CN2412189Y - Explosion-proof pressure thermoregulator - Google Patents
Explosion-proof pressure thermoregulator Download PDFInfo
- Publication number
- CN2412189Y CN2412189Y CN 00231340 CN00231340U CN2412189Y CN 2412189 Y CN2412189 Y CN 2412189Y CN 00231340 CN00231340 CN 00231340 CN 00231340 U CN00231340 U CN 00231340U CN 2412189 Y CN2412189 Y CN 2412189Y
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- CN
- China
- Prior art keywords
- explosion
- push rod
- temperature controller
- switch enclosure
- dividing plate
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- Expired - Lifetime
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Abstract
The utility model relates to an explosion-proof pressure type thermoregulator. The inner part of a main body is provided with a corrugated pipe, a bearing plate, a regulation tension spring, a switch box, a partition plate, a wiring terminal and a contact subassembly, wherein, the middle upper part of the center of the partition plate is provided with a high boss, the height of the high boss is not smaller than the thickness of the partition plate, a cylindrical push rod is movably matched with a circular through hole of the boss, both ends of the cylindrical push rod are respectively contacted with a movable contact sheet and the bearing plate by means of point contact, and the junction of the switch box and the partition plate and the junction of the terminal and the switch box are uniformly sealed by epoxy resin. The utility model has the advantage that only a small improvement is made to the inner structure and sealing processing is carried out to a microswitch box, and the explosion-proof function can be realized on the basis of the existing pressure type thermoregulator.
Description
The utility model relates to mechanical type temperature control technology field, is used to the explosion-proof type compression-type temperature controller of controlling the refrigeration compressor start and shutting down in particularly a kind of refrigerator.
Compression-type temperature controller is widely used in the control of refrigerator refrigeration, existing compression-type temperature controller structure is referring to shown in Figure 1, it by within it bellows 2, bearing plate 3 of main body 1 and dress, regulate extension spring 13, push rod 4, microswitch and form, microswitch by switch enclosure 10, moving contact 6, static contact 5, movable contact spring 11, bend spring 7, two binding posts 8,9, dividing plates 12 are formed.Be provided with an emptying aperture in way-board 12 middle and upper parts, push rod 4 is flat-shaped, and push rod 4 passes this emptying aperture, and its two ends are connected with support pattern with movable contact spring 11 and bearing plate 3 respectively.Because push rod 4 is to move in the upper and lower and left and right space of this emptying aperture, so the very big gap of emptying aperture existence on push rod 4 and the dividing plate that is passed.Also being in non-tight between binding post 8,9 and switch enclosure 10, dividing plate 12 and the switch enclosure 10 is connected.Therefore, the switch contact of existing compression-type temperature controller all 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, on every side if there is flammable explosive gas then can set off an explosion.At present, because environmental protection requirement, some refrigerator have adopted hydrocarbon flammable and explosive substances such as (HC) as working medium (refrigerant), and wherein the evaporimeter of some refrigerator is mounted in the casing, the temperature controller body also is mounted in the casing, just in case during the evaporimeter refrigerant leakage, the arc spark that microswitch produces in the compression-type temperature controller may be lighted these working medium and cause an explosion accident.
The purpose of this utility model is to provide a kind of explosion-proof type compression-type temperature controller, can prevent the generation of explosion accident when contingency is leaked fuel gas near it.
The purpose of this utility model is achieved in that a kind of explosion-proof type compression-type temperature controller, bellows, bearing plate, adjusting extension spring, microswitch are housed in this temperature controller main body, this microswitch is that dividing plate, binding post, dynamic and static contact, movable contact spring, bow spring, the push rod of bmm formed by switch enclosure, thickness, described dividing plate middle and upper part is provided with the high boss that highly is not less than b, and being provided with round tube hole in these boss central authorities, contact is connected with bearing plate point with movable contact spring respectively at its two ends; Described switch enclosure and dividing plate junction surface epoxy sealing; Binding post and switch enclosure junction surface epoxy sealing.Described block board thickness b=1.0-1.2mm.
