CN101996823A - Built-in single-lead compressor protector - Google Patents
Built-in single-lead compressor protector Download PDFInfo
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- CN101996823A CN101996823A CN 201010526792 CN201010526792A CN101996823A CN 101996823 A CN101996823 A CN 101996823A CN 201010526792 CN201010526792 CN 201010526792 CN 201010526792 A CN201010526792 A CN 201010526792A CN 101996823 A CN101996823 A CN 101996823A
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- fixed
- protector
- contact
- bimetal leaf
- terminal pin
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Abstract
The invention discloses a built-in single-lead compressor protector. The protector comprises a pedestal, a shell, a ceramic plate, a fixed contact, a movable contact and a lead pin, and is characterized in that the ceramic plate is fixed on the pedestal, wherein the lead pin passes through the ceramic plate and the pedestal and is fixed on the pedestal; one end of a fixed bracket is close to the ceramic plate, and the other end of the fixed bracket is fixed on the lead pin; the fixed contact is fixed at one end of the fixed bracket close to the ceramic plate; one end of a bimetallic strip is fixed on the shell, and the other end of the bimetallic strip is provided with the movable contact; the movable contact is positioned above the fixed contact and contacted with the fixed contact; and the shell is fixed on the pedestal to form a closed entire body. The compressor protector provided by the invention has a small size and a compact structure and reduces the number of parts and welding steps, thereby reducing the manufacturing cost and improving the product reliability.
Description
Technical field the present invention relates to a kind of protector, particularly a kind of compressor that is applicable to middle low power air-conditioning, refrigerator, dehumidifier etc. because of abnormal operating state produces overheated or overload carry out built-in single terminal pin compressor protector of reliable temperature current duplicate protection.
The background technology compressor protector is a kind of device to automatically replying behind overheat of compressor or the automatic overload protection.Protector is according to the temperature of coil and the size variation of motor current; with the bimetal leaf behind the temperature-sensitive as thermal reaction element, when the compressor non-normal working along with electric current and compressor coil temperature be increased to set temperature value the time, bimetallic element starts rapidly; open the contact, cut off the electricity supply.The contact auto-closing recovers the policy operating state when bimetallic element is cooled to safe temperature, and this has the double protection of electric current and temperature to compressor.
Compressor protector mainly is divided into built-in and external at present.Built-in compressor protector is installed on compressor inside with it; adopt the totally-enclosed structure,, can promptly and accurately sense the temperature of compressor coil applicable to multiple environment; prevent situations such as compressor scaling loss, at the built-in protector of the general employing of some crucial occasions.Present most of built-in protector structure such as Fig. 1; it adopts two terminal pins 17; comprise base 23, heater strip 21, moving support 19, quiet support 13, bimetal leaf 18, moving contact 15, fixed contact 14, bonding pad 20, two potsherds 16, housing 22, this structure has the following disadvantages:
1. protector structure complexity, the part of this kind structure are many, need 12 parts altogether, cause the volume of protector bigger, and manufacturing cost is higher, and the present cost of built-in compressor protector on the market generally is 2 times of external protector.
2. welding sequence is many, and the welding assembly reliability is poor.The assembling overwhelming majority of protector is finished by welding; this structure assembling needs 8 road welding procedures altogether; particularly the welding procedure of bimetal leaf and moving support is poor; because the material of the temperature-sensing element bimetal leaf of protector generally all is to adopt the very high alloy of copper content; Cu alloy material in the industry cycle all is the welding material that is difficult for of generally acknowledging; and the bimetal leaf of temperature protector is generally all extremely thin; generally has only 0.1 millimeter; it is big to cause welding between bimetal leaf and support difficulty; easily cause welding not measure, badly influence the reliability of built-in protector.
Because built-in compressor protector is installed in compressor inside; can not change; this just requires it must possess high reliability; built-in protector volume conference simultaneously is subjected to the restriction of inner space, thereby the built-in protector of this structure is subjected to the restriction of these problems in use too at present.
