GB2514637A - Water filling device with air gap forming unit - Google Patents
Water filling device with air gap forming unit Download PDFInfo
- Publication number
- GB2514637A GB2514637A GB1401121.7A GB201401121A GB2514637A GB 2514637 A GB2514637 A GB 2514637A GB 201401121 A GB201401121 A GB 201401121A GB 2514637 A GB2514637 A GB 2514637A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- water
- water filling
- filling pipe
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 249
- 239000008236 heating water Substances 0.000 claims abstract description 68
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000008400 supply water Substances 0.000 claims description 7
- 206010016334 Feeling hot Diseases 0.000 claims 1
- 238000011109 contamination Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1083—Filling valves or arrangements for filling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/265—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a sleeve sliding in the direction of the flow line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/445—Mechanical actuating means with exterior sleeve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
A water filling device comprises a water filling pipe 10 connected between a heating water pipe (1, fig 1) of a heating circuit of a boiler and a domestic water pipe (2), The filling pipe includes a passageway therein and at least one through-hole 13 and a means for selectively opening or closing the at least one through-hole of the filling pipe. In a closed position (figs 1 & 2) the passageway of the filling pipe communicates with the domestic water pipe and the heating water pipe supplies water from the domestic water pipe to the heating water pipe. In an open position (fig 3) the at least one through-hole of the filling pipe is open to atmosphere and an air gap is formed in the passageway of the filling pipe that separates the domestic water pipe and the heating water pipe. The air gap prevents domestic water from contamination due to reversed flow from the heating circuit. The opening or closing means may comprise of a shutter / sleeve closing mechanism 20 or a ball valve closing mechanism (120, fig 6). The filling pipe may comprise at least one check valve 11, 12 (111, 112).
Description
TITLE
Water filling device with air gap forming unit
DESCRIPTIOM
Technical Field
The present invention relates to a water filling device with an air gap forming unit for use with a boiler and which is used for supplying water from a domestic water pipe to a heating circuit. The air gap forming unit prevents domestic water from beingcontaminatedduetoreversedflowfromtheheatingcircuit.
Background Art
FIG. 10 is a circuit diagram showing a conventional boiler with heatinganddomestichotwater functions, andFIG. ilisacircuit diagram showing a conventional boiler with a heating function only.
As shown in FIGS. 10 and 11, the conventional boilers 100 and are designed in such a way that the burner heats a heat exchanger (labelled heat exchangerU) . Heat transfers to the water passing through the heat exchanger so that the heating waterflowsintoareaslo2arid2o2tobewarmed. Inparticular, water is circulated from the heat exchanger to the areas 102 and 202 along a heating water supply and from the areas 102 and2O2 backto theheat exchanger alongaheatingwater return.
The heating water passes through a heating water pipe 1 and 201 which form part of a heating circuit of the boiler.
AsshowninFlG. 10, theconventionalboilerlOOwithadomestic hot water function is designed to further include a domestic water pipe 2 that allows inflowing domestic cold water (e.g., from the mains supply) to be rapidly heated in a second heat exchanger (labelled!heat exchanger2' ) by heat energy from the heating water flowing through the heating water pipe 3.
The domestic hot water that flows out of the second heat exchanger can be used for sanitary purposes.
After the boiler 100 and 200 has been operated for a relatively long period of time, the amount of water in the heating water circuit will typically be reduced and the heating water pipe 1 and 201 needs to be filled with water from the domestic water pipe 2 and 203.
To this end, the conventional boilers 100 and 200 are provided with a water filling pipe, illustrated as a dotted circle, for connecting the domestic water pipes 2 and 203 and the heating water pipes land2Ol, respectively. However, the fillingpipe must be disconnected except when it is used to fill or replenish the heating water pipe 1 and 201 with water, thereby preventing heating water from flowing out from the heating water pipe 1 and 201 to the domestic water pipe 2 and 203.
A conventional water filling pipe is typically provided with an on-off valve or a check valve to prevent heating water from flowing backward. It is preferable to separate the heating water pipe and the domestic water pipe except for filling or replenishing the heating water pipes 1 and 201 with water.
In many countries, including the United Kingdom, an additional pipe or line can be installed to the boiler to fill or replenish the heating water pipe with water and then separated therefrom afterwards. This, however, inconveniences users and requires a great deal time to complete the job each time.
Another conventional water filling device was described in Korean Patent Publication No. 10-1992-0020155, titled
AUTOMATIC WATER FILLING DEVICE WITH SEALED EXPANSION TANK FOR
FORCEDLY WARMED-WATER CIRCULACION TYPE BOILER.
