Energy-saving dual-mode water heater

Abstract

The utility model discloses a kind of energy-saving dual-mode water heaters, including ordinary commercial power 220V voltage heating heating wire circuit, photovoltaic voltage heating heating circuit, dual-mode conversion circuit, the ordinary commercial power 220V voltage heating heating wire provides hot water, and photovoltaic heating is through the use of photovoltaic voltage heating heating ratio to provide hot water, dual-mode conversion circuit realizes the conversion of two modes of photovoltaic heating and commercial power heating, when photovoltaic voltage reaches certain value, automatically switch to photovoltaic heating, without commercial power heating, when photovoltaic voltage is lower than certain value, again switch back to commercial power heating, the utility model saves energy consumption, reduces electricity bill, ensures hot water source unceasingly, and user uses experience is good.

Description

Technical Field

[0001] This utility model relates to the field of electronic application technology, and in particular to an energy-saving dual-mode water heater. Background Technology

[0002] Ordinary mains heating uses 220V mains voltage to heat the heating element, but mains heating alone consumes a lot of energy. Photovoltaic heating uses photovoltaic panels to convert solar energy into electricity to generate electricity. Using photovoltaic voltage for heating is more energy-efficient than providing hot water. Therefore, this application aims to realize the switching between photovoltaic heating and mains heating modes. When the photovoltaic voltage reaches a certain value, it automatically switches to photovoltaic heating and does not use mains heating. When the photovoltaic voltage falls below a certain value, it switches back to mains heating, saving energy while ensuring a continuous supply of hot water. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an energy-saving dual-mode water heater that can prevent the high energy consumption of single mains power heating, and ensure a continuous supply of hot water while saving energy, thus overcoming the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: An energy-saving dual-mode water heater includes a 220V AC mains voltage heating wire circuit, a photovoltaic voltage heating circuit, and a dual-mode conversion circuit. The 220V AC mains voltage heating wire circuit consists of resistors R5 and R6, a transistor Q1, a diode D6, a relay RLY1, and a coil. Diode D5 and the coil are connected to the positive terminal of the power supply. The other end of diode D6 and the coil are connected to the collector of transistor Q1. Relay RLY1 is connected to both the input and output. The base of transistor Q1 is connected to resistors R5 and R6. The emitter of transistor Q1 and the other end of resistor R6 are grounded. The photovoltaic voltage heating circuit consists of a main control chip CN2, a MOSFET Q2, and resistors R10 and R11. The second pin of the main control chip CN2 is connected to the positive terminal of a 60V power supply, and the first pin of the main control chip CN2 is connected to the drain of the MOSFET Q2. The gate of the MOSFET Q2 is connected to resistors R10 and R11, and the source of the MOSFET Q2 and the other end of resistor R11 are grounded. The photovoltaic voltage heating circuit converts solar energy into electrical energy through a photovoltaic panel to generate electricity and directly heat the device. The dual-mode conversion circuit consists of diode D7, resistors R7, R8 and R9, and electrolytic capacitor EC3. The photovoltaic panel output voltage interface is connected to the positive terminal of a 60V power supply. Diode D7 is also connected to the positive terminal of the 60V power supply. The other end of diode D7 is connected to electrolytic capacitor EC3, resistors R8 and R9 via two resistors R7. The other end of electrolytic capacitor EC3 and resistor R9 is grounded. The other end of resistor R8 is connected to the detection port TC1. The microcontroller MCU is used to detect the current photovoltaic voltage value. When the photovoltaic voltage is greater than or equal to U1, a photovoltaic heating command is output. When the photovoltaic voltage is lower than U1, the circuit switches back to mains heating, thus realizing the conversion between photovoltaic heating and mains heating modes.

[0005] The transistor Q1 is an 8050 NPN transistor; the MOSFET Q2 is a 40N15 N-channel MOSFET; and the diodes D7 and D6 are 1N4007 rectifier diodes.

[0006] The above technical solution has the following beneficial effects: This invention enables the water heater to switch between photovoltaic heating and mains heating modes, resulting in advantages such as energy saving, reduced electricity costs, a continuous supply of hot water, and a better user experience. Attached Figure Description

[0007] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0008] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0009] Figure 1 This is a circuit diagram of a standard mains electric heating circuit for this utility model; Figure 2 This is a circuit diagram of the photovoltaic heating circuit of this utility model; Figure 3 This is the circuit diagram of the energy-saving dual-mode heating of this utility model; Detailed Implementation The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0010] See Figures 1-3 As shown, this utility model discloses an energy-saving dual-mode water heater, including a heating element circuit for ordinary 220V AC mains voltage heating, a photovoltaic voltage heating circuit, and a dual-mode conversion circuit. The ordinary 220V AC mains voltage heating element circuit consists of resistors R5 and R6, transistor Q1, diode D6, relay RLY1, and a coil. Diode D5 and the coil are connected to the positive terminal of the power supply. The other end of diode D6 and the coil are connected to the collector of transistor Q1. Relay RLY1 is connected to both the input and output. The base of transistor Q1 is connected to resistors R5 and R6. The emitter of transistor Q1 and the other end of resistor R6 are grounded. When connected to ordinary 220V AC mains voltage, relay RLY1 is activated, using a traditional resistance heating method to heat the heating element and provide hot water.

