CN210896826U

CN210896826U - Protective resistor of power frequency transformer

Info

Publication number: CN210896826U
Application number: CN201922290280.5U
Authority: CN
Inventors: 高茂凤
Original assignee: Yangzhou Runfeng Auto Parts Co ltd
Current assignee: Yangzhou Runfeng Auto Parts Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-06-30
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a power frequency transformer protection resistor, including aluminum hull and thermistor, the inboard of aluminum hull is passed through the fixed column and is connected with thermistor's first sealed shell, the internal connection of first sealed shell has the second sealed shell, just be provided with the lipid heat dissipation layer in the clearance of first sealed shell and the sealed shell of second, the internal connection of the sealed shell of second has the temperature sensing chip, just be provided with phase transition heat conduction material layer in the clearance of the sealed shell of second and temperature sensing chip, the lead wire of temperature sensing chip runs through the sealed shell of second, first sealed shell and aluminum hull, and is two sets of first wiring pin and second wiring pin have been cup jointed respectively to the one end of lead pin. The utility model discloses a cooperation that matches heat conducting material layer and lipid heat dissipation layer is used, can cool down to the temperature sensing chip when high temperature, through heat dissipation wire net and aluminum hull, has further improved the radiating effect simultaneously, the effectual life and the stability that prolongs the temperature sensing chip.

Description

Protective resistor of power frequency transformer

Technical Field

The utility model relates to a protection resistance technical field specifically is a power frequency transformer protection resistance.

Background

The power frequency transformer is also called as a low frequency transformer to show that the transformer is different from a high frequency transformer for a switching power supply, the power frequency transformer is largely used in the traditional power supply in the past, the power frequency generally refers to the frequency of commercial power, the frequency is 50Hz in China, the frequency of the commercial power is 60Hz in other countries, and the transformer capable of changing the voltage of alternating current of the frequency is called as a power frequency transformer.

In summer, many families use air conditioners to cool and avoid summer heat, but when the power frequency transformer is overloaded for a long time, faults are easy to occur, in the traditional protection mode, a fuse cannot be recovered automatically after being fused, and the PTC thermistor can recover the protection function after the faults are removed, but the PTC thermistor still has the problems of insufficient heat resistance and heat dissipation, so that the aging of materials is easy to cause, and the service performance and the service life of the thermistor are influenced. Therefore, it is desirable to provide a protection resistor for a power frequency transformer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a power frequency transformer protective resistor uses through the cooperation that matches thermal conductive material layer and lipid heat dissipation layer, can cool down the temperature sensing chip when high temperature, and through the use of heat dissipation silk screen and aluminum hull, further improved the radiating effect simultaneously, the effectual life and the stability that have prolonged the temperature sensing chip to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a power frequency transformer protection resistor, includes aluminum hull and thermistor, the inboard fixedly connected with fixed column of aluminum hull, thermistor's outside is provided with first sealed shell, the first sealed shell of one end fixedly connected with of fixed column, the inside fixedly connected with second sealed shell of first sealed shell, just be provided with the lipid heat dissipation layer in the clearance between first sealed shell and the second sealed shell, the inside fixedly connected with temperature sensing chip of second sealed shell, just be provided with the phase transition heat conduction material layer in the clearance between second sealed shell and the temperature sensing chip, the pin of temperature sensing chip runs through second sealed shell, first sealed shell and aluminum hull in proper order, just the sealed piece of fixedly connected with of department that runs through of pin, and two sets of the one end of pin has cup jointed first wiring pin and second wiring pin respectively.

Preferably, the aluminum shell is circular, heat dissipation holes are formed in the surface of the aluminum shell, and the inner side of the aluminum shell is fixedly connected with the first sealing shell through a heat dissipation wire mesh.

Preferably, the first sealing shell and the second sealing shell are both made of aluminum and are cylindrical, and the inner diameter of the first sealing shell is larger than that of the second sealing shell.

Preferably, the sealing blocks are arranged in four groups, and the sealing blocks are arranged in a spherical shape.

Preferably, first wiring pin is including the thermal-insulated pipe of the first high temperature of rock wool system, just the first insulating plastic tubing of one end fixedly connected with of the thermal-insulated pipe of first high temperature, second wiring pin is including the thermal-insulated pipe of the second high temperature of rock wool system, just the one end fixedly connected with second insulating plastic tubing of the thermal-insulated pipe of second high temperature.

Preferably, the first high-temperature heat insulation pipe and the second high-temperature heat insulation pipe are both arranged in an arc shape, and the arc inner sides of the first high-temperature heat insulation pipe and the second high-temperature heat insulation pipe are symmetrically arranged.

Compared with the prior art, the beneficial effects of the utility model are that: through the cooperation of matching heat conduction material layer and lipid heat dissipation layer and using, can cool down the temperature sensing chip when high temperature, through the use of heat dissipation silk screen and aluminum hull, further improved the radiating effect simultaneously, the effectual life and the stability that prolongs the temperature sensing chip.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

fig. 3 is a schematic sectional view of the first insulating plastic pipe of the present invention.

