CN113063110A - Lighting device in engine cylinder - Google Patents
Lighting device in engine cylinder Download PDFInfo
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- CN113063110A CN113063110A CN201911398325.9A CN201911398325A CN113063110A CN 113063110 A CN113063110 A CN 113063110A CN 201911398325 A CN201911398325 A CN 201911398325A CN 113063110 A CN113063110 A CN 113063110A
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- water circulation
- lamp
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- engine
- lamp post
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 181
- 230000003287 optical effect Effects 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 46
- 238000005286 illumination Methods 0.000 claims abstract description 36
- 238000009413 insulation Methods 0.000 claims abstract description 26
- 239000011324 bead Substances 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 14
- 238000009825 accumulation Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V15/00—Protecting lighting devices from damage
- F21V15/005—Measures against vandalism, stealing or tampering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The embodiment of the application provides an in-cylinder lighting device of an engine, which comprises a lamp post, a heat insulation sleeve, a lamp holder and a water circulation cooling device; the lamp post is provided with an inner shaft hole, and the front end of the lamp post is connected with the rear end of the heat insulation sleeve; the front end of the heat insulation sleeve is provided with an optical window; the lamp holder is arranged in the heat insulation sleeve and faces the optical window; the water circulation cooling device is arranged in the inner shaft hole of the lamp post, and the front end of the water circulation cooling device is connected with the rear end of the lamp holder. By last in can stretching into the engine jar with the lamp holder with the help of the lamp pole, realize throwing light on to the engine jar from inside to can provide sufficient illumination intensity, avoid external lighting system to reflect light serious problem simultaneously, improve the image and shoot the quality. In addition, the water circulation cooling device absorbs heat generated by the lamp cap to effectively dissipate heat, so that the service life of the lighting device can be prolonged, the phenomenon that the engine is pre-ignited and knocks due to heat accumulation is avoided, and the water circulation cooling device is suitable for the use requirements of all working conditions of the engine.
Description
Technical Field
The embodiment of the application relates to the technical field of engines, in particular to an in-cylinder illuminating device for an engine.
Background
The engine visualization technology can intuitively reflect the motion process, the mixed gas forming process and the combustion state of parts in an engine cylinder, and has the advantage of no alternatives in the development and fault diagnosis of the engine.
At present, the visual structure of the engine is mainly divided into the following two types: the first type is a transparent cylinder sleeve made of quartz glass, and an LED light source and a camera are arranged outside the cylinder sleeve; the second type is that an endoscope head is arranged on a cylinder cover in a punching way, and an optical fiber lighting device consisting of a light source, an optical fiber and a glass optical head is arranged on the cylinder, the glass optical head is arranged in the cylinder, and bright light emitted by the light source is transmitted to the glass optical head positioned in the cylinder through the optical fiber. However, in the first type of structure, the LED light source is disposed outside the cylinder body, and the transparent glass cylinder sleeve can reflect light seriously during application, resulting in poor quality of photographed images. The second type of structure may cause insufficient illumination due to a large attenuation of light during conduction in application, and may shorten the life of the fiber optic illumination device and induce cylinder pre-ignition and knocking due to poor heat dissipation.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an illumination device in an engine cylinder, so as to overcome the defects in the prior art that the external LED illumination of the engine has a serious reflection, which affects the shooting quality, and the endoscope optical fiber illumination system has insufficient brightness, short service life, and is prone to cause pre-ignition and knocking under medium and high loads.
The embodiment of the application provides an engine in-cylinder lighting device, it includes: the lamp comprises a lamp post, a heat insulation sleeve, a lamp holder and a water circulating cooling device;
the lamp post is provided with an inner shaft hole, and the front end of the lamp post is connected with the rear end of the heat insulation sleeve;
an optical window is arranged at the front end of the heat insulation sleeve, so that light emitted by the lamp holder can be irradiated out through the optical window;
the lamp cap is arranged in the heat insulation sleeve, and faces the optical window;
the water circulation cooling device is arranged in the inner shaft hole of the lamp post, and the front end of the water circulation cooling device is connected with the rear end of the lamp holder and used for absorbing heat generated by the lamp holder.
Optionally, in an embodiment of the present application, the water circulation cooling device includes a water circulation outer sleeve and a water circulation inner sleeve;
the water circulation jacket is arranged in the inner shaft hole of the lamp post, the water circulation jacket is provided with an inner shaft hole, and the front end of the water circulation jacket is matched with the rear end of the lamp holder;
the water circulation inner sleeve is arranged in the inner shaft hole of the water circulation outer sleeve, the front end of the water circulation inner sleeve is spaced from the lamp holder in a preset mode, and the rear end of the water circulation inner sleeve is connected with a cooling water inlet pipe.
