JPS5926831B2 - Thermal response valve device - Google Patents

Description

[Detailed description of the invention] The present invention relates to thermally responsive valve devices.

Thermoresponsive valve devices with a large flow rate are often used in particular in cooling devices for internal combustion engines.

Such valve devices essentially have three main integral members formed from relatively thin sheet material that are interconnected to create a relatively inexpensive yet structurally rigid and durable device. It has come to be provided with Various heat-responsive valve devices have been proposed in the past, particularly for use in cooling devices for internal combustion engines. However, conventional frame structure thermally responsive valve devices formed from relatively thin sheet metal materials are not constructed to withstand forces that distort the frame flange portion when clamped between two sections of a cooling system. The cost of manufacturing is relatively high, while inexpensive ones cannot withstand the force that distorts the flange portion, causing deformation, making them more likely to break down during operation, and shortening their lifespan. The thermally responsive valve device of the present invention is comprised of a pair of structural members. All parts of each structural member are integral. Each structural member consists of a relatively thin sheet metal material and is formed by bending the material into an overall L-shaped flange section that includes a horizontal annular section, a vertical cylindrical section, and a vertical cylindrical section. and an extension portion extending from the cylindrical portion. The cylindrical portion defines a flow passage. The pair of structural members include a first structural member having a horizontal annular portion, a cylindrical portion extending vertically downward from the horizontal annular portion, and a valve seat portion extending upwardly adjacent to the cylindrical portion; a cylindrical portion extending vertically downward from the horizontal annular portion; and an extension portion extending from the cylindrical portion. horizontal annular portions of the structural members engage each other, and vertical cylindrical portions of the structural members also engage each other;
A double thickness flange section is provided to allow the valve device to be mounted within the fluid conduit. The cylindrical parts of the two structural members can be attached to each other. Typically, a closure member is adapted to engage the valve seat portion of the first structural member to close the flow passageway. a thermally responsive actuator device having a portion that engages the closure member and a portion that engages the first structural member; the thermally responsive actuator device has a portion that engages the closure member;
The extending portion of the structural member has a movable portion, and a resilient member engages the closure member and the second structural member to urge the closure member into a closed position. The present invention provides a framework in which each structural member of a frame structure using relatively thin sheet metal material has a horizontal flange portion and a vertical flange portion, the horizontal flange portion of one structural member engaging the horizontal flange portion of another structural member. , the vertical flange portion of one structural member engages and is joined with the vertical flange portion of the other structural member, so that the flange portion of the frame structure when fastened between the two portions of the cooling system. An object of the present invention is to provide a thermally responsive valve device having sufficient rigidity and strength, which is inexpensive to manufacture and which can withstand forces that distort the valve without causing deformation.

Next, embodiments of the present invention will be described with reference to the accompanying drawings.

The thermally responsive valve device of the present invention mainly consists of three main parts: a bridge member 10, a guide member 12 and a closing member 14.

The bridge member 10 has an annular vertical section 20 and an annular horizontal section 2
It has 2.

An annular valve seat portion 23 adjacent to the lower portion of the vertical portion 20 is connected to a plurality of arm portions 24 extending obliquely upward.
The arm portion is formed as an extension of the valve seat portion 23 and has an annular abutment portion 26 at its end. Said bridge member 1
0 parts 20, 22, 23, 24, 26 are integral,
It is formed from a thin piece of material, such as a metal sheet, by a continuous stamping operation. The guide member 12 has an annular horizontal section 30, an annular vertical section 32, and a plurality of leg sections 34 that extend downwardly as an extension of the vertical section 32 and end in an annular guide section 36. .

Portions 30, 32, 34, 36 of guide member 12 are integral and formed from a thin piece of material, such as a sheet metal, by a continuous stamping operation. Closure member 14 includes a closure portion 40, which has a centrally located and downwardly sloping recess 37 in which a thermally responsive actuator member 41 is retained.

