Double-voltage heating control circuit and steam generator with double electric heating structures

Abstract

The utility model discloses a double voltage heating control circuit and a steam generator with a double electric heating structure, a regulating switch is arranged between a first end of a first electric heating unit and a first end of a second electric heating unit, and a control electrode of the regulating switch is electrically connected with a main control unit. The second end of the first electric heating unit is electrically connected with the second end of the second electric heating unit, the first end of the first electric heating unit is electrically connected with the first end of the power supply device, and the second end of the first electric heating unit is electrically connected with the second end of the power supply device. Voltage information at the two ends of the power supply device is collected through the voltage collection unit, the main control unit controls the on-off state of the adjusting switch according to the voltage information, switching of different branches is achieved, the use requirements of different power supply voltages can be met, and meanwhile the safety risk is reduced; the output power of the steam generator can be increased.

Description

Technical Field

[0001] This utility model relates to the field of steam heating technology, specifically to a dual-voltage heating control circuit and a steam generator with a dual-electric heating structure. Background Technology

[0002] The steam generator contains a steam chamber. A water pump delivers room-temperature water from a storage container into the steam chamber, where an electric heating unit heats the water, causing it to vaporize and be released as steam from the steam chamber's outlet. For applications requiring portable steam equipment, the steam generator must be small enough. Therefore, it typically only contains one electric heating unit, limiting its heating power and limiting its power supply voltage. Furthermore, the power supply voltage in some countries and regions differs from that in my country. With the rapid development of portable smart homes, the market demand for high-power steam generators capable of operating under different power supply voltages is increasing.

[0003] This utility model provides a dual-voltage heating control circuit and a steam generator with a dual electrothermal structure, aiming to solve at least one of the above-mentioned technical problems. Utility Model Content

[0004] Based on the above analysis, this utility model proposes a dual-voltage heating control circuit and a steam generator with a dual electrothermal structure to overcome the shortcomings of the prior art.

[0005] This utility model is mainly achieved through the following technical solutions:

[0006] A dual-voltage heating control circuit includes a main control unit, a voltage sampling unit, a branch adjustment unit, a first heating unit, and a second heating unit; the main control unit is electrically connected to a power supply device, the voltage sampling unit is disposed at both ends of the power supply device and electrically connected to the main control unit, and the branch adjustment unit includes an adjustment switch;

[0007] The regulating switch is disposed between the first end of the first heating unit and the first end of the second heating unit. The control electrode of the regulating switch is electrically connected to the main control unit. The second end of the first heating unit is electrically connected to the second end of the second heating unit. The first end of the first heating unit is electrically connected to the first end of the power supply device. The second end of the first heating unit is electrically connected to the second end of the power supply device.

[0008] When the voltage sampling unit detects that the power supply device is at the first power supply voltage, the main control unit controls the adjustment switch to open, and the first heating unit works independently.

[0009] When the voltage sampling unit detects that the power supply device is at the second power supply voltage, the main control unit controls the regulating switch to close, and the first heating unit and the second heating unit are connected in parallel.

[0010] The first supply voltage is different from the second supply voltage.

[0011] Furthermore, the dual-voltage heating control circuit also includes a temperature controller, which is located between the second end of the power supply device and the second end of the first heating unit, and is electrically connected to the main control unit.

[0012] Furthermore, the dual-voltage heating control circuit also includes a first fuse, which is located between the first end of the first heating unit and the first end of the regulating switch.

[0013] Furthermore, the dual-voltage heating control circuit also includes a second fuse, which is located between the first end of the second heating unit and the second end of the regulating switch.

[0014] Furthermore, the dual-voltage heating control circuit also includes a water pump, which is located between the first end of the power supply device and the main control unit.

[0015] Furthermore, the dual-voltage heating control circuit also includes a water pump switch electrically connected to the main control unit.

[0016] Furthermore, the dual-voltage heating control circuit also includes a power switch electrically connected to the main control unit.

[0017] Furthermore, the first power supply voltage is greater than the second power supply voltage, and the rated voltage of the first heating unit is greater than the rated voltage of the second heating unit.

[0018] Furthermore, the main control unit, voltage sampling unit, and branch adjustment unit are integrated into one unit.

[0019] This utility model also provides a steam generator with a dual electric heating structure, which includes a main body and the aforementioned dual-voltage heating control circuit.

[0020] Compared with the prior art, the wide voltage heating control circuit and heating element device provided by this utility model have the following advantages:

[0021] The voltage acquisition unit collects voltage information from both ends of the power supply device. The main control unit controls the on / off state of the regulating switch based on this voltage information, enabling switching between different branches. It has good adaptability to different voltage environments and can meet the usage requirements of different power supply voltages, thus expanding the application range of the steam generator. At the same time, it eliminates the need for manual switching, reducing safety risks. Compared with setting up an electric heating unit, it can increase the output power of the steam generator. The structure is simple, improving the economy and usability of the device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the dual-voltage heating control circuit provided in this embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of a steam generator with a dual electric heating structure provided in this embodiment of the utility model;

[0025] Figure 3 This is a cross-sectional view of a steam generator with a dual electric heating structure provided in an embodiment of this utility model.

[0026] The attached figures are labeled as follows:

[0027] 1. Main control unit; 2. Indicator unit; 3. Branch circuit adjustment unit; 4. First electric heating unit; 5. Second electric heating unit; 6. Power supply device; 7. Thermostat; 8. First fuse; 9. Second fuse; 10. Water pump; 11. Water pump switch; 12. Power switch; 20. Main body; 20a. Steam chamber; 20b. Water inlet; 20c. Exhaust port; 20d. Through hole; 201. Cover plate; 202. Partition plate; 203. Base plate. Detailed Implementation

[0028] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model, and the specific and direct descriptions of related structures are merely for the convenience of understanding the present utility model; the specific features do not necessarily or directly limit the scope of implementation of the present utility model. Conventional choices and substitutions made by those skilled in the art under the guidance of the present utility model should all be considered within the scope of protection claimed by this utility model.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figure 1 As shown, this utility model provides a dual-voltage heating control circuit, including a main control unit 1, a voltage sampling unit, a branch adjustment unit 3, a first heating unit 4, and a second heating unit 5. The main control unit 1 is electrically connected to a power supply device 6. The voltage sampling unit is located at both ends of the power supply device 6 and is electrically connected to the main control unit 1. The branch adjustment unit 3 includes an adjustment switch, specifically a relay K1. The main control unit 1, the voltage sampling unit, and the branch adjustment unit 3 are integrated into one unit. The voltage sampling unit uses a conventional sampling circuit.

[0032] An adjustment switch is located between the first end of the first heating unit 4 and the first end of the second heating unit 5. The control electrode of the adjustment switch is electrically connected to the main control unit 1. The second end of the first heating unit 4 is electrically connected to the second end of the second heating unit 5. The first end of the first heating unit 4 is electrically connected to the first end of the power supply device 6. The second end of the first heating unit 4 is electrically connected to the second end of the power supply device 6.

[0033] When the voltage sampling unit detects that the power supply device 6 is operating at the first supply voltage, the main control unit 1 controls the regulating switch to open, and the first heating unit 4 operates independently. When the voltage sampling unit detects that the power supply device 6 is operating at the second supply voltage, the main control unit 1 controls the regulating switch to close, and the first heating unit 4 and the second heating unit 5 are connected in parallel. The first and second supply voltages are different; specifically, the first supply voltage is greater than the second supply voltage. The rated voltage, rated power, and maximum output current of each heating unit can be set according to actual needs, ensuring that each heating unit can operate normally for an extended period under normal power-on conditions.

[0034] In one embodiment, for example, the rated voltage of the first heating unit 4 is greater than the rated voltage of the second heating unit 5. The first heating unit 4 is set to 230V 1000W, and the second heating unit 5 is set to 120V 750W. When the control unit 1 determines that the power supply device 6 is at the first power supply voltage, i.e., 220V-240V, the relay K1 is disconnected, the first heating unit 4 is in the working state, and the second heating unit 5 is in the non-working state, with an output power of 1000W. When the control unit 1 determines that the power supply device 6 is at the second power supply voltage, i.e., 120V, the relay K1 is closed, the first heating unit 4 and the second heating unit 5 are connected in parallel, and the output power is greater than 750W.

[0035] Preferably, the dual-voltage heating control circuit further includes a thermostat 7, which is located between the second terminal of the power supply device 6 and the second terminal of the first heating unit 4, and is electrically connected to the main control unit 1. The dual-voltage heating control circuit also includes a first fuse 8, located between the first terminal of the first heating unit 4 and the first terminal of the regulating switch. The dual-voltage heating control circuit also includes a second fuse 9, located between the first terminal of the second heating unit 5 and the second terminal of the regulating switch. The first fuse 8 and the second fuse 9 are fuses that disconnect the circuit when the current in the circuit is too high to prevent the electrical appliances from burning out, thus protecting the first heating unit 4 and the second heating unit 5 respectively.

[0036] Preferably, the dual-voltage heating control circuit further includes a water pump 10, which is located between the first end of the power supply device 6 and the main control unit 1. The dual-voltage heating control circuit also includes a water pump switch 11 electrically connected to the main control unit 1.

[0037] Preferably, the dual-voltage heating control circuit further includes a power switch 12 electrically connected to the main control unit 1. The dual-voltage heating control circuit also includes an indicator unit 2 for indicating the power status or heating status, and the indicator unit 2 is electrically connected to the control unit 1.

[0038] like Figure 2-3 As shown, this utility model also provides a steam generator with a dual electric heating structure, which includes a main body 20 and the aforementioned dual voltage heating control circuit.

