CN109755070A - A kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch - Google Patents

A kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch Download PDF

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Publication number
CN109755070A
CN109755070A CN201910176652.3A CN201910176652A CN109755070A CN 109755070 A CN109755070 A CN 109755070A CN 201910176652 A CN201910176652 A CN 201910176652A CN 109755070 A CN109755070 A CN 109755070A
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switch
auxiliary
temperature controller
explosion
partition
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CN201910176652.3A
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CN109755070B (en
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陈国辉
区锡光
谭伟光
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FOSHAN TONGBAO HUATONG CONTROLLER Co Ltd
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FOSHAN TONGBAO HUATONG CONTROLLER Co Ltd
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Abstract

A kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch, the switch sections of the temperature controller form double cavity structure explosion-proof chamber by partition, main switch case assembly and switch cap assemblies, using sliding hole axle tight fit structure between primary push rod, auxiliary push-rod and partition, tight fit, fit clearance≤0.1mm, length of fit >=2mm are used between partition, main switch case assembly and the plate body for switching cap assemblies and between corresponding plate body and public terminal, master control terminal, auxiliary terminal and additional terminal.Since the components of electric spark can will likely be generated with minimum space and exit is enclosed in a double cavity structure seal chamber, so being able to achieve the explosion prevention function of the single-pole double throw compression-type temperature controller with auxiliary switch, former temperature controller outer dimension will not be increased.

