Engine oil control valve body with spiral cooling channel

Abstract

The utility model discloses an engine oil control valve body with a spiral cooling channel. A valve body outer shell and a valve element fixing shell are cylindrical and hollow, and the valve element fixing shell is coaxially embedded in the valve body outer shell in a sliding mode. Two sets of symmetrically-distributed three-dimensional spiral cooling channels are arranged on the inner wall of the valve body outer shell, the variable-pitch design is adopted, the inlet pitch is 5 mm, the outlet pitch is 8 mm, the section is in an inverted trapezoid shape, an oil cooling inlet channel is connected with an oil inlet of the valve element fixing shell, the tail ends are gathered to the same outlet channel, and efficient cooling is achieved. The sliding valve assembly comprises a valve element shell, a valve seat, a valve element and a spring and can automatically adjust the flow of engine oil. The valve body shell and the valve element fixing shell are detachably connected through a flange and a positioning pin, and maintenance is convenient. The valve body is high in cooling efficiency, capable of effectively reducing the oil temperature and improving the engine oil control stability, convenient and fast to maintain, suitable for an engine lubricating system and capable of meeting the requirements for heat dissipation and accurate oil control during high-load operation.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to the valve body of an oil control valve with a spiral cooling channel. Background Technology

[0002] In engine lubrication systems, the performance of the oil control valve is crucial. Existing technologies, such as the oil control valve body proposed in CN206737970U, employ a cylindrical valve body with a fixing plate. The fixing plate has mounting holes at its bent portion for installation. An end plate is internally fixed to the valve body, forming a mounting groove with the end plate. A through hole in the center connects to the interior of the valve body. A connecting sleeve protrudes from the inner surface and is fixed to the valve core. A locating ring on the outer surface prevents valve core movement and avoids oil spillage. This design also eliminates the need for a guide sleeve, simplifying the structure and reducing costs to some extent.

[0003] However, this existing technology has many shortcomings. Regarding cooling, there is no dedicated cooling structure. Facing oil temperatures exceeding 120°C under high engine load, the traditional straight-hole cooling channel is insufficient, leading to easy thermal deformation of the valve body, valve core jamming, accelerated oil aging, and increased risk of mechanical wear. In terms of maintenance convenience, the integrated design requires complete disassembly of the piping for cleaning internal flow channels and valve core maintenance. This is not only time-consuming and labor-intensive, but also, during disassembly, the interference fit between the locating ring and the through hole can easily cause loosening of the connection between the end plate and the valve body, affecting sealing.

[0004] Based on the problems of the existing technology, this utility model aims to improve upon them. By setting a three-dimensional spiral cooling channel with a variable pitch inverted trapezoidal cross-section on the inner wall of the valve body shell, and adopting a two-inlet and one-outlet flow channel layout, the turbulence effect of the cooling medium is enhanced, improving the oil temperature drop and cooling efficiency. The valve body shell and valve core fixing shell are detachable via flanges and locating pins, combined with double sealing rings, improving maintenance convenience and ensuring sealing performance. The slide valve assembly adopts a spring-driven automatic reset structure and a gradually narrowing inlet design, reducing oil flow fluctuations and improving control stability and fluid smoothness to meet the high-load operation requirements of the engine. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a valve body for an oil control valve with a spiral cooling channel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The oil control valve body with spiral cooling channels includes a valve body shell, a valve core retaining shell, and a slide valve assembly for controlling oil flow. Both the valve body shell and the valve core retaining shell are cylindrical hollow structures. The valve core retaining shell is coaxially and slidably embedded inside the valve body shell. The two ends of the valve core retaining shell are an oil inlet and an oil outlet, respectively. The oil inlet end of the valve core retaining shell is sealed to the top of the valve body shell. Inside the valve body shell, there are two sets of two three-dimensional spiral cooling channels symmetrically distributed around its inner wall. The spiral cooling channels adopt a variable pitch design, with an inlet pitch of 5mm and an outlet pitch of 8mm, and an inverted trapezoidal cross-section. The tail end of the spiral cooling channels is connected to the same outlet channel, which is located on the inner wall of the valve body shell. Two oil cooling inlet channels are also provided at the oil inlet end of the valve core retaining shell, which are connected to the oil inlet ports of the two sets of spiral cooling channels.

