# US 11,306,610 B2 · Turbine housing and washing method of turbine housing

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- Number: US 11,306,610 B2
- Document ID: US11306610B2
- Status: Granted
- Kind: B2
- Application number: 16/955,535
- Filed: 2018-11-15
- Published: 2021-01-14
- Granted: 2022-04-19
- Earliest claimed: 2017-12-22
- Assignees: Marelli Corporation
- Applicants: Marelli Corporation
- Inventors: Hiroyuki Okamoto
- Web page: https://patentgrep.com/patent/US11306610B2

## CPC

- F01D 25/002: {Cleaning of turbomachines}
- F01D 25/30: Exhaust heads, chambers, or the like
- B08B 9/0321: {using pressurised, pulsating or purging fluid (E04F17/126 takes precedence)}
- F01D 25/24: Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045})
- F01D 25/26: Double casings; Measures against temperature strain in casings
- F02B 39/00: Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B 39/16: Other safety measures for, or other control of, pumps
- F01D 25/32: Collecting of condensation water; Drainage {; Removing solid particles}
- F02C 6/12: Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
- F05D 2220/40: in turbochargers
- F05D 2230/54: by sheet metal manufacturing
- Y02T 10/12: Improving ICE efficiencies
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A turbine housing is provided with an inner pipe forming a spiral-shaped exhaust gas flow path, an exhaust-air-inlet-side flange serving as an exhaust gas inlet to the inner pipe, and an outer pipe that, together with the exhaust-air-inlet-side flange, covers and seals the inner pipe. The outer pipe has an opening through which the washing fluid can pass through and a closing member that closes the opening, and a space through which the washing fluid can pass through is formed between the inner pipe and the exhaust-air-inlet-side flange.

## Claims

### Claim 1

A turbine housing comprising:
an inner pipe forming a spiral-shaped exhaust gas flow path;
an exhaust-air-inlet-side flange forming an exhaust gas inlet to the inner pipe; and
an outer pipe configured to, together with the exhaust-air-inlet-side flange, cover and seal the inner pipe, wherein
the outer pipe has an opening and a closing member for closing the opening, the opening being configured such that the washing fluid can pass through, and
a space is formed between the inner pipe and the exhaust-air-inlet-side flange, the space being configured such that the washing fluid can pass through.

### Claim 2 (depends on 1)

The turbine housing according to claim 1, wherein the opening is positioned directly above an apex of a scroll shape in the spiral-shaped exhaust gas flow path when the turbine housing is placed such that the exhaust-air-inlet-side flange faces downward.

### Claim 3 (depends on 1)

The turbine housing according to claim 1, wherein the opening is positioned directly above the spiral-shaped exhaust gas flow path when the turbine housing is placed such that the exhaust-air-inlet-side flange faces downward.

### Claim 4 (depends on 1)

The turbine housing according to claim 1, wherein the inner pipe includes two sheet-metal-made inner-pipe divided bodies, the sheet-metal-made inner-pipe divided bodies being in a state in which end portions of the sheet-metal-made inner-pipe divided bodies are mutually abutted, and
the opening faces the abutting portion of the inner-pipe divided body.

### Claim 5 (depends on 1)

The turbine housing according to claim 1, wherein the inner pipe is provided slidably with respect to the exhaust-air-inlet-side flange in the space between the inner pipe and the exhaust-air-inlet-side flange.

### Claim 6

A washing method of a turbine housing, the turbine housing being provided with a scroll portion forming a spiral-shaped exhaust gas flow path between an exhaust-air-inlet-side flange forming an exhaust gas inlet and an exhaust-air-outlet-side flange forming the exhaust gas outlet,
the scroll portion being formed of an inner pipe, the inner pipe being at least formed of sheet-metal-made inner-pipe divided bodies divided into a plurality of parts, and
the turbine housing having a double-shell structure with a space between the inner pipe and an outer pipe such that the exhaust gas is discharged via a turbine wheel to an exhaust air outlet side, the inner pipe being covered by the outer pipe formed of sheet-metal-made outer pipe divided bodies divided into a plurality of parts so as to form the space between the inner pipe and the outer pipe, wherein
after the plurality of parts forming the turbine housing are assembled and subjected to processing, the washing fluid is supplied from one of a liquid supply/discharge port provided at a position facing the exhaust gas inlet of the outer pipe or the space provided between a lower end portion of the inner pipe on an exhaust-air-inlet side and the exhaust-air-inlet-side flange, and the washing fluid is allowed to flow out from other of the liquid supply/discharge port or the space together with extraneous matter generated during the processing.