Compared with prior art, the utlity model has following advantage and good effect:
(1) because 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 imflammable gas or steam yet.This structure belongs to closed tripper, meets the requirement of Ex " n " the type electric 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 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 temperature controller appearance and size do not increase, and is the same with former compression-type temperature controller basically, makes things convenient for the installation site of refrigerator producer design temperature controller.
Fig. 1 is existing a kind of compression-type temperature controller structural representation.
Fig. 2 is the explosion-proof type compression-type temperature controller structural representation of an embodiment of the utility model.
By following embodiment the utility model is further elaborated.
Referring to shown in Figure 2, an embodiment explosion-proof type of the utility model compression-type temperature controller is made up of main body 1 and microswitch, bellows 2, bearing plate 3 are housed in main body 1, regulate extension spring 13 and microswitch, this microswitch is made up of switch enclosure 10, dividing plate 12, binding post 8,9, moving contact 6, static contact 5, movable contact spring 11, bow spring 7, push rod 4.In the present embodiment, the thickness of dividing plate 12 is 1.1mm, being provided with in dividing plate 12 middle and upper parts highly is 1, the high boss 14 of 2mm, these boss 14 central authorities are drilled with a round tube hole, and push rod 4 is cylindrical, two ends are cone, be provided with shoulder near movable contact spring 11 1 sides, the round tube hole of this push rod 4 and high boss 14 is for movingly, and push rod 4 two ends contact with 3 of movable contact spring 11 and bearing plates respectively and join.Static contact 5 passes switch enclosure 10 by binding post 8 and draws the outside, and moving contact 6 passes switch enclosure 10 by movable contact spring 11 and binding post 9 and draws the outside.Switch enclosure 10 and dividing plate 12 junction surface epoxy sealings.Epoxy sealing is also used at the junction surface of binding post 8,9 and switch enclosure 10.Microswitch shown in Figure 2 is in off-state, and when the temperature rising, bellows 2 expansions promote push rods 4 and slowly move to left, and when arriving critical localisation, bow spring 7 overturns, the microswitch connection; Otherwise switch disconnects.Because the round tube hole of push rod 4 and dividing plate 12 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, meet the requirement of IEC explosion-proof criteria Exn type antiknock device.
Claims (2)
1, a kind of explosion-proof type compression-type temperature controller, bellows, bearing plate, adjusting extension spring, microswitch are housed in this temperature controller main body, this microswitch is that dividing plate, binding post, dynamic and static contact, movable contact spring, bow spring, the push rod of b formed by switch enclosure, thickness, it is characterized in that described dividing plate middle and upper part is provided with the high boss that highly is not less than b, and be provided with round tube hole in these boss central authorities; Described push rod is cylindrical, passes this round tube hole in mode movingly, and contact is connected with bearing plate point with movable contact spring respectively at its two ends; Described switch enclosure and dividing plate junction surface epoxy sealing; Binding post and switch enclosure junction surface epoxy sealing.
2, explosion-proof type compression-type temperature controller according to claim 1 is characterized in that described block board thickness b=1.0-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00231340 CN2412189Y (en) | 2000-03-31 | 2000-03-31 | Explosion-proof pressure thermoregulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00231340 CN2412189Y (en) | 2000-03-31 | 2000-03-31 | Explosion-proof pressure thermoregulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2412189Y true CN2412189Y (en) | 2000-12-27 |
Family
ID=33594255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00231340 Expired - Lifetime CN2412189Y (en) | 2000-03-31 | 2000-03-31 | Explosion-proof pressure thermoregulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2412189Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591651A (en) * | 2013-11-21 | 2014-02-19 | 国网安徽省电力公司滁州供电公司 | Cooling system of outdoor unit of precision air conditioner |
| 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 |
-
2000
- 2000-03-31 CN CN 00231340 patent/CN2412189Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591651A (en) * | 2013-11-21 | 2014-02-19 | 国网安徽省电力公司滁州供电公司 | Cooling system of outdoor unit of precision air conditioner |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20001227 |