KR102168329B1 - Collecting device for detecting carbon monoxide in condensing boiler - Google Patents

Abstract

Provided is a collecting device for detecting carbon monoxide of a condensing boiler. The collecting device of exhaust gas is installed in an exhaust gas chamber of a casing in which a spiral pipe heat exchanger is fixed and installed to detect carbon monoxide included in the exhaust gas discharged to the outside from a condensing boiler to heat heating water by having combustion gas burned in a burner exchange heat with the spiral pipe heat exchanger. The collecting device of exhaust gas comprises: a sensor unit for detecting carbon monoxide by having at least one sensor in a sensor fixing plate, which has a detecting end exposed to exhaust gas; a sensor fixing unit having a sensor fixing pipe detachably mounted on a mounting hole of an exhaust chamber by forming a gas discharge hole to penetrate the outer surface corresponding to the detecting end of the sensor, and having a flange unit in which the sensor fixing plate inserted into one end of the sensor fixing pipe through the other open end of the sensor fixing pipe is fixed and installed, so as to be fixed and installed in the exhaust chamber; and an inducing collection unit having a guiding pipe extending by a predetermined length to the outside from the sensor fixing plate by forming a guiding hole for guiding the exhaust gas to the sensor, forming an inducing hole extending from the guiding hole of the guiding pipe, having an inducing pipe of a predetermined length extending to the outside from the other end of the guiding pipe so as to induce and guide the exhaust gas to be temporarily stayed therein. According to the present invention, detection efficiency and accuracy of a sensor for carbon monoxide included in exhaust gas can be increased to improve product reliability.

Description

Collecting device for detecting carbon monoxide in condensing boiler}

The present invention relates to a device for collecting exhaust gas so as to detect carbon monoxide contained in exhaust gas discharged from the condensing boiler, and more particularly, heat exchange to heat the heating water inside the condensing boiler to be discharged to the outside. The present invention relates to a collecting device for detecting carbon monoxide of a condensing boiler capable of accurately detecting carbon monoxide contained in exhaust gas while collecting exhaust gas and temporarily staying therein.

In general, a heating boiler is a facility that heats a room by exchanging combustion heat generated by combustion of fuel such as city gas with circulating water circulating along a circulation line.

These heating boilers are roughly classified into general boilers and condensing boilers.The condensing boiler is divided into a sensible heat heat exchange space and a latent heat heat exchange space, and the inner space of the casing constituting the body is divided into a latent heat heat exchange space to preheat the heating water. This boiler has a pipe and a sensible heat heat exchange pipe disposed in a sensible heat heat exchange space and heated directly by a burner to recover latent heat of condensation of water vapor contained in the exhaust gas of the boiler to increase thermal efficiency.

Exhaust gas emitted from a combustion device such as a burner provided in such a heating boiler contains carbon dioxide (CO2), but when incomplete combustion of fuel occurs during the combustion process, carbon monoxide (CO), which adversely affects the human body, is generated.

In addition, when carbon monoxide enters the room, asphyxiation may occur, and when it is released to the atmosphere, it acts as a cause of air pollution.

Accordingly, a variety of devices have been developed to prevent the generation of carbon monoxide by initially detecting carbon monoxide generated in incomplete combustion of a heating boiler, and are applied to heating boilers.

(Patent Document 1) KR10-0377334 B1

In Patent Document 1, a gas burner and a heat exchanger are mounted inside the combustion housing, and a CO sensor for measuring the amount of carbon monoxide contained in the exhaust gas discharged to the outside is attached to the exhaust part installed at the top of the combustion housing. In the combustion device, a guide for blocking the airflow of exhaust gas discharged from the exhaust part and guiding the blocked airflow to the CO sensor side is installed, and the CO sensor is directly connected to the exhaust gas by a cover housing. Disclosed is an exhaust gas collecting device of a combustion apparatus in which a contact is prevented and a plurality of through holes through which exhaust gas can be introduced and discharged are formed in the bottom and side surfaces of the cover housing.

