CA1283838C - Mixing bibcock - Google Patents
Mixing bibcockInfo
- Publication number
- CA1283838C CA1283838C CA000552647A CA552647A CA1283838C CA 1283838 C CA1283838 C CA 1283838C CA 000552647 A CA000552647 A CA 000552647A CA 552647 A CA552647 A CA 552647A CA 1283838 C CA1283838 C CA 1283838C
- Authority
- CA
- Canada
- Prior art keywords
- plate valve
- movable plate
- valve
- cold water
- hot water
- 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.)
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Abstract
ABSTRACT OF THE DISCLOSURE
The present invention relates to a mixing bibcock hav-ing a valve mechanism for individually supplying hot water, cold water, or a mixture thereof of a desired temperature by adjust-ment of a combination of a fixed plate valve and a movable valve which are formed from ceramics, said mixing bibcock comprising: a plate valve unit in which a cold water inlet port, a hot water inlet port, and an outlet respectively provided in said fixed plate valve as to penetrate said plate valve to connect the top surface thereof to the bottom surface thereof, and in which a recessed guide groove is provided in the form of a blind hole in an abutting surface of said movable plate valve; a main mixing valve body having a valve chamber in which said fixed plate valve and said movable plate valve are inserted with abutting surfaces and thereof facing each other; an operating means by which said movable plate valve and a lever are linked through a handle shaft and a boss in such a manner that force can be transmitted therethrough, wherein a suitable quantity of hot water and cold water can be individually supplied, or a mixture of a suitable temperature can be supplied by turning said lever horizontally.
The present invention relates to a mixing bibcock hav-ing a valve mechanism for individually supplying hot water, cold water, or a mixture thereof of a desired temperature by adjust-ment of a combination of a fixed plate valve and a movable valve which are formed from ceramics, said mixing bibcock comprising: a plate valve unit in which a cold water inlet port, a hot water inlet port, and an outlet respectively provided in said fixed plate valve as to penetrate said plate valve to connect the top surface thereof to the bottom surface thereof, and in which a recessed guide groove is provided in the form of a blind hole in an abutting surface of said movable plate valve; a main mixing valve body having a valve chamber in which said fixed plate valve and said movable plate valve are inserted with abutting surfaces and thereof facing each other; an operating means by which said movable plate valve and a lever are linked through a handle shaft and a boss in such a manner that force can be transmitted therethrough, wherein a suitable quantity of hot water and cold water can be individually supplied, or a mixture of a suitable temperature can be supplied by turning said lever horizontally.
Description
3~
Thls Inventlon relates to a ceramlc plate valve of a cold water and hot water mlx~ng blbcock for sanltary use, and an Improvement In Its operatlng method.
The present Inventlon wlll be Illustrated by way of the accompanylng drawlngs, In whlch:-Flg. 1 Is a vertlcal slde vlew of a mlxlng blbcockaccordlng to the present Inventlon;
Flg. 2(A) Is an exploded plan vlew of a movable plate valve of the mlxlng blbcock accordlng to the present Inventlon;
Fig. 3(A) Is an exploded vertlcal cross-sectlonal vlew of the operatlng mechanlsm o~ the present Inventlon;
Flg. 3(B) Is an exploded plan cross-sectlonal vlew taken along the llne Y-Y of Flg. 3(A);
Flg. 4(A~ Is a vlew Illustratlng the relatlonshlp between a lever and a posltlon at whlch water Is stopped;
Flg. 4(B) Is a vlew Illustratlng the relatlonshlP
between the lever and the mlxlng ratlo of hot water and cold water and temperature adJustment;
Flg. 5(A) Is a vlew Illustratlng the relatlonshlp between the lever and a status of a full flow of hot water and a status of a ~UII flow of cold alone;
Flg. 6 Is a plan vlew, from whlch part Is omltted, of the mlxlng blbcock, Illustratlng the relatlonshlp between the blbcock and the lever; and Flg.s 7 and 8 are vlews Illustratlng a conventlonal blbcock In whlah the proce~ure of operatlng the lever vertlcally ~!~
and horlzontally Is Illustrated.
A conventlonal valve mechanlsm havlng a palr of ceramlc plate valves whlch are Installed In a valYe chamber of a mlxlng blbcock Is shown In Fl9.s 1 and 6 (Flg.s 7 and ~ of the present Inventlon) of Japanese Patent Publlcatlon No. 37179/1981.
The valve mechanlsm shown In Flg.s 7 and 8 wlll now be brlefly descrlbed.
A movable plate valve 40 has a mlxlng chamber 41 shaped as a downward'~faclng blInd hole. The movable plate valve 40 Is placed on top of a fIxed plate valve 42. A hot water Inlet port 43 and a cold water Inlet port 44 are adapted to be freely opened and closed, and are always connected to an outlet 4~. The hot water Inlet port 43 and the cold water Inlet port 44 are closed when a lever 46 Is posltloned as shown by the solId llnes. Hot water and cold water 3 ~
are discharged in equal quantities when the lever 46 is pushed down to the horizontal position shown by the alternate long and two short dashes line. Hot water is discharged when the lever 46 is turned horizontally to the left. Cold water is discharged when the lever 46 is turned horizontally to the right. The water is stopped when the lever 46 is restored to the central position and is tilted up.
