A power safety protection device and an electric energy purifier

Abstract

The present invention discloses a novel electric energy purifier for electrical safety, which includes a transient circuit protection unit and a steady-state circuit filtering unit. The transient circuit protection unit includes at least one outer shell, on which a first wiring port and a second wiring port are provided. At least one outer shell forms a cavity through a clamping member, and a first wiring terminal, a second connection terminal, a switch assembly, a path assembly, a voltage stabilizing assembly, a trigger protection assembly, and a transient protection assembly are all installed in the cavity. Both the trigger protection assembly and the transient protection assembly can separate the switch assembly from the path assembly. When the load exceeds the preset safety range or a short circuit occurs, the trigger protection assembly separates the switch assembly from the path assembly. When the instantaneous high power is too high, the transient protection assembly separates the switch assembly from the path assembly, thereby improving the safety performance.

Description

Technical Field

[0001] The present invention relates to power protection technologies, and particularly to a power safety protection device and a power purifier. Background Art

[0002] A power purifier, also known as a power supply purifier, is mainly used to improve the power supply quality and protect electronic devices from the impact of power fluctuations. Its working principle mainly includes:

[0003] The power purifier is internally equipped with a filter circuit composed of components such as capacitors and inductors, which can filter out high-frequency noise and harmonic interference in the power grid, reducing the adverse effects on electronic devices; when the power grid voltage fluctuates, if it is overvoltage or undervoltage, the output voltage can be stabilized within a safe range through the built-in automatic voltage stabilizing circuit, ensuring that the connected devices can operate normally; or when it is detected that the load exceeds the preset safe range or a short circuit occurs, the circuit can be immediately disconnected to avoid greater damage.

[0004] Among them, existing power purifiers are generally composed of capacitors (C) and inductors (L). The withstand voltage values of these devices are relatively low, and the current-carrying capacity is small. Directly passing through electromagnetic pulses is likely to cause damage to the filtering devices. Therefore, the suppression of instantaneous high-power circuits is poor, and there are still potential safety hazards. Summary of the Invention

[0005] In summary, the present invention proposes a power safety protection device and a power purifier. First, a transient protection unit is used for current discharge and voltage limitation, discharging most of the current and energy through a short circuit, and then entering a steady-state circuit filtering unit. The high-frequency components are filtered out by the steady-state circuit filtering unit, so that the protected device is effectively protected and the safety is increased.

[0006] The technical solution of the present invention is realized as follows:

[0007] A power safety protection device, characterized in that it includes a transient circuit protection unit and a steady-state circuit filtering unit, wherein,

[0008] The transient circuit protection unit includes at least one housing, on which a first wiring port and a second wiring port are provided. At least one housing forms a cavity through a clamping member, and a first wiring terminal, a second wiring terminal, a switch assembly, a path assembly, a voltage stabilizing assembly, a trigger protection assembly, and a transient protection assembly are all installed in this cavity. The first wiring terminal and the second wiring terminal form a loop through the switch assembly and the path assembly, wherein,

[0009] Both the trigger protection component and the transient protection component can separate the switch component from the path component. When the load exceeds the preset safety range or a short - circuit occurs, the trigger protection component separates the switch component from the path component. When the transient high power is too high, the transient protection component separates the switch component from the path component;

[0010] The steady - state circuit filtering unit is composed of a differential - mode capacitor, a common - mode capacitor stage, and a common - mode inductor.

[0011] Preferably, as the present invention, the switch component includes a switch arm, the switch arm is rotationally connected along a first rotating shaft, and a torsion spring is provided at its rotation position;

[0012] The path component is composed of two identical conductive plates. The conductive plates are respectively installed on both sides of the switch arm. Among them, the first wiring terminal and the second connection terminal are respectively in circuit conduction with one of the conductive plates. A clamping cavity is provided at one end of the conductive plate close to the switch arm. The clamping cavity constitutes a switch electric brake. When the switch arm is located within the switch electric brake, the circuit is conducted; when the switch arm is separated from the switch electric brake, the circuit is disconnected.

[0013] Preferably, as the present invention, a clamping block is provided at the front end of the switch arm. The clamping block is in the shape of a convex block and is used to ensure that the switch arm continuously remains within the switch electric brake without external force.

[0014] Preferably, as the present invention, a first push block and a second push block are also fixedly connected to the switch arm. Among them,

[0015] The trigger protection component separates the switch component from the path component through the first push block, and the transient protection component separates the switch component from the path component through the second push block.

[0016] Preferably, as the present invention, the trigger protection component includes a rocker and a guide rail groove. A spring piece is installed at the bottom of one end of the rocker. The guide rail groove is fixedly connected to the housing,

[0017] Among them, a metal rod is slidably connected to the guide rail groove. One end of the metal rod is installed on the guide rail groove, and the other end is connected to the first push block. A card slot is provided directly above the end of the rocker where the spring piece is installed, and a trigger component is fixedly connected to the card slot.

[0018] Preferably, as the present invention, the trigger component includes a first coil. The first coil is connected to the first wiring terminal. The trigger component also includes a valve body and a first sliding rod. The first sliding rod is located inside the first coil,

[0019] A first return spring is disposed between the first sliding rod and the valve body. A first limiting member is provided at one end of the first sliding rod. The first limiting member cooperates with a second limiting member, and the second limiting member is fixedly installed on the top of the first trigger rod.

[0020] Preferably, a wedge-shaped clamping member is provided at the bottom of the first limiting member, and a groove disc is provided at the top of the second limiting member. The first limiting member and the second limiting member are cooperated by the wedge-shaped clamping member and the groove disc, and a first pre-tightening spring is disposed between the first limiting member and the second limiting member, and the first pre-tightening spring is in a compressed state.

[0021] Preferably, toggle levers are provided on both sides of the second limiting member, and a guide groove is provided on the outer wall of the valve body. The guide groove is in a stepped shape. Among them,

[0022] When the load exceeds a preset safety range or a short circuit occurs, the first sliding rod drives the first trigger rod to move, so that the toggle lever on the second limiting member slides from one end of the guide groove to the other end. The toggle lever drives the second limiting member and the first trigger rod to deflect, so that the first limiting member and the second limiting member are separated.

[0023] Preferably, the transient protection assembly includes a second coil and a valve tube. The valve tube is located inside the second coil. A first fixing member and a second fixing member are fixedly installed inside the valve tube. A second trigger rod is slidably connected to the first fixing member. A second pre-tightening spring is disposed between the second trigger rod and the first fixing member, and the second pre-tightening spring is in a compressed state.

[0024] Preferably, a first magnetic block is fixedly connected to one end of the second trigger rod, and a second magnetic block that attracts it is provided on one side of the first magnetic block.

[0025] Among them, both the first magnetic block and the second magnetic block are located in the chamber of the second fixing member, and a second sliding rod is further provided in the chamber of the second fixing member.

[0026] When the instantaneous high power is too high, the second sliding rod moves in the direction close to the second magnetic block, so that the temperature in the chamber of the second fixing member rises instantaneously. The second trigger rod moves under the action of the second pre-tightening spring, and under the action of the second push block, the switch arm is pushed to separate from the switch electric brake.

[0027] An electric energy purifier, characterized in that the electric energy purifier includes a capacitor, an inductor, a resistor, a varistor and a thermal breaker.

[0028] Implementing this power safety protection device and electric energy purifier of the present invention has the following beneficial effects:

[0029] The present invention first discharges current and limits voltage through a transient protection unit, short-circuiting and discharging most of the current and energy, and then enters a steady-state circuit filtering unit. The high-frequency components are filtered out by the steady-state circuit filtering unit, enabling it to quickly respond to and handle instantaneous high voltages and high currents, protecting the equipment from damage caused by transient events such as lightning strikes and surges, and improving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the power safety protection device of the present invention;

[0031] Figure 2 is a schematic structural diagram of the transient circuit protection unit of the present invention;

[0032] Figure 3 is a schematic structural diagram of the transient circuit protection unit from another angle of the present invention;

[0033] Figure 4 is an installation schematic diagram of the switch assembly and the path assembly of the present invention;

