• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:ES2883833A2
    申请号:ES202190064
    申请日:2020-03-04
    公开日:2021-12-09
    发明作者:Faruk Unluaslan；Hikmet Kanbur
    申请人:Kirpart Otomotiv Parsalari Sanayi Ve Ticaret A S；
    IPC主号:
    专利说明:

    [0002] Thermostat assembly having a valve alignment structure
    [0004] technical field
    [0006] The invention relates to a thermostat assembly that includes a valve alignment structure that avoids any problem of misalignment of the valve on its axis.
    [0008] Specifically, the present invention relates to an adapter having leg structures that provide centering of the valve structure and thus centering of the piston during extreme cases that cause the piston end to dislodge from the piston seat. .
    [0010] prior art
    [0012] The thermostat assembly within the cooling system of an engine provides proper cooling of the engine and its parts by determining the flow ratio between the bypass circuit and the heat exchange circuit according to the actual temperature value of the engine coolant. . The change in the flow ratio between the bypass circuit and the heat exchange circuit is possible with the change in the opening ratio between the outlet area of the bypass and the outlet area of the radiator or the inlet area of the radiator. the bypass and the inlet area of the radiator. The change in the opening ratio is provided by the movement of the valve structure, guided by means of an actuator through the internal space of the thermostat.
    [0014] The back and forth movement of the valve structure is provided by the back and forth movement of the piston structure of the actuator. The piston end is always held within the piston seat formed in the center of the upper inner surface of the upper frame. At normal pressure variations, the piston end does not disengage from the piston seat.
    [0016] When the inlet coolant temperature value is below the first threshold value, the inlet coolant from the engine outlet continues to flow from the inlet to the outlet of the bypass along the bypass circuits comprising the engine channels, water pump and thermostat assembly. At these temperature values below the first threshold value, the actuator is still in the fully closed position, consequently the valve structure is also fully closed. In this fully closed position of the actuator, the valve structure allows coolant to flow from the inlet to the outlet of the bypass and prevents coolant from flowing from the inlet to the outlet of the radiator, closing only the passage area of the outlet. of the radiator.
    [0018] When the piston starts to move forward as a result of the coolant temperature rise (exceeding the first threshold value), another part of the actuator (actuator body) starts to move backwards due to the piston seat restricting forward movement from the piston end. The rearward movement of the actuator body also causes the valve body to move rearward by the force applied to the sleeve seat of the valve body by the sleeve portion of the actuator. During the backward movement of the valve structure, the spring element is compressed. So the spring stores potential energy. In this partially open position of the actuator, the valve structure allows coolant to flow from the inlet to both the bypass outlet and the radiator outlet. When the value of the inlet refrigerant temperature is equal to or greater than a second threshold value, the opening of the actuator reaches its maximum point (full backward movement), consequently, the valve structure also opens. In this fully open position of the actuator, the valve structure allows coolant to flow from the inlet to the outlet of the radiator and prevents coolant from flowing from the inlet to the outlet of the bypass, closing only the passage area of the outlet. of the derivation. At these temperature values above the second threshold, the inlet coolant from the engine outlet continues to flow from the inlet to the radiator outlet along the heat exchange circuit comprising the engine channels, the radiator, water pump and thermostat assembly.
    [0020] When the temperature value of the coolant coming from the engine outlet decreases below the second threshold, the piston starts to move backwards. The rearward movement of the piston causes the actuator body to move forward toward its fully closed position. The potential energy stored by the spring element is also used to move the valve structure towards its fully closed position. During this forward movement of the valve structure, the piston end within the piston seat provides guidance for the valve structure by centering it. Thanks to this guiding of the piston end, in the fully closed position of the valve structure, the valve structure prevents coolant leakage between the radiator and the internal space of the thermostat by perfectly locating itself on the valve seat formed on the internal surface. bottom of the upper frame.
    [0022] However, at the sudden and abnormal pressure variations that occur in extreme cases, the piston end that provides the guidance of the valve structure can disengage from the piston seat. So that, it can no longer guide the valve structure during the forward movement of the valve structure towards its fully closed position.
    [0024] Document US20140069530 A1 mentions a non-return valve comprising support legs. However, here there is neither a piston structure to provide guidance of the valve structure at normal pressure variations, nor a solution to provide guidance of the valve structure when the piston cannot guide it.