However, in the process of additionally installing a plate-shaped guide frame for guiding the exhaust gas to the CO sensor side while blocking the direction of the airflow so that the total number of components is large and the exhaust gas is mixed while colliding with the exhaust gas, the conventional collecting device Since sufficient installation space must be secured between the heat exchanger pipe and the heat exchanger pipe, the overall volume of the combustion housing increases and acts as a major source of obstruction to the miniaturization design of the heating boiler. The maintenance cost required to repair and replace was excessive.

And, when the detection end of the CO sensor is contaminated by condensate generated on the wall of the combustion housing due to moisture contained in the exhaust gas discharged through heat exchange, the detection efficiency of the sensor is degraded, while the boiler is caused by a detection error. There was a problem that lowered the reliability of the product.

Accordingly, the present invention is to solve the above-described problems, the purpose of which is to increase the collection efficiency of exhaust gas discharged from the outside after heat exchange in a condensing boiler, and prevent sensor contamination due to condensate water generated when collecting exhaust gas. Thus, it is intended to provide a collecting device for detecting carbon monoxide of a condensing boiler that can improve the detection efficiency and precision of carbon monoxide contained in exhaust gas.

Another object of the present invention is to provide a collecting device for detecting carbon monoxide of a condensing boiler, which can minimize the number of components and minimize the installation space to meet the miniaturization design of the condensing boiler and increase design freedom of the boiler facility.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. I will be able to.

As a specific means for achieving the above object, in a preferred embodiment of the present invention, the combustion gas burned in the burner is heat-exchanged with a spiral pipe type heat exchanger to heat the heating water, and is contained in the exhaust gas discharged to the outside. A device that is installed in an exhaust chamber of a casing in which a spiral pipe type heat exchanger is fixedly installed to detect carbon monoxide to collect the exhaust gas, wherein the exhaust chamber has a space in which the spiral pipe type heat exchanger is installed, and the heat exchanger is installed. After the exhaust gas passes through the space, it moves upward along the inner surface of the casing, passes through the opening formed in the upper first corner of the exhaust chamber, and then the central part of the upper surface of the exhaust chamber at the top of the opening. It is formed to be discharged to the outside through a discharge pipe connected to an exhaust port located at, and the device for collecting the exhaust gas is spaced apart from an opening in the center of the upper surface of the exhaust chamber and is perpendicular to the extending direction of the first edge part. A sensor unit installed at a lower end of the second edge unit extending to, and having at least one detection sensor exposed to the exhaust gas on a sensor fixing plate to detect carbon monoxide; A sensor fixing tube is provided that is detachably mounted in the mounting hole of the exhaust chamber by passing through a gas discharge hole on an outer surface corresponding to the detection end of the detection sensor, and through the opened other end of the sensor fixing tube at one end of the sensor fixing tube. A sensor fixing unit fixedly installed in the exhaust chamber having a flange portion to which the inserted sensor fixing plate is fixedly installed; And a guide tube extending outward from the sensor fixing tube by forming a guide hole for guiding the exhaust gas toward the detection sensor, forming a guide hole extending from the guide hole of the guide tube, and the other end of the guide tube An induction collecting unit for temporarily staying by guiding and guiding exhaust gas with an induction tube of a certain length extending outward from Including, the sensor fixing tube is provided with a male screw portion screwed to the female screw portion of the mounting hole formed in the protruding portion protruding inward from the inner surface of the exhaust chamber, at least one so as to discharge the condensate to the outside by its own weight. The condensate discharge hole is formed through the lowermost outer surface, and an inner gasket is provided between the flange part and the sensor fixing plate, and the central hole corresponding to the outer diameter of the sensor fixing tube is passed between the flange part and the exhaust chamber. It is provided with a formed external gasket, and the guide tube is a hollow tube body that is detachably screwed while being connected in communication with the sensor fixing tube by having a female threaded portion and a male threaded portion screwed at one end formed on the open one end of the sensor fixing tube. And the guide hole of the guide tube is provided with an inner diameter larger than the inner diameter of the guide hole of the guide tube, and between the guide hole and the guide hole, the fluid velocity of the exhaust gas guided from the guide hole toward the guide hole is lowered, In order to increase the residence time until discharged through the gas discharge hole formed through the uppermost layer of the sensor fixing tube, the inner diameter gradually expands toward the sensing sensor, and the guide hole is a guide hole through which the exhaust gas is introduced. One end forming an inclined surface inclined at a certain angle to increase the amount of exhaust gas flowing into the guide hole per unit time by expanding the opening area of the inlet end, and forming a connection hole communicating with the guide hole of the guide tube It includes a guide pipe of a predetermined length coupled to the guide pipe, and a cut portion cut to the lower side is formed on an outer surface of the body on the outer surface of the guide pipe, and the sealed other end of the guide pipe is an inner surface of the exhaust chamber It provides a collecting device for detecting carbon monoxide of a condensing boiler that is supported in contact with a support jaw protruding from the condensing boiler.