[0034] Figure 5 is Figure 4 the explosion separation diagram of;

[0035] Figure 6 is a schematic structural diagram of the switch assembly of the present invention;

[0036] Figure 7 is a schematic structural diagram of the transient circuit protection unit of the present invention;

[0037] Figure 8 is Figure 7 the enlarged schematic structural diagram at position A in;

[0038] Figure 9 is Figure 7 the enlarged schematic structural diagram at position B in;

[0039] Figure 10 is a schematic structural diagram of the trigger component of the present invention;

[0040] Figure 11 is a partial cross-sectional view of the trigger component of the present invention;

[0041] Figure 12 is the explosion separation diagram of the trigger component of the present invention;

[0042] Figure 13 is a schematic structural diagram of the transient protection component of the present invention;

[0043] Figure 14 is a partial cross-sectional view of the transient protection component of the present invention;

[0044] Figure 15 is the circuit diagram of the steady-state circuit filtering unit of the present invention. Detailed implementation manners

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0046] This embodiment discloses an electric energy purifier. The electric energy purifier includes a capacitor, an inductor, a resistor, a varistor, and a thermal circuit breaker.

[0047] This embodiment also discloses a power safety protection device applied to the electric energy purifier.

[0048] Referring to Figure 1 As shown, the power safety protection device 100 includes a transient circuit protection unit 10 and a steady-state circuit filtering unit 20. First, the transient protection unit 10 discharges current and limits voltage, short-circuits and discharges most of the current and energy, and then enters the steady-state circuit filtering unit 20. The steady-state circuit filtering unit 20 filters out high-frequency components, so that the protected device is effectively protected and the safety is increased.

[0049] Referring to Figures 2 to 3 As shown, the transient circuit protection unit 10 includes a housing 11, and a first wiring port 101 and a second wiring port 102 are arranged on the housing 11. Among them, two housings 11 form a cavity through a clamping member 103, and a first wiring terminal 12, a second connection terminal 13, a switch assembly 14, a path assembly 15, a voltage stabilizing assembly 16, a trigger protection assembly 17, and a transient protection assembly 18 are all installed in this cavity. The first wiring terminal 12 and the second connection terminal 13 form a loop through the switch assembly 14 and the path assembly 15.

[0050] Referring to Figures 4 to 6 As shown, the switch assembly 14 includes a switch arm 141, the switch arm 141 is rotatably connected along a first rotating shaft 142, and a torsion spring 143 is arranged at its rotating position. Among them, a fixing rod 144 is arranged above the switch arm 141, the fixing rod 144 is fixedly connected to the housing 11, and a tension spring 145 is arranged between the fixing rod 144 and the switch arm 141.

[0051] The path assembly 15 is composed of two identical conductive plates 151, and the conductive plates 151 are respectively installed on both sides of the switch arm 141. Among them, the first wiring terminal 12 and the second connection terminal 13 are respectively in electrical conduction with one of the conductive plates 151. A clamping cavity 152 is arranged at one end of the conductive plate 151 close to the switch arm 141.

[0052] Specifically, the two clamping cavities 152 form a switch electric brake, and the switch arm 141 rotates around the first rotating shaft 142 as the center along Figure 4Rotate in the F2 direction to place it inside the switch circuit breaker or separate from the switch circuit breaker. When the switch arm 141 is inside the switch circuit breaker, the circuit is conductive; when the switch arm 141 is separated from the switch circuit breaker, the circuit is disconnected. Wherein, a clamping block 141A is provided at the front end of the switch arm 141, and the clamping block 141A is in the shape of a convex block, which is used to ensure that the switch arm 141 can continuously stay inside the switch circuit breaker without external force.

[0053] Further, due to unstable power supply from the mains and momentary voltage drop when a high-power electrical appliance starts, the voltage passing through the transient circuit protection unit 100 is not stable. A voltage stabilizing component 16 is provided below the path component 15. The conductive plate 151 connected to the first wiring terminal 12 and the second connection terminal 13 respectively forms a loop through the voltage stabilizing component 16. The voltage stabilizing component 16 is equivalent to a variable resistor, and absorbs the excess voltage through the conduction of its internal crystal chip, thereby maintaining the stability of the output voltage.

