# US 10,307,771 B2 · Lance nozzle and excess sprayed coating removal device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,307,771 B2 - Document ID: US10307771B2 - Status: Granted - Kind: B2 - Application number: 15/180,490 - Filed: 2016-06-13 - Published: 2017-07-27 - Granted: 2019-06-04 - Earliest claimed: 2016-01-27 - Assignees: Sugino Machine Limited - Applicants: Sugino Machine Limited - Inventors: Shunji Otani; Hajime Sakurai; Masaaki Sugimura - Web page: https://patentgrep.com/patent/US10307771B2 ## CPC - B05B 1/10: in the form of a fine jet, e.g. for use in wind-screen washers - B05B 1/20: Perforated pipes or troughs, e.g. spray booms; Outlet elements therefor - B05B 1/28: with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material - B05B 3/027: {with radial fluid passages} - B05B 12/32: Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed (nozzles with integral shielding elements B05B1/28) - B05B 13/0636: {by means of rotatable spray heads or nozzles} - B08B 3/02: Cleaning by the force of jets or sprays - B08B 9/00: Cleaning hollow articles by methods or apparatus specially adapted thereto - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) - B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL ## Abstract A lance nozzle injecting fluid includes a shaft body, a first nozzle hole, and a second nozzle hole. The shaft body internally includes a flow path of the fluid. The first nozzle hole is disposed on a leading end side of the shaft body, and generates a first jet in a first injecting direction inclining to a base end side of the shaft body with respect to a direction perpendicular to an axial direction of the shaft body. The second nozzle hole is disposed on a base end side of the first nozzle hole in the shaft body, and generates a second jet in a second injecting direction inclining to a leading end side of the shaft body with respect to a direction perpendicular to an axial direction of the shaft body. ## Claims ### Claim 1 An apparatus comprising: a multi-cylinder engine including a cylinder block with a plurality of cylinder bores and a crank chamber, the crank chamber being separated by a partition wall with a communication hole to form a plurality of small chambers; and a lance nozzle that injects fluid, the lance nozzle comprising: a shaft body internally including a flow path of the fluid; a first nozzle hole disposed on a leading end side of the shaft body, the first nozzle hole configured to generate a first jet in a first injecting direction, the first injecting direction being a direction inclining to a base end side of the shaft body with respect to a direction perpendicular to an axial direction of the shaft body; and a second nozzle hole disposed on a base end side of the first nozzle hole in the shaft body, the second nozzle hole configured to generate a second jet in a second injecting direction, the second injecting direction being a direction inclining to a leading end side of the shaft body with respect to a direction perpendicular to an axial direction of the shaft body, wherein: the lance nozzle is configured to remove excess sprayed coating on the crank chamber of the cylinder block of the multi-chamber engine, the first nozzle hole has an inclination angle θ1 formed by the first injection direction and the axial direction of the shaft body satisfying a following formula 1, and the second nozzle hole has an inclination angle θ2 formed by the second injection direction and the axial direction of the shaft body satisfying a following formula 2: tan - 1 ⁡ ( T 2 ⁢ D ) ≤ θ 1 < 90 ⁢ ° [ Formula ⁢ ⁢ 1 ] 0 < θ 2 ≤ tan - 1 ⁡ ( T D ) [ Formula ⁢ ⁢ 2 ] where D: representative length of the communication hole; and T: representative thickness of the partition wall. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein a distance L between the first nozzle hole and the second nozzle hole in the axial direction of the shaft body satisfies a following formula BP 2 ⁢ tanθ 1 + BD 2 ⁢ tanθ 2 - H ≤ L ≤ BD 2 ⁢ tanθ 1 + BP - T 2 ⁢ tanθ 2 + H - D [ Formula ⁢ ⁢ 3 ] where BP: distance of pitch between the cylinder bores; BD: diameter of the cylinder bore; θ1: angle formed by the first injection direction and the rotational axis of the shaft body; θ2: angle formed by the second injection direction and the rotational axis of the shaft body; T: representative thickness of the partition wall; H: height from an upper end of the cylinder bore to an upper-side inner surface of the communication hole disposed on the partition wall in a case where the cylinder block is inverted; and D: representative length of the communication hole. ### Claim 3 An apparatus comprising: a multi-cylinder engine including a cylinder block with a plurality of cylinder bores and a crank chamber, the crank chamber being separated by a partition wall with a communication hole to form a plurality of small chambers; a moving device; a spindle casing; a lance nozzle that injects fluid, the lance nozzle comprising: a shaft body internally including a flow path of the fluid; a first nozzle hole disposed on a leading end side of the shaft body, the first nozzle hole configured to generate a first jet in a first injecting direction, the first injecting direction being a direction inclining to a base end side of the shaft body with respect to a direction perpendicular to an axial direction of the shaft body; and a second nozzle hole disposed on a base end side of the first nozzle hole in the shaft body, the second nozzle hole configured to generate a second jet in a second injecting direction, the second injecting direction being a direction inclining to a leading end side of the shaft body with respect to a direction perpendicular to an axial direction of the shaft body, wherein: the lance nozzle is configured to remove excess sprayed coating on the crank chamber of the cylinder block of the multi-chamber engine, the first nozzle hole has an inclination angle θ1 formed by the first injection direction and the axial direction of the shaft body satisfying a following formula 1, the second nozzle hole has an inclination angle θ2 formed by the second injection direction and the axial direction of the shaft body satisfying a following formula 2: tan - 1 ⁡ ( T 2 ⁢ D ) ≤ θ 1 < 90 ⁢ ° [ Formula ⁢ ⁢ 1 ] 0 < θ 2 ≤ tan - 1 ⁡ ( T D ) [ Formula ⁢ ⁢ 2 ] where D: representative length of the communication hole; and T: representative thickness of the partition wall, the lance nozzle is arranged on the spindle casing, the lance nozzle configured to insert into the small chamber, such that the lance nozzle is inserted into the small chamber in a direction along an axial direction of the cylinder bore, and a shield having a block portion configured to intercept the first jet and the second jet, the shield configured to insert into the small chamber so as to face another cylinder bore different from one cylinder bore among the pair of the cylinder bores communicating with the small chamber, the shield configured to protect a sprayed coating on an inner surface of the other cylinder bore from the first jet and the second jet when the lance nozzle is inserted into the small chamber.