Summary of the invention is in order to solve the deficiency that above-mentioned built-in compressor protector exists; the present invention proposes a kind of new built-in compressor protector structure; can simplify protector structure, reduce the requirement of welding assembly technology, improve protector reliability, reduce protector volume, simplify cost, make it be applicable to more occasions widely.
The objective of the invention is to adopt following technical scheme to realize:
A kind of built-in single terminal pin compressor protector; it comprises base; housing; ceramic wafer; fixed contact; moving contact; terminal pin; it is characterized in that: described ceramic wafer is fixed on the base; terminal pin passes ceramic wafer and base and is fixed on the base; quiet support one end is close on the ceramic wafer; the other end of quiet support is fixed on the terminal pin; fixed contact is fixed on the end that quiet support is close to ceramic wafer; bimetal leaf one end is fixed on the housing; the other end of bimetal leaf is provided with moving contact; this moving contact is positioned at the fixed contact top and contacts with fixed contact, and housing is fixed on the base and forms a sealed whole body.
The present invention realizes by following approach: terminal pin passes behind the ceramic wafer by glass sintering and base and ceramic wafer and fixes and form insulation; Quiet support Design is dull and stereotyped folding shape structure, be provided with the breach that matches with the terminal pin cross sectional shape with the terminal pin welding ends, welding location with convenient quiet support and terminal pin, the end that quiet support is close to ceramic wafer is a welding plane, fixed contact is welded on this welding plane, dams in the middle of the quiet support partly can be provided with different in width or thickness to adapt to the demand of different resistances; Moving contact is arranged on the bimetal leaf and the corresponding end of fixed contact, and the bimetal leaf other end is fixing with the housing welding by the weldering nail, seals with the base welding around the housing.
To be electric current flow into (going out) and be serially connected in the compressor circuit from the mode that metal shell flows out (going into) from terminal pin the operation principle of this structural defence device, and electric current can produce heat when flowing through quiet support, bimetal leaf.When compressor circuit under the non-normal working situation, reach certain value as electric current, when the heat that the accumulation of quiet support and bimetal leaf produces has reached the kick temperature of bimetal leaf,, cut off circuit just kick takes place bimetal leaf; In addition; when compressor circuit during at non-normal working temperature too high; heat can conduct to bimetal leaf by the protector metal shell; if the accumulation heat that exterior conductive heat and quiet support, bimetal leaf electric current produce reaches the kick temperature of bimetal leaf; bimetal leaf generation kick is cut off circuit.Thereby realized the temperature current double protection functions of protector.
Compressor protector provided by the invention and existing built-in compressor protector relatively have following advantage:
1. small product size is little, compact conformation.Volume has only 1/2 of at present general built-in compressor protector volume, therefore can be applicable to multiple compressor.
2. number of spare parts and welding sequence have been reduced.This kind protector structure has reduced a terminal pin, moving support, heater strip, and potsherd, and the one-piece parts size is also corresponding to be reduced, welding sequence is reduced to 5 roads by 8 roads, thereby manufacturing cost reduces.
3. soldering reliability height, the special mode of utilizing weldering nail one end center convex closure to pass the location hole of bimetal leaf realizes welding, avoided moving support directly with the welding of bimetal leaf, the assembly difficulty reduction has improved reliability.
Description of drawings Fig. 1 is traditional built-in compressor protector structural representation;
Fig. 2 is the structure cutaway view of the built-in single terminal pin compressor protector of the present invention;
Fig. 3 is the plan structure schematic diagram of quiet support among the present invention;
Fig. 4 is the main TV structure schematic diagram of quiet support among the present invention;
Fig. 5 be among the present invention ceramic wafer look up structural representation;
Fig. 6 is the main TV structure schematic diagram of ceramic wafer among the present invention;
Fig. 7 is the main TV structure schematic diagram of assembling of quiet support and fixed contact, ceramic wafer, terminal pin and base among the present invention;
Fig. 8 is the assembling plan structure schematic diagram of quiet support and fixed contact, ceramic wafer, terminal pin and base among the present invention;
Fig. 9 is the structural representation of bimetal leaf among the present invention;
Figure 10 is the plan structure schematic diagram of weldering nail among the present invention;
Figure 11 is the main TV structure schematic diagram of weldering nail among the present invention;
Figure 12 is a bimetal leaf and the main TV structure schematic diagram of assembling that welds nail and housing among the present invention;
Figure 13 is that Figure 12 A-A is to cross-sectional view.