[0054] In this embodiment, both the trigger protection component 17 and the transient protection component 18 can separate the switch arm 141 from the switch circuit breaker, that is, the circuit is disconnected. When the load exceeds the preset safety range or a short circuit occurs, the trigger protection component 17 separates the switch arm 141 from the switch circuit breaker; when the instantaneous high power is too high, the transient protection component 18 separates the switch arm 141 from the switch circuit breaker, thereby increasing safety. Wherein, a first push block 146 and a second push block 149 are also fixedly connected to the switch arm 141. The trigger protection component 17 separates the switch arm 141 from the switch circuit breaker through the first push block 146, and the transient protection component 18 separates the switch arm 141 from the switch circuit breaker through the second push block 149.

[0055] Further, the switch component 14 further includes a second rotating shaft 147, and a reset arm 148 is rotatably connected to the second rotating shaft 147. After the switch arm 141 is separated from the switch circuit breaker, the reset arm 148 rotates around the second rotating shaft 147 along Figure 4 the F2 direction in the figure to push the switch arm 141 back into the switch circuit breaker to achieve circuit conduction.

[0056] The following further elaborates on the specific structures of the trigger protection component 17 and the transient protection component 18. Refer to Figures 7 to 9 As shown, the trigger protection component 17 includes a seesaw 171 and a guide rail groove 173. A spring piece 172 is installed at the bottom of one end of the seesaw 171. The guide rail groove 173 is fixedly connected to the housing 11. Among them, a metal rod 174 is slidably connected to the guide rail groove 173. One end of the metal rod 174 is installed on the guide rail groove 173, and the other end is connected to the first push block 146. There is a card slot 175 directly above the end of the seesaw 171 where the spring piece 172 is installed, and a trigger component 176 is fixedly connected to the card slot 175.

[0057] Specifically, when the load exceeds the preset safety range or a short circuit occurs, the trigger component 176 pushes down one end of the rocker 171, and the other end of the rocker 171 pushes the metal rod 174 to move upward along the guide groove 173, thereby driving the first push block 146 and separating the switch arm 141 from the switch electric brake.

[0058] Further, as Figures 10 to 12 shown, the trigger component 176 includes a first coil 176A, and the first coil 176A is connected to the first terminal 12. The trigger component 176 further includes a valve body 176B and a first sliding rod 176C, and the first sliding rod 176C is located inside the first coil 176A. When the circuit is turned on, the first sliding rod 176C is affected by the first coil 176A and moves along the valve body 176B in the Figure 11 direction of F3 in the figure. A first return spring 176E is arranged between the first sliding rod 176C and the valve body 176B for resetting when the first sliding rod 176C moves. One end of the first sliding rod 176C is provided with a first limiting member 176F, and the first limiting member 176F cooperates with a second limiting member 176I, and the second limiting member 176I is fixedly installed at the top of the first trigger rod 176D. Among them, a wedge-shaped clamping member 176G is arranged at the bottom of the first limiting member 176F, and a groove disk 176K is arranged at the top of the second limiting member 176I. Through the wedge-shaped clamping member 176G and the groove disk 176K, the cooperation between the first limiting member 176F and the second limiting member 176I is realized. And a first pre-tightening spring 176H is arranged between the first limiting member 176F and the second limiting member 176I, and the first pre-tightening spring 176H is in a compressed state. Dial rods 176J are arranged on both sides of the second limiting member 176I, and a guide groove 176L is arranged on the outer wall of the valve body 176B, and the guide groove 176L is in a stepped shape. The dial rods 176J are located in the guide groove 176L and slide along the guide groove 176L.

[0059] Specifically, the first sliding rod 176C is affected by the first coil 176A and moves along the valve body 176B in the Figure 11 direction of F3 in the figure. The first sliding rod 176C also drives the first trigger rod 176D to move through the cooperation of the first limiting member 176F and the second limiting member 176I.

