Rectifier protection circuit for a purification device

Abstract

The utility model discloses a rectifier protection circuit of purifier, rectifier protection circuit of purifier includes two times voltage rectifier circuit, high voltage output end and ground terminal, high voltage output end with high voltage electrode electric connection of purifier, ground terminal with ground electrode electric connection of purifier, wherein, resistance one series to between the first output of two times voltage rectifier circuit with high voltage output end, resistance two series to between the second output of two times voltage rectifier circuit with ground terminal.

Description

Technical Field

[0001] This utility model relates to the field of load circuit technology, specifically to a rectifier protection circuit for a purification device. Background Technology

[0002] Gas purification devices pose certain risks due to their connection to high voltage. Furthermore, the stability of the circuit is also fundamental to ensuring long-term gas purification. Utility Model Content

[0003] The purpose of this invention is to provide a rectifier protection circuit for a purification device to solve the problems existing in the prior art.

[0004] To solve the above problems, according to a first aspect of the present invention, a rectifier protection circuit for a purification device is provided. The rectifier protection circuit for the purification device includes a first output terminal, a second output terminal, a high-voltage output terminal, and a ground terminal. The high-voltage output terminal is electrically connected to the high-voltage electrode of the purification device, and the ground terminal is electrically connected to the ground electrode of the purification device. A resistor is connected in series between the first output terminal and the high-voltage output terminal, and a resistor is connected in series between the second output terminal and the ground terminal.

[0005] Optionally, a resistor is connected in parallel between the first output terminal and the second output terminal.

[0006] Optionally, the rectifier protection circuit of the purification device further includes a voltage doubler rectifier circuit, which includes a first output terminal and a second output terminal.

[0007] Optionally, the voltage doubler rectifier circuit includes capacitor one, capacitor two, diode one, and diode two, wherein...

[0008] The first terminal of the capacitor is configured to be connected to one end of the secondary winding of the transformer, and the second output terminal of the voltage doubler rectifier circuit is configured to be connected to the other end of the secondary winding of the transformer.

[0009] The positive terminal of diode one is connected to the second terminal of capacitor one, and the negative terminal of diode one is connected to the second output terminal of the voltage doubler rectifier circuit;

[0010] The positive terminal of diode two is connected to the first output terminal of the voltage doubler rectifier circuit, and the negative terminal of diode two is connected to the positive terminal of diode one.

[0011] The first terminal of capacitor two is connected to the negative terminal of diode one, and the second terminal of capacitor two is connected to the positive terminal of diode two.

[0012] Optionally, the rectifier protection circuit further includes a transformer and a boost circuit, with the positive terminal of the DC input connected to the positive input of the boost circuit and the negative terminal of the DC input connected to the negative input of the boost circuit, and the output of the boost circuit connected to both ends of the primary winding of the transformer.

[0013] Optionally, the resistance of resistor one and resistor two is 10 megohms or more.

[0014] Optionally, the resistance of resistor three is 100 megohms or more.

[0015] The beneficial effects of this invention are as follows: this circuit can prevent electric shock when the human body comes into contact with the metal casing; this circuit can also ensure that the fluctuation range of the output high voltage under no-load and normal operation is negligible, thus ensuring the stability of the circuit when the purification device is running for a long time. Attached Figure Description

[0016] Figure 1 This is a rectifier protection circuit for a purification device according to one embodiment of the present invention;

[0017] Figure 2 This is a rectifier protection circuit for a purification device according to another embodiment of the present invention. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0019] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, components, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0020] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, component, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, component, or characteristic may be combined in any manner in one or more embodiments.

[0021] In the following description, in order to clearly demonstrate the components and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outer", "inner", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0022] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the component must be completely horizontal, but can be slightly tilted.

[0023] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] One embodiment of this utility model provides a rectifier protection circuit for a purification device, referencing... Figure 1 The rectifier protection circuit of the purification device includes a voltage doubler rectifier circuit, a high-voltage output terminal, and a ground terminal. The high-voltage output terminal is electrically connected to the high-voltage electrode of the purification device, and the ground terminal is electrically connected to the ground electrode of the purification device. Resistor R1 is connected in series between the first output terminal and the high-voltage output terminal of the voltage doubler rectifier circuit, and resistor R2 is connected in series between the second output terminal and the ground terminal of the voltage doubler rectifier circuit. Preferably, the resistance of both resistors R1 and R2 is 10 megohms or higher. Resistors R1 and R2 are electrically connected to the high-voltage electrode and the ground electrode of the purification device, respectively. Because their resistance is much greater than the resistance of the human body, they can prevent electric shock when the human body comes into contact with the metal casing.