Optionally, in an embodiment of the present application, the lamp holder includes an LED lamp bead, an aluminum substrate, and a heat sink; the LED lamp beads are arranged on one side of the aluminum substrate, the radiating fins are arranged on one side of the aluminum substrate opposite to the LED lamp beads, and the radiating fins are provided with cavities for accommodating the front ends of the water circulation inner sleeves.
Optionally, in an embodiment of the present application, a shaft hole at a rear end of the water circulation inner sleeve is larger than a shaft hole at a front end of the water circulation inner sleeve, and a nozzle is disposed at the front end of the water circulation inner sleeve, so that the cooling water is sprayed toward the heat sink through the nozzle.
Optionally, in an embodiment of the present application, a guide positioning surface engaged with the heat sink is disposed at a front end of the water circulation inner sleeve.
Optionally, in an embodiment of the present application, a wire casing is disposed on an outer wall of the water circulation jacket along an axial direction, and is used for accommodating a power line of the LED lamp bead.
Optionally, in an embodiment of the present application, the lighting device in the engine cylinder further includes a sleeve body, and the sleeve body is detachably connected to the engine cylinder head; the sleeve barrel is provided with an inner shaft hole, and the lamp post is arranged in the inner shaft hole of the sleeve barrel.
Optionally, in an embodiment of the present application, the optical window is a hemispherical optical window, a planar optical window, or an inclined plane optical window.
Optionally, in an embodiment of the present application, the lighting device in the engine cylinder further includes a lamp post pressing cap, a flange surface is disposed at a rear end of the lamp post, and the lamp post pressing cap fixes the lamp post in the sleeve body through the flange surface of the lamp post.
Optionally, in an embodiment of the present application, the lighting device in the engine cylinder further includes a water circulation jacket pressing cap, a flange surface is disposed at a rear end of the water circulation jacket, and the water circulation jacket pressing cap fixes the water circulation jacket in the lamp post through the flange surface of the water circulation jacket.
Optionally, in an embodiment of the present application, an inner wall of the sleeve body is clearance-fitted with an outer wall of the lamp post.
Optionally, in an embodiment of the present application, a side wall of the rear end of the water circulation jacket is provided with a drainage hole, and the drainage hole is used for connecting with a drainage connector.
In the embodiment of the application, the lighting device in the engine cylinder can comprise a lamp post, a heat insulation sleeve, a lamp holder and a water circulation cooling device; the lamp post is provided with an inner shaft hole, and the front end of the lamp post is connected with the rear end of the heat insulation sleeve; an optical window is arranged at the front end of the heat insulation sleeve, so that light emitted by the lamp holder is irradiated out through the optical window; the lamp holder is arranged in the heat insulation sleeve and faces the optical window; the water circulation cooling device is arranged in the inner shaft hole of the lamp post, and the front end of the water circulation cooling device is connected with the rear end of the lamp holder and used for absorbing heat generated by the lamp holder. By last lamp pole and heat insulating sleeve connection, the lamp holder setting can stretch into the engine jar with the help of the lamp pole in the lamp holder sets up in heat insulating sleeve, realizes throwing light on in the engine jar from inside to can provide sufficient illumination brightness, avoid external lighting system reflection of light serious problem simultaneously, improve the image and shoot the quality. In addition, the water circulation cooling device absorbs heat generated by the lamp cap to effectively dissipate heat, so that the service life of the lighting device can be prolonged, the heat is prevented from causing the premature ignition and the detonation of the engine when the engine is under a medium-high load, and the use requirements of all working conditions of the engine are met.
Drawings
Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a cross-sectional view of an in-cylinder lighting device of an engine provided in accordance with an embodiment of the present disclosure;
FIG. 2 is a schematic illustration of the application of the in-cylinder lighting arrangement of the engine shown in FIG. 1 to a horizontal bar engine;
fig. 3 is a schematic view of the in-cylinder illumination device of the engine shown in fig. 1 applied to a multi-cylinder endoscope.
Description of the reference symbols
11. Lamp post 12 and heat insulation sleeve
13. Lamp holder 131 and LED lamp bead
132. Aluminum substrate 133 and heat sink
14. Water circulation cooling device 141 and water circulation inner sleeve
142. Water circulation jacket 15 and wire groove
16. Lamp pole pressing sleeve 17 and water circulation jacket tooth sleeve
18. Inner sleeve cutting sleeve joint
Detailed Description
The internal visualization of the engine requires an illumination device to provide sufficient brightness so as to photograph the moving process, the mixed gas forming process and the combustion state of the components in the engine cylinder by an image acquisition device such as a camera or an endoscope. At present, an optical single-cylinder engine usually uses an external LED lamp for illumination, and a vertical-direction-mounted high-speed camera records the processes of spraying, ignition, combustion and the like in a cylinder, but because a transparent glass cylinder sleeve is cylindrical, an external light source can cause violent light reflection, and the imaging quality of the high-speed camera is seriously influenced. The multi-cylinder engine uses the endoscope to record the working process in the cylinder, through installing the optical fiber lighting system and endoscope shooting system respectively after perforating on the cylinder cap, but the light has great attenuation after the transmission on longer optic fibre in the optical fiber lighting system, easily lead to the illumination luminance not enough, and the fiber splice can be ablated to excessive light source, influence the life of optic fibre, and the glass optical head is installed the top surface in the combustion chamber in this system, because of the glass poor thermal conductivity, heat accumulation becomes the hot point source when the engine is middle, heavy load operation, very easily cause the preignition and knocks, damage engine and test equipment.
