CN202134459U - Explosion-proof type semi-automatic defrosting temperature controller - Google Patents
Explosion-proof type semi-automatic defrosting temperature controller Download PDFInfo
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- CN202134459U CN202134459U CN201020506347U CN201020506347U CN202134459U CN 202134459 U CN202134459 U CN 202134459U CN 201020506347 U CN201020506347 U CN 201020506347U CN 201020506347 U CN201020506347 U CN 201020506347U CN 202134459 U CN202134459 U CN 202134459U
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Abstract
The present utility model relates to an explosion-proof type semi-automatic defrosting temperature controller. The controller is composed of a shell, a capillary tube, a pedestal, and a bellows, a lever, a temperature adjusting extension spring, an adjusting nut, an adjusting screw, a push rod, a kick switch, a temperature adjusting mechanism and a semi-automatic defrosting mechanism arranged inside the pedestal. The kick switch is composed of a switch box, a movable contact, a fixed contact, a spring sheet, an arc spring, an L pin, a C pin, a gap screw, a conical spring and a separating plate, the fixed contact is riveted with the L pin, and the push rod is a stepped cylindrical rod. The controller is provided with the dual isolation effect of isolating inflammable and explosive gases and explosion waves; and without influencing the temperature stability of the prior temperature controller, the technology problems of the technology interchangeability, the maintenance interchangeability, and process flow consistency of explosion-proof products and non explosion-proof products can be solved.
Description
Technical field
The utility model relates to a kind of explosion-proof type semiautomatic defrosting thermostat.
Background technology
Because environmental protection and Montreal Agreement requirement; The former freon working medium that is used for refrigeration plant will be completely forbidden use, replace with the floride-free gas working medium that can not damage the ozone layer, and these no fluorine gas belong to flammable explosive gas; Refrigerant leakage appears in refrigeration plant; When gas concentration reaches certain value, will produce blast owing to the electric spark that break-make moment occurs, this electric switch part that just requires to be used for the thermostat of refrigeration plant must realize explosion prevention function.
Summary of the invention
Its purpose of the utility model is to overcome above defective and compression-type temperature controller that a kind of explosion-proof type semiautomatic defrosting function is provided, has the dual isolation effect of isolating flammable explosive gas and blast wave; Do not influencing under the thermostat temperature stabilization implementations of existing structure, solving technology difficult problems such as the technological process of technology interchangeability, maintenance interchangeability and explosion-proof and non-anti-explosion product is conforming.
The utility model for realizing the technical solution that above-mentioned purpose proposes is: by shell; Capillary, base and dress bellows, lever, temperature adjustment extension spring, adjusting nut, adjustment screw, push rod, kick switch, thermoregulative mechanism and semiautomatic defrosting mechanism within it forms; The kick switch by switch enclosure, moving contact, fixed contact, reed, arc spring, " L " pin, " C " pin, gap screw, volute spring, dividing plate form; Fixed contact is riveted on " L " on the pin; Push rod is the stairstepping cylindrical bar; The epimere periphery is sanding face structure and forms sealing surface movingly with the cylindrical hole of dividing plate that the two ends of push rod are semicircle sphere, contact with the mode of a face with reed, lever respectively; Reed with " C " pin is riveted into a conductive component, and moving contact is riveted on the reed.The outer end of gap screw and screw hole thereof is provided with solid melten gel layer; Stretch out the lead terminal of shell bottom surface and the outside, joint portion of switch enclosure and be provided with the epoxide-resin glue sealant; Push rod is the stairstepping cylindrical bar; The epimere periphery is sanding face structure and forms sealing surface movingly with the cylindrical hole of dividing plate; The two ends of push rod are semicircle sphere, contact with the mode of a face with reed, lever respectively; The length of epimere cylinder is greater than the length d of the cylindrical hole on the dividing plate, and the inboard of dividing plate periphery is a stepped annular boss, and full annular boss contact-making surface is provided with gluing, and with the switch enclosure adhering and sealing.
