CN105156197A - Paraffin type thermostat for vehicle - Google Patents
Paraffin type thermostat for vehicle Download PDFInfo
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- CN105156197A CN105156197A CN201510523419.XA CN201510523419A CN105156197A CN 105156197 A CN105156197 A CN 105156197A CN 201510523419 A CN201510523419 A CN 201510523419A CN 105156197 A CN105156197 A CN 105156197A
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- inner bag
- internal layer
- push rod
- gum cover
- hole
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Abstract
The invention discloses a paraffin type thermostat for a vehicle. The paraffin type thermostat for the vehicle comprises a support, shell, an anti-push rod with one end fixed to the support, an inner container, a plug and paraffin filler. The inner container, the plug and the paraffin filler are arranged in the shell. The paraffin is placed in a containing cavity formed when the plug and the inner container are sealed. The free end of the anti-push rod goes deep into the containing cavity. The free end, going deep into the containing cavity, of the anti-push rod is sleeved with a rubber sleeve. The upper end of the rubber sleeve extends out of the containing cavity along the outer side wall of the anti-push rod to be sealed together with the hole inner wall of a through hole. The paraffin type thermostat for the vehicle is characterized in that the inner container comprises an inner layer inner container body and an outer layer inner container body; a plurality of inner layer heat conduction blocks are arranged on the upper edge of the inner layer inner container body in the circumferential direction; outer layer heat conduction blocks corresponding to the inner layer heat conduction blocks are arranged on the outer layer inner container body; and the inner layer heat conduction blocks and the outer layer heat conduction blocks are attached or staggered together with rotation of the inner layer inner container body and the outer layer inner container body. The paraffin type thermostat for the vehicle is good in responding time consistency between various products.
Description
Technical field
The present invention relates to the technical field of car engine cooling system, specifically a kind of automobile-used waxtype thermostat.
Background technique
Thermostat automatically regulates according to the height of cooling water temperature the water yield entering radiator, changes the range of DO of water, to regulate the heat dissipation potential of cooling system, ensures that motor works in suitable temperature range.Thermostat must keep good state of the art, otherwise can have a strong impact on the normal work of motor.
Thermostat conventional is at present waxtype thermostat, when coolant temperature is lower than specified value, the paraffin in thermostat temperature sensor is solid-state, and thermostat valve kills engine and passage between radiator under the action of the spring, cooling liquid, through water pump return engine, carries out short circle in motor.When coolant temperature reaches specified value, paraffin starts thawing and gradually becomes liquid, volume is along with increase, and according to the incompressible characteristic of liquid, thus promote anti-push rod for providing the opposition of thermostat temperature sensor, the final main valve that drives is opened, at this moment cooling liquid is via radiator and thermostat valve, flow back to motor through water pump again, carry out major cycle, such as Authorization Notice No. is a kind of thermostat of CN201650435U.
But, because the paraffin thermal histories in temperature sensor is from outer heat conducting inward, therefore, outer paraffin is often paraffin melting prior to internal layer, therefore the change procedure of pressure is a process continued to increase, and this process between the pressure increase initial stage to the pressure increase trigger value that extremely anti-push rod is up is the response time, and the response time of thermostat main valve is the key factor determining thermostat works fine.Too fast or the excessively slow response time is all disadvantageous to thermostat work, and namely thermostat main valve was opened late, will cause engine overheat; Main valve is opened too early, then make engine warming up time lengthening, make engine temperature too low.
And the composition of respective its paraffin of waxtype thermostat, content and the factor such as the thermal conductivity difference of thermostat housing, the weight differential of anti-push rod are all to cause the response time of each waxtype thermostat there are differences, therefore the response time conformity of existing thermostat is poor.
Summary of the invention
Technical problem to be solved by this invention is: the automobile-used waxtype thermostat providing the response time high conformity between each product a kind of.
With regard to automobile-used waxtype thermostat of the present invention, the technical solution used in the present invention is: provide a kind of automobile-used waxtype thermostat, it comprises support, housing, one end is fixed on the anti-push rod on support, and the inner bag be located in housing, plug and paraffin sizing, paraffin sizing is placed in the holding cavity of plug and inner bag sealing formation, the free end of anti-push rod stretches in holding cavity by the through hole on plug, and cover has one for the gum cover of isolated paraffin sizing on anti-push rod stretches in holding cavity free end, the outer side wall of the anti-push rod of upper end edge of gum cover extends to outside holding cavity, and the hole inner wall sealing of gum cover and through hole, described inner bag comprises internal layer inner bag and is placed on the outer inner bag outside internal layer inner bag, be rotatably assorted between internal layer inner bag and outer inner bag, multiple internal layer heat-conducting block is circumferentially with along internal layer inner bag on internal layer inner bag, on the madial wall that internal layer heat-conducting block radially extends to internal layer inner bag and outer side wall, outer inner bag is provided with the outer heat-conducting block corresponding with each internal layer heat-conducting block, internal layer heat-conducting block and outer heat-conducting block are along with the rotation laminating of internal layer inner bag and outer inner bag or dislocation.
Described gum cover is the elastomer such as wall thickness such as grade with inner chamber, and the tubular structure of double side walls is made along any point on elastomer towards inner chamber sunken inside, Lubricants is enclosed in described inner chamber, the internal layer sidewall drive fit of anti-push rod and gum cover, the Lubricants in internal layer sidewall extruding inner chamber orders about outer sidewall and the through hole drive fit of gum cover.Be not difficult to find out, the working procedure of above-mentioned anti-push rod needs to carry out being slidably matched between the thermostat temperature sensor of accommodating paraffin, and will there be good sealing the joint be slidably matched.But the paraffin of above-mentioned liquefaction is that therefore this just has higher requirement to the dimensional accuracy of rubber seal in certain high temperature and high pressure state.And sealing will inevitably cause being subject to force of sliding friction change in anti-push rod sliding process greatly preferably, cause thermostat operating lag.Therefore, good airproof performance and response fast between there is contradiction often, therefore can only get certain equilibrium value between sealing and response time in prior art, and this also restricts a difficult problem for thermostat development of prior art exactly.And the present invention can well solve the contradiction between sealing and response time by the gum cover structural design of double side walls, the splendid response time can be accomplished on the basis ensureing good sealing.
The hole inwall of described through hole is provided with some annular seal grooves, and the outer sidewall of gum cover is formed and the friction tight projection of annular seal groove under the action of hydraulic force of Lubricants.
Gum cover is that elastomeric material is made.
Described waxtype thermostat comprises main valve and preloading spring, main valve is placed on housing, the lower end surface of the flange on the upper-end surface of main valve and housing leans, lower end and the support of preloading spring are fixed, the upper end of preloading spring and the lower end surface of main valve lean, and order about main valve and be pressed on housing.
After adopting above structure, automobile-used waxtype thermostat of the present invention compared with prior art has the following advantages: first, heat conduction between anti-push rod and paraffin is adjustable by heat-conducting block, therefore each thermostat can be debugged to the identical response time, the high conformity of product, secondly, isolated by the gum cover of bilayer between anti-push rod and paraffin sizing, and between the internal and external layer of gum cover, be provided with Lubricants, therefore when the volume of paraffin sizing slightly changes, even if namely outer paraffin sizing starts the Volume Changes anti-push rod response generation displacement of melting initial stage generation, its fast response time, secondly, the sealing of paraffin be rely on through hole on housing and and the outer sidewall of gum cover between press seal, be directly proportional between impacting force to sealing effect, and through hole and and the outer sidewall of gum cover between the change of impacting force can't cause the change of frictional force in anti-push rod sliding process, therefore, desirable sealing effect can be reached by the hydraulic coupling of closed containing cavity between the internal and external layer that improves gum cover.
Accompanying drawing explanation
Fig. 1 is the structural representation of automobile-used waxtype thermostat of the present invention.
Fig. 2 is the enlarged diagram of inner bag part of the present invention.
Fig. 3 is the sectional view in " A-A " direction in Fig. 2.
Fig. 4 is the enlarged diagram of anti-pusher section of the present invention.
Fig. 5 is another working state schematic representation of Fig. 4.
Fig. 6 is the anti-push rod of Fig. 4, gum cover and through hole schematic diagram before assembly.
Fig. 7 is the close-up schematic view coordinated between anti-push rod of the present invention and the through hole of plug.
Wherein, 1, support, 1.1, lower support frame, 1.2, upper bracket, 2, housing, 2.1, flange, 3, anti-push rod, 4, inner bag, 4.1, internal layer inner bag, 4.1.1, internal layer heat-conducting block, 4.2, outer inner bag, 4.2.1, outer heat-conducting block, 5, plug, 5.1, through hole, 5.2, annular seal groove, 6, paraffin sizing, 7, gum cover, 7.1, internal layer sidewall, 7.2, outer sidewall, 7.2.1, projection, 7.3, inner chamber, 8, main valve, 9, preloading spring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.But be to be understood that protection scope of the present invention not by the restriction of embodiment; it will be appreciated that; mentioned in following mode of execution of the present invention " on ", D score, "left", "right" all with the direction shown in each figure for benchmark; these words being used for limiting direction are only used to be convenient to illustrate, do not represent the restriction to the concrete technological scheme of the present invention.
As shown in the figure, the invention provides a kind of automobile-used waxtype thermostat, it comprises support 1, housing 2, one end is fixed on the anti-push rod 3 on support 1, and the inner bag 4 be located in housing 2, plug 5 and paraffin sizing 6, paraffin sizing 6 is placed in plug 5 and inner bag 4 seals in the holding cavity of formation, the free end of anti-push rod 3 stretches in holding cavity by the through hole 5.1 on plug 5, and cover has one for the gum cover 7 of isolated paraffin sizing 6 on anti-push rod 3 stretches in holding cavity free end, the outer side wall of the anti-push rod 3 of upper end edge of gum cover 7 extends to outside holding cavity, and the hole inner wall sealing of gum cover 7 and through hole 5.1, namely the upper end of gum cover 7 extends in through hole 5.1 or above through hole 5.1, the hole inwall of through hole 5.1 seals with corresponding gum cover 7, the outer inner bag 4.2 that described inner bag 4 comprises internal layer inner bag 4.1 and is placed on outside internal layer inner bag 4.1, be rotatably assorted between internal layer inner bag 4.1 and outer inner bag 4.2, multiple internal layer heat-conducting block 4.1.1 is circumferentially with along internal layer inner bag 4.1 on internal layer inner bag 4.1, on the madial wall that internal layer heat-conducting block 4.1.1 radially extends to internal layer inner bag 4.1 and outer side wall, outer inner bag 4.2 is provided with the outer heat-conducting block 4.2.1 corresponding with each internal layer heat-conducting block 4.1.1, internal layer heat-conducting block 4.1.1 and outer heat-conducting block 4.2.1 is along with the rotation laminating of internal layer inner bag 4.1 and outer inner bag 4.2 or dislocation.Certainly in order to prevent from debugging the internal layer inner bag 4.1.1 after putting in place and outer inner bag 4.1.2 in use relatively rotates and causes the response time to change, locking nut or all kinds of fastening piece such as latch or adjusting bolt between described internal layer inner bag 4.1.1 and outer inner bag 4.1.2, is provided with.
Described gum cover 7 is the elastomer such as wall thickness such as grade with inner chamber 7.3, and the tubular structure of double side walls is made along any point on elastomer towards inner chamber 7.3 sunken inside, Lubricants is enclosed in described inner chamber 7.3, internal layer sidewall 7.1 drive fit of anti-push rod 3 and gum cover 7, internal layer sidewall 7.1 Lubricants extruded in inner chamber 7.3 orders about outer sidewall 7.2 and through hole 5.1 drive fit of gum cover 7.
Support 1 comprises lower support frame 1.1 and upper bracket 1.2, lower support frame 1.1 and the removable connection of upper bracket 1.2.
The main component of above-mentioned paraffin sizing 6 is paraffin, and it, being heated and carrying out solid-state and liquid conversion in cooling procedure, is also commonly called as wax-wrapped pill in industry.Gum cover 7 is elastic rubber sleeve 7.
The hole inwall of described through hole 5.1 is provided with some annular seal grooves 5.2, and the outer sidewall 7.2 of gum cover 7 is formed and the friction tight protruding 7.2.1 of annular seal groove 5.2 under the action of hydraulic force of Lubricants.In order to prevent sharp-pointed place from puncturing outer sidewall 7.2, fillet process is all done at the knuckle place of described annular seal groove 5.2.
Gum cover 7 is made for elastomeric material.
Described waxtype thermostat comprises main valve 8 and preloading spring 9, main valve 8 is placed on housing 2, the lower end surface of the flange 2.1 on the upper-end surface of main valve 8 and housing 2 leans, lower end and the support 1 of preloading spring 9 are fixed, the upper end of preloading spring 9 and the lower end surface of main valve 8 lean, and order about main valve 8 and be pressed on housing 2.
The invention provides a kind of assembly method based on automobile-used waxtype thermostat of the present invention: it comprises
Step 1, main valve 8 to be placed on housing 2 from housing 2 lower end, and to make that main valve 8 is up to lean with flange 2.1 lower end surface;
Step 2, first the lower end of preloading spring 9 is fixed on the lower support frame 1.1 of support 1, then the housing 2 with main valve 8 is penetrated preloading spring 9 in the middle of preloading spring 9, make flange 2.1 on preloading spring 9 upper end, main valve 8 and housing 2 sequentially against;
Step 3, in housing 2, insert inner bag 4, the paraffin sizing 6 be in a liquid state after injection heating in inner bag 4, then fastening plug 5;
Step 4, upper bracket 1.2 and lower support frame 1.1 to be fixed, and order about preloading spring 9 by upper bracket 1.1 against the upper-end surface of main valve 8 and be compressed to Pre strained state;
Step 5, the end portion of the gum cover 7 of relaxed state is inserted in holding cavity by the through hole 5.1 on plug 5; Namely the inner chamber of gum cover 7 is identical with external pressure, and gum cover 7, in strip, is not yet recessed to form double-deck tubular structure;
Step 6, by the upper end of the gum cover 7 of the lower end abutment relaxed state of anti-push rod 3, when anti-push rod 3 and gum cover 7 are along the axial relative movement of through hole 5.1, the upper end that anti-push rod 3 orders about gum cover 7 forms double-deck tubular structure towards inner chamber 7.3 sunken inside of gum cover 7, i.e. double-deck " U " type structure.Meanwhile due to the reduction of cavity volume, so chamber pressure increases thus makes the outer sidewall 7.2 of gum cover 7 expand, final shutoff through hole 5.1;
Step 7, the upper end of anti-push rod 3 to be fixed on upper bracket 1.2.
Wherein can first rotate internal layer inner bag before fastening plug in step 3, the debugging response time is to setting value then fastening plug.
All Lubricants can be injected in the inner chamber 7.3 of gum cover 7 in arbitrary step before step 5.
Its working principle is, original state paraffin sizing is solid, main valve closes radiator line, the cooling liquid of motor is made directly to get back in motor through water pump, walk short circle, and when coolant temperature reaches specified value, paraffin sizing starts to melt, pressure thereupon in holding cavity is melted into direct ratio rising along with paraffin sizing, anti-push rod reacts on housing under pressure thus, order about housing and drive the descending unlatching of main valve, in the process, anti-push rod drives internal layer sidewall to slide, and be slidably matched by Lubricants between outer sidewall and internal layer sidewall, its force of sliding friction is almost negligible.
Simultaneously along with the thawing of paraffin sizing 6, the hydraulic coupling in holding cavity is passed in seal clearance, and the hydraulic coupling in fact in seal clearance also increases, and this also further improves the sealing between through hole hole inwall and outer sidewall.
Therefore in the present invention, pressure is higher, and its sealability is better, and the response of anti-push rod is faster.
Just preferred embodiment of the present invention is described above, but can not be interpreted as it is limitations on claims.The present invention is not only confined to above embodiment, and its concrete structure allows to change, and all various changes done in the protection domain of demand for independence of the present invention are all in protection scope of the present invention.
Claims (5)
1. an automobile-used waxtype thermostat, it comprises support (1), housing (2), one end is fixed on the anti-push rod (3) on support (1), and the inner bag (4) be located in housing (2), plug (5) and paraffin sizing (6), paraffin sizing (6) is placed in the holding cavity of plug (5) and inner bag (4) sealing formation, the free end of anti-push rod (3) stretches in holding cavity by the through hole (5.1) on plug (5), and cover has one for the gum cover (7) of isolated paraffin sizing (6) on anti-push rod (3) stretches in holding cavity free end, the outer side wall of the anti-push rod of upper end edge (3) of gum cover (7) extends to outside holding cavity, and the hole inner wall sealing of gum cover (7) and through hole (5.1), it is characterized in that: described inner bag (4) comprises internal layer inner bag (4.1) and is placed on internal layer inner bag (4.1) outer inner bag (4.2) outward, be rotatably assorted between internal layer inner bag (4.1) and outer inner bag (4.2), multiple internal layer heat-conducting block (4.1.1) is circumferentially with along internal layer inner bag (4.1) on internal layer inner bag (4.1), on the madial wall that internal layer heat-conducting block (4.1.1) radially extends to internal layer inner bag (4.1) and outer side wall, outer inner bag (4.2) is provided with the outer heat-conducting block (4.2.1) corresponding with each internal layer heat-conducting block (4.1.1), internal layer heat-conducting block (4.1.1) and outer heat-conducting block (4.2.1) are along with the rotation laminating of internal layer inner bag (4.1) and outer inner bag (4.2) or dislocation.
2. automobile-used waxtype thermostat according to claim 1, it is characterized in that: described gum cover (7) is the elastomer such as wall thickness such as grade with inner chamber (7.3), and the tubular structure of double side walls is made along any point on elastomer towards inner chamber (7.3) sunken inside, Lubricants is enclosed in described inner chamber (7.3), internal layer sidewall (7.1) drive fit of anti-push rod (3) and gum cover (7), Lubricants in internal layer sidewall (7.1) extruding inner chamber (7.3) orders about the outer sidewall (7.2) of gum cover (7) and through hole (5.1) drive fit.
3. automobile-used waxtype thermostat according to claim 1, it is characterized in that: the hole inwall of described through hole (5.1) is provided with some annular seal grooves (5.2), the outer sidewall (7.2) of gum cover (7) is formed and annular seal groove (5.2) friction tight projection (7.2.1) under the action of hydraulic force of Lubricants.
4. automobile-used waxtype thermostat according to claim 1, is characterized in that: gum cover (7) is made for elastomeric material.
5. automobile-used waxtype thermostat according to claim 1, it is characterized in that: described waxtype thermostat comprises main valve (8) and preloading spring (9), main valve (8) is placed on housing (2), the lower end surface of the flange (2.1) on the upper-end surface of main valve (8) and housing (2) leans, the lower end of preloading spring (9) and support (1) are fixed, the upper end of preloading spring (9) and the lower end surface of main valve (8) lean, and order about main valve (8) and be pressed on housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523419.XA CN105156197B (en) | 2015-08-24 | 2015-08-24 | Automobile-used waxtype thermostat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523419.XA CN105156197B (en) | 2015-08-24 | 2015-08-24 | Automobile-used waxtype thermostat |
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| Publication Number | Publication Date |
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| CN105156197A true CN105156197A (en) | 2015-12-16 |
| CN105156197B CN105156197B (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510523419.XA Active CN105156197B (en) | 2015-08-24 | 2015-08-24 | Automobile-used waxtype thermostat |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971713A (en) * | 2016-06-17 | 2016-09-28 | 潍柴动力股份有限公司 | Wax type thermostat and working state monitoring and control method thereof |
| KR102089778B1 (en) * | 2019-08-06 | 2020-03-17 | (주) 오토탑 | Electronic Thermostat |
| CN111535918A (en) * | 2019-12-13 | 2020-08-14 | 宗立君 | Thermostat |
| CN112857991A (en) * | 2020-12-30 | 2021-05-28 | 苏州三德精密机械有限公司 | Automatic extrusion structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201650435U (en) * | 2009-09-30 | 2010-11-24 | 比亚迪股份有限公司 | Thermostat |
| CN102305125A (en) * | 2011-09-02 | 2012-01-04 | 万泰工业（大连）有限公司 | Paraffin thermostat |
| CN102705061A (en) * | 2012-06-25 | 2012-10-03 | 曲阜天博汽车零部件制造有限公司 | Double-control thermosistor |
| JP5324006B1 (en) * | 2013-02-08 | 2013-10-23 | 幸雄 大西 | Thermo element and thermostat |
-
2015
- 2015-08-24 CN CN201510523419.XA patent/CN105156197B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201650435U (en) * | 2009-09-30 | 2010-11-24 | 比亚迪股份有限公司 | Thermostat |
| CN102305125A (en) * | 2011-09-02 | 2012-01-04 | 万泰工业（大连）有限公司 | Paraffin thermostat |
| CN102705061A (en) * | 2012-06-25 | 2012-10-03 | 曲阜天博汽车零部件制造有限公司 | Double-control thermosistor |
| JP5324006B1 (en) * | 2013-02-08 | 2013-10-23 | 幸雄 大西 | Thermo element and thermostat |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971713A (en) * | 2016-06-17 | 2016-09-28 | 潍柴动力股份有限公司 | Wax type thermostat and working state monitoring and control method thereof |
| KR102089778B1 (en) * | 2019-08-06 | 2020-03-17 | (주) 오토탑 | Electronic Thermostat |
| CN111535918A (en) * | 2019-12-13 | 2020-08-14 | 宗立君 | Thermostat |
| CN112857991A (en) * | 2020-12-30 | 2021-05-28 | 苏州三德精密机械有限公司 | Automatic extrusion structure |
| CN112857991B (en) * | 2020-12-30 | 2022-12-30 | 苏州三德精密机械有限公司 | Automatic extrusion structure |
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| Publication number | Publication date |
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| CN105156197B (en) | 2017-08-25 |
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Effective date of registration: 20191220 Address after: 225200 No. 2 Tengfei Road, Dinggou Town, Jiangdu District, Yangzhou City, Jiangsu Province Patentee after: Yangzhou Dewell Automobile Shock Absorber Co., Ltd. Address before: 315136 Shanxi village, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee before: Ningbo Yulong Auto Pump Co., Ltd. |
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