In order to solve the problems, the engine cylinder lighting device provided by the embodiment of the application realizes lighting in the cylinder of the engine from the inside by installing the lamp holder on the top surface of the engine combustion chamber through the lamp post and the heat insulation sleeve, can avoid the phenomenon of light reflection caused by an external light source when being applied to an optical single-cylinder engine, can solve the problem of insufficient lighting brightness when being applied to a multi-cylinder engine endoscope system and by using a high-brightness LED lamp source. Meanwhile, the lamp cap is continuously cooled by adopting the water circulation cooling device without heat accumulation, so that the lighting device in the engine cylinder provided by the embodiment can meet the continuous operation of the engine under all loads.
The following further describes specific implementation of the embodiments of the present invention with reference to the drawings.
An embodiment of the present application provides an in-cylinder illumination device, as shown in fig. 1, fig. 1 is a cross-sectional view of the in-cylinder illumination device provided in the embodiment of the present application. The engine in-cylinder lighting device 10 may include a lamp post 11, an insulation cover 12, a lamp cap 13, and a water circulation cooling device 14. The lamp post 11 is provided with an inner shaft hole, and the front end of the lamp post 11 is connected with the rear end of the heat insulation sleeve 12. The front end of the heat insulating sleeve 12 may be provided with an optical window so that light emitted from the lamp cap 13 is radiated through the optical window. A lamp cap 13 may be arranged inside the insulating sleeve 12, the lamp cap 13 facing the optical window. The water circulation cooling device 14 may be disposed in an inner shaft hole of the lamp post 11, and a front end of the water circulation cooling device 14 is connected to a rear end of the lamp base 13 for absorbing heat generated by the lamp base 13. Through the lamp pole with the heat insulating sleeve be connected, the lamp holder setting can stretch into the engine jar with the lamp holder in the heat insulating sleeve, realize throwing light on to the engine jar from inside with the help of the lamp pole to can provide sufficient illumination brightness, avoid the serious problem of external lighting system reflection of light simultaneously, improve image and shoot the quality. In addition, the water circulation cooling device absorbs heat generated by the lamp cap to effectively dissipate heat, so that the service life of the lighting device can be prolonged, the phenomenon that the engine is pre-ignited and knocks due to heat accumulation is avoided, and the water circulation cooling device is suitable for the use requirements of all working conditions of the engine.
In this embodiment, the inner shaft hole of the lamp post 11 may be a hole opened along an axial direction at an axial center of the lamp post 11. The lamp post 11 having the inner axial hole can be understood as the lamp post 11 having a hollow structure. Optionally, the inner shaft hole of the lamp post 11 may be finished, so as to be in clearance fit with the outer wall of the water circulation cooling device 14, and ensure convenience in assembling the lamp post 11 and the water circulation cooling device 14. Alternatively, the water circulation cooling device 14 may include a water circulation inner casing 141 and a water circulation outer casing 142. The inner shaft bore of the light pole 11 may be clearance fit with the outer wall of the water circulation jacket 142.
In the present embodiment, the front end of the lamp post 11 can be understood as an end facing the engine block when the in-cylinder illumination device 10 is in use, and the rear end of the lamp post 11 is an end opposite to the front end of the lamp post 11, that is, an end far away from the engine block when the in-cylinder illumination device 10 is in use. The rear end of the sleeve 12 is understood to be the end connected to the front end of the pole 11, and the rear end of the sleeve 12 is the end opposite to the front end of the sleeve 12, i.e. the end remote from the pole 11. The front end of the water circulation cooling device 14 may be understood as the end towards the engine block when the in-cylinder illumination device 10 is in use, and the rear end of the water circulation cooling device 14 is the end opposite to the front end of the water circulation cooling device 14, i.e. the end away from the engine block when the in-cylinder illumination device 10 is in use. The rear end of the burner 13 is understood to be the end connected to the front end of the water circulating cooling device 14, the front end of the burner 13 being the end opposite the rear end of the burner 13, i.e. the end remote from the water circulating cooling device 14.
Optionally, the front end of the lamp post 11 can be provided with an internal thread, and the internal thread is matched with the external thread of the heat insulation sleeve 12 to realize detachable connection, so that the heat insulation sleeve can be detached and replaced quickly. The rear end of the lamp post 11 may be provided with a flange surface to facilitate the pressing and fixing of the lamp post 11 in its mounting position. The rear end of the lamp post 11 may be provided with external threads to facilitate the internal thread fit of the water circulation cooling device 14, and in particular, the internal threads of the water circulation jacket 142 in the water circulation cooling device 14.
