TR201909912A1 - VALVE STRUCTURE THAT ALLOWS CONTROLLED REFRIGERANT FLOW - Google Patents

Abstract

The invention relates to the thermostat device (10) that provides a controlled gradual increase in the opening of the radiator window. More specifically, the present invention relates to a valve structure (15) comprising a valve member that allows controlled flow of coolant between the radiator and the thermostat cavity (10.1).

Description

DESCRIPTION VALVE STRUCTURE TO ALLOW CONTROLLED REFRIGERANT FLOW Technical Area The invention relates to a thermostat assembly providing a controlled gradual increase in the opening of the radiator window.

More specifically, the controlled refrigerant between the existing invention radiator and thermostat inner space. It relates to a valve structure that includes a valve member that allows flow.

State of the Art The thermostat assembly in the engine cooling system adjusts to the current temperature of the engine coolant. by determining the flow rate between the bypass circuit and the heat exchange circuit according to the It ensures proper cooling of the parts. between the bypass circuit and the heat exchange circuit. The change in flow rate, between the bypass inlet window and the radiator inlet window, or between the bypass possible by changing the opening ratio between the exit window and the radiator exit window is happening. The change in opening rate is via an actuator across the thermostat cavity. provided by the reciprocating movement of the guided valve structure.

When the temperature value of the cooler coming from the motor output is below the first threshold value, the cooler bypass bypass circuit including motor channels from inlet to outlet, coolant pump and thermostat assembly continues to flow throughout. At these temperature values below the first threshold value, the actuator and therefore the valve structure remains in the completely closed position. This is the actuator In the fully closed position, the valve structure allows refrigerant flow from the bypass inlet to the outlet. and the radiator moves from the inlet to the outlet by closing the upper valve seat via the upper valve element. It prevents the refrigerant flow.

As a result of the increase in the coolant temperature (exceeding the first threshold value), the piston begins to move forward. the other part of the actuator (actuator stem) restricts the forward movement of the piston tip. it starts to move backwards because of its seat. Backward movement of the actuator stem valve by the force exerted by the collar portion of the actuator on the collar seat of the valve structure. It also causes the structure to move backwards. Spring during the backward movement of the valve structure element is compressed. Thus, the spring stores potential energy. Actuator that is partially open position, the valve structure allows the refrigerant to come from both the bypass inlet and the radiator inlet. Allows direct flow to the outlet.

The temperature value of the cooler coming from the motor output is equal to or above the second threshold value. opening of the valve structure to its maximum point (fully backward movement). In this fully open position of the actuator, the valve structure is drawn from the radiator inlet. It allows the incoming refrigerant to flow towards the outlet and seals the lower valve seat through the lower valve member. By closing it, it prevents the refrigerant flow from the bypass inlet to the outlet. Your second threshold value At these temperature values above, the cooling radiator coming from the engine outlet is moving from the inlet to the outlet. heat exchange including engine ducts, radiator ducts, coolant pump and thermostat assembly continues to flow throughout the circuit.

In conventional thermostat assemblies, from fully closed to partially open position or Except for the stroke value of the actuator when changing from the partially open position to the fully open position Any device that determines the amount of refrigerant flowing from the radiator duct to the thermostat inner cavity. there is no variable. This means that the radiator is the thermostat inner space from the inlet to the outlet. The amount of refrigerant flowing through the top valve seat is simply the gap between the top valve seat and the top valve member. (space) size. This clearance is determined by the stroke value provided by the actuator. is determined. However, since the amount of clearance is often greater than the clearance needed the cooling is more than the required cooling. As a result, the desired cooling It is not possible to reach the target at once. Valve structure to desired cooling target it has to change position back and forth until it is reached.

Document with reference EP2246599 A1 mentions a control valve for the liquid flow circuit. Here There is a lateral opening that allows to control the gradual increase of the liquid flow. However, wherein the upper valve consists of a valve structure with a wavy wall structure on the upper surface of the element. is not mentioned.

As a result, the desired cooling is achieved by providing a controlled flow of coolant from the radiator inlet to the outlet. A thermostat device is needed that allows the target to be reached at once.

Purpose and Brief Description of the Invention The aim of the invention is to provide the desired cooling by providing controlled refrigerant flow from the radiator inlet to the outlet. It is to introduce a thermostat system that allows the target to be reached at once.

Another object of the present invention is the upper valve seat and the upper valve member through the corrugated wall structure. It provides a controlled flow of coolant from the radiator inlet to the outlet by limiting the gap between valve structure.

Existing thermostat assembly - an upper body with an upper valve seat, - a valve structure comprising an upper valve member, - a wavy wall structure formed on the upper surface of said upper valve member contains.

