CN208479498U - A kind of starter with defencive function - Google Patents
A kind of starter with defencive function Download PDFInfo
- Publication number
- CN208479498U CN208479498U CN201821093172.8U CN201821093172U CN208479498U CN 208479498 U CN208479498 U CN 208479498U CN 201821093172 U CN201821093172 U CN 201821093172U CN 208479498 U CN208479498 U CN 208479498U
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- ptc chip
- thermal fuse
- starter
- terminal
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Abstract
The utility model discloses a kind of starters with defencive function; including box cover and shell; box cover and shell are involutory next formation internal cavity; cavity is built-in with a PTC chip and multiple external terminals; shell inner spring terminal and the second horn mouth terminal are respectively placed in PTC chip two sides and are connected electrically; the other end of spring terminal connects thermal fuse-link one end; the other end of thermal fuse-link connects the first horn mouth terminal and N-terminal; the thermal fuse-link and PTC chip constitute series circuit, and thermal fuse-link and PTC chip are mounted in above-mentioned cavity.Described device composed structure is simple, at low cost；When unusual service condition makes PTC chip generate abnormal high temperature, thermal cut-off can cut off circuit in time, effectively prevent PTC chip is chipping to lead to short circuit, and equipment is avoided therefore to catch fire and cause other safety accidents.
Description
Technical field
The utility model relates to a kind of protective device of electrical equipment more particularly to a kind of compressors with defencive function
Starter.
Background technique
Existing compressor PTC starter is used for the refrigerator of household and similar applications, and PTC starter has positive temperature
The thermal resistor for spending characteristic, is serially connected on the auxiliary winding of compressor, the posive temperature coefficient thermistor using PTC starter exists
Small resistance value on state is under room temperature.When compressor electric motor, which is powered, to be started, electric current flows through thermal resistor and connects compressor
Starting circuit starts compressor electric motor.Moment is started in compressor electric motor, the electric current for flowing through thermistor reaches its resistance
High resistant state of value reduces compressor auxiliary winding electric current, compressor electric motor is made to enter normal condition.
PTC starter in practical applications, if power grid is unstable or electrical equipment operation process in there are abnormal conditions,
Limit tolerance range beyond thermal resistor；When PTC chip ruptures short circuit, part is still connected with circuit, the positive temperature of resistor
Characteristic failure will occur continuing heating power phenomenon；Fragmentation contacts position and sparking, phenomenon of arc discharge occurs；The temperature-sensitive electricity of fragmentation at this time
Extreme temperatures are hindered, starter shell will appear phenomenon on fire, or even the refrigerator that can ignite, and cause fire.
Utility model content
The utility model provides a kind of PTC starter with defencive function that can effectively solve the problem that starter hidden danger on fire,
To improve equipment safety performance.
A kind of starter with defencive function described in the utility model, including box cover and shell, box cover are involutory with shell
Next formation internal cavity, cavity are built-in with a PTC chip and multiple external terminals, shell inner spring terminal and the second horn mouth
Terminal is respectively placed in PTC chip two sides and is connected electrically, and the other end of spring terminal connects thermal fuse-link one end, thermal fuse-link
The other end connect the first horn mouth terminal and N-terminal, the thermal fuse-link and PTC chip composition series circuit, thermal fuse-link
It is mounted in above-mentioned cavity with PTC chip.
Temperature is substantially invariable when the PTC chip works normally, and the condition of PTC chip fracture is more than nominal resistance to electricity
When the operating condition of pressure, PTC chip meeting abnormal heating, the operating temperature of thermal fuse-link generates Curie point compared with PTC chip and is higher than 30
DEG C, guarantee PTC starter in normal work, thermal fuse-link is not in accidentally to protect.Work as circuit abnormality, PTC chip temperature meeting
It steeply rises, abnormal calorific value is by heat transfer to thermal fuse-link.At this time in cavity with the concatenated thermal fuse-link energy of PTC chip
Rapid temperature-sensitive movement occurs the preceding cutting circuit in time of fracture in PTC chip, PTC chip is avoided to be broken.
The spring terminal for being placed in two lateral electrode of PTC chip and the second horn mouth terminal are staggeredly mutually set and have all welded one
A elastic slice, PTC chip apply pressure fixing from two sides by elastic slice.
Described device structure is simple, at low cost；When there is unusual service condition, PTC chip is sharply generated heat, and heat leads to heat transfer
To thermal fuse-link, thermal fuse-link can cut off circuit in time, and thermal fuse-link once motion will not reply, and PTC core is effectively reduced
The probability of piece fracture, avoids hidden danger on fire.
Detailed description of the invention
Fig. 1 is the starter structural schematic diagram with defencive function.
Fig. 2 is the starter explosive view with defencive function.
Fig. 3 is structure chart in the starter housing with defencive function.
Fig. 4 is the starter box cover structure chart with defencive function.
Fig. 5 is that the starter thermal fuse-link with defencive function is mounted on PTC chip bottom schematic view.
Fig. 6 is that the starter thermal fuse-link with defencive function is mounted on PTC chip bottom sectional view.
