Double-orifice piston cooling nozzle

Abstract

The utility model discloses a double-orifice piston cooling nozzle, which is used for cooling a piston and comprises a nozzle body and a cooling component, and the nozzle body is provided with a flow channel for cooling liquid to flow through; the cooling assembly comprises a runner pipe, a first spray head and a second spray head, the runner pipe communicates with the runner so that cooling liquid can flow to the first spray head and the second spray head, the first spray head corresponds to a first cooling cavity of the piston, and the second spray head corresponds to a second cooling cavity of the piston; the first spray head is communicated with the runner through a runner pipe, corresponds to the first cooling cavity and is used for enabling cooling liquid to enter the first cooling cavity of the piston for cooling, and the second spray head is communicated with the runner through a runner pipe, corresponds to the second cooling cavity and is used for enabling the cooling liquid to enter the second cooling cavity of the piston for cooling. The first cooling cavity and the second cooling cavity of the piston are both provided with special cooling liquid supply spray heads, the problem that the infusion efficiency of the cooling liquid is low can be solved, and then the cooling effect on the piston head and the piston skirt is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of internal combustion engine cooling, in particular to a double-spray hole piston cooling nozzle. Background Art

[0002] In high-performance internal combustion engines, piston cooling is crucial to maintaining stable engine operation and extending engine life. Traditional piston cooling methods usually rely on cooling through a cooling cavity on the top of the piston. However, this structure cannot cover all hot areas of the piston, especially the piston skirt, resulting in low cooling efficiency of the piston. In the existing technology, dual cooling cavities are provided on the piston to cool the piston skirt, but there is a lack of a coolant infusion system suitable for dual-cooling-cavity pistons, resulting in low coolant infusion efficiency and the dual cooling cavities cannot fully exert their cooling function.

[0003] Therefore, how to provide a dual-spray hole piston cooling nozzle to improve the above-mentioned disadvantages is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0004] The purpose of the utility model is to provide a dual-spray hole piston cooling nozzle, which can avoid the problem of low coolant infusion efficiency and thus improve the cooling effect on the piston head and piston skirt.

[0005] To achieve the above-mentioned purpose, the utility model provides a dual-spray hole piston cooling nozzle for cooling the piston, comprising:

[0006] The nozzle body is provided with a flow channel for the circulation of the coolant;

[0007] The cooling assembly includes a circulation pipe, a first nozzle and a second nozzle. The circulation pipe is connected to the flow channel to allow coolant to flow to the first nozzle and the second nozzle. The first nozzle corresponds to the first cooling cavity of the piston, and the second nozzle corresponds to the second cooling cavity of the piston.

[0008] Preferably, the flow pipe includes a converging section and two diverting sections, one end of the converging section is connected to the flow channel, and the other end of the converging section is connected to one end of the two diverting sections, the first nozzle is assembled at one end of a diverting section away from the converging section, and the second nozzle is assembled at one end of the other diverting section away from the converging section.

[0009] Preferably, the circulation pipe includes a first pipeline and a second pipeline, the first pipeline and the second pipeline are arranged at intervals, and one end of the first pipeline and the second pipeline are both connected to the flow channel, the first nozzle is assembled at the end of the first pipeline away from the flow channel, and the second nozzle is assembled at the end of the second pipeline away from the flow channel.

[0010] Preferably, the nozzle body is provided with a liquid outlet for the coolant to flow out of the flow channel, the liquid outlet is located at one end of the nozzle body in its own axial direction, and the flow pipe is threadedly connected or welded to the liquid outlet.

[0011] Preferably, the central axis of the first nozzle and the central axis of the second nozzle are parallel to each other.

[0012] Preferably, the interior of the nozzle body is a hollow structure to form a flow channel, and the circumferential surface of the nozzle body is partially concave into an arc surface to form an annular groove. An opening connected to the flow channel is provided on the arc surface, and the opening is used to supply the coolant flowing into the annular groove to flow into the flow channel.

