the secondary switches is an air switch, and adjacent secondary switches are independent of each other. The main switch QF0 is provided with an ammeter G and an external ammeter A for testing the current of the three-phase line;

[0030] refer to Figure 2Voltmeters UAB, UBC, and UCA are also installed between the three-phase lines of the main switch QF0. The voltmeters UAB, UBC, and UCA are voltage indicators, and the network meter displays the three-phase current, power factor, active power, reactive power, etc. The touch screen displays the status light of each group of heating resistor wires. The system defaults to automatic state to start or stop the heating unit, and the panel terminals can also be used to quickly increase or decrease the temperature.

[0031] refer to Figure 3 , description of the controller terminals:

[0032] The heating terminal has 21 internal relay outputs, which can control 1#-21# three-phase AC contactors to connect to the heating tubes;

[0033] The pump area provides high-pressure pumps, external circulation pumps, internal circulation pumps, and spare expansion;

[0034] Host computer control area: RS485;

[0035] Local control terminal: select S2 for the number of heating units, Y2 for temperature increase control, and Y3 for temperature decrease control;

[0036] Pump emergency terminals: Y1, YS, YEH, which can directly start the circulation pump under special circumstances.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An electric heating controller, comprising a main switch QF0, a heating zone and a circulation zone, characterized in that: The main switch QF0 is connected to an external AC380V voltage source; A heating control zone includes a plurality of secondary switches QF1 to QF15, wherein input terminals of the plurality of secondary switches QF1 to QF15 are coupled to a main switch QF0, and output terminals of the plurality of secondary switches QF1 to QF15 are respectively coupled to contactors KM1 to KM15, and the contactors KM1 to KM15 are respectively coupled to a heating unit RJ1; The circulation control area includes a plurality of secondary switches W1 to W15, the input ends of the plurality of secondary switches W1 to W15 are coupled to the main switch QF0, the output ends of the plurality of secondary switches W1 to W15 are respectively coupled to contactors T1 to T15, the plurality of contactors T1 to T15 are respectively coupled to a circulation pump M, and the plurality of secondary switches W1 to W15 are commonly coupled to an isolation transformer (1).

2. An electric heating controller according to claim 1, characterized in that: The output voltage of the secondary output terminals B1 and B2 of the isolation transformer (1) is 220V.

3. The electric heating controller according to claim 1, characterized in that: The heating unit RJ1 has a power range of 6KW-20KW and is composed of three heating tubes.

4. The electric heating controller according to claim 1, characterized in that: Each of the secondary switches is an air switch, and adjacent secondary switches are independent of each other.

5. The electric heating controller according to claim 1, characterized in that: The main switch QF0 is provided with an ammeter G and is externally connected to an ammeter A. A voltmeter V is also provided between each of the three-phase lines of the main switch QF0.

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