KR101390436B1 - Apparatus for venting of air for upwarding type boiler - Google Patents

Abstract

The present invention relates to an air discharge device for an upward boiler including a main body that has an inner space; a float that is put into the inner space of the main body; an upper case that covers an open upper portion of the main body; a guide that is lifted and lowered in the upper case; a seal packing that opens and closes an air discharge hole of the upper case; a spring that elastically supports a bottom surface of the guide; and a separation prevention cover that covers an upper portion of the upper case. Accordingly, the air discharge hole can be sealed with stability regardless of a fine change in water level (fluctuations) attributable, for example, to rapid water inflow during a full level and thus high sealing properties can be provided, which ultimately results in improved device reliability. Also, a fixing prevention protrusion is provided on an outer circumferential surface of the guide so that the fixing of foreign matters, which float in a case where the water level rises to the guide due to rapid water supply or the like, between the guide and the upper case can be prevented, which ultimately results in the prevention of device breakdown. In addition, the fixing prevention protrusion of the guide is lifted and lowered in close contact with the upper case so that the tilting of the guide can be forestalled, which results in an accurate and stable lifting and lowering operation.

Description

Apparatus for venting of air for upwarding type boiler}

The present invention relates to an air discharge device for a bottom-up boiler, and more particularly, an air discharge hole penetrated vertically upward, a float that is elevated in a vertical direction according to the water level corresponding to the air discharge hole, and whether the float pull force is present. The guide and the spring to elastically support the guide is provided to form a predetermined clearance between the coupling protrusion of the float and the coupling water of the guide, when the water level is lowered by the load of the float lowered The air discharge hole is pulled open and the pull-up is released by the float at the full water level, and it is raised by the repulsive force of the spring to seal the air discharge hole, and when the water level fluctuates in the full water level, the guide is still and the float floats and is stable To keep the air outlet sealed. It relates to an air discharging device for bottom-up boiler.

In general, bottom-up boilers (enclosed gas boilers, etc.) are the most widely used among heating appliances, and these bottom-up boilers have expansion tanks for absorbing the expanded heating water in the closed heating circuit, thereby regulating the pressure in the heating circuit. It is supposed to be possible.

In such a closed gas boiler, bubbles are naturally generated in the heating water in the heating circuit, which decreases the heat exchange efficiency of the heater and interferes with the heating water flowing into the conduit to prevent the circulation of the heating water. Due to the problem of lowering the heating performance such as, and the like, there is an inevitable need for an air discharge device that separates the air bubbles generated in the heating circuit from the heating water and exhausts them.

Such a bottom-up boiler air discharge device refers to a device for separating the generated bubbles into water and air by using a separator to separate the air bubbles generated in the heating water during the use of the boiler to collect only air and then discharge them to the outside.

As an example, the air discharge device of the prior art is schematically described, forming an air discharge hole toward the upper side of the housing of the air discharge device, sealing the air discharge hole with a packing, and connecting a float to the packing to increase and decrease the water level. It is a structure to open and close the air discharge hole.

In the conventional air discharge device according to such a structure, when the water level becomes full, the float rises to seal the air discharge hole with the packing, and when the water level becomes low, the float descends to open the packing to discharge the air through the air discharge hole. .

When the float is pressed downward by the air pressure in which bubbles rise and expand into the space above the float, the air may be discharged to the outside while the packing is opened by the drop of the float.

However, since the float and the packing are integrally connected to each other in the related art, when the float fluctuates when a fine water level fluctuation (water ripple, etc.) occurs due to rapid water inflow or the like, it is integral with this float. The packing is also connected to move together as a result of the unwanted opening of the air discharge hole had a problem.

The present invention has been made in order to solve this problem, and the air discharge hole penetrated vertically upward, the float corresponding to the air discharge hole in the vertical direction depending on the water level, and the lifting force depending on whether the float force A guide and a spring for elastically supporting the guide are provided, and a predetermined free space portion is formed between the engaging protrusion of the float and the engaging water portion of the guide, and when the water level is low, the air is pulled downward by the load of the descending float. The ball is opened and the pull is released due to the rise of the float at the full water level, and the air is released by the spring's repulsive force to seal the air discharge hole. To keep the airtight It is possible to stably close the air discharging hole regardless of a minute water level fluctuation (swinging) due to sudden water inflow or the like at the time of high water level, so that it is possible to provide a tight airtightness and consequently to improve the reliability of the apparatus There is provided an air exhaust apparatus for a downward boiler.

