WO1994015129A1 - Hot and cold water mixing apparatus - Google Patents
Hot and cold water mixing apparatus Download PDFInfo
- Publication number
- WO1994015129A1 WO1994015129A1 PCT/JP1993/001933 JP9301933W WO9415129A1 WO 1994015129 A1 WO1994015129 A1 WO 1994015129A1 JP 9301933 W JP9301933 W JP 9301933W WO 9415129 A1 WO9415129 A1 WO 9415129A1
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- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- water
- hot
- spring
- movable valve
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
-
- 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
- G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
- G05D23/024—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being of the rod type, tube type, or of a similar type
- G05D23/025—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being of the rod type, tube type, or of a similar type the sensing element being placed within a regulating fluid flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
-
- 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
-
- 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
- G05D23/1353—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 combined with flow controlling means
Definitions
- the present invention relates to a hot and cold water mixing apparatus, and more particularly to a hot and cold water mixing apparatus that urges a movable valve body to mix hot and cold water using a spring made of a material whose spring constant changes with temperature.
- a movable valve body which controls the mixing ratio of hot water and water is urged using a shape memory alloy whose shape changes depending on temperature, thereby keeping the temperature of the hot water mixture constant.
- a thermostatically controlled hot and cold water mixing faucet to be controlled (Japanese Utility Model Publication No. 61-44062). This is because when a shape memory alloy is set to a certain shape at a specific temperature, it gives the initial set temperature even if it changes its shape physically at other temperatures. It has the characteristic of restoring the shape when set again, and utilizes the fact that it has a smaller heat capacity than conventional thermosensitive elements, such as a wax thermometer, and operates more sensitively to temperature changes. .
- This mixer tap is configured so that one of the movable valve elements is urged by a coiled shape memory alloy and the other is urged by a coil spring, and the coiled shape memory alloy is in direct contact with the hot and cold water mixture. It is arranged to be C. Further, the coil-shaped shape memory alloy is said to have a constant coil length at a constant temperature, and the coil-shaped shape memory alloy is supposed to operate as follows due to a change in the temperature of the hot and cold water mixture.
- the movable valve body When the temperature of the hot and cold water mixture is in a steady state at the set temperature, the movable valve body is stopped at a position where the coiled shape alloy and the coil spring are balanced.
- the coil-shaped shape memory alloy attempts to restore the coil length set at that temperature to the shape-restoring force. Occurs. This shape restoring force breaks the balance with the coil spring, which was in a steady state, and causes the movable valve body to be in the coil spring side or coil shape memory. Drive to the alloy side.
- the temperature of the hot and cold water mixture changes with the coil shape when the temperature near the set temperature changes.
- Memory alloys change the coil length with changes in temperature and generate a continuous shape restoring force. Accordingly, the movable valve body is displaced in accordance with the temperature change of the hot and cold water mixture, and changes the ratio of hot and cold water, so that the temperature of the hot and cold water mixture can be maintained at the set temperature.
- the shape memory alloy since the shape memory alloy is generally expensive, it is preferable to form the shape memory alloy with a small number of materials.
- a temperature-sensitive spring made of a small amount of material has a smaller spring constant than an ordinary spring, and does not drive the movable valve element with a large driving force. Therefore, with such a temperature-sensitive spring having a small spring constant, the supporting force on the movable valve body is weak, and even if a slight twist or the like is applied, the movable valve body is inclined, and the sealing performance is reduced. For this reason, there was a problem that the water discharge temperature could not be adjusted with high accuracy.
- the shape memory alloy spring reacts sensitively to the temperature of hot and cold water, if high-temperature water and low-temperature water come into contact with each other in a state where they are not sufficiently mixed, the load generated at each part will be different and stable. There was also a problem that temperature spouting could not be performed.
- An object of the present invention is to provide a hot and cold water mixing apparatus that can stably discharge water at a target set temperature even when a temperature-sensitive spring made of a shape memory alloy having a small spring constant is used.
- the present invention has been made to achieve the above object,
- a casing body having a hot-water port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole and adjusting a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of hot water;
- one end of the spacer has a valve pressing portion that contacts a movable valve body, and the other end of the spacer supports one end of a temperature-sensitive spring. It has a spring receiving part.
- the valve pressing portion of the spacer may be configured as a plurality of legs protruding from the spring receiving portion and provided at a predetermined gap along the inner periphery of the movable valve body. A part of the leg is disposed so as to face the water-side port.
- the leg may be formed as a fin that turns the low-temperature water flowing out of the water-side port in the circumferential direction.
- the fins are arranged on the circumference and 6 to 8 pieces are provided at equal intervals in the circumferential direction.
- the fins are arranged on the circumference and arranged at a longer interval in the circumferential direction as the distance from the water-side port increases.
- a casing body having a hot-water port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole and adjusting a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a diversion member provided at a portion facing the water-side port and diverting low-temperature water flowing out of the water-side port; It is characterized by having.
- the low-temperature water flowing out of the water-side port is formed in a fin that changes a circumferential direction.
- a casing body having a hot-water-side port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole to adjust a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a flow dividing member provided at a portion facing the hot water side port and configured to split high temperature water flowing out of the hot water side port;
- the flow dividing member is integrated. Further, as one mode of the flow dividing member, the flow dividing member is formed as a fin that changes the flow of high-temperature water flowing out of the hot water side port in the circumferential direction.
- Another invention is
- a mixing chamber communicating with a hot-water port or a water-side port for discharging high-temperature water and low-temperature water, respectively;
- a movable valve body for controlling the inflow of high-temperature water and Z or low-temperature water discharged from both ports to adjust the mixing ratio of high-temperature water and low-temperature water;
- a temperature-sensitive spring that is exposed to a mixture of hot and cold water mixed in the mixing chamber and changes a spring constant according to a temperature of the mixed hot water
- the driving means has a configuration in which one end of a temperature-sensitive spring is fixed and the other end biases the movable valve element. Further, a bias spring for biasing the movable valve element is provided, and a preload adjusting mechanism for adjusting a preload to the bias spring is provided. Further, as another aspect, the present invention includes a casing body forming a movable valve body, a valve chamber accommodating a temperature sensing spring and a bias spring, and a mixing chamber, and the casing body is provided with a water-side port or a hot-water port. It is formed so as to be detachable from the provided member. Further, the flow dividing member is formed integrally with the wall surface of the casing body.
- a spacer is provided between the movable valve element and the temperature-sensitive spring, and the diverter is provided in the spacer.
- Such a spacer includes a guide member slidably abutting at a plurality of locations on an inner wall surface of the casing body facing the mixing chamber.
- Another invention is
- a casing body having a hot water-side port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole and adjusting a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a tubular flow path forming member disposed inside the temperature sensitive spring and forming a spring flow path chamber for accommodating the temperature sensitive spring between the inner wall of the casing main body;
- a spring chamber introduction path for introducing mixed hot water mixed with high-temperature water from the hot-water port and low-temperature water from the water-side port into the spring flow chamber;
- a spacer for interposing a high-temperature water and a low-temperature water at a predetermined distance from a position where the temperature-sensitive spring is interposed between the spring and the flow path forming member and the spring chamber introduction path. are doing.
- the spring chamber introduction path has a constriction, and has a guide portion formed at one end of the spacer and diverging from upstream to downstream.
- One embodiment of the flow path forming member includes a temperature sensitive spring receiving member having a spring receiving portion for receiving the other end of the temperature sensitive spring, and the flow path forming member is formed in the temperature sensitive spring receiving member.
- a flow path resistance portion for stirring the mixed hot and cold water is formed.
- One aspect of the flow path resistance portion is a spiral projection formed on the spring flow chamber side of the flow path forming member, or a spiral projection formed on an inner wall surface of the casing body.
- a caging body having a hot-water port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole and adjusting a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a temperature-sensitive spring receiving member having a spring-receiving recess formed in accordance with the shape of the end of the temperature-sensitive spring
- the temperature-sensitive spring receiving member examples include a split member having a spiral groove of the temperature-sensitive spring, insert molding of the end face of the temperature-sensitive spring with resin, and a method of forming the movable valve body and the temperature-sensitive spring. This can be realized by integrally forming a temperature-sensitive spring at a predetermined distance from a position interposed between the high-temperature water and the low-temperature water and mixing the same.
- a casing body having a hot-water-side port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole and adjusting a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a flat plate member having a spring receiving portion for supporting an end of the temperature-sensitive spring; a center support portion provided at the center of the flat plate member; A warm spring receiving member,
- One aspect of the center support portion of the temperature-sensitive spring receiving member includes a projection and a supporting recess for supporting the projection.
- the temperature-sensitive spring receiving member includes a central support portion formed of a hard resin, and a spring receiving portion formed of an elastic member.
- a casing body having a hot-water port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole to adjust a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a Pierce spring that urges the movable valve body in a direction opposite to the direction, A flat plate member having a spring receiving portion for supporting an end of the above-mentioned bias spring, and a via-hole swingably supported by the casing body at a center support portion provided at the center of the flat plate member.
- the center support portion of the bias spring receiving member includes a projection and a support recess for supporting the projection.
- the bias spring receiving member includes the central support portion formed of a hard resin, and a spring receiving portion formed of an elastic member.
- a casing body having a hot-water-side port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole to adjust a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a temperature-sensitive spring receiving member having a spring receiving portion for supporting the temperature-sensitive spring, and a valve pressing portion projecting from a central portion of the spring receiving portion and pressing a central portion of the movable valve body in a sliding direction; It is characterized by having.
- a casing body having a hot-water port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a bias spring receiving member having a spring receiving portion for supporting the above-mentioned bias spring, and a valve pressing portion protruding from a central portion of the spring receiving portion and pressing a central portion of the movable valve body in a sliding direction.
- Another invention is
- a casing body having a hot-water-side port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole to adjust a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a movable valve body guide formed through the movable valve body along the sliding direction? L, a guide member fixed to the casing body and slidably fitted in the movable valve body guide hole to support the movable valve body;
- a casing body having a hot-water-side port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole and adjusting a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a guide projection protruding from the opening of the port and in contact with the outer periphery of the movable valve body to guide in a sliding direction;
- One aspect of the guide projection is formed so as to guide the movable valve element inside a binder line formed along the outer periphery of the movable valve element when the movable valve element is seated.
- a casing body having a hot-water-side port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole and adjusting a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a temperature-sensitive spring receiving member having a spring receiving portion that supports an end of the temperature-sensitive spring, and having a cylindrical portion that is inserted and positioned in a sliding hole of the casing body;
- Fixing means for fixing the temperature-sensitive spring receiving member to the casing body
- One embodiment of the fixing means includes a recess formed in the casing main body, and an engaging claw formed in the temperature-sensitive spring receiving member and engaging with the recess. And a cutout formed in the casing body, a cutout formed in the temperature-sensitive spring receiving member at a position corresponding to the cutout, and a thermosensitive element engaged with the cutout and the cutout.
- a water-side valve seat member which is fitted into a sliding hole of the casing body, constitutes a water-side port, and has a water-side valve seat on which the movable valve element is seated It is fixed integrally to.