The actuator member is a container 42 made of a thermally responsive material.
and an actuator shaft 44. This thermally responsive actuator member 41 may be of any suitable type. The actuating member 41 has a preferably rigid container 42 in which a material capable of expanding and contracting in response to heat is positioned, and this thermally responsive material
actuator shaft 44 extending from 2;
At this time, it is desirable that relative axial movement occurs between the actuator shaft 44 and the container 42 in accordance with the temperature to which the actuator member 41 is subjected.
The actuator shaft 44 has a thread for fine adjustment, and a nut 46 is screwed onto the thread. This nut 46 is attached to the annular abutment portion 26 in any suitable manner. However, this thermally responsive actuator member 41 can be preconditioned to operate accurately at a predetermined temperature. In such a case, the container 42
No device is required for adjusting the shaft portion 44 relative to the shaft portion 44. The cannula 48 closely surrounds the container 42 and guide member 1
2 through the guide portion 36. The sleeve 48 has a flange 49 in its upper part. Helical flexible member or spring 50, sleeve 48 and guide portion 36
and surrounding the leg portion 34 of the guide member 12 and the cannula 4
It engages with the flange 49 of No.8. This spring 50 therefore springs the closing part 40 towards the valve seat part 23 of the bridge 10. The nut 46 engages the abutment portion 26 to determine the position of the actuator shaft 44 relative to the container 42. The actuator shaft 44 is adjusted by means of a screw relative to the nut 46 and thus its position relative to the container 42. Annular horizontal portion 22 of bridge member 10
and the annular horizontal portion 30 of the guide member 12 are mutually engaged.

The vertical portion 20 of the bridge member 10 is shown engaged with the vertical portion 32 of the guide member 12. annular horizontal portions 22, 30 of the bridge member 10 and the guide member 12, respectively;
and/or the annular vertical portions 20, 32 are attached to each other by suitable means, such as soldering, welding, brazing, etc. Therefore, the annular portions 20, 22, 30, 3
The two members define a structurally strong flange section that is adapted to be clamped between two members of the fluid conduit. By positioning the valve device of the present invention within a fluid conduit,
A reservoir 42 of the actuator member 41 is positioned upstream thereof and engages the fluid before it flows through the valve arrangement.

Closing portion 40, when positioned as shown in FIG. 2, engages valve seat portion 23 and prevents fluid from passing through the fluid conduit. If the fluid engaging container 42 rises above a predetermined temperature, relative movement will occur between container 42 and actuator shaft 44 .

Actuator shaft 44 is held by nut 46 so that it does not move. The container 42 is therefore lowered and the closure part 40 is moved along with it. This closure portion 40 is thus disengaged from the annular valve seat portion 23 and fluid can flow through the opening formed by the annular valve seat portion 23. Such movement of closure portion 40 occurs against the force of flexible member 50.
Once the temperature of the fluid engaging container 42 falls below a predetermined temperature, flexible member 50 moves closure portion 40 and container 42 to the upper position as shown in FIG. close. FIG. 2 shows the valve device of the present invention located within a conduit system, which includes an inlet section 60,
It has a main outlet section 62 and a bypass section 64 in fluid communication with a heat sink or the like.

An auxiliary closing member 66 is attached to the lower part of the cannula 48;
The closure member includes a plurality of projections 68. When the container 42 and the cannula 48 move downward, this auxiliary closure member 6
6 also descends and moves towards the bypass conduit 64, gradually closing the opening to the bypass conduit. Thus, as the primary closure member 14 is lowered to increase fluid flow through the valve arrangement, the auxiliary closure member 66 is lowered to close the bypass conduit 64. The main closure member 14 has a downwardly extending portion 70, a horizontal portion 72, and an upwardly extending peripheral portion 74.

Since the main closing member 14 has such a structure,
It has been found to be very strong and durable while providing effective flow with virtually no turbulence. Third
Figures 4 and 4 show variants of the thermally responsive device according to the invention.

As shown in these figures, the thermally responsive valve device of the present invention has three main members, namely a bridge member 110 and a guide member 112.
and a closure member 114. Bridge member 110 has an annular vertical portion 120 and an annular horizontal portion 122.

An annular valve seat portion 123 located at the bottom of the vertical portion 120 is coupled to a plurality of arm portions 124, which arm portions are connected to the valve seat portion 1.
It extends obliquely upward from 23 and has an annular abutting portion 1 at its end.
26. Portions 120, 12 of bridge member 110
2, 123, 124, and 126 are integral and can be formed from a thin piece of material, such as a metal sheet, by continuous stamping or the like. The guide member 112 has an annular horizontal portion 1
30, having an annular vertical section 132 and a plurality of leg sections 134 extending downwardly from the vertical section 132 and having an annular guide section 136 at its end. Portions 130, 132, 134, 136 of this guide member 112
is integral and can be formed from a thin piece of material, such as a metal sheet, by continuous stamping or the like. The closure member 114 includes a closure portion 140 having a centrally located and downwardly sloping recess 137 in which a thermally responsive actuator member 142 having an actuator shaft 144 is retained. ing.

