CN107103977A

CN107103977A - A kind of power transformer

Info

Publication number: CN107103977A
Application number: CN201710468504.XA
Authority: CN
Inventors: 叶孟淼
Original assignee: ZHEJIANG DELIXI ELECTRICAL Co Ltd
Current assignee: ZHEJIANG DELIXI ELECTRICAL Co Ltd
Priority date: 2017-06-20
Filing date: 2017-06-20
Publication date: 2017-08-29
Anticipated expiration: 2037-06-20
Also published as: CN107103977B

Abstract

The invention discloses a kind of power transformer, including housing；Detection module, in the chamber of housing, with can automatic identification input voltage and send voltage conversion instruction converting unit, and according to output voltage judge input voltage overvoltage progress high frequency flicker alarm or under-voltage carry out low frequency flicker alarm judgement alarm unit；Transformer body, for performing conversion instruction that converting unit sends to realize the conversion of voltage in the chamber of housing and with detection module electrically or signal is connected；Above-mentioned power transformer is identified and judged to input voltage by the detection module being connected with transformer body, is realized the automated intelligent conversion of power transformer high voltage and low-voltage each other, can thus be made electric appliance general in domestic and international voltage standard；Also, detection module carries out high frequency flicker alarm or under-voltage carry out low frequency flicker alarm in input voltage overvoltage, enable users to timely to find above-mentioned power transformer input voltage whether be power transformer standard nominal input voltage.

Description

A kind of power transformer

Technical field

The present invention relates to transformer technology field, and in particular to a kind of power transformer.

Background technology

In recent years, with the rise of the buying patterns such as Hai Tao, tourist shopping, increasing foreign countries' electrical equipment enters domestic, But the voltage overwhelming majority for the electrical equipment that foreign countries buy does not meet China's voltage standard, or travels or go on business abroad When, the voltage for the domestic electrical equipment carried with there may be difference with external voltage, if foreign electrical equipment directly is connected into I Domestic electrical equipment is connected external power supply and may result in electrical equipment and normal work or even can not burnt out by the power supply of state.

Therefore, prior art such as Chinese patent literature CN205230786U discloses a kind of electricity with short-circuit protection function Source transformer, it includes housing, located at enclosure interior and the toroidal transformer with input lead and output end lead, with it is defeated Enter to hold the lead plug electrically connected, the socket electrically connected with output end lead, controlling switch.

However, the prior art can not still solve in actual use domestic and international electrical equipment due to voltage standard it is different without Can be general the problem of, reason is, the conversion for realizing high voltage-low-voltage that the toroidal transformer of the prior art can only be single Or low-voltage-high-tension conversion, and home and abroad environment is contrasted, most external voltage standards and domestic voltage mark It is accurate different, it is high or low, if improper use during artificial selection uses power transformer, it can play and run counter to desire Effect.

The content of the invention

It is therefore an object of the present invention to which providing a kind of can make electric appliance general in the power supply transformation of domestic and international voltage standard Device.

A kind of power transformer, including

Housing；

Detection module, in the chamber of the housing, with automatic identification input voltage and voltage conversion can be sent referring to The converting unit of order, and judge that input voltage overvoltage carries out high frequency flicker alarm or under-voltage carry out low frequency sudden strain of a muscle according to output voltage The judgement alarm unit of bright alarm；

Transformer body, in the chamber of the housing and with the detection module electrically or signal be connected, for holding The conversion instruction that the row converting unit is sent by the input voltage to be converted to rated output voltage.

It is preferred that, the detection module is the circuit board for being arranged on the transformer body side.

It is preferred that, the housing includes the base and upper shell being detachably connected, and the upper shell is connected with the base The chamber is formed, the transformer body is arranged on the cavity bottom with the detection module；The base is provided with and institute State transformer body first heat emission hole corresponding with the detection module.

It is preferred that, in addition to located at the plug assembly for appliance plug grafting of the chamber, the upper shell it is remote End face from the base is the fitting surface that forms installation opening, and the plug assembly is connected to described by the first interface arrangment At installation opening.

It is preferred that, in addition to for being connected the positioning transformation between the transformer body and the plug assembly The fixed plate of device body and the plug assembly, the outer rim of the fixed plate is connected in the chamber by the second interface arrangment Wall.

It is preferred that, the fixed plate is polygonized structure, shape between the polygonized structure and the inwall of the upper shell Into the heat transfer for the transformer body to be produced to the heat dissipation channel on the chamber top.

It is preferred that, the base is circle, and the upper shell is the conical structure that bottom opening is adapted to the base.

It is preferred that, second interface arrangment includes some barbs for being symmetricly set in the upper enclosure inner wall, and shaping In the fixed plate is with respect to both sides and is provided with the raised line of the groove being caught in suitable for the barb.

It is preferred that, the transformer body is connected by first fixed structure with the base, the first fixed structure It is provided for preventing the transformer body from rocking including taking shape on the base, along the periphery of the transformer body lower end It is first raised, and take shape in the fixed plate towards the transformer body upper end side, with first male cooperation Further fix the transformer body second is raised.

It is preferred that, indicator lamp is provided with the upper shell, the indicator lamp is connected to the circuit board, and it can be according to defeated The height for going out voltage shows red light or blue lamp, according to the under-voltage or over-pressed progress low frequency of input voltage or the flicker of high frequency Alarm.

It is preferred that, first interface arrangment include taking shape in the junction of the fitting surface and the plug assembly and Some projections being oppositely arranged, and the relatively described raised position of the plug assembly is taken shape in, it is provided with suitable for the projection The slotted eye being caught in.

It is preferred that, the power transformer also includes being arranged at the shell on the outside of the fitting surface by the second fixed structure Lid, the cap forms setting of being alignd with the installation opening, is connected to the plug assembly by the electricity for plug insertion Five hole jacks of electrical equipment described in voltage output after the transformer conversion of source.

It is preferred that, the fitting surface forms some second heat emission holes, the cap towards the side of the fitting surface into Type has to be formed and described second on the bulge loop fitted in the cap and upper shell connection with the fitting surface, the bulge loop Heat emission hole coordinates the heat transfer in the power transformer to outside, is connected with the fitting surface and to form the 3rd of hole and dissipate Hot hole.

It is preferred that, it is provided between the fitting surface and the cap for preventing children from passing through five hole jack contact To the protection door of the plug assembly.

It is preferred that, the junction of the base and the upper shell is provided with the Outlet line for accessing supply voltage.

Technical solution of the present invention, has the following advantages that：

1. the power transformer that the present invention is provided, including housing；Detection module, in the chamber of housing, with energy certainly Move identified input voltage and simultaneously send the converting unit of voltage conversion instruction, and judge that input voltage is crossed according to output voltage and be pressed into Row high frequency flicker is alarmed or the under-voltage judgement alarm unit for carrying out low frequency flicker alarm；Transformer body, located at the chamber of housing It is interior and with detection module electrically or signal is connected, for performing conversion instruction that converting unit sends to convert input voltage into Rated output voltage；Above-mentioned power transformer is carried out automatic by the detection module being connected with transformer body to input voltage Identification and judgement, conversion instruction is sent when recognizing input voltage for high voltage makes transformer body progress high voltage-low electricity The conversion of pressure, conversion instruction is sent when recognizing input voltage for low-voltage makes transformer body progress low-voltage-high voltage Conversion, i.e., by power transformer input voltage can be carried out high voltage or low-voltage each other automated intelligent identification and Conversion, so can be achieved with electric appliance general in domestic and international voltage standard, without using the power supply transformation of two different switching functions Device；Also, detection module can judge whether input voltage is over-pressed or under-voltage according to the output voltage of power transformer, if over-pressed High frequency flicker alarm is then sent, low frequency flicker alarm is sent if under-voltage, such user just can be directly perceived outside power transformer Acquisition power transformer work state information, and can timely find above-mentioned power transformer input voltage whether be electricity The nominal input voltage of source transformer standard, or transformer body failure.