- a casing body having a hot-water port for discharging high-temperature water and a water-side port for discharging low-temperature water, and having a sliding hole communicating with both ports;
- a movable valve body slidably fitted in the sliding hole and adjusting a mixing ratio of high-temperature water discharged from the hot-water port and low-temperature water discharged from the water-side port;
- a temperature-sensitive spring made of a material whose spring constant changes according to the temperature in a predetermined temperature range, and for urging the movable valve body in a direction to decrease the proportion of hot water in accordance with the rising temperature of the mixed hot water;
- a spring receiving member having a threaded portion to be threadedly engaged with the threaded portion of the casing body, mounted on the open end by threading the two threaded portions, and receiving the temperature-sensitive spring;
- a mixing chamber communicating with a hot-water port or a water-side port for discharging high-temperature water and low-temperature water, respectively;
- a movable valve body for controlling the inflow of high-temperature water and / or low-temperature water discharged from both ports to adjust the mixing ratio of high-temperature water and low-temperature water;
- a temperature-sensitive spring Exposed to a mixture of hot and cold water mixed in the mixing chamber, A temperature-sensitive spring whose spring constant changes according to temperature;
- a cylindrical flow path forming member forming a spring flow path chamber;
- a spring chamber introduction path for introducing mixed hot water mixed with high-temperature water from the hot-water port and low-temperature water from the water-side port into the spring flow chamber;
- One aspect of the present invention includes a bias spring that urges the movable valve body in a direction opposite to the temperature-sensitive spring, and includes a preload adjusting mechanism that adjusts a preload applied to the bias spring.
- a case is provided that includes a movable valve body, a valve body accommodating a temperature sensing spring and a bias spring, and a casing body that forms a mixing chamber. It is formed so as to be detachable from the member.
- the flow dividing member is formed integrally with the wall surface of the casing body.
- the flow path forming member and the spring chamber introduction flow path are integrally formed on the wall surface of the casing body.
- a hot water mixing device that mixes high temperature water and low temperature water and discharges mixed water at a target set temperature by moving a movable valve body by expansion and contraction of a coil-shaped temperature-sensitive spring
- the temperature-sensitive spring has N i and T i as main materials, and a temperature between the transformation start temperature (M s) during cooling and the transformation end temperature (M f) during cooling, M s ⁇ 70 '( :, M f ⁇ 10.C is an alloy in which the relationship between the spring constant and the temperature has a proportional relationship within the range of M s-M f ⁇ l 5 'C,
- n number of coil turns
- D Center diameter of temperature-sensitive spring It is characterized in that the mounting strain r of the temperature-sensitive spring represented by the above equation (1) is used in the range of 0.6 to 1.4%. A preferred embodiment of the mounting strain r is 0.6 to 1.2%. And, more preferably, between 0.6 and 0.8%.
- One mode of imparting mounting strain to the temperature-sensitive spring can be realized by a configuration in which the movable valve body is slidably supported between the temperature-sensitive spring and the bias spring.
- the movable valve element slides in the sliding hole of the casing body, and changes the mixing ratio of high-temperature water and low-temperature water discharged from the hot-water port and the water-side port.
- the movable valve element is urged by a temperature-sensitive spring and urged by a bias spring in the opposite direction.
- the temperature-sensitive spring changes its spring constant in accordance with the temperature of the mixed hot and cold water, and moves the movable valve body to a position that approximately matches the spring force of the bias spring, so that the mixing temperature adjusted to the target temperature Hot water is spouted.
- a spacer is interposed between the movable valve element and the temperature-sensitive spring, and the spacer separates the temperature-sensitive spring from a position where high-temperature water and low-temperature water are mixed by a predetermined distance. Accordingly, the high temperature water and the low temperature water are sufficiently mixed, and then the mixed hot water is brought into contact with the temperature-sensitive spring to ensure stable sliding of the movable valve body.
- the movable valve element is pressed by the valve pressing portion, and the temperature-sensitive spring is supported by the spring receiving portion.
- the valve pressing portion is a leg portion provided at a predetermined gap along the inner periphery of the movable valve body, thereby pressing the sliding valve body with a uniform force along the inner periphery. Further, by arranging a part of the leg portion facing the water side port, the leg portion shunts the low-temperature water flowing out from the water side port to promote mixing with the high-temperature water.
- the outflow direction of the low-temperature water flowing out of the water-side port is changed in the circumferential direction, and the high-temperature water flowing out of the hot-water port is surrounded from the outside. Since mixing is performed through such a state, mixing of low-temperature water and high-temperature water is further promoted.
- the fins in a suitable mode for performing such a mixing action can be realized by arranging 6 to 8 fins at equal intervals in the circumferential direction.
- the fin by arranging the fin at a longer interval in the circumferential direction as the fin is further away from the water side port, the fin flows from a narrow space at a place where the flow velocity is strong near the water side port, Inflows from a water-side port at a low flow velocity flow from a wide interval. Therefore, low-temperature water with almost the same flow rate flows between each fin, and is equal to high-temperature water. Uniform mixing is promoted.
- any configuration that is provided in a portion facing the water-side port can be used.
- the flow dividing member fin formed or attached to the casing body or the like may be used.
- the legs, the fins, or the flow dividing member may be provided on a portion facing the hot water side port, a bias spring receiver, or the like, so that high-temperature water flowing out of the hot water side port is distributed. The flowing down further promotes mixing with the cold water.
- the spring constant of the sensing spring changes according to the temperature of the mixed hot and cold water that has passed through the movable valve element.
- the temperature of the mixed hot and cold water is stabilized by converting the change in the spring constant as the driving force of the movable valve body by the driving means.
- the temperature-sensitive spring since the temperature-sensitive spring is sensitive to the temperature of the mixed hot water, it exhibits excellent characteristics in the response of the temperature control of the mixed hot water. On the other hand, if the temperature-sensitive spring is not exposed to the sufficiently mixed hot water, cycling occurs in the temperature control of the hot water.
- a flow dividing member is arranged at least upstream of the temperature-sensitive spring, and the flow direction of high-temperature water, low-temperature water, or mixed hot and cold water flowing into the mixing chamber is dispersed in the circumferential direction of the mixing chamber, so that a uniform flow of temperature is achieved.
- the temperature-sensitive spring does not need to directly apply a moving force to the movable valve body, and may simply function as a temperature sensor.
- the driving means is configured to directly apply a moving force to the movable valve body by the expansion and contraction of the temperature sensing spring.
- the temperature-sensitive spring can be used as a temperature sensor, one end of which is fixed, and the other end of the movable spring is actuated as a drive means by simultaneously urging the movable valve body.
- the structure is simplified, and the size of the hot and cold water mixing device can be reduced.
- the flow dividing member sufficiently agitates the hot and cold water or the mixed hot and cold water immediately after mixing. To achieve a favorable effect.
- the movable valve element moves to a position where the forces of the temperature-sensitive spring and the bias spring are balanced.
- the flow dividing member has a suitable effect of exposing the temperature-sensitive spring to a sufficiently mixed hot and cold water.
- the temperature-sensitive spring is not limited to one that generates the biasing force in two directions, but may be one that generates the biasing force only in one direction.
- the target temperature of the mixed hot and cold water is changed by changing the preload on the bias spring by the preload adjusting means.
- the preload By increasing the preload in this way, the durability of the temperature-sensitive spring can be improved, and the sealing force of the movable valve element can be increased. Therefore, by appropriately adjusting the distortion, the target temperature of the mixed hot and cold water can be increased. Excellent performance can be obtained with respect to the change of temperature and the temperature control function.
- the flow dividing member eliminates temperature unevenness of the mixed hot and cold water and suppresses a local or instantaneous temperature change in the temperature-sensitive spring, so that its characteristics can be prevented from deteriorating.
- the movable valve element, the temperature sensing spring and the bias spring are housed in the valve chamber and the mixing chamber of the casing body, and the casing body is configured to be detachable from a member provided with the hot water side port and the water side port.
- components such as a temperature control function portion such as a temperature sensing spring and a flow dividing member are united, and assembling is simplified, and maintenance and inspection are excellent.
- the flow dividing member integrally with the wall surface of the casing body, the number of parts can be reduced, and the assembly of the flow dividing member can be omitted.
- the spacer formed integrally with the flow dividing member is interposed between the movable valve body and the temperature-sensitive spring, and acts to separate the temperature-sensitive spring from the mixing position of the high-temperature water and the low-temperature water by a predetermined distance.
- the sliding direction of the spacer can be uniquely determined, and the movable The valve can be moved smoothly without tilting.
- a tubular flow path forming member is disposed inside the temperature-sensitive spring, and a spring flow path chamber is formed between the temperature sensing spring and an inner side wall of the casing body.
- a spacer or a temperature-sensitive spring receiving member that receives the other end of the temperature-sensitive spring is provided between the movable valve body and the temperature-sensitive spring. Can be.
- a throttle is formed in the spring chamber introduction path, and a flow path resistance portion and a spiral projection for stirring the mixed hot and cold water are formed. You can also. Further, a divergent guide may be formed at one end of the stirrer so that the mixed hot and cold water flows smoothly into the spring flow channel chamber.
- the movable valve body is tilted by receiving a load deviated from the temperature-sensitive spring or the bias spring, the sealing property is impaired, and the mixing ratio between high-temperature water and low-temperature water is different, so that the target setting is not achieved. Deviation from temperature occurs.
- the following configuration is adopted.
- the temperature-sensitive spring receiving member that receives the temperature-sensitive spring has a spring-receiving recess formed according to the shape of the end of the temperature-sensitive spring, so that the end face is not cut into a plane. Can stand upright. As a result, the temperature sensing spring does not apply a biasing force to the movable valve body, so that the movable valve body is not tilted, high sealing performance is secured, and the temperature adjustment accuracy is improved.
- the spring receiving recess may be formed by a spiral groove or a spiral step portion, or a configuration in which a spring receiving recess is formed by combining split members may be used.
- the end of the temperature-sensitive spring may be insert-molded with resin. Furthermore, even if the end of the temperature-sensitive spring is cut into a flat surface, a slight step is formed at the start end thereof. A part having a shape following the spring receiving recess of the spring receiving member may be applied.
- the spring receiving member receives the end of the temperature-sensitive spring, it can be attached to or integrally formed with the casing body or the spacer, and the temperature-sensitive spring receiving member that supports the end of the temperature-sensitive spring is The use of a flat plate made of a central support provided at the center of the plate supports the casing so that it can swing relative to the casing body.
- the load of the temperature-sensitive spring is adjusted to be uniform via the support projection, so that no force is applied to the movable valve body to tilt it.
- a protrusion It can be composed of a support recess for supporting the projection.
- the portion receiving the strong load can be evener than the other portions to make the load uniform.
- the same structure as the temperature-sensitive spring receiving member is also applied to the bias spring receiving member that supports the bias spring, so that a uniform load can be applied by the bias spring.
- a valve pressing portion is protruded from a central portion of a spring receiving portion, and the central portion of the movable valve body is pressed in the sliding direction by the valve pressing portion, thereby obtaining a movable valve.
- the body receives no bias and eccentric force in its center.
- the same structure as that of the temperature-sensitive spring receiving member can be applied to a bias spring receiving member that supports a bias spring, and can apply an urging force to the center of the movable valve body.
- a guide means for guiding the sliding of the movable valve body can be employed.
- a valve guide hole may be formed, and the movable valve guide hole may be fitted and supported by a guide member.
- the opening of the water side port or hot water side port is formed with a guide projection that guides in the sliding direction in contact with the outer periphery of the movable valve body to reduce the inclination of the movable valve body when sliding. Can be prevented. Further, even when the binder line is positioned on the seat surface on which the movable valve element is seated, the guide guides the movable valve element so that the movable valve element can be seated inside the parting line. Therefore, the movable valve body does not climb over the parting line and tilt.
