KR200453569Y1 - a water-trap of boiler - Google Patents

Abstract

The present invention relates to a water trap for dewatering and draining condensed water generated from a heat exchanger of a boiler. A plurality of partitions are provided inside the water trap, and each partition is provided with a detachable filter having a hole formed at one side thereof. The hole position of the filter is alternately provided to the upper side and the lower side to increase the time for condensate to stay in the water trap so that the condensate can be sufficiently neutralized, and the manufacturing cost is reduced because the filters provided in each partition are all manufactured in the same shape. It is a water trap for a boiler having an effect.

Water traps, bulkheads, filters, condensate

Description

Water trap for boilers

The present invention relates to a water trap for a boiler, and more particularly to a water trap for a boiler for draining the fresh water condensate generated from the heat exchanger of the boiler.

In general, many types of boilers are installed in the home as a means of providing heating and hot water. Such a boiler has a combustion unit for igniting and combusting a large supply of fuel, a heat exchanger that transfers the amount of heat generated from the combustion unit to the heating water, so that the boiler is heated to a high temperature state, and heating water that has undergone heat exchange at a high temperature state. It is divided into heating piping to circulate and supply hot water. It is divided into gas boiler and oil boiler according to the fuel used for combustion.

On the other hand, in recent years, condensing gas boilers having a heat exchanger composed of a sensible heat exchanger and a latent heat exchanger have been popularized to maximize thermal efficiency with minimal fuel consumption. The steam contained is condensed below the dew point temperature and discharged to the outside of the heat exchanger. The acidity of the condensate is about pH3 to PH4, which is corrosive when it comes into contact with the components of the boiler. Rather, there is a problem that causes environmental pollution when drained as it is.

In order to prevent corrosion and environmental pollution of boiler parts generated by acid condensate drainage, condensate discharged from the heat exchanger was drained through a separate water trap.

FIG. 6 is a schematic view illustrating a conventional water trap used in a boiler, and FIG. 7 is a schematic perspective view illustrating a water trap according to FIG. 6.

As shown therein, the existing water trap 100 includes a body tank 110 capable of accommodating water in the lower portion of the heat exchanger 210, and heat exchanges the upper lid 120 of the body tank 110. The connection pipe 212 connected to the heat exchanger 210 to drain the condensate generated in the process, and the connection pipe 222 connected to the water tank 220 so that the overflowed water from the water tank 220 can be drained. ) Is installed to be inserted.

In addition, the interior of the body tank 110 is provided with a plurality of partitions 112 having different heights, the receiving portion divided into a portion formed so that the condensed water is accommodated and the overflowed water can be directly drained 115 and the condensate filled in the receiving portion 115 at the bottom of one body tank 110 of the receiving portion 115 is drained over the partition 112 and at the same time the overflowed water can be directly drained. It consists of a drain 118 is formed a drain hole (110a).

That is, the water trap 100 is the condensed water flowing from the heat exchanger 210 is filled in the receiving portion 115 and filled with a larger amount of condensate than the height of the partition wall 112, the water tank over the partition wall 112 Along with the overflowed water at 220, it is drained to the drain 110a to allow the acidic condensate to be drained in a diluted state.

However, in order to dilute the actual condensate, a larger amount of water had to be supplied, resulting in a waste of resources and economic losses due to excessive use of the dilution water.

The neutralizing agent was added to the inside of the body tank to neutralize the acidic condensate, thereby reducing the amount of dilution water used. However, the neutralizing effect was not satisfactory, which made it difficult to effectively prevent corrosion and environmental pollution of boiler components. .

The present invention aims to provide a water trap for a boiler in which the condensed water can be neutralized and discharged more effectively, and the condensed water is drained even if it is blocked by freezing or foreign substances.

In addition, an object of the present invention is to provide a water trap for the boiler to block the operation of the boiler when the condensate inlet freezing or blocked by foreign matter.

In addition, an object of the present invention is to provide a water trap for a boiler to prevent freezing of the inside of the water trap due to a decrease in external temperature.

In addition, an object of the present invention is to provide a water trap for a boiler to prevent the expansion of the heating water due to boiling of the heating water, the pressure rise.

It is also an object of the present invention to provide a water trap for a boiler in which the body tank and the cover have a higher airtightness.

