CN201496231U - Protector used for compressor - Google Patents
Protector used for compressor Download PDFInfo
- Publication number
- CN201496231U CN201496231U CN2009202338093U CN200920233809U CN201496231U CN 201496231 U CN201496231 U CN 201496231U CN 2009202338093 U CN2009202338093 U CN 2009202338093U CN 200920233809 U CN200920233809 U CN 200920233809U CN 201496231 U CN201496231 U CN 201496231U
- Authority
- CN
- China
- Prior art keywords
- spring
- adjusting screw
- protector
- bimetallic strip
- compressor
- 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 protector used for a compressor. The protector comprises a housing (1), a bimetallic piece (4), an adjusting screw (5), a spring (7) and compound wiring feet (8), wherein a copper gasket (6) is arranged between the bimetallic piece (4) and the spring (7), the bimetallic piece (4), the copper gasket (6) and the spring (7) are penetrated in sequence by the adjusting screw (5) and the tail end of the adjusting screw (5) is connected with the housing (1); the spring (7) is positioned between the copper gasket (6) and the housing (1); the bimetallic piece (4) closely leans against the head end of the adjusting screw (5) through the elastic force function of the spring (7); two movable contacts are respectively arranged at two ends of the bimetallic piece (4) and are contacted with the static contacts on the compound wiring feet (8). The protector has the advantages of simple structure and reliable performance, and when the current is switched on; the resistance of the copper gasket self can be ignored so as to easily conduct electricity, thereby achieving the purpose of increasing the minimum action current.
Description
Technical field
The utility model relates to a kind of protector, relates in particular to a kind of external protector that is used on air condition compressor, freezer compressor and the compressor that dries.
Background technique
Be used for the external protector on air condition compressor, freezer compressor and the compressor that dries, this type of external protector is the bimetallic strip height that suppresses temperature by adjusting screw adjustment, thereby adjusts protector operating temperature and other performances.
In traditional protector technology, by selecting the bimetallic strip material, promptly its resistance difference is adjusted the electrical quantity in the protector working procedure, reaches the coupling requirement.But in design process, when bulk resistance need be finely tuned, often can't realize.
According to energy theorem: Q=I
2Rt, the energy requirement Q of institute is certain in the upset of the bimetallic strip of protector, and when resistance R reduced, it is big that overcurrent I just becomes, and promptly under the environment provided temperature, protector move and the minimum working current of disconnecting circuit just becomes greatly in scheduled time.Thereby, this be a good problem solution party to.
The model utility content
The purpose of this utility model is: a kind of protector that is used for compressor is provided, and simple in structure, reliable performance; Can reach the purpose that increases minimum working current.
The technical solution of the utility model is: a kind of protector that is used for compressor; it comprises shell, bimetallic strip, adjusting screw, spring, compound wiring pin; be provided with copper washer between described bimetallic strip and the spring; adjusting screw has been gone here and there bimetallic strip, copper washer, spring successively; the tail end of adjusting screw is connected with shell; spring is between copper washer and shell; the elastic force effect of bimetallic strip by spring is near to the adjusting screw head end; the two ends of bimetallic strip are respectively arranged with movable contact, and movable contact contacts with stationary contact on being arranged on compound wiring pin.
The tail end of described adjusting screw stretches out shell, and is connected and fixed by nut and shell.
The two ends of described bimetallic strip are put respectively and are welded with movable contact.
The utility model has the advantages that:
1. the protector that is used for compressor of the present utility model; by increase copper washer between bimetallic strip and spring, when connecting excess current, the copper washer self-resistance can be ignored and easier conduction; thereby whole resistance decreasing can reach the purpose that increases minimum working current.
2. the protector that is used for compressor of the present utility model, simple in structure, reliable performance has promotional value and use value widely.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is the circuit diagram that meets protector of the present utility model;
Fig. 2 is the structural representation of the utility model protector;
Fig. 3 is the assembly schematic representation of movable contact combination and adjusting screw in the utility model protector;
Fig. 4 increases the preceding Resistance Analysis schematic representation of copper washer;
Fig. 5 is the Resistance Analysis schematic representation behind the increase copper washer.
Wherein: 1 shell; 2 movable contacts; 3 cover plates; 4 bimetallic strips; 5 adjusting screw; 6 copper washers; 7 springs; 8 compound wiring pin; 9 nuts; The A current input terminal; The B current output terminal.
Embodiment
Embodiment: as Fig. 2, shown in Figure 3, a kind of protector that is used for compressor, it comprises shell 1, movable contact 2, cover plate 3, bimetallic strip 4, adjusting screw 5, copper washer 6, spring 7, compound wiring pin 8.
Adjusting screw 5 is put on bimetallic strip 4, copper washer 6, spring 7 successively.The tail end of adjusting screw 5 stretches out shell 1, and is connected and fixed by nut 9 and shell 1.Spring 7 is between copper washer 6 and shell 1, and the elastic force effect of bimetallic strip 4 (and copper washer 6) by spring 7 is near to adjusting screw 5 head ends.
The two ends of bimetallic strip 4 are respectively arranged with movable contact 2, and movable contact 2 contacts with stationary contact on being arranged on compound wiring pin 8, thereby contacting of movable contact 2 and stationary contact is the pressure of being adjusted dynamic and static contact by adjusting screw 5 by the height of adjusting bimetallic strip 4.
As shown in Figure 4, performance be the Resistance Analysis that increases before the copper washer, movable contact assemblying body resistance is R=R1+R2+R3.
As shown in Figure 5, performance be the Resistance Analysis that increases behind the copper washer, because of copper washer resistance very I ignoring, and have good electrical conductivity, therefore can deduct resistance R 2, i.e. R '=R1+R3, R '＜R has reduced bulk resistance.
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 mode of execution 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 domain of the present utility model should comprise those conspicuous to those skilled in the art conversion or substitute and remodeling.
Claims (3)
1. protector that is used for compressor; it comprises shell (1); bimetallic strip (4); adjusting screw (5); spring (7); compound wiring pin (8); it is characterized in that: be provided with copper washer (6) between described bimetallic strip (4) and the spring (7); adjusting screw (5) is gone here and there successively bimetallic strip (4); copper washer (6); spring (7); the tail end of adjusting screw (5) is connected with shell (1); spring (7) is positioned between copper washer (6) and the shell (1); the elastic force effect of bimetallic strip (4) by spring (7) is near to adjusting screw (5) head end; the two ends of bimetallic strip (4) are respectively arranged with movable contact (2), and movable contact (2) contacts with stationary contact on being arranged on compound wiring pin (8).
2. the protector that is used for compressor according to claim 1 is characterized in that: the tail end of described adjusting screw (5) stretches out shell (1), and is connected and fixed by nut (9) and shell (1).
3. the protector that is used for compressor according to claim 1 is characterized in that: the two ends of described bimetallic strip (4) are put respectively and are welded with movable contact (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202338093U CN201496231U (en) | 2009-07-27 | 2009-07-27 | Protector used for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202338093U CN201496231U (en) | 2009-07-27 | 2009-07-27 | Protector used for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496231U true CN201496231U (en) | 2010-06-02 |
Family
ID=42439439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202338093U Expired - Fee Related CN201496231U (en) | 2009-07-27 | 2009-07-27 | Protector used for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2009
- 2009-07-27 CN CN2009202338093U patent/CN201496231U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |