CN201336257Y - Compressor protector with stable action time - Google Patents
Compressor protector with stable action time Download PDFInfo
- Publication number
- CN201336257Y CN201336257Y CNU2008202149580U CN200820214958U CN201336257Y CN 201336257 Y CN201336257 Y CN 201336257Y CN U2008202149580 U CNU2008202149580 U CN U2008202149580U CN 200820214958 U CN200820214958 U CN 200820214958U CN 201336257 Y CN201336257 Y CN 201336257Y
- Authority
- CN
- China
- Prior art keywords
- spring
- adjustment screw
- protector
- bimetal leaf
- action time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a compressor protector with stable action time, which comprises a housing (1), a bimetallic strip (4), an adjusting screw (5), a spring (7) and a compound connection pin (8). The adjusting screw (5) sequentially passes through the bimetallic strip (4) and the spring (7); the tail end of the adjusting screw (5) is connected with the housing (1); the spring (7) is arranged between the bimetallic strip (4) and the housing (1); the bimetallic strip (4) is abutted against the head end of the adjusting screw (5) by means of the elasticity of the spring; traveling contacts (2) are respectively arranged at the two ends of the bimetallic strip (4); the traveling contacts (2) are in contact with a stationary contact on the compound connection pin (8); and a high-temperature resisting insulating washer (6) is arranged between the bimetallic strip (4) and the adjusting screw (5). The utility model has the advantages of simple structure, reliable performance, and wide popularization value and utility value; in addition, when overload current passes through the protector, the action that the circuit is cut off is timely and accurate.
Description
Technical field
The utility model relates to a kind of protector, relates in particular to a kind of compressor protector that is used for the stable action time of the external on compressor of air conditioner, freezer compressor and the compressor that dries.
Background technology
Be used for the external protector on compressor of air conditioner, freezer compressor and the compressor that dries; particularly comprise adjustment screw, bimetal leaf, packing ring and spring in the protector; this type of external protector is the bimetal leaf height that suppresses temperature by adjustment screw adjustment, thereby adjusts protector operating temperature and other performances.
The problem that exists in the protector of prior art is that when logical certain overload current, can not be consistent the operate time of protector.Its reason is that the head of screw of adjustment screw is directly to contact with bimetal leaf, and adjustment screw has conductivity, thereby makes head of screw resistance in the adjustment screw influence the stability of protector, in use, influences the function of use of product.
According to energy theorem: Q=I
2Rt, certain at the bimetal leaf upset energy requirement Q of institute of protector, it is constant that overload current I keeps; so, when resistance R is stablized, can safety action time t constant; thereby under compressor overload situation,, can play the effect of protection compressor at official hour internal cutting off circuit.(ST is the performance of protector, when flowing by live, and the operate time of bimetal leaf).
In order to make protector when leading to certain overload current, be consistent the operate time of protector, and it is stable that the resistance between dynamic and static contact must keep.
And for the protector of prior art; because bimetal leaf directly contacts with the head of screw of the adjustment screw with conductivity; in the protector course of work; increased the resistance and the contact resistance of head of screw, and the resistance instability, promptly when bimetal leaf moves; can rotate around shank of screw; after bimetal leaf recovered, resistance can change owing to head of screw changes with the bimetal leaf contact site, thereby can not guarantee the resistance stabilization between dynamic and static contact.Finally cause compressor protector instability operate time, that is: ST characteristic instability.
The utility model content
The purpose of this utility model is: a kind of compressor protector of stable action time is provided, and simple in structure, dependable performance; When overload current passed through protector, the operate time of circuitry cuts promptly and accurately; Have promotional value and practical value widely.
The technical solution of the utility model is: a kind of compressor protector of stable action time; it comprises shell; bimetal leaf; adjustment screw; spring; compound leg; described adjustment screw is put on bimetal leaf successively; spring; the tail end of adjustment screw is connected with shell; spring is between bimetal leaf and shell; the elastic force effect of bimetal leaf by spring is near to the adjustment screw head end; the two ends of bimetal leaf are respectively arranged with moving contact; moving contact contacts with fixed contact on being arranged on compound leg, is provided with insulating washer between described bimetal leaf and the adjustment screw.
Like this, before and after the bimetal leaf action, head of screw and bimetal leaf keep state of insulation, just can not influence the resistance stabilization between the dynamic and static contact of bimetal leaf, and when having overcurrent to pass through, operate time is also just basicly stable, that is: the ST stability of characteristics.
The tail end of described adjustment screw stretches out shell, and is connected and fixed by nut and shell.
Screw-threaded coupling is also by gluing fixing between described adjustment screw and the nut.
Described insulating washer is the high-temperature insulation packing ring.