The present invention to achieve the above object,

A body tank having a space divided by a plurality of partitions, a body tank having a drainage hole at a lower surface thereof, a heat exchanger connector connected to a heat exchanger, and a water tank connector connected to a water tank and an overflowed water inlet connected to the water tank. In the water trap for the boiler comprising a cover provided at the top of the, and the neutralizing agent is installed inside the body tank to neutralize the condensate,

The partition wall includes a first partition wall surrounding the heat exchanger connector side through which the condensate flows, a second partition wall dividing the center of the space part, and a third partition wall surrounding the drain port side through which the condensate water is discharged, each partition wall body tank. Formed below the height of

Each partition wall is provided with a removable filter formed with a hole on one side,

The filter of the first bulkhead and the third partition wall provides a water trap for the boiler, characterized in that the hole is located on the upper side, the filter of the second partition wall is provided so that the hole is located on the lower side.

In addition, the present invention provides a water trap for the boiler, characterized in that the pressure sensor is provided on one side of the heat exchanger connector to control the operation of the boiler.

In addition, the present invention provides a water trap for the boiler, characterized in that the body tank is further provided with a hot water supply pipe passing through the inside, and a temperature sensor for sensing the temperature inside.

In addition, the present invention is provided with a water return pipe is formed on the side of the body tank for the return of the heating water, the return pipe is a through-pipe connected to the hot water supply pipe through the body tank provides a water trap for the boiler do.

In addition, the present invention is provided with a packing that is pressed and coupled between the body tank and the cover, the bottom of the packing is formed with a packing groove is coupled to the fitting groove formed in the body tank, the upper surface of the packing two or more protrusions It provides a water trap for a boiler, characterized in that formed.

As described above, the water trap for the boiler of the present invention has a hole in the filter provided in each partition alternately positioned up and down to induce the flow of condensate up and down until passing from one partition to another partition water trap By increasing the time the condensate stays in the interior, the neutralization is carried out three times, so that the condensate can be neutralized sufficiently to improve the neutralizing effect of the condensate in the water trap, and the filters provided in each partition are all manufactured in the same shape. The manufacturing cost can be reduced, and condensate can be drained through the space formed on the partition wall when freezing inside the water trap, thereby preventing the condensate from damaging the components due to backflow into the heat exchanger.

In addition, the present invention is provided with a pressure sensor in the heat exchanger connector when the drainage of the condensate is not smoothly, to prevent the inflow of condensate by blocking the operation of the boiler so that the heat exchange of the heat exchanger is no longer made, This prevents other parts from corroding due to non-drained condensate, and can quickly check for clogging of water traps, so that quick measures such as removing foreign matters can be taken.

In addition, the present invention is provided with a hot water supply pipe and a temperature sensor on the water trap to prevent the temperature drop inside the water trap by allowing the temperature sensor inside the water trap to detect the temperature decrease and to send the heating water into the inside of the water trap. By preventing the condensate freezing even without a separate heater has an effect that makes the drainage smooth.

In addition, the present invention increases the heating water of the hot water supply pipe more than the boiling point to increase the pressure of the heating water to the return pipe through the through pipe to reduce the pressure to prevent the expansion of the heating water, thereby resulting in boiler parts The breakage can be prevented, and the through tube is integrally formed with the body tank, thereby simplifying the structure and reducing the cost.

In addition, the present invention has an effect that the packing is provided between the body tank and the cover is combined with the body tank and the cover to be completely in close contact with the packing to further improve the airtightness.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited to the embodiments shown in the drawings.

1 is a perspective view showing a water trap for a boiler according to an embodiment of the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a perspective view showing a part of the body tank of Figure 1 open, Figure 4 1 is a side view, and FIG. 5 is a cross-sectional view of FIG. 1.

As shown therein, the water trap 1 for the boiler of the present invention has a space 11 divided by a plurality of partition walls 40 and a body tank 10 having a drain hole 12 formed on a lower surface thereof, and a heat exchanger. A cover 20 provided at an upper end of the body tank 10 having a heat exchanger connector 21 connected to the condensate water and a water tank connector 22 to which the overflowed water flows into the water tank; It is installed in the body tank 10 to include a neutralizer 30 to neutralize the condensate, it is installed in the lower portion of the heat exchanger.