    [0025] As a result, there is no invention related to a thermostat assembly that includes leg structures that prevent any problem of misalignment of the valve on its axis when the piston end disengages from the piston seat due to an abnormal and sudden pressure change. . Therefore, the solution of the present invention is required.
    [0027] Objectives and brief description of the invention
    [0029] The objective of the present invention is to present a thermostat assembly that includes leg structures that avoid any problem of misalignment of the valve in its axis by allowing the relocation of the piston end inside the piston seat when the piston cannot fulfill the function guidance of the valve structure due to disengagement of the piston end from the piston seat in the abnormal and sudden pressure change.
    [0031] The other object of the present invention is to present a thermostat assembly that prevents coolant leakage between the radiator and the interior space of the thermostat in the fully closed position of the thermostat, allowing the piston end to relocate inside the piston seat, allowing consequently, that the valve structure locates perfectly on the valve seat formed on the lower inner surface of the upper frame through said leg structures when the piston end disengages from the piston seat due to a change of abnormal and sudden pressure.
    [0033] This thermostat assembly, comprising
    [0035] -an upper frame including a piston seat and a valve seat,
    [0036] - an actuator including a piston with a piston end,
    [0037] - a valve structure comprising an upper valve element,
    [0038] -an adapter having at least three centering leg structures that locate between the upper frame and lower frame in the closed position of the thermostat assembly, and allow the piston end to relocate within the piston seat by centering the structure valve
    [0040] allows the above mentioned valve upper member to fully engage the above mentioned valve seat by preventing the valve assembly from coming off its axis when the piston end disengages from the piston seat due to an abnormal and sudden pressure change.
    [0042] The upper frame of the present thermostat assembly has an adapter seat formed around the valve seat to position said adapter on the upper frame.
    [0044] In preferred embodiments of the present invention, said adapter has three centering leg structures.
    [0045] In preferred embodiments of the present invention, the centering leg structures have sloped inner surfaces where the inner circle formed by the centering leg structures tapers toward the valve seat.
    [0047] Description of the figures
    [0049] In Figure 1a, a perspective view of the present adapter is shown having leg structures.
    [0051] In Figure 1b, a perspective view is illustrated showing the fully closed position of the valve structure.
    [0053] In Figure 2, a perspective view is illustrated showing the fully open position of the valve structure.
    [0055] In Figure 3, a cross-sectional view of the present thermostat assembly is shown in the fully closed position.
    [0057] Illustrated in Figure 4 is a perspective view of the internal components located within the present thermostat assembly in the fully closed position.
    [0059] Illustrated in Figure 5 is a front view of the internal components located within the present thermostat assembly in the fully closed position.
    [0060] Illustrated in Figure 6 is a side view of the internal components located within the present thermostat assembly in the fully open position.
    [0062] In Figure 7, a front view of the present thermostat assembly is shown.
    [0064] In Figure 8, an exploded perspective view of the present thermostat assembly is illustrated.
    [0066] Illustrated in Figure 9a is a perspective view of a conventional valve and actuator combination that prevents the piston end from disengaging from the piston seat. This solution is applicable only for the valve and frame which are made of metal.
    [0068] In Figure 9b, a cross-sectional view of the aforementioned conventional solution is illustrated which prevents disengagement of the piston end from the piston seat.
    [0070] reference numbers
    [0072] 10. Thermostat assembly
    [0073] 10.1. Inside space of thermostat
    [0074] 11. Upper frame
    [0075] 11.1. piston seat
    [0076] 11.2. valve seat
    [0077] 11.3. adapter seat
    [0078] 12. Lower frame
    [0079] 13. First sealing element
    [0080] 14. First spring element
    [0081] 15. Valve structure
    [0082] 15.1. valve upper element
    [0083] 15.2. First sealing groove
    [0084] 15.3. Lower valve element
    [0085] 15.4. Second sealing groove
    [0086] 16. Second sealing element
    [0087] 17. Guide element
    [0088] 18. Second spring element
    [0089] 20. Adapter
    [0090] 20.1. Centering leg
    [0091] 30. Actuator
    [0092] 30.1. Sleeve
    [0093] 30.2. Piston
    [0094] 30.3. piston end
    [0096] Detailed description of the invention
    [0098] This invention relates to a thermostat assembly (10) that eliminates the problem of misalignment of the valve structure (15), which could occur during sudden and very large pressure variations within the interior space (10.1) of the thermostat, centering the valve structure (15) through an adapter (20) having centering feet (20.1).
    [0100] At normal pressure variations, the piston end (30.3) located inside the piston seat (11.1) provides centering of the valve body (15) during the back and forth movement of the valve body (15). . When the coolant temperature drops below the first threshold value, the valve body (15) moves to its fully closed position and engages over the valve seat (11.2) to prevent coolant leakage between the radiator and the interior space. (10.1) of the thermostat. In this case, the orientation for centering is provided by the piston end (30.3) located inside the piston seat (11.1). The piston end (30.3) is always on the piston seat (11.1), however, in extreme cases where the pressure changes abruptly and abnormally, it can disengage from the piston seat (11.1). The disengagement of the piston end (30.3) from the piston seat (11.1) prevents the valve body (15) from fully re-engaging over the valve seat (11.2) on the lower inside of the upper frame (11). . Since the valve structure (15) does not completely refit onto the valve seat (11.2), it is not possible to maintain their sealing. As shown in Figures 9a and 9b, this piston end disengagement problem has already been solved for frame and valve structures that are made of a metallic material. The piston end having a notched part is fixed within the piston seat by means of extensions extending from the piston seat towards the notched parts. Therefore, it is not possible for the piston end to disengage from the piston seat by abnormal pressure variation. However, this solution applied for metal constructions cannot be applied to thermostat assemblies having a rubber frame due to the nature of rubber.
    [0101] The present invention provides a solution to the decoupling problem of the piston end (30.3), which could be applied to any type of thermostat assembly (10), without material restriction.
    [0103] As shown in Figure 8, the present thermostat assembly (10) comprises
    [0105] - an upper frame (11) that includes a valve seat (11.2) located on its lower surface, a piston seat (11.1) formed inside, which coincides with the center of said valve seat (11.2) and a seat of adapter (11.3) formed around said valve seat (11.2),
    [0106] - an adapter (20) comprising at least three centering lugs (20.1) and located in the seat of said adapter (11.3),
    [0107] - an actuator (30) including a sleeve (30.1), a piston (30.2),
    [0108] - a valve structure (15) including an upper valve element (15.1) with a first sealing groove (15.2) and a lower valve element (15.3) with a second sealing groove (15.4),
    [0109] - a first sealing element (13) which is located inside the said first sealing groove (15.2) in the upper valve element (15.1),
    [0110] - a first spring element (14) which is located between the mentioned upper valve element (15.1) and the lower valve element (15.3),
    [0111] - a second sealing element (16) which is located inside the mentioned second sealing groove (15.4) in the lower valve element (15.3),
    [0112] - a lower frame (12)
    [0113] - a guide element (17) which is located between the lower valve element (15.3) and the lower frame (12).
    [0114] The present thermostat assembly (10) provides re-centering of the valve body (15) by means of the aforementioned centering leg structures (20.1) extending from the adapter (20) towards the valve body (15). ) when the piston end (30.3) of the actuator (30) disengages from the piston seat (11.1) due to sudden and abnormal pressure variations. In figure 1a a perspective view of the adapter (20) is illustrated. The adapter (20) is located in the adapter seat (11.3) formed around the valve seat (11.2). As shown in figure 1b, in the fully closed position of the thermostat (10), the upper valve element (15.1) is located on the valve seat (11.2). Thus, it prevents coolant leakage between the radiator and the inner space (10.1) of the thermostat in the fully closed position of the thermostat. As shown in figure 2, the upper valve element (15.1) is kept away from the valve seat (11.2) as a result of the backward movement of the actuator (30) that occurs at temperature values below the first threshold value . Thus, the coolant inside the radiator is allowed to flow through the heat exchange circuit.
    [0116] When sudden and very large pressure variations occur that cause the piston end (30.3) to disengage from the piston seat (11.1), the mentioned adapter (20) allows the piston end (30.3) to relocate inside the seat. piston (11.1) preventing the valve structure (15) from coming off its axis. In this embodiment of the present thermostat assembly (10), the adapter (20) has three centering leg structures (20.1) that provide centering of the valve structure (15). However, in the other embodiments of the present invention, it is possible to use an adapter (20) having four or more centering leg structures (20.1).