2. the power transformer that the present invention is provided, housing includes the base and upper shell being detachably connected, upper shell and bottom Seat connection forms chamber, and transformer body is arranged on cavity bottom with detection module；Upper shell bottom is provided with and transformer body First heat emission hole corresponding with detection module；Housing is arranged to dismountable base and upper shell, is easy to in chamber zero Part is installed, and is connected base and upper shell after installation, rapid and convenient；Above-mentioned first heat emission hole be in order to Transformer body and detection module are radiated, overheat in power transformer is prevented.

3. the power transformer that the present invention is provided, in addition to located at the plug assembly for appliance plug grafting of chamber, The end face of the remote base of upper shell is the fitting surface for forming installation opening, and plug assembly is connected to dress by the first interface arrangment At mouth；Above-mentioned plug assembly is connected at installation opening by the first interface arrangment, and operating personnel can be made convenient from upper casing Plug assembly is connected at the installation opening of fitting surface at the opening that body is connected with base.

4. the power transformer that the present invention is provided, in addition to for being connected fixed between transformer body and plug assembly The fixed plate of position transformer body and plug assembly, the outer rim of fixed plate is connected in chamber inner wall by the second interface arrangment；On State fixed plate and chamber inner wall is connected in by the second interface arrangment, this structure is easy to operating personnel to be connected from upper shell with base Opening at fixed plate is loaded to the inwall of upper shell, and can be securely attached on inwall.

5. the power transformer that the present invention is provided, transformer body is connected by first fixed structure with base, first consolidates Determine structure includes taking shape on base, being provided for preventing transformer body from rocking along the periphery of transformer body lower end first Projection, and fixed plate is taken shape in towards the side of transformer body upper end and the further stationary transformer sheet of the first male cooperation The second of body is raised；Above-mentioned transformer body is by the first projection positioned at transformer body lower end and on transformer body Second projection at end is firmly fixed in chamber, and shock is received even if power transformer will not also shake.

6. the power transformer that the present invention is provided, power transformer also includes being arranged at fitting surface by the second fixed structure The cap in outside, cap forms setting of being alignd with installation opening, is connected to plug assembly by power transformer for plug insertion Five hole jacks of the voltage output electrical equipment after conversion；Above-mentioned cap is arranged at the outside of fitting surface, can be effectively protected and cover The plug assembly at installation opening is connected to, prevents from getting an electric shock or leaks electricity.

7. the power transformer that the present invention is provided, fitting surface forms some second heat emission holes, and cap is towards fitting surface Side forms to form on the bulge loop fitted with fitting surface in cap and upper shell connection, bulge loop to be coordinated with the second heat emission hole By the heat transfer in power transformer to it is outside, be connected to form the 3rd heat emission hole of hole with fitting surface；Above-mentioned second radiating Hole and the 3rd heat emission hole are engaged with heat dissipation channel, and the heat that transformer body and detection module are produced is logical through radiating successively Road, the second heat emission hole and the 3rd heat emission hole go out outside out of chamber by the upper guide of power transformer.

8. the power transformer that the present invention is provided, is provided between fitting surface and cap for preventing children from being inserted by five holes Hole touches the protection door of plug assembly；This structure can prevent children from getting electric shock, and prevent dust, foreign matter etc. from falling into plug assembly It is interior.

Brief description of the drawings

, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.

The explosive view for the power transformer that Fig. 1 provides for the present invention；

The structural representation for the power transformer that Fig. 2 provides for the present invention；

Fig. 3 is the main sectional view shown in Fig. 2；

Fig. 4 is the internal structure schematic diagram shown in Fig. 2；

Fig. 5 is the structural representation of the base shown in Fig. 2；

Description of reference numerals：1- bases, 11- first is raised, the heat emission holes of 12- first, the screw holes of 13- first, 14- supports Post, 2- upper shells, 21- fitting surfaces, 22- barbs, 23- indicator lamps, 24- Outlet lines, the flights of 25- first, 211- installation openings, The heat emission holes of 212- second, the screw holes of 213- second, 3- caps, the hole jacks of 31- five, 32- bulge loops, the heat emission holes of 33- the 3rd, 4- transformations Device body, 5- plug assemblys, 51- slotted eyes, 52- copper piece components, the screw holes of 53- the 3rd, 6- fixed plates, 61- second is raised, 62- Raised line, 7- detection modules, 8- protection doors.

