GB2443156A - Heated windscreen washer nozzle - Google Patents
Heated windscreen washer nozzle Download PDFInfo
- Publication number
- GB2443156A GB2443156A GB0621323A GB0621323A GB2443156A GB 2443156 A GB2443156 A GB 2443156A GB 0621323 A GB0621323 A GB 0621323A GB 0621323 A GB0621323 A GB 0621323A GB 2443156 A GB2443156 A GB 2443156A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nozzle
- windscreen washer
- washer nozzle
- heated windscreen
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 2
- 239000003570 air Substances 0.000 claims 7
- 239000012080 ambient air Substances 0.000 claims 1
- 230000008014 freezing Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 claims 1
- 238000009428 plumbing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001473 noxious effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/487—Liquid supply therefor the liquid being heated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/52—Arrangement of nozzles; Liquid spreading means
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
A heated windscreen washer nozzle consists of a nozzle housing 2 with serrations 6 thus maximising the lower surface area of the nozzle as a heat sink which when inserted into a vehicle bonnet 4 utilises warm air from the power plant. Warm air which rises from the power plant is contained by baffles 5 on the underside of the bonnet creating a thermal reservoir. The warm air is passed through the bonnet via vents 3 and subsequently channelled around the nozzle upper surface and contained by an insulated shroud 1 to an exit aperture 7. This process both removes existing ice and prevents further ice formation.
Description
ANTI-ICE/DEICE HEATED WINDSCREEN WASHER NOZZLE.
Applicant; Anthony Osmond Mills 29 Coiswold road, Windmill Hill Bednainster, Bristol 053 4NX REF; A0M200611 PREAMBLE.
The heated windscreen washer nozzle, as shown in figures 1,2 and 3 is a device the purpose of which is to prevent ice accretion on the washer nozzle and jet aperture in icing conditions thus maintaining correct flow of washer fluid through the nozzle and onto the windscreen in low ambient temperature conditions. Two definite processes achieve ice build up on a conventional windscreen washer nozzle; 1) By static air (ambient) temperature drops in the presence of moisture, usually during the winter months or at higher altitudes or both.
2) By ram airflow over the nozzle causing a chill effect, which enables water vapour to accrete usually in the form of rime ice.
Either one or a combination of!) and 2) will cause ice to accumulate on the washer nozzles. This has been a significant problem for users of vehicles in which this type of system is employed.
Several methods of combating this particular problem have been devised; These employ either thermoelectric (heating elements) or thermal transfer via a heating jacket which is supplied by fluid from the engine cooling system or the cabin heater niatriL Both of these methods are effective however they have drawbacks in that they require additional equipment and rely on continuity of electrical power or heating fluid.
The invention described below both removes and prevents ice build up on windscreen washer nozzles by utilising warmed air from the vehicle power plant which is usually, but not exclusively, an internal combustion engine. This air is then channelled around the nozzle and aperture; this in combination with the heat soak of the nozzle (2) is used to maintain the local temperature of the device suitable for efficient functioning.
DESCRIPTION.
1. The anti ice/de ice heated windscreen washer assembly, consists of nozzle housing (2), which is mounted in an aperture on the vehicle bonnet (4). The housing is essentially the same as a standard nozzle housing however it differs In that the underside (6) is designed in such a way as to maximize surface area and thereby heat transfer from the warm air rising from the power plant, or other warm air source. That is to say that the underside of the housing acts as a heat sink. The housing and associated components should ideally be manufactured from a material that is both cost effective and has good thermal conductivity.
2. The nozzle housing is screened from low ambient and low ram air temperature conditions by an insulating shroud (1), this shroud is constructed from a material with good thermal insulation properties and durability and is also designed to maintain a sufficient air gap around the nozzle housing through which warm dc-icing/anti icing air may flow.
3. Heated air from the vebide power plant or other device is allowed to flow between the nozzle housing and insulating shroud via vents in the vehicle bonnet (3). This circulates around the nozzle itself (7) thus preventing ice formation by maintaining airflow around the nozzle aperture.
4. Heated air produced by the vehicle power plant rises to the underside of the vehicle bonnet and is contained by baffles (5) mounted on the underside of the bonnet, this has the effect of producing a thermal air reservoir' which maxinuses the heating/dc-icing effect in the vicinity of the device.
5. Washer fluid conveyance is achieved through a conventional fluid reservoir, pump and flexible piping transfer mechanism (net shown) the locating and routing of which is designed to maximise beat transfer to the fluid using available heat sources and a combination of convection, conduction and radiation. The fluid then passes under pressure to the nozzle itself through a connecting pipe (8) and is sprayed onto the user surface through the
adjustable jet (7).
6. The nozzle shroud aperture is sealed sufficiently so as to prevent escape of noxious gases over the bonnet, which may enter the fresh air vents in the event of an exhaust manifold failure, or other mechanical problems likely to cause escape of noxious fumes.