    [0117] In addition, in the preferred embodiment of the invention, the centering leg structures (20.1) have internal sloped surfaces where the inner circle formed by the centering leg structures (20.1) tapers towards the valve seat (11.2). ). Therefore, the inclined internal surfaces facilitate the centering of the valve structure (15). However, in the other embodiments of the present invention, it is also possible that the centering leg structures (20.1) do not have internal sloped surfaces.
    [0119] Illustrated in Figure 3 is a cross-sectional view of the present thermostat assembly 10 in the fully closed position. Different perspective views of the internal components within the present thermostat assembly (10) are shown in Figures 4, 5 and 6. While figures 4 and 5 pertain to the fully closed position of the thermostat, figure 6 pertains to the fully open position of the thermostat.
    [0120] In Figure 7 a front view of the present thermostat assembly (10) is shown. Illustrated in Figure 8 is an exploded perspective view of the present thermostat assembly (10).
    [0122] Illustrated in Figure 9a is a perspective view of the conventional solution that prevents disengagement of the piston end from the piston seat only for thermostat assemblies having a metal frame and metal valve structure, fixing the piston end inside of the piston seat. A cross-sectional view of the conventional solution is illustrated in Figure 9b.
    权利要求:
    Claims (4)
    [1]
    1. A thermostat assembly (10), comprising
    - an upper frame (11) including a piston seat (11.1) and a valve seat (11.2),
    - an actuator (30) including a piston (30.2) with a piston end (30.3),
    - a valve structure (15) including an upper valve element (15.1),
    characterized in that the thermostat assembly (10) also comprises an adapter (20) having at least three centering leg structures (20.1) which is located between said upper frame (11) and lower frame (12) in the mounted state.
    [2]
    2. A thermostat assembly (10) according to claim 1, wherein the upper frame (11) has an adapter seat (11.3) formed around the valve seat (11.2) to place said adapter (20) on the upper frame (11).
    [3]
    3. A thermostat assembly (10) according to claim 1, wherein said adapter (20) has three centering leg structures (20.1).
    [4]
    4. A thermostat assembly (10) according to the preceding claims, wherein the centering leg structures (20.1) have internal sloped surfaces where the inner circle formed by the centering leg structures (20.1) tapers towards the valve seat (11.2).
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    同族专利:
    公开号 | 公开日
    GB2596725A|2022-01-05|
    TR201906376A2|2020-11-23|
    WO2020222710A1|2020-11-05|
    GB202114449D0|2021-11-24|
    ES2883833R1|2022-01-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    ES348605A1|1967-11-16|1969-03-16|Behr-Thomson Dehnstoffregler|Improvements in the construction of thermostatic valves. |
    DE1775816C3|1968-09-27|1974-05-09|Behr-Thomson Dehnstoffregler Gmbh, 7014 Kornwestheim|Thermostatic valve with a device to simplify valve assembly|
    DE1917925A1|1969-04-09|1970-11-19|Behr Thomson Dehnstoffregler|Thermostatic valve|
    DE3740500C1|1987-11-30|1989-04-06|Behr Thomson Dehnstoffregler|Thermostatically actuable valve|
    DE9204611U1|1992-04-03|1993-08-05|Behr-Thomson Dehnstoffregler Gmbh & Co, 70806 Kornwestheim, De|
    DE4416554A1|1994-05-11|1995-11-16|Behr Thomson Dehnstoffregler|Thermostatic valve for cooling system of IC engine|
    CN204312184U|2014-12-03|2015-05-06|哈尔滨东安汽车动力股份有限公司|A kind of water inlet assembly of thermostat of new structure|
    US9581074B2|2014-12-22|2017-02-28|Fca Us Llc|Engine thermostat with integrated coolant filter|
    CN205605289U|2016-03-23|2016-09-28|内蒙古欧意德发动机有限公司|Thermostat assembly and engine cooling system|
    法律状态:
    2021-12-09| BA2A| Patent application published|Ref document number: 2883833 Country of ref document: ES Kind code of ref document: A2 Effective date: 20211209 |
    2022-01-10| EC2A| Search report published|Ref document number: 2883833 Country of ref document: ES Kind code of ref document: R1 Effective date: 20211230 |
    优先权:
    申请号 | 申请日 | 专利标题
    TR2019/06376A|TR201906376A2|2019-04-29|2019-04-29|THERMOSTAT ASSEMBLY WITH VALVE ALIGNMENT STRUCTURE|
    PCT/TR2020/050171|WO2020222710A1|2019-04-29|2020-03-04|Thermostat assembly having valve alignment structure|
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