Embodiment

Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.

In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ", The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.

In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.

As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other It can just be combined with each other into conflict.

Embodiment

As shown in figure 1, a kind of power transformer, including housing；Detection module 7, in the chamber of the housing, has Energy automatic identification input voltage and the converting unit for sending voltage conversion instruction, and the input electricity is judged according to output voltage Press through the judgement alarm unit for carrying out high frequency flicker alarm or under-voltage carry out low frequency flicker alarm；Transformer body 4, located at institute State in the chamber of housing and with the detection module 7 electrically or signal is connected, for performing described in the converting unit sends Conversion instruction by the input voltage to be converted to rated output voltage；In the present embodiment, the input voltage is the electricity The voltage of the power transformer is inputted after the transformer access supply voltage of source, generally, the input voltage is energy Make the nominal input voltage of the power transformer normal work, i.e., default input voltage, and the rated output voltage is Default output voltage；In addition, the present embodiment is that the input voltage is judged according to the output voltage of the power transformer With the presence or absence of under-voltage or overvoltage, such case can be by due to the output voltage caused by the failure of transformer body 4 Change is included, and enables users to timely find due to the output voltage exception caused by transformer body 4 and handle.

Above-mentioned power transformer is entered by the detection module being connected with the transformer body to the input voltage Row automatically recognizes and judgement that sending the conversion instruction when recognizing the input voltage for high voltage makes the transformer Body carries out the conversion of high voltage-low-voltage, and sending the conversion instruction when recognizing the input voltage for low-voltage makes The transformer body carries out low-voltage-high-tension conversion, will the power transformer input voltage can be carried out The automated intelligent identification and conversion of high voltage or low-voltage each other, so can be achieved with electric appliance general in domestic external voltage Standard, without using the power transformer of two different switching functions；Also, the detection module can be according to the power supply transformation The output voltage of device judges whether the input voltage is over-pressed or under-voltage, and high frequency flicker alarm is sent if overvoltage, if It is under-voltage, low frequency flicker alarm is sent, such user just can intuitively obtain the power supply transformation outside the power transformer The work state information of device, and can timely find whether the input voltage of above-mentioned power transformer is the power supply transformation The nominal input voltage of device standard, or the failure of the transformer body 4.

Further, the detection module 7 is the circuit board for being arranged on the side of transformer body 4；Set on the circuit Being equipped with can be by the relay of conversion signal automatic switching circuit；The circuit board is passed through using screw and is molded over the circuit board On screw hole, and the flight for the support column 14 being arranged on the base 1 is fixed on the side of the transformer body 4.

Further, as depicted in figs. 1 and 2, the housing includes the base 1 and upper shell 2 being detachably connected, the upper casing Body 2 is connected to form the chamber with the base 1, and the transformer body 4 is arranged on the chamber bottom with the detection module 7 Portion；The base 1 is provided with first heat emission hole 12 corresponding with the transformer body 4 and the detection module 7；By the shell Body is arranged to the dismountable base 1 and upper shell 2, is easy to install parts in the chamber, and installation The base 1 and upper shell 2 are connected afterwards, rapid and convenient；Above-mentioned first heat emission hole 12 is in order to the transformer sheet Body 4 and detection module 7 are radiated, and prevent overheat in the power transformer.

In addition, first heat emission hole 12 includes setting round heat emission hole along the base 1 and the junction of upper shell 2 and divided Linear pattern heat emission hole of the cloth in the bottom of base 1；The bottom of base 1 is additionally provided with for anti-skidding slipmat.

Further, the base 1 and upper shell 2 are by taking shape in around the base 1 and the junction of upper shell 2 Some first screw holes 13, take shape in the upper shell 2 first flight 25 corresponding with first screw hole 13, and pass through First screw hole 13 is fixedly connected with the screw of the first flight 25.