[0013] Preferably, the axial direction of the annular groove is collinear with the axial direction of the nozzle body, and the opening comprises a first opening and a second opening arranged along the axial direction of the annular groove, and the first opening and the second opening are arranged alternately.

[0014] Preferably, there are multiple first openings, and all the first openings are evenly distributed along the circumference of the arc-shaped surface; there are multiple second openings, and all the second openings are evenly distributed along the circumference of the arc-shaped surface.

[0015] Preferably, the first opening and the second opening are located at one end of the arc surface close to the flow tube, and the axes of the first opening and the second opening are arranged at an angle.

[0016] Preferably, the nozzle body is further provided with a first sealing surface and a second sealing surface, and the first sealing surface and the second sealing surface are located at two ends of the annular groove in the axial direction thereof.

[0017] Compared with the above-mentioned background technology, the double-nozzle piston cooling nozzle provided by the present invention is used to cool the piston, including a nozzle body and a cooling assembly. The nozzle body is provided with a flow channel for the circulation of coolant; the cooling assembly includes a flow pipe, a first nozzle and a second nozzle. The flow pipe is connected to the flow channel for the circulation of coolant to the first nozzle and the second nozzle. The first nozzle corresponds to the first cooling cavity of the piston, and the second nozzle corresponds to the second cooling cavity of the piston.

[0018] Specifically, a flow channel is used to circulate coolant, and a first nozzle is provided that is connected to the flow channel through a flow pipe and corresponds to the first cooling cavity, so that the coolant enters the first cooling cavity of the piston for cooling. A second nozzle is provided that is connected to the flow channel through a flow pipe and corresponds to the second cooling cavity, so that the coolant enters the second cooling cavity of the piston for cooling. The first cooling cavity and the second cooling cavity of the piston both have dedicated coolant supply nozzles, which can avoid the problem of low coolant infusion efficiency and thereby improve the cooling effect on the piston head and piston skirt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, obviously, the drawings in the following description are only the embodiments of the present application, and for the ordinary skilled in the art, other drawings can also be obtained without creative labor on the premise of the provided drawings.

[0020] Figure 1 The structure diagram of the double-nozzle piston cooling nozzle provided by the embodiments of the present application.

[0021] Among them:

[0022] 100-nozzle body, 110-arc surface, 120-first opening, 130-second opening, 140-first sealing surface, 150-second sealing surface;

[0023] 200-flow pipe, 210-first section, 220-second section, 230-third section;

[0024] 300-first nozzle.

[0025] 400-second nozzle. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the present application will be described clearly and completely in the following by combining the drawings in the embodiments of the present application, obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0027] In order to make the person skilled in the art better understand the technical scheme of the present application, the present application will be further described in detail by combining the drawings and specific embodiments.

[0028] In the description of the present application, it is understood that the directions or position relationships indicated by the terms "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the positions or elements must have a specific direction, be constructed and operated in a specific direction, therefore, it cannot be understood as a limitation of the present application.

[0029] The purpose of the present application is to provide a double-nozzle piston cooling nozzle, which can avoid the problem of low cooling liquid infusion efficiency, and further improve the cooling effect on the piston head and the piston skirt.

[0030] Please refer to Figure 1To achieve the above-mentioned purpose, the present invention provides a dual-spray hole piston cooling nozzle for cooling the piston, comprising a nozzle body 100 and a cooling assembly.

[0031] The nozzle body 100 is arranged at a preset position of the cooling system, which is fixed relative to the engine housing. The nozzle body 100 is provided with a flow channel for the circulation of coolant. The piston is cooled by the coolant flowing out along the channel to increase the service life of the piston. The piston generally includes a piston head and a piston skirt. The piston head is the end of the piston away from the connecting rod. The piston head and the piston skirt are respectively provided with a first cooling cavity and a second cooling cavity to increase the flow range of the coolant and achieve more comprehensive cooling of the piston.

[0032] The cooling assembly includes a circulation pipe 200, a first nozzle 300 and a second nozzle 400. The circulation pipe 200 is connected to the flow channel to allow the coolant to flow to the first nozzle 300 and the second nozzle 400. The first nozzle 300 corresponds to the first cooling cavity of the piston, and the second nozzle 400 corresponds to the second cooling cavity of the piston. The coolant can be sprayed into the first cooling cavity through the first nozzle 300, and the coolant can be sprayed into the second cooling cavity through the second nozzle 400.

[0033] A flow channel is provided for circulating coolant, and a first nozzle 300 connected to the flow channel through a circulation pipe 200 and corresponding to the first cooling cavity is provided for allowing the coolant to enter the first cooling cavity of the piston for cooling. A second nozzle 400 connected to the flow channel through the circulation pipe 200 and corresponding to the second cooling cavity is provided for allowing the coolant to enter the second cooling cavity of the piston for cooling. Both the first cooling cavity and the second cooling cavity of the piston have dedicated coolant supply nozzles, which can avoid the problem of low coolant infusion efficiency and thereby improve the cooling effect on the piston head and piston skirt.

[0034] In one embodiment, the circulation pipe 200 includes a converging section and two diverting sections, one end of the converging section is connected to the flow channel, and the other end of the converging section is connected to one end of the two diverting sections, the first nozzle 300 is assembled at one end of a diverting section away from the converging section, and the second nozzle 400 is assembled at one end of the other diverting section away from the converging section. The overall circulation pipe 200 can be in an integrated "Y" shape, and the circulation of the coolant is achieved by connecting a converging section with the flow channel, and then the diversion of the coolant is achieved through the two diverting sections. The first nozzle 300 is installed in one diverting section, and the second nozzle 400 is installed in the other diverting section. The circulation pipe 200 is arranged as an integrated unit, which can ensure that the positions of the first nozzle 300 and the second nozzle 400 are relatively stable, so that the coolant can flow to the preset position, and at the same time, part of the circulation pipe 200 can be saved.

[0035] In one embodiment, the circulation pipe 200 includes a first pipeline and a second pipeline, the first pipeline and the second pipeline are arranged at intervals, and one end of the first pipeline and the second pipeline are both connected to the flow channel, the first nozzle 300 is installed at the end of the first pipeline away from the flow channel, and the second nozzle 400 is installed at the end of the second pipeline away from the flow channel, that is, the first pipeline and the second pipeline are independently arranged, and the first pipeline and the second pipeline are connected to different positions of the flow channel, so that the coolant can flow to the first nozzle 300 installed in the first pipeline and the second nozzle 400 installed in the second pipeline, and the coolant can also enter the first cooling cavity through the first nozzle 300 and enter the second cooling cavity through the second nozzle 400.

[0036] It should be noted that when the circulation pipe 200 includes a first pipeline and a second pipeline that are independent of each other, the first pipeline and the second pipeline both include a first section 210, a second section 220 and a third section 230 that are connected in sequence. Taking the first pipeline as an example, the first section 210 is connected to the first outlet in the flow channel for the coolant to flow out. Preferably, the extension direction of the first section 210 is consistent with the extension direction of the central axis of the first outlet to reduce the coolant circulation resistance. The extension direction of the third section 230 is consistent with the extension direction of the central axis of the inlet for the coolant to enter the first cooling cavity, so that the coolant is aligned with the inlet to enter the first cooling cavity, avoiding excessive coolant loss outside the first cooling cavity during the injection / spraying of the coolant into the first cooling cavity. The second section 220 is connected to the first section 210 and the third section 230. The length of the second section 220 can change the distance between the first nozzle 300 installed on the third section 230 and the inlet of the first cooling cavity to adjust the injection / spraying accuracy of the coolant.

[0037] It should be noted that the nozzle body 100 is provided with an outlet for the coolant to flow out of the flow channel. The outlet is located at one end of the nozzle body 100 in its own axial direction. The circulation tube 200 is threaded or welded to the outlet. The shape, angle, length, etc. of the circulation tube 200 are adjusted according to the preset flow path of the coolant in the circulation tube 200 and the angle when flowing out along the circulation tube 200 to ensure that the coolant can accurately reach the preset cooling area. The circulation tube 200 is then installed at the outlet. When threaded connection is adopted, the installation and disassembly of the circulation tube 200 can be facilitated. When welding is adopted, the stability of the connection between the circulation tube 200 and the nozzle body 100 can be improved. Preferably, the direction of the first nozzle 300 is parallel to the direction of the second nozzle 400, that is, the central axis of the first nozzle 300 and the central axis of the second nozzle 400 are parallel to each other, which can avoid the phenomenon of the coolant sprayed along the first nozzle 300 and the coolant sprayed along the second nozzle 400 having overlapping paths.

[0038] In one embodiment, the interior of the nozzle body 100 is a hollow structure to form a flow channel, and the circumferential surface portion of the nozzle body 100 is concave into an arcuate surface 110 to form an annular groove. The arcuate surface 110 specifically includes a cylindrical surface and two connecting surfaces. The cylindrical surface is located in the middle of the arcuate surface 110 on its own axis, and the connecting surfaces are located at both ends of the cylindrical surface and connected to the outer circumferential surface of the nozzle body 100. An opening connected to the flow channel is opened on the arcuate surface 110, and the opening is used to allow the coolant flowing into the annular groove to flow into the flow channel.

[0039] The first and second openings 120, 130 are arranged in an axial direction of the annular groove, and the first and second openings 120, 130 are arranged in an alternating manner. Specifically, there is a gap between the first opening 120 and the adjacent second opening 130 in the axial direction of the annular groove, so that coolant at different positions can flow into the flow channel. Preferably, there are multiple first openings 120, and all first openings 120 are evenly distributed along the circumference of the arc surface 110. There are multiple second openings 130, and all second openings 130 are evenly distributed along the circumference of the arc surface 110. The number of the first openings 120 and the second openings 130 is the same. The first opening 120 and the second opening 130 are located at one end of the arc surface 110 close to the flow tube 200, and the axes of the first opening 120 and the second opening 130 are arranged at an angle. The shape and size of the first opening 120 and the second opening 130 can be adjusted according to actual needs, and the above purpose can be achieved.

[0040] In addition, the nozzle body 100 is further provided with a first sealing surface 140 and a second sealing surface 150. The first sealing surface 140 and the second sealing surface 150 are located at both ends of the annular groove in its own axial direction. The first sealing surface 140 and the second sealing surface 150 can limit the coolant in the annular groove from overflowing along the outer peripheral surface of the nozzle body 100, resulting in a decrease in the coolant pressure in the annular groove, and at the same time can avoid a reduction in the coolant flowing into the flow channel.

[0041] In summary, the present invention provides a dual-spray hole piston cooling nozzle for cooling a piston, comprising a nozzle body 100 and a cooling assembly, the cooling assembly comprising a flow pipe 200, a first nozzle 300 and a second nozzle 400, the flow pipe 200 being connected to the flow channel for coolant to flow to the first nozzle 300 and the second nozzle 400, the first nozzle 300 corresponding to the first cooling cavity of the piston, the second nozzle 400 corresponding to the second cooling cavity of the piston, the flow pipe 200 comprising a first pipeline and a second pipeline, the first pipeline and the second pipeline being spaced apart, and one end of the first pipeline and the second pipeline being connected to the flow channel, the first nozzle 300 being assembled on the first pipeline away from the first pipeline. At one end of the flow channel, a second nozzle 400 is assembled on the end of the second pipeline away from the flow channel, and is used to supply coolant to circulate through the flow channel. A first nozzle 300 is provided, which is connected to the flow channel through a circulation pipe 200 and corresponds to the first cooling cavity, and is used to allow the coolant to enter the first cooling cavity of the piston for cooling. A second nozzle 400 is provided, which is connected to the flow channel through a circulation pipe 200 and corresponds to the second cooling cavity, and is used to allow the coolant to enter the second cooling cavity of the piston for cooling. The first cooling cavity and the second cooling cavity of the piston both have dedicated coolant supply nozzles, which can avoid the problem of low coolant infusion efficiency and thereby improve the cooling effect on the piston head and piston skirt.

[0042] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0043] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0044] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A double-spray hole piston cooling nozzle for cooling a piston, characterized in that: include: The nozzle body (100) is provided with a flow channel for the circulation of the cooling liquid; A cooling assembly includes a circulation pipe (200), a first nozzle (300) and a second nozzle (400), wherein the circulation pipe (200) is connected to the flow channel so as to allow coolant to circulate to the first nozzle (300) and the second nozzle (400), wherein the first nozzle (300) corresponds to a first cooling cavity of the piston, and the second nozzle (400) corresponds to a second cooling cavity of the piston.

2. The dual-spray hole piston cooling nozzle according to claim 1, characterized in that: The flow pipe (200) includes a confluence section and two diversion sections, one end of the confluence section is connected to the flow channel, and the other end of the confluence section is connected to one end of the two diversion sections, the first nozzle (300) is assembled at one end of one of the diversion sections away from the confluence section, and the second nozzle (400) is assembled at one end of the other diversion section away from the confluence section.

3. The dual-spray hole piston cooling nozzle according to claim 1, characterized in that: The circulation pipe (200) comprises a first pipeline and a second pipeline, the first pipeline and the second pipeline are arranged at intervals, and one end of the first pipeline and the second pipeline are both connected to the flow channel, the first nozzle (300) is assembled at the end of the first pipeline away from the flow channel, and the second nozzle (400) is assembled at the end of the second pipeline away from the flow channel.

4. The dual-spray hole piston cooling nozzle according to any one of claims 1 to 3, characterized in that: The nozzle body (100) is provided with a liquid outlet for allowing coolant to flow out of the flow channel, the liquid outlet being located at one end of the nozzle body (100) in its own axial direction, and the flow pipe (200) is threadedly connected or welded to the liquid outlet.

5. The dual-spray hole piston cooling nozzle according to any one of claims 1 to 3, characterized in that: The central axis of the first nozzle (300) and the central axis of the second nozzle (400) are parallel to each other.

6. The dual-spray hole piston cooling nozzle according to any one of claims 1 to 3, characterized in that: The interior of the nozzle body (100) is a hollow structure to form the flow channel, and the circumferential surface portion of the nozzle body (100) is concave into an arc surface (110) to form an annular groove. An opening connected to the flow channel is provided on the arc surface (110), and the opening is used to allow the coolant flowing into the annular groove to flow into the flow channel.

7. The dual-spray hole piston cooling nozzle according to claim 6, characterized in that: The axial direction of the annular groove is colinear with the axial direction of the nozzle body (100), and the opening comprises a first opening (120) and a second opening (130) arranged along the axial direction of the annular groove, and the first opening (120) and the second opening (130) are arranged alternately.

8. The dual-spray hole piston cooling nozzle according to claim 7, characterized in that: There are a plurality of first openings (120), and all of the first openings (120) are evenly distributed along the circumference of the arc-shaped surface (110); there are a plurality of second openings (130), and all of the second openings (130) are evenly distributed along the circumference of the arc-shaped surface (110).

9. The dual-spray hole piston cooling nozzle according to claim 7, characterized in that: The first opening (120) and the second opening (130) are located at one end of the arc surface (110) close to the circulation tube (200), and the axes of the first opening (120) and the second opening (130) are arranged at an angle.

10. The dual-spray hole piston cooling nozzle according to claim 7, characterized in that: The nozzle body (100) is further provided with a first sealing surface (140) and a second sealing surface (150), wherein the first sealing surface (140) and the second sealing surface (150) are located at two ends of the annular groove in its own axial direction.

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