In the figure: 1. an aluminum shell; 2. heat dissipation holes; 3. a heat-dissipating wire mesh; 4. a thermistor; 5. a first wiring pin; 501. a first high temperature insulating tube; 502. a first insulating plastic tube; 6. a second terminal pin; 601. a second high temperature insulating tube; 602. a second insulating plastic tube; 7. fixing a column; 8. a first sealed case; 9. a lipid heat dissipation layer; 10. a second sealed housing; 11. a phase change heat conductive material layer; 12. a heat-sensitive chip; 13. a terminal pin; 14. and (6) sealing the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a power frequency transformer protection resistor comprises an aluminum shell 1 and a thermistor 4, wherein the inner side of the aluminum shell 1 is fixedly connected with a fixing column 7, the outer part of the thermistor 4 is provided with a first sealing shell 8, one end of the fixing column 7 is fixedly connected with the first sealing shell 8, the inner part of the first sealing shell 8 is fixedly connected with a second sealing shell 10, and a lipid heat dissipation layer 9 is arranged in the gap between the first sealing shell 8 and the second sealing shell 10, a heat sensitive chip 12 is fixedly connected inside the second sealing shell 10, and a phase change heat conducting material layer 11 is arranged in a gap between the second sealing shell 10 and the heat sensitive chip 12, a terminal pin 13 of the heat sensitive chip 12 sequentially penetrates through the second sealing shell 10, the first sealing shell 8 and the aluminum shell 1, and the penetrating part of the terminal pins 13 is fixedly connected with a sealing block 14, and one end of each of the two groups of terminal pins 13 is respectively sleeved with the first wiring pin 5 and the second wiring pin 6.

In actual implementation: the aluminum shell 1 is arranged in a ring shape, heat dissipation holes 2 are formed in the surface of the aluminum shell 1, the inner side of the aluminum shell 1 is fixedly connected with a first sealing shell 8 through a heat dissipation screen 3 and used for improving the heat dissipation effect, the first sealing shell 8 and a second sealing shell 10 are both arranged into aluminum cylindrical sealing shells, the inner diameter of the first sealing shell 8 is larger than that of the second sealing shell 10, four groups of sealing blocks 14 are arranged, the sealing blocks 14 are arranged into a ball shape and used for preventing the penetration of internal substances, a first wiring pin 5 comprises a first high-temperature heat insulation pipe 501 made of rock wool, a second wiring pin 6 comprises a second high-temperature heat insulation pipe 601 made of rock wool, the first high-temperature heat insulation pipe 501 and the second high-temperature heat insulation pipe 601 are both arranged into an arc shape, the arc inner sides of the first high-temperature heat insulation pipe 501 and the second high-temperature heat insulation pipe 601 are symmetrically arranged and can be used for firmly positioning when a, and one end of the first high temperature heat insulation pipe 501 is fixedly connected with the first insulation plastic pipe 502, and one end of the second high temperature heat insulation pipe 601 is fixedly connected with the second insulation plastic pipe 602, so that electric arcs can be prevented from being generated between the terminal pins 13, and the practicability of use is improved.

The working principle is explained as follows: in the time of in-service use, connect this protective resistor's pin 13 in the protection circuit of transformer, when transformer work is unusual, temperature sensing chip 12, and set up to PTC temperature sensing chip, work as protective resistor, the resistance value of temperature sensing chip 12 is along with sharp rising, reach the effect of limiting current, avoid damaging the components and parts in the circuit, phase change heat conduction material layer 11, and set up to 8511 phase change heat conduction material layer, use through the cooperation of using phase change heat conduction material layer 11 and lipid heat dissipation layer 9, can be quick distribute the heat of temperature sensing chip 12 to the external conduction, simultaneously through the use of heat dissipation silk screen 3 and aluminum hull 1, further distribute the heat to the external conduction, can effectual extension temperature sensing chip 12's life and stability.

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. The utility model provides a power frequency transformer protection resistance, includes aluminum hull (1) and thermistor (4), its characterized in that: a fixing column (7) is fixedly connected to the inner side of the aluminum shell (1), a first sealing shell (8) is arranged outside the thermistor (4), one end of the fixing column (7) is fixedly connected with the first sealing shell (8), a second sealing shell (10) is fixedly connected to the inside of the first sealing shell (8), a lipid heat dissipation layer (9) is arranged in a gap between the first sealing shell (8) and the second sealing shell (10), a thermosensitive chip (12) is fixedly connected to the inside of the second sealing shell (10), a phase-change heat conduction material layer (11) is arranged in a gap between the second sealing shell (10) and the thermosensitive chip (12), a lead pin (13) of the thermosensitive chip (12) sequentially penetrates through the second sealing shell (10), the first sealing shell (8) and the aluminum shell (1), and a sealing block (14) is fixedly connected to the penetrating position of the lead pin (13), and one end of each of the two groups of the lead pins (13) is respectively sleeved with a first wiring pin (5) and a second wiring pin (6).

2. The power frequency transformer protection resistor of claim 1, wherein: the aluminum shell (1) is arranged in a circular ring shape, heat dissipation holes (2) are formed in the surface of the aluminum shell (1), and the inner side of the aluminum shell (1) is fixedly connected with the first sealing shell (8) through a heat dissipation wire mesh (3).

3. The power frequency transformer protection resistor of claim 1, wherein: the first sealing shell (8) and the second sealing shell (10) are both made of aluminum and are cylindrical.

4. The power frequency transformer protection resistor of claim 1, wherein: the sealing blocks (14) are arranged in four groups, and the sealing blocks (14) are arranged in a spherical shape.

5. The power frequency transformer protection resistor of claim 1, wherein: first wiring pin (5) are including the thermal-insulated pipe of first high temperature (501) of rock wool system, just the first insulating plastic tubing of one end fixedly connected with (502) of the thermal-insulated pipe of first high temperature (501), second wiring pin (6) are including the thermal-insulated pipe of second high temperature (601) of rock wool system, just the insulating plastic tubing of one end fixedly connected with second (602) of the thermal-insulated pipe of second high temperature (601).

6. The industrial frequency transformer protection resistor of claim 5, wherein: the first high-temperature heat insulation pipe (501) and the second high-temperature heat insulation pipe (601) are both arranged in an arc shape, and the arc inner sides of the first high-temperature heat insulation pipe (501) and the second high-temperature heat insulation pipe (601) are symmetrically arranged.