Description of reference numerals
The quiet support 5a-of the 1-base 1c-hole 2-housing 3-fixed contact 4-moving contact 5-arc gap 5b-moving support 20-bonding pad 21-heater strip 22-housing 23-base of the quiet support 14-of the part 5c-welding plane 6-bimetal leaf 6a-welding location hole 7-weldering nail little convex closure 7b-of the 7a-big convex closure 8-terminal pin 9-ceramic wafer 9a-cylindric convex closure 9c-hole 13-of groove 9b-fixed contact 15-moving contact 16-potsherd 17-terminal pin 18-bimetal leaf 19-that dams
Embodiment is further described the specific embodiment of the present invention below in conjunction with drawings and Examples:
As shown in Figure 2; the single terminal pin compressor protector of the present invention; comprise base 1; housing 2; fixed contact 3; moving contact 4; quiet support 5; bimetal leaf 6; weldering nail 7; terminal pin 8 and ceramic wafer 9; ceramic wafer 9 is fixed on the base 1; terminal pin 8 passes ceramic wafer 9 and base 1 and is fixed together and forms insulation by glass sintering and base 1 and ceramic wafer 9; quiet support 5 one ends are close on the ceramic wafer 9; the other end of quiet support 5 is welded on the terminal pin 8; fixed contact 3 is welded on the end that quiet support 5 is close to ceramic wafer 9; bimetal leaf 6 one ends are fixing with housing 2 welding by weldering nail 7; the other end of bimetal leaf 6 is welded with the moving contact 4 that reliably contacts and exist certain pressure with fixed contact 3, seals with base 1 welding around the housing 2.
As shown in Figure 3, Figure 4, quiet support 5 is the heating resistor material of dull and stereotyped folding shape structure, is generally copper alloy, ferroalloy etc., and an end side surface has arc gap 5a, and the arc gap shape matches with terminal pin 8, is more suitable for welding and location with terminal pin 8; The part 5b that dam in the middle of the quiet support 5 can be provided with different in width or thickness to adapt to the demand of different resistances; The end that quiet support 5 is close to ceramic wafer 9 is a welding plane 5c, and fixed contact 3 is welded on the 5c of this welding plane.
See also shown in Fig. 5,6, ceramic wafer 9 one ends are provided with a hole 9c and have a plurality of cylindric convex closure 9b, and convex closure embeds in glass can form reliable sintering; Other end top is provided with groove 9a, and quiet support 5 one ends that are welded with fixed contact 3 are close on the groove 9a face.As Fig. 7, shown in Figure 8, terminal pin 8 passes the hole 9c on the ceramic wafer 9 and ceramic wafer 9 is had in the hole 1c that cylindric convex closure 9b partly places base 1, fixes by glass sintering, and makes base 1 and terminal pin 8 form insulation.
Bimetal leaf 6 one ends are provided with a welding location hole 6a as shown in Figure 9, and weldering nail 7 passes this location hole 6a and housing 2 welding are fixing, the other end welding moving contact 4 of bimetal leaf 6.
Weldering nail 7 is provided with 6 less convex closure 7a and the big convex closure 7b in center shown in Figure 10,11.
Shown in Figure 12,13, weldering nail 7 center convex closure 7b pass the bimetal leaf 6 that has welding location hole 6a and are welded to connect with housing 2, peripheral little convex closure 7a on the weldering nail 7 and bimetal leaf 6 welding, weldering nail 7, bimetal leaf 6 are just finished connection by welding between housing 2.