Description

A kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch
Technical field
The present invention relates to compression-type temperature controller technical field, in particular to a kind of anti-detonation pressure of the single-pole double throw with auxiliary switch Power formula temperature controller.
Background technique
Compression-type temperature controller is widely used in the refrigeration control of refrigerator, refrigerator etc., by the temperature for incuding box house Degree lifting enables its microswitch on-off, to control the start-stop of refrigeration compressor and realize temperature control.Compression-type temperature controller Main switch component usually enters alternating current power supply circuit with refrigeration compressor series connection, makes refrigerator, cold by controlling compressor start-stop Cabinet obtains preset temperature range.Some compression-type temperature controllers are additionally provided with an auxiliary switch component, connection door lamp switch etc. its Its electrical part, is connected in general, all electric appliances are disconnected when adjustment axis is screwed to forced shutdown position.Some pressure type temperature Control device also requires main switch component to have single-pole double throw structure, and increased contact is connected when compressor disconnects, for connecing one Indicator light is to indicate that cryogenic temperature has reached desirable value.
Due to the needs of environmental protection and energy saving, more and more refrigerators, refrigerator etc. use the flammable refrigerant such as R600a, it is desirable that Temperature controller has explosion prevention function, is set off an explosion with preventing contingency coolant leakage spark ignition caused by temperature controller contact Accident.Anti-burst temperature controller generally uses " closed tripper " structure, that is, allow the mixture of flammable refrigerant and air into Enter in explosion-proof chamber and by contact spark ignition, but this combustion explosion will not destroy explosion-proof chamber and can not travel to outside chamber.In State's patent CN2412189Y " explosion-proof pressure thermoregulator " discloses such a blast resistance construction, is by switch enclosure and partition structure At explosion-proof chamber, push rod cooperates sliding action to drive microswitch by passing through the hole axle of partition, by sufficiently small fit clearance The propagation of detonation is prevented with sufficiently long length of fit.But the blast resistance construction of the patent disclosure is only single-pole single-throw(SPST structure; And between partition and switch enclosure, terminal be pierced by switch enclosure will epoxy resin sealing, production operation trouble, need a period of time Epoxy resin cure is waited, just can be carried out next work step, thus production efficiency is lower.Become by the components that epoxy resin encapsulates Non-disconnectable inloading part.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of single-pole double throw explosion-proof pressure formula temperature control with auxiliary switch Device.It will generate active, static contact and the single-pole double-throw switch (SPDT) of arc spark, auxiliary switch difference by two-chamber sealing structure It is sealed in two small seal chambers of internal capacity, had both been able to achieve explosion-proof purpose, also without increasing former compression-type temperature controller shape Size facilitates the design of refrigerator, refrigerator producer to temperature controller installation site
Technical solution proposed by the invention is such that
A kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch, including ontology 1, bellows lever 2, capsule stack 3, master It switchs case assembly 5, shutdown lever 9, shutdown plate 10, shutdown spring 11, adjust axle assembly 12, main spring 13, sliding block 14, it is described For bellows lever 2 through two sides fulcrum 2-1 expansion bearing on the corresponding two sidewalls of ontology 1, the shutdown lever 9 is mounted on ontology In 1 one side wall and swing pivot is formed, and is swung by the driving for adjusting axle assembly 12, partition 4, switch cover group are equipped with Part 6, primary push rod 7, auxiliary push-rod 8, connection reed 6-1 and auxiliary switch, the partition 4, main switch case assembly 5, switch cover group Part 6 is successively fitted close constitutes double cavity structure explosion-proof chamber from top to bottom, and the rectangular primary push rod 7 passes through the partition 4 Slot 4-1 is slidably connected, and the round hole 4-2 that the circular auxiliary push-rod 8 passes through the partition 4 is slidably connected, The tune gap screw 5- of connection one end reed 6-1 and the conductive metal in main switch case assembly 5 for being located in the switch cap assemblies 6 The connection of 7 Elastic Contacts, the connection reed 6-1 other end are connect with additional terminal 6-2 Elastic Contact.
Between the plate body of 5 surrounding of the partition 4 and main switch case assembly and with public terminal 5-2, master control terminal 5-3, auxiliary It helps between terminal 5-4 as tight fit, fit clearance≤0.1mm, length of fit >=2mm.
The 5 plate body two sides of main body case assembly are equipped with 4 overhead kick convex portion 5-1, and the switch cap assemblies 6 pass through 4 overhead kicks Convex portion 5-1 and the close snapping of the main switch case assembly 5, the surrounding plate bodys of the main switch case assembly 5 and switch cap assemblies 6 it Between and additional terminal 6-2 and switch 6 plate body of cap assemblies between be tight fit, fit clearance≤0.1mm, length of fit >=2mm.
The working principle and the course of work of this single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch are such that work as When temperature-sensitive temperature rises or falls, 3 expansion or shrinkage of capsule stack pushes bellows lever 2 and swings around fulcrum 2-1, master is pushed to open Close being switched on or switched off for the main contact switch of case assembly 5.It turns and adjusts axle assembly 12, sliding block 14 changes with the lift of regulating cam of temp Become and change position, by the effect of the plate 10 that shuts down, shut down spring 11, main spring 13, and temperature controller is made to change operating temperature.When When main contact switch disconnects, active contact 5-6 makes the 1st end by adjusting gap screw 5-7 and switching the connection reed 6-1 of cap assemblies 6 Sub- 6-2 obtain it is electric, to realize the single-pole double-throw switch (SPDT) function of temperature controller.When adjusting axle assembly 12 is screwed to forced shutdown position It sets, driving shutdown lever 9 is swung and disconnects temperature controller auxiliary switch by cam.
Due to the hole axle of primary push rod 7 and auxiliary push-rod 8 and partition 4 be slidably matched with sufficiently small fit clearance (≤ 0.1mm) and sufficiently long length of fit (>=2mm), and surrounding plate body, the main switch case assembly of partition 4 and main switch case assembly 5 5 and switch cap assemblies 6 surrounding plate body cooperation all have sufficiently small fit clearance (≤0.1mm) and sufficiently long cooperation length It spends (>=2mm), and public terminal 5-2, master control terminal 5-3, auxiliary terminal 5-4, additional terminal 6-2 stretch out outside corresponding plate body Periphery cooperation be that close with sufficiently small fit clearance (≤0.1mm) and sufficiently long length of fit (>=2mm) being matched It closes, thus even if explosive gas enters inside switch enclosure and by contact spark ignition through gap, can not ignite outside Explosive gas, to realize the explosion prevention function of the single-pole double throw compression-type temperature controller with auxiliary switch.