The movable plate valve 40, which is connected to the lever 46 by the valve shaft 47, moves backwards and forwards along a guide portion 49 connected to a guide groove 48 that is provided in the fixed plate valve 42 for the purpose of discharging or stopping the hot water and cold water. However, this structure has a problem in that the valve mechanism is not easy for children or people with handicapped hands to operate, and errors in operation tend to occur because the discharge and stopping of the hot water and cold water is carried out by moving the lever vertically, and the discharge of hot water and cold water, either separately or together is carried by moving the lever horizontally. Furthermore, when the hot water inlet port is fully open, the water flow rate rapidly decreases. As a result, the temperature of the hot water must be adjusted whenever the hot water inlet port is fully open.
The mechanism of the connection between the fi~ed plate valve and the valve shaft is excessively complicated, because the movable plate valve is adapted to both turn and reciprocate. As a result, the number of parts is increased, and assembly and disassembly when a problem occurs is complicated, which adversely affects maintenance and productivity.
Thus, individual supply of hot water and cold water, and -the mixture, temperature adjustment, supply and stoppage of water, can be only conducted by horizontally turning the lever so as to move the movable plate valve which opens and closes the valve mechanism. The mechanism of the connection between the lever and the movable plate valve is slmplified by the present invention, to ensure easy operation, prevent operating errors, and simplify maintenance.
According to the present invention there is provided a mixing bibcock having a valve mechanism for individually supplying hot water, cold water, or a mixture thereof at a desired temperature, said mixing bibcock comprising: a fixed plate valve having a cold water inlet port, a hot water inlet port, and an outlet port, said ports all extending through said fixed plate valve to connect the top surface thereof to the bottom surface thereof; a movable plate valve having a recessed water guide groove in the form of a blind hole in one surface thereof; a main mixing valve body having a valve chamber therein in which said fixed plate valve and said movable plate valve are positioned with the one surface of said movable plate valve abutting one surface of said fixed plate valve and with said recessed water guide groove always in communication with said outlet port in all positions of movemen-t of said movable plate valve on the abutting surface of said fixed plate valve; an operating means connected to said movable plate valve for reciprocally turning said movable plate valve in a plane on the abutting surface of said fixed plate -~ ~ ~3 ~
valve between a middle position which is between said two inlet ports and two end positions on opposite sides of said middle position which are respectively toward said cold water inlet port and said hot water inlet port; said recessed water guide groove having a first branch extending generally ra~ially outwardly of said movable pla-te v~lve and when said mova~le plate valve ls in said middle posi-tion, lying between said inlet ports and being movable toward said inlet ports for gradually uncovering the respective inl~t ports as said movable plate valve is moved toward the respective end positions, and having a second branch extending radially of said movable plate valve and at an angle to said first branch which, when said movable plate valve is in said middle position, causes said second branch to be inclined toward said cold water inlet, said second branch having a shape which, when said movable plate valve is moved toward the end position corresponding to the hot water inlet, at first comes into communication with said cold water inlet for mixing cold water with the hot water flowing through said recessed water guide groove and gradually increases the area of communication to a maximum and then gradually decreases the area of communication to a minimum as said first branch uncovers the hot water inlet port.
Thus, in accordance with the fixed plate valve and a movable plate valve, in the form of similar discs, are made ~ .
~ ~ ~3 ~3 ~
from ceramics. The movable plate valve comprises a a recessed guide groove which is formed as a blind groove in an abutting surface thereof (bottom surface in this embodiment). The recessed guide groove comprises a cold water guide port at one end thereof which is adapted to be connected to a cold water inlet port of the fixed plate valve by the switching of a lever. The recessed guide groove further comprises a hot water guide port at another edge part thereof which is adapted to be connected to the hot water inlet port of the fixed plate valve by the switching of the lever. The recessed guide groove is always connectd to an outlet of the fixed plate valve. A plurality of recessed pawl holes used for securing securing pa~Jls which are provided on the fixed plate valve are provided in the edge of the upper surface of the movable plate valve. All of the hot water inlet port, cold water inlet port, and outlet, which are provided in the fixed plate valve, penetrate the fixed plate valve to connect the top surface thereof to the bottom surface. The surfaces of this fixed plate valve and the movable plate valve are fitted against each other to form a plate valve unit.
The interior of a main body of the mixing ~3~38 bibcock supports the fixed plate valve with a seating plate therebetween. A boss is ro-tatably secured by means of a securing pawl and a pawl hole to the valve chamber of an inner cylinder.