Alternatively, the sleeve 12 may be a sapphire sleeve for insulating the combustion chamber of an engine from high temperature and high pressure. The rear end of the heat insulation sleeve 12 can be provided with an external thread, and the external thread is matched with the internal thread at the front end of the lamp pole 11 to realize detachable connection, so that the heat insulation sleeve can be rapidly detached and replaced.
Optionally, the rear end of the heat insulating sleeve 12 may be provided with a flange, through which sealing between the heat insulating sleeve 12 and the lamp post 11 and between the heat insulating sleeve 12 and the engine cylinder head may be achieved. The circumferential surface of the flange of the heat insulation sleeve 12 can be provided with a counter bore so as to be convenient for screwing the heat insulation sleeve 12 on the lamp post 11 by using a special tool. The number of the counter bores is not limited in this embodiment, for example, the number of the counter bores may be 2, 3, and the like.
Optionally, the front end of the thermal sleeve 12 may be provided with a counter bore through which an optical window may be inlaid in the thermal sleeve 12. An optical window in the front end of the sleeve 12 allows light from the lamp head 13 to pass through to illuminate the target area.
The material of the optical window is not limited, and the optical window can be set according to actual requirements. For example, for diesel engines and supercharged gasoline engines, sapphire glass may be used for the optical window due to the high temperature pressure in the combustion chamber. For another example, for a naturally aspirated gasoline engine, the optical window may be made of quartz glass due to the relatively low temperature pressure within the combustion chamber.
In addition, the optical window may be shaped differently as desired. Alternatively, the optical window may be a hemispherical optical window, a planar optical window, or a slanted-plane optical window. The hemispherical optical window facilitates illumination of the area directly in front of the optical window. The planar optical window is advantageous for expanding the illumination range. The optical window of the slanted type facilitates illumination of the area of the side facing the slanted face of the optical window. The illumination requirements of different target areas, such as various areas in the engine cylinder, can be met by selecting optical windows of different shapes.
Optionally, the lamp head 13 may include LED beads 131, an aluminum substrate 132, and heat dissipation fins 133. The LED lamp beads 131 may be disposed on one side of the aluminum substrate 132, and the heat dissipation fins 133 may be disposed on one side of the aluminum substrate 132 opposite to the LED lamp beads 131. The LED lamp beads 131 can be fixed on the aluminum substrate 132 through a welding method, and power lines of the lamp beads 131 can be LED out through a copper foil circuit laid on the aluminum substrate 132. Due to the adoption of the LED lamp beads, the LED lamp beads are simple to install and easy to replace, and the requirements of different tests on the brightness and the illumination area can be met. The heat radiating fins 133 can be used for guiding out heat generated by the LED lamp beads 131, and guiding out the heat through circulating water of the water circulation cooling device 14. Alternatively, the heat sink 133 may be provided with a cavity for cooperating with the water circulation cooling device 14, for example, a cavity for accommodating the front end of the water circulation inner sleeve 141 of the water circulation cooling device 14. For example, the cavity may be disposed in a central region of the heat sink 133. Alternatively, the rear ends of the heat dissipating fins 133 may be chamfered to facilitate assembly with the water circulating jacket 141 of the water circulating cooling device 14. In this embodiment, because adopt water circulative cooling device to cool off LED lamp pearl, can select for use powerful LED lamp pearl for use for a short time in the condition that the size allows. Meanwhile, in order to improve space utilization, a cylindrical lamp bead should be used.
Alternatively, in the water circulation cooling device 14 including the water circulation jacket 142 and the water circulation jacket 141, the water circulation jacket 142 may be disposed in an inner axial hole of the lamp post 11, the water circulation jacket 142 has an inner axial hole, and the front end of the water circulation jacket 142 is engaged with the rear end of the lamp cap 13. The water circulation inner 141 may be disposed in an inner axial hole of the water circulation outer sleeve 142, a predetermined distance is provided between the front end of the water circulation inner 141 and the lamp head 13, and the rear end of the water circulation inner 141 is connected to a cooling water inlet pipe.
The inner shaft hole of the water circulation jacket 142 may be a hole formed in the axial direction at the axial center of the water circulation jacket 142. The water circulation jacket 142 having an inner axial bore is understood to mean that the water circulation jacket 142 is a hollow structure. Optionally, the inner wall of the front end of the water circulation jacket 142 is in clearance fit with the outer wall of the rear end of the lamp cap 13. Specifically, the front end of the water circulation jacket 142 and the rear end of the lamp cap 13 may be finish-machined, so that the inner wall of the front end of the water circulation jacket 142 is in clearance fit with the outer wall of the rear end of the lamp cap 13. To prevent cooling water from leaking, optionally, glue may be sealed in the gap between the inner wall of the front end of the water circulation jacket 142 and the outer wall of the rear end of the lamp cap 13.