The aforementioned wavy wall structure has at least one hill and one pit connected to it.

In the preferred embodiment of the invention, the wavy wall structure mentioned has more than one hill and these may have attached pits.

The lowest point of each pit is different from each other according to the need of the cooling system. can be designed.

The highest point of each hill is different from each other according to the need of the cooling system. can be designed.

The dimensions of each hill and trough can be adjusted independently of each other according to the needs of the cooling system. can be designed.

In another preferred embodiment of the present invention, said upper valve seat has a wavy form. has.

Description of Figures In Figure 1, a perspective view of the existing valve structure is given.

A top view of the valve structure mentioned is given in Figure 2a.

In Figure 2b, a cross-sectional view of the valve structure in question is given.

In Figure 20, a perspective view of another embodiment of the existing valve structure is given.

In Figure 2d, a cross-sectional view of the said embodiment of the existing valve structure is given.

Figure 3 is a cross-sectional view of the existing thermostat assembly in the fully closed position. are given.

Figure 4 is a cross-sectional view of said thermostat assembly in the partially open position. are given.

Figure 5 is a cross-sectional view of said thermostat assembly in the fully open position. are given.

Figure 6 shows an exploded perspective view of the existing thermostat assembly.

A perspective view of the conventional valve structure is given in Figure ?a.

Figure 7b shows a cross-sectional view of the conventional valve structure.

Figure 8 is a cross-sectional view of the conventional thermostat assembly in the fully closed position. are given.

Figure 9 is a cross-section of said conventional thermostat assembly in the partially open position. view is given.

Figure 10 is a cross-section of said conventional thermostat assembly in the fully open position. view is given.

Figure 11 below is a close-up of the present invention's thermostat assembly in the fully closed position. A side-section view is given.

Figure 11b is a close cross-section of a conventional thermostat assembly in the fully closed position. view is given.

In Figure 12a, the said case in the partially open position where the actuator has a stroke value of 1 mm A close-up cross-section view of the thermostat assembly of the present invention is given.

In Figure 12b, the said case in the partially open position where the actuator has a stroke value of 1 mm. A close-up cross-section view of the conventional thermostat assembly is given.

In Figure 13a, the subject in the partially open position where the actuator has a stroke value of 2 mm A close-up cross-section view of the thermostat assembly of the present invention is given.

In Figure 13b, the actuator in the partially open position has a stroke value of 2 mm. A close-up cross-section view of the conventional thermostat assembly is given.

The present invention in figure 14a in the partially open position where the actuator has a stroke value of 3 mm A close-up cross-section view of the thermostat assembly in question is given.

Figure 14b shows the conventional position in the partially open position where the actuator has a stroke of 3 mm. A close-up cross-section view of the thermostat assembly is given.

The present invention in figure 15a where the actuator has a stroke value of 4 mm in the fully open position A close-up cross-section view of the thermostat assembly in question is given.

Figure 15b shows the conventional in fully open position where the actuator has a stroke of 4 mm. A close-up cross-section view of the thermostat assembly is given.

In Figure 1651, the gradual increase graph of the thermostat assembly, which is the subject of the present invention, is given.

Figure 16b shows the incremental graph of the conventional thermostat assembly.

Reference Numbers . thermostat assembly .one. Thermostat inner cavity 11. Upper body 11.1. piston seat 11.2. upper valve seat 12. Lower body 12.1. lower valve seat 14. First spring element . valve structure .one. upper valve element .2. wavy wall structure .3. lower valve element .4. sealing groove .5. bracelet seat 16. Sealing element 17. Guide element 18. Second spring element . actuator .one. Bracelet .2. Piston A. Gradual line of rise of existing thermostat assembly B. Gradual line of rise of the conventional thermostat assembly Detailed Description of the Invention The invention is to limit the amount of refrigerant flow between the radiator inlet and the thermostat cavity (10.1). Thanks to the valve structure (15) with the wavy valve element, the radiator inlet and the inner space of the thermostat (10.1) It relates to a thermostat assembly (10) that provides controlled refrigerant flow between

