CN105041448A - Paraffin type thermostat - Google Patents
Paraffin type thermostat Download PDFInfo
- Publication number
- CN105041448A CN105041448A CN201510523482.3A CN201510523482A CN105041448A CN 105041448 A CN105041448 A CN 105041448A CN 201510523482 A CN201510523482 A CN 201510523482A CN 105041448 A CN105041448 A CN 105041448A
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- push rod
- gum cover
- paraffin
- main valve
- housing
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Abstract
The invention discloses a paraffin type thermostat. The paraffin type thermostat comprises a support, a 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 filler is contained in a containing cavity formed by the plug and the inner container. The free end of the anti-push rod stretches into the containing cavity and is sleeved with a rubber sleeve. The paraffin type thermostat is characterized in that the rubber sleeve is an equal-wall-thickness elastomer with an inner cavity; any point along the elastormer is sunken towards the interior of the inner cavity so that a tubular structure with two layers of side walls can be manufactured; lubricating liquid is sealed in the inner cavity; the anti-push rod is closely matched with the inner layer side wall of the rubber sleeve; and the outer layer side wall of the rubber sleeve is closely matched with a through hole. The paraffin type thermostat is good in sealing performance and fast in response.
Description
Technical field
The present invention relates to the technical field of car engine cooling system, specifically a kind of 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.
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.
In addition, 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, anti-push rod is then bond with internal layer paraffin, therefore only have the anti-push rod when internal layer paraffin melts completely to work, and this process just causes the delay of response time, and the response time of thermostat main valve is the key factor determining thermostat works fine.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.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of good airproof performance and respond fast waxtype thermostat.
The technical solution used in the present invention is: the waxtype thermostat providing a kind of motor car engine, 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, it is characterized in that: 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, Lubricants in internal layer sidewall extruding inner chamber orders about outer sidewall and the through hole drive fit of gum cover.
The hole inwall of described through hole is provided with some annular seal grooves, and the outer membrane layer corresponding to annular seal groove 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, waxtype thermostat of the present invention compared with prior art has the following advantages: first, 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 waxtype thermostat of the present invention.
Fig. 2 is the enlarged diagram of anti-pusher section of the present invention.
Fig. 3 is another working state schematic representation of Fig. 2.
Fig. 4 is the anti-push rod of Fig. 2, gum cover and through hole schematic diagram before assembly.
Fig. 5 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, 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 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, 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 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.
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 the inner chamber 7.3 of gum cover 7, and the hydraulic coupling in its inner chamber 7.3 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 (4)
1. a 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, 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.
2. 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.
3. waxtype thermostat according to claim 1, is characterized in that: gum cover (7) is made for elastomeric material.
4. 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 |
|---|---|---|---|
| CN201510523482.3A CN105041448B (en) | 2015-08-24 | 2015-08-24 | Waxtype thermostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523482.3A CN105041448B (en) | 2015-08-24 | 2015-08-24 | Waxtype thermostat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105041448A true CN105041448A (en) | 2015-11-11 |
| CN105041448B CN105041448B (en) | 2017-09-12 |
Family
ID=54448358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510523482.3A Active CN105041448B (en) | 2015-08-24 | 2015-08-24 | Waxtype thermostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105041448B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679211A (en) * | 2018-06-04 | 2018-10-19 | 北京长城华冠汽车技术开发有限公司 | Oil cooling system and automobile |
| WO2019071540A1 (en) * | 2017-10-12 | 2019-04-18 | 舍弗勒技术股份两合公司 | Vehicle grille driving device, vehicle grille assembly and vehicle |
| CN112096504A (en) * | 2020-09-22 | 2020-12-18 | 宁波兴慈热动电器有限公司 | Thermostat |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0566101A1 (en) * | 1992-04-15 | 1993-10-20 | Yoshikazu Kuze | Thermo-actuator |
| US5381951A (en) * | 1992-02-14 | 1995-01-17 | Nicolas Pinilla | Thermostatic safety valve for a hydraulic cooling circuit |
| CN1122407A (en) * | 1993-08-13 | 1996-05-15 | 久世义一 | Temperature control system for an internal combustion engine |
| JPH11117743A (en) * | 1997-10-16 | 1999-04-27 | Giichi Kuze | Wax type thermostat of high cooling efficiency for automobile engine |
| CN1082611C (en) * | 1997-04-11 | 2002-04-10 | 久世义一 | Thermostat for automotive engine cooling system |
| CN201568127U (en) * | 2009-10-23 | 2010-09-01 | 浙江吉利汽车研究院有限公司 | Automobile engine thermoregulator |
-
2015
- 2015-08-24 CN CN201510523482.3A patent/CN105041448B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5381951A (en) * | 1992-02-14 | 1995-01-17 | Nicolas Pinilla | Thermostatic safety valve for a hydraulic cooling circuit |
| EP0566101A1 (en) * | 1992-04-15 | 1993-10-20 | Yoshikazu Kuze | Thermo-actuator |
| CN1122407A (en) * | 1993-08-13 | 1996-05-15 | 久世义一 | Temperature control system for an internal combustion engine |
| CN1082611C (en) * | 1997-04-11 | 2002-04-10 | 久世义一 | Thermostat for automotive engine cooling system |
| JPH11117743A (en) * | 1997-10-16 | 1999-04-27 | Giichi Kuze | Wax type thermostat of high cooling efficiency for automobile engine |
| CN201568127U (en) * | 2009-10-23 | 2010-09-01 | 浙江吉利汽车研究院有限公司 | Automobile engine thermoregulator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019071540A1 (en) * | 2017-10-12 | 2019-04-18 | 舍弗勒技术股份两合公司 | Vehicle grille driving device, vehicle grille assembly and vehicle |
| CN108679211A (en) * | 2018-06-04 | 2018-10-19 | 北京长城华冠汽车技术开发有限公司 | Oil cooling system and automobile |
| CN112096504A (en) * | 2020-09-22 | 2020-12-18 | 宁波兴慈热动电器有限公司 | Thermostat |
| CN112096504B (en) * | 2020-09-22 | 2022-04-19 | 宁波兴慈热动电器有限公司 | Thermostat |
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| Publication number | Publication date |
|---|---|
| CN105041448B (en) | 2017-09-12 |
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Effective date of registration: 20191216 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. |