CN103236378A - Three-phase compressor protector - Google Patents
Three-phase compressor protector Download PDFInfo
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- CN103236378A CN103236378A CN2013101837396A CN201310183739A CN103236378A CN 103236378 A CN103236378 A CN 103236378A CN 2013101837396 A CN2013101837396 A CN 2013101837396A CN 201310183739 A CN201310183739 A CN 201310183739A CN 103236378 A CN103236378 A CN 103236378A
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Abstract
The invention discloses a three-phase compressor protector comprising three phases of wiring pins and a temperature and sensing thermosensitive element which are arranged in a closed cavity formed by clamping a base with a cover plate; the compressor is characterized in that the static contacts of the three phases of wiring pins and the wiring pins form composite integral structures; the three phases of wiring pins are fixedly riveted onto the base through standard terminal insert structures with one ends extending out of the base and being welded with the three phases of wiring pins; the temperature sensing thermosensitive element is a dual metal sheet which is welded with three phases of moving contacts; the three phases of moving contacts form a three-phase equipotential structure; the dual metal sheet is fixedly arranged on the base through a screw which is sleeved with a spring, and the three phases of moving contacts of the dual metal sheet respectively form three phases of protection circuits through the elastic compression joint with the three phases of static contacts. Compared with the prior art, the moving contacts form the three-phase equipotential structure, so that the reliability is improved, the structure is compacter, each wiring pin is of the standard terminal insert structure, so that a compressor circuit is connected in quickly and conveniently, and the installation and change are very convenient.
Description
Technical field
The present invention relates to the electric components technical field, especially a kind of three-phase compressor protector for air-conditioning and refrigerator.
Background technology
Compressor is the core position of a lot of equipment, its cost is higher, but in use, because motor current is excessive or coil temperature is too high, one contacts bad or multiple reasons such as phase shortage, misphase in the three-phase circuit, bring problem all can for the normal operation of compressor.Gently then may cause whole system work undesired, heavy then may burn compressor.This just needs one even several protective device are installed, and protects the safety of compressor.
At present, a lot of for the protection of the thermal protector of three-phase compressor coil, when still inserting thermal protector in the compressor circuit; because the reasons in structure of himself, assembling is complicated, installs and change trouble; be difficult for using, the protector that also has is being difficult to automatically reply after the protection automatically.In addition; the protector of prior art is when identification misphase or phase shortage; often will be through complicated judgement; what have can only protect mutually to a certain in the three-phase; needing a plurality of protectors of installation just can finish protects phase shortage or the misphase of three-phase circuit; the protector structure that also has can only be protected two-phase in this three-phase circuit at most, also brings serious potential safety hazard for compressor.
Summary of the invention
The objective of the invention is a kind of three-phase compressor protector of designing at the deficiencies in the prior art; adopt the three-phase equipotential formula structure of spring reset; temperature-sensitive temperature-sensitive element and the crimping of three-phase fixed contact elasticity constitute the three-phase protective circuit; fixed contact is the contact-making surface of silver alloy and the compound one of wiring pin; novel structure; matching requirements have been simplified; saved the be connected operation of prior art fixed contact with quiet support; improved reliability; also dwindled simultaneously the volume of protector greatly, made the structure of protector compacter, terminal pin adopts the terminal inserted sheet structural design of standard; make protector insert compressor circuit quickly and easily, install and change very convenient.
The object of the present invention is achieved like this: a kind of three-phase compressor protector, comprise in the airtight cavity of pedestal and cover plate clamping and be provided with A wiring pin, B wiring pin, C wiring pin and temperature-sensitive temperature-sensitive element, be characterized in that described A wiring pin, B wiring pin and C wiring pin are " L " shape electrical connector that is provided with fixed contact, its fixed contact is the ag alloy layer contact-making surface of compound one on " L " shape cantilever, A wiring pin, B wiring pin and C wiring pin turn over rivet clasp and fix on the pedestal, and the one end stretches out pedestal and welds A terminal pin, B terminal pin and C line pin respectively; Described temperature-sensitive temperature-sensitive element is the bimetallic arc plate of welding A moving contact, B moving contact and C moving contact; the center of bimetallic arc plate is provided with circular hole; circular hole is fixed on the temperature-sensitive temperature-sensitive element on the pedestal by the screw of pocketed springs; its screw is fastening with the embedded nut that is arranged on the pedestal base; the temperature-sensitive temperature-sensitive element is arranged on the spring, and its A moving contact, B moving contact and C moving contact constitute the three-phase protective circuit with the fixed contact elasticity crimping of A wiring pin, B wiring pin and C wiring pin respectively.
Described moving contact, B moving contact and C moving contact are the three-phase equipotential formula structure that equilateral triangle arranges.
Described circular hole is provided with and is the little hole slot that radial slice connects.
Described screw is provided with the nut check of back of the body cap.
Described A terminal pin, B terminal pin and C line pin adopt the terminal inserted sheet structure of standard.
The present invention compared with prior art has simple in structure, volume is little, matching requirements have been simplified, saved the be connected operation of fixed contact with quiet support, moving contact adopts three-phase equipotential formula structure, has improved reliability, structure is compacter, terminal pin adopts the terminal inserted sheet structural design of standard, can insert compressor circuit quickly and easily, installs and change very convenient.
Description of drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is the upward view of Fig. 1
Fig. 3 is temperature-sensitive thermo-sensitive element structure schematic diagram
Fig. 4 is wiring leg structure schematic diagram.
Embodiment
Consult accompanying drawing 1 ~ accompanying drawing 2, the present invention includes in the airtight cavity of pedestal 1 and cover plate 3 clampings and be provided with A wiring pin 7, B wiring pin 8, C wiring pin 16 and temperature-sensitive temperature-sensitive element 2; Described A wiring pin 7, B wiring pin 8 and C wiring pin 16 turn over rivet clasp and fix on the pedestal 1, and the one end stretches out pedestal 1 and welds A terminal pin 11, B terminal pin 12 and C line pin 13 respectively; Described temperature-sensitive temperature-sensitive element 2 is the bimetallic arc plate of welding A moving contact 4, B moving contact 5 and C moving contact 6, the center of bimetallic arc plate is provided with circular hole 22, circular hole 22 is fixed on temperature-sensitive temperature-sensitive element 2 on the pedestal 1 by the screw 10 of pocketed springs 9, and its screw 10 is with to be arranged on embedded nut 15 on pedestal 1 base fastening and by 14 lockings of back of the body cap nut; Temperature-sensitive temperature-sensitive element 2 is arranged on the spring 9, and its A moving contact 4, B moving contact 5 and C moving contact 6 constitute the three-phase protective circuit with the fixed contact 27 elasticity crimping of A wiring pin 7, B wiring pin 8 and C wiring pin 16 respectively.
The present invention uses like this: the present invention is arranged on compressor end covers, A terminal pin 11, B terminal pin 12 is connected with the three-phase circuit output of three-phase compressor respectively with C line pin 13, when the compressor operate as normal: the A moving contact 4 on the temperature-sensitive temperature-sensitive element 2, B moving contact 5 and C moving contact 6 respectively with A wiring pin 7,27 of the fixed contacts of B wiring pin 8 and C wiring pin 16 contact, feeling oppressed when compressor changes or during abnormal operating state such as overload, the temperature of the electric current of coil increase at this moment or compressor coil raises, temperature raise after temperature-sensitive temperature-sensitive element 2 was subjected to the heat energy of its electric current, the big electric current that produces when perhaps electric current can not balance in the three-phase circuit raises the compressor heating temp, temperature-sensitive temperature-sensitive element 2 is heated and expands rapidly, and generation kick upset, and by spring 9 make on the temperature-sensitive temperature-sensitive element 2 A moving contact 4, B moving contact 5 and C moving contact 6 and A wiring pin 7, the fixed contact 27 of B wiring pin 8 and C wiring pin 16 disconnects, and cuts off the electricity supply.It is the element of mechanical energy with thermal power transfer that temperature-sensitive temperature-sensitive element 2 is one, and it is composited by the sheet metal of two kinds of different coefficients of expansion.Because the coefficient of expansion difference of two kinds of sheet metals, but the elongation of two kinds of sheet metal faying faces is identical, forces temperature-sensitive temperature-sensitive element 2 towards the less lateral bending song of the coefficient of expansion.When temperature descends; temperature-sensitive temperature-sensitive element 2 resets with regard to recovering original curved shape; fixed contact 27 auto-closings of A moving contact 4, B moving contact 5 and C moving contact 6 and A wiring pin 7, B wiring pin 8 and C wiring pin 16; make circuit recover normal operating conditions; what the present invention adopted is three-phase equipotential formula structure, thus circuit is lacked any one and can play effective protection mutually.Ifs circuit generation misphase, three-phase current equally can not balances, and electric current increases, and the temperature-sensitive temperature-sensitive element 2 after being heated can be finished the protection action, are repaired up to the circuit of misphase, and compressor just can work on.Can select the bimetal leaf material of different resistances according to the protection demand of different circuit, also can select the metal material of the different coefficients of expansion to realize the differently curved degree of bimetal leaf as required, to satisfy the safe handling of various model compressors.
