WO2021002819A1 - Valve structure allowing controlled coolant flow - Google Patents
Valve structure allowing controlled coolant flow Download PDFInfo
- Publication number
- WO2021002819A1 WO2021002819A1 PCT/TR2020/050438 TR2020050438W WO2021002819A1 WO 2021002819 A1 WO2021002819 A1 WO 2021002819A1 TR 2020050438 W TR2020050438 W TR 2020050438W WO 2021002819 A1 WO2021002819 A1 WO 2021002819A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thermostat assembly
- given
- valve structure
- thermostat
- upper valve
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
- G05D23/1306—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids
- G05D23/132—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element
- G05D23/1333—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of incoming fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
- G05D23/021—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste
- G05D23/022—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste the sensing element being placed within a regulating fluid flow
Definitions
- the invention relates a thermostat assembly providing controlled progressivity in the opening of radiator window.
- the present invention relates to a valve structure having undulated valve element allowing controlled coolant flow between radiator and thermostat interior space.
- Thermostat assembly within engine cooling system provides proper cooling of the engine and its parts by determining the flow ratio between bypass circuitry and heat exchange circuity according to the actual temperature value of engine coolant.
- the change in the flow ratio between bypass circuitry and heat exchange circuity is possible with the change in the opening ratio between bypass inlet window and radiator inlet window or bypass outlet window and radiator outlet window.
- the change in the opening ratio is provided by the forward and backward motion of the valve structure guided by means of an actuator throughout thermostat interior space.
- valve structure allows coolant flow from bypass inlet to outlet and prevents coolant flow from radiator inlet to outlet by closing upper valve seat via upper valve element.
- valve structure When the piston starts to move forward as a result of the increase in the coolant temperature (exceeding the first threshold value), other portion of the actuator (actuator body) starts to move backward due to the piston seat that restricts the forward motion of the piston end.
- the backward motion of the actuator body causes the backward motion of the valve structure too thanks to the force applied on sleeve seat of valve structure by sleeve portion of the actuator.
- spring element is compressed. So, the spring stores potential energy.
- valve structure allows coolant coming from both bypass inlet and radiator inlet to flow toward outlet.
- valve structure allows coolant coming from radiator inlet to flow toward outlet and prevents coolant flow from bypass inlet to outlet by closing the lower valve seat via lower valve element.
- the coolant coming from engine outlet continues to flow from radiator inlet to outlet throughout heat exchange circuitry comprising engine channels, radiator channels, water pump and thermostat assembly.
- the stroke value of the actuator for determining the amount of the coolant that flows from the radiator channel to thermostat interior space.
- the amount of the coolant flowing from radiator inlet to outlet throughout thermostat interior space depends on just the size of opening (gap) between upper valve seat and upper valve element.
- the opening is determined by just the stroke value provided by the actuator.
- the amount of opening is generally more than the required opening, the cooling is more than the required cooling. So, it is not possible to reach desired cooling target at once.
- the valve structure has to change position forwards and backwards until reaching the desired cooling target.
- EP2246599A1 mentions a control valve for a fluid flow circuit. There is a lateral opening permitting to control the progression of fluid flow. However, here it is not mentioned about a valve structure having undulated wall structure on the top surface of its upper valve element.
- thermostat assembly allowing to reach the desired cooling target at once by providing controlled coolant flow from radiator inlet to outlet.
- the aim of the present invention is to present a thermostat assembly allowing to reach the desired cooling target at once by providing controlled coolant flow from radiator inlet to outlet.
- the another aim of the present invention is to present a valve structure allowing controlled coolant flow from radiator inlet to outlet by restricting the opening between upper valve seat and upper valve element via its undulated wall structure.
- Present thermostat assembly comprises - an upper frame including an upper valve seat
- valve structure including an upper valve element
- Mentioned undulated wall structure has at least one crest and related one trough.
- mentioned undulated wall structure could have more than one crests and related troughs.
- mentioned upper valve seat has an undulated form.
- figure 1 a perspective view of the present valve structure is given.
- figure 2a a top view of the mentioned valve structure is shown.
- FIG 2c a perspective view of another embodiment of the present valve structure is given.
- FIG 7a a perspective view of conventional valve structure is given.
- figure 7b a cross-sectional view of the conventional valve structure is given.