The thermally responsive actuator member 142 is shown in FIGS.
It can be formed similarly to the actuator member 42 of the device shown in the figures. The lower portion of the actuator member 142 is located within the guide portion 136 of the guide member 112. The actuator shaft 142 is preferably threaded and fitted with a nut 146 that engages the thread. A helical flexible member or spring 150 surrounds actuator member 142 and guide portion 136 and engages leg portion 134 and closure portion 140;
This closing portion 140 is connected to the valve seat portion 123 of the bridge member 110.
It is firing towards the direction of.

Nut 146 engages abutment portion 126 and determines the position of actuator shaft 144 relative to actuator member 142. A portion of the nut 146 extends through and is attached to the annular abutment portion 126. The actuator shaft 144 is screwed into the nut 1.
46 so that its position relative to actuator member 142 can be adjusted. The annular horizontal portion 122 of the bridge member 110 and the annular horizontal portion 130 of the guide member 112 engage each other.

Vertical portion 120 of bridge member 110 is shown engaged with vertical portion 132 of guide member 112. annular horizontal portion 122, 130 and/or annular vertical portion 12
0,132 are attached to each other by any suitable means, such as soldering, welding, brazing, etc. The annular portions 120, 122, 130, 132 thus form a structurally strong flange section that is adapted to be clamped between two members (not shown) of a fluid conduit. Third
The thermally responsive valve devices shown in Figures 1 and 2 are
It is adapted to operate in the same manner as described for the illustrated device.

As described above, the present invention provides a first structural member, or bridge member, and a second structural member, or guide member, each made of relatively thin sheet metal material, with their horizontal annular portions and vertical annular portions or cylindrical portions overlapped. In addition, the double wall structure has sufficient rigidity and strength, has less failure, has a long life, and can be manufactured at low cost.Furthermore, the valve seat part is a vertical annular part, that is, a strong part close to the cylindrical part. By providing this, the valve seat portion is not deformed, and the valve closing member is always reliably seated on the valve seat portion to completely close the valve.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a thermally responsive valve device according to the present invention. FIG. 2 is a side cross-sectional view of the device shown in FIG. 1 as it resides within the fluid conduit system. FIG. 3 is an exploded perspective view showing one variation of the thermally responsive valve device according to the present invention. Figure 4 is the third
FIG. 2 is a side cross-sectional view of the device shown in the figures; 10 in the figure
12 is a bridge member, 12 is a guide member, 14 is a closing member, 20 is an annular vertical portion, 22 is an annular horizontal portion, 23 is an annular valve seat portion, 24 is an arm portion, 26 is an annular abutting portion, 30 is an annular horizontal portion 32 is an annular vertical portion, 34 is a leg portion, 36 is an annular guide portion, 37 is a recess, 40 is a closing portion, 41 is an actuator member, 42 is a container, 44 is an actuator shaft, 46 is a nut, and 48 is a sleeve. 49 is a flange, 50 is a spring, 60 is an inlet portion, 62 is a main outlet portion, 64 is a bypass portion, 66 is an auxiliary closing member, 68 is a projection, 70 is a downwardly extending portion, 72 is a horizontal portion, 74 is a This is the surrounding area.

Claims (1)

[Claims] 1 a frame clamped between two parts of the cooling device and having an annular valve seat portion forming a fluid port; a closing member normally engaged with the annular valve seat portion to close said fluid port; a thermally responsive actuator device for moving a member away from the valve seat portion; and a resilient device engaging the frame and the closure member to force the closure member toward the valve seat portion. In a thermally responsive valve device of the type disposed in a cooling device, the frame has a pair of structural members, one of the structural members being a first structural member and the other structural member being a second structural member. wherein all portions of each structural member are integral and each structural member is comprised of a relatively thin sheet metal material having a given thickness, and each of the first structural member and second structural member has a horizontal annular shape. portions, said horizontal annular portions engaging and joined together, said horizontal annular portion having a horizontal flange of thickness equal to twice a given thickness of said thin metal sheet material, and disposed between and directly fastened between two parts of the cooling device, each said structural member having a cylindrical portion extending downwardly from said horizontal annular portion, said cylindrical portion being adapted to a given thickness of said thin metal sheet material; vertical flange portions having vertical flange portions equal to twice the thickness of the thin metal sheet material, said flange portions having a thickness equal to twice the given thickness of said thin metal sheet material and having said the first structural member having a rigid structure in a critical clamping area capable of withstanding forces that would distort the frame, the first structural member having a valve seat portion adjacent to the cylindrical portion and extending upwardly from a lower portion of the cylindrical portion; and the second structural member has an extending portion extending downwardly from the cylindrical portion and includes a device for coupling the thermally responsive actuator device to the first structural member and the closure member for moving the closure member. and wherein the closing member engages the valve seat portion of the first structural member to close the fluid port.