First, the body tank 10 accommodates condensed water introduced from the heat exchanger in the space 11 formed therein, and overflows from the condensed water and the water tank accommodated in the space 11 through the drain hole 12. By discharging the introduced water to the outside of the boiler, it may be formed in the form of a box such as a square, a membranous shape, a needle shape.

The space 11 of the body tank 10 is divided by a plurality of partitions 40, the partition 40 is the first partition 41 surrounding the side of the heat exchanger connector 21 into which the condensate flows in And a second partition 42 dividing the center of the space 11 and a third partition 43 surrounding the side of the drain port 12 through which the condensed water is discharged.

In this case, the first partition 41 and the third partition 43 are formed at right angles of the partition 40 surrounding the heat exchanger connector 21 and the drain 12, respectively, and the heat exchanger connector 21 and the drain 12. 2) spaced apart from the second partition wall 42 is provided with a straight partition wall 40 that crosses the center of the body tank 10.

Here, each of the partition walls 40 is formed to be lower than the height of the body tank 10, which is because the filter 50 of the space 11 is clogged with foreign matter, or condensed water contained therein when the temperature decreases is frozen. When the condensed water is difficult to discharge to prevent the condensed water to flow back into the heat exchanger to damage the parts, as shown in Figure 5 when the inside of the body tank 10 is blocked by foreign matter or freezing, heat exchanger Instead of flowing into the hole 51 of the filter 50, the condensed water introduced from the inlet 21 is overflowed into the free space formed on the partition 40 and is immediately discharged to the drain 12 so that the condensed water is smoothly watered. It is to be discharged to the outside of the trap (1).

In addition, each of the partitions 40 is provided with a detachable filter 50 having a hole 51 formed at one side thereof, and the filter 50 of the first partition 41 and the third partition 43 is a hole 51. ) Is positioned at the upper side, and the filter 50 of the second partition wall 42 is provided such that the hole 51 is positioned at the lower side.

Here, each partition 40 is formed with an assembly groove 60 on the inner wall surface of each partition 40 and the body tank 10 so that the filter 50 is fitted.

More specifically, the first partition 41 is provided with a filter 50 on the wall surface of the side perpendicular to the second partition 42, the body in which the filter 50 is located so that the filter 50 can be fixed Assembly grooves 60 corresponding to both ends of the filter 50 are formed in the inner wall surface and the first partition wall 41 of the tank 10 so as to be assembled and fixed by inserting the filter 50 into the assembly groove 60. do.

In addition, the second partition 42 is provided with a filter 50 on the wall facing the first partition 41, the same as the first partition 41 of the body tank 10 in which the filter 50 is located An inner wall surface and an assembly groove 60 corresponding to both ends of the filter 50 are formed at one side of the second partition 42, and the third partition 43 is formed on the side facing the second partition 42. The filter 50 is provided on the wall, and the inner wall of the body tank 10 in which the filter 50 is positioned so that the filter 50 can be assembled and fixed, and the third partition 43 of the filter 50 Assembly grooves 60 corresponding to both ends are formed, and the filter 50 is assembled and fixed.

As such, the filter 50 provided in each of the partition walls 40 serves to filter foreign substances introduced with the condensate, and has a plate shape in which a hole 51 is formed to allow water to flow in one side of the longitudinal direction. Have the same shape. As described above, the filter 50 includes the filter 50 of the second partition wall 42 so that the hole 51 is positioned above the filter 50 of the first partition wall 41 and the third partition wall 43. Assemble so that the hole 51 is positioned on the lower side so that the position of the hole 51 of the filter 50 is alternately positioned on the upper side or the lower side between the partition walls 40 adjacent to each other.

This induces the flow of condensate so that the condensed water is accommodated in the body tank 10 for a longer time until the condensed water introduced into the body tank 10 is discharged through the drain port 12, and the acidic condensed water is sufficiently neutralized and discharged. To do this.

At this time, since the filters 50 all have the same shape, the operator may confuse the position of the hole 51 of the filter 50 and erroneously assemble at the time of installation. 52, the one of the assembling grooves 60 of the inner grooves of the body tank 10 and the assembling grooves 60 formed in the partition wall 40 is a height from the bottom surface of the body tank 10 filter ( It is formed so as to be a height from the longitudinal end of the 50 to the assembly protrusion 52, one side of the filter 50 is completely fitted into the assembly groove 60, one side where the assembly protrusion 52 is formed is the assembly protrusion 52 Only the portion where the assembling protrusion 52 is formed is fitted into the assembly groove 60.

This is for instructing the insertion direction of the filter 50 through the assembly protrusion 52, as shown in the drawing, the assembly protrusion 52 is formed on the right side based on the hole 51 position of the filter 50. The first bulkhead 41 and the third bulkhead 43 are formed with only the height of the assembling protrusion 52 of the assembling groove 60 on each of the partition walls 40, and the second bulkhead 42 is the body tank 10. When the assembling groove 60 of the inner wall surface is formed by the height of the assembling protrusion 52, the first and second partition walls 41 and 43 must be fitted with the holes 51 of the filter 50 positioned on the upper side. The assembly protrusion 52 can be assembled without catching the assembly protrusion 52, and the third protrusion 43 must be inserted in a manner such that the hole 51 of the filter 50 moves downward so that the assembly protrusion 52 is locked. The filter 50 can be assembled without this.

That is, when the filter 50 is inserted in such a manner that the hole 51 of the filter 50 goes upward in the third partition 43, the assembling protrusion 52 formed at the center of the filter 50 is the third partition 43. Since the assembling protrusion 52 is caught in the assembling groove 60 formed on the side and is no longer fitted, the operator recognizes that the filter 50 is incorrectly assembled and induces the filter 50 to be changed in the direction of installation. It is possible to prevent the 50 from being incorrectly assembled.

The cover 20 of the water trap 1 is detachably coupled to the upper end of the body tank 10 to prevent random discharge of the neutralizer and condensed water in the body tank 10, and to prevent the inside of the body tank 10. For protection, a heat exchanger connector 21 and a water tank connector 22 are formed.

First, the coupling of the body tank 10 and the cover 20 is a coupling protrusion 16 is formed at a predetermined interval on the upper side of the body tank 10, the body tank 10 at the bottom of the cover 20 The coupling groove 23 is formed in a position corresponding to the coupling protrusion 16 of the coupling protrusion 16 is coupled by the interference fit between the coupling protrusion 16 and the coupling groove 23, the cover 20 ) Is formed larger than the body tank 10 so that the upper outer surface of the body tank 10 can be tightly wrapped.

 The heat exchanger connector 21 is to be connected to the connection tube of the heat exchanger so that the condensed water is introduced, it is formed to extend to the lower side of the body tank 10, the opposite of the drain port 12 of the body tank (10) It is formed to be located on the side so that the introduced condensate can be neutralized for a longer time.

The water tank connector 22 is connected to the connection pipe of the water tank so that water is introduced into the body tank 10, so that the water tank is located directly above the drain port 12 so that the water can be immediately discharged as it is introduced. do.

The neutralizer 30 filled in the body tank 10 is for neutralizing acidic condensed water, and is filled in all the spaces 11 except for the drain port 12 surrounded by the third partition 43. Reference numeral 30 may be composed of an alkaline substance such as calcium chloride, magnesium oxide, calcium carbonate, or an amphoteric metal such as aluminum, zinc or tin.

Water trap 1 for the boiler of the present invention having the configuration as described above is the neutralizing agent (30) while the condensed water introduced into the heat exchanger connector 21 is gradually filled from the lower portion of the body tank (10) The first neutralized by the condensate, when the condensed water reaches the height of the upper hole 51 of the filter 50 of the first partition 41, the first neutralized condensate out of the first partition 41 through the hole 51 Flows out, the condensed water flows from the upper side of the body tank 10 to the lower side and secondary neutralization is led to the hole 51 located below the filter 50 of the second bulkhead 42 and flows out again, When the condensed water reaches the height of the upper hole 51 formed in the filter 50 of the third partition 43 by filling the body tank 10 from the lower side to the upper side and flows out through the hole 51 Through 12 it is discharged out of the boiler.

That is, the boiler water trap 1 of the present invention has the holes 51 of the filter 50 provided in each of the partition walls 40 are alternately positioned up and down, so that one partition wall 40 to the other partition wall 40. Induces the flow of condensate to move up and down until passing through to increase the time the condensate stays in the water trap (1) to neutralize the three times so that the condensate can be sufficiently neutralized in the water trap (1) The neutralization effect of the condensate can be improved, and manufacturing costs can be reduced because the filters 50 provided in each partition wall 40 are all manufactured in the same shape.