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According to the preferred embodiment of the present invention as described above has the following effects.

The object to be detected by delaying the rate at which the exhaust gas is discharged through the gas discharge hole in the process of the exhaust gas flowing into the exhaust chamber after heat exchange with the heat exchanger is introduced to the inlet end of the guide tube and guided through the guide tube to the detection sensor Since the residence time of phosphorus exhaust gas is prolonged and thus the collecting efficiency of the exhaust gas can be increased, the detection efficiency and precision of the detection sensor for carbon monoxide contained in the exhaust gas can be improved, thereby improving the reliability of the product.

Since the condensed water generated in the inner space where the detection sensor is placed can be efficiently discharged to the bottom of the exhaust chamber, the cleanliness of the detection end of the detection sensor can be increased to ensure stable detection performance.

The overall number of components can be reduced, and since it can be easily installed in an exhaust chamber having a narrow internal space, it is possible to achieve a miniaturization design of the condensing boiler, and increase the degree of satisfaction by increasing the design freedom of the boiler facility.

1 is an installation state diagram showing a collecting device for detecting carbon monoxide of a condensing boiler according to an embodiment of the present invention.
2 is a schematic view showing a state in which a collecting device for detecting carbon monoxide of a condensing boiler according to an embodiment of the present invention is installed in an exhaust chamber of a main casing.
3 is an external perspective view showing a collecting device for detecting carbon monoxide of a condensing boiler according to an embodiment of the present invention.
4A and 4B are exploded perspective views of a collecting device for detecting carbon monoxide of a condensing boiler according to an embodiment of the present invention.
5 is a cross-sectional view showing a collecting device for detecting carbon monoxide of a condensing boiler according to an embodiment of the present invention.
6 is a cross-sectional view showing a configuration in which an induction pipe is applied in a collecting device for detecting carbon monoxide of a condensing boiler according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in which a person of ordinary skill in the art can easily implement the present invention. However, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings.

In addition, throughout the specification, when a part is said to be'connected' to another part, it is not only'directly connected', but also'indirectly connected' with another element in the middle. Include. In addition, "including" a certain component means that other components may be further included, rather than excluding other components unless specifically stated to the contrary.

In the collecting device 1 for detecting carbon monoxide of a condensing boiler according to a preferred embodiment of the present invention, as shown in Figs. 1 and 2, the combustion gas burned in the burner 70 is converted into a spiral pipe type heat exchanger 80 and In the exhaust chamber 45 of the casing 40 in which the spiral pipe type heat exchanger 80 is fixedly installed in order to detect carbon monoxide contained in the exhaust gas discharged to the outside from the condensing boiler 100 that heats and heats the heating water. It is installed and includes a sensor unit 10, a sensor fixing unit 20, and an induction collecting unit 30 so as to collect exhaust gas.

The condensing boiler 100 is a process in which the combustion gas generated during combustion in the burner 70 supplied with fuel gas and air passes through the spiral pipe type heat exchanger 80 through which heating water is circulated, as shown in FIG. The heating water is heated and circulated by heat exchange between the combustion gas and the spiral pipe type heat exchanger (80).

And, the exhaust gas, which is the heat-exchanged combustion gas, passes through the inner space of the exhaust chamber 45 through the opening 43 of the casing 40 having a space S in which the spiral pipe type heat exchanger 80 is installed. Then, it is discharged to the outdoors through the discharge pipe 50 connected in communication with the exhaust port 42 of the exhaust chamber.
The exhaust chamber 45 has a space S in which the spiral pipe type heat exchanger 80 is installed, and after the exhaust gas passes through the space in which the heat exchanger is installed, along the inner surface of the casing 40 The discharge pipe 50 is moved upward and passes through the opening 43 formed in the upper first corner of the exhaust chamber, and then connected to the exhaust port 42 located at the center of the upper surface of the exhaust chamber above the opening. ) To be discharged outdoors.

In FIG. 1, reference numeral 52 denotes an external pipe for introducing air, which is external air, through a gap formed between the discharge pipe installed on the outer wall W, and reference numeral 54 is combined with the spiral pipe type heat exchanger. The casing 40 and the burner 70 are a connection pipe that connects the boiler casing 60 and the external pipe installed in the inner space, and reference numeral 85 denotes a spiral pipe type of high-temperature combustion gas generated from the burner. It is a connecting pipe that guides and discharges to the heat exchanger.

As shown in FIGS. 3, 4A, 4B and 5, the sensor unit 10 senses the exhaust gas discharged through the exhaust chamber of the casing after heat exchange with the spiral pipe type heat exchanger 80 It is equipped with at least one detection sensor 11 to which the end is exposed, and is equipped on a sensor fixing plate 12 on which the detection sensor 11 is fixedly installed to detect carbon monoxide.

The detection sensor 11 is provided as a gas sensor that detects and measures a gas component such as carbon monoxide contained in exhaust gas, and the detection sensor may be provided as a gas sensor having a function of measuring the temperature of the exhaust gas.

The detection sensor includes a cable 13 electrically connected to a control panel panel (not shown) to transmit detection information including the concentration of carbon monoxide to the outside.

The detection sensor 11 is spaced apart from an opening in the center of the upper surface of the exhaust chamber and is installed at a lower end of the second edge portion extending in a direction perpendicular to the extension direction of the first edge portion.

As shown in FIGS. 3, 4A, 4B, and 5, the sensor fixing part 20 is introduced into an outer surface corresponding to the sensing end of the sensing sensor 11 through the induction collecting part to It includes a sensor fixing pipe 21 formed through at least one gas discharge hole 23 for discharging the exhaust gas in contact with the sensing end of the exhaust gas into the interior of the exhaust chamber.

The sensor fixing pipe 21 may be formed of a tube having a predetermined length in which one end, which is detachably mounted in the mounting hole 41 of the exhaust chamber 45, is opened and the other end is sealed.

The sensor fixing pipe 21 is shown to be provided with a male threaded portion 21a that is screwed with a female threaded portion formed in the mounting hole of the exhaust chamber, and the mounting hole is formed on a protruding portion protruding inward from the inner surface of the exhaust chamber. It has been shown and described as being coupled to the sensor fixing tube, but is not limited thereto, and the sensor fixing tube 21 may be assembled by a fitting method or an insertion method in the mounting hole of the exhaust chamber, and the outer surface of the exhaust chamber It is formed on the protruding portion protruding outward and can be coupled to the sensor fixing tube.

The sensor fixing pipe 21 is at least one condensate discharge hole 24 for discharging condensed water to the outside so as to prevent contamination of the sensing end of the sensing sensor by condensate generated by condensation of moisture contained in the exhaust gas. It is preferable to form through.

Here, the gas discharge hole 23 is located on the uppermost outer surface of the sensor fixing pipe installed in the exhaust chamber, and the condensed water discharge hole 24 is located on the lowermost external surface of the sensor fixing pipe, so that the detection sensor detects it. It is possible to perform more smoothly discharging the generated exhaust gas to the exhaust chamber side and discharging the condensed water to the outside by its own weight.

One end of the sensor fixing pipe 21 includes a flange portion 22 for fixing and installing a sensor fixing plate 12 inserted through the open other end of the sensor fixing pipe.

The flange portion 22 is formed through an exposed hole 22a through which one end of the detection sensor electrically connected to the cable is exposed to the outside, and a fastening member that is fastened to the fastening hole 16 formed in the sensor fixing plate 12 ( 26) is provided with a through hole (22b) through which is disposed.