Further, in addition to located at the plug assembly 5 for appliance plug grafting of the chamber, the upper shell 2 End face away from the base 1 is the fitting surface 21 for forming installation opening 211, and the plug assembly 5 passes through the first interface arrangment It is connected at the installation opening 211；Above-mentioned plug assembly 5 is connected at the installation opening 211 by first interface arrangment, Operating personnel can be made easily will to be connected to the plug assembly 5 at the opening that the upper shell 2 is connected with the base 1 At the installation opening 211 of the fitting surface 21；Copper piece component 52 is provided with the plug assembly 5.

Further, as shown in Figure 3 and Figure 4, in addition between the transformer body 4 and the plug assembly 5 use In the fixed plate 6 of the linking positioning transformer body 4 and the plug assembly 5, the outer rim of the fixed plate 6 passes through the second card Binding structure is connected in the chamber inner wall；Above-mentioned fixed plate 6 is connected in the chamber inner wall by second interface arrangment, this Planting structure is easy to operating personnel to load the fixed plate 6 on described at the opening that the upper shell 2 is connected with the base 1 The inwall of housing 2, and can be securely attached on the inwall of upper shell 2.

Further, the fixed plate 6 is polygonized structure, between the polygonized structure and the inwall of the upper shell 2 Form the heat dissipation channel to the chamber top for the heat transfer for producing the transformer body 4；It is above-mentioned by described solid Fixed board 6 and the heat dissipation channel of chamber inner wall formation can be used to pass to the heat that the transformer body 4 and detection module 7 are produced To the top of the chamber, and the wire of the transformer body 4 can be accommodated through being electrically connected with the plug assembly 5.

Further, the base 1 is circle, and the upper shell 2 is the cone knot that bottom opening is adapted to the base 1 Structure；This construction profile is attractive in appearance, and compact conformation is, it is necessary to which explanation, this is the preferred scheme of the present embodiment, in other implementations Also other shapes structure may be selected in example.

Further, some barbs 22 of second interface arrangment including being symmetricly set in the inwall of upper shell 2, and into Type is in the fixed plate 6 is with respect to both sides and is provided with the raised line 62 of the groove being caught in suitable for the barb 22；Above-mentioned second clamping The cooperation for the groove on the barb 22 and fixed plate 6 that structure passes through the inwall of upper shell 2 is firm by the fixed plate 6 The inwall for snapping fit onto the upper shell 2 in jail, does not fall out, and operates facility, during installation, only need to be by the fixed plate 6 The groove is directed at the barb 22 and is caught in.

Further, as shown in Figure 3 and Figure 5, the transformer body 4 is connected by first fixed structure with the base 1, The first fixed structure includes taking shape on the base 1, being provided for preventing along the periphery of the lower end of transformer body 4 The first projection 11 that the transformer body 4 is rocked, and the fixed plate 6 is taken shape in towards the upper end of transformer body 4 Side and the described first projection 11 coordinate the second projection 61 for further fixing the transformer body 4；Above-mentioned transformer body 4 pass through first projection 11 positioned at the lower end of transformer body 4 and described the positioned at the upper end of transformer body 4 Two projections 61 are firmly fixed in the chamber, and shock is received even if the power transformer will not also shake；Separately Outside, first projection 11 and the second projection 61 are formed by some combination of protrusions, not fixed shape and structure, as long as energy Realize the positioning to the transformer body 4.

Further, as shown in Fig. 2 being provided with indicator lamp 23 on the upper shell 2, the indicator lamp 23 is connected to the electricity Road plate, it can show red light in the power transformer output voltage high voltage, blue lamp is shown during low-voltage, in the input Low frequency flicker is carried out during under-voltage, high frequency flicker is carried out when over-pressed；Above-mentioned indicator lamp 23 can intuitively reflect the power supply The working condition of transformer, the indicator lamp 23 shows red light when the power transformer carries out low-voltage-high voltage conversion, Carry out showing blue lamp during high voltage-low voltage transition, when input voltage overvoltage, the indicator lamp 23 carries out high frequency flicker, When the input voltage is under-voltage, the indicator lamp 23 carries out low frequency flicker, and user can be directly perceived from the state of the indicator lamp 23 The work state information of the power transformer is solved, can in time be taken measures when the input voltage is under-voltage or over-pressed, The electrical equipment for avoiding the power transformer from burning out or electrically connected with the power transformer is damaged.In addition, judging the input Under-voltage or the scope of overvoltage are ± 10%.

For example：Now the power transformer to be accessed to external supply voltage abroad using domestic electric equipment, Assuming that the indicator lamp 23 shows red light, exceed -10% when the nominal input voltage is under-voltage, then the indicator lamp 23 is in red light Low frequency flicker is carried out under state, when nominal input voltage overvoltage exceedes+10%, then the indicator lamp 23 is under red light phase Carry out high frequency flicker.

Further, first interface arrangment include taking shape in the junction of the fitting surface 21 and the plug assembly 5, And some projections being oppositely arranged, and take shape in the relatively described raised position of the plug assembly 5 and be provided with suitable for described convex Act the slotted eye 51 being caught in；This structure can realize the quick clamping of the docking apparatus and the fitting surface 21, facilitate operator Member installs.

Further, the power transformer also includes the shell that the outside of fitting surface 21 is arranged at by the second fixed structure Lid 3, the cap 3 forms setting of being alignd with the installation opening 211, is connected to the general of plug assembly 5 for plug insertion Five hole jacks 31 of electrical equipment described in voltage output after the power transformer conversion；Above-mentioned cap 3 is arranged at the fitting surface 21 outside, can be effectively protected and cover the plug assembly 5 being connected at the installation opening 211, prevent get an electric shock or Electric leakage.

Specifically, second fixed structure, which includes alignment respectively, takes shape in the plug assembly 5 and the fitting surface 21 The 3rd screw hole 53 and the 4th screw hole 213 of the fitting surface 21 of the plug assembly 5 of junction, take shape in the shell Lid 3 and corresponding second flight of the 4th screw hole 213, and sequentially pass through the 3rd screw hole 53, the 4th screw hole 213 and second flight screw.

Further, the fitting surface 21 forms some second heat emission holes 212, and the cap 3 is towards the fitting surface 21 Side form on the bulge loop 32 fitted with the fitting surface 21 in the cap 3 and the connection of upper shell 2, the bulge loop 32 Form and coordinate with second heat emission hole 212 by the heat transfer in the power transformer to the outside and fitting surface The 21 connection heat emission holes 33 of shape the 3rd；The above-mentioned heat emission hole 33 of second heat emission hole 212 and the 3rd is engaged with heat dissipation channel, is become described The heat that depressor body 4 and detection module 7 are produced is successively through the heat dissipation channel, the second heat emission hole 212 and the 3rd heat emission hole 33 Outside is gone out by the upper guide of the power transformer out of described chamber.

Further, some lamp holes for installing ornament lamp are additionally provided with the fitting surface 21, the decoration of circuit is connected The light of lamp can be cast out from the 3rd heat emission hole 33, particularly at night, add viewing and admiring for the power transformer Property.

Further, it is provided between the fitting surface 21 and the cap 3 for preventing children from passing through five hole jack 31 touch the protection door 8 of the plug assembly 5；This structure can prevent children from getting electric shock, and prevent dust, foreign matter etc. from falling into institute State in plug assembly 5.

Further, the junction of the base 1 and the upper shell 2 is provided with the Outlet line for accessing supply voltage 24。

Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims

1. a kind of power transformer, it is characterised in that including

Housing；

Detection module (7), in the chamber of the housing, with can automatic identification input voltage and send voltage conversion instruction Converting unit, and judge that input voltage overvoltage carries out high frequency flicker alarm or under-voltage carry out low frequency according to output voltage Flash the judgement alarm unit of alarm；

Transformer body (4), in the chamber of the housing and with the detection module (7) electrically or signal be connected, be used for Perform the conversion instruction that the converting unit sends the input voltage is converted into rated output voltage.