On the other hand, the water trap 1 for the boiler of the present invention is further provided with a drain portion 70 in the lower portion of the heat exchanger inlet 21 side of the body tank 10 in order to easily remove deposits such as foreign matter therein By disassembling the valve, it is possible to easily remove the foreign matter therein, the remaining condensate can be drained, and the water tank or other parts of the water generated in the boiler can also be drained through this drain portion 70 Drainage may be possible without having to install drains in all boiler parts.

On the other hand, the boiler water trap 1 of the present invention is provided with a pressure sensor on one side of the heat exchanger connector 21 to control the operation of the boiler.

The pressure sensor is provided in the protruding pipe 21a communicating with the inside of the heat exchanger connector 21 and connected to the control unit of the boiler to sense the pressure inside the water trap 1 and flows into the water trap 1. When the condensed water is frozen due to foreign substances or the temperature drop in winter, it is not closed and drained. When the water level is increased and the pressure inside is increased, the pressure sensor detects the increased pressure, and the detected signal is sent to the control part of the boiler. Transmitted to control the boiler to shut down.

This pressure sensor prevents the heat exchanger of the heat exchanger any more by blocking the operation of the boiler when the condensate is not drained smoothly, which prevents the inflow of additional condensate and prevents condensate from draining. This prevents other parts from being corroded, and can quickly check the blockage of the water trap 1 so that quick measures such as removing foreign matters can be taken.

On the other hand, the boiler water trap 1 of the present invention is the body tank 10 is further provided with a hot water supply pipe 80 passing through the inside, and a temperature sensor for sensing the temperature inside.

The hot water supply pipe 80 is to prevent the temperature decrease by passing the heating water inside the body tank 10, the heating water inlet 13 formed on one side wall of the body tank 10, and the body tank ( 10 is a pipe connecting the heating water outlet 14 formed on the bottom surface of the boiler so that the heating water passes through the body tank 10.

The temperature sensor is provided in the body tank 10 so as to sense the internal temperature of the body tank 10, preferably of the second and third partition walls provided in the body tank 10 When the temperature sensor in the body tank 10 detects a decrease in temperature, the temperature sensor transmits this signal to the boiler control unit to operate the boiler to freeze the condensed water inside the water trap 1. Before this occurs, the heating water of the boiler passes through the body tank 10 through the hot water supply pipe 80.

That is, the temperature sensor prevents the temperature decrease by allowing the temperature sensor to flow the heating water inside the body tank 10 during the temperature decrease so that the condensate inside the water trap 1 is not frozen due to the temperature decrease in the winter season. Prevents condensate from freezing and ensures good drainage.

On the other hand, the water trap 1 for the boiler of the present invention is formed with a return pipe 85 for returning the heating water to the side of the body tank 10, the return pipe 85 is penetrated through the body tank 10 The through pipe 83 is connected to the hot water supply pipe 80 is formed.

The return pipe 85 is a pipe for guiding the heating water returned from the indoor heating pipe to the water tank in the boiler. The heating return inlet 85a and the heating return water are connected to the indoor heating pipe and the heating water is returned. It consists of a heating return entrance (85b) for sending the heating water introduced from the inlet (85a) back to the heat exchanger.

The through pipe 83 is to prevent the breakage of various parts of the boiler through which the heating water is expanded by increasing the pressure of the hot water supply pipe as the temperature rises above the boiling point of the heating water. , It is formed along the lower surface of the body tank 10 by passing through the some space portion 11 of the body tank 10 is formed integrally extending from the return pipe 85 and protrudes downward to the hot water supply pipe (80) It is formed to be integrally connected with.

The through pipe 83 formed as described above allows the heating water supplied to the hot water supply pipe 80 to have a temperature higher than the boiling point so that the heated water is partially introduced into the return pipe 85 connected to the through pipe 83. By reducing the pressure it is possible to prevent the expansion of the heating water, thereby preventing damage to the boiler parts, and the through pipe 83 is formed integrally with the body tank 10, the structure is simplified, the cost can be reduced Can be.