In addition, since the fixing protrusion is provided on the outer circumferential surface of the guide to prevent the floating foreign matter from sticking between the guide and the upper case when the water level rises to the guide by abrupt water supply or the like, The present invention also provides a downwardly directed air discharge device for a boiler which is capable of preventing breakdowns and the like.

Also, it is an object of the present invention to provide a downwardly directed air discharging device for a boiler, which can elevate and lower the fixing preventing protrusion of the guide in close contact with the upper case so that the guide can be prevented from tilting and the like, .

According to an aspect of the present invention, there is provided an air discharge device for a bottom-up boiler, which includes an inner space having an open upper side and a water inlet communicating with the inner space at a bottom thereof; A float which is introduced into the inner space of the main body and is lifted up and down by buoyancy of water introduced into the water inlet; An upper case covering an open upper portion of the main body and provided with an air discharge hole at one side thereof; A guide connected to the float upper end and vertically lifted and lowered in the upper case by pulling down and pulling the float down according to a water level; An airtight packing disposed on an upper surface of the guide to open and close an air discharge hole of the upper case according to the elevation of the guide; A spring which is pressed by the guide when the bottom of the float is pulled down and elastically supports the bottom of the guide and is pushed upward when the downward pull is released; And coupled to the main body in a state covering the upper portion of the upper case is configured to include a departure prevention cover for preventing the separation of the upper case.

In addition, in the bottom-up boiler air discharge device according to an embodiment of the present invention, the connection structure of the float and the guide is such that the guide flows up and down with respect to the float in a state where they are coupled to each other. It may be of structure.

In addition, in the bottom-up boiler air discharge device according to an embodiment of the present invention, the coupling protrusion is provided on the upper end of the center of the float and the coupling water portion is provided on the bottom surface of the guide corresponding thereto, the coupling protrusion is fixed to each other It is possible to be bent in the direction facing each other extending parallel to the spaced apart in the spaced apart state and a pair of protrusion pieces having a locking projection at its upper end, the coupling portion is in a state in which the coupling protrusion facing the narrow Concave groove is inserted and inserted into the original state, the through-hole is formed on the bottom surface so that the engaging projection of the upper end is caught on the inner rim, and the space is formed above the through-hole so that the engaging protrusion is elevated up and down a certain distance in the inserted state. It may be of structure.

In addition, in the bottom-up boiler air discharge device according to an embodiment of the present invention, the spring is conical shape of the lower light cooperating is disposed in the upper case, for supporting the lower end of the spring to the lower end of the upper case The spring support may be further provided.

Further, in the bottom-up boiler air discharge device according to an embodiment of the present invention, the diameter of the float is formed smaller than the diameter of the inner circumferential surface of the main body, the vertical through hole penetrating upward from the center of the bottom of the float, the vertical through The channel may be provided with a horizontal through-hole that is bent at right angles to the side at a predetermined portion of the upper end of the ball and communicates with the inside of the main body.

In addition, in the bottom-up boiler air discharge device according to an embodiment of the present invention, the plurality of horizontal through-holes of the water channel may be provided.

In addition, in the bottom-up boiler air discharge device according to an embodiment of the present invention, the removable groove portion is provided in the center of the upper surface of the guide, the removable to be detachably inserted into the removable groove portion on the bottom of the sealed packing. The protrusion may be provided.

In addition, in the bottom-up boiler air discharge device according to an embodiment of the present invention, the outer circumferential surface diameter of the guide is formed smaller than the inner diameter of the upper case, the predetermined distance apart from each other along the outer circumferential surface of the guide of the upper case A plurality of anti-sticking projections may be provided to allow the foreign matter to pass through the through portions between the inner circumferential surface and the upper circumferential sliding surface so as to prevent the foreign matter from being fixed between the outer circumferential surface of the guide and the inner circumferential surface of the upper case.

As described above, the air discharge device for a bottom-up boiler according to the present invention is an air discharge hole penetrated vertically upward, a float that is elevated in the vertical direction according to the water level corresponding to the air discharge hole, and whether or not the pull force of the float According to the present invention, the guide and the spring which elastically supports the guide are provided, and a predetermined free space is formed between the engaging protrusion of the float and the engaging water of the guide, and when the water level is low, it is held downward by the load of the descending float. When the air discharge hole is pulled out and the pulley is released by the float at the full water level, it is lifted by the repulsive force of the spring to seal the air discharge hole, and when the water level fluctuates in the full water level, the guide is still and the float is allowed to stably. By keeping the air outlet closed, In essence, it is possible to reliably seal air discharge holes regardless of minute water level fluctuations due to rapid water inflow at high water levels, to provide a tight seal, and consequently to improve the reliability of the device. Effect such as

In addition, since the fixing protrusion is provided on the outer circumferential surface of the guide to prevent the floating foreign matter from sticking between the guide and the upper case when the water level rises to the guide by abrupt water supply or the like, It is possible to prevent the occurrence of failure or the like.