At this time, between the flange portion 22 and the sensor fixing plate 12, a central hole 15a through which one end of the detection sensor electrically connected to the cable is disposed is formed through, and another penetration through which the fastening member passes. It is preferable to have an inner gasket 15 formed through the hole 15b.

In addition, an outer gasket 25 formed through a central hole 25a corresponding to the outer diameter of the sensor fixing tube 21 between one side of the flange 22 and the outer surface of the exhaust chamber 45 It is equipped with.

It is possible to block exhaust gas from being discharged to the outside through the coupling portion between the sensor fixing plate and the detection sensor and the coupling portion between the sensor fixing pipe and the exhaust chamber by the inner gasket 15 and the outer gasket 25.

Accordingly, the sensor fixing unit 20 coupled with the sensor unit including the detection sensor is assembled in a screwing manner to the female screw portion of the mounting hole 41 formed in the exhaust chamber 45 of the casing 40, The operator can separate and re-install it from the exhaust chamber during maintenance.

As shown in FIGS. 3, 4A, 4B, and 5, the induction collecting unit 30 guides the exhaust gas toward the sensing end of the sensing sensor located inside the sensor fixing tube and temporarily stays thereafter. It includes a guide tube and a guide tube so that it can be discharged.

The guide tube 31 is formed of a hollow tube body extending a predetermined length outward from the open end of the sensor fixing tube 21 by penetrating through the center of the body a guide hole 35c for guiding the exhaust gas toward the detection sensor. I can.

This guide pipe 31 is provided with a male screw portion 33 at one end that is screwed with a female screw portion formed on an inner circumferential surface of the open one end of the sensor fixing pipe 21, and is detachably assembled while being connected in communication with the sensor fixing pipe. It may be made of a hollow tube of a predetermined length provided with the extension tube at the other end.

The guide tube 32 forms a guide hole 35a extending from the guide hole 35c of the guide tube 31, and is provided as a hollow tube of a predetermined length extending outward from the other end of the guide tube 31 Can be.

Here, the guide tube 32 has been illustrated and described as being provided as an integral hollow tube body extending a certain length outward from the other end of the guide tube 31, but is not limited thereto, and one end is detachable to the other end of the guide tube It may be provided with a hollow tube to be assembled to.

And, the guide hole (35c) of the guide tube (31) is provided with an inner diameter larger than the inner diameter of the guide hole (35a) of the guide tube (32), between the guide hole (35c) and the guide hole (35a) In order to lower the fluid velocity of the exhaust gas guided from the guide hole 35a toward the guide hole, the inner diameter gradually expands toward the detection sensor to form an expanding hole 35b.

Accordingly, the exhaust gas introduced through the inlet ends of the guide hole 35c and the guide hole 35a passes through the expansion hole 35b formed between the guide hole 35c and the guide hole 35a. Since the residence time until discharged through the gas discharge hole can be increased, the detection efficiency and precision of detecting carbon monoxide in the exhaust gas at the sensing end of the detection sensor can be improved.

In addition, at the inlet end of the guide hole 35c, an inclined surface 32a inclined at a certain angle to increase the amount of exhaust gas flowing into the guide hole per unit time by increasing the opening area through which the exhaust gas is introduced. It is preferable to form.

On the other hand, as shown in Figure 6, including a guide pipe (36) of a predetermined length formed with a connection hole (36a) at one end coupled to the guide tube to communicate with the guide hole (35a) of the guide tube (32) And, by forming an incision 37 cut in a substantially semicircular cross-section toward the lower side on the outer surface of the guide pipe 36, the exhaust chamber 45 through the opening 43 of the casing 40 The exhaust gas discharged to the side hits the inner surface of the guide pipe through the cutout and then is naturally guided to the guide hole 35a of the guide pipe, thereby increasing the collection efficiency of the exhaust gas.

The sealed other end of the guide pipe 36 corresponding to the opening 43 is supported in contact with a support jaw 38 protruding from the inner surface of the exhaust chamber 45, thereby being discharged into the exhaust chamber through the opening. It is possible to stably maintain the horizontal state of the guide pipe 36 that guides the exhaust gas to the induction pipe side.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications and changes are possible within the scope of the technical spirit of the present invention. It will be obvious to those who have the knowledge of.

