GB2560495A

GB2560495A - Improvements in blow-off vents

Info

Publication number: GB2560495A
Application number: GB1702766.5A
Authority: GB
Inventors: Marshall Galley Phillip
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-02-21
Filing date: 2017-02-21
Publication date: 2018-09-19
Also published as: GB201702766D0

Abstract

A blow-off deflector for redirecting water 6 or steam from a boiler 3 onto an external wall 5 has a hollowed end cap 1 welded 8 or heat attached to a short pipe 2. The cap and pipe are spaced apart from each other to define a water flow space and water exit opening 7. In use, water and steam ideally flows from the boiler along the flow space and is redirected by the end cap to the exit opening and subsequently onto the external wall of a building, thus preventing the water or steam from falling onto persons below.

Description

(54) Title of the Invention: Improvements in blow-off vents Abstract Title: Boiler blow-off deflector cap (57) A blow-off deflector for redirecting water 6 or steam from a boiler 3 onto an external wall 5 has a hollowed end cap 1 welded 8 or heat attached to a short pipe 2. The cap and pipe are spaced apart from each other to define a water flow space and water exit opening 7. In use, water and steam ideally flows from the boiler along the flow space and is redirected by the end cap to the exit opening and subsequently onto the external wall of a building, thus preventing the water or steam from falling onto persons below.

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FIGURE 1

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FIGURE 2

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FIGURE 3

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FIGURE 5

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FIGURE 6

PATENT APPLICATION

OF

PHILIP MARSHALL GALLEY

FOR

IMPROVEMENTS IN BLOW-OFF VENTS

Field of the Invention

The present invention relates to blow-off vents for heating and other similar systems. For use in domestic and commercial heating systems but may also be applied to venting fluids as a gas or liquid.

Background

Boiler blowdown is water intentionally and directionally wasted from a boiler to avoid concentration of impurities during continuing evaporation of steam. The water is blown out of the boiler with some force by steam pressure within the boiler. Bottom blowdown used with early boilers caused abrupt downward adjustment of boiler water level and was customarily expelled downward to avoid the safety hazard of showering hot water on nearby individuals. A method of addressing this issue is to provide a blow-off vent for central heating systems to enable the hot air and steam to escape through an external wall of a house or building. This comes in the form more often of a vent which is in the form of a simple pipe with two 90° bends at the end so that the open end of the pipe is directed backward towards the wall. This is to prevent hot air and steam from being ejected outwards away from the wail which might otherwise create a hazard, for example to people walking past. It can be a problem with such known vents that, because they are made from two right angle bends as well as the main pipe, the time taken and hence the cost, to install them can be significant, they also are not particularly attractive aesthetically. Attempts have been made to provide a solution to this by providing a fitting to the termination and opening of the exterior pipe as disclosed in patent ref: GB2396204A wherein a vent system for a heating or similar system comprises a vent pipe extending substantially horizontally through an external wall of a building and terminating at an end, and having at least one aperture therein, which may be at or towards the end, and a cowl extending around the end of the pipe and optionally at least partly around at least one aperture and being open towards the wall so that fluid escaping along the pipe and through the one aperture will impinge upon the cowl and thereby be deflected at least partially back towards the walk

This design however still enables water and steam to drip or exit in a collective manner away from the walls exterior surface in a sufficient manner to be of possible hazard to people walking below it. This is due to the end cowl being of a fiat vertical planar nature in form, allowing the freed water or liquid steam io still fall from its exit points.

The present invention aims to provide an end fitting which is attached to the exterior exit pipe and re-directs the exiting water or steam flow much closer toward the wail exterior and forces the exiting water and steam directly onto the wall exterior of brickwork to filter onto the surface and dissipate thus.

Summary of the invention

According to the present invention there is provided a fitting which is attached to the pipe which extends externally through a building wall. The pipe is provided to enable unwanted water and steam to exit from a heating boiler to which it is attached.

The water expels from the pipe opening externally and would normally be able to fail freely downward, this creates a hazard to anyone below it or nearby. If the pipe is required to be exited through the wall at height, this hazard of dripping hot wafer can be increased. Therefore, the present invention is an end fitting which Is attached using known plumbing methods, to join the end fitting to the protruding infernal pipe end.

The end fitting and invention herein is a short section of cylindric copper or variant pipe which is of suitable size and diameter to engage and fit with an air tight seal to the protruding internal pipe. To the end of this short section of pipe is a larger hollow cap end section.

The larger cap end section seats onto the upper rounded surface of the short section of pipe and is welded or heat attached to it on this upper edge, as shown In the Figures.

The shorter pipe has an opening into which the water or steam liquid enters from the boiler pipe and an exit opening of equal diameter which seats closely but not fully onto the interior end surface of the larger cap section, creating a through flow space due to the two sections not fully connecting at the end inside the larger cap section.

The water and steam liquid passes into the shorter pipe and thus directly flows into the concave hollow interior of the cap end and exits through, around and out of the opening provided by the smaller diameter and position of the shorter pipe section thereto.

The end cap is hollow and can be advantageously seated closely to the exterior wall surface and as if is converse to the wail, the water flows from the opening and fully onto the wall surface, displacing it. This re-directing of the water and steam onto the wail surface is encouraged by positioning the end cap and its opening, closer to the wall surface.

The water and steam are therefore, redirected and displaced onto the wail surface and the water and steam does not drip or fall onto persons below therefore.

Preferred embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings in which:

These prior art examples do provide a version of the blow-off vent and would be able to support the theory and action of preventing the water or steam from dripping onto a person below but their design enables still some water and steam to fall as a possible hazard.

According to the present invention the design disclosed herein detracts from the conventional concepts and designs of the prior art, and so provides an apparatus primarily developed for the purpose of providing a blow-off vent which prevents water and steam still dripping onto persons below and reducing the hazard.

In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.

As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.

Further, the purpose of the foregoing abstract is to enable the Patent Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.

It is therefore an object of the present invention to provide a new and improved blow-off vent which has ail the advantages of the prior art blow-off vent devices and none of the disadvantages.

Brief description of figures

Figures 1 show a perspective view of the blow-off valve and end cap fitted into a wall.

Figures 2 show a dimensional view of the blow-off valve end cap.

Figures 3 show a front view of the openings of the blow-off valve and end cap.

Figures 4 show a side view of the blow-off valve end can and its position to a wall.

Figures 5 show a side view of the blow-off valve end can and a closer position to a wall.

Figures 6 show a plan view of the blow-off valve and the two sections combined.

Detailed description of figures

A typical embodiment of the improved blow-off valve is shown in Figure 1 and is an end cap 1 which is a water or steam liquid redirection head, partly inserted into this is a short pipe body 2 which is affixed via a pipe connection weld 8 which holds them together. The pipe body 2 is hollow and located and joined to an outlet pipe to the boiler 3, as shown.

The outlet pipe 3 passes into a boiler pipe outlet hole 4 and lead back to a boiler inside the building.

Water flow 6 passes outwardly through the outlet pipe from the boiler 3 as the boiler expels excess water and steam, this therefore flows into the combination of the short pipe body 2 and end cap 1 and is redirected through the water exit opening 7 and onto the external wall surface 5, as shown in Figure 1.

The Figure 2 shows a dimensional example of the end cap 1A and the inserted short pipe body 2, which have a wall thickness 9 and 12, as shown. Water enters the short pipe body 2A via the opening 13 and passes therein to the end cap 1A interior via the short pipe body internal opening 10.

The water then passes into the space 14 between the short pipe internal opening 10 and the end cap face 11, the water then exits through the water exit opening 7A thereto.

Figure 3 shows the sections as an end view wherein the wall thickness of both parts 9B and 12B have an inlet 13B and an outlet 7B for water or steam liquids.

The outlet pipe to the boiler 3C is inserted through the wall 5C and the end cap 1C is located near to the walls 5C, a shown in Figure 4.

The end cap 1D may be of variant shape and be located more closely to the surface of the wall 5D, as shown in Figure 5.

Figure 6 shows the two sections 1E and 2E together as a plan view.

Claims

1) An improved blow-off valve end cap for redirecting water or steam liquid onto a wall surface, constituted by:

A cap end, a short pipe body, a connecting weld, water flow space and water exit opening.

2) An improved blow-off valve end cap for redirecting water or steam liquid as set forth in claim 1 wherein, an end cap is hollowed and is attached to an almost fully inserted short body pipe, which is through hollowed with openings at each end.

3) An improved blow-off valve end cap for redirecting water or steam liquid as set forth in claim 1 and claimed in claim 2 wherein, an end cap is a closed end to a short body pipe which it is spaced there from and is attached to said end cap using a weld.

4) An improved blow-off valve end cap for redirecting water or steam liquid as set forth in claim 1 and claimed in claim 2 wherein, two hollowed sections are connected, being a short pipe inserted almost fully into a closed end cap and a space is provided between them to allow water or steam liquid to flow within, which is then re-directed via the end cap to an outlet point due to the said ensemble and space provided between them.

5) An improved blow-off valve end cap for redirecting water or steam liquid as set forth in claim 1 and claimed in claim 4 wherein, the water and steam liquid is re-directed in the opposite direction of which it entered by the end cap interior due to its shape and exit point.

6) An improved blow-off value end cap for redirecting water or steam liquid as set forth in claim 1 and claimed in claim 5 wherein, water and steam liquid exits onto the exterior wall of a building and is therefore dispersed safely and prevented from falling onto persons below it.

Intellectual

Property

Office

Application No: GB1702766.5 Examiner: Mr Will Jeffries