Compared with prior art, the present invention has following remarkable result:
(1) present invention is due to being provided with partition, and makes two to slide close-fitting primary push rod and auxiliary push-rod with partition, from original The pendulum motion come is changed into linear motion, realizes the temperature control on-off and forced shutdown of temperature controller, meanwhile, which also becomes Important component in this temperature controller blast resistance construction.
(2) present invention is additionally arranged the switch cover of electric connection reed using the conduction property of the tune gap screw of metal Component, realizes the movement of temperature controller single-pole double-throw switch (SPDT), which also becomes important in this temperature controller blast resistance construction Component.
(3) the main innovation of the present invention is in the main contact switch for most possibly generating arc spark, assists opening A double cavity structure seal chamber is designed with minimum space around pass and single-pole double-throw switch (SPDT), realizes that the hilted broadsword with auxiliary switch is double Throw the explosion prevention function of compression-type temperature controller.Simultaneously also without increasing the former non-explosion-proof single-pole double throw pressure type temperature with auxiliary switch Device outer dimension is controlled, very big convenience is provided to the design of temperature controller installation site for refrigerator, refrigerator producer.
Detailed description of the invention
Fig. 1 is the structural representation of the single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch of one embodiment of the invention Figure.
Fig. 2 is the schematic top plan view of partition shown in Fig. 1.
Fig. 3 is the schematic top plan view of main switch case assembly shown in Fig. 1.
Fig. 4 is the A-A schematic cross-sectional view of Fig. 3.
Fig. 5 is the schematic top plan view of switch cap assemblies shown in Fig. 1.
Fig. 6 is partition, switch case assembly and the expanded view for switching cap assemblies shown in FIG. 1.
Figure label indicates: 1. ontologies, 2. bellows levers, 2-1. fulcrum, 3. capsule stacks, 4. partitions, 4-1. rectangle Hole, 4-2. round hole, 5. main switch case assemblies, 5-1. overhead kick convex portion, 5-2. public terminal, 5-3. master control terminal, 5-4. auxiliary Terminal, the main static contact of 5-5., 5-6. active contact, 5-7. tune gap screw, 6. switch cap assemblies, 6-1. connection reed, 6-2. are attached Adding terminal, 7. primary push rods, 8. auxiliary push-rods, 9. shutdown levers, 10. shutdown plates, 11. shutdown springs, 12. adjust axle assembly, 13. main spring, 14. sliding blocks.
Specific embodiment
The present invention is further elaborated by following example.
Referring to shown in Fig. 1 to Fig. 6, a kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch, by ontology 1, film Box lever 2, capsule stack 3, partition 4, main switch case assembly 5, switch cap assemblies 6, primary push rod 7, auxiliary push-rod 8, shutdown lever 9, shut down plate 10, shutdown spring 11, adjusting axle assembly 12, main spring 13 and the composition of sliding block 14, the partition 4, main switch box Component 5, switch cap assemblies 6 successively closely combine to form two cavity configuration explosion-proof chambers from top to bottom, and the rectangular primary push rod 7 is worn The slot 4-1 for crossing the partition 4 is slidably connected, and the circular auxiliary push-rod 8 passes through the round hole 4- of the partition 4 2 are slidably connected, and mounting means is: primary push rod 7, auxiliary push-rod 8 being first packed into partition 4, then partition 4 is packed into main switch box The surrounding plate body of component 5, then the two is riveted on ontology 1, partition 4 and main switch case assembly 5 is tight fit, fit clearance≤ 0.1mm, length of fit >=2mm, three, 4 top of partition protrusion crimp public terminal 5-2, the master of main switch case assembly 5 respectively Control terminal 5-3, auxiliary terminal 5-4 corresponding site be also fit clearance≤0.1mm, length of fit >=2mm using tight fit, After regulating gap screw 5-7 by action temperature property requirement needed for temperature controller, switch cap assemblies 6 are passed through 4 barbs Convex portion 5-1 and 5 snapping of main switch case assembly, surrounding plate body is between cooperating between main switch case assembly 5 and switch cap assemblies 6 at this time Gap≤0.1mm, length of fit >=2mm tight fit.The connection reed 6-1 of a piece of conduction is equipped in the switch cap assemblies 6, One end is connect with the tune gap screw 5-7 Elastic Contact of the conductive metal in main switch case assembly 5, the other end and additional terminal The connection of 6-2 Elastic Contact.The periphery that additional terminal 6-2 stretches out outside switch cap assemblies 6, which is matched, is combined into fit clearance≤0.1mm, cooperation Length >=2mm tight fit.The bellows lever 2 is supported on the corresponding two sidewalls of ontology 1 by two sides fulcrum 2-1, with Two sides fulcrum 2-1 is center of rotation reciprocally swinging, and right half section of promotion push rod 7 pushes the main switch in main switch case assembly 5 again That is the on-off movement between public terminal 5-2 and master control terminal 5-3.When main switch disconnect when, i.e. active contact 5-6 with Main static contact 5-5 separation, the back side of active contact 5-6 is contacted with the tune gap screw 5-7 of conductive metal at this time, passes through conductive company The connection for meeting reed 6-1 makes public terminal 5-2 connect electric with additional terminal 6-2, to obtain the reverse of single-pole double-throw switch (SPDT) Power supply, since reverse power supply circuit connects load very little (such as indicator light), such power supply circuit construction is it is ensured that it can It works by ground.The shutdown lever 9 is mounted in 1 one side wall of ontology and forms swing pivot, by the adjusting axle assembly 12 Driving and swing, thus push auxiliary push-rod 8 push again the auxiliary switch in main switch case assembly 5 i.e. public terminal 5-2 with it is auxiliary Help the disconnection between terminal 5-4.
The sliding of the hole axle of primary push rod 7 and auxiliary push-rod 8 and partition 4, which is fitted close to have, meets the sufficiently small of requirement of explosion proof Fit clearance (≤0.1mm) and sufficiently long length of fit (>=2mm), but remain to swimmingly slide.Public terminal 5-2, master control The cooperation that terminal 5-3, auxiliary terminal 5-4, additional terminal 6-2 stretch out hull outside is to be fitted close, and basic gapless meets Requirement of explosion proof.Cooperation between partition 4 and main switch case assembly 5, between main switch case assembly 5 and switch cap assemblies 6 is tight Close fit, basic gapless, meets requirement of explosion proof.Partition 4, main switch case assembly 5, switch cap assemblies 6 are without other holes and outside Boundary communicates, and three constitutes a double cavity structure explosion-proof chamber.It surveys this temperature controller and has passed through blasting test.

Claims (3)

1. a kind of single-pole double throw explosion-proof pressure formula temperature controller with auxiliary switch, including ontology (1), bellows lever (2), bellows group Part (3), shutdown lever (9), shutdown plate (10), shutdown spring (11), adjusts axle assembly (12), is main main switch case assembly (5) Spring (13), sliding block (14), the bellows lever (2) is by two sides fulcrum (2-1) expansion bearing in the corresponding two sides of ontology (1) On wall, the shutdown lever (9) is mounted in ontology (1) one side wall and forms swing pivot, and by the adjusting axle assembly 12 driving and swing, it is characterised in that: be equipped with partition (4), switch cap assemblies (6), primary push rod (7), auxiliary push-rod (8), even Reed (6-1) and auxiliary switch are connect, the partition (4), main switch case assembly (5), switch cap assemblies (6) are successively tight from top to bottom Close fit constitutes double cavity structure explosion-proof chamber, and the rectangular primary push rod (7) passes through the slot (4-1) of the partition (4) It is slidably connected, the round hole (4-2) that the circular auxiliary push-rod (8) passes through the partition (4) is slidably connected, and is located at institute State the tune gap screw of the conductive metal in connection reed one end (6-1) and main switch case assembly (5) in switch cap assemblies (6) The connection of (5-7) Elastic Contact, connection reed (6-1) other end are connect with additional terminal (6-2) Elastic Contact.
2. the single-pole double throw explosion-proof pressure formula temperature controller according to claim 1 with auxiliary switch, it is characterised in that: described Between partition (4) and the plate body of main switch case assembly (5) surrounding and with public terminal (5-2), master control terminal (5-3), auxiliary end It is tight fit, fit clearance≤0.1mm, length of fit >=2mm between sub (5-4).
3. the single-pole double throw explosion-proof pressure formula temperature controller according to claim 1 with auxiliary switch, it is characterised in that: described Main body case assembly (5) plate body two sides are equipped with 4 overhead kick convex portions (5-1), and the switch cap assemblies (6) pass through 4 overhead kick convex portion (5- 1) with the close snapping of the main switch case assembly (5), the main switch case assembly (5) and switch cap assemblies (6) surrounding plate body Between and additional terminal (6-2) and switch cap assemblies (6) plate body between be tight fit, fit clearance≤0.1mm, length of fit >= 2mm。
CN201910176652.3A 2019-03-08 2019-03-08 Single-pole double-throw explosion-proof pressure type temperature controller with auxiliary switch Active CN109755070B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2578959Y (en) * 2002-11-04 2003-10-08 佛山通宝股份有限公司 Explosion-proof pressure temperature controller with assistant switch
CN101604597A (en) * 2009-05-14 2009-12-16 佛山通宝股份有限公司 A kind of compression-type temperature controller
CN103915286A (en) * 2014-03-24 2014-07-09 上海俊乐制冷自控元件有限公司 Single-pole double-throw pressure controller
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
CN206516564U (en) * 2017-03-08 2017-09-22 佛山通宝华通控制器有限公司 A kind of compression-type temperature controller forced shutdown structure
CN209434091U (en) * 2019-03-08 2019-09-24 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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2578959Y (en) * 2002-11-04 2003-10-08 佛山通宝股份有限公司 Explosion-proof pressure temperature controller with assistant switch
CN101604597A (en) * 2009-05-14 2009-12-16 佛山通宝股份有限公司 A kind of compression-type temperature controller
CN103915286A (en) * 2014-03-24 2014-07-09 上海俊乐制冷自控元件有限公司 Single-pole double-throw pressure controller
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
CN206516564U (en) * 2017-03-08 2017-09-22 佛山通宝华通控制器有限公司 A kind of compression-type temperature controller forced shutdown structure
CN209434091U (en) * 2019-03-08 2019-09-24 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

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