10: sensor unit
11: detection sensor
12: sensor fixing plate
20: sensor fixing unit
21: sensor fixing tube
22: flange portion
23: gas discharge hole
24: condensate discharge hole
30: guided collection unit
31: guide
32: guide tube
35a: judo ball
35b: expansion hole
35c: guide
36: guide pipe
37: incision
38: support jaw
40: casing
41: mounting hole
45: exhaust chamber
50: discharge pipe
60: boiler casing
70: burner
80: spiral pipe type heat exchanger
100: condensing boiler

Claims (6)

It is installed in the exhaust chamber of the casing in which the spiral pipe type heat exchanger is fixed to detect carbon monoxide contained in the exhaust gas discharged to the outside from the condensing boiler that heats the heating water by exchanging the combustion gas burned in the burner with the spiral pipe type heat exchanger. A device for collecting the exhaust gas,
The exhaust chamber has a space in which the spiral pipe type heat exchanger is installed, and after the exhaust gas passes through the space in which the heat exchanger is installed, the exhaust gas moves upward along the inner surface of the casing to move the upper first side of the exhaust chamber. After passing through the opening formed in the corner, it is formed to be discharged to the outside through a discharge pipe connected to an exhaust port located at the center of the upper surface of the exhaust chamber above the opening,
The device for collecting the exhaust gas is installed at the lower end of the second edge portion, which is spaced apart from the opening in the central portion of the upper surface of the exhaust chamber and extends in a direction perpendicular to the extension direction of the first edge portion, A sensor unit for detecting carbon monoxide by installing at least one detection sensor to which the detection end is exposed on the sensor fixing plate;
A sensor fixing tube is provided that is detachably mounted in the mounting hole of the exhaust chamber by passing through a gas discharge hole on an outer surface corresponding to the detection end of the detection sensor, and through the opened other end of the sensor fixing tube at one end of the sensor fixing tube. A sensor fixing unit fixedly installed in the exhaust chamber having a flange portion to which the inserted sensor fixing plate is fixedly installed; And
A guide hole for guiding the exhaust gas toward the detection sensor is provided, and a guide tube extending outward from the sensor fixing tube is provided, forming a guide hole extending from the guide hole of the guide tube, and from the other end of the guide tube An induction collecting unit for temporarily staying by guiding and guiding exhaust gas with an induction tube of a predetermined length extending outward; Including,
The sensor fixing tube has a female screw part of a mounting hole formed on a protruding part protruding inward from the inner surface of the exhaust chamber and a male screw part screwed, and has at least one condensate discharge hole to discharge the condensate to the outside by its own weight. It penetrates through the outermost surface,
An inner gasket is provided between the flange portion and the sensor fixing plate, and an outer gasket formed through a central hole corresponding to the outer diameter of the sensor fixing tube is provided between the flange portion and the exhaust chamber,
The guide tube is provided as a hollow tube body that is detachably screwed while being connected in communication with the sensor fixing tube by having a female thread formed on the inner circumferential surface of the sensor fixing tube and a male thread screwed at one end,
The guide hole of the guide tube is provided with an inner diameter larger than the inner diameter of the guide hole of the guide tube, and between the guide hole and the guide hole, the fluid velocity of the exhaust gas guided from the guide hole to the guide hole is lowered to reduce the flow rate of the sensor fixing tube. To increase the residence time until discharged through the gas discharge hole formed through the outer surface of the uppermost layer, the inner diameter gradually expands toward the sensing sensor, and
The guide hole has an inclined surface inclined at a certain angle so as to increase the amount of inflow of exhaust gas per unit time flowing into the guide hole of the guide pipe by increasing the opening area of the inlet end through which the exhaust gas is introduced,
One end forming a connection hole communicating with the guide hole of the guide tube includes a guide pipe of a predetermined length coupled with the guide tube, and a cutout cut to the lower side of the guide pipe is formed on the outer surface of the body, The sealed other end of the guide pipe is supported in contact with a support jaw protruding from an inner surface of the exhaust chamber, and a collecting device for detecting carbon monoxide of a condensing boiler. delete delete delete delete delete

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