- the temperature-sensitive spring receiving member supports the end of the temperature-sensitive spring with the spring receiving portion, and the cylindrical portion is inserted into the sliding hole of the casing main body to be positioned, and is fixed via the fixing means. Fixed to At this time, the temperature-sensitive spring receiving member is merely inserted into the sliding hole, and no torsional force is applied to the temperature-sensitive spring.
- a recess formed in the casing body has A configuration in which the engaging claw formed on the warm spring receiver is engaged, a notch is formed on the casing body, and a notch is formed on the temperature-sensitive spring receiver, and a snap ring is engaged with the notch and the notch.
- the temperature-sensitive spring receiving member is prevented from falling out of the sliding hole. Since the cylindrical portion of the temperature-sensitive spring receiving member is inserted into a sliding hole in which the movable valve element slides, a water-side valve seat on which the movable valve element is seated may be integrally formed.
- the temperature-sensitive spring can be assembled without applying a torsional force by the following configuration. That is, a sliding member having a smaller friction coefficient than the temperature-sensitive spring and the spring-receiving member is interposed between the temperature-sensitive spring receiving member and the end of the temperature-sensitive spring. When assembling to the body, slip against the temperature sensitive spring. Therefore, when the spring receiving member is screwed onto the casing body, no torsional force is applied to the temperature-sensitive spring.
- the spring constant of the temperature-sensitive spring changes according to the temperature of the mixed hot and cold water that has passed through the movable valve element.
- the change in the spring constant can be converted by the driving means as the moving force of the movable valve body, and the temperature of the mixed hot and cold water is stabilized.
- the temperature-sensitive spring since the temperature-sensitive spring is sensitive to the temperature of the mixed hot water, it exhibits excellent characteristics in response to the temperature control of the mixed hot water.
- the temperature-sensitive spring is exposed to the mixed hot water whose temperature is exactly proportional to the ratio of high-temperature water and low-temperature water that has passed through the movable valve element, cycling occurs in the temperature control of the mixed hot water.
- the flow path forming member and the spring chamber introduction path introduce all the high-temperature water and low-temperature water that have passed through the movable valve body so that they come into contact with the temperature-sensitive spring, and one of the high-temperature water and low-temperature water is predominantly sensed. Prevents contact with warm springs to achieve accurate temperature control.
- the movable valve body moves to a position where the forces of the temperature-sensitive spring and the bias spring are balanced.
- the spring chamber introduction path has a suitable effect for exposing to a sufficiently mixed hot and cold water for the temperature-sensitive spring.
- the temperature-sensitive spring is not limited to one that generates the biasing force in two directions, and one that generates the biasing force only in one direction can be used.
- the movable valve element, the temperature sensing spring, and the bias spring are housed in the valve chamber and the mixing chamber of the casing body, and the member provided with the hot-water port and the water-side port for discharging the high-temperature water and the low-temperature water is used as described above.
- the casing itself is detachably formed, and a temperature controller such as a temperature-sensitive spring
- a temperature controller such as a temperature-sensitive spring
- the temperature-sensitive spring needs to be a material suitable for discharging mixed hot and cold water at the target set temperature by changing the spring constant according to the temperature, but as a material having such characteristics, Ni A shape memory alloy made of a Ti alloy is used, and a spring with a proportional relationship between the spring constant and the temperature is used in a temperature range of 10 to 70 ° C in a temperature range of 15 or more. To enhance the temperature control characteristics.
- the temperature-sensitive spring uses the mounting strain r in the range of 0.6 to 1.4%. This is done by setting the mounting strain r to be 0.6% or more to increase the generated load, thereby stabilizing the sliding of the movable valve body against fluctuations in water pressure and the like. By setting the distortion r to 1.4% or less, the hysteresis is reduced and the durability is improved. In order to improve the durability, the upper limit of the mounting strain r should be reduced in consideration of the reduction of the generated load, preferably 1.2% or less, more preferably 0.8% or less. It is. Further, such a mounting distortion can be generated by biasing the temperature-sensitive spring by a bias spring via a movable valve body.
- FIG. 1 is a cross-sectional view showing a hot water mixing apparatus according to one embodiment of the present invention
- Figure 2 is a graph showing the relationship between the processing temperature of the temperature-sensitive spring used in the hot and cold water mixing device and the transformation temperature.
- FIG. 3 is a cross-sectional view showing a main part of the hot water mixing apparatus of FIG. 1,
- Fig. 4 is a graph showing the relationship between the load characteristics of the temperature-sensitive spring
- Figure 5 is a graph showing the relationship between the spring constant of the temperature-sensitive spring and the temperature.
- Fig. 6 is a graph showing the reduced load and hypothetical age of the temperature-sensitive spring obtained from experiments on the durability of the temperature-sensitive spring.
- FIG. 7 is an explanatory diagram illustrating characteristics of the shape of the movable valve body used in the hot and cold water mixing device
- FIG. 8 is an explanatory view for explaining the characteristics of the shape of the water-side valve seat member used in the hot and cold water mixing device
- FIG. 9 is an explanatory diagram for explaining the characteristics of the shape of the movable valve element in the hot and cold water mixing device
- FIG. 11 is a perspective view showing a state in which the spacer is broken
- Fig. 12 is a graph showing the relationship between the spouting temperature of the hot and cold water mixing device and the supply pressure of low-temperature water or high-temperature water,
- FIG. 13 is an explanatory view showing a spring receiving member
- FIG. 14 is an explanatory view showing another spring receiving member
- FIG. 15 is an explanatory view showing still another spring receiving member
- FIG. 16 is an explanatory view showing another spring receiving member
- FIG. 17 is an explanatory view showing still another spring receiving member
- Figure 18 is an explanatory diagram showing the time constant of the temperature-sensitive spring
- FIG. 19 is an exploded perspective view showing the casing body and the water-side valve seat member.
- FIG. 20 is an exploded perspective view showing another casing body and a water-side valve seat member
- FIG. 21 is a cross-sectional view showing a hot-water mixing apparatus provided with a preload adjusting mechanism.
- FIG. 22 is a cross-sectional view showing a hot and cold water mixing apparatus provided with another preload adjusting mechanism.
- Fig. 23 is a graph showing the relationship between the water discharge temperature of the hot and cold water mixing device and the rotation angle of the cap that changes the target temperature.
- FIG. 24 is a cross-sectional view showing a hot and cold water mixing device having a movable valve body having a different shape.
- FIG. 25 is a cross-sectional view showing a main part of a hot water mixing apparatus using another spacer.
- FIG. 26 is a perspective view showing the spacer of FIG. 25,
- FIG. 27 is an explanatory diagram for explaining the spacer fin of FIG. 25;
- FIG. 28 is a perspective view showing the bias spring receiver of FIG. 25,
- FIG. 29 is an explanatory diagram illustrating a position where a temperature sensor is disposed in the hot and cold water mixing device
- FIG. 30 is an explanatory diagram illustrating a circumferential position where the temperature sensor is disposed
- Figure 31 is a graph explaining the temperature distribution in the hot and cold water mixing chamber in a hot and cold water mixing device without a spacer.
- FIG. 32 is a graph explaining the temperature distribution in the hot and cold water mixing chamber of the hot and cold water mixing device when a spacer is installed.
- FIG. 33 is a cross-sectional view showing a main part of a hot water mixing apparatus using another spacer,
- FIG. 34 is a perspective view showing the spacer of FIG. 33.
- FIG. 35 is a cross-sectional view showing a main part of a hot and cold water mixing apparatus using another spacer
- FIG. 36 is a perspective view showing another spacer
- FIG. 37 is a cross-sectional view showing a main part of a hot and cold water mixing apparatus using a spring receiving member according to still another embodiment.
- FIG. 38 is a perspective view showing the temperature-sensitive spring receiving member of FIG. 37.
- FIG. 39 is a perspective view showing another temperature-sensitive spring receiving member
- FIG. 40 is a sectional view showing a hot and cold water mixing apparatus according to still another embodiment.
- FIG. 41 is a cross-sectional view showing the periphery of a movable valve body according to another embodiment
- FIG. 42 is a sectional view showing a modification of the bias spring receiving member of FIG. 40.
- FIG. 43 is a cross-sectional view showing a faucet provided with a hot-water mixing valve according to still another embodiment
- FIG. 44 is a cross-sectional view showing a main part of the hot-water mixing valve of FIG. 42,
- FIG. 45 is an exploded perspective view showing a configuration of a main part of the hot and cold water mixing valve.
- FIG. 46 is a cross-sectional view showing the periphery of the movable valve body of the hot water mixing valve
- Fig. 47 is a plan view showing the casing body.
- FIG. 48 is an explanatory diagram illustrating a state in which hot water flows in the hot-water mixing valve
- FIG. 49 is a perspective view showing the vicinity of the movable valve body and the hot water side valve seat.
- FIG. 1 is a sectional view showing a hot water mixing valve according to one embodiment of the present invention.
- the hot and cold water mixing device 10 is attached to the outer casing 20, the inner casing 30 housed in the outer casing 20, and the end of the outer casing 20. And a casing body 50 housed in the inner casing 30.
- the casing body 50 has a chamber for accommodating a valve mechanism and the like to be described later, that is, a hot water mixing chamber 80, a hot water inflow chamber 90, and a slide chamber 96 in order from the right side of the figure. I have.
- a water-side valve seat member 70 sealed with a 0 ring is fitted in the hot and cold water mixing chamber 80.
- a water-side valve seat 108 having a water-side port 106 is formed in the water-side valve seat member 70.
- the water-side port 106 is connected to a water introduction passage 102 formed between the outer casing 20 and the inner casing 30.
- the casing body 50 has a hot water channel 114 connected to a hot water heater (not shown), and a hot water side port 116 connected to the hot water channel 114.
- the hot water side valve seat 118 is formed.
- a movable valve body 160 detachably attached to or detached from the water side valve seat 108 and the hot water side valve seat 118 is slidably fitted.
- the movable valve element 160 receives the spring force of the temperature-sensitive spring 130 housed in the hot and cold water mixing chamber 80, receives the spring force of the bias spring 150, and receives these spring forces. The position is determined by the balance.
- the temperature sensing spring 130 is provided between a spring receiving member 180 supported by the water-side valve seat member 70 and a spacer 190.
- the temperature-sensitive spring 130 is formed of a metal whose spring constant changes according to the temperature.
- the bias spring 150 is formed of a normal spring material having a constant spring constant with respect to temperature. Is formed.
- the preload adjusting mechanism 200 changes the target temperature of the mixed hot and cold water by adjusting the preload of the bias spring 150 and slides the cap 40 by rotating the cap 40.
- the spring receiving member 210 advances and retreats via the locking mechanism 250, whereby the preload of the bias spring 150 increases and decreases.
- the movable valve body 160 is displaced to a position where the spring force of the Pierce spring 150 and the spring force of the temperature-sensitive spring 130 are balanced, and the target temperature is changed.
- the movable valve body 160 is placed in the hot and cold mixing chamber 80.
