FR2542842A1 - AUTOMATIC VALVE CLOSURE DEVICE IN WATER MIXER VALVE CAPABLE OF QUANTITATIVELY INTERRUPTING WATER DISCHARGE - Google Patents

Abstract

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

Description

AUTOMATIC VALVE CLOSING DEVICE IN A FAUCET

  WATER MIXER CAPABLE OF QUANTITATIVELY INTERRUPTING THE

DISCHARGE OF WATER

  The present invention relates to a water mixing faucet

  sand in sanitary machines and able to interrupt the discharge

  hot and cold water automatically when a pre-

  mixed water has been discharged, that is to say capable of

  quantitatively abort the water discharge.

  There is a conventional water mixing faucet capable of

  break the discharge of automatically mixed water when preset amounts of hot and cold water have been discharged, this faucet

  water mixer being shown in Figure 1 (Figure 6 of the present invention).

  Japanese Patent Application No. 14666/1981).

  This mixing valve will be described with reference to FIG.

  FIG. 6 of the accompanying drawings. A body 41 of this faucet is provided with a hot water passage 42, a cold water passage 43, a mixed water passage 44 and a passage. discharge valves 45 which are arranged in the order mentioned A valve 49 is placed opposite an orifice 46 opening into the mixed water passage 44 so as to close and open the valve orifice 46 when the valve 49 is in contact and

  discarded by a cam 48 provided in an intermediate portion of a step

  A control valve 51 having a hot water passage 42 'and a seat 50 is provided so as to pass through the hot water passage 42 and the cold water passage 43. placed in intermediate portions of passages extending between the body 41 of the mixing valve and a cold water pipe and a

  hot water storage tank.

  In this mixing valve, the hot water passage, the cold water passage and the mixed water passage freely communicate with each other. Therefore, when a preset amount of mixed water has been finished be discharged and when closing the valve port, the hot and cold water flows are interrupted in the mixed water passage as hot and cold water

  are in communication with each other on the side of the primary pressure

  The result is that hot or cold water, depending on which one is at a higher pressure than the other, flows in the direction of

  the other by causing a backward flow of the latter towards the back

  that the cold water flows towards the hot water causing a reflux of the latter to the rear, a safety valve provided in the hot water storage tank is requested in the open condition so that all the hot water is pumped out of it When the hot water flows towards the cold water causing it to flow backwards, not only the inside of the pipe cold water loses its sanitary condition but also a cold water meter is damaged by hot water Stop valves provided in the intermediate parts of the hot water passage

  and the cold water passage are provided with spring whose elastic force

  The tick is usually so small that it does not prevent the flow of cold water. Therefore, when a foreign material is held between a shut-off valve and its seat, the water discharge can not be prevented.

  interrupted completely by the single elastic force of a spring.

  An object of the present invention is to solve the problems mentioned above and to close a valve orifice placed on the hot water side and a valve orifice placed on the cold water side automatically, separately and at the same time. time that the ending

  providing a pre-set amount of mixed water.

  The present invention therefore relates to a mixing valve

  geur comprising a hot water passage and a cold water passage which are arranged to be opened and closed by means of, respectively, a hot water valve and a cold water valve, a water passage mixture formed between the hot water passage and the cold water passage, a known reducing mechanism and two cams operatively connected to the reducing mechanism, both the reducing mechanism and the cams being isolated from the mixed water passage, rods of the chuade water valve and the cold water valve are placed opposite cam working surfaces in the same biasing condition, the shafts on which the cams are mounted, an operating rod for adjusting the flow rate and connected to camshafts so that energy can be

  thus transmitted in one direction, and a coupling provided for an ex-

  end of the operating rod and connected to the reduction mechanism carrying a vane wheel, so that the rotation of the operating rod can be transmitted to the reduction mechanism, which allows the unloading

  of hot water and the discharge of cold water to be automatically interrupted.

  separately and at the same time as the termination of the supply of

  re a pre-set amount of mixed water.

  Other features and advantages of the invention will be

  highlighted in the following description, given by way of example

  nonlimiting, with reference to the accompanying drawings in which:

  FIG. 1 is a view partially broken away in longitudinal section;

  dinal of a water mixer faucet according to the-

  present invention; Figure 2 is a front elevation and sectional view taken on line A-A of Figure 1; Figure 3A is a front elevational view on an enlarged scale and in section taken along the line B-B of Figure 1; Figure 3B is a front elevational view on an enlarged scale

  made in section along the line C-C of Figure 1.

  Figure 4 is a front elevational view in partial section of another example of a cam; Figure 5A is an elevational view in partial section of the mixing valve provided with another example of a valve body;

  Figure 5B is a side elevational view and in sectional view of

  an enlarged scale taken along line D-D of Figure 5A; and FIG. 6 is a sectional view of a mixer tap for water of

the prior art.