Summary of the Invention
The present invention has been made in view of the above problems, and provides a water filling device for a boiler that can connect the heating water pipe and the domestic water pipe via a water fillinqpipewhenitisnecessarytofillorreplenishtheheatinq circuit from the domestic water pipe, and to separate them from each cther after this has been completed by forming an air gap in the water filling pipe.
The present invention provides a water filling device comprising: a water filling pipe connectable in use between a heating water pipe of a heating circuit of a boiler and a domestic water pipe, wherein the water filling pipe includes a passageway therein and at least one through-hole; and means forselectivelyopeningorclosingtheatleastonethrough-hole of the water filling pipe, wherein when the means is in a closed position the passageway of the water filling pipe communicates with the domestic water pipe and the heating water pipe to supply water from the domestic water pipe to the heating water pipe, and when the means is in an open position the at least one through-hole of the water filling pipe is cpen to atmosphere and an air gap is formed in the passageway of the water filling pipe that separates the domestic water pipe and the heating water pipe.
In accordance with a first exemplary embodiment of the present invention, the means comprises: a shutter surrounding an outer surface of the water filling pipe and adapted to slide thereon in an axial direction within a preset distance range to selectively open or close the at least one through-hole of the water filling pipe; and 0-rings positioned between the outer surface of the water filling pipe and an inner wall of the shutter.
When the shutter is in a closed position, the passageway of the water filling pipe communicates with the domestic water pipe and the heating water pipe to supply water from the domestic water pipe to the heating water pipe. When the shutter is in an open position, the at least one through-hole of the water filling pipe is open to atmosphere and an air gap is formed in the passageway of the water filling pipe that separates the domestic water pipe and the heating water pipe.
The water filling pipe can include a threaded hole in the outer surface close to each opposite end of the water filling pipe for receiving a bolt. The shutter can include a hole close to each opposite end of the shutter for receiving the bolt. The bolt can be inserted through one of the holes in the shutter and into an aligned one of the threadedholes in the water filling pipe to thereby fix the shutter to the water filling pipe.
Tnaccordancewithasecondexemplaryembodimentoftheinvention, the means comprises: a ball valve for selectively opening or closing the at least one through-hole of the filling pipe, the ball valve comprising: valve seats, a ball positioned between the valve seats, and rotation means for turning the ball relative to the valve seats. When the ball valve is in a closed position, the passagewayof the water fillingpipe communicates with the domestic water pipe and the heating water pipe to supply water from the domestic water pipe to the heating water pipe.
When the ball valve is in an open position, the at least one through-hole of the water filling pipe is open to atmosphere and an air gap is formed in the passageway of the water filling pipe that separates the domestic water pipe and the heating water pipe.
Theballcanincludeathrough-hoiepassagewaythatcommunicates with the passageway of the water filling pipe when the ball valve is in the closed position and with the at least one through-hole of the water filling pipe when the ball valve is in the open position. The at least one through-hole of the water filling pipe can be closed by the ball when the ball valve is in the closed position.
Preferably, the rotation lever is detachably installed to a rotation shaft of the ball and includes a straight locking bar at the lower end for transferring rotational force to the rotation shaft. The rotation shaft forms a slot for receiving the straight locking bar.
The rotation lever and the water filling pipe can be tied to each other with a cord.
Preferably, the water filling pipe may further include at least one checkvalve inthepassageway, eachcheckvalvebeing located at a certain position.
Drawings The features and advantages of the invention will become more apparent from the following detailed description viewed in conjunction with the accompanying drawings, in which: FIG. 1 is a perspective view showing a first embodiment of a water filling device with an air gap forming unit according to the present invention, where the through-hole of the device is closed by the shutter; FIG. 2 is a cross-sectional view of the water filling device shown in FIG. 1; FIG. 3 is a perspective view of the water filling device shown in FIGS. 1 and 2, where the through-hole of the device is not closed by the shutter and is open to atmosphere; FIG. 4 is a cross-sectional view of the water filling device shown in FIG. 3; FIG. 5 is a side view showing a second embodiment of a water filling device with an air gap forming unit according to the present invention, where the through-hole is closed by the ball valve; FIG. 6 is a cross-sectional view of the water filling device shown in FIG. 5; FIG. 7 is a perspective view of the water filling device shown in FIGS. 5 and 6, where the through-hole is not closed by the ball valve and is open to atmosphere; FIG. 8 is a cross-sectional view of the water filling device shown in FIG. 7, where thepositionofa rotation knob is changed; FIG. 9 is a perspective view showing a third embodiment of a water filling device with an air gap forming unit according to the present invention, where opposite ends of the water filling device are bent; FIG. 10 is a circuit diagram showing a conventional boiler with a water-heating and a domestic hot water function; and FIG. 11 is a circuit diagram showing a conventional boiler with a water-heating function only.
Hereinafter, exemplary embodiments of the water filling device with an air gap forming unit according to the invention are described in detailwith reference to the accompanyingdrawings As shown in FIGS. 1 to 4, a first embodiment of a water filling device with an air gap forming unit is designed to include a water filling pipe 10 and a shutter (or sleeve) 20. The water filling pipe 10 is shaped as a hollow cylinder, with at least one through-hole 13 therein at a certain axial position. In practice, a series of through-holes 13 are provided around the circumferenceofthewaterfillingpipeloattheaxialposition.
The shutter 20 surrounds the outer surface of the water filling pipe 10 and can slidably move thereon along the axial direction to selectively open or close the through-holes 13.
The water filling pipe 10 is connected between the end of a heating water pipe 1 which is connected to the heating water circuit (orheatingcircuit) ofaboilerandtheendofadomestic water pipe 2, e.g., using a threaded connection.
The water filling pipe 10 includes two check valves 11 and 12 therein for allowing water to flow only in the direction from the domestic water pipe 2 to the heating water pipe 1. The through-holes 13 are positioned above the head of the check valve 12 (i.e., between the check valve 12 and the end that is connected to the domestic water pipe so that it is upstream of the check valve) and provides an opening for communicating the inside space 30 of the water filling pipe 10 to atmosphere.
The water filling pipe 10 includes C-rings 14 on the outer surface, respectively located close to the axial edges of the through-holes 13 such that the through-holes 13 are axially positioned between the c-rings 14.
The water filling pipe 10 includes threaded holes 16 and 17 on the cuter surface close to the cpposite ends of the water filling pipe 10 for receiving a bolt 2 passing though the body of the shutter 20. The threaded holes 16 and 17 are spaced apart by a distance within which the shutter 20 can be slidably mcved.
When a bolt 25 is engaged with one of the threaded holes 16 and 17, the shutter 20 is fixed to the water filling pipe 10.
The shutter 20 is shaped as a hollow cylinder for surrounding the circumference of the water filling pipe 10, and can slide along the axial direction within a preset distance. The shutter includes a number of circumferential grooves 21 on its outer surface. The shutter 20 also includes a series of openings 29 around the circumference of the shutter close to one end.
The shutter 20 includes holes 23 and 24 close to its opposite ends for receiving the bolt 25. When the bolt 25 is engaged with the threaded hole 16 or 17 of the water filling pipe 10, passing through the hole 23 or 24, the shutter 20 is fixed to the water filling pipe 10 and unintended sliding is prevented.
Slidingtheshutter2oopensorcloses (i.e., coversoruncovers) the through-holes 13 of the water filling pipe 10.
The operation of the first embodiment of the water filling device is described as follows.
The water filling pipe 10 is engaged with the end of the heating water pipe 1 at a first end and the end of the domestic water pipe 2 at a second end.
In order to fill or replenish the heating water pipe 1 with water, the shntter 20 is moved to the second end of the water filling pipe 10 to surronnd the throngh-hoies 13 of the water filling pipe 10. In other words, the shutter is at a closed position shown in FIGS. 1 and 2 where the openings 29 in the shutter 20 are not axially aligned with the through-holes 13 in the water filling pipe 10. In the closed position, the bolt is engaged with the threaded hole 16 of the water filling pipe 10, passing through the hole 23, so that the shutter 20 is fixed to the water filling pipe 10 at the second end and unintentional movement of the shutter 20 is prevented. Since the shutter 20 surrounds and covers the through-holes 13, and the space between the water filling pipe 10 and the shutter 20, with respect to both ends of the through-holes 13, is sealed by the pair of 0-rings 14, the through-holes 13 are completely isolated from atmosphere. As shown in FIGS. 1 and 2, when water is supplied from the domestic water pipe 2 to the second end ofthewaterfillingpipel0, it flows throughthewater filling pipe 10 to the heating water pipe 1 without leakage.