Further, since the fixing protrusion of the guide is raised and lowered in a state of being in tight contact with the upper case, the inclination of the guide and the like can also be prevented beforehand, so that an accurate and stable lifting operation can be achieved.

1 is a perspective view showing an air discharge device for a bottom-up boiler according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing an air discharge device for a bottom-up boiler according to an embodiment of the present invention.
3 is a cross-sectional view showing a full water level state of the bottom-up boiler air discharge apparatus according to an embodiment of the present invention.
4 is a cross-sectional view showing a low water level of the air discharge device for the bottom-up boiler according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figures 1 to 4, the bottom-up boiler air discharge device according to an embodiment of the present invention in the main body 10, the inner space 11 is provided, and the inner space 11 of the main body 10 The float 20 to be introduced, the upper case 30 covering the open upper side of the main body 10, the guide 40 which is lifted up and down in the upper case 30, and the upper case 30. Sealing packing 50 for opening and closing the air discharge hole 31 of the spring, the spring 60 for holding the bottom of the guide 40 and the separation prevention cover for covering the upper portion of the upper case 30 ( 70) is configured to include.

The main body 10 has a multi-walled tubular structure in which an upper space 11 is opened and a water inlet 12 communicating with the inner space is formed on the bottom surface.

The float 20 is inserted into the internal space 11 of the main body 10 to perform a function of lifting up and down by buoyancy of water introduced into the water inlet 12.

The upper case 30 has a structure having a space portion 32 covering the open upper portion of the main body 10, the air discharge hole 31 is provided in the center of the upper surface and the guide 40 in the center of the bottom surface It is.

The guide 40 is connected to the upper end of the float 20 and has a function of lifting up and down in the upper case 30 by the downward pull and release of the float 20 according to the level of water level.

The sealed packing 50 is disposed on the upper surface of the guide 40 to perform the function of opening and closing the air discharge hole 31 of the upper case 30 in accordance with the lifting of the guide 40.

The spring 60 is pressed and compressed by the guide 40 when the guide 40 of the float 20 is pulled downward in a state in which the bottom of the guide 40 is elastically supported. Pressing the guide 40 upward while expanding to the original state when the downward pull is released, has a function to seal the air discharge hole 31 through the hermetic packing 50.

The departure prevention cover 70 has a cap structure penetrating the center thereof to cover the upper portion of the upper case 30 in a state in which the air discharge hole 31 of the upper case 30 is exposed upward. Coupled to (10) performs a function to prevent the departure of the upper case (30).

The connection structure of the float 20 and the guide 40 is such that the guide 40 can flow upward and downward at a predetermined interval with respect to the float 20 in a state where the float 20 and the guide 40 are coupled to each other.

Here, looking at the connection structure of the float 20 and the guide 40 in more detail, a coupling protrusion 21 is provided at the center upper end of the float 20 and coupled to the bottom surface of the guide 40 corresponding thereto. A male portion 41 is provided, but the coupling protrusion 21 extends upward in a state spaced apart from each other at a predetermined interval so as to be bent (narrowed) in a direction facing each other and a locking protrusion 21a at an upper end thereof. A pair of protruding pieces having a structure, and the coupling water portion 41 is inserted in a state in which the coupling protrusion 21 is faced and narrowed, and then inserted into the original state so that the engaging protrusion 21a of the upper end is formed on the inner edge thereof. The through hole 41a is formed on the bottom thereof so that the spaced portion 41b is formed above the through hole 41a so that the coupling protrusion 21 is moved up and down by a predetermined distance. It is.

In addition, the spring 60 has a conical shape of the lower light cooperating body and is disposed in the space 32 of the upper case 30, and supports the lower end of the spring 60 at the lower end of the upper case 30. Spring stand 33 is provided.

The diameter of the float 20 is smaller than the diameter of the inner circumferential surface of the body 10 and includes a vertical through hole 22a penetrating upward from the center of the bottom of the float 20, And a horizontal through hole 22b that is bent at right angles to a predetermined portion of the upper end of the main body 10 to communicate with the inside of the main body 10. [

Here, a plurality of horizontal through holes 22b of the water channel 22 are provided so as to extend in opposite directions and to be placed on a straight line.