[0060] When the load exceeds the preset safety range or a short - circuit occurs, the first sliding rod 176C drives the first trigger rod 176D to move, causing the lever 176J on the second limiting member 176I to slide from one end of the guiding groove 176L to the other end. At this time, under the action of the guiding groove 176L, the lever 176J drives the second limiting member 176I and the first trigger rod 176D to deflect, separating the first limiting member 176F from the second limiting member 176I. At this moment, under the action of the first pre - tightening spring 176H, the first trigger rod 176D is pushed to move further downward, pressing one end of the rocker 171 downward to disconnect the circuit.

[0061] Refer to Figures 13 to 14 As shown, the transient protection component 18 includes a second coil 181 and a valve tube 182. The valve tube 182 is located inside the second coil 181. A first fixing member 184 and a second fixing member 187 are fixedly installed inside the valve tube 182. A second trigger rod 183 is slidably connected to the first fixing member 184. A second pre - tightening spring 186 is arranged between the second trigger rod 183 and the first fixing member 184, and the second pre - tightening spring 186 is in a compressed state. One end of the second trigger rod 183 is fixedly connected to a first magnetic block 185. A second magnetic block 188 that attracts it is arranged on one side of the first magnetic block 185. Among them, both the first magnetic block 185 and the second magnetic block 188 are located in the chamber of the second fixing member 187, and a second sliding rod 189 is also arranged in the chamber of the second fixing member 187. The second sliding rod 189 moves along the Figure 14 direction of F4 in

[0062] Specifically, the second coil 181 is connected to the second terminal 13. Affected by the second coil 181, the second sliding rod 189 slides in the chamber of the second fixing member 187. When the instantaneous high power is too high, the second sliding rod 189 quickly moves in the direction close to the second magnetic block 188, causing the temperature in the chamber of the second fixing member 187 to rise instantaneously. After the temperature rises, the first magnetic block 185 and the second magnetic block 188 are demagnetized briefly, causing the second trigger rod 183 to move under the action of the second pre - tightening spring 186. Moreover, under the action of the second push block 149, the second trigger rod 183 pushes the switch arm 141 to separate from the switch electric brake, realizing the disconnection of the circuit.

[0063] In this embodiment, the steady-state circuit filtering unit 20 is further elaborated. The steady-state circuit filtering unit 20 is composed of a differential-mode capacitor, a common-mode capacitor stage, and a common-mode inductor. The differential-mode capacitor is usually connected between the live wire and the neutral wire to filter out differential-mode noise; the common-mode capacitors are respectively connected between the live wire and the ground wire, and between the neutral wire and the ground wire to filter out common-mode noise. The common-mode inductor is used to suppress common-mode noise and has little effect on differential-mode current. The common-mode inductor usually consists of two coils wound around the same magnetic core, and the live wire and the neutral wire pass through these two coils respectively. The magnetic fields generated by the common-mode current in the two coils have the same direction, thus enhancing the inductance effect and suppressing common-mode noise. While the magnetic fields generated by the differential-mode current in the two coils have opposite directions and cancel each other out, so it has little effect on the differential-mode current.

[0064] Referring to Figure 15 as shown, the inductor L 1 represents the common-mode inductor, which is composed of two independent coils with the same number of turns, opposite winding directions, and on the same magnetic ring. When the inductor L 1 is in the working state, due to the opposite winding directions of the two coils, under the action of the in-and-out current, magnetic fluxes with the same direction are formed and superimposed on each other, enhancing the ability to suppress common-mode interference. Cooperating with the common-mode capacitor C Y to complete the suppression of interference between the line and the ground. L 2 is the differential-mode inductor, which is composed of two symmetric coils with the same winding direction, mainly used to suppress differential-mode noise at high currents. Cooperating with the differential-mode capacitor C X to complete the suppression of interference between the lines.