The movable plate valve, which is moveably secured by the boss, is inserted in the valve chamber of the inner cylinder. The movable plate Yalve and the fixed plate face each other at abutting surfaces thereof. A handle grille having a lever is secured by a screw to a handle shaft which is provided on the boss. As a result of this structure, the supply of appropriate quantities of hot water and cold water, or a mixture thereof of any desired temperature, and temperature adjustment can be conducted by only horizontal operations of the lever.
The supply and stoppage of hot water and cold water can be selectively conducted by a simple horizontal operation of a lever to meet various needs, such as the supply of appropriate quantities of hot water or cold water, or a mixture thereof of a suitable temperature.
In one embodiment of the present invention said minimum area of communication is slightly greater than æero, whereby said recessed water guide groove is always in communication with said cold water inlet port to at least a small degree.
Referring once more to the accompanying drawings, an embodiment of the~resent invention will now be - 7a -..~ .
:`:
3~
descrlbed.
In Flg.s 1 to 3(A) and (B), a palr of a fIxed plate valve 1 and a movable plate valve 2, whlch are formed from cer-amlcs In a dlsc shape are provIded. The flxed plate valve 1comprlses at one edge part of an abuttlng surface 3 (surface for flttlng the movable plate valve 2) thereof a cold water Inlet port 4 whlch Is adapted to be connected to a cold water gulde port 6 whlch Is formed as a blInd hole In the movable plate valve 2, by the swltchlng of a lever 5, to be descrlbed herelnafter.
The fIxed plate valve 1 further comprlses at another edge part of the abuttlng surface 3 thereof a hot water Inlet port 7 whlch Is also adapted to be connected ~o a hot water gulde port 8 of the movable plate valve 2 by the swltchlng of the same lever 5. A
recessed gulde groove 10 whlch connects the hot water gulde port 8 to the cold water gulde port 6 at àn Intermedlate portlon thereof, and which Is always connected to an outlet 9 of the fIxed plate valve 1, Is provlded. A pluralIty of pawl holes 13 whlch are adapted to be secured to a pluralIty of securlng pawls 20 12 to be descrlbed later, are recessed In another surface of the movable plate valve 2 away from the recessed gulde groove 10 (namely, In the top edge of the ~` ~
~ 3~
movable plate valve 2). A11 of the cold water inlet port 4, hot water inlet port 7, and outlet 9 penetrate the fixed plate valve 1I connecting the top surface and bottom surface of ~he fixed plate valve 1. A plate valve unit A is formed by combining the fixed plate valve 1 and the movable plate valve 2 in such a manner that an abutting surface 3a of the movable plate valve 2 and the abutting surface 3 of the fixed plate valve 1 face each other. A casing 15 is secured to a screw fixing portlon 14 in the upper portion of a main body B of the mixing bibcock. An inner cylinder 1~ having a seating plate 16 and a valve chamber 17 is secured to the casing 15. The fixed plate valve 1 and the movable plate valve 2 are inserted in the valve chamber 17 in such a manner that the fixed plate valve 1 is below, and the movable plate valve 2 is positioned above, and the abutting surfaces 3 and 3a thereof face each other.
A handle shaft 19 is integrally provided on a boss 20 by insert forming. The boss 20 and the inner cylinder 18r which is inserted into the casing 15r are face to freely move with respect to each other in the rotational direction through symmetrically formed step surfaces 21 and 21a. A spring 23 and a ball 24 which are arranged to stop the boss 20 at a cold water stop position, to be described hereinafter, are arranged in a lateral hole 22 that is bored in the boss 20 and a handle shaft 19. A stopper 25 which projects from the circumference of the boss 20 engages with a lateral guide groove 26 which horizontally faces the inner circumference of the inner cylinder 18, and which is formed in a semi-circular arc. A position at which the stopper 25 hits and stops at a left step part 27 is de~ined as a position for supplying hot water, to be described hereinafter, and a position at which the stopper 25 hits and stops at a right step part 27a is defined as a position for supplying cold water, to be described hereinafter. A plurality of the securing pawls 12 project from the bottom surface of the boss 20. These securing pawls 12 are fitted into the pawl holes 13 which are provided in the top circumference of the movable plate valve 2, so as to turn the movable plate valve 2 with the boss 20. A handle grille 28 is connected to the handle shaft 19 by a screw 29. The lever 5 is provided so as to project in the circumferential direction from the upper portion of the handle grille 28. Both hot water and cold water are stopped when the lever 5 is positioned on the same vertical line as that of a water ~ ~ ~3 ~
discharge pipe 30. When the lever 5 is positioned at the hot water supply position shown in Fig. 5 (A) after being turned horizontally to the left from the water stop position, a hot water passage 31 shown in Fig. 6 supplies a full flow of hot water.