2. power transformer according to claim 1, it is characterised in that the detection module (7) is to be arranged on the change The circuit board of depressor body (4) side.

3. power transformer according to claim 1 or 2, it is characterised in that the housing includes the bottom being detachably connected Seat (1) and upper shell (2), the upper shell (2) are connected to form the chamber with the base (1), the transformer body (4) The cavity bottom is arranged on the detection module (7)；The base (1) is provided with and the transformer body (4) and described Corresponding the first heat emission hole (12) of detection module (7).

4. power transformer according to claim 3, it is characterised in that also including being inserted in the chamber for electrical equipment The plug assembly (5) of head grafting, the end face of the remote base (1) of the upper shell (2) is to form installation opening (211) Fitting surface (21), the plug assembly (5) is connected to the installation opening (211) place by the first interface arrangment.

5. power transformer according to claim 4, it is characterised in that also including located at the transformer body (4) with It is used to be connected the positioning transformer body (4) and the fixed plate (6) of the plug assembly (5) between the plug assembly (5), The outer rim of the fixed plate (6) is connected in the chamber inner wall by the second interface arrangment.

6. power transformer according to claim 5, it is characterised in that the fixed plate (6) is polygonized structure, described The heat transfer for the transformer body (4) to be produced is formed between the inwall of polygonized structure and the upper shell (2) To the heat dissipation channel on the chamber top.

7. the power transformer according to any one of claim 3-6, it is characterised in that the base (1) is circle, institute It is the conical structure that bottom opening is adapted to the base (1) to state upper shell (2).

8. power transformer according to claim 5, it is characterised in that second interface arrangment includes being symmetricly set in Some barbs (22) of upper shell (2) inwall, and take shape in the fixed plate (6) with respect to both sides and be provided with suitable for institute State the raised line (62) for the groove that barb (22) is caught in.

9. according to any described power transformers of claim 1-7, it is characterised in that the transformer body (4) passes through the One fixed structure is connected with the base (1), and the first fixed structure includes taking shape on the base (1), become along described The periphery of depressor body (4) lower end is provided for first raised (11) for preventing the transformer body (4) from rocking, and takes shape in The fixed plate (6) coordinates further fixed towards the side of the transformer body (4) upper end, with described first raised (11) The second of the transformer body (4) is raised (61).

10. power transformer according to claim 2, it is characterised in that be provided with indicator lamp on the upper shell (2) (23), the indicator lamp (23) is connected to the circuit board, and it can be aobvious according to the power transformer high voltage or low-voltage Show red light or blue lamp, the input voltage is under-voltage or it is over-pressed when send low frequency flicker or high frequency flicker.

11. power transformer according to claim 4, it is characterised in that first interface arrangment includes taking shape in institute Some projections stated the junction of fitting surface (21) and the plug assembly (5) and be oppositely arranged, and take shape in the grafting dress Put (5) relatively described raised position and be provided with the slotted eye (51) being caught in suitable for the projection.

12. power transformer according to claim 1, it is characterised in that the power transformer also includes passing through second Fixed structure is arranged at the cap (3) on the outside of the fitting surface (21), and the cap (3) forms and the installation opening (211) Alignment sets, is connected to the voltage output institute after the plug assembly (5) changes the power transformer for plug insertion State five hole jacks (31) of electrical equipment.

13. power transformer according to claim 4, it is characterised in that the fitting surface (21) forms some second Heat emission hole (212), the cap (3) is formed in the cap (3) and upper shell (2) towards the side of the fitting surface (21) The bulge loop (32) fitted during connection with the fitting surface (21), the bulge loop (32) forms and second heat emission hole (212) Coordinate the heat transfer for producing the transformer body (4) to be connected formation the 3rd to outside, with the fitting surface (21) to radiate Hole (33).

14. power transformer according to claim 13, it is characterised in that the fitting surface (21) and the cap (3) Between be provided with for prevent children by five hole jack (31) touch the plug assembly (5) protection door (8).

15. power transformer according to claim 1, it is characterised in that the base (1) and the upper shell (2) Junction is provided with the Outlet line (24) for accessing supply voltage.