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric power safety protection device, characterized in that: It includes a transient circuit protection unit and a steady-state circuit filtering unit, wherein: The transient circuit protection unit comprises at least one housing, on which a first wiring port and a second wiring port are arranged, at least one housing forms a cavity through a snap-fitting member, and a first wiring terminal, a second wiring terminal, a switch component, a passage component, a voltage stabilizing component, a trigger protection component and a transient protection component are all installed in the cavity, and the first wiring terminal and the second wiring terminal form a loop through the switch component and the passage component, wherein: Both the trigger protection component and the transient protection component can separate the switch component from the path component. When the load exceeds the preset safety range or a short circuit occurs, the trigger protection component separates the switch component from the path component. When the instantaneous high power is too high, the transient protection component separates the switch component from the path component. The steady-state circuit filter unit is composed of a differential mode capacitor, a common mode capacitor stage and a common mode inductor. The switch assembly includes a switch arm, and the switch arm is fixedly connected to a first push block and a second push block. The trigger protection assembly includes a rocker and a guide rail groove. A spring sheet is installed at the bottom of one end of the rocker, and the guide rail groove is fixedly connected to the housing. A metal rod is slidably connected to the guide groove, one end of the metal rod is mounted on the guide groove, and the other end is mounted on the first push block. A card slot is provided just above one end of the rocker plate where the spring sheet is mounted, and a trigger component is fixedly connected to the card slot. The trigger component includes a first coil, which is connected to the first terminal. The trigger component also includes a valve body and a first sliding rod, which is located inside the first coil. A first return spring is arranged between the first sliding rod and the valve body, a first limiting member is arranged at one end of the first sliding rod, the first limiting member cooperates with the second limiting member, and the second limiting member is fixedly mounted on the top of the first trigger rod. The transient protection component includes a second coil and a valve tube. The valve tube is located inside the second coil. A first fixing member and a second fixing member are fixedly installed inside the valve tube. A second trigger rod is slidably connected to the first fixing member. A second preload spring is arranged between the second trigger rod and the first fixing member. The second preload spring is in a compressed state.

2. The power safety protection device according to claim 1, characterized in that: The switch arm is rotatably connected along the first rotating shaft, and a torsion spring is arranged at the rotating position thereof; The passage assembly is composed of two identical conductive plates, which are respectively installed on both sides of the switch arm, wherein the first connection terminal and the second connection terminal are respectively connected to one of the conductive plates to form a circuit, and a clamping cavity is provided at one end of the conductive plate close to the switch arm, and the clamping cavity constitutes a switch switch. When the switch arm is located in the switch switch, the circuit is connected; when the switch arm is separated from the switch switch, the circuit is disconnected. The front end of the switch arm is provided with a locking block, which is in the shape of a convex block and is used to ensure that the switch arm is continuously located in the switch gate when not affected by external forces.

3. The power safety protection device according to claim 1, characterized in that: The trigger protection component separates the switch component from the passage component through the first push block, and the transient protection component separates the switch component from the passage component through the second push block.

4. The power safety protection device according to claim 1, characterized in that: A wedge-shaped clamp is provided at the bottom of the first limiting member, and a groove disk is provided at the top of the second limiting member. The wedge-shaped clamp and the groove disk make the first limiting member and the second limiting member cooperate with each other, and a first preload spring is provided between the first limiting member and the second limiting member, and the first preload spring is in a compressed state.

5. The power safety protection device according to claim 4, characterized in that: The second limiting member is provided with levers on both sides, and the outer wall of the valve body is provided with guide grooves, which are in a stepped shape, wherein: When the load exceeds a preset safety range or a short circuit occurs, the first sliding rod drives the first trigger rod to move, causing the lever on the second limiting member to slide from one end of the guide groove to the other end, and the lever drives the second limiting member and the first trigger rod to deflect, causing the first limiting member to separate from the second limiting member.

6. The power safety protection device according to claim 1, characterized in that: One end of the second trigger rod is fixedly connected to a first magnetic block, and one side of the first magnetic block is provided with a second magnetic block that attracts the first magnetic block. The first magnetic block and the second magnetic block are both located in the chamber of the second fixing member, and a second sliding rod is also disposed in the chamber of the second fixing member. When the instantaneous high power is too high, the second sliding rod moves toward the second magnetic block, causing the chamber temperature in the second fixing member to rise instantly. The second trigger rod moves under the action of the second preload spring, and under the action of the second push block, pushes the switch arm to separate from the switch circuit breaker.

7. An electric energy purifier, characterized in that: It includes the electric power safety protection device as claimed in claim 1.

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