CN2578959Y - Explosion-proof pressure temperature controller with assistant switch - Google Patents
Explosion-proof pressure temperature controller with assistant switch Download PDFInfo
- Publication number
- CN2578959Y CN2578959Y CN 02249191 CN02249191U CN2578959Y CN 2578959 Y CN2578959 Y CN 2578959Y CN 02249191 CN02249191 CN 02249191 CN 02249191 U CN02249191 U CN 02249191U CN 2578959 Y CN2578959 Y CN 2578959Y
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- switch
- auxiliary
- contact
- explosion
- push rod
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Abstract
The utility model relates to an explosion-proof pressure temperature controller with an assistant switch, which belongs to the technical field of a mechanical temperature controller. A bellows, a pressure loading plate, a temperature regulation pull spring, a switch box, a partition board, a terminal and a contact assembly are arranged in a main body; the middle upper part of the center of the partition board is provided with two lug bosses of which the height is not less than 6 mm; cylindrical push rods are matched with round through holes of the two lug bosses; both ends of one push rod are respectively contacted with movable contact sheets and the pressure loading plate in a point form; one end of the other push rod is contacted with auxiliary contact sheets; the other end of the other push rod is contacted with a cam through an auxiliary sheet handle. The junction of the switch box and the partition board and the junction of the terminal and the switch box are all sealed by epoxy resins. Because the switch box of the utility model has sealing and explosion-proof treatment, the utility model is suitable for electric refrigerators which use combustible and explosive materials, such as hydrocarbon, etc., as working medium.
Description
Technical field
The utility model relates to the mechanical temperature controller technical field, particularly a kind of explosion-proof type compression-type temperature controller with auxiliary switch.
Background technology
The explosion-proof type compression-type temperature controller of band auxiliary switch is widely used in the control of two-door derect refrigerated refrigerator refrigeration, its structure is referring to shown in Figure 1, it is by main body 1 and dress bellows 2, bearing plate 3, temperature adjustment extension spring 19 within it, push rod 4, main switch and auxiliary switch are formed, main switch is by switch enclosure 12, moving contact 7, fixed contact 6, movable contact spring 13, bow spring 8, three binding posts 9,10,11, movable contact spring 13, auxiliary contact 14, auxilliary moving contact 15, auxilliary fixed contact 16, auxilliary sheet handle 17, dividing plate 5 is formed.In dividing plate 5 middle and upper parts two emptying apertures are arranged, there are very big gap in push rod 4 and auxilliary sheet handle 17 with the emptying aperture of the dividing plate 5 that is passed.Between binding post 9,10,11 and the switch enclosure 12, also be in non-tight between dividing plate 5 and the switch enclosure 12 and be connected.Therefore, the switch contact of the compression-type temperature controller of existing band auxiliary switch all is in the state that is communicated with outside air, under the situation of civil power alternating current 220V, rated current 4A, starting current 24A, can produce electric spark in the make and break process of contact, if there is flammable explosive gas then can set off an explosion on every side.At present, because environmental protection requirement, some refrigerator has adopted hydrocarbon flammable and explosive substances such as (HC) as working medium (refrigerant), and wherein the evaporator of some refrigerator is mounted in the casing, the thermostat body also is mounted in the casing, just in case during the evaporator refrigerant leakage, the arc spark that produces when sensitive switch or auxiliary switch move in the compression-type temperature controller may be lighted these working medium and cause an explosion accident.
Summary of the invention
The technical problems to be solved in the utility model is the contact of sensitive switch and auxiliary switch in the compression-type temperature controller of band auxiliary switch will to be contained in the seal cavity, and is isolated with the flammable explosive gas around it.
The technical solution that the utility model proposed is such: a kind of explosion-proof type compression-type temperature controller with auxiliary switch, in this thermostat main body 1, bellows 2 is housed, bearing plate 3, temperature adjustment extension spring 19, main switch and auxiliary switch, this main switch and auxiliary switch comprise switch enclosure 12, dividing plate, binding post 9,10,11, moving contact 7, fixed contact 6, movable contact spring 13, bow spring 8, auxiliary contact 14, auxilliary moving contact 15, auxilliary fixed contact 16, push rod, cam 18, described dividing plate 211 middle and upper parts are provided with the boss 212 and boss 213 that two thickness are not less than b, and at these two boss 212,213 central authorities are provided with round tube hole; Be provided with cylindrical primary push rod 201 and auxiliary push-rod 221, pass corresponding round tube hole respectively in mode movingly, wherein primary push rod 201 two ends are connected with 3 contacts of movable contact spring 13 and bearing plate respectively, and auxiliary push-rod 221 1 ends contact with auxiliary contact 14, its other end and auxilliary sheet handle 24 lower ends are bonding, and cam 18 contacts with auxilliary sheet handle 24 tops; Switch enclosure 12 and dividing plate 211 junction surfaces 23 and binding post 9,10,11 and switch enclosure 12 junction surfaces 20 usefulness encapsulants seal.Described dividing plate 211 boss thickness b 〉=6mm.