[0008] Preferably, the spool valve assembly includes a valve core housing fixed to the inner wall of the valve core fixing shell, a valve seat is provided inside the valve core housing, a valve core is slidably embedded in the center of the valve seat, the same spring is provided between the bottom of the valve core and the bottom wall of the bottom end of the valve core housing, and multiple oil outlet ports for oil flow are provided at the bottom of the valve core housing.

[0009] Preferably, two locating pins are symmetrically provided at one end of the oil inlet of the valve core fixing shell. The locating pins are slidably embedded inside the flange, and the flange has locating pin holes that are compatible with the locating pins.

[0010] Furthermore, the same sealing ring is embedded in the oil inlet end of the valve core fixing shell and the sealing contact surface at the top of the valve body shell.

[0011] Furthermore, a sealing ring is also embedded on the top annular surface of the valve core fixing shell.

[0012] Preferably, flanges are provided at both ends of the valve body shell.

[0013] Preferably, the inner annular surface of the oil inlet end of the valve core fixing shell is provided with a gradually narrowing inlet with a 60-degree bevel.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model adopts a three-dimensional spiral cooling channel with a variable pitch inverted trapezoidal cross section, combined with a two-inlet and one-outlet flow channel layout, which significantly enhances the turbulence effect and heat exchange area of ​​the cooling medium, increasing the oil temperature drop by 15% compared to traditional straight-hole channels and improving cooling efficiency by more than 30%. The valve body shell and valve core fixing shell can be quickly disassembled and assembled through flanges and positioning pins. Combined with the double sealing ring design, maintenance time is shortened while ensuring sealing performance. Core components can be quickly replaced, greatly reducing maintenance costs. The spring automatic reset structure and gradually narrowing inlet design of the slide valve assembly ensure that the fluctuation range of oil flow is reduced, effectively improving the stability of oil control and fluid smoothness, meeting the heat dissipation and precise oil control requirements of high-load engine operation.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the oil control valve body with a spiral cooling channel proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the oil control valve body with spiral cooling channel proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the oil inlet end structure of the oil control valve body with spiral cooling channel proposed in this utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the internal structure of the valve body shell of the oil control valve with spiral cooling channel proposed in this utility model.

[0021] Figure 5 This is a schematic cross-sectional view of the internal structure of the valve body shell of the oil control valve with spiral cooling channel proposed in this utility model.

[0022] Figure 6 The oil control valve body with spiral cooling channel proposed in this utility model Figure 2 A magnified schematic diagram of the local structure at point A.

[0023] In the diagram: 1. Valve body shell; 101. Spiral cooling channel; 102. Oil cooling inlet channel; 103. Locating pin hole; 104. Outlet channel; 2. Flange; 3. Valve core fixing shell; 31. Gradient inlet; 32. Locating pin; 33. Sealing ring; 4. Valve core shell; 41. Valve seat; 42. Valve core; 43. Spring; 44. Oil outlet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1, referring to Figures 1 to 6 ,

[0026] I. Overall structural assembly

[0027] The oil control valve body with spiral cooling channel mainly consists of valve body shell 1, valve core fixing shell 3, flange 2, and slide valve assembly:

[0028] Valve body housing 1:

[0029] It is cylindrical and hollow, with flanges 2 welded at both ends or integrally formed, for connecting to external pipelines.

[0030] The inner wall is symmetrically provided with two sets of three-dimensional spiral cooling channels 101. Each channel is an independent spiral structure with a variable pitch design. The inlet pitch is 5mm and the outlet pitch is 8mm. The cross-section is an inverted trapezoid.