The front end of the water circulation jacket 142 may be understood as the end of the water circulation jacket 142 that faces toward the engine block when the in-cylinder illumination device 10 is in use, and the rear end of the water circulation jacket 142 is the end opposite the front end of the water circulation jacket 142, i.e., the end that faces away from the engine block when the in-cylinder illumination device 10 is in use. The front end of the water circulation jacket 141 may be understood as the end facing the engine block when the in-cylinder illumination device 10 is in use, and the rear end of the water circulation jacket 141 is the end opposite to the front end of the water circulation jacket 142, i.e., the end away from the engine block when the in-cylinder illumination device 10 is in use. The water circulation jacket 141 is a pipe line into which cooling water enters. The cooling water enters the water circulation inner sleeve 141 through the water inlet pipe, flows to one side of the lamp cap 13 through the water circulation inner sleeve 141, absorbs heat generated by light emission of the lamp cap 13, and then flows into the water circulation outer sleeve 142, so that the lamp cap 13 is cooled in a water cooling mode without heat accumulation, and therefore, even if the engine runs for a long time under a full-load tool, no hot spot is generated to cause pre-ignition or detonation, and the use requirements of all working conditions of the engine can be met.
The front end of the water circulation inner 141 is in clearance fit with a cavity for receiving the front end of the water circulation inner 141 on the heat sink 133 to introduce the cooling water. In a working state, cooling water enters the water circulation outer sleeve 142 after absorbing heat generated by the LED lamp beads 131 through the cavity of the water circulation inner sleeve 141 in the radiating fins 133, so that the lamp holder 13 is cooled in a water cooling mode. Alternatively, the front end of the water circulation jacket 141 may be provided to have a smaller outer diameter to be fitted with a clearance with the cavity of the heat sink 133. Alternatively, the rear end of the heat sink 133 may be chamfered to facilitate assembly with the water circulation jacket 141.
Alternatively, the axial hole at the rear end of the water circulation inner 141 may be larger than the axial hole at the front end of the water circulation inner 141. By setting the shaft hole at the rear end of the water circulation inner sleeve 141 to be large, the water flow can be increased and the water pressure at the outlet at the front end of the water circulation inner sleeve 141 can be raised. Further alternatively, a nozzle is provided at the front end of the water circulation inner case 141 so that the cooling water is sprayed toward the heat sink through the nozzle. The nozzle can be conical, cooling water with certain pressure is uniformly sprayed by the peripheral radiating fins under the spraying action of the nozzle, and the radiating effect is improved.
Alternatively, the front end of the water circulation inner 141 may be provided with a guide positioning surface engaged with the heat sink 133. The guide positioning surface can ensure that the front end of the water circulation inner sleeve 141 and the aluminum base plate 132 have a proper distance. In other words, the guiding and positioning surface can ensure a predetermined distance between the front end of the water circulation sleeve 141 and the lamp head 13. In the case that the front end of the water circulation inner sleeve 141 has a nozzle, the guiding and positioning surface can ensure that the nozzle at the front end of the water circulation inner sleeve 141 has a proper distance from the aluminum substrate 132, so as to facilitate the nozzle to spray the peripheral heat sink 133. Optionally, the guiding and positioning surface has a chamfer angle, and the chamfer angle can be in contact fit with the chamfer angle of the heat sink 133 to fix the front end of the water circulation inner sleeve 141 and reduce the vibration of the water circulation inner sleeve 141 following the engine.
Optionally, the rear end of the water circulation inner sleeve 141 is connected with a cooling water inlet pipe through a cutting sleeve joint.
Optionally, a wire groove 15 is formed in the outer wall of the water circulation jacket 142 along the axial direction, and is used for accommodating a power line of the LED lamp bead 131. Specifically, after being LED out through a copper foil circuit laid on the aluminum substrate 132, the power line of the LED lamp bead 131 is LED out through the wire slot 15 on the outer wall of the water circulation jacket 142. Because the water cooling circulation system is sealed between the water circulation outer sleeve 142, the water circulation inner sleeve 141 and the lamp holder 13, the power line of the LED lamp bead 131 is LED out through the wire slot 15 of the water circulation outer sleeve 142, the power line is completely isolated from the cooling water, and short circuit is not easy to occur. The number and the position of the wire grooves are not limited in the embodiment. Preferably, one wire groove 15 may be respectively provided at both symmetrical sides of the outer wall of the water circulation jacket 142.
Further optionally, a plastic sleeve is poured at the rear end of the water circulation jacket 142 by a thermoforming method, and the power line of the LED lamp is LED out through the plastic sleeve via the line slot 15 on the water circulation jacket 142.