Compared with prior art, the utlity model has following beneficial effect:
(1) because primary push rod and auxiliary push-rod and dividing plate adopt cylindrical being slidingly matched, so its fit clearance is very little, length of fit is enough big, in the time of so guaranteeing the imflammable gas stipulated when designing institute or steam at the switch enclosure internal explosion, can not damage switch enclosure, the switch enclosure internal explosion can not propagated to adjacent outside fuel gas or steam yet.This structure belongs to closed tripper, meets the requirement of Ex " n " the type electrical apparatus for explosive atmospheres of IEC standard.
(2) because the switch enclosure internal capacity of sealing is little, it is inner if blast, then intensity is also little, so the quality of fit of primary push rod and auxiliary push-rod and dividing plate high boss round tube hole is less demanding, working of plastics such as switch enclosure, dividing plate need not be thickeied, and size is changed little, is easy to processing, so provide cost savings, be convenient to produce in enormous quantities.
(3) because only to the switch enclosure sealing rather than to whole body sealing, so thermostat overall dimension has only Xiao Xu to increase, and is the same with former compression-type temperature controller basically, makes things convenient for the installation site of refrigerator producer design thermostat.
Description of drawings
Fig. 1 is existing a kind of compression-type temperature controller structural representation with auxiliary switch.
Fig. 2 is the explosion-proof type compression-type temperature controller structural representation of the band auxiliary switch of an embodiment of the utility model.
Fig. 3 is the left side structural representation of Fig. 2.
Embodiment
By following embodiment the utility model is further elaborated.
Referring to Fig. 2, shown in Figure 3, embodiment of the utility model: the explosion-proof type compression-type temperature controller of band auxiliary switch partly is made up of main body 1 and switch enclosure, and bellows 2 is housed in main body 1, bearing plate 3, temperature adjustment extension spring 19, main switch and auxiliary switch, this main switch and auxiliary switch comprise switch enclosure 12, dividing plate 211, binding post 9,10,11, moving contact 7, fixed contact 6, movable contact spring 13, bow spring 8, auxiliary contact 14, auxilliary moving contact 15, auxilliary fixed contact 16, primary push rod 201, auxiliary push-rod 221 are formed.In the present embodiment, dividing plate 211 middle and upper parts are provided with the boss 212 and boss 213 that two thickness b are not less than 6nn, and are provided with round tube hole in these two boss central authorities; Primary push rod 201 is cylindrical, and two ends are cone, is provided with shoulder 202 near movable contact spring 13 1 sides, and the round tube hole of this primary push rod 201 and dividing plate 211 central authorities is for movingly, and primary push rod 201 two ends contact with 3 of movable contact spring 13 and bearing plates respectively and join.Fixed contact 6 passes switch enclosure 12 by binding post 9 and draws the outside, and moving contact 7 passes switch enclosure 12 by movable contact spring 13 and binding post 11 and draws the outside; Auxiliary push-rod 221 is also cylindrical, be provided with shoulder 222 near auxiliary contact 14 1 sides, for movingly, auxiliary push-rod 221 1 ends contact with auxiliary contact 14 and join this auxiliary push-rod 221 during by dividing plate 221 upper end round tube holes, and the other end passes through to assist sheet handle 24 and contacts with cam 18.Switch enclosure 12 is used epoxy sealing with dividing plate 211 junction surfaces 23.Epoxy sealing is also used at the junction surface 20 of binding post 9,10,11 and switch enclosure 12.Main switch shown in Figure 2 is in on-state, and when temperature decline, bellows 2 shrinks primary push rod 201 is slowly moved to left, when arriving critical localisation, and 8 upsets of bow spring, main switch disconnection; Otherwise switch connection.When the user needed, cam 18 promotes auxilliary sheet handle 24 made auxiliary push-rod 221 be moved to the left, and makes terminal 9,10 disconnect.Because the round tube hole of primary push rod 201 and dividing plate 211 and auxiliary push-rod 221 and dividing plate 211 is movingly, its gap is very little, and its mating surface long enough, thereby, can realize the flame proof function, be a kind of closed tripper, meets the requirement of IEC explosion-proof criteria Ex " n " type antiknock device.