A detachable protrusion 51 is formed on the bottom surface of the sealing packing 50 so as to be detachably inserted into the detachable groove 42 to be engaged with the detachable groove 50. [ And are detachably coupled to each other.

The outer circumferential surface diameter of the guide 40 is smaller than the inner circumferential surface diameter of the upper case 30, and is spaced apart from each other by a predetermined distance along the outer circumferential surface of the guide 40 to be in contact with the inner circumferential surface of the upper case 30. A plurality of anti-sticking protrusions 43 are provided to allow foreign substances to pass through the through portions of each other while sliding so as to prevent the foreign substances from being fixed between the outer circumferential surface of the guide 40 and the inner circumferential surface of the upper case 30. have.

Here, the anti-seizure projection 43 has a function to prevent the foreign matter is fixed at the same time and to prevent the guide 40 from being eccentrically inclined to one side when lifting.

In addition, a concave portion 44 is formed on a diameter facing each other of the outer peripheral surface of the guide 40, when entering into the space portion 32 of the upper case 30 enters without interference to the spring rest 33 It is supposed to be.

On the other hand, since the spring 60 is built with the guide 40 can be stretched by itself, there will be no difficulty in the input of the upper case 30 into the space 32.

A screw thread is formed on the outer circumferential surface of the upper end of the main body 10, and a screw thread is formed on the inner circumferential surface of the release preventing cover 70 corresponding to the screw thread, so that they can be screwed together.

Reference numeral 80 denotes an O-ring interposed between the main body 10 and the upper case 30.

Looking at the assembly process of the air discharge device for the bottom-up boiler according to an embodiment of the present invention according to this configuration, first, the coupling protrusion 21 and the guide 40 of the upper portion of the float 20 with the spring (60) in between. The coupling part 41 of the bottom surface is coupled to each other.

At this time, after the sealing packing 50 is mounted on the upper surface of the guide 40, the guide 40 and the spring 50 are inserted into the space 32 of the upper case 30.

Then, the spring 60 is placed on the spring rest 33 of the upper case 30, and in this state, the coupling protrusion 21 of the float 20 passes through the coupling hole 41a of the coupling water portion 41a. By passing through), the coupling protrusion 21 is inserted in a narrowed state while passing through the through hole 41a, and when the insertion is completed, it is expanded to its original state, and the engaging protrusion 21a of the upper end thereof is formed inside the through hole 41a. In this state, the engaging protrusion 21 is in a state capable of flowing up and down a predetermined distance in the space portion 41b above the through hole 41a of the coupling water portion 41.

After the float 20, the upper case 30 and the guide 40 are inserted into the inner space 11 of the main body 10, the escape prevention cover 70 is moved upward from the upper case 30, Thereby completing the assembly of the air discharge device of the present invention.

Here, between the main body 10 and the upper case 30, a waterproof can be provided through an O-ring 80.

In the air discharge apparatus of the present invention thus assembled, bubbles generated when bubbles are generated in the heated water during use of the boiler are separated into water and air by a water separator (not shown), and the air is collected into the air discharge apparatus.

Then, the air collected in this way is in a low water level, the float 20 is lowered and at the same time the guide 40 is assembled to the float 20 is lowered together at this time the sealed assembly assembled to the guide 40 While the packing 50 is also lowered together, the air is discharged to the outside while the sealed state for the air discharge hole 31 is released.

At this time, the spring 60 is in a compressed state by the guide 40 pulled downward by the lowering of the float 20.

Then, when the air is discharged more than a certain amount of water is replenished again to raise the float 20 as the water level rises to release the downward pull on the guide 40 and at the same time by the restoring force of the spring 60 again sealed packing ( 50 is pressurized upward so that the air discharge hole 31 is in a sealed state.

On the other hand, even when a minute fluctuation (water swelling) occurs in the water level due to rapid water inflow, etc. in the air discharge hole 31 is closed in this way, the guide 40 is to the elastic support of the spring (60) It is in a fixed state, and only the float 20 is blocked in the chain flow to the guide 40 while the up and down flow is made in the space portion 41b of the bottom surface of the guide 40 It is possible to maintain the sealed state of the stable air discharge hole (31).