Alternatively, the inner wall of the front end of the water circulation jacket 142 may be clearance fitted with the outer wall of the rear end of the lamp post 11. Specifically, the rear end of the water circulation jacket 142 and the inner shaft hole of the rear end of the lamp post 11 may be finish machined, so that the rear end of the water circulation jacket 142 is in clearance fit with the rear end of the lamp post 11.
Optionally, the lighting device 10 in the engine cylinder may further include a water circulation outer jacket pressing cap 17, a flange surface is disposed at the rear end of the water circulation outer jacket 142, and the water circulation outer jacket pressing cap 17 fixes the water circulation outer jacket 142 in the lamp post 11 through the flange surface of the water circulation outer jacket 142. Further optionally, the front end of the water circulation outer sleeve pressing cap 17 is provided with an internal thread, the rear end of the water circulation outer sleeve 142 can be provided with an external thread, and the water circulation outer sleeve pressing cap 17 and the water circulation outer sleeve 142 are fixed together through a threaded connection. Further optionally, the water circulation outer pressing cap 17 is provided with an inner hexagonal structure to facilitate the installation of the water circulation outer pressing cap.
Optionally, a side wall of the rear end of the water circulation housing 142 is provided with a drainage hole, and the drainage hole is used for connecting with a drainage connector. For example, the drainage bore can be a threaded bore, and correspondingly, the drainage nipple can be provided with an external thread, through which the cooling water can be conducted away.
Optionally, the engine in-cylinder lighting device 10 may further include an inner sleeve snap fitting 18 for securing the water circulation inner sleeve 141 and the water circulation outer sleeve 142 together. Further optionally, the front end of the inner sleeve snap joint 18 may be provided with an internal thread, the rear end of the water circulation outer sleeve 142 may be provided with an external thread, and the inner sleeve snap joint 18 and the water circulation outer sleeve 142 are fixed together by threaded connection. Optionally, the rear end of the inner bayonet joint is provided with an inner hexagonal structure to facilitate installation of the inner bayonet joint.
Further optionally, an oblique angle is processed at the rear end of the inner shaft hole of the water circulation outer sleeve 142, and the water circulation inner sleeve 141 and the water circulation outer sleeve 142 are fixed together through the inner sleeve bayonet joint 18 and sealed through the oblique angle and a conical sealing ring on the inner sleeve bayonet joint 18.
Optionally, correspondingly, the inner sleeve ferrule connector is provided with an internal thread matched with the water circulation outer sleeve 142, and the detachable connection is realized through thread matching.
Optionally, the in-cylinder illumination device 10 of the engine may further include a sleeve body 19, and the sleeve body 19 is detachably connected to the engine cylinder head; the sleeve body 19 is provided with an inner shaft hole, and the lamp post 11 is arranged in the inner shaft hole of the sleeve body 19. The inner shaft hole of the sleeve body 19 may be a hole opened in the axial direction at the axial center of the sleeve body 19. The sleeve body 19 being provided with an internal axial bore is to be understood as the sleeve body 19 being hollow internally. The lamp post 11 is arranged in the inner shaft hole of the sleeve body 19, and the lamp post 11 and the sleeve body 19 are coaxial. By providing the sleeve body, the in-cylinder illumination device 10 can be detachably mounted on the engine head.
Further optionally, the front end of the sleeve body 19 may be provided with an external thread, an internal thread matched with the external thread at the front end of the sleeve body 19 may be provided on the engine cylinder cover, and the sleeve body 19 and the engine cylinder cover are detachably connected through the external thread at the front end of the sleeve body 19 and the internal thread on the engine cylinder cover. Here, the front end of the sleeve body 19 may be understood as an end connected to the engine head when the in-cylinder illumination device 10 is mounted on the engine head, and the rear end of the sleeve body 19 may be understood as an end opposite to the front end of the engine. To increase the fastening of the connection, the front end of the sleeve body 19 and the engine head may optionally use a larger threaded fit. Optionally, a flange surface and an outer hexagonal structure may be provided at the front end of the sleeve body 19, and the flange surface is used for accurately positioning the installation depth of the sleeve body 19 and increasing the connection strength; the outer hexagonal configuration facilitates the use of a wrench to tighten the sleeve body 19 onto the engine head.
As a further alternative, the rear end of the sleeve body 19 may be provided with an external thread, which is matched with an internal thread of the lamp post pressure cap 16, for the lamp post to be pressed and fixed on the sleeve body 19. Specifically, the lamp post pressing cap 16 can fix the lamp post 11 in the sleeve body 19 through a flange surface at the rear end of the lamp post 11. Since the lighting device 10 in the engine cylinder provided by this embodiment belongs to a built-in LED lighting system, the optical window at the front end of the lighting device directly contacts with the flame in the engine combustion chamber, soot gradually accumulates and the light transmission performance of the optical window is reduced, and therefore the optical window needs to be cleaned. In this embodiment, only the lamp post pressing cap 16 needs to be opened during cleaning, that is, the part of the engine cylinder lighting device 10 except the sleeve body 19 is taken out, and the operation is simple and quick.
