US2980333A - Fluid mixing devices - Google Patents

Fluid mixing devices Download PDF

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Publication number
US2980333A
US2980333A US717501A US71750158A US2980333A US 2980333 A US2980333 A US 2980333A US 717501 A US717501 A US 717501A US 71750158 A US71750158 A US 71750158A US 2980333 A US2980333 A US 2980333A
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US
United States
Prior art keywords
spigot
well
extension
valve
cover
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
US717501A
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English (en)
Inventor
Clifford L Barker
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.)
Kohler Mira Ltd
Original Assignee
Crosweller & Co Ltd W
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 Crosweller & Co Ltd W filed Critical Crosweller & Co Ltd W
Application granted granted Critical
Publication of US2980333A publication Critical patent/US2980333A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1306—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids
    • G05D23/132—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element
    • G05D23/134—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of mixed fluid
    • G05D23/1346—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of mixed fluid with manual temperature setting means

Definitions

  • This invention has reference to fluid mixing devices of the kind wherein two separate streams of fluid at different temperatures (such as hot water or steam and cold water) are adapted to be fed into the device through corresponding inlets and, after passing through a valve which determines the relative proportions of the two streams flowing therethrough, to be mixed in a chamber in which a thermosensitive element is housed so that the said element is influenced by the temperature of the resulting mixture and, as a consequence, is adapted to alter the setting of the valve and thereby vary the said relative proportions should the temperature of the mixture depart from a preselected value.
  • two separate streams of fluid at different temperatures such as hot water or steam and cold water
  • the principal object of the present invention is to overcome or minimise the possibility of a mixing device being put out of commission for any considerable period as a consequence of the development of a fault in its operative component parts.
  • Figure 1 is a sectional elevation of a 'fluid mixing device
  • Figure 2 is an exploded view, partly in section, of the device shown in Figure 1.
  • the device shown in the drawing is intended for mixing a streamof hot water with a stream of cold water to provide a mixture which is at any preselected temperature within maximum and minimum limits.
  • the device comprises a base 1 having two coaxial and V tapped'inlet passages 2, 3, of which the outer ends open to opposite sides of the base so that a cold water supply
  • Thecrown of the base is of cup shape and an annular pipe (also lip 4 projecting. upwardly from and located concentrically of the floor of the cup, forms a well 5 in the bottom of which there is a concentric port 6 which opens to the interior of the well and the inner end of the pasage 2.
  • the mouth of an inverted cup-shaped cover 8 sockets into the mouth of the base 1 and the cover is detachably secured to the said base in any known and convenient manner (not shown).
  • the interiors of the cup-shaped crown of the base and of the cover form a mixing chamber 9 from which the discharge orifice opens and in which a unit, comprising a fluid-proportioning valve 10 and a thermosensitive element 11, is detachably mounted.
  • the fluid proportioning valve consists of a cylindrical spigot 12 which serves as the inner and non-rotatable member of the valve and a ported sleeve 13 which is a rotatable fit around the spigot and serves as the moveable member of the said valve.
  • the spigot is provided at and around its lower end with an enlarged diameter portion 14 of which the upper edge serves as a seat for the adjacent lower edge of the sleeve 13.
  • the lower end face of the spigot is provided with a co-axial extension 15 and a blind fluid inlet passage 16 formed in and concentrically of the said extension, extends through the extension and along the spigot to a position just beyond a first group of radial passages 17 (of which one is shown in Figure 1) extending from the said blind passage to the spigot periphery.
  • a blind annular fluid inlet passage 18, formed in the spigot around and concentrically to the passage 16 extends from the said lower end face where it opens into the well 5, to a position short of the radial passages 17 where it communicates with a second group of radial passages 19 (of which one is shown in Figure 1) extending from the said blind passage to the spigot periphery.
  • the two groups of radial passages are spaced apart lengthwise of the spigot, the passages of each group are located in a common plane transversely of the spigot and are spaced at equiangular distances apart, and each passage in one group is located between two passages of the other group.
  • valve sleeve 13 is formed with two groups of ports 20 and 21 each group being located in the same transverse plane as a corresponding one of the two groups of radial spigot passages; the relative arrangement of radial passages and ports is such that when (as shown in the drawing) each port 21 is in register with the outlet end of a corresponding radial passage 19 of the passage group in the same plane, all the ports 24 ⁇ are completely out of register with the radial passages 17 so that water supplied to the device through the inlet passage 3 may flow at full bore into the chamber 9, whereas the flow of water through the inlet passage 2 is cut ofl.
  • thermosensitive element 11 rotary'movement of the valve sleeve by the thermosensitive element 11, takes the group of ports 21 gradually out of register with their corresponding radial passages 19, and as thistakes place the ports 20 commence to move into register with their corresponding passages 17 with the result that the flow of Water through the inlet passage 2 is initiated and increased gradually at the expense of the flow through the outlet passage 3 which is gradually reduced until it is out off. 7
  • a peripheral groove is formed in and around the enlarged diameter portion 14 of the spigot, another peripheral groove is formed in and around the co-axial projection 15 and a'resilient ring 22 and 23 respectively is accommodated in each groove, the said rings having crosssectional diameters greater than the depths of their respective grooves.
  • the other and upper coil hub 29 is formed with a concentric upwards extension 31 having a peripheral groove formed therein, the said groove also being engaged by a resilient ring 3-2 of greater cross-sectional diameter than its depth.
  • the spindle enters a blind axial bore in theupper coil hub, and is secured within the said 'borelby two parallel pins 33 which pass through the hub tangentially to, and engage in, the spindle groove ZS so that relative longitudinal movement is prevented, but relative rotational movement is permitted, between the hub 29 and spindle 24;
  • the resilient ring 35' in the extension 31 from'the upper coil hub enables the said extension, when inserted into an aperture '35 in the crown of the cover 8 to efiecta emovablyseated in said baseand communicating with said passages the interior of saidbase'and cover forming a mixing chamber, a control handle removably connectedto' said cover, a spindle detachably-connected between said handle and said mixing mechanism forvarying the base and wherein the, said spigot end sockets into.
  • a device as claimed in cla m I, he; spigot extension 7 and the adjacent end of the spigot are each formed with fluid tight joint with'the said cover and also enables the said joint to be made or broken by a simple'manual push or pull action; as shown in Figure l: the "cover crown 1 seats upon a peripheral shonlder fl on the hub extension 31, when the said joint is made and the cover is' assembled a to the base ⁇ . 2
  • Thesaid upwards extension 31 is of a length greater 1, fthan' theth'ickness of the cover crownand, therefore] f-roje cts' beyond the" 'said;crown to the exterior of the device, where a handle or knob ⁇ ? is assembled amide-1 hebl Shouldany fault develop in the proportioningvalve1t?, j v or the-thermosensitive elementl-i, it'isonly necessary to] disconnect the; cover irom'jthe ,basefofithe device ,I
  • V I g j a peripheral: groove and afsealing ring accommodated in the said groove effect respectively. fluid tight joints between the spigot and theyvall oflthe' well fand'between the spigot extension and the port in the bottomof thesaid well.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Multiple-Way Valves (AREA)
US717501A 1957-02-26 1958-02-25 Fluid mixing devices Expired - Lifetime US2980333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6338/57A GB889274A (en) 1957-02-26 1957-02-26 Improvements in or relating to fluid mixing devices

Publications (1)

Publication Number Publication Date
US2980333A true US2980333A (en) 1961-04-18

Family

ID=9812671

Family Applications (1)

Application Number Title Priority Date Filing Date
US717501A Expired - Lifetime US2980333A (en) 1957-02-26 1958-02-25 Fluid mixing devices

Country Status (5)

Country Link
US (1) US2980333A (fr)
BE (1) BE565162A (fr)
CH (1) CH363209A (fr)
FR (1) FR1199381A (fr)
GB (1) GB889274A (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180362A (en) * 1937-10-25 1939-11-21 Frederick C Leonard Manufacture of thermostatic mixing valves
US2199129A (en) * 1938-02-04 1940-04-30 Frank E Hamilton Mixing valve
US2319418A (en) * 1939-07-08 1943-05-18 Dole Valve Co Mixing device for mixing hot and cold liquids
US2471725A (en) * 1946-08-07 1949-05-31 Walter B Clifford Mixing valve
US2691487A (en) * 1952-04-04 1954-10-12 Leonard Valve Company Combination thermostatic mixing and shutoff valve construction
FR1118475A (fr) * 1953-12-18 1956-06-06 Crosweller & Co Ltd W Perfectionnements aux mélangeurs de fluides

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180362A (en) * 1937-10-25 1939-11-21 Frederick C Leonard Manufacture of thermostatic mixing valves
US2199129A (en) * 1938-02-04 1940-04-30 Frank E Hamilton Mixing valve
US2319418A (en) * 1939-07-08 1943-05-18 Dole Valve Co Mixing device for mixing hot and cold liquids
US2471725A (en) * 1946-08-07 1949-05-31 Walter B Clifford Mixing valve
US2691487A (en) * 1952-04-04 1954-10-12 Leonard Valve Company Combination thermostatic mixing and shutoff valve construction
FR1118475A (fr) * 1953-12-18 1956-06-06 Crosweller & Co Ltd W Perfectionnements aux mélangeurs de fluides

Also Published As

Publication number Publication date
BE565162A (fr) 1958-03-15
CH363209A (de) 1962-07-15
FR1199381A (fr) 1959-12-14
GB889274A (en) 1962-02-14

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