CN210040058U - Protector structure with mechanical arm for refrigeration compressor - Google Patents
Protector structure with mechanical arm for refrigeration compressor Download PDFInfo
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- CN210040058U CN210040058U CN201920786238.XU CN201920786238U CN210040058U CN 210040058 U CN210040058 U CN 210040058U CN 201920786238 U CN201920786238 U CN 201920786238U CN 210040058 U CN210040058 U CN 210040058U
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- protector
- mechanical arm
- temperature
- arm
- fuse
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Abstract
The utility model discloses a protector structure of mechanical arm for refrigeration compressor, including casing, heating element, bimetallic strip, movable contact, stationary contact, arm and fuse, movable contact fixed connection is in the one end of arm, and the other end of arm is installed on the casing, and stationary contact fixed connection is in the casing with the corresponding position department of movable contact on the casing, and in the casing was located to heating element, the below of arm, heating element's top were located to the bimetallic strip, and the fuse is established ties at work circuitIn which the fuse is set to a fusing temperature TdThe bimetallic strip is set with an operating temperature T0And a recovery temperature T1Fusing temperature TdGreater than the operating temperature T0. When taking place electric short circuit or protector self when the extreme condition such as breaking down, even make movable contact and stationary contact still be in the closed condition, the utility model discloses the protector also can be in time, open circuit permanently to can effectively avoid the emergence of unexpected circumstances such as compressor trouble, burning on fire, reach the purpose of protection safety.
Description
Technical Field
The utility model belongs to the technical field of the compressor technology and specifically relates to a compressor is with protector structure of taking arm with permanent broken circuit function.
Background
A protector having overload, overcurrent, and overtemperature protection functions is commonly used in a refrigeration compressor applied to a refrigeration appliance. Fig. 1 shows a protector structure for a conventional refrigeration compressor, which includes a housing 1, a heating element 2, a bimetal 3, a movable contact 4, a stationary contact 5 and a mechanical arm 6, wherein the movable contact 4 is fixed on the mechanical arm 6, and the mechanical arm 6 is mounted on the housing 1. Referring to fig. 2, when the refrigeration compressor starts to work, the movable contact 4 and the fixed contact 5 of the protector are in contact, the working circuit of the refrigeration compressor is in a closed state, current flows through the heating element 2 of the protector, the temperature of the heating element 2 rises, heat is diffused to the periphery by the heating element 2, the temperature of the protector rises, and the temperature of the bimetallic strip 3 also gradually rises. As shown in fig. 3 and 4, when the bimetal 3 of the protector is increased in temperature, it is gradually deformed by heat. When the temperature of the bimetallic strip 3 reaches or exceeds the set operating temperature T0When the double-metal sheet 3 is deformed and overturned, the mechanical arm 6 drives the movable contact 4 to be separated from the fixed contact 5, and a circuit is disconnected, so that the refrigeration compressor and the refrigeration appliance thereof are protected. Due to the physical properties of the bimetal itself, the bimetal 3 recovers when the temperature drops to its set valueComplex temperature T1When the circuit is turned over again, the mechanical arm 6 drives the movable contact 4 to contact the fixed contact 5 again, so that the circuit is closed again. Therefore, the protector with the bimetallic strip structure is a protector with an automatic recovery function, and has the characteristics of simple structure, low cost and the like. However, in some specific extreme situations, such as when an electrical short circuit occurs or the protector itself fails, the temperature of the protector rises sharply, but the movable contact 4 and the fixed contact 5 are still in a closed state, and the circuit cannot be completely opened in time, so that the situations of compressor failure, fire burning and the like occur.
Disclosure of Invention
The utility model aims to solve the technical scheme that a protection ware structure of taking the arm for the compressor of the off-circuit in time, permanently when taking place specific situations such as electric short circuit, protector self trouble is put forward.
In order to solve the technical problem, the utility model relates to a protector structure of mechanical arm for refrigeration compressor includes casing, heating element, bimetallic strip, movable contact, stationary contact, arm and fuse, movable contact fixed connection in the one end of arm, the other end of arm install in on the casing, stationary contact fixed connection in on the casing with the corresponding position department of movable contact, heating element locates in the casing, bimetallic strip locates the below of arm heating element's top, the fuse is established ties in working circuit, the fuse is set for one fusing temperature TdThe bimetal is set with an operating temperature T0And a recovery temperature T1The fusing temperature TdGreater than the operating temperature T0。
The fusing temperature T of the protector structure with the mechanical arm for the refrigeration compressordThe temperature range of (A) is 150-800 ℃.
The protector structure with the mechanical arm for the refrigeration compressor is provided with one or more heating elements.
According to the protector structure with the mechanical arm for the refrigeration compressor, one or more bimetallic strips are arranged.
The protector structure with the mechanical arm for the refrigeration compressor is provided with one or more fuses.