As described above, the bottom-up boiler air discharge device according to an embodiment of the present invention includes an air discharge hole penetrated vertically upward, a float that is elevated in the vertical direction according to the water level corresponding to the air discharge hole, and whether or not the float pull force is applied. According to the present invention, the guide and the spring which elastically supports the guide are provided, and a predetermined free space is formed between the engaging protrusion of the float and the engaging water of the guide, and when the water level is low, it is held downward by the load of the descending float. When the air discharge hole is pulled out and the pulley is released by the float at the full water level, it is lifted by the repulsive force of the spring to seal the air discharge hole, and when the water level fluctuates in the full water level, the guide is still and the float is allowed to stably. By keeping the air outlet closed, In essence, it is possible to reliably seal air discharge holes regardless of minute water level fluctuations due to rapid water inflow at high water levels, to provide a tight seal, and consequently to improve the reliability of the device. In addition, by providing an anti-sticking protrusion on the outer circumferential surface of the guide, when the water level rises up to the guide due to a sudden water supply, the foreign matter can be prevented from being stuck between the guide and the upper case. It is possible to prevent the failure of the device, and also to prevent the fixing projections of the guide to be in close contact with the upper case to prevent the inclination of the guide in advance, the accurate and stable lifting operation is made will be.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It should be understood that all of the techniques that can be easily changed and used by those skilled in the art are included in the technical scope of the present invention.

10: main body 11: internal space
12: water inlet 20: float
21: engaging projection 21a: engaging projection
22: channel 22a: vertical through hole
22b: Horizontal through hole 30: Upper case
31: air discharge hole 32:
33: spring support 40: guide
41: coupling portion 41a: through hole
41b: space portion 42: removable groove portion
43: anti-sticking 44: concave
50: sealing packing 51: detachable projection
60: spring 70: separation prevention cover
80: O-ring

Claims (8)

A main body having an upper open space and having a water inlet formed therein communicating with the inner space at a bottom thereof;
A float which is introduced into the inner space of the main body and is lifted up and down by buoyancy of water introduced into the water inlet;
An upper case covering an open upper portion of the main body and provided with an air discharge hole at one side thereof;
A guide connected to the float upper end and vertically lifted and lowered in the upper case by pulling down and pulling the float down according to a water level;
A sealing packing disposed on an upper surface of the guide and opening and closing the air vent hole of the upper case according to the lifting and lowering of the guide;
A spring which is pressed by the guide when the bottom of the float is pulled down and elastically supports the bottom of the guide and is pushed upward when the downward pull is released; And
A release preventing cover coupled to the main body in a state of covering the upper case to prevent the upper case from being separated from the main body;
Air discharge device for a bottom-up boiler comprising a. The method of claim 1,
Wherein the connection structure of the float and the guide is structured such that the guide is allowed to flow upward and downward with respect to the float in a state where the float and the guide are coupled to each other. 3. The method of claim 2,
A coupling protrusion is provided at a central upper end portion of the float and a coupling water portion is provided at a bottom surface of the guide corresponding thereto,
The coupling protrusions may have a pair of protruded piece structures extending parallel to each other and spaced apart from each other by a predetermined distance so as to be able to bend in directions opposite to each other,
The coupling water portion is inserted in the state in which the coupling protrusions are faced and narrowed and inserted into the original state so that a through hole is formed at the bottom thereof so that the locking protrusion at the upper end thereof is caught by the inner rim, and a space portion is formed above the through hole. A bottom-up boiler air discharge device, characterized in that the concave groove structure to be elevated up and down a certain distance in the state where the protrusion is inserted. The method of claim 1,
The spring is conical shape of the lower light bark and disposed in the upper case,
Upward boiler air discharge device characterized in that the bottom portion of the upper case is further provided with a spring support for supporting the lower end of the spring. The method of claim 1,
Wherein a diameter of the float is smaller than a diameter of an inner circumferential surface of the main body and is perpendicularly penetrated from the center of the bottom of the float to an upper portion of the float, Wherein the air outlet is provided with an air passage. 6. The method of claim 5,
The horizontal through-hole of the water channel is a bottom-up boiler air discharge device characterized in that a plurality is provided. The method of claim 1,
Wherein a guide groove is formed at the center of the upper surface of the guide,
Wherein a detachable protrusion is provided on a bottom surface of the hermetically sealed packing so as to be detachably inserted into the detachable recess. The method of claim 1,
Wherein the guide is formed to have a diameter smaller than an inner circumferential surface of the upper case and is spaced apart from the outer circumferential surface of the guide by a predetermined distance so as to abut the inner circumferential surface of the upper case to slide up and down, Wherein a plurality of fixing preventing projections are provided to prevent foreign matter from being fixed between the outer circumferential surface of the guide and the inner circumferential surface of the upper case.

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