After the filling or replenishment of water to the heating water pipe 1 has been completed, the bolt 25 is removed from the threaded hole 16 at the second end of the water filling pipe 10 so that the shutter 20 can be moved to the first end of the water filling pipe 10. when the shutter 10 is in an open position shown in FIGS. 3 and 4, the openings 29 in the shutter 20 are axially aligned with the through-holes 13 in the water filling pipe 10 so rhat the through-holes 13 are nolongersurroundedorooveredbytheshutter2oandareinstead opentoatmosphere. Intheopenposition, thebolt2fisengaged with the threaded hole 17 passing through the hole 24 of the shutter 20, as shown in FIGS. 3 and 4.
Because the through-holes 13 are open to atmosphere through the openings 29 in the shutter 10, water is discharged to the outside from the space between the check valve 12 and an on-off valve (not shown) of the domestic water pipe 2. Therefore, the space between the check valve 12 and the on-off valve (not shown) is emptied of water, thereby forming an air gap. The formation of an air gap in the water filling pipe 10 creates the same effect as a physical separation between the heating water pipe 1 and the domestic water pipe 2, which prevents reversed flow of water from the heating water pipe 1 to the domestic water pipe 2.
As shown in FIGS. 5 to 8, a second embodiment of a water filling device with an air gap forming unit is designed to include a water filling pipe 110 and a ball valve 120 installed in the water filling pipe 110. The water filling pipe 110 includes a through-hole 113 and check valves 111 and 112 at corresponding positions therein.
The water filling pipe 110 is shaped as a hollow cylinder and is connected between the end of a heating water pipe 1 which is connected to the heating water circuit(or heating circuit) of a boiler and the end of a domestic water pipe 2, e.g., using a threaded connection.
The two check valves 111 and 112 in the water filling pipe 110 allow water to flow only in the direction from the domestic water pipe 2 to the heating water pipe 1.
Thewaterfillingpipell0includesathrough-holell3positioned above the head of the check valve 112 (i.e., between the check valve 112 and the end that is connected to the domestic water pipe so that it is upstream of the check valve) and provides an opening for communicating The inside space of the water filling pipe 110 to atmosphere.
The ball valve 120 is formed to the inner wall of the through-hole 113. The ball valve 120 includes valve seats 121 at both sides of the through-hole 113, a ball 123 between the seats 121, and a rotation lever (or knob) 126 for turning the ball 123 relative to the seats 121. When the ball valve 120 is turned to a closed position, a through-hole passageway 124 of the ball 123 communicates with the passageway of the water filling pipe 110, so that water can flow into the water filling pipe 110. On the contrary, when the ball valve 120 is turned to anopenposition, theoutersurfaceoftheballl23sealsagainst the seats 121, so that water cannot flow into the water filling pipe 110. In the open position, the through-hole passageway 124 of the ball 123 also communicates with the through-hole 113 of the water filling pipe 110. As such, the ball valve can close or open the through-hole 113 of the water filling pipe 110.
The rotation lever 126 is detachably installed to a rotation shaft 130 of the ball 123. The lever 126 is designed in such a way that a straight locking bar 127 is formed at the lower end for transferring rotational force to the rotarion shaft 130, and the rotation angle of the lever 126 is limited. The rotation shaft 130 includes a slot 131 for receiving the straight locking bar 127. The water filling pipe 110 includes a support 116 for coupling the rotation lever 126. The support 116 includes a protrusion 117 for limiting the rotation angle of the rotation lever 126 by contacting surfaces 128 and 130 of the lever 126. The rotation lever 126 includes a hole 129 at one side for connecting one end of a cord 140. The support 116 of the water filling pipe 110 includes a hole 118 at one side for connecting the other end of the cord 140. The cord serves to tie the rotation lever 126 to the water filling S pipe 110, thereby preventing it from being lost when it is removed.
The operation of the second embodiment of the water filling device is described as follows.
When water needs to be supplied from the domestic water pipe 2 to the heating water pipe 1, the rotation lever 126 is turned in one direction until the surface 128 of the rotarion lever 126 comes into contact with one side of the protrusion 117 of the support 116. In this closed position, the through-hole passageway 124 of the ball 123 communicates with the passageway of the water filling pipe 110. Water flows in through the through-hole passageway 124 from the domestic water pipe 2 to the heating water pipe 1, as shown in FIGS. 5 and 6. During this process, as shown in FIG. 5, the through-hole 113 of the water filling pipe 110 is sealed by the outer surface of the ball 123.
After the fill or replenishment of water to the heating water pipe 1 has been completed, the rotation lever 126 is turned in the other direction until the surface 130 of the rotation lever 126 comes into contact with the other side of the protrusion 117 of the support 118 and the seat 121 is sealed by the outer surface of the ball 123, thereby olosing the passageway of the water filling pipe 110, as shown in FIGS. 7 and 8. Since the through-hole passageway 124 of the ball 123 communicates with the through-hole 113 of the water filling pipe 110 in this open position, the water in the through-hole passageway 124 is discharged to the outside through the through-hole 113, thereby forming an air gap in the ball valve 120. Even if water leaks through the check valves 111 and 112 because of a variety of causes such as a failure of the check valves 111 and 112, it is discharged to the outside by the air gap. That is, the air gap formed in the water filling pipe 110 can prevent water from flowing backward from the heating water pipe 1 to the domestic water pipe 2.
In order to prevent an existing air gap from being removed from the water filling pipe 110 by faults such as a faulty operation of rotation lever 126, the rotation lever 126 may be separated from the rotation shaft 130 of the ball valve 120. Since the lever 126 is tied to the hole 118 of the support 116 with the cord 140, it cannot be lost.
Asdescribedabove, after water has been filled or replenished from the domestic water pipe 2 to the heating water pipe 1 via the water filling pipe 10 or 110, the water filling device according to the invention forms an air gap in the water filling pipe 10 or 110 that can prevent water from flowing backward to the domestic water pipe 2. This provides user convenience because users do not need to physically separate the pipe 10 or 110 from the heating water pipe 1 and/or the domestic water pipe 2.
FIG. 9 is a perspective view showing a third embodiment of a water filling device with an air gap forming unit according to the present invention.
As shown in FIG. 9, the water filling device is designed to include a water filling pipe 210 with a through-hole 213 and a ball valve 220 with a rotation lever 226 installed in the water filling pipe 210. The water filling pipe 210 includes a through-hole 213 and check valves (not shown) at corresponding positions therein. The opposite ends of the water filling pipe 210 are bent. This water filling device is useful where a heating water pipe (not shown) and a domestic water pipe (not shown) are set in parallel.
As described above, the water filling device according to the present invention can form an air gap in the water filling pipe, through which the heating water pipe and the domestic water pipe are connected to each other, after completing the fill or replenishment of water to the heating water pipe. The air gap separates the heating water pipe and the domestic water pipe. Therefore, althoughheatingwatermayleakfromtheheating water pipe and flow into the water filling pipe, it can be dischargedtotheoutsidebytheairgap. Thus, thewaterfilling device can completely prevent heating water from flowing backward to the domestic water pipe from the heating water pipe and contamination of domestic water is prevented.
Claims (8)
- CLAIMS1. A water filling device comprising: awater filling pipe connectable in use between a heating water pipe of a heating circuit of a boiler and a domestic water pipe, wherein the water filling pipe includes a passageway therein and at least one through-hole; and means for selectively opening or closing the at least one through-hole of the water filling pipe, wherein when the means is ma closed position the passageway of the water filling pipe communicates with the domestic water pipe and the heating water pipe to supply water from the domestic water pipe to the heating water pipe, and when the means is in an open position the at least one through-hole of the water filling pipe is open to atmosphere and an air gap is formed in the passageway of the water filling pipe that separates the domestic water pipe and the heating water pipe.
- 2. A water filling device according to claim 1, wherein the means comprises: ashuttersurroundinganoutersurfaceofthewaterfilling pipe and adapted to slide thereon in an axial direction within a preset distance range to selectively open or close the at least one through-hole of the water filling pipe; and 0-rings positioned between the outer surface of the water filling pipe and an inner wall of the shutter; wherein: when the shutter is in a closed position, the passageway of the water filling pipe communicates with the domestic water pipe and the heating water pipe to supply water from the domestic water pipe to the heating water pipe; and when the shutter is in an open position, the at least one through-hole of the water filling pipe is open to atmosphere and an air gap is formed in the passageway of the water filling pipe that separates the domestic water pipe and the heating water pipe.
- 3. A water filling device according to claim 2, wherein: the water filling pipe includes a threaded hole in the outer surface close to each opposite end of the water filling pipe for receiving a bolt; and the shutter includes a hole close to each opposite end of the shutter for receiving the bolt, wherein the bolt is inserted through one of the hotes in the shutter and into an aligned one of the threaded holes in the water filling pipe to thereby fix the shutter to the water filling pipe.