  The embodiment of the present invention is arranged in the following manner as shown in FIGS. 1-3A and 3B, a body of

  mixing valve 1 is provided in its two outermost parts with a

  of hot water 4 and a cold water passage 5 which are connected

  to a hot water portion 2 and a cold water portion 3 of

  valve, whose valves are opened after a certain

  of the mixed water has been set, and which are in communication with a hot water supply source and a cold water supply source respectively. On a straight line intersecting the hot water passage 4 and the cold water passage 5, there are provided threaded holes 7, 7 in which buffers 6, 6 and a hot water valve port 10 and a cold water valve port 11 are housed, which are respectively placed opposite a hot water valve 8 and a cold water valve 9, are arranged in such a way that

  the holes 7, 7 and the valve ports 10, 11 communicate coaxially with each other.

  The mixed water passage 12 is in communication with a discharge passage 14 via a communication port 13. The passage of the mixed water passage 12 is in communication with a discharge passage 14 via a communication port 13.

  discharge 14 is further in communication with a discharge pipe 26.

  The mixed water flowing in the discharge passage 14 causes the rotation of a vane wheel 15 The rotational force of the vane wheel 15 is transmitted to a known reducing mechanism 17

  of gearless gearbox mounted on a shaft 16, which is

  placed coaxially with the vane wheel 15 and a gear reduction gear mounted on another shaft 16 'The reduced rotational force at a predetermined level is then transmitted to gears 19, 19'

  placed on an operating rod 18 which will be described below.

  The resulting rotational force is also transmitted through the

  gear 21, 21 which are engaged with the gear 19 ', to shafts 20, 20 on the end portions of which are mounted

  cams 22, 22 so as to be positioned in the discharge passageway

  As a result, the contact positions of curved working surfaces 23 with respect to the rods 24, placed opposite the

  23, the hot water valve 8 and the cold water valve

  9, vary so that when a certain amount of water

  The discharged pump has reached a pre-set level by means of the operating rod 18, the hot water valve port 10 and the cold water valve port 11 are independently closed. A handle 25 is fixed on the operating rod 18 so that the number of turns to be turned by the handle 25 can be adjusted in correspondence with a quantity of mixed water to be discharged and in a position which is defined by means of a scale and an index of known design (which are all

  two omitted from the drawing), these elements being provided on a circumferential surface

  of the handle 25 and on the corresponding part of an

  circumferential face of the valve body 1.

  The valves provided in the hot water part 2 and the cold water part 3 of the tap, which are opened and closed by actuating the

  handles 25a, 25b, should be kept open after the temperature

  The mixed water flowing in the discharge passage 14 during the rotation of the vane wheel 15 placed therein is flowed out through a pipe. Figure 4 shows another example of a cam 22. A single cam 22 'is provided on the opposite parts of a circumferential surface with curved working surfaces 23, 23 having the same curvature and placed opposite to each other. Valve stem end portions 27, 27 24 Figures 5 A and 5 B show another example of the hot water valve 8 and the cold water valve 9 A valve body 28 is provided in this example a guide 31 which is introduced into the hot water valve port 10 and the cold water valve port 11 so as to be placed at all times in

  a threaded hole 30 formed in the central part of a sealing gasket

  29, so that the valve body 28 can be used on both the hot and cold side of the water. The guide 31 has a plurality of curved recesses 13 'distributed between a plurality of ribs 32

  formed on a circumferential surface of the guide, said recesses

  13 'allowing the flow of fluid between their surfaces and inner surfaces of the hot water valve port 10 and

  the cold water valve port 11 will now be described an example

  For example, an imposed amount of mixed water is supplied to a washing machine and a hot water tank (both of which are omitted from the drawing). First, when the handle 25 shown in FIG. actuated in a predetermined direction to adjust an unloaded quantity imposed on the graduated scale, the rotation

  of the handle rod 18 is transmitted to the cams 22, 22 arranged coaxially.

  to it, the gears 21, 21 being engaged with the gear

  swim 19 'on both sides of it, in order to turn the cams -

  22, 22 in the same direction and in the same way Meanwhile, the contact portions of the curved working surfaces 23, 23 of the

  cams 22, 22, which are placed opposite the extreme

  27, 27 of the valve stems 24, 24 reach predetermined positions.

  end of unloaded quantity adjustment Maneuvering the handle -

  is then stopped and the hot water valve port 10 and the

  11, which are respectively opposite the hot water valve 8 and the hot water valve 9,

are open at the same time.

