CN111223647A

CN111223647A - High-frequency transformer magnetic core structure

Info

Publication number: CN111223647A
Application number: CN202010146596.1A
Authority: CN
Inventors: 吴世伟
Original assignee: Fuzhou City Shuangling Magnetic Materials Co ltd
Current assignee: Fuzhou City Shuangling Magnetic Materials Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-06-02
Anticipated expiration: 2040-03-05
Also published as: CN111223647B

Abstract

The invention discloses a high-frequency transformer magnetic core structure, which comprises a magnetic core, wherein a winding is fixedly connected to the side surface of the magnetic core, a supporting rod is inserted into the top of the magnetic core, a magnetic block is fixedly connected to the top of the supporting rod, a ratchet wheel is engaged and connected to the side surface of the clamping rod, a push rod is engaged and connected to the inner wheel surface of the ratchet wheel, a vertical toothed rod is rotatably connected to the surface of the ratchet wheel, a horizontal toothed rod is engaged and connected to the bottom of the vertical toothed rod, an air-through block is inserted into the side surface of the horizontal toothed rod, an air suction fan is arranged inside the horizontal toothed rod, a condenser is arranged on the right side of the air suction fan, cutting rods are fixedly connected to the two ends of the horizontal toothed rod, a lead is rotatably connected to the side surface of the horizontal toothed rod, a fixed rod is, thereby achieving the effect of compensating part of leaked magnetic energy when the transformer works.

Description

High-frequency transformer magnetic core structure

Technical Field

The invention relates to the technical field of high-frequency transformers, in particular to a magnetic core structure of a high-frequency transformer.

Background

The high-frequency transformer is a power transformer with the working frequency exceeding the intermediate frequency, is mainly used as a high-frequency switching power transformer in a high-frequency switching power supply, is also used as a high-frequency inverter power transformer in a high-frequency inverter power supply and a high-frequency inverter welding machine, and can be divided into several grades according to the working frequency: 10kHz-50kHz, 50kHz-100kHz, 100 kHz-500 kHz, 500 kHz-1 MHz and more than 1 MHz.

In the working process of the transformer, a certain gap is formed between the coils wound on the magnetic core, a small electromagnet is formed between the gaps, a magnetic induction line of the small electromagnet is provided, and the small electromagnet is closed, so that magnetic induction intensity different from theory can be generated, namely magnetic leakage, and the magnetic leakage phenomenon can change the output voltage of the transformer and cause adverse effect on a circuit.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a magnetic core structure of a high-frequency transformer, which has the advantages of compensating part of leaked magnetic energy when the transformer works and the like, and solves the problem that the leaked magnetic energy cannot be compensated by the conventional transformer.

(II) technical scheme

In order to realize the purpose of compensating the magnetic energy partially leaked during the working of the transformer, the invention provides the following technical scheme: the utility model provides a high frequency transformer magnetic core structure, includes the magnetic core, the side fixedly connected with wire winding of magnetic core, the top of magnetic core alternates and is provided with the bracing piece, the top fixedly connected with magnetic path of bracing piece, the bottom of bracing piece is rotated and is connected with the kelly, the side meshing of kelly is connected with the ratchet, the interior wheel surface meshing of ratchet is connected with the push rod, the surface rotation of ratchet is connected with vertical ratch, the bottom meshing of vertical ratch is connected with horizontal ratch, the side interlude of horizontal ratch is provided with the piece of ventilating, the inside of horizontal ratch is provided with the fan of bleeding, the right side of bleeding is provided with the condenser, the both ends fixedly connected with cutting rod of horizontal ratch, the side of horizontal ratch is rotated and is connected with the wire, the inside fixedly connected with.

Preferably, the magnetic blocks are located on two sides of the top of the magnetic core and are symmetrically distributed, and the magnetic force applied to the two magnetic blocks is kept the same when no magnetic leakage exists.

Preferably, the fixed rod is provided with a cross channel, and the horizontal toothed bar and the vertical toothed bar are in inner engagement connection in the cross channel to prevent the vertical magnetic bar from deviating.

Preferably, an offset spring is arranged inside the vertical rack, so that the vertical rack is prevented from being clamped by the fixing rod when the ratchet rotates.

Preferably, the inner and outer teeth of the ratchet wheel are opposite in direction.

Preferably, the bottom of the support rod is provided with a support spring.

Preferably, a one-way air outlet valve is arranged on the right side of the condenser.

Preferably, the condenser has an internal temperature sensor, so that when the temperature around the magnetic core drops to a certain degree, the heat generated by the condenser is released.