- 4. A water filling device according to claim 1, wherein the means comprises: a ball valve for selectively opening or closing the at least one through-hole of the filling pipe, the ball valve comprising: valve seats, a ball positioned between the valve seats, and rotationmeans for turning theball relative to the valve seats, wherein: when the ball valve is in a closed position, the passageway of the water filling pipe communicates with the domestic water pipe and the heating water pipe to supply water from the domestic water pipe to the heating water pipe; and when the ball valve is in an open position, the at least one through-hole of the water filling pipe is open to atmosphere and an air gap is formed in the passageway of the water filling pipe that separates the domestic water pipe and the heating water pipe.
- 5. A water filling device according to claim 4, wherein the ball includes a through-hole passageway that communicates with the passageway of the water filling pipe when the ball valve is in the closed position and with the at least one through-hole of the water filling pipe when the ball valve is in the open position.
- 6. A water filling device according to claim 4 or claim 5, wherein the at least one through-hole of the water filling pipe is closed by the ball when the ball valve is In the closed position.
- 7. A water filling device according to any of claims 4 to 6, wherein the rotation means is detachably installed to a rotation shaft of the ball and includes a straight locking bar at the lower end for transferring rotational force to the rotation shaft, wherein the rotation shaft of the ball includes a slot for receiving the straight locking bar, and wherein the rotation means and the water filling pipe are tied to each other with a cord.
- 8. A water filling device according to any preceding claim, wherein the water filling pipe further comprises at least one check valve in the passageway.AMENDMENTS TO CLAIMS HAVE BEEN FILED AS FOLLOWSCLAIMS1. A water filling device comprising: a water filling pipe connectable in use between a heating water pipe of a heating circuit of a boiler and a domestic water pipe, wherein the water filling pipe includes a passageway therein and at least one through-hole; and a ball valve for selectively opening or closing the at leastonethrough-holeofthewaterfillingpipe, theballvalve comprising: valve seats, a ball positioned between the valve seats, and rotation means for turning the ball relative to S....Sthe valve seats, S...wherein when the ball valve is in a closed position the * 15 passageway of the water filling pipe communicates with the domestic water pipe and the heating water pipe to supply water *SS from the domestic water pipe to the heating water pipe, and when the ball valve is in an open position the at least one through-hole of the water filling pipe is open to atmosphere and an air gap is formed in the passageway of the water filling pipe that separates the domestic water pipe and the heating water pipe.2. A water filling device according to claim 1, wherein the ball includes a through-hole passageway that communicates with the passageway of the water filling pipe when the ball valve is in the closed position and with the at least one through-hole of the water filling pipe when the ball valve is in the open position.3. A water filling device according to claim 1 or claim 2, wherein the at least one through-hole of the water filling pipe is closed by the ball when the ball valve is in the closed position.4. A water filling device according to any preceding claim, * whereintherotationmeansisdetachablyinstalledtoarotation ***.* shaft of the ball and includes a straight locking bar at the * ** lower end for transferring rotational force to the rotation p.....* 15 shaft, wherein the rotation shaft of the ball includes a slot ** forreceivingthestraightlockingbar, andwhereintherotation * 0.means and the water filling pipe are tied to each other with a cord.5. A water filling device according to any preceding claim, wherein the water filling pipe further comprises at least one check valve in the passageway.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20130061239 | 2013-05-29 | ||
| KR1020130149948A KR20140140473A (en) | 2013-05-29 | 2013-12-04 | water filling device with air gap making means of heating water closed circuit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201401121D0 GB201401121D0 (en) | 2014-03-12 |
| GB2514637A true GB2514637A (en) | 2014-12-03 |
| GB2514637B GB2514637B (en) | 2016-03-09 |
Family
ID=50287434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1401121.7A Expired - Fee Related GB2514637B (en) | 2013-05-29 | 2014-01-23 | Water filling device with air gap forming unit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2514637B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985137B (en) * | 2019-11-04 | 2022-06-10 | 中国能源建设集团华东电力试验研究院有限公司 | 660MW supercritical unit water supply system steam flow balance control device and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996006308A1 (en) * | 1994-08-23 | 1996-02-29 | Euro Innovations Limited | A valve |
| WO1997045680A1 (en) * | 1996-05-25 | 1997-12-04 | Euro Innovations Limited | Improvements in and relating to a valve |
-
2014
- 2014-01-23 GB GB1401121.7A patent/GB2514637B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996006308A1 (en) * | 1994-08-23 | 1996-02-29 | Euro Innovations Limited | A valve |
| WO1997045680A1 (en) * | 1996-05-25 | 1997-12-04 | Euro Innovations Limited | Improvements in and relating to a valve |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201401121D0 (en) | 2014-03-12 |
| GB2514637B (en) | 2016-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20180123 |