CN101459016A - Compressor protector with stable action time - Google Patents
Compressor protector with stable action time Download PDFInfo
- Publication number
- CN101459016A CN101459016A CNA2008102427129A CN200810242712A CN101459016A CN 101459016 A CN101459016 A CN 101459016A CN A2008102427129 A CNA2008102427129 A CN A2008102427129A CN 200810242712 A CN200810242712 A CN 200810242712A CN 101459016 A CN101459016 A CN 101459016A
- Authority
- CN
- China
- Prior art keywords
- spring
- protector
- adjustment screw
- bimetal leaf
- bimetallic strip
- 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.)
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Abstract
The invention discloses a compressor protector with stable action and time, which comprises an outer casing (1), a bimetallic strip (4), an adjusting screw nail (5), a spring (7) and a composite connection pin (8), wherein the adjusting screw nail (5) sequentially penetrates through the bimetallic strip 4) and the spring (7), the tail end of the adjusting screw nail (5) is connected with the outer casing (1), the spring (7) is located between the bimetallic strip (4) and the outer casing (1), the bimetallic strip (4) is tightly arranged against the head end of the adjusting screw nail (5) through the spring action of the spring (7), two ends of the bimetallic strip (4) are respectively equipped with a moving contact (2), the moving contacts (2) are contacted with static contacts arranged on the composite connection pin (8), and a high temperature resistant insulating washer (6) is arranged between the bimetallic strip (4) and the adjusting screw nail (5). The invention is simple in structure and reliable in property, is timely and accurate in action and time to switch off circuit when overload current passes through the protector, and has wide popularization value and use value.
Description
Technical field
The present invention relates to a kind of protector, relate 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.
Summary of the invention
The objective of the invention is: a kind of compressor protector of stable action time is provided, 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.
Technical scheme of the present invention 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.
Advantage of the present invention is:
1. the compressor protector of stable action time of the present invention, 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 invention.Simple in structure, have promotional value and practical value widely.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of protector of the present invention;
Fig. 2 is the assembly schematic diagram of bimetal leaf in the protector of the present invention and adjustment screw.
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 7 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 present invention 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 invention, rather than limitation of the present invention.In a word, protection scope of the present invention 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 |
|---|---|---|---|
| CNA2008102427129A CN101459016A (en) | 2008-12-22 | 2008-12-22 | Compressor protector with stable action time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102427129A CN101459016A (en) | 2008-12-22 | 2008-12-22 | Compressor protector with stable action time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101459016A true CN101459016A (en) | 2009-06-17 |
Family
ID=40769794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102427129A Pending CN101459016A (en) | 2008-12-22 | 2008-12-22 | Compressor protector with stable action time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101459016A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010821A (en) * | 2016-11-01 | 2018-05-08 | 江苏常胜电器股份有限公司 | Sensitive-type overcurrent protector |
| CN114188185A (en) * | 2021-11-18 | 2022-03-15 | 创维电器股份有限公司 | Timing switch circuit of mechanical direct-cooling single-system refrigerator |
-
2008
- 2008-12-22 CN CNA2008102427129A patent/CN101459016A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010821A (en) * | 2016-11-01 | 2018-05-08 | 江苏常胜电器股份有限公司 | Sensitive-type overcurrent protector |
| CN114188185A (en) * | 2021-11-18 | 2022-03-15 | 创维电器股份有限公司 | Timing switch circuit of mechanical direct-cooling single-system refrigerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090617 |