[0025] In one embodiment of this utility model, reference is made to Figure 1 A resistor R3 is connected in parallel between the first output terminal and the second output terminal of the voltage doubler rectifier circuit. Preferably, the resistance of resistor R3 is 100 megohms or higher. R3 forms a dummy load, which can ensure that the fluctuation of the output high voltage under no-load and normal operation is negligible, thus ensuring the stability of the circuit during long-term operation of the purification device. Additionally, refer to... Figure 2 In other embodiments, R3 can be formed by three resistors R31, R32, and R33 connected in series, with a resistance of 100 megohms or more, which can also achieve this purpose. In other embodiments, R3 can be formed by N resistors connected in series.

[0026] In one embodiment of this utility model, reference is made to Figure 1 and Figure 2 The voltage doubler rectifier circuit includes capacitor C1, capacitor C2, diode D1, and diode D2. The first terminal of capacitor C1 is connected to one end of the secondary winding of transformer T1. The anode of diode D1 is connected to the second terminal of capacitor C1, and the cathode of diode D1 is connected to the second output terminal of the voltage doubler rectifier circuit. The anode of diode D2 is connected to the first output terminal of the voltage doubler rectifier circuit, and the cathode of diode D2 is connected to the anode of diode D1. The first terminal of capacitor C2 is connected to the cathode of diode D1, and the second terminal of capacitor C2 is connected to the anode of diode D2. The other end of the secondary winding of transformer T1 is connected to the second output terminal of the voltage doubler rectifier circuit.

[0027] In one embodiment of this utility model, reference is made to Figure 1 and Figure 2 The input terminal of the voltage doubler rectifier circuit is connected to the output terminal of the boost circuit.

[0028] In one embodiment of this utility model, the rectifier protection circuit further includes a transformer and a boost circuit. The positive terminal of the DC input (DCin) is connected to the positive input of the boost circuit, and the negative terminal of the DC input (DCin) is connected to ground and then connected to the negative input of the boost circuit. The output of the boost circuit is connected to both ends of the primary winding of the transformer T1.

[0029] The preferred embodiments of this utility model have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to this utility model. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A rectifier protection circuit for a decontamination apparatus, characterized by, The rectification protection circuit of the purification device comprises a first output end, a second output end, a high-voltage output end and a ground end, the high-voltage output end is electrically connected with a high-voltage electrode of the purification device, the ground end is electrically connected with a ground electrode of the purification device, wherein a resistor one is connected in series between the first output end and the high-voltage output end, and a resistor two is connected in series between the second output end and the ground end.

2. The rectifier protection circuit of claim 1, wherein, A resistor three is connected in parallel between the first output end and the second output end.

3. The rectifier protection circuit of claim 1, wherein, The rectification protection circuit of the purification device further comprises a double-voltage rectification circuit, and the double-voltage rectification circuit comprises the first output end and the second output end.

4. The rectifier protection circuit of claim 3, wherein, The double-voltage rectification circuit comprises a capacitor one, a capacitor two, a diode one and a diode two, wherein a first end of the capacitor one is configured to be connected with one end of a secondary winding of a transformer, and a second end of the capacitor one is configured to be connected with the other end of the secondary winding of the transformer, a positive electrode of the diode one is connected to the second end of the capacitor one, and a negative electrode of the diode one is connected to the second output end of the double-voltage rectification circuit; a positive electrode of the diode two is connected to the first output end of the double-voltage rectification circuit, and a negative electrode of the diode two is connected to the positive electrode of the diode one; a first end of the capacitor two is connected to the negative electrode of the diode one, and a second end of the capacitor two is connected to the positive electrode of the diode two.

5. The rectification protection circuit of claim 1, wherein, The rectification protection circuit further comprises a transformer and a boost circuit, a positive electrode end of a direct current input is connected with a positive electrode input of the boost circuit, a negative electrode end of the direct current input is connected with a negative electrode input of the boost circuit, and both ends of a primary winding of the transformer are connected with an output of the boost circuit.

6. The rectification protection circuit of claim 1, wherein, The resistances of the resistor one and the resistor two are greater than 10 megaohms.

7. The rectifier protection circuit of claim 2, wherein The resistance of the resistor three is greater than 100 megaohms.

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