Compared with prior art, the utlity model has following beneficial effect:
On the basis of original non-explosion-proof electrical apparatus switch, the signal contact and the main contact that possibly produce electric spark are sealed in the confined space, through stoping inside and outside gaseous exchange and the design that guarantees structural strength.
(1) the push rod periphery adopts sanding face structure, on microcosmic, is commonly called as inferior photo structure, when this surface becomes sealing surface; Because the gaseous exchange resistance increases and the throttle effect of gaseous exchange, can more effectively stop inside and outside gaseous exchange, so gas barrier and blast wave isolation effect significantly improve; In addition; Use solid melten gel isolating seal between lead terminal, dividing plate, gap screw and the switch enclosure, thereby, realized that imflammable gas is isolated and blast wave is isolated dual explosion-proof effect; Under the prerequisite that the Ex that satisfies the IEC standard " n " type electrical apparatus for explosive atmospheres requires, push rod contacts with the leverage points face, and having reduced frictional force influences temperature characterisitic, has improved the temperature stability of thermostat.
(2) the utility model still keeps gap screw setting, makes to adopt the thermostat production procedure of this structure the same with non-anti-explosion product, behind the unified manufacture electric switch, requires the adjusting play screw according to different gap, seals with solid sols at last; So under the situation that guarantees sealing effectiveness, solved the interchangeability problem that the explosion-proof electrification switch assembles on thermostat.
(3),, solved the problem of the push rod interchangeability in the technical process so adopt straight-through structure because push rod length plays key effect to the thermostat operate condition; When deviation appears in other part, need not the dividing plate of whole good seal be disassembled, as long as change the push rod of different length simply, just can produce qualified product, thereby improve production efficiency and maintenance efficiency, reduce production costs.
(4) because the push rod two ends are the semicircle sphere shape, make trigger action in transmittance process, the angle that the push rod end face adapts to pressure-bearing lever on main reed and the thermostat changes, and the electric switch action still can keep continous-stable, thereby has solved the stability problem of product.
(5) only to the switch enclosure sealing rather than to whole body sealing, thus the not increase of the overall dimension of thermostat, the same with original compression-type temperature controller basically, make things convenient for thermostat to produce the position design of family.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Specific embodiments
Embodiment; As shown in Figure 1, a kind of explosion-proof type semiautomatic defrosting thermostat is by shell 1, capillary 8; Base 2 and dress bellows 3, lever 30, temperature adjustment extension spring 23, adjusting nut 24, adjustment screw 26 within it; Push rod 13, kick switch, thermoregulative mechanism and semiautomatic defrosting mechanism form, the kick switch by switch enclosure 16, moving contact 7, fixed contact 6, reed 15, arc spring 12, " L " pin 11, " C " pin 14, gap screw 9, volute spring 10, dividing plate 5 form, fixed contact 6 is riveted on " L " on the pin 11; Push rod 13 is the stairstepping cylindrical bar; The epimere periphery is sanding face structure and forms sealing surface movingly with the cylindrical hole of dividing plate 5 that the two ends of push rod are semicircle sphere, contact with the mode of a face with reed 15, lever 30 respectively; Reed 15 with " C " pin 14 is riveted into a conductive component, and moving contact 7 is riveted on the reed 15; The outer end of gap screw 9 and screw hole thereof is provided with solid melten gel layer; Stretch out the lead terminal 11,14 of shell bottom surface and the outside, joint portion of switch enclosure 16 and be provided with the epoxide-resin glue sealant.Push rod 13 is the stairstepping cylindrical bar, and the epimere periphery is sanding face structure and forms sealing surface movingly with the cylindrical hole of dividing plate 5 that the two ends of push rod are semicircle sphere, contact with the mode of a face with reed 15, lever 30 respectively; The length of epimere cylinder is greater than the length d of the cylindrical hole on the dividing plate 5.The inboards of dividing plate 5 periphery are a stepped annular boss, and full annular boss contact-making surface is provided with gluing, and with switch enclosure 16 adhering and sealings.Thermoregulative mechanism is made up of rotation axis 22, cam 18, cover plate 17, jump ring 19; Rotation axis 22 and cam 18 riveted joint form fix; Rotation axis 22 bottoms are passed cover plate 17 centre bores and are blocked with jump ring 19, and turn rotation axis 22 can rotate freely according to design cam 18 slewing areas; Semiautomatic defrosting mechanism by defrosting axle 21, " E " shape circle 20, defrosting pressing plate 29, defrosting screw 25, bearing spring 4, roller 28, defrosting leaf spring 27 form; Roller 28 is fixed on defrosting leaf spring 27 through bearing pin and rivets in two location holes of assemblies with adjustment (adjusting) lever 31; Roller is free to rotate; Under the normality, the defrosting pressing plate breaks away from lever under the effect of bearing spring, and defrost mechanism is inoperative to thermostat.