On the other hand, the water trap 1 for the boiler of the present invention is provided with a packing 90 that is pressed and coupled between the body tank 10 and the cover 20, the lower surface of the packing formed in the body tank 10 A packing groove 91 is formed to be coupled to the fitting groove 15, and two or more protrusions 92 are formed on an upper surface of the packing 90.

The packing 90 is to increase the airtightness when the body tank 10 and the cover 20 is coupled, the packing 90 is made of a material having elasticity, such as rubber. The packing groove 91 of the packing 90 corresponds to the fitting groove 15 of the body tank 10 so that one side thereof may be inserted in close contact with the fitting groove 15 of the body tank 10 without any empty space. The other side of the packing groove 91 is formed so as to surround one side of the fitting groove 15 of the body tank 10 to be completely in close contact with the inner surface of the body tank 10.

In addition, the protrusion 92 of the packing 90 is formed to protrude on the upper surface of the packing 90 in contact with the cover 20, when the cover 20 and the body tank 10 is coupled to the protrusion 92 ) Is pressed against the inner side of the cover 20.

The packing 90 having the above shape is such that the packing groove 91 of the packing 90 is completely in contact with the fitting groove 15 of the body tank 10 when the body tank 10 and the cover 20 are combined. At the same time, as the protrusion 92 of the packing 90 is compressed by the cover, the gap between the body tank 10 and the coupling portion of the cover 20 is prevented from forming, so that the airtightness can be further improved. .

1 is a perspective view showing a water trap for a boiler according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of Figure 1;

Figure 3 is a perspective view showing a part of the body tank of Figure 1 is open.

4 is a side view of FIG. 1;

5 is a cross-sectional view of FIG.

Figure 6 is a schematic main view showing a conventional water trap used in the boiler.

7 is a schematic perspective view of main parts of the water trap according to FIG. 6;

<Detailed description of the major symbols in the drawings>

1: water trap

10: body tank

11: space

12: drain

13: heating water inlet

14: heating water outlet

15: fitting groove

16: engaging projection

20: cover

21: heat exchanger connector

21a: protrusion tube

22: water tank connector

23: coupling groove

30: neutralizing agent

40: bulkhead

41: first bulkhead

42: second bulkhead

43: third bulkhead

50: filter

51: hall

52: assembly protrusion

60: assembly groove

70: drain portion

80: hot water supply pipe

83: through tube

85: return pipe

85a: heating return inlet

85b: heating return outlet

90: packing

91: packing groove

92: packing protrusion

Claims (5)

A body tank (10) having a space (11) divided by a plurality of partition walls (40) and a drain hole (12) formed on a lower surface thereof, a heat exchanger connector (21) and a water tank connected to a heat exchanger and condensed water is introduced therein; The cover 20 is provided on the upper end of the body tank 10 having a water tank connector 22 to which the overflowed water is introduced, and a neutralizer installed in the body tank 10 to neutralize condensate ( In the water trap 1 for boiler comprising 30), The partition wall 40 includes a first partition wall 41 surrounding the heat exchanger connector 21 in which condensed water is introduced, a second partition wall 42 dividing the center of the space 11, and a drain hole through which the condensed water is discharged. (12) consisting of a third partition 43 surrounding the side, each partition is formed lower than the height of the body tank, Each of the partition walls 40 is provided with a detachable filter 50 having a hole 51 formed at one side thereof. In the filter 50 of the first and third partition walls 41 and 43, the hole 51 is positioned at the upper side, and the filter 50 of the second partition wall 42 is located at the lower side of the filter 51. Is equipped to The body tank 10 is further provided with a hot water supply pipe 80 passing through the inside, and a temperature sensor for sensing the temperature of the inside, A side of the body tank 10 is formed with a return tube 85 for returning the heating water, the return tube 85 penetrates the body tank 10 and is connected to the hot water supply pipe 80 and a through tube 83 Water trap for boiler characterized in that formed. The water trap according to claim 1, wherein the heat exchanger connector 21 is provided with a pressure sensor on one side to control the operation of the boiler. delete delete According to claim 2, The body tank 10 and the cover 20 is provided with a packing (90) is pressed and coupled therebetween, the bottom of the packing fitting groove 15 formed in the body tank (10) and The coupling groove 91 is formed, the water trap for the boiler, characterized in that two or more protrusions 92 are formed on the upper surface of the packing (90).

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