[0011] The photovoltaic voltage heating circuit consists of a main control chip CN2, a MOSFET Q2, and resistors R10 and R11. The second pin of the main control chip CN2 is connected to the positive terminal of a 60V power supply, and the first pin of the main control chip CN2 is connected to the drain of the MOSFET Q2. The gate of the MOSFET Q2 is connected to resistors R10 and R11, and the source of the MOSFET Q2 and the other end of resistor R11 are grounded. The photovoltaic voltage heating circuit converts solar energy into electrical energy through a photovoltaic panel to generate electricity and directly heat the device.

[0012] The dual-mode conversion circuit consists of diode D7, resistors R7, R8 and R9, and electrolytic capacitor EC3. The photovoltaic panel output voltage interface is connected to the positive terminal of a 60V power supply. Diode D7 is also connected to the positive terminal of the 60V power supply. The other end of diode D7 is connected to electrolytic capacitor EC3, resistors R8 and R9 via two resistors R7. The other end of electrolytic capacitor EC3 and resistor R9 is grounded. The other end of resistor R8 is connected to the detection port TC1. The microcontroller MCU can detect the current photovoltaic voltage value. When the photovoltaic voltage reaches a certain value, it automatically switches to photovoltaic heating instead of mains heating. When the photovoltaic voltage is lower than a certain value, it switches back to mains heating, realizing the conversion between photovoltaic heating and mains heating modes.

[0013] The transistor Q1 is an 8050 NPN transistor; the MOSFET Q2 is a 40N15 N-channel MOSFET; and the diodes D7 and D6 are 1N4007 rectifier diodes. Figure 3In the middle, the +60V input side is the photovoltaic panel output voltage interface, and the detection port TC1 side is where the MCU detects the current photovoltaic voltage value. When the photovoltaic voltage reaches a certain value, it automatically switches to photovoltaic heating, eliminating the need for mains heating and saving more energy. When the photovoltaic voltage drops below a certain value, it switches back to mains heating to ensure a continuous supply of hot water.

[0014] As a manifestation of the function of this utility model, the specific working process of this energy-saving dual-mode water heater is described in detail below: It uses ordinary mains electricity for heating. When connected to ordinary mains electricity (220V), relay RLY1 is turned on. It adopts traditional resistance heating method, with heating wire providing hot water. It operates when the photovoltaic voltage is below a certain value. Photovoltaic heating converts solar energy into electricity through photovoltaic panels. It generates electricity by using photovoltaic voltage to heat the water, which is more energy-efficient than providing hot water. It operates when the photovoltaic voltage reaches a certain value.

[0015] An energy-saving dual-mode water heater enables switching between photovoltaic heating and mains heating modes. When the photovoltaic voltage reaches a certain value, it automatically switches to photovoltaic heating, eliminating the need for mains heating and thus saving energy. When the photovoltaic voltage drops below a certain value, it switches back to mains heating to ensure a continuous supply of hot water.

[0016] All components involved in this utility model can be general standard parts or components known to those skilled in the art. Their structure, principle and control method are known to those skilled in the art through technical manuals or conventional experimental methods.

[0017] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, other circuits obtained by using the same or similar technical features as the above embodiments of the present utility model are all within the protection scope of the present utility model.

Claims

1. A kind of energy-saving dual-mode water heater, including ordinary city power 220V voltage heating AC heating wire circuit, photovoltaic voltage heating DC heating wire circuit, dual-mode conversion circuit, characterized in that: The control circuit for heating AC heating wire under ordinary 220V AC mains power consists of resistors R5 and R6, transistor Q1, diode D6, relay RLY1, and coil. Diode D6 and coil are connected to the positive terminal of the power supply, and the other end of diode D6 and coil are connected to the collector of transistor Q1. Relay RLY1 is connected to the input and output. The base of transistor Q1 is connected to resistors R5 and R6, and the emitter of transistor Q1 and the other end of resistor R6 are grounded. The photovoltaic voltage heating DC heating wire circuit consists of a main control chip CN2, a MOSFET, resistors R10 and R11. The second pin of the main control chip CN2 is connected to the positive terminal of a 60V power supply, and the first pin of the main control chip CN2 is connected to the drain of the MOSFET. The gate of the MOSFET is connected to resistors R10 and R11, and the source of the MOSFET and the other end of resistor R11 are grounded. The photovoltaic voltage converts solar energy into electrical energy through the photovoltaic panel to provide direct heating. The dual-mode conversion circuit consists of diode D7, resistors R7, R8, and R9, and electrolytic capacitor EC3. The photovoltaic panel output voltage interface is connected to the positive terminal of a 60V power supply. Diode D7 is also connected to the positive terminal of the 60V power supply. The other end of diode D7 is connected to electrolytic capacitor EC3, resistors R8 and R9 via two resistors R7. The other ends of electrolytic capacitor EC3 and resistor R9 are grounded. The other end of resistor R8 is connected to the detection port TC1. The microcontroller MCU is used to detect the current photovoltaic voltage value. When the microcontroller MCU detects that the photovoltaic voltage is greater than or equal to U1, the mains heating is disconnected, and the photovoltaic drive circuit outputs a photovoltaic heating command. Conversely, when the MCU detects that the photovoltaic voltage is lower than U1, the photovoltaic heating is disconnected, and the mains drive circuit controls the mains heating. This achieves the conversion between photovoltaic heating and mains heating modes, reducing the use of mains heating and achieving energy saving.

2. The energy efficient dual mode water heater of claim 1, wherein: The transistor used is an 8050 NPN transistor.

3. The energy efficient dual mode water heater of claim 1, wherein: The MOSFET used is an N-channel MOSFET of model 40N15.

4. The energy efficient dual mode water heater of claim 1, wherein: The diodes (D7) and (D6) are rectifier diodes of type 1N4007.

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