The utility model has the advantages that:
1. the compressor protector of stable action time of the present utility model, dependable performance; When overload current passed through protector, the operate time of circuitry cuts promptly and accurately.
2. the compressor protector of stable action time of the present utility model.Simple in structure, have promotional value and practical value widely.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of the utility model protector;
Fig. 2 is the assembly schematic diagram of bimetal leaf and adjustment screw in the utility model protector.
Wherein: 1 shell; 2 moving contacts; 3 cover plates; 4 bimetal leafs; 5 adjustment screw; 6 insulating washers; 7 springs; 8 compound leg; 9 nuts.
Embodiment
Embodiment: as shown in Figure 1 and Figure 2, a kind of compressor protector of stable action time, it comprises shell 1, moving contact 2, cover plate 3, bimetal leaf 4, adjustment screw 5, high-temperature insulation packing ring 6, spring 7, compound leg 8.
Adjustment screw 5 is put on insulating washer 6, bimetal leaf 4, spring 7 successively, and the head of screw of adjustment screw 5 and bimetal leaf 4 are insulated packing ring 6 and separate, thereby have avoided the contact resistance of head of screw and bimetal leaf and the resistance of head of screw, makes properties of product stable.
The tail end of adjustment screw 5 stretches out shell 1, and is connected and fixed by nut 9 and shell 1.
The two ends of bimetal leaf 4 are respectively arranged with moving contact 2, moving contact 2 contacts with fixed contact on being arranged on compound leg 8, the precompression of the fixed contact on moving contact 2 and the compound leg 8 is regulated by adjustment screw 5, also plays the effect of regulating operate time simultaneously; After regulating operate time, screw-threaded coupling and be adhesively fixed by epoxy glue between nut 9 and the adjustment screw 5 is to determine the protector contact time.
Should be pointed out that for the utility model also to have the embodiment of multiple conversion and remodeling, be not limited to the specific embodiment of above-mentioned execution mode through proving absolutely.The foregoing description is as just explanation of the present utility model, rather than to restriction of the present utility model.In a word, protection range of the present utility model should comprise those conspicuous to those skilled in the art conversion or substitute and remodeling.
Claims (4)
1. the compressor protector of a stable action time; it comprises shell (1); bimetal leaf (4); adjustment screw (5); spring (7); compound leg (8); described adjustment screw (5) is put on bimetal leaf (4) successively; spring (7); the tail end of adjustment screw (5) is connected with shell (1); spring (7) is positioned between bimetal leaf (4) and the shell (1); the elastic force effect of bimetal leaf (4) by spring (7) is near to adjustment screw (5) head end; the two ends of bimetal leaf (4) are respectively arranged with moving contact (2); moving contact (2) contacts with fixed contact on being arranged on compound leg (8), it is characterized in that: be provided with insulating washer (6) between described bimetal leaf (4) and the adjustment screw (5).
2. the compressor protector of stable action time according to claim 1, it is characterized in that: the tail end of described adjustment screw (5) stretches out shell (1), and is connected and fixed by nut (9) and shell (1).
3. the compressor protector of stable action time according to claim 2 is characterized in that: screw-threaded coupling and by gluing fixing between described adjustment screw (5) and the nut (9).
4. the compressor protector of stable action time according to claim 1, it is characterized in that: described insulating washer (6) is the high-temperature insulation packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202149580U CN201336257Y (en) | 2008-12-22 | 2008-12-22 | Compressor protector with stable action time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202149580U CN201336257Y (en) | 2008-12-22 | 2008-12-22 | Compressor protector with stable action time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336257Y true CN201336257Y (en) | 2009-10-28 |
Family
ID=41287917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202149580U Expired - Fee Related CN201336257Y (en) | 2008-12-22 | 2008-12-22 | Compressor protector with stable action time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201336257Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937794A (en) * | 2010-08-31 | 2011-01-05 | 苏州华旃航天电器有限公司 | Protector wiring pin with exquisite structure |
| CN102005335A (en) * | 2010-11-30 | 2011-04-06 | 苏州华旃航天电器有限公司 | Movable contact in external protector |
| CN102568929A (en) * | 2012-02-09 | 2012-07-11 | 上海航天科工电器研究院有限公司 | External compressor protector |
-
2008
- 2008-12-22 CN CNU2008202149580U patent/CN201336257Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937794A (en) * | 2010-08-31 | 2011-01-05 | 苏州华旃航天电器有限公司 | Protector wiring pin with exquisite structure |
| CN102005335A (en) * | 2010-11-30 | 2011-04-06 | 苏州华旃航天电器有限公司 | Movable contact in external protector |
| CN102568929A (en) * | 2012-02-09 | 2012-07-11 | 上海航天科工电器研究院有限公司 | External compressor protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20111222 |