Simultaneously with this full flow of hot water, a part of the recessed guide groove 10 and a corner portion 4a of the cold water inlet port 4 are slightly connected each other. Thanks to this slight connection between the recessed guide groove lO and the cold water inlet port 4, cold water in a cold water supply chamber 32 is gradually heated by heat conduction when hot water is fully supplied for a long time. As a result, the surfaces of the main body B of the mixing bibcock are protected Erom overheating. By moving the lever 5 to intermediate positions between the water stop position and the hot water supply position, the mixture of hot water and cold water, and temperature adjutment of the water, can be freely conducted. By moving the lever 5 to intermediate positions between the water stop position and the cold water supply position, the water flow rate can be freely adjusted. The cold Water in the cold water supply chamber 32 is supplied to the water delivery pipe 30 through the cold water inlet port 4, recessed guide groove lOt and outlet 9, and a delivery chamber 11 shown in Fig. 1. Hot water in the hot water supply chamber '3 is supplied to the water delivery pipe 30 through the hot water inlet port 7, recessed guide groove 10, outlet 9, and the delivery chamber 11.
When the lever 5 positioned at the stop position is gradually moved from the position shown in Fig. 4 (A) to the left, the boss 20 which is connected to the handle grille 28, which is integrally formed with the lever 5 over the handle shaft 19, is tu~ned in the same direction as that of the lever 5. The movable plate valve 2, which is connected to the boss 20 by the securing pawls 12 and the pawl holes 13~ is turned in the same direction as the lever 5 and the boss 20. As a result, the hot water guide port 8 which is provided in the recessed guide groove 10 of the movable plate valve 2 is connected to the hot water inlet port 7 o~ the fixed plate valve 1~ and, at the same time, the cold water guide port 6 of the recessed guide groove 10 is connected to the cold water inlet port 4 of the fixed plate valve 1.
Consequently, hot water and cold water are supplied in equal quantities. As the lever 5 is moved to the left with these positional relationships kept as they ~2 -~ 3 ~
are, the quantity of hot water increases, while the quantity of cold water decreases toward zero. During this process, the stopper 25 of the boss 20 approaches the step part 27 in the lateral guide groove 26. The lever 5 stops at the position at which the stopper 25 hits the step part 27. A full flow of hot water is supplied at this stop position.
When hot water is supplied in this way, the relationships between the recessed guide ~roove 10 and the hot water inlet port 7 and the cold water inlet port 4 are, as shown in FigO 5 (A), such that the hot water guide port 8 and the hot water inlet port 7 are fully connected, and the cold water guide port 6 and the cold water inlet port 4 are closed.
However, part of the recessed guide groove 10 and the corner portion ~a of the cold water inlet port 4 are slightly connected, so that some of the cold water in the cold water supply chamber 32 is delivered with the hot water. As a result, the cold water in the cold water supply chamber 32 is prevented from expansion by heating, even when hot water is continuously supplied. Since the quantity of cold water supplied increases linearly with the movement of the lever 5 to the right after the hot water supply has been ended by the movement of the lever 5 3~
to the water stop position, a desired quantity of cold water can be supplied. As the lever 5 is graGually moved to the riyht, the stopper 25 of the boss 20 similarly approaches the step part 27a in the lateral guide groove 26. The lever 5 is stopped at the cold water supply position when the stopper 25 hits the step part 27a, and only cold water is supplied at this position. During the movement of the lever 5 to the right, the relationships between the recessed guide groove 10 and the cold water guide port 6 contribute to an increase in the quantity of cold water. Therefore, a desired quantity of cold water can be supplied.
(Effect) As described above, the device according to the present invention displays the following advantages:
(1) Because a guide groove formed as a blind hole having a cold water guide port and a hot water guide port at each end thereof is recessed into an abutting surface of a movable plate valve, flow rate of a mixture of hot water and cold water and the temperature of the water can be adjusted, and a full flow of hot water can be supplied, by turning a lever horizontally to the left from a stop position, and the full flow rate of cold water can be adjusted, and a full flow of cold water can be supplied by turning the lever horizontally to the right from the stop pcsition.
(2) secause the movable plate valve and a boss are secured to each other by secuxing pawls and pawl holes, and a handle shaft integrally provided on the boss and a handle grille are integrally connected, operationability is improved by enabling a simple turning of the lever horizontally to either side of a stop position, and dangerous splashing of hot water can be completely prevented, even if the lever is rapidly turned to either the right or the left.
~3) Because the boss and an inner cylinder which accommodates the boss are arranged to slide smoothly by means of the symmetrical step surfaces, the structure can be made to strongly correspond to the fluid pressure applied to the movable plate valve, and the mixing bibcock can be operated very smoothly without any restrictions applied to the turning of the boss and the movable plate valve.
Thls Inventlon relates to a ceramlc plate valve of a cold water and hot water mlx~ng blbcock for sanltary use, and an Improvement In Its operatlng method.