Claims (2)
1, a kind of explosion-proof type compression-type temperature controller with auxiliary switch, in this thermostat main body (1), bellows (2) is housed, bearing plate (3), temperature adjustment extension spring (19), main switch and auxiliary switch, this main switch and auxiliary switch comprise switch enclosure (12), dividing plate, binding post (9,10,11), moving contact (7), fixed contact (6), movable contact spring (13), bow spring (8), auxiliary contact (14), auxilliary moving contact (15), auxilliary fixed contact (16), push rod, cam (18), it is characterized in that: described dividing plate (211) middle and upper part is provided with the boss (212) and boss (213) that two thickness are not less than b, and at these two boss (212,213) central authorities are provided with round tube hole; Be provided with cylindrical primary push rod (201) and auxiliary push-rod (221), pass corresponding round tube hole respectively in mode movingly, wherein primary push rod (201) two ends contact with bearing plate (3) point with movable contact spring (13) respectively and are connected, and auxiliary push-rod (221) one ends contact with auxiliary contact (14), its other end and auxilliary sheet handle (24) lower end are bonding, and cam (18) contacts with auxilliary sheet handle (24) top; Switch enclosure (12) seals with encapsulant with switch enclosure (12) junction surface (20) with dividing plate (211) junction surface (23) and binding post (9,10,11).
2, the explosion-proof type compression-type temperature controller of band auxiliary switch according to claim 1 is characterized in that: described dividing plate (211) boss thickness b 〉=6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249191 CN2578959Y (en) | 2002-11-04 | 2002-11-04 | Explosion-proof pressure temperature controller with assistant switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249191 CN2578959Y (en) | 2002-11-04 | 2002-11-04 | Explosion-proof pressure temperature controller with assistant switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578959Y true CN2578959Y (en) | 2003-10-08 |
Family
ID=33719667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02249191 Expired - Lifetime CN2578959Y (en) | 2002-11-04 | 2002-11-04 | Explosion-proof pressure temperature controller with assistant switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578959Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964276A (en) * | 2010-09-26 | 2011-02-02 | 太平洋电子(昆山)有限公司 | Automatic reset temperature controller |
| CN102348354A (en) * | 2011-07-17 | 2012-02-08 | 太平洋电子(昆山)有限公司 | Dust-proof device for temperature controller |
| CN103575452A (en) * | 2012-07-18 | 2014-02-12 | 上海华虹Nec电子有限公司 | Pressure detection system used for low pressure furnace tube device |
| CN109755070A (en) * | 2019-03-08 | 2019-05-14 | 佛山通宝华通控制器有限公司 | A kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch |
| CN109755070B (en) * | 2019-03-08 | 2024-06-07 | 佛山通宝华通控制器有限公司 | Single-pole double-throw explosion-proof pressure type temperature controller with auxiliary switch |
-
2002
- 2002-11-04 CN CN 02249191 patent/CN2578959Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964276A (en) * | 2010-09-26 | 2011-02-02 | 太平洋电子(昆山)有限公司 | Automatic reset temperature controller |
| CN102348354A (en) * | 2011-07-17 | 2012-02-08 | 太平洋电子(昆山)有限公司 | Dust-proof device for temperature controller |
| CN103575452A (en) * | 2012-07-18 | 2014-02-12 | 上海华虹Nec电子有限公司 | Pressure detection system used for low pressure furnace tube device |
| CN103575452B (en) * | 2012-07-18 | 2015-08-19 | 上海华虹宏力半导体制造有限公司 | Be applied to the pressure detecting system of low pressure furnace tube apparatus |
| CN109755070A (en) * | 2019-03-08 | 2019-05-14 | 佛山通宝华通控制器有限公司 | A kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch |
| CN109755070B (en) * | 2019-03-08 | 2024-06-07 | 佛山通宝华通控制器有限公司 | Single-pole double-throw explosion-proof pressure type temperature controller with auxiliary switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20090311 Decision number of declaring invalidation: 12971 Granted publication date: 20031008 |
|
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20090311 Decision number of declaring invalidation: 12971 Granted publication date: 20031008 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121104 Granted publication date: 20031008 |