(III) advantageous effects

Compared with the prior art, the invention provides a magnetic core structure of a high-frequency transformer, which has the following beneficial effects:

1. this high frequency transformer magnetic core structure uses through the cooperation of magnetic core and magnetic path, and at the transformer during operation, the magnetic field that forms between the wire winding on the magnetic core, as shown in fig. 3, and when the magnetic leakage phenomenon did not appear, because the magnetic path is at magnetic core top symmetric distribution, so the magnetic field that two wrapping posts of magnetic core produced is the same, consequently the magnetic force to two magnetic paths is the same, and the magnetic path extrusion bracing piece, two bracing pieces extrude kelly and push rod respectively, and kelly and push rod are connected in the ratchet meshing respectively, so the ratchet is static.

When the magnetic leakage phenomenon occurs, the energy of the magnetic leakage field is firstly converted into electric energy and then converted into magnetic energy to compensate the magnetic core by utilizing the cutting rod and the lead, so that the effect of compensating the magnetic energy which is partially leaked when the transformer works is achieved.

2. This high frequency transformer magnetic core structure, cooperation through horizontal ratch and ventilation piece is used, when the magnetic leakage takes place, the current increase in the right side wire winding, make the magnetic core aggravate that generates heat, consequently when horizontal ratch rotates, the piece of ventilating moves to keeping away from horizontal ratch side under the effect of centrifugal force, open the through-hole of horizontal ratch, meanwhile, the suction fan rotates along with horizontal ratch, the suction fan will be inhaled by the air that the magnetic core heated from the through-hole that horizontal ratch side was seted up, absorb heat energy entering the condenser, horizontal ratch of discharging at last, the heat dissipation progress of magnetic core has been accelerated to this process, the magnetic core has been prevented to take place the condition emergence of damage owing to overheated, thereby reached and prevented that the magnetic core is overheated and take place the effect of damage when the magnetic leakage.

Drawings

FIG. 1 is a front cross-sectional view of the structure of the present invention;

FIG. 2 is a schematic view of the magnetic field of the magnetic core of the present invention;

FIG. 3 is a schematic view of the structural leakage magnetic field of the present invention;

FIG. 4 is an enlarged view of the mechanism for connecting the ratchet wheel according to the present invention;

fig. 5 is a cross-sectional view of the horizontal rack bar of the present invention.

In the figure: 1. the magnetic core, 2, a winding, 3, a support rod, 4, a magnetic block, 5, a fixing rod, 6, a horizontal toothed rod, 7, a cutting rod, 8, a conducting wire, 9, a clamping rod, 10, a ratchet, 11, a push rod, 12, a vertical toothed rod, 13, a ventilation block, 14, an exhaust fan, 15 and a condenser.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a high frequency transformer magnetic core structure includes a magnetic core 1, the magnetic core 1 is made of iron oxide mixture, which can effectively prevent the equipment from being corroded, greatly prolongs the service life of the equipment, reduces the production cost, and plays an indispensable role for enterprises, the side surface of the magnetic core 1 is fixedly connected with a winding 2, the top of the magnetic core 1 is inserted with a support rod 3, the bottom of the support rod 3 is provided with a support spring, the top of the support rod 3 is fixedly connected with a magnetic block 4, the magnetic block 4 is attracted to a repulsive force magnetic force in the magnetic field of the magnetic core 1 and is supported by the support spring below the support rod 3, the resultant force of the elastic force and the gravity of the support rod 3 and the magnetic block 4 keeps balanced when no magnetic leakage exists, the magnetic blocks 4 are located at both sides of the top of the magnetic core 1 and are symmetrically distributed, the magnetic force borne by the two magnetic blocks 4 is kept the same when no magnetic, the side surface of the clamping rod 9 is engaged and connected with a ratchet wheel 10, the inner gear and the outer gear of the ratchet wheel 10 are opposite in direction, the inner gear surface of the ratchet wheel 10 is engaged and connected with a push rod 11, the surface of the ratchet wheel 10 is rotatably connected with a vertical toothed rod 12, an offset spring is arranged inside the vertical toothed rod 12 to prevent the vertical toothed rod 12 from being clamped by a fixed rod 5 when the ratchet wheel 10 rotates, the bottom of the vertical toothed rod 12 is engaged and connected with a horizontal toothed rod 6, the side surface of the horizontal toothed rod 6 is penetrated and provided with an air ventilation block 13, an air suction fan 14 is arranged inside the horizontal toothed rod 6, the right side of the air suction fan 14 is provided with a condenser 15, the right side of the condenser 15 is provided with a one-way air outlet valve, an internal temperature sensor of the condenser 15 is arranged, so that when the temperature around a magnetic core is reduced to a certain degree, the heat generated by the condenser 15 can, the inside fixedly connected with dead lever 5 of magnetic core 1, the cross passageway has been seted up to dead lever 5, and horizontal ratch 6 is connected at the inner gearing of cross passageway with vertical ratch 12, prevents the skew of vertical magnetic pole 12.