The present Inventlon wlll be Illustrated by way of the accompanylng drawlngs, In whlch:-Flg. 1 Is a vertlcal slde vlew of a mlxlng blbcockaccordlng to the present Inventlon;
Flg. 2(A) Is an exploded plan vlew of a movable plate valve of the mlxlng blbcock accordlng to the present Inventlon;
Fig. 3(A) Is an exploded vertlcal cross-sectlonal vlew of the operatlng mechanlsm o~ the present Inventlon;
Flg. 3(B) Is an exploded plan cross-sectlonal vlew taken along the llne Y-Y of Flg. 3(A);
Flg. 4(A~ Is a vlew Illustratlng the relatlonshlp between a lever and a posltlon at whlch water Is stopped;
Flg. 4(B) Is a vlew Illustratlng the relatlonshlP
between the lever and the mlxlng ratlo of hot water and cold water and temperature adJustment;
Flg. 5(A) Is a vlew Illustratlng the relatlonshlp between the lever and a status of a full flow of hot water and a status of a ~UII flow of cold alone;
Flg. 6 Is a plan vlew, from whlch part Is omltted, of the mlxlng blbcock, Illustratlng the relatlonshlp between the blbcock and the lever; and Flg.s 7 and 8 are vlews Illustratlng a conventlonal blbcock In whlah the proce~ure of operatlng the lever vertlcally ~!~
and horlzontally Is Illustrated.
A conventlonal valve mechanlsm havlng a palr of ceramlc plate valves whlch are Installed In a valYe chamber of a mlxlng blbcock Is shown In Fl9.s 1 and 6 (Flg.s 7 and ~ of the present Inventlon) of Japanese Patent Publlcatlon No. 37179/1981.
The valve mechanlsm shown In Flg.s 7 and 8 wlll now be brlefly descrlbed.
A movable plate valve 40 has a mlxlng chamber 41 shaped as a downward'~faclng blInd hole. The movable plate valve 40 Is placed on top of a fIxed plate valve 42. A hot water Inlet port 43 and a cold water Inlet port 44 are adapted to be freely opened and closed, and are always connected to an outlet 4~. The hot water Inlet port 43 and the cold water Inlet port 44 are closed when a lever 46 Is posltloned as shown by the solId llnes. Hot water and cold water 3 ~
are discharged in equal quantities when the lever 46 is pushed down to the horizontal position shown by the alternate long and two short dashes line. Hot water is discharged when the lever 46 is turned horizontally to the left. Cold water is discharged when the lever 46 is turned horizontally to the right. The water is stopped when the lever 46 is restored to the central position and is tilted up.
The movable plate valve 40, which is connected to the lever 46 by the valve shaft 47, moves backwards and forwards along a guide portion 49 connected to a guide groove 48 that is provided in the fixed plate valve 42 for the purpose of discharging or stopping the hot water and cold water. However, this structure has a problem in that the valve mechanism is not easy for children or people with handicapped hands to operate, and errors in operation tend to occur because the discharge and stopping of the hot water and cold water is carried out by moving the lever vertically, and the discharge of hot water and cold water, either separately or together is carried by moving the lever horizontally. Furthermore, when the hot water inlet port is fully open, the water flow rate rapidly decreases. As a result, the temperature of the hot water must be adjusted whenever the hot water inlet port is fully open.
The mechanism of the connection between the fi~ed plate valve and the valve shaft is excessively complicated, because the movable plate valve is adapted to both turn and reciprocate. As a result, the number of parts is increased, and assembly and disassembly when a problem occurs is complicated, which adversely affects maintenance and productivity.
Thus, individual supply of hot water and cold water, and -the mixture, temperature adjustment, supply and stoppage of water, can be only conducted by horizontally turning the lever so as to move the movable plate valve which opens and closes the valve mechanism. The mechanism of the connection between the lever and the movable plate valve is slmplified by the present invention, to ensure easy operation, prevent operating errors, and simplify maintenance.
According to the present invention there is provided a mixing bibcock having a valve mechanism for individually supplying hot water, cold water, or a mixture thereof at a desired temperature, said mixing bibcock comprising: a fixed plate valve having a cold water inlet port, a hot water inlet port, and an outlet port, said ports all extending through said fixed plate valve to connect the top surface thereof to the bottom surface thereof; a movable plate valve having a recessed water guide groove in the form of a blind hole in one surface thereof; a main mixing valve body having a valve chamber therein in which said fixed plate valve and said movable plate valve are positioned with the one surface of said movable plate valve abutting one surface of said fixed plate valve and with said recessed water guide groove always in communication with said outlet port in all positions of movemen-t of said movable plate valve on the abutting surface of said fixed plate valve; an operating means connected to said movable plate valve for reciprocally turning said movable plate valve in a plane on the abutting surface of said fixed plate -~ ~ ~3 ~
valve between a middle position which is between said two inlet ports and two end positions on opposite sides of said middle position which are respectively toward said cold water inlet port and said hot water inlet port; said recessed water guide groove having a first branch extending generally ra~ially outwardly of said movable pla-te v~lve and when said mova~le plate valve ls in said middle posi-tion, lying between said inlet ports and being movable toward said inlet ports for gradually uncovering the respective inl~t ports as said movable plate valve is moved toward the respective end positions, and having a second branch extending radially of said movable plate valve and at an angle to said first branch which, when said movable plate valve is in said middle position, causes said second branch to be inclined toward said cold water inlet, said second branch having a shape which, when said movable plate valve is moved toward the end position corresponding to the hot water inlet, at first comes into communication with said cold water inlet for mixing cold water with the hot water flowing through said recessed water guide groove and gradually increases the area of communication to a maximum and then gradually decreases the area of communication to a minimum as said first branch uncovers the hot water inlet port.
Thus, in accordance with the fixed plate valve and a movable plate valve, in the form of similar discs, are made ~ .
~ ~ ~3 ~3 ~
from ceramics. The movable plate valve comprises a a recessed guide groove which is formed as a blind groove in an abutting surface thereof (bottom surface in this embodiment). The recessed guide groove comprises a cold water guide port at one end thereof which is adapted to be connected to a cold water inlet port of the fixed plate valve by the switching of a lever. The recessed guide groove further comprises a hot water guide port at another edge part thereof which is adapted to be connected to the hot water inlet port of the fixed plate valve by the switching of the lever. The recessed guide groove is always connectd to an outlet of the fixed plate valve. A plurality of recessed pawl holes used for securing securing pa~Jls which are provided on the fixed plate valve are provided in the edge of the upper surface of the movable plate valve. All of the hot water inlet port, cold water inlet port, and outlet, which are provided in the fixed plate valve, penetrate the fixed plate valve to connect the top surface thereof to the bottom surface. The surfaces of this fixed plate valve and the movable plate valve are fitted against each other to form a plate valve unit.
The interior of a main body of the mixing ~3~38 bibcock supports the fixed plate valve with a seating plate therebetween. A boss is ro-tatably secured by means of a securing pawl and a pawl hole to the valve chamber of an inner cylinder.
The movable plate valve, which is moveably secured by the boss, is inserted in the valve chamber of the inner cylinder. The movable plate Yalve and the fixed plate face each other at abutting surfaces thereof. A handle grille having a lever is secured by a screw to a handle shaft which is provided on the boss. As a result of this structure, the supply of appropriate quantities of hot water and cold water, or a mixture thereof of any desired temperature, and temperature adjustment can be conducted by only horizontal operations of the lever.
The supply and stoppage of hot water and cold water can be selectively conducted by a simple horizontal operation of a lever to meet various needs, such as the supply of appropriate quantities of hot water or cold water, or a mixture thereof of a suitable temperature.
In one embodiment of the present invention said minimum area of communication is slightly greater than æero, whereby said recessed water guide groove is always in communication with said cold water inlet port to at least a small degree.
Referring once more to the accompanying drawings, an embodiment of the~resent invention will now be - 7a -..~ .
:`:
3~
descrlbed.
In Flg.s 1 to 3(A) and (B), a palr of a fIxed plate valve 1 and a movable plate valve 2, whlch are formed from cer-amlcs In a dlsc shape are provIded. The flxed plate valve 1comprlses at one edge part of an abuttlng surface 3 (surface for flttlng the movable plate valve 2) thereof a cold water Inlet port 4 whlch Is adapted to be connected to a cold water gulde port 6 whlch Is formed as a blInd hole In the movable plate valve 2, by the swltchlng of a lever 5, to be descrlbed herelnafter.
The fIxed plate valve 1 further comprlses at another edge part of the abuttlng surface 3 thereof a hot water Inlet port 7 whlch Is also adapted to be connected ~o a hot water gulde port 8 of the movable plate valve 2 by the swltchlng of the same lever 5. A
recessed gulde groove 10 whlch connects the hot water gulde port 8 to the cold water gulde port 6 at àn Intermedlate portlon thereof, and which Is always connected to an outlet 9 of the fIxed plate valve 1, Is provlded. A pluralIty of pawl holes 13 whlch are adapted to be secured to a pluralIty of securlng pawls 20 12 to be descrlbed later, are recessed In another surface of the movable plate valve 2 away from the recessed gulde groove 10 (namely, In the top edge of the ~` ~
~ 3~
movable plate valve 2). A11 of the cold water inlet port 4, hot water inlet port 7, and outlet 9 penetrate the fixed plate valve 1I connecting the top surface and bottom surface of ~he fixed plate valve 1. A plate valve unit A is formed by combining the fixed plate valve 1 and the movable plate valve 2 in such a manner that an abutting surface 3a of the movable plate valve 2 and the abutting surface 3 of the fixed plate valve 1 face each other. A casing 15 is secured to a screw fixing portlon 14 in the upper portion of a main body B of the mixing bibcock. An inner cylinder 1~ having a seating plate 16 and a valve chamber 17 is secured to the casing 15. The fixed plate valve 1 and the movable plate valve 2 are inserted in the valve chamber 17 in such a manner that the fixed plate valve 1 is below, and the movable plate valve 2 is positioned above, and the abutting surfaces 3 and 3a thereof face each other.