During work, lever 30 back and forth rotates under the effect of bellows 2, carries out shift reciprocately thereby promote push rod 13.Push rod 13 moves to right when refrigerator temperature descends, and when reaching critical break-off signal, under arc spring 12 self elastic force effect, reed 15 produces kicks, drives moving contact 7, fixed contact 6 is thrown off, and the compressor circuit of refrigerator is broken off, and refrigerator temperature begins to rise; Push rod 13 moves to left when refrigerator temperature rises, and when reaching critical connection temperature, push rod 13 actuating springs 15 produce kicks, drives moving contact 7, fixed contact 6 is bonding, and the compressor circuit of refrigerator is connected, and compressor start, refrigerator temperature begin to descend.When frosting is many in the user finds refrigerator, press defrosting axle 21, promote defrosting pressing plate 29 to depress lever 30, lever 30 is downward; The groove of defrosting pressing plate 29 snaps in the roller 28, and thermostat is forced disconnection, and compressor quits work, and the temperature in the refrigerator begins to rise; The positive temperature that is set at of the general temperature that defrosts, when the temperature in the refrigerator reached the defrosting temperature of setting, lever 30 backed down defrosting pressing plate 29; Defrosting pressing plate 29 breaks away from roller 28, and thermostat is connected, compressor starts work; Temperature begins to descend in the refrigerator, and at this moment defrost mechanism does not exert an influence to thermostat, and thermostat is by original connection break-off signal operate as normal.
Claims (4)
1. explosion-proof type semiautomatic defrosting thermostat; Form by shell (1), capillary (8), base (2) and dress bellows (3), lever (30), temperature adjustment extension spring (23), adjustment screw (26), adjusting nut (24), push rod (13), kick switch, thermoregulative mechanism and semiautomatic defrosting mechanism within it; It is characterized in that; The kick switch is made up of switch enclosure (16), moving contact (7), fixed contact (6), reed (15), arc spring (12), L pin (11), C pin (14), gap screw (9), volute spring (10), dividing plate (5); Fixed contact (6) is riveted on the L pin (11), and push rod (13) is the stairstepping cylindrical bar, and the epimere periphery is sanding face structure and forms sealing surface movingly with the cylindrical hole of dividing plate (5); The two ends of push rod are semicircle sphere, contact with the mode of a face with reed (15), lever (30) respectively; Reed (15) is riveted into a conductive component with C pin (14), and moving contact (7) is riveted on the reed (15).
2. a kind of explosion-proof type semiautomatic defrosting thermostat according to claim 1 is characterized in that the outer end of described gap screw (9) and screw hole thereof is provided with solid melten gel layer; Lead terminal (11), (14) of stretching out the shell bottom surface are provided with the epoxide-resin glue sealant with the outside, joint portion of switch enclosure (16).