When the transformer works, a magnetic field formed between the windings 2 wound on the magnetic core 1 is as shown in fig. 3, and when the magnetic flux leakage phenomenon does not occur, because the magnetic blocks 4 are symmetrically distributed above the magnetic core 1, the magnetic fields generated by the two windings 2 of the magnetic core 1 are the same, the magnetic force to the two magnetic blocks 4 is the same, the magnetic blocks 4 press the support rods 3, the two support rods 3 respectively press the clamping rod 9 and the push rod 11, and the clamping rod 9 and the push rod 11 are respectively engaged with the ratchet 10, so the ratchet 10 is static.

When the magnetic leakage phenomenon occurs, the intensity of the magnetic field on the right side is weakened due to the consumption of the energy by the winding 2 on the left side, the height of the right magnetic block 4 is reduced, the height of the support rod 3 is reduced, finally the push rod 11 is driven to be meshed with the ratchet wheel 10 to rotate, the ratchet wheel 10 rotates clockwise to drive the vertical toothed bar 12 to move upwards, the vertical toothed bar 12 is meshed with the horizontal toothed bar 6 to rotate, cutting lines at two ends of the horizontal toothed bar 6 rotate in a magnetic field formed between the windings 2, as shown in fig. 3, the current generated from the cutting bar 7 is fed into the right winding 2 along the wire 8, the current in the winding 2 is increased, the resistance is not changed, so that the right output voltage is increased, and further, the magnetic field generated by the right winding 2 column is enhanced, and the enhanced magnetic field enables the right magnetic block 4 to move upwards to drive the issued supporting rod 3 and the push rod 11, so that the ratchet wheel 10 rotates anticlockwise and restores to the initial position.

The energy of the leakage magnetic field is firstly converted into electric energy and then converted into magnetic energy to be compensated to the magnetic core 1, so that the effect of compensating part of leaked magnetic energy when the transformer works is achieved.

When the magnetic leakage takes place, the current increases in the wire winding 2 of right side, make magnetic core 1 generate heat the aggravation, consequently when horizontal ratch 6 rotates, logical air parcel 13 is to keeping away from horizontal ratch 6 side and removing under the effect of centrifugal force, open the through-hole of horizontal ratch 6, meanwhile extraction fan 14 rotates along with horizontal ratch 6, the through-hole that extraction fan 14 was seted up from horizontal ratch 6 side will be inhaled by the air that magnetic core 1 heated, absorb heat energy entering condenser 15, horizontal ratch 6 of last discharge, the heat dissipation progress of magnetic core 1 has been accelerated in this process, the condition that magnetic core 1 took place the damage because overheated has been prevented from taking place takes place, thereby reached and prevented that magnetic core 1 is overheated and take place the effect of damage when the magnetic leakage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-frequency transformer core structure, includes magnetic core (1), its characterized in that: the side of the magnetic core (1) is fixedly connected with a winding (2), the top of the magnetic core (1) is provided with a support rod (3) in an inserted mode, the top of the support rod (3) is fixedly connected with a magnetic block (4), the bottom of the support rod (3) is connected with a clamping rod (9) in a rotating mode, the side of the clamping rod (9) is connected with a ratchet wheel (10) in an engaged mode, the surface of the inner wheel of the ratchet wheel (10) is connected with a push rod (11) in an engaged mode, the surface of the ratchet wheel (10) is connected with a vertical toothed rod (12) in a rotating mode, the bottom of the vertical toothed rod (12) is connected with a horizontal toothed rod (6) in an engaged mode, the side of the horizontal toothed rod (6) is provided with an air through block (13) in an inserted mode, an air exhaust fan (14) is arranged inside the horizontal toothed rod (6), the right, the side of horizontal ratch (6) rotates and is connected with wire (8), the inside fixedly connected with dead lever (5) of magnetic core (1).

2. A high-frequency transformer core structure according to claim 1, wherein: the magnetic blocks (4) are positioned on two sides of the top of the magnetic core (1) and are symmetrically distributed.

3. A high-frequency transformer core structure according to claim 1, wherein: the fixed rod (5) is provided with a cross channel, and the horizontal toothed bar (6) and the vertical toothed bar (12) are in inner engagement connection in the cross channel.

4. A high-frequency transformer core structure according to claim 1, wherein: an offset spring is arranged inside the vertical rack (12).

5. A high-frequency transformer core structure according to claim 1, wherein: the inner gear teeth and the outer gear teeth of the ratchet wheel (10) are opposite in direction.

6. A high-frequency transformer core structure according to claim 1, wherein: and a supporting spring is arranged at the bottom of the supporting rod (3).

7. A high-frequency transformer core structure according to claim 1, wherein: and a one-way air outlet valve is arranged on the right side of the condenser (15).

8. A high-frequency transformer core structure according to claim 1, wherein: an internal temperature sensor of the condenser (15).