Further alternatively, the inner wall of the sleeve body 19 may be clearance fitted with the outer wall of the lamp stem 11. For example, the rear end of the sleeve body 19 is provided with an inner shaft hole in a finish machining mode, the inner shaft hole is in clearance fit with the outer wall of the lamp post 11, the clearance fit facilitates the assembly and disassembly between the lamp post 11 and the sleeve body 19, and meanwhile vibration of the lamp post 11 in the sleeve body 19 along with an engine is reduced.
It should be noted that, in the present embodiment, the depth of the threaded hole in the engine head for connecting with the front end of the sleeve body 19 and/or the length of the heat insulating sleeve 12 may be adjusted so that the optical window slightly exposes the head in the engine combustion chamber, thereby ensuring illumination of the target area and reducing the influence of the heat insulating sleeve on the air flow in the engine cylinder.
It should be noted that in this embodiment, clearance fit is used between the sleeve body 19 and the lamp post 11, between the lamp post 11 and the water circulation outer sleeve 142, and between the water circulation inner sleeve 141 and the lamp cap 13, so as to ensure convenience of system assembly and reduce vibration of each component caused by engine operation.
According to the embodiment of the application, the LED light source with the water cooling is installed on the top surface of the combustion chamber of the engine, the purpose that the interior of the cylinder of the engine is illuminated from the inside is achieved, the LED light source is applied to an optical single-cylinder engine, the phenomenon that the external light source reflects light can be avoided, the LED light source with the high brightness is applied to a multi-cylinder engine endoscope system, and the problem of insufficient illumination brightness can be solved. Meanwhile, the whole lighting device is continuously cooled by using water cooling, so that the problem of heat accumulation is avoided, and the system can meet the requirement of continuous operation of the engine under all loads. Fig. 2 is a schematic diagram of an application of an in-cylinder illumination device of an engine on a horizontal bar engine according to an embodiment of the application. Fig. 3 is a schematic diagram of an application of the engine in-cylinder lighting device provided by the embodiment of the application to a multi-cylinder endoscope. As can be seen from fig. 2 and 3, the lamp head of the lighting device 10 in the engine cylinder of the present embodiment is respectively located on the horizontal bar engine cylinder 21 and the multi-cylinder internal view mirror 31 by means of lamp poles, so as to illuminate the target area from the inside, and provide sufficient illumination brightness, and meanwhile, the lamp head is cooled by introducing cooling water by adopting a water circulation cooling device, so that the problem of heat accumulation is avoided, and the requirement of continuous operation under all loads of the engine can be met.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (12)
1. An in-cylinder illumination device for an engine, comprising: the lamp comprises a lamp post, a heat insulation sleeve, a lamp holder and a water circulating cooling device;
the lamp post is provided with an inner shaft hole, and the front end of the lamp post is connected with the rear end of the heat insulation sleeve;
an optical window is arranged at the front end of the heat insulation sleeve, so that light emitted by the lamp holder can be irradiated out through the optical window;
the lamp cap is arranged in the heat insulation sleeve, and faces the optical window;
the water circulation cooling device is arranged in the inner shaft hole of the lamp post, and the front end of the water circulation cooling device is connected with the rear end of the lamp holder and used for absorbing heat generated by the lamp holder.
2. The apparatus of claim 1, wherein the water circulation cooling device comprises a water circulation jacket and a water circulation jacket;
the water circulation jacket is arranged in the inner shaft hole of the lamp post, the water circulation jacket is provided with an inner shaft hole, and the front end of the water circulation jacket is matched with the rear end of the lamp holder;
the water circulation inner sleeve is arranged in the inner shaft hole of the water circulation outer sleeve, the front end of the water circulation inner sleeve is spaced from the lamp holder in a preset mode, and the rear end of the water circulation inner sleeve is connected with a cooling water inlet pipe.
3. The device of claim 2, wherein the lamp head comprises an LED lamp bead, an aluminum substrate, and a heat sink; the LED lamp beads are arranged on one side of the aluminum substrate, the radiating fins are arranged on one side of the aluminum substrate opposite to the LED lamp beads, and the radiating fins are provided with cavities for accommodating the front ends of the water circulation inner sleeves.
4. The apparatus as claimed in claim 3, wherein the axial hole of the rear end of the water circulation inner housing is larger than the axial hole of the front end of the water circulation inner housing, and the front end of the water circulation inner housing is provided with a nozzle such that the cooling water is sprayed toward the heat sink through the nozzle.
5. The device as claimed in claim 3, wherein the front end of the water circulation inner sleeve is provided with a guide positioning surface engaged with the heat sink.
6. The device of claim 3, wherein the outer wall of the water circulation jacket is provided with a wire groove along the axial direction for accommodating a power wire of the LED lamp bead.
7. The device of claim 1, wherein the engine in-cylinder illumination device further comprises a sleeve body, wherein the sleeve body is detachably connected with an engine cylinder cover; the sleeve barrel is provided with an inner shaft hole, and the lamp post is arranged in the inner shaft hole of the sleeve barrel.
8. The apparatus of claim 1, wherein the optical window is a hemispherical optical window, a planar optical window, or a beveled optical window.
9. The apparatus of claim 1, wherein the engine in-cylinder lighting apparatus further comprises a lamp post press cap, a rear end of the lamp post is provided with a flange surface, and the lamp post press cap fixes the lamp post in the sleeve body through the flange surface of the lamp post.
10. The device of claim 2, wherein the lighting device in the engine cylinder further comprises a water circulation jacket pressing cap, a flange surface is arranged at the rear end of the water circulation jacket, and the water circulation jacket pressing cap fixes the water circulation jacket in the lamp post through the flange surface of the water circulation jacket.
11. The device of claim 2, wherein an inner wall of the sleeve body is a clearance fit with an outer wall of the light pole.
12. The device as claimed in claim 3, wherein the side wall of the rear end of the water circulation jacket is provided with a drainage hole for connecting with a drainage joint.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911398325.9A CN113063110A (en) | 2019-12-30 | 2019-12-30 | Lighting device in engine cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911398325.9A CN113063110A (en) | 2019-12-30 | 2019-12-30 | Lighting device in engine cylinder |
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| CN113063110A true CN113063110A (en) | 2021-07-02 |
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| CN201911398325.9A Pending CN113063110A (en) | 2019-12-30 | 2019-12-30 | Lighting device in engine cylinder |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274717Y (en) * | 1996-01-25 | 1998-02-18 | 陈春生 | Lamp |
| CN104197296A (en) * | 2014-09-19 | 2014-12-10 | 苏州承源光电科技有限公司 | Radiating device of radiator of LED street lamp |
| EP3051092A1 (en) * | 2015-01-29 | 2016-08-03 | Caterpillar Energy Solutions GmbH | Cooling of pre-chamber in internal combustion engine |
| CN205514494U (en) * | 2016-01-20 | 2016-08-31 | 杨后民 | Novel integral type water -cooling endoscope |
| CN106089479A (en) * | 2016-06-12 | 2016-11-09 | 哈尔滨工程大学 | A kind of lengthened piston mechanism visualizing optical engine device |
| CN106287278A (en) * | 2015-08-28 | 2017-01-04 | 中山市四维家居照明有限公司 | A kind of LED bulb of luminaire |
| CN106369333A (en) * | 2015-08-28 | 2017-02-01 | 胡冰心 | Illuminating lamp capable of being circularly cooled with self-cleaned light-emitting surface |
| CN106382507A (en) * | 2015-08-28 | 2017-02-08 | 中山诺顿科研技术服务有限公司 | Lamp capable of being cooled circularly and adjustable in light emitting angle |
| CN207635061U (en) * | 2017-12-28 | 2018-07-20 | 深圳市瑞泊科技有限公司 | A kind of LED flashlight |
| CN108506768A (en) * | 2018-04-24 | 2018-09-07 | 常青 | A kind of light compensating lamp |
-
2019
- 2019-12-30 CN CN201911398325.9A patent/CN113063110A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274717Y (en) * | 1996-01-25 | 1998-02-18 | 陈春生 | Lamp |
| CN104197296A (en) * | 2014-09-19 | 2014-12-10 | 苏州承源光电科技有限公司 | Radiating device of radiator of LED street lamp |
| EP3051092A1 (en) * | 2015-01-29 | 2016-08-03 | Caterpillar Energy Solutions GmbH | Cooling of pre-chamber in internal combustion engine |
| CN106287278A (en) * | 2015-08-28 | 2017-01-04 | 中山市四维家居照明有限公司 | A kind of LED bulb of luminaire |
| CN106369333A (en) * | 2015-08-28 | 2017-02-01 | 胡冰心 | Illuminating lamp capable of being circularly cooled with self-cleaned light-emitting surface |
| CN106382507A (en) * | 2015-08-28 | 2017-02-08 | 中山诺顿科研技术服务有限公司 | Lamp capable of being cooled circularly and adjustable in light emitting angle |
| CN205514494U (en) * | 2016-01-20 | 2016-08-31 | 杨后民 | Novel integral type water -cooling endoscope |
| CN106089479A (en) * | 2016-06-12 | 2016-11-09 | 哈尔滨工程大学 | A kind of lengthened piston mechanism visualizing optical engine device |
| CN207635061U (en) * | 2017-12-28 | 2018-07-20 | 深圳市瑞泊科技有限公司 | A kind of LED flashlight |
| CN108506768A (en) * | 2018-04-24 | 2018-09-07 | 常青 | A kind of light compensating lamp |
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