[0039] Preferably, the main body 20 has two interconnected and vertically arranged steam chambers 20a. The first electric heating unit 4 and the second electric heating unit 5 are respectively located in the corresponding steam chambers 20a. One of the steam chambers 20a has two mutually separated flow channels, and the steam chamber 20a has a water inlet 20b and an exhaust outlet 20c. One flow channel is connected to the water inlet 20b and the upper steam chamber 20a, and the other flow channel is connected to the lower steam chamber 20a and the exhaust outlet 20c. The first electric heating unit 4 and the second electric heating unit 5 are electric heating tubes cast onto the main body 20.

[0040] By arranging the positions of the two electric heating units and setting up the upper steam chamber, the thermal energy can be fully utilized. At the same time, the compact design makes the equipment more convenient and flexible, and improves the problem that the output power cannot be increased due to the small size.

[0041] In this embodiment, the main body 20 includes a cover plate 201, a partition plate 202 and a bottom plate 203 arranged and connected from top to bottom. The upper steam chamber 20a is disposed between the cover plate 201 and the partition plate 202, and the lower steam chamber 20a is disposed between the bottom plate 203 and the partition plate 202. The thermostat 7, the first fuse 8, and the second fuse 9 are mounted on the base plate 203 of the main body 20. The first electric heating unit 4 is mounted on the partition plate 202, and the second electric heating unit 5 is mounted on the base plate 203. The water inlet 20b is located on the cover plate 201, and the exhaust port 20c is located at one end of the partition plate 202. The partition plate 202 is provided with two through holes 20d for fluid to flow between the two steam chambers 20a. One through hole 20d is located at the end of the partition plate 202 near the exhaust port 20c, and the other through hole 20d is located at the end of the partition plate 202 away from the exhaust port 20c. Each flow channel is provided with one through hole 20d.

[0042] In use, the main body 20 is first heated by the electric heating unit. After heating is completed, the water pump switch 11 is turned on to pump water into the main body 20. When the temperature of the main body 20 has not reached the set temperature, the electric heating unit continues to heat the main body 20. When the temperature of the main body 20 reaches the set temperature, the current temperature is maintained and heating is stopped.

[0043] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A dual-voltage heating control circuit, characterized in that: It includes a main control unit (1), a voltage sampling unit, a branch adjustment unit (3), a first electric heating unit (4), and a second electric heating unit (5); the main control unit (1) is electrically connected to the power supply device (6), the voltage sampling unit is located at both ends of the power supply device (6) and is electrically connected to the main control unit (1), and the branch adjustment unit (3) includes an adjustment switch; The regulating switch is located between the first end of the first heating unit (4) and the first end of the second heating unit (5). The control electrode of the regulating switch is electrically connected to the main control unit (1). The second end of the first heating unit (4) is electrically connected to the second end of the second heating unit (5). The first end of the first heating unit (4) is electrically connected to the first end of the power supply device (6). The second end of the first heating unit (4) is electrically connected to the second end of the power supply device (6). When the voltage sampling unit detects that the power supply device (6) is at the first power supply voltage, the main control unit (1) controls the adjustment switch to open, and the first electric heating unit (4) works independently. When the voltage sampling unit detects that the power supply device (6) is the second power supply voltage, the main control unit (1) controls the adjustment switch to close, and the first heating unit (4) and the second heating unit (5) are connected in parallel. The first supply voltage is different from the second supply voltage.

2. The dual-voltage heating control circuit as described in claim 1, characterized in that: The dual-voltage heating control circuit also includes a temperature controller (7), which is located between the second end of the power supply device (6) and the second end of the first electric heating unit (4), and is electrically connected to the main control unit (1).

3. The dual-voltage heating control circuit as described in claim 1, characterized in that: The dual-voltage heating control circuit also includes a first fuse (8), which is located between the first end of the first heating unit (4) and the first end of the regulating switch.

4. The dual-voltage heating control circuit as described in claim 1, characterized in that: The dual-voltage heating control circuit also includes a second fuse (9), which is located between the first end of the second heating unit (5) and the second end of the regulating switch.

5. The dual-voltage heating control circuit as described in any one of claims 1-4, characterized in that: The dual-voltage heating control circuit also includes a water pump (10), which is located between the first end of the power supply device (6) and the main control unit (1).

6. The dual-voltage heating control circuit as described in claim 5, characterized in that: The dual-voltage heating control circuit also includes a water pump switch (11) electrically connected to the main control unit (1).

7. The dual-voltage heating control circuit as described in claim 1, characterized in that: The dual-voltage heating control circuit also includes a power switch (12) electrically connected to the main control unit (1).

8. The dual-voltage heating control circuit as described in claim 1, characterized in that: The first power supply voltage is greater than the second power supply voltage, and the rated voltage of the first heating unit (4) is greater than the rated voltage of the second heating unit (5).

9. The dual-voltage heating control circuit as described in claim 1, characterized in that: The main control unit (1), voltage sampling unit, and branch adjustment unit (3) are integrated into one unit.

10. A steam generator with a dual electric heating structure, characterized in that: It includes a main body (20) and a dual-voltage heating control circuit as described in any one of claims 1-9.

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