The utility model discloses owing to adopted above-mentioned technical scheme, when taking place the extreme condition such as electric short circuit or protector self breaks down, and when leading to the inside temperature of protector to rise sharply, even make the movable contact and the stationary contact of protector still be in the closed condition, nevertheless owing to establish ties the fuse in the working circuit, the fuse reaches the fusing temperature T of settlement because of the temperaturedAnd the circuit is timely fused and permanently disconnected, so that the accidents of compressor failure, fire burning and the like are effectively avoided, and the purpose of safety protection is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a conventional protector with a mechanical arm for a refrigeration compressor in a contact closed state;
FIG. 2 is a schematic diagram of the circuit relative to FIG. 1;
fig. 3 is a schematic structural view of a conventional protector with a mechanical arm for a refrigeration compressor in a contact disconnection state;
FIG. 4 is a schematic diagram of the circuit relative to FIG. 3;
fig. 5 is a schematic structural view of the mechanical arm protector for a refrigeration compressor according to the present invention in a contact closed state;
FIG. 6 is a schematic diagram of the circuit relative to FIG. 5;
fig. 7 is a schematic structural view of the mechanical arm protector for a refrigeration compressor according to the present invention in a contact disconnection state;
FIG. 8 is a schematic diagram of the circuit relative to FIG. 7;
fig. 9 is a schematic structural view of the mechanical arm protector for the refrigeration compressor according to the present invention when the contacts are closed and the fuse is in a fused state;
fig. 10 is a schematic diagram of the circuit relative to fig. 9.
Detailed Description
As shown in FIG. 5, the protector structure with mechanical arm for refrigeration compressor of the present invention comprises a housing 1, a feeding deviceThermal element 2, bimetallic strip 3, movable contact 4, stationary contact 5, arm 6 and fuse 7, movable contact 4 fixed connection is in the one end of arm 6, the other end of arm 6 is installed on casing 1, stationary contact 5 fixed connection is in casing 1 and the position department that corresponds with movable contact 4, heating element 2 is located in casing 1, bimetallic strip 3 is located the below of arm 6, the top of heating element 2, fuse 7 establishes ties in the operating circuit, fuse 7 has a fusing temperature T according to compressor's operation operating mode to be set for in 150 ~ 800 ℃ temperature rangedThe bimetal 3 is set with an operating temperature T0And a recovery temperature T1Fusing temperature TdGreater than the operating temperature T of the bimetallic strip 30. The heating element 2, the bimetal 3 and the fuse 7 may be provided with one or more as required.
As shown in fig. 6, when the refrigeration compressor normally operates, the movable contact 4 and the fixed contact 5 of the protector are in contact, the operating circuit of the refrigeration compressor is in a closed state, current flows through the heating element 2 and the fuse 7 of the protector, the temperature of the heating element 2 rises, heat is diffused to the surroundings by the heating element 2, the temperature of the protector rises, and the temperature of the bimetal 3 also gradually rises.
As shown in fig. 7 and 8, when the refrigeration compressor is normally operated, the bimetal 3 is gradually thermally deformed when the temperature rises. When the temperature of the bimetallic strip 3 reaches or exceeds the set operating temperature T1When the double-metal sheet 3 is deformed and overturned, the mechanical arm 6 drives the movable contact 4 to be separated from the fixed contact 5, and a circuit is disconnected, so that the refrigeration compressor and the refrigeration appliance thereof are protected. Because the fusing temperature T set by the fuse 7 is not reached when the refrigeration compressor normally worksdThe fuse 7 does not blow.
As shown in fig. 9 and 10, when the protector is suddenly raised in temperature due to an electrical short circuit or a failure of the protector itself, the fuse 7 reaches a predetermined fusing temperature T even though the movable contact 4 and the stationary contact 5 of the protector are closeddAnd fusing in time and permanently disconnecting the circuit, thereby effectively avoiding the occurrence of accidents such as compressor failure, fire burning and the like, and achieving the protectionAnd 4, safety.
Claims (5)
1. The protector structure with the mechanical arm for the refrigeration compressor comprises a shell, a heating element, a bimetallic strip, a movable contact, a fixed contact and a mechanical arm, wherein the movable contact is fixedly connected to one end of the mechanical arm, the other end of the mechanical arm is installed on the shell, the fixed contact is fixedly connected to the position, corresponding to the movable contact, on the shell, the heating element is arranged in the shell, the bimetallic strip is arranged below the mechanical arm and above the heating element, the protector structure is characterized by further comprising a fuse, the fuse is connected in a working circuit in series, and the fuse is set to have a fusing temperature TdThe bimetal is set with an operating temperature T0And a recovery temperature T1The fusing temperature TdGreater than the operating temperature T0。
2. Protector arrangement with mechanical arm for refrigeration compressors according to claim 1, characterized in that said fusion temperature TdThe temperature range of (A) is 150-800 ℃.
3. A protector structure with a mechanical arm for a refrigeration compressor according to claim 1 or 2, characterized in that said heating element is provided with one or more.
4. A protector structure with a mechanical arm for a refrigeration compressor according to claim 1 or 2, characterized in that said bimetallic strip is provided with one or more.
5. A protector structure with a mechanical arm for a refrigeration compressor according to claim 1 or 2, characterized in that said fuse is provided with one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920786238.XU CN210040058U (en) | 2019-05-28 | 2019-05-28 | Protector structure with mechanical arm for refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920786238.XU CN210040058U (en) | 2019-05-28 | 2019-05-28 | Protector structure with mechanical arm for refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210040058U true CN210040058U (en) | 2020-02-07 |
Family
ID=69345005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920786238.XU Active CN210040058U (en) | 2019-05-28 | 2019-05-28 | Protector structure with mechanical arm for refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210040058U (en) |
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2019
- 2019-05-28 CN CN201920786238.XU patent/CN210040058U/en active Active
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