[0031] The spiral cooling channel 101 converges at the same outlet channel 104 at its tail end. This channel extends axially along the inner wall of the valve body housing, and the outlet is located near the bottom flange 2 of the valve body housing.

[0032] Valve core retaining housing 3:

[0033] It is coaxially and slidably embedded inside the valve body shell 1, and is made of aluminum alloy or a metal alloy with good thermal conductivity. The two ends are the oil inlet and the oil outlet, respectively.

[0034] The inner ring surface of the oil inlet end is machined with a tapered inlet 31 with a 60-degree bevel and a bevel length of 10mm, which is used to guide the oil to flow in smoothly and reduce impact loss.

[0035] Two symmetrical locating pins 32 are arranged on the outer side of the oil inlet end, with a sliding fit clearance of 0.05mm with the locating pin hole 103 on the flange 2 to ensure coaxiality; the depth of the locating pin hole 103 and the length of the locating pin 32 are both matched at 15mm to achieve precise positioning.

[0036] An O-ring 33 with a cross-sectional diameter of 2mm is embedded in the sealing contact surface between the oil inlet end and the top of the valve body shell 1. An additional lip-shaped sealing ring 33 is provided on the top ring surface to form a double sealing structure to prevent oil leakage.

[0037] Spool valve assembly:

[0038] The valve core housing 4 is fixed to the middle of the inner wall of the valve core fixing housing 3 by interference fit or bolts. The valve seat 41 is fixed in the center of the interior. The diameter of the valve seat center hole is 0.1mm away from the outer diameter of the valve core 42, forming a sliding guide fit.

[0039] A compression spring 43 is installed between the bottom of the valve core 42 and the bottom wall of the valve core housing 4. Under normal conditions, the top of the valve core 42 is in sealing contact with the valve seat 41.

[0040] Four oil outlet ports 44 are evenly distributed around the bottom of the valve core housing 4.

[0041] II. Connection Relationships of Key Components

[0042] Cooling channel connection:

[0043] Oil cooling inlet channels 102 are opened on both sides of the oil inlet end of the valve core fixing shell 3. The channel axis is aligned with the inlet axis of the spiral cooling channel 101, and the sealed connection is achieved by interference fit or welding.

[0044] The valve body housing 1 and the valve core fixing housing 3 are fastened together by bolts on the top flange 2. When disassembling, simply loosen the bolts and pull out the valve core fixing housing 3 along the locating pin 32 to achieve quick maintenance.

[0045] Working principle

[0046] I. Cooling System Workflow

[0047] Cooling medium flows in:

[0048] Low-temperature cooling oil flows into two sets of spiral cooling channels 101 from the two oil cooling inlet channels 102 at the oil inlet end of the valve core fixing shell 3.

[0049] The variable pitch design gradually reduces the flow rate of the cooling oil in the spiral channel. Combined with the turbulence effect generated by the inverted trapezoidal cross section, it increases the contact area and time between the cooling medium and the inner wall of the valve body shell 1, thereby improving the heat exchange efficiency.

[0050] Heat exchange and dissipation:

[0051] The heat absorbed by the valve body housing 1 during the oil control process is transferred through the metal wall to the cooling oil in the spiral cooling channel 101, causing the cooling oil temperature to rise.

[0052] The cooling oil from the two sets of spiral channels eventually flows into the outlet channel 104, is discharged from the bottom of the valve body housing, and enters the external cooling circulation system.

[0053] II. Oil Control Workflow

[0054] Oil flow and valve spool movement:

[0055] High-temperature engine oil flows in from the oil inlet of the valve core retaining shell 3 through the tapered inlet 31, and first passes through the slide valve assembly:

[0056] When the oil pressure exceeds the preload of the spring 43, it pushes the valve core 42 downward to compress the spring, opening the central channel of the valve seat 41, and the oil enters the interior of the valve core housing 4.

[0057] The engine oil flows radially out through the oil outlet 44 at the bottom of the valve core housing 4, enters the oil outlet end of the valve core fixing housing 3, and flows to the engine lubrication system.

[0058] Automatic flow regulation and sealing:

[0059] Spring 43 provides real-time feedback on oil pressure. When the system pressure drops, the spring pushes valve core 42 to reset, reducing the valve seat opening and achieving dynamic balance of oil flow.

[0060] The double sealing ring 33 between the valve core fixing shell 3 and the valve body shell 1 ensures complete isolation between the cooling channel and the oil channel, preventing oil from mixing; the fit between the flange 2 and the positioning pin 32 ensures coaxiality during sliding installation, preventing uneven wear from affecting the sealing performance.

[0061] III. Advantages of Detachable Structure

[0062] When maintenance or cleaning is required, simply remove the connecting bolts of flange 2 and pull out valve core fixing shell 3 along the positioning pin 32 to expose the spiral cooling channel 101 and slide valve assembly on the inner wall of valve body shell 1. There is no need to disassemble the entire pipeline, and the maintenance time is reduced by more than 60% compared with the traditional integrated structure.

[0063] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An oil control valve body with a spiral cooling channel, comprising a valve body housing (1), a valve core fixing housing (3), and a slide valve assembly for controlling oil flow, characterized in that, Both the valve body shell (1) and the valve core fixing shell (3) are cylindrical hollow structures. The valve core fixing shell (3) is coaxially and slidably embedded inside the valve body shell (1). The two ends of the valve core fixing shell (3) are the oil inlet and the oil outlet, respectively. One end of the oil inlet of the valve core fixing shell (3) is sealed and abutted against the top of the valve body shell (1). The valve body shell (1) is provided with two sets of two three-dimensional spiral cooling channels (101) symmetrically distributed around its inner wall. The channel (101) adopts a variable pitch design with an inlet pitch of 5mm and an outlet pitch of 8mm, and the cross section is an inverted trapezoid. The tail end of the spiral cooling channel (101) is connected to the same outlet channel (104). The outlet channel (104) is opened on the inner wall of the valve body shell (1). The oil inlet end of the valve core fixing shell (3) is also opened with two oil cooling inlet channels (102). The oil cooling inlet channels (102) are connected to the oil inlet ports of the two sets of spiral cooling channels (101).

2. The oil control valve body with spiral cooling channel according to claim 1, characterized in that, The slide valve assembly includes a valve core housing (4) fixed to the inner wall of the valve core fixing shell (3). The valve core housing (4) is provided with a valve seat (41) inside. A valve core (42) is slidably embedded in the center of the valve seat (41). The same spring (43) is provided between the bottom of the valve core (42) and the bottom wall of the bottom end of the valve core housing (4). The bottom of the valve core housing (4) is provided with multiple oil outlets (44) for oil flow.

3. The oil control valve body with spiral cooling channel according to claim 1, characterized in that, The valve core fixing shell (3) has two symmetrically arranged positioning pins (32) at one end of the oil inlet. The positioning pins (32) are slidably embedded in the flange (2). The flange (2) has positioning pin holes (103) that are compatible with the positioning pins (32).

4. The oil control valve body with spiral cooling channel according to claim 1, characterized in that, The oil inlet end of the valve core fixing shell (3) and the sealing contact surface at the top of the valve body shell (1) are fitted with the same sealing ring (33).

5. The oil control valve body with spiral cooling channel according to claim 1, characterized in that, The valve core fixing shell (3) is also fitted with a sealing ring (33) on the top annular surface.

6. The oil control valve body with spiral cooling channel according to claim 1, characterized in that, Flanges (2) are provided at both ends of the valve body shell (1).

7. The oil control valve body with spiral cooling channel according to claim 1, characterized in that, The valve core fixing shell (3) has a gradually narrowing inlet (31) with a 60-degree bevel on the inner annular surface of the oil inlet end.

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