  During the operation described above, the gear 19 placed on the handle rod 18 is rotated in the same manner as a known type friction clutch, as shown in FIG. 3B, so that the

  forced rotation of the rod 18 can not be transmitted to the mecha-

  As a result, the handle 25 can be operated easily. When the handles 25a, 25b are turned in the valve opening direction after a defined amount of mixed water

  discharged was regulated by the operation described above, hot water

  flows from the hot water passage 4 to the mixed water passage 12 through the hot water valve port 10 while cold water flows from the passage of cold water 5 to the mixed water passage 12 via the cold water valve port 11 Hot and cold water are mixed

  together appropriately as they flow from the pas-

  mixed water 12 to the communication port 13

  The resulting mixture of mixed water passes through the discharge passage 14 com-

  communicating with the orifice 13 to rotate the vane wheel 15 while the mixed water flows into the discharge passage 14 (with reference to FIGS. 1 and 2). The rotational force acting on the

  The rapidly rotating vane wheel 15 is reduced to a predetermined level.

  while being transmitted to the gear train mounted on the shaft 16 'via the shaft 16 and the gear train placed thereon. The thus reduced rotational force is transmitted to the shafts. 20, 20 at a slow speed in the opposite manner to that mentioned above, through the gears 19, 19 and

  gears 21, 21 which are engaged with the gears 19, 19

  sequence, the cams 22, 22 are rotated also in the

  opposite direction to gradually vary the positions of

  tact of the curved working surfaces 23, 23 with the end working portions 27, 27, placed opposite the working surfaces 23, 23,

  Valve stems 24, 24 When the stopping positions of

  water charge of the curved working surfaces 23, 23 of the cams 22, 22 are aligned with the end working portions 27, 27 as shown in Fig. 2, the hot water valve port 10 and the cold water valve They are closed and as a result the valve 7.

  8 and the cold water valve 9 are also closed if

  As a result, the mixed water discharge is interrupted after a preset amount of this water has finished

  At the same time, the camshafts 20, 20 are

  dragged in rotation, the gear 19 is turned forward so as to rotate the operating rod 18 in the same direction, so

  that the operating rod 18 and the handle 25 return to the positions

  departure conditions where they had been placed before the setting of the

  amount discharged for use in a subsequent operation.

  The operation of this alternative embodiment of the invention

  tion is also in line with what has been described above; The present invention, having the structure described above, provides the following advantages: 1. the hot water valve and the cold water valve are placed

  facing each other on the primary pressure side of the

  fice of hot water valve and the cold water valve port, and the rods of said valves are arranged separately

  in order to be placed next to the curved surfaces of

  Thus, the amount of mixed water to be discharged, which consists of the same amount of hot and cold water, can be easily adjusted to a level imposed by a simple actuation of the water. temperature control handle In addition, when a temperature of

  the mixed water is set at a desired level in advance, the

  net mixer can be used in this condition when it is necessary to use it repeatedly in the same

  circumstances This allows the deletion of

temperature.

  2. the discharge of hot and cold water is interrupted separately

  in one time and at the same time as the termination of the

  quantitative mixing of mixed water, by alignment of positions

  contact of the curved cam working surfaces with

  porting to the end portions of the valve stems with the positions in which the hot water valve port and the cold water valve port are closed together with the hot water valve and the valve respectively water

  As a result, a fluid, whose pressure is higher than

  than the other fluid, does not flow towards the second fluid, so that the second fluid does not flow backwards It follows that the inside of the cold water pipe

  maintains sanitary conditions and that hot water is

  in the hot water tank is not returned to the outside.

  laughing. 3. Unlike a conventional water mixer tap in

  which a hot water passage and a cold water passage

  freely flow with a mixed water passage and in which a fluid, whose pressure is greater than that of the other fluid, flows towards the second fluid to cause a backward flow thereof, water mixing valve according to the present invention is able to close the hot water valve port and the cold water valve port

  separately at the same time as the quantity interruption

  As a result, the present invention can safely prevent backflow of hot and cold water back into the pipe.

  cold water or into the hot water tank.

Claims (1)

CLAIM   Automatic valve closing device in a water mixing valve capable of quantitatively interrupting the discharge of water,   characterized in that it comprises a hot water passage (4) and a passageway   cold water (5) which are arranged to be opened and closed by means of a hot water valve (8) and a cold water valve (9), respectively, and communicating with each other another through a mixed water passage (12), a reduction mechanism (17) isolated from said mixed water passage (12) and provided with cams (22, 22 ') connected to said pressure valve; hot water (8) and said cold water valve (9) via valve stems (24), an operating rod (18) for adjusting the flow rate, and shafts (20) on which said cams (22, 22 ') are mounted, said handle shaft (18), said camshafts (20) and said reduction mechanism (17) being connected in such a way that the energy can be transmitted to them in one direction, so that the discharge of hot water and the discharge of cold water can be   interrupted separately and automatically, concurrently with the   quantitative supply of mixed water.