From the fully closed valve position to the partially open position in conventional thermostat assemblies valve seat and valve element when changing from partially open to fully open The amount of refrigerant flowing through the opening between any variable other than the stroke value of the actuator cannot be controlled with The amount of opening corresponding to the unit stroke value is needed. Since it is more than the amount, this will cause a sudden drop in the temperature value of the engine coolant. is happening. Therefore, the valve is designed to reduce the amount of refrigerant coming from the radiator inlet, thus it moves forward to increase the amount of refrigerant coming from the bypass inlet. However, this At the same time, despite the unit stroke value, the closing amount is more than needed, this situation causes a sudden increase in the temperature value of the engine coolant. After that, the valve, the radiator To increase the amount of refrigerant coming from the inlet, therefore, to increase the amount of refrigerant coming from the bypass inlet. It moves backwards to reduce the amount. However, this time the unit stroke value However, the amount of opening is more than needed again, this situation causes a sudden drop in the temperature value. valve until the desired cooling target is reached. These back and forth movements of the structure continue. Opening despite the unit stroke value of the actuator or to reach the desired cooling target because the shutdown amounts are more than needed it takes time. Here, it is not possible to reach the goal all at once. conventional valve Below is the table showing the opening and opening area values corresponding to each stroke value for the structure. are given. Here, the clearance is the vertical distance between the upper valve member and the upper valve seat.

Stroke Opening (h) Opening Area (2.1r.R. h) The present invention achieves the desired cooling target without unnecessary reciprocating movements of the valve structure 15. allows one-time access. This is an overhead valve with a wavy wall construction (15.2) This is possible thanks to the valve structure (15) having the element (15.1).

Existing thermostat assembly (10) as shown in Figure 6 an upper valve seat (11.2) positioned on its lower surface and said upper valve seat A piston seat (11.1) positioned in the interior to coincide with the center of (11.2) an upper body (11), - an actuator (30) with a ring (30.1) and a piston (30.2), - an upper valve element (15.1) with a corrugated wall construction (15.2) and a sealing groove a valve structure (15) having a lower valve member (15.3) with a (15.4) - a first positioned between said upper valve member (1 5.1) and lower valve member (15.3) spring element (14). - into said sealing groove (15.4) on the lower valve element (15.3) a positioned sealing element (16), - a lower body (12), - a guide element positioned between the lower valve element (15.3) and said lower body (12) (17), - a second spring positioned between said guide element (17) and the lower body (12) contains the components.

The existing thermostat assembly (10) is the undulating wall formed on the upper surface of the upper valve member (15.1). Thanks to its structure (15.2), despite the unit stroke value of the actuator (30), the radiator inlet and outlet It provides controlled refrigerant flow between Cooling control of the cooling system the undulating wall structure (15.2) may have one or more crests (C) and troughs according to their needs. (T) may have. In another embodiment of the invention, the wavy in the upper valve member (15.1) Instead of the wall structure (15.2), there is a wavy wall form on the upper body (11). wavy wall form, one or more peaks and troughs according to the cooling control needs of the cooling system. contains. Also, the geometries and dimensions of each crest (C) and associated trough (T) may vary according to needs. An upper valve element (15.1) with a wavy wall structure (15.2) A perspective view of the valve structure (15) having it is given in Figure 1 . seen from Figure 1 In this embodiment of the invention, the lowest level of each pit (T) is different from each other.

Thus, despite the unit stroke value, the amount of opening, the pits (T) in different alignments and sizes. It can be changed according to the cooling need by design. From the fully closed position When switching to the partially open position, the coolant in the radiator channel is first at the lowest level. It flows along the positioned pit (T). Then move the valve structure (15) backwards. With progress, the coolant continues to flow through the other pits (T), respectively, according to their level. is doing. Thus, unlike conventional valve structures, the valve structure (15) of the present invention is Controlled flow of the coolant in the radiator duct towards the thermostat inner space (10.1). it provides. Thanks to the controlled coolant flow, the engine circulating through the engine channel There is no sudden decrease or increase in the temperature of the cooler. Like this, all at once to the desired cooling target without unnecessary back and forth movements of the valve structure (15). becomes possible to reach. Each stroke value for the valve structure (15) which is the subject of the present invention. The table showing the corresponding opening and opening area values is given below. Here clearance is the vertical distance between the upper valve member (15.1) and the upper valve seat (11.2).

Stroke Opening Opening Area(2.n. R. h) 1mm 1.20mm 73mm: 2mm 1.91mm 141mm: 3mm 2.62mm 203mm: 4mm 3.33mm 257mm: Moreover, all the above features given with respect to the thermostat assembly (10) having two inputs and one output are a single It can also be applied for the thermostat assembly (10) with input-two outputs.

A top view of the existing valve structure (15) showing said undulating wall structure (15.2) It is given in Figure 2a. A cross-sectional view of the existing valve structure (15) is shown in Figure 2b. are given. In this figure, the level of each peak (C) is equal to two consecutive (or each) It is possible to see that the levels of the pit (T) are different from each other. This is the actuator (30) Despite each progress in the stroke value, according to the design of the valve structure (15), at varying rates It provides controlled refrigerant flow.