Claims (1)
1. built-in single terminal pin compressor protector; it comprises base; housing; ceramic wafer; fixed contact; moving contact; terminal pin; it is characterized in that: described ceramic wafer (9) is fixed on the base (1); terminal pin (8) passes ceramic wafer (9) and base (1) and is fixed on the base (1); quiet support (5) one ends are close on the ceramic wafer (9); the other end of quiet support (5) is fixed on the terminal pin (8); fixed contact (3) is fixed on the end that quiet support (5) is close to ceramic wafer (9); bimetal leaf (6) one ends are fixed on the housing (2); the other end of bimetal leaf (6) is provided with moving contact (4); this moving contact (4) is positioned at fixed contact (3) top and contacts with fixed contact (3), and housing (2) is fixed on base (1) and goes up and form a sealed whole body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010526792 CN101996823A (en) | 2010-10-30 | 2010-10-30 | Built-in single-lead compressor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010526792 CN101996823A (en) | 2010-10-30 | 2010-10-30 | Built-in single-lead compressor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101996823A true CN101996823A (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010526792 Pending CN101996823A (en) | 2010-10-30 | 2010-10-30 | Built-in single-lead compressor protector |
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| CN (1) | CN101996823A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611926A (en) * | 2017-09-15 | 2018-01-19 | 珠海格力电器股份有限公司 | A kind of overload protection arrangement, method, storage medium, compressor and electrical equipment |
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| CN101090045A (en) * | 2006-05-12 | 2007-12-19 | 森萨塔科技公司 | Thermally responsive electrical switch |
| CN101339863A (en) * | 2008-08-07 | 2009-01-07 | 宝应电器厂 | PTC ceramic heat protector |
| CN101414746A (en) * | 2007-10-19 | 2009-04-22 | 森萨塔科技公司 | Current protector |
| CN201252050Y (en) * | 2008-07-28 | 2009-06-03 | 匡法荣 | Built-in type protector of a compressor |
| CN201449943U (en) * | 2009-04-29 | 2010-05-05 | 江苏常胜电器有限公司 | Manual reset protector |
| CN201522965U (en) * | 2009-10-12 | 2010-07-07 | 匡法荣 | Current temperature dual protector |
| CN101794679A (en) * | 2009-12-31 | 2010-08-04 | 常熟市名佳电子器材有限公司 | Built-in overload protector of air-conditioning compressor |
| CN201868331U (en) * | 2010-10-30 | 2011-06-15 | 苏州华旃航天电器有限公司 | Internal single-lead-pin compressor protector |
-
2010
- 2010-10-30 CN CN 201010526792 patent/CN101996823A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090045A (en) * | 2006-05-12 | 2007-12-19 | 森萨塔科技公司 | Thermally responsive electrical switch |
| CN101414746A (en) * | 2007-10-19 | 2009-04-22 | 森萨塔科技公司 | Current protector |
| CN201252050Y (en) * | 2008-07-28 | 2009-06-03 | 匡法荣 | Built-in type protector of a compressor |
| CN101339863A (en) * | 2008-08-07 | 2009-01-07 | 宝应电器厂 | PTC ceramic heat protector |
| CN201449943U (en) * | 2009-04-29 | 2010-05-05 | 江苏常胜电器有限公司 | Manual reset protector |
| CN201522965U (en) * | 2009-10-12 | 2010-07-07 | 匡法荣 | Current temperature dual protector |
| CN101794679A (en) * | 2009-12-31 | 2010-08-04 | 常熟市名佳电子器材有限公司 | Built-in overload protector of air-conditioning compressor |
| CN201868331U (en) * | 2010-10-30 | 2011-06-15 | 苏州华旃航天电器有限公司 | Internal single-lead-pin compressor protector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611926A (en) * | 2017-09-15 | 2018-01-19 | 珠海格力电器股份有限公司 | A kind of overload protection arrangement, method, storage medium, compressor and electrical equipment |
| CN107611926B (en) * | 2017-09-15 | 2020-11-06 | 珠海格力电器股份有限公司 | Overload protection device and method, storage medium, compressor and electric appliance |
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Application publication date: 20110330 |