3. a kind of explosion-proof type semiautomatic defrosting thermostat according to claim 1; It is characterized in that; Described push rod (13) is the stairstepping cylindrical bar; The epimere periphery is sanding face structure and forms sealing surface movingly with the cylindrical hole of dividing plate (5) that the two ends of push rod are semicircle sphere, contact with the mode of a face with reed (15), lever (30) respectively; The length of epimere cylinder is greater than the length d of the cylindrical hole on the dividing plate (5).
4. a kind of explosion-proof type semiautomatic defrosting thermostat according to claim 1 is characterized in that, the inboard of described dividing plate (5) periphery is a stepped annular boss, and full annular boss contact-making surface is provided with gluing, and with switch enclosure (16) adhering and sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020506347U CN202134459U (en) | 2010-08-26 | 2010-08-26 | Explosion-proof type semi-automatic defrosting temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020506347U CN202134459U (en) | 2010-08-26 | 2010-08-26 | Explosion-proof type semi-automatic defrosting temperature controller |
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| Publication Number | Publication Date |
|---|---|
| CN202134459U true CN202134459U (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020506347U Expired - Fee Related CN202134459U (en) | 2010-08-26 | 2010-08-26 | Explosion-proof type semi-automatic defrosting temperature controller |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236373A (en) * | 2013-05-10 | 2013-08-07 | 佛山通宝华通控制器有限公司 | Quickly-cooling automatic-resetting pressure-type temperature controller |
| CN104197630A (en) * | 2014-09-18 | 2014-12-10 | 合肥华凌股份有限公司 | Temperature difference type temperature controller and refrigerator |
| CN104392864A (en) * | 2014-10-17 | 2015-03-04 | 中国船舶重工集团公司第七一二研究所 | Moving contact support of spherical pair |
| CN104616932A (en) * | 2015-02-12 | 2015-05-13 | 佛山通宝华通控制器有限公司 | Rapid freezing pressure type temperature controller |
| CN104851742A (en) * | 2015-05-28 | 2015-08-19 | 佛山通宝华通控制器有限公司 | Semi-automatic defrost pressure type thermostat |
| CN105118733A (en) * | 2015-09-01 | 2015-12-02 | 常州汇商电器有限公司 | Temperature controller pedestal and manufacturing technique |
| CN109372909A (en) * | 2018-04-08 | 2019-02-22 | 九江精密测试技术研究所 | Mechanical locking device based on lever fine motion principle rotating shaft |
-
2010
- 2010-08-26 CN CN201020506347U patent/CN202134459U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236373A (en) * | 2013-05-10 | 2013-08-07 | 佛山通宝华通控制器有限公司 | Quickly-cooling automatic-resetting pressure-type temperature controller |
| CN103236373B (en) * | 2013-05-10 | 2015-07-29 | 佛山通宝华通控制器有限公司 | A kind of snap frozen auto-reset type compression-type temperature controller |
| CN104197630A (en) * | 2014-09-18 | 2014-12-10 | 合肥华凌股份有限公司 | Temperature difference type temperature controller and refrigerator |
| CN104392864A (en) * | 2014-10-17 | 2015-03-04 | 中国船舶重工集团公司第七一二研究所 | Moving contact support of spherical pair |
| CN104616932A (en) * | 2015-02-12 | 2015-05-13 | 佛山通宝华通控制器有限公司 | Rapid freezing pressure type temperature controller |
| CN104851742A (en) * | 2015-05-28 | 2015-08-19 | 佛山通宝华通控制器有限公司 | Semi-automatic defrost pressure type thermostat |
| CN105118733A (en) * | 2015-09-01 | 2015-12-02 | 常州汇商电器有限公司 | Temperature controller pedestal and manufacturing technique |
| CN105118733B (en) * | 2015-09-01 | 2018-03-02 | 常州汇商电器有限公司 | A kind of temperature controller base and production technology |
| CN109372909A (en) * | 2018-04-08 | 2019-02-22 | 九江精密测试技术研究所 | Mechanical locking device based on lever fine motion principle rotating shaft |
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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: 20120201 Termination date: 20150826 |
|
| EXPY | Termination of patent right or utility model |