A handle shaft 19 is integrally provided on a boss 20 by insert forming. The boss 20 and the inner cylinder 18r which is inserted into the casing 15r are face to freely move with respect to each other in the rotational direction through symmetrically formed step surfaces 21 and 21a. A spring 23 and a ball 24 which are arranged to stop the boss 20 at a cold water stop position, to be described hereinafter, are arranged in a lateral hole 22 that is bored in the boss 20 and a handle shaft 19. A stopper 25 which projects from the circumference of the boss 20 engages with a lateral guide groove 26 which horizontally faces the inner circumference of the inner cylinder 18, and which is formed in a semi-circular arc. A position at which the stopper 25 hits and stops at a left step part 27 is de~ined as a position for supplying hot water, to be described hereinafter, and a position at which the stopper 25 hits and stops at a right step part 27a is defined as a position for supplying cold water, to be described hereinafter. A plurality of the securing pawls 12 project from the bottom surface of the boss 20. These securing pawls 12 are fitted into the pawl holes 13 which are provided in the top circumference of the movable plate valve 2, so as to turn the movable plate valve 2 with the boss 20. A handle grille 28 is connected to the handle shaft 19 by a screw 29. The lever 5 is provided so as to project in the circumferential direction from the upper portion of the handle grille 28. Both hot water and cold water are stopped when the lever 5 is positioned on the same vertical line as that of a water ~ ~ ~3 ~
discharge pipe 30. When the lever 5 is positioned at the hot water supply position shown in Fig. 5 (A) after being turned horizontally to the left from the water stop position, a hot water passage 31 shown in Fig. 6 supplies a full flow of hot water.
Simultaneously with this full flow of hot water, a part of the recessed guide groove 10 and a corner portion 4a of the cold water inlet port 4 are slightly connected each other. Thanks to this slight connection between the recessed guide groove lO and the cold water inlet port 4, cold water in a cold water supply chamber 32 is gradually heated by heat conduction when hot water is fully supplied for a long time. As a result, the surfaces of the main body B of the mixing bibcock are protected Erom overheating. By moving the lever 5 to intermediate positions between the water stop position and the hot water supply position, the mixture of hot water and cold water, and temperature adjutment of the water, can be freely conducted. By moving the lever 5 to intermediate positions between the water stop position and the cold water supply position, the water flow rate can be freely adjusted. The cold Water in the cold water supply chamber 32 is supplied to the water delivery pipe 30 through the cold water inlet port 4, recessed guide groove lOt and outlet 9, and a delivery chamber 11 shown in Fig. 1. Hot water in the hot water supply chamber '3 is supplied to the water delivery pipe 30 through the hot water inlet port 7, recessed guide groove 10, outlet 9, and the delivery chamber 11.
When the lever 5 positioned at the stop position is gradually moved from the position shown in Fig. 4 (A) to the left, the boss 20 which is connected to the handle grille 28, which is integrally formed with the lever 5 over the handle shaft 19, is tu~ned in the same direction as that of the lever 5. The movable plate valve 2, which is connected to the boss 20 by the securing pawls 12 and the pawl holes 13~ is turned in the same direction as the lever 5 and the boss 20. As a result, the hot water guide port 8 which is provided in the recessed guide groove 10 of the movable plate valve 2 is connected to the hot water inlet port 7 o~ the fixed plate valve 1~ and, at the same time, the cold water guide port 6 of the recessed guide groove 10 is connected to the cold water inlet port 4 of the fixed plate valve 1.
Consequently, hot water and cold water are supplied in equal quantities. As the lever 5 is moved to the left with these positional relationships kept as they ~2 -~ 3 ~
are, the quantity of hot water increases, while the quantity of cold water decreases toward zero. During this process, the stopper 25 of the boss 20 approaches the step part 27 in the lateral guide groove 26. The lever 5 stops at the position at which the stopper 25 hits the step part 27. A full flow of hot water is supplied at this stop position.
When hot water is supplied in this way, the relationships between the recessed guide ~roove 10 and the hot water inlet port 7 and the cold water inlet port 4 are, as shown in FigO 5 (A), such that the hot water guide port 8 and the hot water inlet port 7 are fully connected, and the cold water guide port 6 and the cold water inlet port 4 are closed.
However, part of the recessed guide groove 10 and the corner portion ~a of the cold water inlet port 4 are slightly connected, so that some of the cold water in the cold water supply chamber 32 is delivered with the hot water. As a result, the cold water in the cold water supply chamber 32 is prevented from expansion by heating, even when hot water is continuously supplied. Since the quantity of cold water supplied increases linearly with the movement of the lever 5 to the right after the hot water supply has been ended by the movement of the lever 5 3~
to the water stop position, a desired quantity of cold water can be supplied. As the lever 5 is graGually moved to the riyht, the stopper 25 of the boss 20 similarly approaches the step part 27a in the lateral guide groove 26. The lever 5 is stopped at the cold water supply position when the stopper 25 hits the step part 27a, and only cold water is supplied at this position. During the movement of the lever 5 to the right, the relationships between the recessed guide groove 10 and the cold water guide port 6 contribute to an increase in the quantity of cold water. Therefore, a desired quantity of cold water can be supplied.