- This invention relates to a thermostat assembly (10) which provides controlled coolant flow between radiator inlet and thermostat interior space (10.1) via valve structure (15) having undulated valve element restricting amount of coolant flow therefor.
- valve structure (15) having undulated valve element restricting amount of coolant flow therefor.
- the amount of the coolant flowing from the opening between the valve seat and valve element cannot be controlled by the other variant except the stroke value of the actuator. Since the amount of opening versus the unit stroke value is greater than the required amount, this causes a sudden decrease in the temperature value of the engine coolant. Then, the valve moves forward for decreasing amount of the coolant coming from radiator inlet and consequently for increasing the amount of the coolant coming from the bypass inlet.
- the present invention allows the desired cooling target to be reached at once without unnecessary forward and backward motions of the valve structure (15). This is possible thanks to the valve structure (15) having an upper valve element (15.1) with undulated wall structure (15.2).
- the present thermostat assembly (10) comprises an upper frame (1 1) which includes an upper valve seat (11.2) located on its lower surface and a piston seat (11.1) formed inside as coinciding to the center of the mentioned upper valve seat (11.2),
- an actuator (30) including a sleeve (30.1) and a piston (30.2), a valve structure (15) which includes an upper valve element (15.1) with an undulated wall structure (15.2) and a lower valve element (15.3) with a sealing groove (15.4),
- a first spring element (14) which is located between mentioned upper valve element (15.1) and lower valve element (15.3),
- Present thermostat assembly (10) provides controlled coolant flow between radiator inlet and outlet, versus unit stroke value of the actuator (30) thanks to the undulated wall structure (15.2) formed on the top surface of the upper valve element (15.1).
- the undulated wall structure (15.2) could have one or more crests (C) and troughs (T) according to the cooling control requirement of the cooling system.
- the upper frame (1 1) has an undulated wall form instead of the undulated wall structure (15.2) of the upper valve element
- the undulated wall form could have one or more crests and troughs according to the cooling control requirement of the cooling system. And also, the geometries and dimensions of each crest (C) and related trough (T) can vary according to the requirements.
- each trough (T) is different to each other. So, the opening amount corresponding to the unit stroke value could be chanced according to the cooling requirement by designing the troughs (T) in different levels and dimensions.
- the coolant within the radiator channel flows firstly throughout the trough (T) that is located at the lowest level. Then, with the backward advance of the valve structure (15), the coolant continues to flow respectively throughout the other troughs (T) according to their levels.
- the present valve structure (15) provides controlled flow of the coolant within the radiator channel towards thermostat interior space (10.1).
- thermostat assembly (10) having two inlets- one outlet can be also applicable for the thermostat assembly (10) having one inlet-two outlets.
- Present valve structure’s (15) a top view showing mentioned undulated wall structure (15.2) is given in Figure 2a. A cross-sectional view of the present valve structure (15) is given in Figure 2b. From this figure, it is possible to see that the levels of two consecutive (or each) troughs (T) are different to each other while level of each crest (C) is equal to each other. This provides the controlled coolant flow at changing ratios according to the design of the valve structure (15) versus each advance in the stroke value of the actuator (30).
- FIG. 1 Perspective and cross-sectional views of another preferred embodiment of the present valve structure (15) are given respectively in Figure 2c and 2d.
- level of each crest (C) is different to each other while level of each trough (T) is equal to each other.
- FIG. 3 A cross-sectional view of the present thermostat assembly (10) in the fully closed position is given in Figure 3. As seen from this figure, since the upper valve seat (11.2) is closed by the upper valve element (15.1), at this fully closed thermostat position the coolant within the radiator channel cannot flow towards the thermostat interior space (10.1). Here, coolant flows throughout just the bypass circuitry.
- FIG. 4 A cross-sectional view of the present thermostat assembly (10) in the partially open position is given in Figure 4.
- the upper valve element (15.1) also moves backward.
- the crest (C) portion of the upper valve element (15.1) continues to be in contact with the upper valve seat (1 1.2).
- the coolant within the radiator channel flows through between the upper valve seat (1 1.2) and the troughs (T) that do not be in contact with the upper valve seat (11.2).
- FIG. 5 A cross-sectional view of the present thermostat assembly (10) in the fully open position is given in Figure 5. As seen from this figure, since the lower valve seat (12.1 ) is closed by the lower valve element (15.3), at this fully open thermostat position the coolant within the bypass channel cannot flow towards the thermostat interior space (10.1). Here, coolant flows throughout just the heat exchange circuitry.
- a cross-sectional view of the conventional thermostat assembly in the fully closed position is given in Figure 8.
- a cross-sectional view of the conventional thermostat assembly in the partially open position is given in Figure 9.
- the opening between the upper valve seat and the upper valve element is equal everywhere. So, it is not possible to control amount of the coolant flow corresponding to unit stroke value of the actuator (30).
- a cross-sectional view of the conventional thermostat assembly in fully open position is given in Figure 10.
- thermo element has 1 mm stroke value
- thermo element has 2 mm stroke value
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ROA202100756A RO135845A2 (en) | 2019-07-03 | 2020-05-21 | Valve structure allowing controlled flow of the coolant |
GB2115544.5A GB2597024B (en) | 2019-07-03 | 2020-05-21 | Valve structure allowing controlled coolant flow |
ES202190066A ES2895203B2 (en) | 2019-07-03 | 2020-05-21 | Thermostat assembly allowing controlled coolant flow |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR2019/09912A TR201909912A1 (en) | 2019-07-03 | 2019-07-03 | VALVE STRUCTURE THAT ALLOWS CONTROLLED REFRIGERANT FLOW |
TR2019/09912 | 2019-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021002819A1 true WO2021002819A1 (en) | 2021-01-07 |
Family
ID=74101194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/TR2020/050438 WO2021002819A1 (en) | 2019-07-03 | 2020-05-21 | Valve structure allowing controlled coolant flow |
Country Status (5)
Country | Link |
---|---|
ES (1) | ES2895203B2 (en) |
GB (1) | GB2597024B (en) |
RO (1) | RO135845A2 (en) |
TR (1) | TR201909912A1 (en) |
WO (1) | WO2021002819A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997011262A1 (en) * | 1995-09-19 | 1997-03-27 | Standard-Thomson Corporation | Thermostat having a movable weir valve |
DE202010017643U1 (en) * | 2010-08-17 | 2012-04-18 | Gustav Wahler Gmbh U. Co. Kg | thermostatic valve |
US20130263801A1 (en) * | 2012-04-06 | 2013-10-10 | Hyundai Motor Company | Thermostat |
TR201813363A1 (en) * | 2018-09-18 | 2020-09-07 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1989622U (en) * | 1966-03-08 | 1968-07-18 | Gustav Wahler Metallwarenfabri | VALVE DISC FOR THERMOSTATIC COOLING WATER CONTROL VALVES. |
FR2833676A1 (en) * | 2001-12-17 | 2003-06-20 | Mark Iv Systemes Moteurs Sa | Regulator with valve, e.g. for cooling circuit thermostat, has projecting structure round aperture in hollow housing and/or valve body |
-
2019
- 2019-07-03 TR TR2019/09912A patent/TR201909912A1/en unknown
-
2020
- 2020-05-21 WO PCT/TR2020/050438 patent/WO2021002819A1/en active Application Filing
- 2020-05-21 GB GB2115544.5A patent/GB2597024B/en active Active
- 2020-05-21 RO ROA202100756A patent/RO135845A2/en unknown
- 2020-05-21 ES ES202190066A patent/ES2895203B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997011262A1 (en) * | 1995-09-19 | 1997-03-27 | Standard-Thomson Corporation | Thermostat having a movable weir valve |
DE202010017643U1 (en) * | 2010-08-17 | 2012-04-18 | Gustav Wahler Gmbh U. Co. Kg | thermostatic valve |
US20130263801A1 (en) * | 2012-04-06 | 2013-10-10 | Hyundai Motor Company | Thermostat |
TR201813363A1 (en) * | 2018-09-18 | 2020-09-07 |
Also Published As
Publication number | Publication date |
---|---|
ES2895203R1 (en) | 2022-02-22 |
ES2895203B2 (en) | 2022-11-02 |
GB2597024A (en) | 2022-01-12 |
TR201909912A1 (en) | 2021-01-21 |
ES2895203A2 (en) | 2022-02-17 |
RO135845A2 (en) | 2022-06-30 |
GB202115544D0 (en) | 2021-12-15 |
GB2597024B (en) | 2023-07-26 |
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