Fig. 7 is that the starter thermal fuse-link with defencive function is mounted on PTC chip schematical top view.
Fig. 8 is that the starter thermal fuse-link level with defencive function is adjacent to the top view for being mounted on PTC chip side.
Fig. 9 is that the starter thermal fuse-link with defencive function is adjacent to the top view being mounted on the left of PTC chip vertically.
Figure 10 is that the starter thermal fuse-link with defencive function is adjacent to the top view being mounted on the right side of PTC chip vertically.
Figure 11 is the starter circuit figure one with defencive function.
Figure 12 is the starter circuit figure two with defencive function.
Specific embodiment
Embodiment one
As shown in Fig. 1,2,3,4,11, a kind of starter with defencive function described in the utility model, by box cover (8) and
Shell (7) composition, placed PTC chip (1), thermal fuse-link (4) and multiple external terminals, the external terminal in the shell
One end in shell, outside the prominent shell of the other end, be used as external connection.Wherein three terminals are respectively D terminal (9), N-terminal
Sub (10) and L terminal (11).Limit card slot is equipped in shell, be used to compartment of terrain place PTC chip (1), thermal fuse-link (4) and
Multiple external terminals.
The starter with defencive function, wherein one end of the first horn mouth terminal (2) and thermal fuse-link (4) is electrically connected
Connect, thermal fuse-link (4) other end is electrically connected with spring terminal (3), spring terminal (3) is electrically connected with PTC chip (1) side, PTC
Chip (1) other side is electrically connected with the second horn mouth terminal (5), forms series circuit.In shell the first horn mouth terminal (2) with
One end of thermal fuse-link (4) connection is also electrically connected with N-terminal (10).The thermal fuse-link (4) is close to being installed on PTC chip (1)
Side, the distance between thermal fuse-link and PTC chip be less than 5mm, and the fever of PTC chip exception can pass to hot melt by heat
Disconnected body.
There are temperature differences with thermal fuse-link operating temperature for temperature when PTC chip works normally, heat disconnected operating temperature
Curie point is generated compared with PTC chip and is higher than 30 DEG C, guarantees PTC chip starter in normal work, thermal fuse-link will not go out
Now accidentally protect.
The compressor PTC chip starter, two ceramic inserts are set to PTC chip two sides.Ceramic insert is for limiting
Position clamping PTC chip, ceramic insert have high high temperature resistant and high-voltage resistance capability.
Second horn mouth terminal of the PTC chip two sides has all welded elastic slice with spring terminal and has staggeredly mutually set, described
PTC chip applies pressure fixing from two sides by elastic slice and inserts.When PTC chip failure fracture immediately occurred when, elastic slice with
Ceramic insert is that fulcrum exerts a force from the other side, and elastic slice can flick dehiscence part, play the role of breaking.The elastic slice is not
Can flick the PTC chip fragment of fragmentation, part is shorted, in the case where persistent fever, thermal fuse-link also can timely action protection, prevent
Only hidden danger on fire.
Embodiment two
As shown in Figure 5 and Figure 6, thermal fuse-link is close to the bottom for being mounted on PTC chip, between thermal fuse-link and PTC chip
Distance be less than 1mm.Wherein the first horn mouth terminal (2) is electrically connected with one end of thermal fuse-link (4), and thermal fuse-link (4) is another
End is electrically connected with spring terminal (3) one end.Spring terminal (3) other end is electrically connected with PTC chip (1) side, PTC chip (1)
The other side is electrically connected with the second horn mouth terminal (5), constitutes series circuit.Its structural wiring is clear, with the concatenated heat of PTC chip
The rapid temperature-sensitive movement of the physical efficiency that fuses, cuts off circuit in time.
Embodiment three
As shown in fig. 7, thermal fuse-link is close to the top for being mounted on PTC chip, the distance between thermal fuse-link and PTC chip
Less than 1mm.Wherein the first horn mouth terminal (2) be electrically connected with one end of thermal fuse-link (4), thermal fuse-link (4) other end and bullet
The electrical connection of spring terminal (3) one end, spring terminal (3) other end are electrically connected with PTC chip (1) side, PTC chip (1) other side
It is electrically connected with the second horn mouth terminal (5), constitutes series circuit.Its structural wiring is clear, with the concatenated thermal fuse-link of PTC chip
It temperature-sensitive can act rapidly, cut off circuit in time.
Example IV
As shown in figs. 8 and 12, the starter with defencive function, thermal fuse-link level, which is adjacent to, is placed in PTC chip one
The direct contact surface in side, using thermal fuse-link surface metal as fixed electrode, series connection is accessed in entire circuit.Thermal fuse-link
The other end connects the second horn mouth terminal, and the PTC chip other side connects the first horn mouth terminal and N-terminal, the first flared end
Son and N-terminal have all welded elastic slice and have been electrically connected with the abutting of PTC chip electrode.The thermal fuse-link surface metal is as electrode level
It is adjacent to PTC chip, the heat of abnormal heating effectively can pass to thermal fuse-link, thermal fuse-link energy when PTC chip fails
The circuit of movement cutting in time, plays the role of the entire circuit of protection.