(Effect) As described above, the device according to the present invention displays the following advantages:
(1) Because a guide groove formed as a blind hole having a cold water guide port and a hot water guide port at each end thereof is recessed into an abutting surface of a movable plate valve, flow rate of a mixture of hot water and cold water and the temperature of the water can be adjusted, and a full flow of hot water can be supplied, by turning a lever horizontally to the left from a stop position, and the full flow rate of cold water can be adjusted, and a full flow of cold water can be supplied by turning the lever horizontally to the right from the stop pcsition.
(2) secause the movable plate valve and a boss are secured to each other by secuxing pawls and pawl holes, and a handle shaft integrally provided on the boss and a handle grille are integrally connected, operationability is improved by enabling a simple turning of the lever horizontally to either side of a stop position, and dangerous splashing of hot water can be completely prevented, even if the lever is rapidly turned to either the right or the left.
~3) Because the boss and an inner cylinder which accommodates the boss are arranged to slide smoothly by means of the symmetrical step surfaces, the structure can be made to strongly correspond to the fluid pressure applied to the movable plate valve, and the mixing bibcock can be operated very smoothly without any restrictions applied to the turning of the boss and the movable plate valve.
(4) In comparison with the conventional vertical or horizontal movement of the lever, the operability is improved because a simple handling of the lever in only the horizontal direction to either the right or left causes the supply of the desired hot water, cold ~ ~3~3~
water, or mlxture ~hereof, and, even wlth hands that cannot move freely, the mlxlng blbcock can be operated seeurely and errors In operatlon can be prevented, and, slnce the operatlng mechanlsm Is so slmple, cost can be reduced In a manufacturlng and a products dlstrlbutlon processes.
\
water, or mlxture ~hereof, and, even wlth hands that cannot move freely, the mlxlng blbcock can be operated seeurely and errors In operatlon can be prevented, and, slnce the operatlng mechanlsm Is so slmple, cost can be reduced In a manufacturlng and a products dlstrlbutlon processes.
\
Claims (3)
1. A mixing bibcock having a valve mechanism for individually supplying hot water, cold water, or a mixture thereof at a desired temperature, said mixing bibcock comprising: a fixed plate valve having a cold water inlet port, a hot water inlet port, and an outlet port, said ports all extending through said fixed plate valve to connect the top surface thereof to the bottom surface thereof; a movable plate valve having a recessed water guide groove in the form of a blind hole in one surface thereof; a main mixing valve body having a valve chamber therein in which said fixed plate valve and said movable plate valve are positioned with the one surface of said movable plate valve abutting one surface of said fixed plate valve and with said recessed water guide groove always in communication with said outlet port in all positions of movement of said movable plate valve on the abutting surface of said fixed plate valve; an operating means connected to said movable plate valve for reciprocally turning said movable plate valve in a plane on the abutting surface of said fixed plate valve between a middle position which is between said two inlet ports and two end positions on opposite sides of said middle position which are respectively toward said cold water inlet port and said hot water inlet port; said recessed water guide groove having a first branch extending generally radially outwardly of said movable plate valve and when said movable plate valve is in said middle position, lying between said inlet ports and being movable toward said inlet ports for gradually uncovering the respective inlet ports as said movable plate valve is moved toward the respective end positions, and having a second branch extending radially of said movable plate valve and at an angle to said first branch which, when said movable plate valve is in said middle position, causes said second branch to be inclined toward said cold water inlet, said second branch having a shape which, when said movable plate valve is moved toward the end position corresponding to the hot water inlet, at first comes into communication with said cold water inlet for mixing cold water with the hot water flowing through said recessed water guide groove and gradually increases the area of communication to a maximum and then gradually decreases the area of communication to a minimum as said first branch uncovers the hot water inlet port.
2. A mixing bibcock as claimed in claim 1 in which said minimum area of communication is slightly greater than zero, whereby said recessed water guide groove is always in communication with said cold water inlet port to at least a small degree.
3. A mixing bibcock as claimed in claim 1 in which said operating means comprises a boss over said movable plate valve, pawl means connecting said boss to said movable plate valve for turning said movable plate valve when said boss is turned, and a lever attached to said boss for turning said boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000552647A CA1283838C (en) | 1987-11-24 | 1987-11-24 | Mixing bibcock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000552647A CA1283838C (en) | 1987-11-24 | 1987-11-24 | Mixing bibcock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1283838C true CA1283838C (en) | 1991-05-07 |
Family
ID=4136920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000552647A Expired - Fee Related CA1283838C (en) | 1987-11-24 | 1987-11-24 | Mixing bibcock |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1283838C (en) |
-
1987
- 1987-11-24 CA CA000552647A patent/CA1283838C/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |