CA1283837C - Sanitary single-handle mixing valve - Google Patents

Sanitary single-handle mixing valve

Info

Publication number
CA1283837C
CA1283837C CA000548603A CA548603A CA1283837C CA 1283837 C CA1283837 C CA 1283837C CA 000548603 A CA000548603 A CA 000548603A CA 548603 A CA548603 A CA 548603A CA 1283837 C CA1283837 C CA 1283837C
Authority
CA
Canada
Prior art keywords
cold water
mixing valve
inlet opening
opening
hot
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.)
Expired - Lifetime
Application number
CA000548603A
Other languages
French (fr)
Inventor
Konrad Bergmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trane US Inc
Original Assignee
American Standard Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American Standard Inc filed Critical American Standard Inc
Application granted granted Critical
Publication of CA1283837C publication Critical patent/CA1283837C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/078Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted and linearly movable closure members
    • F16K11/0782Single-lever operated mixing valves with closure members having flat sealing faces
    • F16K11/0787Single-lever operated mixing valves with closure members having flat sealing faces with both the supply and the discharge passages being on the same side of the closure members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)
  • Artificial Filaments (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

ABSTRACT
The invention relates to a sanitary single-handle mixing valve having control elements composed of at least two discs, one of which serves as a fixed valve seat disc with two inlet openings for cold and hot water. For purposes of operating the mixing valve in combination with thermally or hydraulically controlled flow heaters, the centroids of the port areas of the inlet openings, or at least the centroid of the port area of the cold water inlet opening, is shifted a few degrees of angle towards the cold water setting in order to achieve hydraulic asymmetry when the operating handle is in its central position.

Description

- ~3~ 7 The invention re ates to a sin,gle-handle, sanitary mixlng valve having control elements composed of at least two discs, one of which serves as a fixed valve seat disc with two inlet openings for cold and hot water, while the second disc, movably disposed on the valve seat disc, has a control edge that at least partially reduces the free flow area for cold water at the inlet opening when the movable disc is shifted to its central position by the operating handle, as compared to the corresponding free flow ar~ of the hot water inlet opening of ~10 the fixed valve seat, in the mixed water temperature ranges conventionally bounding a so-called comfort zone.

When mixing fittings are operated in combination with thermally or hydraulically controlled flow heaters, malfunc-tions often occur in the ordinary mixed water temperatures because the heaters require certain minimum flow rates. If these minimum flow rates are not maintained, the heaters will switch off in whole or in part.
To avoid such malfunctions, there are known single-handle mixing valvesof the type described in which the mixing chamber opening in the movable disc is asymmetrically shaped relative to a symmetrical port configuration in the fixed valve seat disc, to ensure tha~ the free flow area at the inlet opening for cold water is smaller than on the correspondin~ hot water side in the mixed water temperature ranges. Such a ; ~,''`' ~

~ '7 mixing valve, from which the present invention departs, is disclosed in German patent publication No. 33 10 ~80-A. It has proved successful in practice. A disadvantage of the ~.nown devices is that the movable disc, o,wing to the special configuration of the mixing chamber opening, must be a special part, that is, differing from the corresponding discs of conventional single-handle mixing valves.

With the foregoing in mind, an object of the invention is to provide a sanitary mixing valve wherein the movable disc may be of conventional configuration or the fixed valve seat disc may be of conventional configuration. Another object of the invention is to provide a mixing valve, in combination with thermally or hydraulically controlled flow heaters, which is simple in construct and easy to manufacture, and affords reliable operation.
The sanitary mixing valve of the present invention provides that the centroids of the port areas of the inlet openings in the fixed valve seat disc, or at least the centroid of the port area of the inlet opening for cold water, are shifted a few degrees of angle toward the cold water setting in order to achieve hydraulic asymmetry in the central positions of the operating handle.
According to one form of the invention, the conventional configuration of the movable disc is unmodified while the inlet opening for hot water is made larger than the inlet opening for cold water so that hydraulic a~try is achieved when the handle is in its central position.

~3~37 According to another form of the invention, the inlet opening for cold water is made kidney-shaped; the interior edge of the opening is drawn inwardly.
According to still another fo~m of the invention, the lengthwise axis of the inlet opening for hot water is greater than the axis of the inlet opening for cold water.
A further form of the invention provides that the control edge of the movable disc reduces the free flow area at the inlet opening of cold water, when compared to the corresponding area of the hot water opening, so that the centroid of the port area of the inlet opening for c~ld water is shifted radially in the direction of opening of the control edge of the movable disc relative to the inlet opening for hot water.

In the drawings, the subject matter of the invention is represented in three embodiments by way of example where:
FIG. 1 is a schematic representation of the single-handle mixing valve of the present invention, operably coupled to a flow heater;
~ FIG. lA is an elevational view, in section, of a single-handle mixing valve in its opened position, shown in FIG. l;
FIG. lB is a view similar to FIG. lA, but in its closed position;
FIG. lC is a top plan view with the single-handle mixing valve in its full mixing position;
FIGS. 2A and 2~ are bottom plan views of the fixed valve seat disc and movable disc, according to an embodiment of the invention;

~3~
FIGS. 3A to 13A are bottom plan views of the fixed valve seat disc and movable disc of FIGS. 2A and 2B in full assembly, wi~h tha movable disc of FIG. 2B shown in various functional positions of the valve assembly, n~mely, FIG. 3, its closed position, FIGS. 4A-4B through 7A-7B, hot water positions, FIGS.
8A-8B to 13A-13B, its cold water positions;
FIGS. 3B-13B are sectional views, in elevation, of the respective views of FIGS. 3A-13A, which illustrate water flow through the valving assembly, as seen by following the -direction of the arrows;
FIGS. 14A-14B are another embodiment of the valve assembly shown in FIGS. 2A-2B; and FIGS. 15A-lSB are a further embodiment of the invention, as shown in FIG~ 2A-2B.

FIG. 1 illustrates, schematically, a single-handle mixing valve assembly 10, operably coupled to a flow heater 12 by hot water conduit 14 and cold water conduit 16. Main water supply conduit 11 is coupled to flow hot water heater 12 and cold water conduit 16 through "T" coupling 15.
Mixing valve 10 includes a valve housing 20 in which valve cartridge 22 is arranged with control elements having two valve discs 24 and 26. Disc 24 is fixed in cartridge 22 and serves as a valve seat. Fixed disc 24 is formed with an inlet opening 21 for hot water and an inlet opening 23 for cold water, as well as an outlet opening 25 for mixed water leading to spout 13 of mixing valve assembly 10.
FIGS. 2A, 2B through 13A, 13B illustratei in bottom plan views and sectional view in elevation, respectively, fixed disc ~, 3~7 24 and movable disc 26 in their various respective operative positions from fully closed to fully opened, shown by the direction of the arrows in sectional views, in elevation, of FIGS. 4B through 13B. Movable disc 26 is shown in dotted line.
Also, the position of handle 18 is shown by the arrow above each view of the valve discs in plan.
FIG. 3A shows valve discs 24,26 in their closed position, with no water flow through the valve disc, FIG. 3B.
As FIGS. 3A-3B to 13A-13B illustrate, the centroids 28 of inlet openings 21,23 are shifted a few degrees toward the cold water setting by handle 18, shown operably coupled in FIGS. lA, lB to movable disc 26. In this way, hydraulic asymmetry is achieved in the central positions of movable disc 26. For such actuation, handle 18 is connected to control lever 19, mounted on cartridge 22, which engages a recess 17 in movable disc 26.
Movable disc 26 is arranged to slide and pivot to control both water flow and temperature through handle 18. Mixing chamber 27 opens only towards valve seat disc 24. As movable disc 26 is shifted over valve seat disc 24, mixing chamber 27 will overlap hot and cold inlet openings 21,23 and outlet opening 25 in varying degrees by means of a control edge 29. Inlet opening 21 for hot water communicates by way of a connecting hot water pipe 14 with flow heater 12. Movable disc 26 is provided with a projection 30 having a thickened end 36 guided between parallel ribs, not shown, on the inside wall of valve cartridge 22.
Owing to the hydraulic asymmetry, according to the invention, when movable disc 26 is shifted to its central positions by operating handle 18 and, hence, in the usual mixed 3~

water temperature ranges bounding a so-called comfort zone, it is ensured that the free flow section at inlet opening 23 for cold water, shown in the embodiments of FIGS. 3A to 13A and 15A, with the special aid of control edge 29, is reduced when compared to the hot water si~e. The free flow section for hot water remains unaffected in the central positions.
Hydraulic asymmetry is accomplished by merely shifting centroid 28 of the port areas of hot and cold inlet openings 21,23 in the fixed valve seat disc a few degrees towards the cold water setting. This means that the inlet openings may be identical to each other, as shown in FIGS. 3A to 13A.
Hydraulic asymmetry is also accomplished by simply making inlet opening 21' for hot water larger in cross section than inlet opening 23' for cold water, FIG. 14A. ~hus, hydraulic asymmetry is achieved when handle 18 is in its central position. Centroids 28' of hot and cold inlet openings 21',23' need not be shifted toward the cold water setting.
In the example shown chain-dotted in FIG. 9A, both means to achieve hydraulic asymmetry are adopted, that is, centroids 28 are shifted ~oward the cold water setting, and the port areas of inlet openings 21,23 differ in size, the lengthwise extent of inlet opening 21 for hot water being greater than that of inlet opening 23 for cold water. Note that inlet opening 23 is kidnèy-shaped and has its internal edge 32 drawn inward.
As previously mentioned, the embodiments represented and described are merely examples of the embodiment of the invention, and the latter is not limited thereto, rather, still other possibilities are available within the scope of the invention, especially regarding the special design and positions of the inlet openings. Thus,the centroid of the port area of inlet opening 23 for cold water might alone be shifted a few degrees of angle toward the cold water setting.
The term "comfort zone" generally relates to the range of mixed water temperatures from between about 35 and 45C. Also, within this comfort zone, a comparatively wide swing of the operating lever should bring about only a comparatively small variation in mixed water temperature.
Lastly, it is to be pointed out that a mixing valve, according to the invention, where the hot water inlet is largPr than the cold water inlet, may alternatively be embodied as a two-handle valve, having two shut-off valves for hot and cold water. Such shut-off valves may al50 have disc-like control elements, the inlet port of the shut-off valve for hot water being larger than that of the cold water shut-off valve.

Claims (5)

1. A single-handle mixing valve adapted to be used in combination with an in-line flow heater, said mixing valve comprising: valving means having at least two discs, one of which is in the form of a fixed valve seat having an outlet opening and hot and cold water inlet openings, the other of said discs, arranged in face-to-face sealing contact with said valve seat disc, is shiftably mounted thereon, said movable disc having a chamber formed therein, said chamber adapted to selectively cover and uncover said hot and cold water inlet openings so that when said movable disc is shifted a few degrees toward the cold water setting, the edge forming the perimeter of said chamber on said movable disc uncovers free flow areas of the hot and cold water inlet chambers that are asymmetrical with respect to each other.
2. The single-handle mixing valve, according to Claim 1, wherein said hot water inlet opening has a greater cross sectional area than said cold water inlet opening.
3. The single-handle mixing valve, according to Claim 1, wherein the inlet opening for cold water is kidney-shaped, the interior edge of the opening being drawn inward.
4. The single-handle mixing valve, according to Claim 1, wherein the lengthwise extent of the inlet opening for hot water is greater than that of the inlet opening for cold water.
5. The single-handle mixing valve, according to Claim 1, wherein the free flow area of said cold water opening is reduced with respect to the corresponding free flow area of said hot water inlet by said edge of the movable disc, so that the centroid of the port area of the inlet opening for cold water is shifted radially in the direction of opening of said edge of said movable disc relative to the inlet opening for hot water.
CA000548603A 1986-10-06 1987-10-05 Sanitary single-handle mixing valve Expired - Lifetime CA1283837C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863633995 DE3633995A1 (en) 1986-10-06 1986-10-06 SANITARY INTERVENTION MIXER TAP
DEP3633995.4 1986-10-06

Publications (1)

Publication Number Publication Date
CA1283837C true CA1283837C (en) 1991-05-07

Family

ID=6311153

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000548603A Expired - Lifetime CA1283837C (en) 1986-10-06 1987-10-05 Sanitary single-handle mixing valve

Country Status (9)

Country Link
EP (1) EP0263811B1 (en)
JP (1) JPH0674851B2 (en)
KR (1) KR920008601B1 (en)
AT (1) ATE72026T1 (en)
BR (1) BR8704934A (en)
CA (1) CA1283837C (en)
DE (2) DE3633995A1 (en)
ES (1) ES2028134T3 (en)
MX (1) MX171292B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2521538Y2 (en) * 1990-04-17 1996-12-25 三菱レイヨン株式会社 Complex faucet for water purifier
HU219026B (en) 1998-03-25 2001-02-28 KEROX-MULTIPOLÁR II. Kft. Mixing-cock-battery with inclined tube and flat disk
JP5736290B2 (en) * 2011-09-28 2015-06-17 株式会社タカギ Hot and cold mixer tap
JP5721061B2 (en) * 2012-03-29 2015-05-20 Toto株式会社 Hot water mixing valve device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH654088A5 (en) * 1981-02-20 1986-01-31 Karrer Weber & Cie Ag MIXING VALVE OF A SANITARY SINGLE LEVER MIXER BATTERY.
JPS5996472U (en) * 1982-12-10 1984-06-30 株式会社イナックス hot water mixing faucet
DE3310080C2 (en) * 1983-03-21 1986-07-24 Ideal-Standard Gmbh, 5300 Bonn Mixing valve
GB2153047B (en) * 1984-01-18 1986-09-03 Damixa As A single-handle mixer tap
DE3411447A1 (en) * 1984-03-28 1985-10-03 Ideal-Standard Gmbh, 5300 Bonn SANITARY SINGLE-HAND MIXER TAP
JPS6339490Y2 (en) * 1984-11-26 1988-10-17

Also Published As

Publication number Publication date
EP0263811A2 (en) 1988-04-13
DE3633995C2 (en) 1991-07-04
DE3776253D1 (en) 1992-03-05
KR920008601B1 (en) 1992-10-02
DE3633995A1 (en) 1988-04-14
ATE72026T1 (en) 1992-02-15
KR880005384A (en) 1988-06-29
EP0263811B1 (en) 1992-01-22
ES2028134T3 (en) 1992-07-01
BR8704934A (en) 1988-05-24
EP0263811A3 (en) 1989-01-18
JPS63101586A (en) 1988-05-06
JPH0674851B2 (en) 1994-09-21
MX171292B (en) 1993-10-18

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