Embodiment five
As shown in figure 9, the starter with defencive function, thermal fuse-link is adjacent to that be placed in PTC chip side direct vertically
Contact surface enters in entire circuit as electrode series connection.Thermal fuse-link is mounted on the left of PTC chip, one end of thermal fuse-link
The second horn mouth terminal is connected, thermal fuse-link surface metal is adjacent to PTC chip side as electrode vertically.The PTC chip other side
N-terminal is connected, N-terminal is connect with the first horn mouth terminal simultaneously, and N-terminal has welded elastic slice and PTC chip electrode pushes against
It is connected thereto energization.Ceramic insert is mounted on first horn mouth terminal the same side and staggeredly mutually sets with thermal fuse-link, at this time PTC core
Piece is acted on by 3 power.Described device can also play certain protecting effect in structure, and PTC chip fails after fragmentation immediately
It can play the role of because that can not clamp breaking.For the thermal fuse-link surface metal as electrode securement PTC chip, PTC chip is different
The heat often to generate heat effectively can pass to thermal fuse-link, and thermal fuse-link can act cutting circuit in time, and it is whole to play protection
The effect of a circuit.
Embodiment six
As shown in Figure 10, the starter with defencive function, thermal fuse-link are adjacent to that be placed in PTC chip side direct vertically
Contact surface enters in entire circuit as electrode series connection.Thermal fuse-link is mounted on the right side of PTC chip, and thermal fuse-link one end connects
The first horn mouth terminal and N-terminal are connect, thermal fuse-link surface metal is adjacent to PTC chip side as electrode vertically.PTC chip is another
Side connects the second horn mouth terminal, and the second horn mouth terminal has welded elastic slice and has been electrically connected with the abutting of PTC chip electrode with it
It connects.Ceramic insert is mounted on the second horn mouth terminal side and staggeredly mutually sets with thermal fuse-link, and PTC chip is by 3 power at this time
Effect, described device can also play certain protecting effect in structure, can be because that can not clamp after PTC chip failure fragmentation immediately
And play the role of breaking.The thermal fuse-link surface metal is as electrode securement PTC chip, the heat of PTC chip abnormal heating
Thermal fuse-link effectively can be passed to, thermal fuse-link can act cutting circuit in time, play the role of the entire circuit of protection.
Claims (7)
1. a kind of starter with defencive function, including box cover (8) and shell (7), box cover (8) are involutory next with shell (7)
Internal cavity is formed, cavity is built-in with a PTC chip (1) and multiple external terminals, which is characterized in that shell (7) inner spring end
Sub (3) and the second horn mouth terminal (5) are respectively placed in PTC chip (1) two sides and are connected electrically, spring terminal (3) it is another
End connection thermal fuse-link (4) one end, the other end of thermal fuse-link (4) connect the first horn mouth terminal (2) and N-terminal (10), institute
It states thermal fuse-link (4) and PTC chip (1) and constitutes series circuit, thermal fuse-link (4) and PTC chip (1) are mounted on above-mentioned cavity
It is interior.
2. a kind of starter with defencive function according to claim 1, which is characterized in that spring terminal (3) and second
An elastic slice (12), elastic slice (12) and PTC chip (1) electricity are all welded in one end of horn mouth terminal (5) connection PTC chip (1)
Pole offsets and connects energization.
3. a kind of starter with defencive function according to claim 1, which is characterized in that thermal fuse-link (4) is placed in
PTC chip (1) bottom or top or side, the distance between thermal fuse-link (4) and PTC chip (1) are less than 5mm.
4. a kind of starter with defencive function according to claim 1, which is characterized in that thermal fuse-link (4) is placed in
PTC chip (1) bottom or top or side, the distance between thermal fuse-link (4) and PTC chip (1) are less than 1mm.
5. a kind of starter with defencive function according to claim 1, which is characterized in that thermal fuse-link (4) and PTC core
The side of piece (1) is adjacent to, and using thermal fuse-link surface metal as fixed electrode, is connected to PTC chip (1), and series connection access is entire
In circuit.
6. a kind of starter with defencive function according to claim 1, which is characterized in that there is more than one insulation to inlay
It is opposite with other side elastic slice that inserts (6) is mounted on PTC chip (1) side.
7. a kind of starter with defencive function according to claim 6, which is characterized in that the insulation inserts (6)
For ceramic insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821093172.8U CN208479498U (en) | 2018-07-11 | 2018-07-11 | A kind of starter with defencive function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821093172.8U CN208479498U (en) | 2018-07-11 | 2018-07-11 | A kind of starter with defencive function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208479498U true CN208479498U (en) | 2019-02-05 |
Family
ID=65210139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821093172.8U Active CN208479498U (en) | 2018-07-11 | 2018-07-11 | A kind of starter with defencive function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208479498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667350A (en) * | 2018-07-11 | 2018-10-16 | 广州森宝电器股份有限公司 | A kind of starter with defencive function |
-
2018
- 2018-07-11 CN CN201821093172.8U patent/CN208479498U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667350A (en) * | 2018-07-11 | 2018-10-16 | 广州森宝电器股份有限公司 | A kind of starter with defencive function |
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