73 results about "Thermostatic mixing valve" patented technology

A mixing valve receives fluid from a first source and fluid from a second source and outputs a mixture of the fluids. The mixing valve includes a valve body including a first fluid inlet, a first fluid chamber, a second fluid inlet, a second fluid chamber, and a fluid outlet. The mixing valve further comprises a fluid flow regulator mounted within the housing, wherein a lower surface of the fluid flow regulator is disposed within the first fluid chamber and an upper surface of the fluid flow regulator is disposed within the second fluid chamber. The fluid flow regulator is mounted within the valve body in such a way as to permit movement of the fluid flow regulator along a longitudinal axis of the valve body. The fluid flow regulator includes a central hub which extends below the lower surface into the mixing chambr. A temperature-sensing device is mounted to the central hub of the fluid flow regulator and is constructed and arranged for sensing a temperature of fluid which flows from the mixing chamber to the outlet.

In various aspects, the present application describes a tankless liquid heater receiving liquid at an inlet and providing heated liquid at an outlet. The tankless liquid heater may include a heating element for heating liquid received from the inlet. A flow sensor indicates the flow rate of the liquid received by the heating element. The heater includes a temperature sensor measuring the temperature of liquid exiting the heating element. A controller of the heater regulates the amount of electrical current energizing the heating element responsive to the flow sensor and the temperature sensor, energizes the heating element when the flow rate of the liquid exceeds a predefined value and prevents energizing the heating element when the heated liquid exceeds a predefined temperature. The heater may also include a thermostatic mixing valve for mixing the heated liquid with liquid diverted from the inlet responsive to the temperature of the heated liquid.

A thermostatic mixing valve (TMV) including a low-flow passageway and a high-flow passageway connecting a mixing chamber and a sensing chamber, and a check valve received in the high-flow passageway adapted to open and allow additional flow from the mixing chamber to the sensing chamber upon fluid flow through the valve rising to at least a predetermined high flow rate. The TMV accommodates a wide range of flows yet does not allow excess flow to bypass the sensing chamber which contains a thermal motor of the valve. Even at high flow rates, therefore, the TMV accurately mixes fluid.

A thermostatic mixing valve (TMV) having a mixing chamber with a plurality of pockets defined therein. The mixing chamber receives cold water flow and hot water flow that has been passed through respective flow inlets and mechanically forced into the pockets defined within the chamber due to axial movement of the plunger. As the hot and cold flow moves into and out of the pockets, the flow streams disperse rather than being maintained in separate flow streams toward the thermostatic element. Because of the increased agitation, the thermostatic element is therefore able to sense a more accurate mixed flow temperature even at low flow rates.

The invention provides a thermostatic mixing valve for use within a water discharge fixture. The mixing valve comprises a cover defining an interior region, a stationary lower disk residing within the interior region, and a moveable upper disk. The lower and upper disks each have a central opening and at least one peripheral groove, wherein the grooves are alignable to form a peripheral water outlet. The mixing valve also includes a spindle assembly extending through the cover region and operably connected to the upper disk to enable alignment of the grooves and formation of the water outlet. A pressure relief cavity is formed between the spindle assembly and the cover, and wherein water flows through an opening in the spindle assembly and into the relief cavity. In order to reduce friction during operation of the valve, the water in the pressure relief cavity applies downward pressure to the spindle assembly which counter-balances upward pressure applied to the spindle assembly by water flowing through the lower and upper disks. The mixing valve further includes a slide bolt and a mixer, wherein depending upon the selected discharge water temperature, water from the cold and hot water cavities flows through the slide bolt into the mixer for subsequent discharge through the fixture.

A thermostatic mixing valve for hot and cold water has a valve member for controlling the relative proportions of hot and cold water admitted to a mixing chamber according to user selection of a desired water temperature and a thermostat responsive to the mixed water temperature to adjust the position of the valve member to maintain constant the selected water temperature. The valve member is biased by a return spring in the form of a wave spring having a plurality of turns with transverse waves configured such that adjacent turns sit peak to peak. The wave spring is strong in compression and weak in torsion allowing the ends of the spring to move laterally to accommodate any misalignment in the components of the valve.

A thermostatic mixing valve including a cold water bypass passageway controlled by a pressure-operated check valve that opens upon a failure of a hot water supply to the valve. The valve is particularly for use with safety devices, such as eyewash and drench shower stations, and allows the continued delivery of cold water upon a failure of a hot water supply. The lack of hot water causes a cold water valve opening to be closed by a thermal motor, which retracts upon the lack of hot water, yet the bypass passageway is adapted to allow cold water to bypass the thermal motor-controlled cold water valve opening and be directed to the outlet of the valve.

A thermostatic mixing valve for hot and cold water has two-stage inlet chambers for the hot and cold water flows respectively. The inlet chambers distribute the flows uniformly with respect to porting for admitting the flows to the mixing chamber to reduce asymmetric flow patterns and promote thorough mixing of the flows within the mixing chamber.

An adjustable height housing enables a thermostatic mixing valve (TMV) with a dial permitting manual control of bathtub shower water temperature to be vertically mounted in a horizontal bathtub deck. The housing can be installed on a narrow bathtub rim yet also accommodates substantial substrate thickness of bathtub decks where required. Manual adjustment of hot and cold ring stops is performed from the top-side using only a screwdriver to gain access. The housing includes a long threaded outer sleeve which extends from near the top deck surface to the thermostatic mixing valve (TMV) cartridge body housing below, thereby accommodating any deck thickness from a 1 / 16 inch thick stainless steel tub edge to a compound deck construction up to 2¾ inches thick. The rotatable temperature dial is coupled to a cap rotatable by the adjustment handle which, in turn, rotates an adjustable extension shaft within the housing.

A frictionless, pressure balanced proportioning valve assembly, for low power electric operated thermostatic cartridge, composed of a housing with spaced apart hot and cold water inlets and intermediate mixed water outlet, flow communicated to a spool bore with a central widened portion; a spool, guided in the spool bore, by widened end portions, is carrying a central widened disk portion, separating the spool bore into two tubular inlet chambers; two diaphragm seals disposed at both ends of the spool and housing, pressure balancing the inlet chambers; a temperature sensor, exposed to the mixed water outlet pathway, generates a signal, readable by a control circuit; a drive unit energized by a low power electric motor, driving past gear train and eccentric shaft, a bendable connecting rod, axially displacing the spool. Axial displacement of the balanced friction-free spool, proportions flow from the hot and cold water inlets to the mixed water outlet.

A thermostatic mixing valve 10 including a valve body 11 having a first fluid 12 inlet, a second fluid inlet 13 and a mixed fluid outlet 14, a mixing chamber 16 located between the respective fluid inlets 12,13 and the fluid outlet 14. A thermostatic element 15 is located for exposure to mixed fluid and a piston 17 is arranged for movement within the valve body in response to expansion or contraction of the thermostatic element 15. The piston 17 throttles flow of fluid through the first fluid inlet 12 into the mixing chamber 16 by varying its position relative to a first seat 33, and through the second fluid inlet 13 into the mixing chamber 16 by varying its position relative to a second seat formed as a bore 35 into which the piston 17 can progressively enter. Progression of the piston 17 into the bore 35 initially results in a substantial throttling of the flow of fluid from the second fluid inlet 13 into the mixing chamber 16, while further progression results in engagement between the piston 17 and the second seat 35 to terminate the flow of fluid from the second fluid inlet 13 into the mixing chamber 16.

A constant temperature mixed valve core includes a fluid switch control unit and a thermostatic control unit, wherein, the fluid switching control unit is connected together with the thermostatic control unit through a temperature conditioning mechanism of the thermostatic control unit; the fluid switching control unit includes a shell of a determined internal area, a fixed lower ceramic chip arranged in the internal area and provided with a center trepanning and at least one grooving, and an upper ceramic chip arranged in the shell internal area, rotatable on the lower ceramic chip and provided with a center trepanning and at least one grooving; a temperature regulation mechanism perforates the center of the shell and combines with the upper ceramic chip to perform operations, drives the ceramic chip to move so that the grooving of the upper ceramic chip is supposed with the grooving of the lower ceramic chip to form a state that the outside water outlet is open. The fluid switching regulator control unit is used to control the mixed water that has been completely mixed evenly and reaches the setting temperature, adjusts the opening angle of the control switch to control the output water flow of the mixed water that has been completely mixed evenly and reaches the setting temperature and the open and shut of the water output, which has features of easy modulation and long service life.

The invention relates to a thermostatic mixing valve in which the access path of the hot water to the mixing chamber is completely formed within a bottom base (2) and the ceramic disks (4, 5) of the valve group, the slider (8) of the thermostatic member sealingly sliding in a central seat of the upper disk (5). By having the hot water not pass through the metallic members of the valve it is possible to eliminate the problems of asymmetric thermal expansion of said metallic members when only hot water is delivered, and also to greatly reduce the problems of calcareous encrustations since the latter build up with difficulty on the ceramic material. Furthermore, the valve is manufactured with a compact and simplified structure, including a small number of pieces, with totally independent temperature and flow rate controls.

A thermostatic mixing valve has an enhanced response to temperature change by arranging one of the hot water and cold water flows into a series of jets that intersect the other flow such that the proportions of hot water and cold water mixing at the surface of the thermostat is made to respond to the inlet water pressure to augment the temperature change normally experienced at the surface of the thermostat.

Thermostatic mixing valve has a valve body, a cold fluid inlet, a hot fluid inlet, and a fluid outlet. Mixing chamber is located between the respective fluid inlets and the fluid outlet. Thermostatic element is located in or adjacent to the mixing chamber and is arranged to contact a piston at one end and via a mixing tube the valve body at the other end. Piston regulates flow through the fluid inlets into the mixing chamber. The piston is can move due to continued expansion of the thermostatic element after the piston has closed off the second fluid inlet. Valve body has an internal thread with which a thread on mixing tube permits adjustment of the relative position of the thermostatic element within the valve body and hence the set temperature of the thermostatic mixing valve.

A thermostatic mixing valve for mixing cold water and hot water and for setting a mixed water temperature, having an electric motor that is controllable by a control unit and acts via a gear stage on a valve body, which is stroke-adjustable over a setting range and with which the mixing ratio between hot and cold water can be varied depending on a target mixed water temperature, presettable on the user side, and having a sensor element for detecting at least one set position in the setting range of the thermostatic mixing valve. The gear stage has a linearly adjustable linear displacement element, arranged rotationally fixed and provided between the electric motor and the valve body, and the sensor element works together with the linear displacement element to detect the set position.

Mixing valve turbulence generators and methods are disclosed. Embodiments include turbulence generation apparatuses and methods that increase the turbulence of, impart swirl to, reverse the direction of, create tortuous paths for, and / or accelerate the mixing of hot and cold fluid within a valve assembly. Alternate embodiments include angled radial slots, angled surfaces and fin-like baffles to enhance the mixing of hot and cold fluids.

The invention relates to a thermostatic mixing valve comprising a hollow body having a first inlet, a second inlet, and an outlet in fluid communication with the first inlet and / or the second inlet via a mixing chamber. The flow through the valve is controlled by an axially extending thermostatic actuator comprising a stem, an enlarged portion and a heat sensitive bulb, said bulb extending into the mixing chamber. The thermostatic actuator is axially displaced between a first end position in which only the first inlet is connected to the outlet and a second end position in which only the second inlet is connected to the outlet. The thermostatic actuator is displaced in a sleeve member arranged to restrict the flow of water from the second inlet past the enlarged portion of the thermostatic actuator during its axial displacement until the thermostatic actuator reaches the second end position.

The invention concerns a thermostatic mixer valve for hot and cold water, which comprises a rotary delivery regulator device (15), a thermostatic bulb (17) positioned coaxially to said regulator device, and a mixer control device (16) working in conjunction with the thermostatic bulb. The delivery regulator device (15) and the mixer control device (16) with relative thermostatic bulb (17) are assembled and housed ready to operate in a cartridge body (10) inserted as a whole in a tap body which has means of transporting hot and cold water towards a mixer chamber and means of delivering the water towards the user point.

A freestanding or Roman bathtub plumbing system including a bathtub filler (such as a spout and / or hand-held shower) controlled by a compact thermostatic mixing valve. The thermostatic mixing valve is installed in a bathtub plumbing set having a hand-held shower accessory. The thermostatic mixing valve receives hot and cold water from the main hot and cold water inlet pipes, respectively, located upstream of the respective hot and cold water control valves used to control the supply of water to the fillers. The hot and cold water feed pipes are each hydraulically connected to a first respective hot and cold water inlet of the thermostatic mixing valve. The bathtub fillers are hydraulically connected to the outlet of the thermostatic mixing valve, such as by a pipe or flexible hose. Hot and cold water entering the thermostatic mixing valve are mixed therein independently; water exiting the thermostatic mixing valve is characterized by a predetermined maximum temperature, such that a tub occupant will not be accidentally scalded.

A thermostatic mixing valve is used in a tempered water blending system. A cold water bypass line in the system acts under the control of a modulating valve and electronic controller to divert cold water back to a temperature sensing element in the mixing valve. By flooding the temperature sensing element, the mixing valve detects a false temperature and adjusts its flow rate of hot and cold water accordingly. The electronic controller acts in reverse of normal fashion, providing negative feedback to the sensing element of the mixing valve.

A compact and low-cost mixing faucet for liquids of different temperatures is proposed that allows fine and accurate adjustment of the volume and temperature of the mixed outflow by single-handed operation. The mixing faucet is suitable for use of a ceramic perforated plate and / or thermostatic mixing valve. The actuation quantities can be converted by torque converters to rotational control variables in an ergonomically optimum type, magnitude and / or positioning of movement, such that both rotational control variables can be selectively adjusted when manually operated by accessing from a permanent direction of access. The hand position enables actuation of the faucet with only two fingertips, with torque limitable up to any degree of smoothness and a large angle of rotation at the associated rotary actuator. The rotational control variable for the outflow volume can be made ergonomically easier to reach and adjust from the direction of access.

A thermostatic mixing valve unit in an emergency wash unit has an integrated housing with cold and hot water inlets each having an associated check valve, and a tempered water discharge having a thermostat for cold / hot water mixing to provide a predetermined tempered water discharge. A high temperature limit valve responds to the water discharge temperature to permit or prevent hot water inflow when the water discharge exceeds a preset temperature. A cold water bypass valve is coupled by a diverter valve to the lower of the cold and hot water supply pressures to maintain a substantial water discharge flow when the high temperature limit valve restricts hot water flow or when the hot water check valve is stuck closed, or upon failure of the cold water supply as by sticking of the cold water check valve in a closed position or by a clogged filter screen.

A fluid mixing valve for producing a mixed fluid stream from first and second inlet fluid streams having different, varying temperatures, and having different, varying pressures, the mixed fluid stream having a substantially stable, preselected temperature of a magnitude between the temperatures of the first and second inlet fluid streams, the fluid mixing valve including a housing and a mixing regulation assembly disposed within the housing. The invention also provides a method for producing a mixed fluid stream from first and second inlet fluid streams having different, varying temperatures, and having different, varying pressures, the mixed fluid stream having a substantially stable, preselected temperature of a magnitude between the temperatures of the first and second fluid streams.

A thermostatic valve for mixer taps comprising a body provided with a chamber for mixing water, is described. Inflowing side openings for separately inflowing hot water and cold water to the mixing chamber are provided at different heights of the body. Automated means for regulating the flow rates of hot water and cold water operate to intercept the inflowing side openings. The automated means comprise in their turn a thermostatic bulb operating in the mixing chamber and a movable piston to feedback close completely or partially, and selectively, the inflowing side openings in response to the expansions the thermostatic head is subjected to. The valve body comprises a first quick—coupling portion shaped so as to mechanically and fluidically couple with a pressure regulator adapted to regulate the flows of hot water and cold water.

Mixing valve turbulence generators and methods are disclosed. Embodiments include turbulence generation apparatuses and methods that increase the turbulence of, impart swirl to, reverse the direction of, create tortuous paths for, and / or accelerate the mixing of hot and cold fluid within a valve assembly. Alternate embodiments include angled radial slots, angled surfaces and fin-like baffles to enhance the mixing of hot and cold fluids.

A thermostatic mixing valve includes a body (1), inlets (2) and (3) for intake of hot water and cold water and a discharge outlet (4) for delivery of mixed water. A mixing chamber (7) is within the body (1) and is defined by a perimeter wall member (8) that houses a slide valve (9) which slidably moves in the mixing chamber so as to control the opening and closing of the inlets to the mixing chamber (7). A thermostatic element (18) is mounted to control motion of the slide valve (9). A partition (10) is mounted in the mixing chamber (7) between the inlets. A cross passage (11) allows water from one inlet to pass the partition toward the discharge outlet (4). The mixing chamber has an inclined surface (14) to direct water from the other inlet toward the cross passage to promote mixing of the hot and cold water.

The invention discloses a gas water heater. The gas water heater comprises a shell, an electronic thermostatic mixing valve, a combustion device, a water tube and a controller, wherein a hot water outlet, a cold water inlet, a gas inlet and a smoke outlet are formed in the shell; the electronic thermostatic mixing valve is arranged in the shell; a first inlet, a second inlet and an outlet are formed in the electronic thermostatic mixing valve; the combustion device comprises a combustion cavity and a combustor arranged in the combustion cavity; the water tube is arranged in the shell; two ends of the water tube respectively communicate with the cold water inlet and the second inlet; at least one part of the water tube is wound on the outer peripheral surface of the combustion cavity so that heat exchange between the water tube and the combustion cavity is implemented; and the controller is arranged in the shell and is electrically connected with the electronic thermostatic mixing valve and the combustor. According to the gas water heater of an embodiment of the invention, the temperature of drained water can be convenient to adjust and can be constant, the gas water heater is convenient to control and adjust, the number of parts is small, and the cost is low.

A fluid mixing valve for producing a mixed fluid stream from first and second inlet fluid streams having different, varying temperatures, and having different, varying pressures, the mixed fluid stream having a substantially stable, preselected temperature of a magnitude between the temperatures of the first and second inlet fluid streams, the fluid mixing valve including a housing and a mixing regulation assembly disposed within the housing. The invention also provides a method for producing a mixed fluid stream from first and second inlet fluid streams having different, varying temperatures, and having different, varying pressures, the mixed fluid stream having a substantially stable, preselected temperature of a magnitude between the temperatures of the first and second fluid streams.