Fixed contact of the present invention adopts the structural design with the compound one of wiring pin, has simplified matching requirements greatly, has saved the be connected operation of fixed contact with quiet support, has improved reliability, has also dwindled the volume of protector simultaneously greatly, makes the structure of protector compacter.Terminal pin adopts the terminal inserted sheet structural design of standard, makes protector can insert compressor circuit quickly and easily, and installation is changed very convenient.
More than just the present invention is further illustrated, is not in order to limit this patent, all for the present invention's equivalence enforcement, all should be contained within the claim scope of this patent.
Claims (5)
1. three-phase compressor protector, comprise in the airtight cavity of pedestal (1) cover plate clamping and be provided with A wiring pin, B wiring pin, C wiring pin and temperature-sensitive temperature-sensitive element, it is characterized in that described A wiring pin, B wiring pin and C wiring pin are " L " shape electrical connector that is provided with fixed contact, its fixed contact is the ag alloy layer contact-making surface of compound one on " L " shape cantilever, A wiring pin, B wiring pin and C wiring pin turn over rivet clasp and fix on the pedestal, and the one end stretches out pedestal and welds A terminal pin, B terminal pin and C line pin respectively; Described temperature-sensitive temperature-sensitive element is the bimetallic arc plate of welding A moving contact, B moving contact and C moving contact; the center of bimetallic arc plate is provided with circular hole; circular hole is fixed on the temperature-sensitive temperature-sensitive element on the pedestal by the screw of pocketed springs; its screw is fastening with the embedded nut that is arranged on the pedestal base; the temperature-sensitive temperature-sensitive element is arranged on the spring, and its A moving contact, B moving contact and C moving contact constitute the three-phase protective circuit with the fixed contact elasticity crimping of A wiring pin, B wiring pin and C wiring pin respectively.
2. according to the described three-phase compressor protector of claim 1, it is characterized in that described moving contact, B moving contact and C moving contact are the three-phase equipotential formula structure that equilateral triangle arranges.
3. according to the described three-phase compressor protector of claim 1, it is characterized in that described circular hole is provided with the little hole slot that is radial slice connection.
4. according to the described three-phase compressor protector of claim 1, it is characterized in that described screw (10) is provided with back of the body cap nut (14) locking.
5. according to the described three-phase compressor protector of claim 1, it is characterized in that described A terminal pin, B terminal pin and C line pin adopt the terminal inserted sheet structure of standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101837396A CN103236378A (en) | 2013-05-17 | 2013-05-17 | Three-phase compressor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101837396A CN103236378A (en) | 2013-05-17 | 2013-05-17 | Three-phase compressor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103236378A true CN103236378A (en) | 2013-08-07 |
Family
ID=48884412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101837396A Pending CN103236378A (en) | 2013-05-17 | 2013-05-17 | Three-phase compressor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103236378A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874755Y (en) * | 2006-01-19 | 2007-02-28 | 万宝冷机集团广州电器有限公司 | Three phase motor heat protector |
| US20110102126A1 (en) * | 2009-10-30 | 2011-05-05 | Hanbecthistem Co., Ltd. | Thermostat |
| CN102062082A (en) * | 2009-11-14 | 2011-05-18 | 苏州华旃航天电器有限公司 | Protector of compressor |
| US20120236441A1 (en) * | 2011-03-18 | 2012-09-20 | Jian Chen | Compressor for an air-conditioner with a motor protector and an air-conditioner |
-
2013
- 2013-05-17 CN CN2013101837396A patent/CN103236378A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874755Y (en) * | 2006-01-19 | 2007-02-28 | 万宝冷机集团广州电器有限公司 | Three phase motor heat protector |
| US20110102126A1 (en) * | 2009-10-30 | 2011-05-05 | Hanbecthistem Co., Ltd. | Thermostat |
| CN102062082A (en) * | 2009-11-14 | 2011-05-18 | 苏州华旃航天电器有限公司 | Protector of compressor |
| US20120236441A1 (en) * | 2011-03-18 | 2012-09-20 | Jian Chen | Compressor for an air-conditioner with a motor protector and an air-conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130807 |