Perspective and view of another preferred embodiment of the valve structure (15) of the present invention. cross-sectional views are given in Figure 20 and 2d, respectively. Level of each pit (T) Equal to each other, the level of each peak (C) is different from each other.

A cross-sectional view of the existing thermostat assembly (10) in the fully closed position. Figure It is given in 3. As seen in this figure, the upper valve seat (11.2) and the upper valve element (15.1) the radiator in the radiator channel in this fully closed thermostat position. the refrigerant cannot flow towards the thermostat inner cavity (10.1). Here the cooler is bypass only. flows throughout the circuit.

A cross-sectional view of the existing thermostat assembly (10) in the partially open position is shown in Figure 4 are given. The upper valve member (15.1) as a result of backward movement of the valve structure (15) It also moves backwards. As can be seen from this figure, only the upper valve is here. There is a gap between the trough (T) part of the element (15.1) and the upper valve seat (11.2). top valve the top (C) part of the member (15.1) remains in contact with the upper valve seat (11.2).

Thus, in this position of the existing thermostat assembly (10), the coolant in the radiator channel is along the grooves (T) that are not in contact with the valve seat (11.2) and the upper valve seat (11.2) is flowing. By designing the level of each pit to be different from each other, the actuator It becomes possible to control the amount of refrigerant flow corresponding to (30) unit stroke value. is coming.

A cross-sectional view of the existing thermostat assembly (10) in the fully open position is shown in Figure 5 are given. As seen in this figure, the lower valve seat (12.1) is held by the lower valve element (15.3). in this fully open thermostat position, the cooler in the bypass channel the thermostat cannot flow into its inner cavity (10.1). Here, the refrigerant only exchanges heat. flows throughout the circuit.

An exploded perspective view of the existing thermostat assembly (10) is given in Figure 6 .

Here, it is possible to see the wavy wall structure (15.2) of the upper valve element (15.1).

Perspective and cross-section views of the traditional valve structure are shown in Figures a and Tb, respectively. are given.

A cross-sectional view of a conventional thermostat assembly in the fully closed position. Sides are provided. A cross-section of a conventional thermostat assembly in the partially open position view is given in Figure 9. As can be seen from this figure, the upper valve is on the element. the opening between the upper valve seat and the upper valve member as there is no wavy structure it is everywhere. Therefore, the refrigerant flow corresponding to the unit stroke value of the actuator (30) It is not possible to control the amount. Conventional thermostat in fully open position A cross-sectional view of the assembly is given in Figure 10.

Close cross-section of existing and conventional thermostat assemblies in the fully closed position views are given in Figures 11a and 11b, respectively.

The current and partially open position where the thermo element has a stroke value of 1 mm close-up cross-section views of conventional thermostat assemblies are shown in Figures 12a and 12b, respectively. are given.

The current and partially open position where the thermo element has a stroke value of 2 mm Close-up cross-sectional views of conventional thermostat assemblies are shown in Figures 13a and 13b, respectively. are given.

The current and partially open position where the thermo element has a stroke value of 3 mm Close-up cross-sectional views of conventional thermostat assemblies are shown in Figures 14a and 14b, respectively. are given.

The current and fully open position where the thermo element has a stroke value of 4 mm Close-up cross-sectional views of conventional thermostat assemblies are shown in Figures 15a and 15b, respectively. are given.

The incremental line (A) of the existing thermostat assembly and the incremental line of the conventional thermostat assembly The increase line (B) is shown in the graphs given in Figures 16a and 16b, respectively.

Claims (1)

REQUIREMENTS It is a thermostat assembly (10) comprising an upper body (11) having one upper valve seat (11.2) and a valve structure (15) having one upper valve element (15.1). said upper valve element (15.1) contains a wavy wall structure (15.2) formed on its upper surface. It is a thermostat assembly (10) according to claim 1, and said wavy wall structure (15.2) includes at least one peak (C) and a trough (T) connected to it. It is a thermostat assembly (10) according to any one of the previous claims, and the lowest point of each pit (T) can be designed differently from each other according to the cooling need of the cooling system. It is a thermostat assembly (10) according to any one of the preceding claims, and the highest point of each peak (O) can be designed differently from each other according to the cooling need of the cooling system. It is a thermostat assembly (10) according to any of the preceding claims, and the dimensions of each top (C) and trough (T) can be designed independently of each other according to the cooling need of the cooling system. A thermostat assembly (10) according to claims 2 to 5, and in another preferred embodiment of the present invention, said upper valve seat (11.2) has a wavy form.