7. The shroud aperture seal also prevents the ingress of foreign objects and contamination during normal operations. * ]
Claims (11)
1. The heated windscreen washer nozzle is primarily designed to be utilised by, bit is not limited to, motorised vehicles or windscreeas.
2. The heated windscreen washer nozzle is designed to be mounted on top of or recessed In the vehicle bonnet but not mounted behind 11i rear bonnet lip In theair ventgriH area.
3. The heated windscreen washer nozzle assembly utillees warmed air, provided by the ehld. power plant and or other devices to maintain Its temperature above freezing.
4. The heated windscreen washer nozzle has a housing the underside of which is constructed in such a as to mazisnis as far as possible the beat transfer from the warmed air to the nozzle Lousing and aaaothled plumbing.
S. The heated windscreen washer nozzle housing Is constructed of a material that has good thermal conductivity.
6, The heated windscreen washer nozzle assembly has a shroud constructed of a material with good thermal Insulation prope.lles, the purpose of which is to screen he nozzle houalng from ram airflow over the nozzle and low ambient air temperature.
7. Theshrondbofchdsiousastocroateaoavityomjtand nozzle housing through which warmed air may puss whilst maintaining minimal airflow disruption over Itself.
8. The heated windscreen washer nozzle HIL,es warm air yenta In the vehicle bonnet, through which air passes tat, a cavity between the nozzle housing and the nozzle shroud outing around the nozzle aperture.
9. The heated windscreen washer nozzle housing contains a washer fluid conveying and directing aehima which is constructed of materials which have good thermal conductivity to m.iis heat ezchauge from the warm air sources.
10. The boated windscreen washer nozzle assembly 1talns drainage of the air cavity by allowing excess fluid to drain through Its own vent holes.
11. The boated windscreen washer nozzle does not utilise heat transfar through thermoelectric or thermal fluid convection/conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0621323A GB2443156A (en) | 2006-10-26 | 2006-10-26 | Heated windscreen washer nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0621323A GB2443156A (en) | 2006-10-26 | 2006-10-26 | Heated windscreen washer nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0621323D0 GB0621323D0 (en) | 2006-12-06 |
| GB2443156A true GB2443156A (en) | 2008-04-30 |
Family
ID=37546027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0621323A Withdrawn GB2443156A (en) | 2006-10-26 | 2006-10-26 | Heated windscreen washer nozzle |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2443156A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2411031A1 (en) * | 1974-03-08 | 1975-09-11 | Klaus Dipl Ing Wiemer | Protection for windscreen washer jets - uses insulated cowl over jets to protect against freezing by wind stream |
| DE3409051A1 (en) * | 1984-03-13 | 1985-09-19 | SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen | Motor vehicle with an internal combustion engine and a window cleaning system |
| DE3507900A1 (en) * | 1985-03-06 | 1986-09-11 | Audi AG, 8070 Ingolstadt | Motor vehicle with a windscreen washing system |
| FR2585311A1 (en) * | 1985-07-24 | 1987-01-30 | Swf Auto Electric Gmbh | Windscreen cleaner arrangement for vehicles |
| DE4429754A1 (en) * | 1994-08-23 | 1996-02-29 | Vdo Schindling | Water tank for windscreen washing installation |
| DE10334932A1 (en) * | 2003-07-31 | 2005-02-24 | Audi Ag | Motor vehicle cleaning device, especially a heated windscreen wash assembly, has a wash delivery line that is routed so that it passes adjacent to a heater for another vehicle component, e.g. the heater for the vehicle interior |
-
2006
- 2006-10-26 GB GB0621323A patent/GB2443156A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2411031A1 (en) * | 1974-03-08 | 1975-09-11 | Klaus Dipl Ing Wiemer | Protection for windscreen washer jets - uses insulated cowl over jets to protect against freezing by wind stream |
| DE3409051A1 (en) * | 1984-03-13 | 1985-09-19 | SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen | Motor vehicle with an internal combustion engine and a window cleaning system |
| DE3507900A1 (en) * | 1985-03-06 | 1986-09-11 | Audi AG, 8070 Ingolstadt | Motor vehicle with a windscreen washing system |
| FR2585311A1 (en) * | 1985-07-24 | 1987-01-30 | Swf Auto Electric Gmbh | Windscreen cleaner arrangement for vehicles |
| DE4429754A1 (en) * | 1994-08-23 | 1996-02-29 | Vdo Schindling | Water tank for windscreen washing installation |
| DE10334932A1 (en) * | 2003-07-31 | 2005-02-24 | Audi Ag | Motor vehicle cleaning device, especially a heated windscreen wash assembly, has a wash delivery line that is routed so that it passes adjacent to a heater for another vehicle component, e.g. the heater for the vehicle interior |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0621323D0 (en) | 2006-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |