WO2010075613A1

WO2010075613A1 - Method and device for without failure operation of the solid fuel boilers

Info

Publication number: WO2010075613A1
Application number: PCT/BG2009/000020
Authority: WO
Inventors: Nikola Petrov Nikolov
Original assignee: Nikola Petrov Nikolov
Priority date: 2008-12-29
Filing date: 2009-12-17
Publication date: 2010-07-08
Also published as: EA201101023A1; BG110815A; EP2370750A1

Abstract

The invention relates to solid fuel boilers, which are used in households for heating apartments, houses, villas and other buildings. For some types of the solid fuel boilers the solid fuel affect the normal operation of the temperature regulator. In Europe, the prevalence obtained solid fuel boilers in the series CF 120 CSE company DE DIETRICH THERMIQUE SAS 57 rue de Ia gare-F-67, 580 MERTZWILLER. Loading of the boiler (with the door closed for ash) and the combustion of solid fuel particles fall into a regulatory body temperature regulator to prevent its movement towards reducing air flow. As a result, the water temperature in the boiler rises above set and if the operator does not intervene the water begins to evaporate, the pressure in the boiler to rise and trigger safety valve. The system goes into relay mode. This mode is for emergency boiler. As a result of iron are made of sections of the boiler is subjected to cyclical temperature effects amlituda high and in some sections could be cracks appear. In addition it reduces the efficiency of the boiler and unpleasant noise appears in the form of hissing. To solve this problem, propose a method and device which prevent solid particles to fall under the primary air flap of the regulator.

Description

METHOD AND DEVICE FOR WITHOUT FAILURE OPERATION OF THE SOLID FUEL BOILERS

DESCRIPTION

The invention concerns Method and device for without failure operation of the solid fuel boilers. These are boilers widespread in conditions of life for heating of apartments, houses, villas and another object which need heating and use solid fuel. In some kinds of boilers the solid fuel influences on the temperature regulator's normal operating of the solid fuel boilers. In Europe widespread are the solid fuel boilers type CF 120 CSE company DE DIETRICH THERMIQUE SAS 57 rue de Ia gare-F-67, 580 MERTZWILLER.

While refueling with solid fuel (with closed ash door 1, Figure 1- View of the boiler's front side) and in the burning's process through the guard with hinge 2 (Figure 2 - View of the boiler's front side with open ash door 1) fall solid fractions from the fuel on the under window's plate 3 (Figure 3 - Back's view 4 of the ash door 1).

Falling on the under windows plate 3 they reflected and disseminated except on the under window's plate 3, but and on the horizontal part of the primary air flap's 8 frame 7 (Figure 4- aksonometric view of the ash door's 1 front side). Some of them get into under the primary air flap 8 (temperature regulator's regulating aid) on the frame's 7 front part and obstruct the remove its in direction to decrease of the orifice (between the air flap and the frame). If this orifice is larger than necessary for maintenance of the requisite temperature in steady state, boiler's flow water temperature begins to increase more than the requisite and if it pass over 100° C the water evaporates. The pressure in the boiler increases and if operator don't interfere with the safety valve (it hasn't been showing on the figures) opens. All the system (in conjunction with the safety valve) pass over in relay mode. After the safety valve was at work the pressure decreases, the cold water tops up the boiler , the temperature begins to decrease, the water's evaporation ceases, the safety valve stops and the water's temperature begins to increase again and so on. The relay mode extends while the solid fuel decreased as much as for this orifice between the air flap and the frame became continual mode in system at temperature higher than the requisite but lower than 100° C.

After that the water's temperature begins to decrease (along with the fuel's decrease), becomes equal for a while to requisite temperature and decreases again but at continual mode. The relay mode is a failure for the boiler and requires the interference of the operator. Therefore users of such boilers can't leave them unattended for a long time.This is necessitated by the fact that activation of the emergency safety valve and the pass of the system on the relay mode is not safe for the boiler. Supplementing it with cold water at high temperature is allowed only a few times in the season, according to his instructions, because cast iron, which are made from sections of the boiler is subjected to cyclical temperature effects with a large amplitude, which can cause cracks in some . Moreover, the entry system in relay mode is accompanied by the release of steam with high temperature and an additional heating of the water after the closure of the exhaust valve, which reduces the efficiency of the boiler. And last but not least, when the system enters in the relay mode and steam is released, it was accompanied with an unpleasant noise as a hissing, and sometimes with vibrations of parts of its fixtures. The impact of the solid fuel on the work of the regulator of temperature examined type boilers (CF 120 CSE) creates a serious problem in its operation, resulting in the likelihood system with safety valve of the continuous normal mode to pass in the relay mode primary air due to obstructing the main air flap to move towards reducing its mouth to its frame solids from the fuel caught on the front of the frame.

If the occurrence of the restriction of movement of the air flap to its frame, the water's temperature in the boiler increases, but reaches the critical value (100⁰C), in which water evaporates, the influence of the solid fuel on the work of the regulator is expressed only increase in water temperature more than the requisite, without crossing the system in relay mode.

The influence of the solid fuel on the normal operation of the temperature regulator can be eliminate by remove of the reflected solid fractions get in the space between the primary air flap (8) and the frame's 7 horizontal front part to under window's plate 3. This is effected by the proposed device. It consists of a metal plate 9 (Figure 5a - front view of the metal plate) which is attached to the back side 4 of the door 1 through the ashes of two lateral screws 5, which connect the frame 7 of the main air flap 8 to the front of the ash door 1. Bottom of plate 10 (Figure 5c - axonometric view of the metal plate), touch tightly under window's plate 3 and is perpendicular to it. 11 of the upper plate is bent at an angle α to the plane of the lower part 10 (Figure 5b - side view of the metal plate) and is located in the space below the air flap 8 and the horizontal part of its frame 7. Figure 6 shows a longitudinal section of the door for ash 1 and shows a metal plate attached to the back door.

After implementation of this method using the proposed device, avoiding the passage of the system in relay mode, because air regulating body temperature regulator can move freely, while the opening between the flap and its frame can acquire value as the reference temperature, and disruptive effects of the law regulating the regulator.

With this increased efficiency in the operation of the boiler and allowing requirements to fuel parameters (size and shape) and also the requirements in section 4.1 of the instructions for the pot to be less stringent.

In addition, if the water pump is powered from the network and using UPS, no further need for continuing oversight of the operation of the boiler.

Claims

PATENT CLAIMS

1. Method and device for without failure operating of the solid fuel boilers at which the falling solid fractions from the fuel through the guard with hinge (2), at refueling and in the burning, on the under window's plate (3), at the back (4) of the ash door (1) and reflecting on its, some of them get into under the primary air flap (8), charactering with a remove of the reflected solid fractions, get in the space between the primary air flap (8) and the frame's (7) horizontal part to under window's plate (3).

2. Device for realization of the method according to a claim 1, charactering with, that a metallic plate (9) fixed to the ash door's (1) back (4), by means of the two bolts (5), braced the frame (7) of the air flap (8) to the ash door (1), that the below part (10) of the plate (9) touches tightly the under window's plate (3) and is perpendicular to its, but the above part (11) of the plate (9) in width equal at the width of the window (6), which is bent at angle α, in relation to the below part's (10) the plain is settled in the space under the air flap (8) and horizontal part of the its frame (7).