CN2451897Y

CN2451897Y - Condensation water level detector for gas-firing boiler

Info

Publication number: CN2451897Y
Application number: CN00257424U
Authority: CN
Inventors: 崔炳一; 金汉燮
Original assignee: Gyongtong Boiler Co ltd
Current assignee: Kyungdong Navien Co Ltd
Priority date: 1999-11-17
Filing date: 2000-11-02
Publication date: 2001-10-03
Anticipated expiration: 2010-11-02
Also published as: KR200176950Y1

Abstract

The utility model relates to a fuel gas boiler condensed water level detecting device. The utility model is characterized in that the upper end and the lower end of the middle part of a condensed water receiving pipe are provided with water level detecting sensors which keep electrical connection with a main controller. The utility model can detect the residual water level of condensed water in the condensed water receiving pipe having a siphonage, when the utility model can not detect the definite water level of condensed water at the time of boilers trying to run, the utility model automatically stops the running of boilers. The utility model can prevent exhaust gas partly expelled towards atmosphere from passing through the condensed water receiving pipe and entering rooms at the time of high temperature combustion.

Description

The condensate water level checkout gear of gas fired-boiler

The utility model relates to the condensate water level checkout gear of gas fired-boiler, and it can detect waste gas automatically and flow into residual water level in the condensed water receiving tube after over-heat-exchanger carries out the heat exchange condensation.More detailed saying, it is used to detect the water level of condensed water in the condensed water receiving tube that residues in siphonage, in the time can not detecting certain water level of condensed water, stop boiler work automatically, prevent that from structure the part high-temp waste gas is by in the condensed water receiving tube inlet chamber like this.

In general, gas fired-boiler can be divided into wall-hanging and site type by the form of setting; Divide by the warm water method of supplying, the heat exchanger of boiler own is arranged, the mode of warm water is provided and the mode that is provided by water tank when needing is provided in the water tank warm water by heat exchanger; According to the endless form of heating water, can be divided into the atmosphere opening formula that the heating installation circulatory system and the atmospheric exposure formula and the interior heating installation circulatory system of boiler of atmospheric isolation are communicated with atmosphere in the boiler.

Gas fired-boiler is the same with plain cylindrical furnace, in heating installation pipe arrangement and body, fill under the state of water, with gas burner heating, again with circulating pump with hot water from heating installation pipe arrangement and heat supply water pipe toward indoor supply.The heating back is along with hot water temperature's rising, boiler internal air pressure also raises gradually, the hot water that overflows can flow to storage tank by swelling pipeline, when boiler shuts down, after water temperature in body and the heating installation pipe arrangement descends, the heating clamber pressure inside also descends thereupon, owing to exist the water of pressure reduction storage tank to form automatic the backflow and to replenish the loop structure of the not enough water yield by the swelling pipeline adverse current to body and heating installation pipe arrangement.

Especially in condensation gas boiler, the high-temp waste gas that produces during burning carries a large amount of heat energy, in order to improve the thermal efficiency, can make the cooling segment of waste gas by heat exchanger, when temperature is lower than dew point, and waste gas meeting condensation, and discharge heat, can be for utilizing again.

This gas fired-boiler is arranged in the room or the nearer place from the room mostly, the characteristic of fuel the and indoor security that factor all can influence use is set etc. in use, so need the necessity of lay special stress on ventilation, be that the indoor back of waste gas inflow is caused by the carbon monoxide in the waste gas (CO) greatly in the in fact relevant accident with boiler.

Especially in the use of condensation gas boiler, condensed water does not reach under the state of certain water level in the condensed water receiving tube, during trial operation of boiler, though the waste gas major part that burning is produced is arranged to the outside by exhaust outlet, but, the condensed water that waste gas produced that carries out heat exchange by heat exchanger reaches in the condensed water receiving tube before certain water level, and a part of waste gas can flow to indoor by the condensed water receiving tube, and this is an existing problem in the past the structure.

Therefore, the purpose of this utility model is to solve condensation gas boiler indoor problem of part waste gas inflow when test running in the past, provide such gas fired-boiler condensate water level checkout gear: the water level that detects condensed water in the condensed water receiving tube that residues in syphon structure automatically for this reason, during initial stage boiler test running if detect certain water level less than condensed water, then stop boiler work automatically, prevent that from structure a part of high-temp waste gas from flowing into indoor by the condensed water receiving tube.

For achieving the above object, design feature of the present utility model is: the level detection sensor that is electrically connected with master controller is installed in two ends up and down in the middle part at above-mentioned condensed water receiving tube.

As mentioned above, the utility model is by the condensate water level checkout gear of gas fired-boiler, detection has the residual water level of the interior condensed water of condensed water receiving tube of siphonage, when boiler initialization or detection in service during less than the condensed water of certain water level, boiler quits work automatically, thereby when high-temp combustion is worked, prevent that from structure part waste gas from flowing into the generation of indoor phenomenon by the condensed water receiving tube, and reach the effect that can improve boiler safety.

Below, the enforcement illustration by the utility model requirement is described in detail as follows.

Fig. 1 is for being equipped with the cut-away view of the gas fired-boiler of condensate tank of dehumidifier in the utility model.

Fig. 2 is the detailed structure view of condensed water checkout gear of the present utility model.

The corresponding symbol in main position is respectively among the figure:

10: condensed water receiving tube 12: overflow pipe

14: condensation-

water drain

16a, 16b: level detection sensor

20: exhaust portion 22: discharge duct

24: exhaust outlet 26: main heat exchanger

30: master controller

As shown in Figure 1, high-temp waste gas carries out heat exchange when the process main heat exchanger 26 of exhaust portion 20 positions,

At the condensed water that the following condensation of dew-point temperature forms, arrange to the outside by condensation-water drain 14; Simultaneously, the condensed water receiving tube 10 that is connected between the discharge duct 22 of above-mentioned exhaust portion 20 bottoms and the condensation-water drain 14 is syphon structure, makes condensed water keep certain water level here.

And condensed water receiving tube 10 forms 180 ° of bend pipes, so that change its flow direction after making condensed water reach certain water level; Certain distance is pressed at the position therebetween, the level detection sensor 16a, the 16b that are electrically connected with master controller 30 is installed to guarantee the accurate detectability to condensed water up and down.When the residual water level of the condensed water that residues in above-mentioned condensed water receiving tube 10 middle parts was lower than

level sensor

16a, 16b place height, signal was sent to master controller 30 automatically, and can stop the boiler running automatically.

High-temp waste gas carries out the condensed water that condensation forms after the heat exchange by main heat exchanger 26, flow in the condensed water receiving tube 10 of the syphon structure that is connected with exhaust portion 20, discharge duct 22 belows, keep certain water level, and can flow to outside by condensation-water drain 14; Simultaneously, when too much condensed water flows into above-mentioned condensed water receiving tube 10, can overflow by overflow pipe 12.

Condensed water in the utility model in the condensed water receiving tube 10 can keep certain water level, detects the residual water level of condensed water automatically by level detection sensor 16a, the 16b that installs on the height of the residual water level of condensed water.When the condensed water that is undertaken freeze-outing after the heat exchange by main heat exchanger 26 at the initial work of boiler or high-temp waste gas in service can not keep certain water level in condensed water receiving tube 10 middle parts that its flow direction can switch, detect and stop boiler operatiopn automatically by the level detection sensor 16a that is installed in condensed water receiving tube 10 middle parts, 16b.

That is to say, when the initial work of boiler or in service, the residual water level of condensed water does not reach normal water level in the condensed water receiving tube 10, and cause a part of waste gas by before the indoor phenomenon generation of the open space inflow of condensed water receiving tube 10, by the level detection sensor 16a that is arranged in the above-mentioned condensed

water receiving tube

10,16b detects the residual water level of condensed water automatically, stop boiler work, can prevent that like this condensed water from reaching before certain water level in condensed water receiving tube 10, pass through condensation-water drain 14 again behind the open space of waste gas through condensed water receiving tube 10 and in the inlet chamber.

Symbol 24 expression outlets among the not elsewhere specified figure are that waste gas passes through the outlet of exhaust portion 20 rows to the outside.

Claims

1, a kind of condensate water level checkout gear of gas fired-boiler, when high-temp combustion, to pass through the cooling position of main heat exchanger (26) to the waste gas of airborne release and loss, rely on the condensation latent heat that condensation under the dew-point temperature produces, can improve the heat supply efficiency of boiler, on gas fired-boiler with condensation function, a part that is expelled to outside waste gas is undertaken being condensed into liquid after the heat exchange by above-mentioned main heat exchanger (26), for preventing the condensed water receiving tube (10) of a part of waste gas by syphon structure, flow into indoor, be provided with a condensate tank of dehumidifier, it is characterized in that: the level sensor (16a) that is electrically connected with master controller is installed in two ends up and down in the middle part at the condensed water receiving tube (10) of condensation gas boiler, (16b), when boiler operatiopn, detect the residual water level of condensed water of above-mentioned condensed water receiving tube (10) automatically.