CN1908440A - Air-tight compressor thermal protector - Google Patents
Air-tight compressor thermal protector Download PDFInfo
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- CN1908440A CN1908440A CN 200510036272 CN200510036272A CN1908440A CN 1908440 A CN1908440 A CN 1908440A CN 200510036272 CN200510036272 CN 200510036272 CN 200510036272 A CN200510036272 A CN 200510036272A CN 1908440 A CN1908440 A CN 1908440A
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Abstract
The invention relates to a sealing-type compressor heat protector, which can be used in the overload protection of sealing compressor with one compress device and one sealing frame of refrigeration gas, wherein a heat for preparing the temperature-constant condition inside the frame is mounted inside or outside the frame of heat protector; the frame of heat protector includes heater and metallic chamber, while the heating fuse, insertion plate and metal cover are integrated on the upper part and the inner part of frame; said protector can be mounted outside the frame to improve the producing efficiency, while its protection ability is equal with present internal protector.
Description
Technical field
The present invention relates to a kind of overheat of compressor protective gear, particularly a kind of air-tight compressor thermal protector belongs to refrigeration technology field.
Background technique
Existing compressor all adopts heat protector to protect the excess load running of compressor motor; existing heat protector has outside compressor case the heat protector (external heat protector) installed and two kinds of the heat protectors (built-in heat protector) installed in compressor; their working principle is basic identical; all be in the sealing electric compressor, adopt thermoswitch to protect motor unlikely overheated owing to transship with a bimetallic strip.Built-in heat protector is owing to be installed on compressor inside; directly contact with refrigerant; to temperature sense than external heat protector sensitivity; so big electric current machine also is suitable for; for the external heat protector, owing to be installed on compressor housing loam cake outside, heat is passed to the heat protector bimetallic strip again after case top lid; temperature sense not as good as built-in heat protector sensitivity, mainly is applicable to little electric current machine.Therefore with regard to present heat protector mounting technique, only be installed on the compression case external body and be installed on two kinds of schemes of compressor.
But, for existing built-in heat protector, shown in Fig. 1, Fig. 1 a, because built-in heat protector 17 is assembled in compressor, be connected with the motor lighting outlet in compressor by horizontal leading foot, assembling performance simple in the imagination not on the one hand, efficient is low in production line is produced, because the motor lighting outlet takes place and contacts the phenomenon that causes the compressor insulation fault with compressor exhaust pipe in assembling performance difficulty easily when compressor is installed; On the other hand, because heat protector is directly to insert sealed wiring styletable below by inserted sheet is installed, when compressor operation, still have the possibility that comes off.In addition, when breaking down, will cause whole compressor to scrap (as in the interior protector during fusing of protection silk) as heat protector.And for existing external heat protector; shown in Fig. 2, Fig. 2 a; because external heat protector 18 is installed on the compression case external body; and heat is to be transmitted to refrigerant by motor, is transmitted to loam cake by refrigerant, is transmitted to heat protector inside by loam cake again; even metal base plate is adopted in the heat protector bottom; also loss was more when heat was transmitted to heat protector, now was only applicable to little electric current machine, can't be applicable to big electric current machine.
Summary of the invention
In view of the existing built-in shortcoming that exists with the external heat protector; the present invention designs a kind of air-tight compressor thermal protector; it has built-in heat protector compressor protection is had equal effect and is directly installed on the compression case external body; standard heat protector assemblage difficult problem in can solving on the one hand; can solve built-in heat protector on the other hand because compressor operation causes loosening problem; protective action simultaneously is just the same with built-in heat protector effect; size electric current machine all is suitable for, and has solved the external heat protector and has conducted heat bad problem and cause the inapplicable narrow limitation of big electric current machine.
Technical solution
Heat protector of the present invention comprises external casing, conductive pole, temperature-sensitive video disc, contact, protective gear and electro-heat equipment; in insulation shell 8, be with by conductive pole 1, on the airtight cavity formed of welded plate 4 and housing chamber 6; in this airtight cavity, be provided with temperature-sensitive video disc 9, contact 7, conductive pole 1, inserted sheet 2 and protective gear 11; be provided with electro-heat equipment 5 in housing 8, inserted sheet 2 is installed in the housing 8 or in the base plate 10.Heat protector of the present invention mainly is installed on the compression case external body; and compressor inner structure mainly is made up of the pump housing and motor two-part; motor rotor directly is installed on the bent axle of the pump housing by hot jacket, and stator directly is installed on the housing of compressor by hot jacket.When compressor was switched on, motor produced rotating magnetic field, drove compressor drum and rotated, and this moment, refrigerant was sucked by pump housing suction side, and by forming high pressure-temperature gas after the pump body compression, this moment, motor load increased, and electric current increases.When voltage functuation or compressor take place when unusual, as compressor unprotect device, motor probably took place and burnt in compressor this moment, even the danger of breaking out of fire.So must append heat protector in the compressor.The present invention adopts installation method as shown in Figure 3 and Figure 4; heat protector 12 is installed on compressor housing 14 outsides or the sealed wiring post 15; when the compressor voltage functuation is big; motor 16 electric currents increase; the compressor inside temperature raises; temperature is directly passed to compressor housing 14 by refrigerant or air, and and then housing is passed to heat protector 12 with temperature.The present invention increases electro-heat equipment 5, and it is poor to allow its heat that sends remedy the heat that is lost that is transmitted to the heat protector kernel in the compressor, reaches equal temperature environment around the existing built-in heat protector.When compressor operation; because the electric current by heat protector equates with electric current by motor; during by motor and heat protector, the bimetallic strip of heat protector temperature-sensitive video disc 9 and electro-heat equipment 5 generate heat rapidly as big electric current (when compressor voltage rises or descends, abnormal current).As when not having electro-heat equipment 5, heat, is transmitted on the inner bimetallic strip of heat protector by housing to compressor housing by the compressor conducted inside again, and it is bigger to cause heat lose in conduction, protects effect not reach the effect of built-in heat protector.(because built-in heat protector is direct induced compression machine inside temperature, temperature-sensitive is responsive.) electro-heat equipment that heating value is suitable of increase; allow its heat that sends remedy that part of heat of losing owing to conduction; make heat protector insulation shell 8 interior temperature the same substantially with compressor housing 14 interior temperature; the bimetallic strip of heat protector temperature-sensitive video disc 9 is under the acting in conjunction of electric current and temperature; expand rapidly and bend; allow contact 7 separate (thermal expansion coefficient of two layers composite metals is different about the bimetallic strip) rapidly; thereby reach and the equal effect protective action of built-in heat protector, thereby obtain the effect of protecting compressor.Because the electric current by heat protector 12 is just the same with the electric current by compressor motor 16; when (as stall etc.) when unusual takes place compressor; principle is the same; electric current generation this moment rapid change; cause in the thermosensitive bimetal 9 and the heating value of electro-heat equipment 5 also changes thereupon; temperature also changes thereupon in the insulation shell 8; this is consistent with temperature variation in the compressor housing; thereby reach and the existing equal protection effect of built-in heat protector; thereby reach protection compressor generation high temperature, to avoid fire.
Beneficial effect of the present invention:
1, adopt the heat protector of this conceptual design can reach the effect that is equal to existing built-in heat protector.
2, heat protector is directly installed and the compression case external body; vibrations during compressor operation do not have influence to heat protector; can prevent that heat protector is owing to the possibility that running causes coming off takes place; heat protector is installed and is independently separated with motor; motor and sealed wiring post efficiency of assembling improve, compressor manufacturing efficiency improves.
Description of drawings
Fig. 1, Fig. 1 a are respectively the compressor arrangement schematic representation that built-in heat protector is installed in the prior art, the structural representation of built-in heat protector;
Fig. 2, Fig. 2 a are equipped with the compressor arrangement schematic representation of external heat protector, the structural representation of external heat protector in the prior art;
Fig. 3, Fig. 3 a, Fig. 3 b are installed in compression case external body schematic representation and structural representation for heat protector of the present invention;
Fig. 4, Fig. 4 a are installed in compression case external body schematic representation and structural representation (heat protector is installed on the sealed wiring post) for heat protector of the present invention;
Fig. 4 b is the concrete structure figure of M portion among Fig. 4 a;
Fig. 5 is directly installed on schematic representation on the compressor housing external sealed wiring terminal for heat protector of the present invention.
Embodiment
The present invention designs a kind of novel heat protector (as Fig. 3 a); it comprises housing 8, conductive pole 1, temperature-sensitive video disc 9, contact 7, inserted sheet 2, protective gear 11 and baffle plate 10 and electro-heat equipment 5; in the casing insulation housing 8 of protector 12, be provided with electro-heat equipment 5; the metal closed chamber is made up of last welded plate 4 and housing chamber 6; in vacuumize and feed shielding gas, produce the arcing phenomenon when preventing to switch on.Leading out terminal 1 is the conductive pole shape, and two leading out terminals 1 run through welded plate 4 on the metal closed chamber respectively, and is fused into one by welded plate 4 on fusion body and the metal closed chamber.The fusion body is hardenable electrically insulating material.Metal closed chamber inside is equipped with the protective gear 11 that temperature-sensitive video disc 9, contact 7 and play heating and protective action; Electro-heat equipment 5 two ends separate with conductive pole 1 with inserted sheet 2 respectively and are connected, and inserted sheet 2 is communicated to insulation shell 8 outsides and is fixed on the housing 8.Electro-heat equipment 5 is installed in the insulation shell 8, and insulation shell 8 bottoms are equipped with one and prevent the plate washer 10 that foreign matter enters, thereby constitute the design's heat protector.Protector 12 is directly installed on compressor housing 14 outsides (as Fig. 3); heat protector 12 utilizes lead to be connected conducting (heat protector and motor wiring are as shown in Figure 5) with compressor seal wiring terminal 15 in the compression case external body; this mode of connection is just the same with the existing external heat protector mode of connection; the motor lighting outlet need not be directly connected on the heat protector, can reduce the danger of motor leads and compressor exhaust pipe 3 contact discharges.After whole this structure of employing; can solve the low problem of built-in heat protector installation efficiency; because it is external that this moment, heat protector directly was installed on compression case; and not be used in heat protector when founding compressor, group is installed; improved the efficiency of assembling of compressor production line; simultaneously, adopt this scheme after, can solve the external heat protector because of conducting heat bad and only applicable to the drawback of little electric current machine.
Fig. 4 a is the another kind of structural type of heat protector of the present invention; heat protector is installed on compressor housing 14 outsides (as Fig. 4); heat protector is directly installed on the compressor seal wiring terminal 15; this mounting type is a kind of novel mode of connection; compare with the existing external heat protector mode of connection; can save the lead that a heat protector is connected to the sealed wiring post; after adopting this mode of connection; motor leads need not directly be installed on the heat protector, also can avoid contacting with compressor exhaust pipe because of motor leads the danger of guiding discharge.After adopting this mode of connection, existing heat protector design has certain change on the structural design of heat protector, the conductive pole 1 of the heat protector of this moment penetrates by last welded plate 4 and housing chamber 6 forms a closed chamber, conductive pole 1 and 4 constitutes by an integral body of this insulation by sintering method, and this closed chamber inside is equipped with the protective gear 11 that temperature-sensitive video disc 9, contact 7 and play heating and protective action; Electro-heat equipment 5 two ends of this heat protector separate with conductive pole 1 with inserted sheet 2 respectively and are connected, and inserted sheet 2 is communicated on the insulation shell 8 and fixes, and electro-heat equipment is installed in insulation shell 8 in the direct space of M portion, also can be installed in the M portion or in the insulation shell 8.Another is fixed in the insulation shell 8 with inserted sheet 2 one ends that sealed wiring post 15 directly links to each other, and the other end is connected with conductive pole 1, thereby constitutes the loop with M portion, 5,2.Inserted sheet 2 is in the insulation shell 8 fully, can prevent that air-conditioning from installing live part electric leakage behind the lead, and with other live part and the not danger of live metal position contact discharge.
Adopt the heat protector of this mechanism design; the upright inefficient problem of standard heat protector group in can reducing; because it is external that the direct group of heat protector this moment is stood on compression case; and not be used in heat protector when founding compressor, group is installed; improved the efficiency of assembling of compressor production line; simultaneously, adopt this scheme after, can solve the external heat protector and conduct heat bad and only applicable to the drawback of little electric current machine.The wiring diagram of heat protector and motor is seen Fig. 5.
Claims (8)
1, a kind of air-tight compressor thermal protector; comprise external casing, conductive pole, temperature-sensitive video disc, contact, protective gear and electro-heat equipment; it is characterized in that in the insulation shell (8) of heat protector (12), being with by conductive pole (1), go up the airtight cavity that welded plate (4) and housing chamber (6) are formed; in this airtight cavity, be provided with temperature-sensitive video disc (9), contact (7), conductive pole (1) and protective gear (11); in housing (8), be provided with electro-heat equipment (5), inserted sheet (2) be installed on directly that housing (8) is gone up or base plate (10) on.
2, a kind of air-tight compressor thermal protector according to claim 1; it is characterized in that described heat protector (12) is directly installed on the surface of compressor housing (14), heat protector (12) is connected by lead in the compression case external body by sealed wiring post (15) with motor (16).
3, a kind of air-tight compressor thermal protector according to claim 1; it is characterized in that the conductive pole (1) in the airtight cavity of heat protector constitutes an integral body by hardenable electrical insulation fusion body and welded plate (4) welding; electro-heat equipment (5) two ends separate with conductive pole (1) with inserted sheet (2) respectively and are connected, and inserted sheet (2) is communicated to the outside of housing (8) or base plate (10).
4, a kind of air-tight compressor thermal protector according to claim 1 is characterized in that electro-heat equipment (5) can be installed in insulation shell (8) inside or outer position.
5, a kind of air-tight compressor thermal protector according to claim 1; it is characterized in that inserted sheet (2) is encapsulated in the housing (8); electro-heat equipment (5) is installed on the position between housing chamber (6) M portion and housing (8), also can connect certainly and be installed in outside, housing chamber (6).
6, a kind of air-tight compressor thermal protector according to claim 5 is characterized in that the heat guarantor expands device and can be directly installed on the sealed wiring post (15) of compressor housing, and is connected with the sealed wiring post without lead.
7, a kind of air-tight compressor thermal protector according to claim 1 is characterized in that insulation shell (8) and baffle plate (10) can form an airtight cavity, also can form not airtight cavity.
8,, it is characterized in that baffle plate (10) is installed in the bottom or the upper position of housing (8) according to claim 1 and 3 described a kind of air-tight compressor thermal protectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100362728A CN100572817C (en) | 2005-08-03 | 2005-08-03 | A kind of air-tight compressor thermal protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100362728A CN100572817C (en) | 2005-08-03 | 2005-08-03 | A kind of air-tight compressor thermal protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1908440A true CN1908440A (en) | 2007-02-07 |
| CN100572817C CN100572817C (en) | 2009-12-23 |
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ID=37699629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100362728A Expired - Fee Related CN100572817C (en) | 2005-08-03 | 2005-08-03 | A kind of air-tight compressor thermal protector |
Country Status (1)
| Country | Link |
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| CN (1) | CN100572817C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269158A (en) * | 2011-07-01 | 2011-12-07 | 上海航天科工电器研究院有限公司 | External compressor protector |
| CN104217896A (en) * | 2014-09-15 | 2014-12-17 | 匡成效 | Built-in over-current overheating protector |
| CN108626104A (en) * | 2018-06-22 | 2018-10-09 | 佛山科学技术学院 | A kind of anti-evacuator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908595A (en) * | 1989-05-12 | 1990-03-13 | Yamada Electric Mfg. Co., Ltd. | Motor protector |
-
2005
- 2005-08-03 CN CNB2005100362728A patent/CN100572817C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269158A (en) * | 2011-07-01 | 2011-12-07 | 上海航天科工电器研究院有限公司 | External compressor protector |
| CN104217896A (en) * | 2014-09-15 | 2014-12-17 | 匡成效 | Built-in over-current overheating protector |
| CN108626104A (en) * | 2018-06-22 | 2018-10-09 | 佛山科学技术学院 | A kind of anti-evacuator |
| CN108626104B (en) * | 2018-06-22 | 2024-04-30 | 佛山科学技术学院 | Evacuating-proof device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100572817C (en) | 2009-12-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20120803 |