- the position is determined by the balance between the force generated in the temperature-sensitive spring 130 by the mixed hot and cold water and the spring force of the bias spring 150, and the position is determined to be stationary. From this state, if conditions such as the temperature of hot water supplied from the hot water heater, tap water temperature or flow rate fluctuate due to disturbance, The temperature of the mixed hot and cold water in the hot and cold mixing chamber 80 deviates from the target temperature in accordance with the fluctuation of the temperature, and a temperature deviation occurs.
- the temperature-sensitive spring 130 changes the spring constant according to the temperature change, and as a result, the spring force of the temperature-sensitive spring 130 changes.
- the spring force of the temperature-sensitive spring 130 increases, and the movable valve element 160 is drawn while increasing the preload of the bias spring 150. Since it is displaced to the right in (1), the proportion of hot water decreases, and the temperature of the mixed hot water drops.
- the spring force of the temperature-sensitive spring 130 decreases, and the movable valve element 160 is displaced leftward in FIG. 1 by the action of the Pierce spring 150.
- the percentage of hot water increases, the percentage of water decreases at the same time, and the temperature of the mixed hot water rises.
- the temperature of the mixed hot and cold water is adjusted toward the target temperature by the action of the temperature-sensitive spring 130.
- the target temperature can be changed by rotating the cap 40 constituting a part of the preload adjusting mechanism 200 in a predetermined direction. That is, when the cap 40 is rotated in a predetermined direction, the spring receiving member 210 moves to the left in FIG. 1 via the slide mechanism 250, and the bias spring 150 is compressed and displaced. The preload on the movable valve element 160 by the bias spring 150 increases. On the other hand, when the cap 40 is rotated in the opposite direction, it moves to the right in FIG. 1 via the slide mechanism 250 and the bias spring 150 is extended and displaced, and the movable valve by the bias spring 150 is displaced. The preload on body 160 is reduced.
- the movable valve element 160 is moved to a position where the flow path of the hot water side valve seat 118 is widened and the flow path of the water side valve seat 108 is narrowed.
- the mixing ratio by increasing the amount of hot water and decreasing the amount of water, the water discharge temperature of the mixed hot water increases, and conversely, the movable valve element 1 60 is adjusted so that the flow path of the hot water side valve seat 118 is narrowed and at the same time the flow path of the water side valve seat 108 is widened, so that the water discharge temperature of the mixed hot water becomes low.
- the preload given by the bias spring 150 is directly transmitted to the movable valve element 160 to move the movable valve element 160, and the temperature-sensitive spring The displacement associated with the temperature of 130 is also directly transmitted to the movable valve element 160, thereby moving the movable valve element 160. Therefore, reducing the amount of material of the temperature-sensitive spring 130 Even if a material having a small spring constant is used, the movable valve element 160 can be smoothly moved since there is little friction loss for moving the movable valve element 160.
- the temperature-sensitive spring 130 will be described.
- an alloy belonging to the category of a shape memory alloy (SMA) made of a NiTi alloy can be used as the metal material of the temperature-sensitive spring 130.
- SMA shape memory alloy
- the elastic coefficient changes according to the temperature
- the spring constant of the temperature-sensitive spring 130 formed of the SMA changes according to the temperature. That is, as a characteristic of the temperature-sensitive spring 130 when used in the hot and cold water mixing device 10, it is proportional to the temperature difference from the target set temperature within the operating temperature range, for example, within the range of 10 to 70.
- the spring load and the strain have a characteristic that is proportional, and it is necessary to control the inflow of high-temperature water and the inflow of low-temperature water in accordance with the characteristic.
- the Ni T i alloy has a transformation start temperature during cooling (hereinafter referred to as M s), a transformation end temperature (hereinafter referred to as M f), and a reverse transformation start temperature during heating (hereinafter referred to as As). ) And a reverse transformation end temperature (hereinafter referred to as A f).
- M s transformation start temperature during cooling
- M f transformation end temperature
- As reverse transformation start temperature during heating
- a f reverse transformation end temperature
- the alloy has a thermoelastic martensitic transformation of a parent phase and a martensite phase.
- the N ⁇ ⁇ ⁇ alloy gives deformation strain at a desired temperature (low temperature) of M s or less, and then heats the alloy in a temperature range of A f or more, reverse transformation occurs, and the shape before the deformation strain is given It exerts the shape memory effect of recovery.
- the Ni Ti alloy is a soft martensite phase in a low temperature range below M f, and when it undergoes reverse transformation by heating, it recovers to a parent phase with a high mechanical strength above A f when it undergoes reverse transformation. And this phenomenon is reversible.
- the Ni Ti alloy having such characteristics has an M s-M f value when considering operation at a set temperature in a temperature range of 10 to 70 ° C as in a hot water mixing device 10. Rather than undergoing rapid transformation in a narrow temperature range, it is required to have a linear load-temperature characteristic in a predetermined temperature range within the above temperature range, at least in a temperature range of 15 ° C. or more.
- the N ⁇ Ti alloy and the temperature-sensitive spring 130 using the same can be manufactured by the following steps.
- the Ni concentration in the NiTi alloy is adjusted to 55.0 to 56.0% by weight. That is, when the Ni concentration is less than 55.0% by weight, the Ms value is 70.
- the M f value becomes 1
- the temperature-sensitive spring 130 of the hot-water mixing device 10 for controlling the water discharge temperature within the range of 10 to 70 CC. .
- the main components, Ni or Z and part of Ti are one or more of Co, Fe, V, Cr, Mn, and A1. May be substituted.
- Each of these metals functions to shift Ms or Mf, or Af or As to a higher or lower temperature side. If the substitution amount of these metals is too small, the Ms value exceeds 7 O'C when the Ni concentration is around 55.0% by weight, and if it is too large, the Ni concentration is 56.0. In the vicinity of% by weight, the Mf value falls below 10 ° C, so the replacement amount is set in the range of 0.05 to 2.0% by weight.
- Ni T i as the main component and partly replaced with a metal selected from C 0 etc.
- the ingot is cold drawn so as to obtain a wire having a desired diameter, and the wire is subjected to cold working to form a coil spring.
- the area reduction rate is set to 30% or more. If the area reduction rate is smaller than 30%, the finally obtained temperature-sensitive spring 130 will become sluggish, and the value of M s -M f will not exceed 15 ° C.
- a shape memory process is performed on the coil spring. Specifically, this coil spring is heated in the temperature range of 400 to 480 ° C to memorize the coil shape.
- the treatment temperature range was set for the following reason.
- the processing temperature range is determined by the relationship with the set temperature when the temperature-sensitive spring 130 is operated.If the temperature-sensitive spring 130 is made of the NiTi alloy having the above composition, the processing temperature is increased by 400. If the temperature is lower, M s will be higher than 70 ° C, and if the processing temperature is higher than 480 ° C, M f will be lower than 10 ° C.
- the shape memory processing may be performed in the temperature range of 450 to 480 ° C, and the aging treatment may be performed at about 400 ° C.
- the temperature-sensitive spring 130 will be described.
- hot forging and hot rolling were sequentially performed on the first and second alloys A and B to obtain a wire having a wire diameter of 5. O mm. These wires were drawn at room temperature to form a wire having a diameter of 3.3 mm, then annealed at a temperature of 750, and then drawn at room temperature to a diameter of 2.5 mm. .
- the area reduction rate during this cold drawing is 42.6%.
- the symbol “1-1” and “-1” represent the temperature-sensitive spring 1 30 of the first alloy A] ⁇ 8 and ⁇ 1, respectively.
- the Ms value, Mf value, and Ms-Mf value of the alloy constituting the temperature-sensitive spring 130 vary depending on the composition of the alloy and the application temperature during the shape memory processing. .
- the Ms value and the Mf value decrease. Therefore, it is not possible to control the temperature in the entire temperature range of 10 to 70'C with one kind of temperature-sensitive spring 130, and the composition and treatment of the temperature-sensitive spring 130 in relation to the target set temperature The temperature will be selected.
- the temperature sensitive spring 130 when controlling the target set temperature in the hot and cold water mixing device 10 to 45, the temperature sensitive spring 130 may be made of the first alloy A and have a shape memory processing temperature of 460. Can be read from FIG.
- the second alloy B When controlling the water discharge temperature in the temperature range of 20 to 40, the second alloy B may be used.
- the movable valve element 160 includes a cylindrical portion 162, a water-side seating portion 164 and a hot-water-side seating portion 166 provided at both ends of the cylindrical portion 162, and a cylindrical portion 162.
- the annular engaging portion 168 supports a bias spring 150 at an end thereof, and supports a spacer 190 receiving the temperature-sensitive spring 130 at the other end.
- the movable valve element 160 is moved by the combination of the temperature sensing spring 130 and the bias spring 150, and when the water-side seating part 16 4 is seated on the water-side valve seat 108 ( (Shown in the figure), only the hot water from the water heater is spouted.
- the hot water seating portion 16 6 is seated on the hot water valve seat 18, only tap water (low temperature water) is spouted.
- the amount of low-temperature water or high-temperature water discharged according to the flow path openings of the water-side port 106 and the hot-side port 1 16 is discharged. Then, they are mixed in a hot and cold water mixing chamber 80.
- the temperature-sensitive spring 130 that moves the movable valve element 160 is expanded and contracted in a distorted state in which a preload is applied by the bias spring 150, and the movable valve element 160 is moved within a predetermined range.
- Slide with ST ST. Fig. 4 shows the relationship between the load and strain of the temperature-sensitive spring 130, the solid line shows the strain characteristic of the temperature-sensitive spring 130 at each temperature, and the chain line shows the bias spring 150 according to the present example.
- the load characteristics and the broken line are the load characteristics of the conventional Pierce spring.
- a bias spring with a small spring constant was used to move the temperature-sensitive spring 130 within a small strain range to secure a large stroke STA.
- the temperature sensitive spring 130 is expanded and contracted by the short stroke ST in a constantly distorted state using the Pierce spring 150 having a large spring constant. That is, the strain r of the temperature-sensitive spring 130 is given by the following equation (1), and the range is used in the range of 0.6% to 1.4%, and the movable valve element 160 It stabilizes the drive and prevents the temperature-sensitive spring 130 from deteriorating due to hysteresis.
- the strain of the temperature-sensitive spring 130 is preferably at least 0.6%, particularly preferably at least 0.7%.
- the strain r of the temperature-sensitive spring 130 is 1.4% or more, it affects the hysteresis. That is, as shown in FIG. 5, as represented by the relationship between the temperature of the temperature-sensitive spring 130 and the load, the hysteresis characteristic increases as the strain r increases, and its area increases. The temperature control performance of 30 drops. In other words, when the distortion r is large, the transition from the solid line to the hysteresis characteristic indicated by the broken line is made over time, the initial characteristic is not exhibited, and the characteristic changes over time.
- the temperature-sensitive spring 130 degrades when cooled in the state of maximum strain. This is the case where the temperature-sensitive spring 130 attached to the hot and cold water mixing apparatus 10 is rapidly cooled in a high temperature setting state where the maximum strain r is reached. This state assumes that the water is stopped when the high temperature is set in winter and the mixed hot water exposed to the temperature sensing spring 130 is cooled. The following experiment was performed as a durability test assuming such a case. With the temperature-sensitive spring 13 0 compressed to the maximum strain r, low-temperature water of 10 CC and high-temperature water of 80 CC alternately flow every 30 seconds. Was measured. As the temperature-sensitive spring 130, two kinds of wire diameters of 2.2 mm and 2.5 mm, and four kinds of windings 3, 4.5, 6, and 8 were used. Figure 6 shows the results.
- FIG. 6 is a graph showing the relationship between the reduced load of the temperature-sensitive spring 130 and the thermal cooling cycle.
- the horizontal axis shows the virtual years with 10,000 thermal cooling cycles as the number of times of use per year
- the vertical axis shows the decreasing load of the temperature-sensitive springs 130.
- Mean deviation from temperature When the deviation from the target set temperature is one, the person hardly feels the change, and at 2 ° C or more, the person feels the change slightly. Therefore, it is necessary to suppress the temperature change within at least two steps.
- the distortion r is 1.4% or less, and in order to obtain temperature performance of 2 years or less in 10 years, And the distortion r is 1.2% or less. In order to obtain durability of 10 years or more at a temperature performance of 1 CC or less, it is understood that the strain r is 0.8% or less.
- the stroke ST is determined in consideration of the diameter of the movable valve body 160 and the like in order to secure the discharge capacity of the mixed hot and cold water, etc., and is set to 0.2 mm to 1.5 mm.
- the center diameter D of the temperature sensing spring 130 is substantially equal to the diameter of the movable valve body 160. This is because the eccentric force is not applied to the movable valve body 160 when the load of the temperature-sensitive spring 130 is transmitted to the movable valve body 160, so that the movable valve body 160 does not tilt, There is no leakage of hot water, and the control characteristics to the target temperature are improved.
- the bias spring 150 applies a preload to the temperature-sensitive spring 130 to set the strain of the temperature-sensitive spring 130 to 0.6% to 1.2%.
- the flow path area S 2 of the flow path portion 172 of the movable valve element 160 and the flow path area S 3 of the temperature sensitive spring 130 are determined by the water side port 106 and the hot water.
- the relationship between the side port 1 16 and the port opening area S 1 flowing out of the side port 1 16 is preferably defined as follows.
- the port opening area S 1 is given by the following equation (3).
- the flow path area S 2 of the flow path section 172 is represented by the following equation (4).
- S 2 (D2) 2 ⁇ / 4 - (4)
- the movement of the movable valve element 160 causes water and hot water to flow out of the water side port 106 and the hot water side port 116, and are mixed in the hot / water mixing chamber 80, and the flow path of the movable valve element 160 It flows through the temperature sensing spring 130 of the hot and cold water mixing chamber 80 via the section 172.
- the port opening area S 1 is larger than the flow path area S 2 of the flow path portion 172 of the movable valve element 160 and the flow path area S 3 of the temperature-sensitive spring 130, the pressure loss of the mixed hot and cold water is reduced. This adds to the temperature sensitive spring 130. Such a pressure loss becomes a disturbance to the displacement of the temperature-sensitive spring 130. Therefore, as shown in the above equation (2), the flow passage area S 2 of the flow passage portion 172 and the flow passage area S 3 of the thermosensitive spring 130 are larger than the port opening area S 1. Is desirable.
- the movable valve element 160 is seated on the water-side valve seat 108 or the hot-water valve seat 118 to have a high sealing property in the case of discharging hot water or only water.
- 08 and the hot water side valve seat 1 18 require high surface accuracy, and the water side valve that slides the spacer 190 together with the temperature sensing spring 130
- the inner wall surface 71 of the seat member 70 also requires high surface accuracy. In order to inspect such surface accuracy, it is necessary to use the gauge G shown in Fig. 8. However, for example, if the outer diameter D4A is increased as shown in FIG. 9, the insertion of the gauge at the opening K prevents the gauge G from being inspected. Therefore, it is desirable that the outer diameter D4 of the temperature-sensitive spring 130 be restricted to the inner diameter V1 of which the inner wall surface 71 can be easily measured using the gauge G.
- the width W of the movable valve body 160 will be described.
- the width W of the water-side seating portion 1664 and the hot-side seating portion 166 of the movable valve body 160 is equal to the stroke ST (ST 1 + In relation to ST 2), it is preferable to satisfy the condition of 1 Z 3 ST ⁇ W ⁇ 3 ST.
- the stroke ST is preferentially determined by the material amount of the temperature-sensitive spring 130 and the conditions such as the above-mentioned strain, and therefore, the width W is determined by the setting conditions for the stroke ST. Become.
- the value of the width W is determined in this manner when the width W is less than 1/3 ST, between the water-side seating portion 1664 and the water-side valve seat 108, and the hot-side seating portion 16 Since the distance between 6 and the hot water side valve seat 1 18 acts as a throttle that reduces pressure rapidly with a short stroke ST, the fluid pressure near the inner part 16 1 of the movable valve element 160 decreases rapidly. . Such rapid decompression generates bubbles due to depressurization in the vicinity of the inner portion 161 of the movable valve element 160, i.e., the cavitating, and generates harsh high-frequency noise caused by the generation of bubbles. However, it can cause corrosion inside the movable valve body 160. Therefore, in order to prevent the cavitation, the width W is desirably 1/3 ST or more.
- the width W is preferably 3 ST or less.
- the movable valve element 160 If the pressure receiving area of the movable valve element 160 is large, the movable valve element 160 is easily affected by fluctuations in water pressure, and its movement becomes unstable. In particular, when water is supplied from a water heater to a large number of hot water supply points via a hot water mixing device 10, the pressure fluctuates greatly. In this case, a constant pressure valve may be provided on the upstream side of the hot and cold water mixing device 10 to adjust the pressure supplied to the hot and cold water mixing device 10. By setting to, the movable valve element 160 can be stably moved even with some disturbance without providing a constant pressure valve.
- the movable valve body 160 is formed of rubber, elastomer, or resin. This is because when the movable valve body 160 sits on the water-side valve seat 108 or the hot-side valve seat 118, the water-side seating part 1664 or the hot-side seating part 1666 is slightly deformed. Therefore, the movable valve element 160 can perform opening and closing operations with high sealing properties.
- the water side The valve seat member 70 is formed of rubber, elastomer, or resin, and has even higher sealing properties.
- the spacer 190 is provided with a spring receiving portion 192 for receiving the right support end 1 34 of the temperature-sensitive spring 130, and a spring receiving portion 192. And a plurality of legs 194 projecting in parallel from the upper surface, and a spring receiving portion is provided between the legs 194 in the inter-leg flow path 196 through which water from the water-side port 106 flows.
- the central portions of 192 are formed in the through flow channels 1998, respectively.
- the spacer 190 secures a predetermined distance between the movable valve element 160 and the temperature-sensitive spring 130 for the following reason.
- the mixing ratio of hot and cold water is changed by sliding the movable valve element 160, but the water flowing from the water-side boat 106 through the leg-to-leg channel 196 of the spacer 190 and the hot-water side
- the hot water from the port 116 is mixed with the hot water and flows through the through passage 198 of the spacer 190 to the temperature-sensitive spring 130 side. That is, the spacer 190 acts to secure a distance until the high-temperature water and the low-temperature water are mixed, and to contact the temperature-sensitive spring 130 after being sufficiently mixed.
- the legs 194 of the spacer 190 reduce the flow velocity and change the flow in the circumferential direction, so that the flow between the legs is reduced.
- Low-temperature water is uniformly flowed into the hot and cold water mixing chamber 80 from 196.
- the high-temperature water flowing from the hot-water-side port 116 flows into the hot-water mixing chamber 80, and the high-temperature water is mixed with the low-temperature water through a state surrounding the same uniformly from the outside. Therefore, the temperature sensitive spring
- the 130 Combined with the spacing effect of the spacer 190 until the mixed hot and cold water is mixed, the 130 is exposed to the almost uniformly mixed hot and cold water and changes its load. Therefore, the temperature sensing spring 130 does not apply a sliding force to the movable valve body 160 such that the movable valve body 160 is inclined by performing uniform expansion and contraction.
- the effect of promoting the mixing of the spacer 190 was examined by the following experiment. That is, using a spacer 9.5 mm in length with a length of 9.5 mm, the water discharge of the mixed hot and cold water was set at 10 liters, the target set temperature was set at 40 CC, and the low temperature water was set. of The temperature was set at 15 and the temperature of the hot water was set at 60 ° C.
- the supply pressure of the low-temperature water is kept constant at 2 k8: f, and the supply pressure of the high-temperature water is changed in the range of 0.5 kgf to 7.5 kgf.
- the supply pressure is kept constant at 0.5 kgf and the supply pressure of the low-temperature water is changed in the range of 0.5 kgf to 7.5 kgf.
- the water discharge temperature was evaluated by deviation from the target set temperature.
- Figure 12 shows the results.
- the vertical axis shows the water discharge temperature of the mixed hot water
- the horizontal axis shows the supply pressure of low-temperature water or high-temperature water.
- the solid line and the broken line EH and EC show this embodiment.
- the broken line EH shows the case where the supply pressure of the high-temperature water is constant and the supply pressure of the high-temperature water is constant while the supply pressure of the low-temperature water is constant. This shows the case where the supply pressure is changed.
- the dashed-dotted line and the two-dot dashed line PH and PC show comparative examples without a spacer.
- the chain line PC shows the case where the supply pressure of the high-temperature water was constant and the supply pressure of the low-temperature water was varied.
- spacer 190 reduces the supply pressure of high-temperature water or low-temperature water compared to the case without spacers of dashed and two-dot chain lines PC and PH.
- the deviation from the target set temperature with respect to the fluctuation was small, and the temperature control characteristics were found to be stable.
- the distance secured between the temperature-sensitive spring 130 and the movable valve body 160 by the spacer 190 is short enough to ensure the mixing action described above, and long enough to delay the response.
- the distance is set appropriately according to the size of the hot and cold water mixing device 10 in consideration of the distance that does not cause hunting due to the above. For example, 5mn! ⁇ 10mm.
- the spacer 190 is formed separately from the movable valve element 160, but the spacer 190 is not limited to this and may be formed integrally. In this case, the number of parts can be reduced.
- the spring receiving member 180 that supports the left support end 132 of the temperature-sensitive spring 130 shown in FIG. 3 will be described.
- the spring receiving member 180 positions and attaches the temperature-sensitive spring 130 to the flange 74 of the water-side valve seat member 70.
- the bottom portion 182 of the spring receiving member 180 has a left supporting end portion of the temperature-sensitive spring 130.
- a spiral step 1186 having a shape following 1 32 is formed.
- the spiral step 1886 is positioned at the left support end 132 of the temperature-sensitive spring 13 0 that has not been subjected to end face treatment, and the temperature-sensitive spring 13 0 is perpendicular to the bottom 18 2 Hold upright.
- the temperature-sensitive spring 130 held vertically in this manner applies a spring force to the movable valve element 160 in the same direction as the axial direction, and slides the movable valve element 160 without tilting it. It will be. Therefore, the movable valve element 160 secures high sealing performance and does not leak high-temperature water or low-temperature water.
- a normal spring performs a grinding process to make the end surface flat
- the temperature-sensitive spring 130 according to the present embodiment performs an end surface treatment such as a grinding process on the left support end portion 132.
- the temperature-sensitive spring 130 has no residual strain or the like due to grinding, and does not require a heat treatment for adjusting to a desired memory characteristic, thereby achieving cost reduction.
- the present invention is not limited to this. If the temperature sensing spring 130 can be supported upright without performing the end surface treatment of the left support end portion 132, the configuration shown in FIGS. Is also good.
- the spring receiving member 180B has a spiral groove 1886B following the left support end portion 132 of the temperature-sensitive spring 130.
- the left support end 132 of the temperature-sensitive spring 130 is fitted into the spiral groove 1886B, and the temperature-sensitive spring 130 is supported in an upright state.
- the spring receiving member 180 C includes a resin body 18 1 C obtained by insert-molding the left support end 13 2 of the temperature-sensitive spring 130 by resin injection. In this configuration, since the temperature-sensitive spring 130 is physically supported by the spring receiving member 180 C, even if the left support end portion 132 of the temperature-sensitive spring 130 is not subjected to the end face treatment, The variation in load due to the work of mounting the temperature-sensitive spring 130 can be eliminated.
- the spring receiving member 180 D is composed of a half member 18 1 a provided with a pin 188 and a half member 18 provided with a pin hole 189 fitted into the pin 188. And a spiral groove 186D for fitting and supporting the temperature-sensitive spring 130 when the two half members 181a and 181b are combined.
- the temperature-sensitive spring 130 is supported in an upright state by being inserted into the spiral groove 1886D.
- the left support end 13 2 of the temperature-sensitive spring 130 is not cut, but the left support end 1 32 of the temperature-sensitive spring 130 is shaped like the left end.
- the configuration is such that the temperature-sensitive spring 13 is supported by the spiral step portion 18 of the temperature-sensitive spring 13, but is not limited to this.
- the inner cylindrical portion 184 penetrates the inside of the temperature-sensitive spring 130 to delay the contact of the temperature-sensitive spring 130 with the mixed hot and cold water flowing out of the hot water inflow chamber 90.
- the temperature-sensitive spring 130 has excellent responsiveness that displaces immediately upon contact with mixed hot and cold water, but if this responsiveness is too high, the cycling phenomenon in which the water discharge temperature and water discharge flow periodically change Tends to occur.
- Such a cycling phenomenon is caused by a resonance phenomenon due to the shape and flow rate of the movable valve element 160, but can also be adjusted by changing the time constant of the temperature-sensitive spring 130. is there.
- the time constant is a rising characteristic with respect to the displacement of the temperature-sensitive spring 130. That is, while maintaining the characteristics of the temperature-sensitive spring 130, the cycling phenomenon can be eliminated by adjusting the time constant ⁇ at the time of contact with the mixed hot and cold water by the inner cylindrical portion 1884.
- the spring receiving member 180 is formed of resin, the heat insulating property is higher than that of metal. Therefore, the height of the inner cylindrical portion 184 can be changed as appropriate to design a wider range of the time constant. Can be set.
- engaging claws 72 are formed on the outer peripheral portion of the water-side valve seat member 70 at every 90 ° in the circumferential direction, while the casing main body 50 has The claw engagement notch 56 for engaging with the engagement claw 72 is formed.
- the spring receiving member 180 is held inside the flange portion 74 of the water side valve seat member 70 shown in FIG. 3, and the bottom portion 18 8 of the spring receiving member 180 is held. Hold the temperature-sensitive spring 130 on the right side, and position and fix the spring receiving portion 1992 of the spacer 190 on the right support end 134 of the temperature-sensitive spring 130.
- the engaging claw 72 is engaged with the claw engaging notch 56. It is done by. Therefore, since the water-side valve seat member 70 cannot be mounted while rotating with respect to the casing body 50, no torsional force is applied to the temperature-sensitive spring 130. Therefore, the temperature-sensitive spring 130 does not expand and contract under the torsion, so that the distortion is reduced, and the hysteresis shown in FIG. And has excellent durability.
- a cutout 58 is formed on the casing body 50 side, and a cutout groove (not shown) is formed on the water-side valve seat member 70 side.
- the positional relationship between the cut 58 and the cut groove is formed so as to match each other when the water-side valve seat member 70 is inserted into the hot / water mixing chamber 80 of the casing body 50. I have. With this configuration, when the water-side valve seat member 70 is inserted into the hot and cold water mixing chamber 80 of the casing body 50 and is sandwiched by the retaining ring 76 from the cut 58 to the cut groove, the water-side valve seat member 70 is positioned and fixed with respect to the casing body 50.
- the preload adjusting mechanism 200 includes a spring receiving member 210 supporting the right supporting end portion 154 of the bias spring 150 and a spring receiving member 210.
- a slide mechanism 250 for moving in the axial direction is provided.
- the slide mechanism 250 includes a support 252 fixed to the mounting recess 42 of the cap 40 via a latch mechanism or a click mechanism, and the support 25
- a rotating body 260 fixed with a screw 256 and provided with a male screw portion 262 on the outer peripheral portion of the other end.
- the spring receiving member 210 includes a main body part 212 and an outer peripheral support part 21 integrally formed with the main body part 212 and having a female screw part 2 17 screwed to the male screw part 26 2.
- a spline 218 is formed with the casing body 50.
- the cap 40 In order to change the target temperature of the mixed hot and cold water with the configuration of the preload adjusting mechanism 200, the cap 40 is moved in a predetermined direction as an index on the installation temperature display provided on the outer periphery of the cap 40. To rotate. By the rotation of the cap 40, the support body 252, the screw 256 and the rotating body 260 are rotated integrally with the cap 40. As a result, since the external thread portion 26 2 of the outer peripheral portion of the rotating body 260 is screwed with the female thread portion 2 17 of the spring receiving member 210, the spring receiving member 210 has no rotation. Although the driving force is transmitted, the spring receiving member 210 moves in the axial direction because the rotation is regulated by the spline 218.
- the spring receiving portion 210 displaces the bias spring 150. Due to the displacement of the bias spring 150, the movable valve element 160 is moved, and the temperature sensing spring 130 is displaced to a position where it is balanced with the temperature sensing spring 130, thereby changing the target temperature.
- the bias spring 150 receives the torsion force when the preload receives the advance / retreat force in the same direction as the urging direction of the spring receiving member 210. I can't. Therefore, even if the spring constant is small, a force that inclines the movable valve element 160 is not applied to the temperature-sensitive spring 130 via the bias spring 150. As a result, the movable valve element 160 can perform a stable sliding operation even if the supporting force of the temperature-sensitive spring 130 and the bias spring 150 is weak.
- the preload adjusting mechanism 200A is different from the preload adjusting mechanism 200 of FIG. , Bias spring 150 and first spring receiving member 220 and second spring receiving member 230 Are different.
- the bias spring 150 for applying a preload to the movable valve element 160 is a bias spring 150 A, and a bias spring 1 having a shorter spring length than the bias spring 150 A. 50 B, which are provided concentrically and in parallel.
- the first spring receiving member 220 is formed integrally with the main body portion 222 and the umbrella-shaped central top portion 226, and receives the Pierce spring 150 at the root portion of the main body portion 222.
- a spring receiving portion 224 is formed.
- a hot water flow path 229 is formed in the main body part 222 of the first spring receiving member 220, and a through hole 228 is formed in the central top part 226.
- the second spring receiving member 230 integrally forms the cap-shaped support portion 2332 and the outer peripheral support portion 24 with the cap-shaped support portion 2332 and the outer peripheral support portion 24. It has a spring receiving part 236 for receiving a bias spring 150 between the two.
- the female screw portion 247 is formed on the inner peripheral portion of the outer peripheral support portion 234, and a spline 248 is formed on the outer peripheral portion thereof so that it can slide in the axial direction. ing. Further, a through hole 238 is formed in the cap-shaped support portion 232.
- first spring receiving member 220 and the second spring receiving member 230 are bridged through a through hole 228 and an engaging pin 242 penetrating the through hole 238.
- first spring receiving member 220 moves integrally with the second spring receiving member 230 when engaged with the projection at the end of the engaging pin 242, and is biased.
- the spring 150 is released from the spring force, and the movement is not restricted to the second spring receiving member 230 until then.
- the second spring receiving member 230 moves rightward in FIG. 22 via the slide mechanism 250, and the engagement pin 24
- the first spring receiving member 220 moves integrally with the second spring receiving member 230 via the engaging bin 240.
- the first spring receiving member 220 moves rightward in FIG. 22, it acts to reduce the spring constant of the bias spring 150.
- the rate of expansion of the temperature-sensitive spring 130 is increased, and the movable valve element 160 is quickly moved to the right in FIG.
- the movable valve element When 160 closes the hot-side port 1 16 of the hot-side valve seat 1 18 and fully opens the water-side port 106 of the water-side valve seat 1 108, water is discharged.
- the water is directly discharged by operating the preload adjusting mechanism 200 A so that the movable valve body 160 sits on the hot water side valve seat 118, Because the spring constant of the spring 150 is actually reduced to move the movable valve body 160 quickly, the temperature-sensitive spring 130 extends, and the movable valve body 160 becomes the hot water side valve seat 1. Until closing 18, the cap 40 does not need to be rotated many times, and the operability is improved.
- the bias spring 15 is added to the bias spring 15 OA.
- the bias spring 150 B also applies a preload. Accordingly, the rate of increase in the preload of the bias spring 150 increases, and the movable valve element 160 quickly closes the water-side port 106 of the water-side valve seat 108, and the hot-water side. The hot water side port 1 16 of the valve seat 1 18 is suddenly opened, and the hot water is discharged.
- FIG. 23 shows the relationship between the rotation of the cap 40 and the water discharge temperature of the mixed hot and cold water.
- the relationship between the rotation angle 0 and the water discharge temperature T in the range of the rotation angle 0 2 is a gentle slope, and there is a feature that a fine temperature setting can be performed with fine adjustment.
- the water spouting can be performed promptly even if the rotation angle 0 is small. .
- FIG. 24 is a sectional view showing a hot water mixing apparatus 10B according to another embodiment.
- the configuration different from the above embodiment is that the movable valve element 160B and the position and configuration of the valve seat and port of water or hot water are different.
- the movable valve body 16B includes a water side seating portion 1664B, a hot side seating portion 1666B, a water side seating portion 1664B, and a hot side seating portion 1666B.
- the water-side seating part 1664B is composed of a water-side seating part 16B having a water-side port 106B. B sits on the hot water side valve seat 1 18 B having the hot water side port 1 16 B.
- the movable valve element 16 0 B can be moved by balancing the load with the temperature-sensitive spring 13 0 and the bias spring 1 5 0, but the hot-side port 1 1 6 B is arranged, and the water side port 106 B is arranged on the bias spring 150 side. It can be used for various piping positions.
- FIG. 25 is a cross-sectional view of a main part of a hot / water mixing apparatus 10B equipped with a spacer 190B according to another embodiment
- FIG. 26 is a perspective view showing the spacer 190B.
- the spacer 190B has a spring support 1192B for receiving the right support end 134 of the temperature-sensitive spring 130, and a plurality of (6 to 8) protruding parallel from the spring support 1192B.
- the fin 194B is provided with a fin 194B provided between the fins 194B and the center of the spring receiving portion 192B in the fin flow path 196B through which water from the water-side port 106 flows. Are formed in the through channel 198B, respectively.
- the fin 194B is attached at a predetermined angle of 0 with respect to the tangent to the outer periphery of the spring receiving portion 192B.
- the angle 0 is between 40 ° and 6 CT, and more preferably between 45 ° and 55 °, to facilitate the action described below.
- the finer 194B further enhances the effect of changing the flow of the low-temperature water from the water-side port 106 in the circumferential direction by the legs 194 of the spacer 190 in FIG.
- the low-temperature water flowing in from the water-side port 106 increases the flow velocity in the circumferential direction by the fin 194B, and promotes the mixing with the high-temperature water flowing through the hot-water mixing chamber 80. Therefore, the temperature-sensitive spring 130 is exposed to the mixed hot and cold water at a uniform temperature, and does not generate a biased load.
- the bias spring receiving member 210b of the bias spring 150 has the fin 210b as shown in FIG. May be provided.
- This fin 21 OB a increases the flow velocity of the high-temperature water flowing from the hot water side port 116 in the circumferential direction, so that it can be mixed with the low-temperature water flowing from the water side port 106. , Their mixing is promoted.
- Fig. 31 shows the temperature at each position without spacer
- Fig. 32 shows the temperature of spacer 190B. Shows the temperature at each position when mounted.
- the provision of the fins 194 B increases the flow velocity of the low-temperature water in the water-side port 106 in the circumferential direction, and promotes mixing with the high-temperature water.
- the temperatures at the four positions converged near the target set temperature.
- FIG. 33 is a cross-sectional view showing a main part of a hot and cold water mixing apparatus 10C equipped with a spacer 190C according to another embodiment
- FIG. 34 is a perspective view of the spacer 190C.
- the spacer 190C has a spring receiving portion 192C for receiving the temperature-sensitive spring 130, and a plurality of protrusions projecting from the spring receiving portion 192C and the annular locking portion 168 of the movable valve element 160. Fins 1 94 C positioned at the center, spacer discs 1 95 C formed on the inner periphery of spring receivers 1 92 C, and protruding from the spacer discs 1 95 C And a spacer cylindrical portion 198C.
- the spacer cylindrical portion 198C is inserted through the inside of the temperature-sensitive spring 130, and forms a spring chamber hot water passage 80a with the inner wall surface 71 of the water-side valve seat member 70. I have. Also, a plurality of spacer flow holes 195Ca (four in the drawing) are formed at predetermined intervals in the circumferential direction in the spacer disk portion 195C. It communicates with the spring room hot water passage 80a.
- the high-temperature water from the hot water inflow chamber 90 is mixed with the low-temperature water passing through the inter-fin flow path 196 C of the spacer 190 C to form the spacer disk section 195 C.
- the fluid flows out from the outlet hole 70a through the spacer passage hole 1 95C a and the spring chamber hot water passage 8 O a.
- the mixed hot and cold water flowing through the hot spring water passage 80a expands and contracts the temperature-sensitive spring 130 according to the temperature.
- the high-temperature water is mixed with the low-temperature water that has passed through the inter-fin passage 196 C, narrowed by the spacer passage hole 195 C a, and flows through the spring chamber hot water passage 80 a.
- the high-temperature water is sufficiently mixed with the low-temperature water by the squeezing action of the Psa channel hole 1 95 Ca. Therefore, since the well-mixed hot and cold water flows through the spring chamber hot-water passage 80a, the temperature-sensitive spring 130 performs a stable expansion and contraction operation.
- FIG. 35 shows an embodiment using another spacer 190D.
- the spacer 190D is obtained by projecting a conical guide portion 197D from the spacer disk portion 195C of the spacer 190C in FIG.
- This conical guide section 1 97 D Is formed in a conical shape diverging toward the downstream side so as to smoothly flow into the spring chamber hot water passage 80a.
- the mixed hot and cold water mixed with the spacer 1 90D fin 1 94D flows along the conical guide part 197D, and is narrowed by the spacer passage hole 195D a. Hot water flows through passage 80a. At this time, the conical guide portion 197D promotes a smooth flow without mixing the hot and cold water into the spacer passage hole 195Da, thereby promoting a smooth flow. Vibration is not applied to D and the movable valve body 160, and the stable slidability by the movable valve body 160 is enhanced.
- the base ridge 1 98a may be formed.
- the mixed hot and cold water flowing into the spring room hot and cold water passage 80a is further stirred, and the temperature-sensitive spring 130 can perform a stable expansion and contraction operation.
- the spiral spacer ridge 198a stirs the mixed hot and cold water, any other configuration may be used as long as it has the function and effect, and for example, a projection serving as a flow path resistance may be used.
- the spiral protrusion and the flow path resistance may be formed on the inner wall surface 71 of the water-side valve seat member 70 instead of being formed on the spacer side.
- the movable valve body 160 Since both ends of the movable valve body 160 are supported by the temperature-sensitive spring 130 and the bias spring 150, the movable valve body 160 can easily tilt due to uneven load of both springs 130 and 150, but this is prevented.
- a spring receiving member 180F supported by the water-side valve seat member 70F.
- the spring receiving member 180F is a disk-shaped member having four flow passage holes 180Fa concentrically, and has a left supporting end 132 A spring receiving step portion 180 Fb for supporting the spring is formed, and a support protrusion 180 Fc is formed at the center thereof.
- the water-side valve seat member 70F includes a lid portion 70Fa, and the passage holes 70Fd are formed at positions corresponding to the passage holes 180Fa, respectively. Further, a support recess 70 Fb for supporting the support projection 180 Fc is formed at an inner central portion of the lid portion 70 Fa.
- the temperature-sensitive spring 1 30 is connected to the spring receiving member 1
- the spring receiving member 180 F is positioned at 80 F b, and is supported at one point by the support projection 180 F c positioned at the support recess 70 F b of the lid portion 70 F a.
- the spring receiving member 180 F is connected to the temperature-sensitive spring 130 F via the support protrusion 180 Fc. Tilt to even out the load. Therefore, the temperature-sensitive spring 130 is adjusted so as to generate a uniform load by the spring receiving member 180F, and does not apply a force to tilt the movable valve body 160.
- the bias spring 150 is also provided with a structure that supports the movable valve element 160F at one point. That is, the right support end 154 of the bias spring 150 is supported by the liner 220F via the bias spring receiving member 21OF.
- the bias spring receiving member 210F has a disk shape, is provided with a spring receiving stepped portion 210Fa on an outer peripheral portion thereof, and is provided with a support projection 21OFb on a central end surface portion.
- the support protrusion 210b is positioned and supported by a support recess 220fa at the center of the liner 220f. Therefore, the bias spring receiving member 210F supports the bias spring 150 so as to be able to swing around the support protrusion 210b.
- the bias spring receiving member 210 F is connected to the bias spring 150 via the support protrusion 210 b. Since a uniform load is applied to 50, no sliding force is applied to the movable valve element 160 in the direction of inclination.
- FIG. 39 is a perspective view showing a temperature-sensitive spring receiving resin member 180 L for supporting the left support end 132 of the temperature-sensitive spring 130.
- the temperature-sensitive spring receiving resin member 180 L has a resin spring receiving lid portion 180 La formed of hard resin and a spring receiving portion 180 Lb formed of an elastic member such as sponge rubber. It has.
- the temperature-sensitive spring receiving resin member 180 L is securely supported by the resin spring receiving lid portion 180 La, and the elastic resin spring receiving portion 180 La provides the temperature-sensitive spring 13. By absorbing a tilt load of 0, no tilting sliding force is applied to the movable valve element 160.
- Fig. 40 shows a configuration in which a tilted sliding force is not applied to the movable valve element 160F, and the urging force of the temperature-sensitive spring 130 and the bias spring 150 is applied to the center of the movable valve element 160F.
- the locking support portion 160 Ga of the movable valve element 160 G has a central base 160 Gb and a locking flow passage hole 1 surrounding the central base 160 Gb. Three 60 Gc are formed.
- the left support end 152 of the bias spring 150 is supported by a bias spring receiving member 210G.
- the bias spring receiving member 210 G includes a cap portion 210 G a, a tip support protrusion 210 G b provided at the tip of the cap portion 210 G a, and a cylindrical portion 210 G. c, and a spring receiving annular recess 2110 Gd formed on the inner peripheral side of the cylindrical portion 210 Gc.
- the bias spring receiving member 210 G When the liner 220 G is moved, the bias spring receiving member 210 G is moved forward and backward via the bias spring 150. As a result, the movable valve element 160G is slid by being pushed by the distal end support projection 21OGb of the bias spring receiving member 210G against the center base 160Gb. Therefore, the movable valve body 160G receives sliding power from its central base 160Gb and does not receive eccentric force.
- the spacer 190 G is also provided with a structure for pressing the movable valve body 160 G at the center.
- the spacer 190 G has a spring receiving portion 190 Gf for receiving the temperature-sensitive spring 130, a fan 194 G, and a spacer disk portion 190 G having a flow path hole 190 Gc. d and a guide tube portion 190 Ge provided on the outer periphery of the spring receiving portion 190 Gf.
- a valve body pressing portion 190G8: is protruded from the center of the space disk portion 190Gd. Therefore, the spacer 190G contacts the central base 160Gb of the movable valve element 160G via the valve element pressing portion 190Gg, and contacts the fin 194G. Absent.
- the guide cylinder portion 190 Ge has a cylindrical shape slidable with respect to the inner wall surface 71 G a of the water-side valve seat member 70 G.
- the spacer 190 G slides due to the expansion and contraction of the temperature sensing spring 130.
- the spacer 190G slides while being guided by the inner wall surface 7IGa of the water-side valve seat member 70G at the guide cylinder portion 190Ge.
- the spacer 190 G of the valve body pressing portion 190 Gg pushes the central base 160 G of the movable valve body 160 G to move the movable valve body 160 G. Slides.
- the movable valve body 160G slides by receiving the force from the spacer 190G only at the center thereof.
- the spacer 190G moves while the guide cylinder portion 190Ge is guided by the inner wall surface 71Ga of the water-side valve seat member 70G.
- the spacer 190 G also has no inclination, so that no tilt force is applied to the movable valve body 160 G.
- FIG. 41 shows an embodiment in which a guide is provided on the inner peripheral portion of the movable valve body 160H. That is, a flow passage hole 160Hb is formed inside the movable valve body 160H, and a sliding guide 220Ha protruding from the liner 220H is formed in the flow passage hole 160Hb. It is slidably inserted. Therefore, since the movable valve element 160H is guided in the sliding direction by the sliding guide portion 22Ha, rattling is prevented.
- FIG. 42 shows an embodiment including a bias spring receiving member 210J which is a modification of the bias spring receiving member 210G of FIG.
- the bias spring receiving member 210J has a guide cylindrical portion 210Je on the side of the bias spring 150 of the cap-shaped portion 210Ja.
- the guide column portion 210Je is slidably fitted and supported in a guide hole 220Jb of a guide tube portion 220Ja protruding from the end of the liner 220J.
- FIG. 43 is a sectional view showing a faucet 300 according to another embodiment of the present invention.
- the faucet 300 is provided with a hot water mixing valve 400 and a switching valve 800 in the outer casing 310, and the water and hot water supplied from the water flow path and the hot water flow path are mixed with the hot water mixing valve.
- the mixture is mixed at 400 and the mixture is switched by a switching valve 800 to supply to a plurality of hot water supply points.
- FIG. 44 is an enlarged sectional view of the hot and cold water mixing valve 400
- FIG. 45 is an exploded perspective view of a main part thereof.
- the hot / water mixing valve 400 includes a heat insulating member 410 fitted in the outer casing 310, a water introducing passage 420 provided in the outer casing 310, and a hot water introducing flow.
- a water-side valve seat member 480 screwed to the casing body 450.
- the casing body 450 and the water-side valve seat member 480 are provided with a chamber for accommodating a valve mechanism and the like described later, that is, a hot-water mixing chamber 510, a hot-water inflow chamber 5200, and a A slide room 530 is provided.
- the casing body 450 has a water-side port 462 connected to the above-mentioned water introduction channel 420 and a hot-side port 472 connected to the hot water introduction channel 430.
- the two ports 462 and 472 are in communication with the hot water inflow chamber 520.
- a movable valve element 560 is slidably fitted in the hot water inflow chamber 520.
- the movable valve element 560 receives the spring force of the temperature-sensitive spring 540 housed in the hot and cold water mixing chamber 5100, and also receives the spring force of the bias spring 550. Depending on the situation, the position is determined.
- the temperature-sensitive spring 540 is provided between the water-side valve seat member 480 and a spacer 590 via a slipper 580.
- the temperature-sensitive spring 540 is formed of a metal whose spring constant changes according to temperature, and the bias spring 550 is formed of a normal spring material having a substantially constant spring constant with respect to temperature. I have.
- a preload adjusting device 600 for adjusting the preload of the bias spring 550 is provided on the right side of the drawing.
- the preload adjusting device 600 changes the target temperature of the mixed hot and cold water, and the liner 6100 is rotated via the spindle 6300 by rotating the temperature adjusting dial 4400.
- the preload of the bias spring 550 increases or decreases.
- the movable valve element 560 is displaced to a position where the spring force of the bias spring 550 and the spring force of the temperature-sensitive spring 540 are balanced, and the target temperature is changed.
- the movable valve element 560 is provided in the hot and cold water mixing chamber.
- the position is determined by the balance between the force generated in the temperature-sensitive spring 540 by the mixed hot and cold water in the 510 and the spring force of the bias spring 550, and the position is determined and it is stationary. From this state, conditions such as the temperature of hot water supplied from the water heater, tap water temperature or flow rate fluctuate due to disturbance.
- the temperature of the mixed hot and cold water in the hot and cold mixing chamber 510 deviates from the target temperature in accordance with the fluctuation, and a temperature deviation occurs.
- the temperature-sensitive spring 540 changes the spring constant according to this temperature change, and as a result, the spring force of the temperature-sensitive spring 540 changes.
- the spring force of the temperature sensing spring 540 increases, and the movable valve element 560 is moved while increasing the preload of the bias spring 550.
- the displacement in the right direction in Fig. 43 reduces the proportion of hot water and lowers the temperature of the mixed hot and cold water.
- the spring force of the temperature sensing spring 540 decreases, and the movable valve element 560 moves leftward in FIG. Since the displacement is allowed, the proportion of hot water increases while the proportion of water decreases, and the temperature of the mixed hot water rises.
- the temperature of the mixed hot and cold water is adjusted toward the target temperature by the action of the temperature-sensitive spring 540.
- the target temperature can be changed by rotating a temperature adjusting dial 450, which constitutes a part of the preload adjusting device 600, in a predetermined direction. Do. That is, when the temperature adjustment dial 44 is rotated in a predetermined direction, the liner 610 moves to the left in FIG.
- the bias spring 550 expands and displaces, and the preload on the movable valve element 560 by the bias spring 550 decreases.
- the movable valve element 560 moves the hot water side port 472 to a position that widens the flow path and simultaneously narrows the flow path of the water side port 462.
- the mixing ratio By adjusting the mixing ratio by increasing and decreasing the amount of hot water, the water discharge temperature of the mixed hot and cold water is raised, and conversely, the movable valve body 5 6 0 is adjusted so that the flow path of the hot water port 472 is narrowed and at the same time the flow path of the water port 462 is widened, thereby lowering the water discharge temperature of the mixed hot water.
- the hot / water mixing valve 400 in this embodiment is configured such that a preload given by a bias spring 550 is directly transmitted to the movable valve element 560 to move the movable valve element 560,
- the displacement associated with the temperature of the spring 540 is also directly transmitted to the movable valve element 560, thereby moving the movable valve element 560. Therefore, as the temperature-sensitive spring 540, the material amount is reduced. Therefore, even if a material having a small spring constant is used, the movable valve element 560 can be smoothly moved because there is little friction loss for moving the movable valve element 560.
- the switching valve 800 for switching the mixed hot and cold water flowing out of the hot and cold mixing valve 400 and supplying hot water to two locations will be described.
- the switching valve 800 has a support 810, a sleeve 820 having outlet ports 822, 824 connected to two hot water supply points, and a sleeve 820 fitted in the sleeve 820. And a switching valve element 830.
- a switching dial 840 is rotatably mounted on an end of the support 810. The switching dial 840 is fixed to the switching valve element 830 via a connecting member 844 fixed to the switching valve element 830.
- the switching valve element 830 has a bottomed hole 832 connected to the hot and cold water mixing chamber 510 and a flow passage that is switched from the bottomed hole 832 to the outflow ports 822 and 824 of the sleeve 820. Holes 834, 836 are formed.
- the switching valve 800 will be described. Now, when the switching dial 840 is rotated from the state shown in FIG. 43 and the flow path hole 834 is positioned at the outflow port 822, the mixed hot water from the hot water mixing chamber 510 of the hot water mixing valve 400 is supplied to the bottomed hole. Channel from 832? L8 34 flows through the outflow port 822 to the first channel 850. On the other hand, when the switching dial 840 is rotated to align the flow passage hole 836 with the outflow port 824, the mixed hot water in the bottomed hole 832 flows from the flow passage hole 836 to the second passage 852 through the outflow port 824.
- a movable valve body 560 includes a cylindrical portion 562, a water-side seating portion 564 and a hot-water-side seating portion 566 provided at both ends of the cylindrical portion 562, and an inner peripheral portion of the cylindrical portion 562.
- An annular locking portion 568 formed and having a flow path portion 572, and a guide surface 574 formed in a curved shape on the inner peripheral side from the hot water side seating portion 566 are provided.
- the annular locking portion 568 supports a bias spring 550 at one end thereof, and supports a spacer 590 receiving the temperature sensing spring 540 at the other end.
- the movable valve body 560 is moved by a combination of the temperature sensing spring 540 and the bias spring 550, and when the water-side seating portion 564 is seated on the water-side valve seat 486, the hot water of the water heater is turned on.
- the hot water side seating part 566 is seated on the hot water side valve seat 478, only tap water is spouted, and both the seating parts 564, 566 are seated. If not, water and hot water corresponding to the flow path openings of the water side port 462 and the hot side port 472 are discharged and mixed in the hot water inflow chamber 52 .
- the temperature-sensitive spring 540 for moving the movable valve element 560 is expanded and contracted in a strain state preloaded by the bias spring 550, and the movable valve element 560 is moved in a predetermined range. Slide with ST.
- the guide surface 574 of the movable valve element 560 shown in FIG. 46 is located on the side of the annular locking portion 568 from the hot water introduction flow path 430 toward the hot water inflow chamber 520. It is formed in an inclined curved shape.
- the guide surface 574 is curved for the following reason. Hot water from the hot water introduction flow path 4330 flows into the hot water inflow chamber 5200 through the hot water side port 472, and at this time, if the guide surface 574 is made a flat surface, Turbulence is likely to occur due to an increase in the flow channel area. If this hot turbulent water passes between the windings of the bias spring 550, it will cause abnormal noise.
- the above-mentioned curved guide surface 574 maintains a laminar flow state even if the flow path area increases, so that it does not cause abnormal noise when passing between the windings of the bias spring 550.
- the water-side port 462 and the hot-side port 472 of the casing body 450 have a water-side connection portion 464 and a hot-side connection. Parts 4 7 4 are formed at two places each. Outflow holes of the hot water introduction flow path 4330 are arranged at the position of the hot water side connecting portion 474. With this arrangement, when the hot water from the hot water inlet channel 4330 hits the hot water side connecting portion 474, its flow changes in the circumferential direction, and then the hot water side port 472 From the entire area into the hot water inflow chamber 520.
- the hot water flowing from almost the entire area of the hot water port 472 is uniformly and sufficiently mixed with the water flowing from the water introducing passageway 420 through the water side port 462. Further, as shown in FIG. 44, since the position of the 0 ring 45 3 is set on the temperature control dial 44 side, the 0 ring 45 The hot water flows around the gap 431 on the third side and flows from the hot water side port 472 into the hot water inflow chamber 5200, whereby more uniform mixing is performed.
- the hot-side valve seat 4 7 8 has a seat surface that contacts the hot-side seating portion 5 6 6 of the movable valve body 5 60.
- the sheet surface 4778a and the guide projection 476 are configured for the following reason.
- the sheet surface 478a requires high surface accuracy, and even if there is some unevenness, the sealing performance is improved when the hot side seating portion 566 of the movable valve element 560 comes into contact. As a result, hot water leaks and deviates from the target set temperature. Therefore, we would like to make the sheet surface 4788a a mirror surface, but if we split the structure to form the hot water side connection part 474, the parting line PLa would be indicated by a broken line on the sheet surface 478a. It is formed like this. In view of this, a seat surface 478a is formed at the tip end surface using a cylindrical core.
- a parting line PL is formed along the outer periphery of the core.
- a guide is provided so that the hot side seating part 566 of the movable valve element 560 does not run on the parting line PL.
- the projections 4 7 6 are formed.
- the heat insulating member 410 mounted inside the outer casing 310 shown in FIG. 44 and a cooling structure constituted by the heat insulating member 410 and the like.
- the heat insulating member 410 has a cylindrical shape formed of a resin.
- a cooling channel 424 communicating with the water introduction channel 420 is formed between the heat insulating member 410 and the outer casing 310.
- the cooling flow path 424 is arranged so as to substantially surround the hot water introduction flow path 430 via the heat insulating member 410.
- the reason for providing such a heat insulating member 410 and the cooling flow path 424 is as follows.
- a hot water introduction flow path 4300 is provided on the temperature adjustment dial 4400 side. For this reason, the heat of the hot water flowing through the hot water introduction flow path 43 0 may be transmitted to the temperature control dial 44 0 to increase the temperature. Therefore, a heat insulating member 410 is provided to cut off the heat of the hot water introduction flow path 430, and further, the water of the water introduction passage 422 is guided through the cooling flow path 424, and the heat insulation member 410 is provided. The temperature of the temperature control dial 44 is prevented from rising by cooling ing.
- the spacer 590 interposed between the movable valve element 560 and the temperature-sensitive spring 540 will be described.
- the spacer 590 includes a spring receiving portion 592 for receiving the support end 544 of the temperature-sensitive spring 540, and a spring receiving portion 590. 2 and a plurality of legs 5 9 4 projecting in parallel from each other, and a spring support is provided between the legs 5 94 in the inter-leg flow path 5 96 6 for flowing water from the water side port 4 62.
- the central portion of the portion 592 is formed in the through flow channel 598, respectively.
- the reason why the spacer 590 secures a predetermined distance between the movable valve element 560 and the temperature-sensitive spring 540 is as follows.
- the mixing ratio of hot and cold water is changed by sliding the movable valve element 560, but the water that has passed from the water-side port 462 to the water that has passed through the leg 590 of the spacer 590 and the hot-water port
- the hot water from step 472 is mixed and flows through the through flow path 598 of the spacer 590 to the temperature sensing spring 540 side.
- the temperature-sensitive spring 540 It acts so as to come into contact with the temperature-sensitive spring 540 after being sufficiently mixed. Therefore, the temperature-sensitive spring 540 contacts the hot water after the hot water is sufficiently mixed, so that the operation is stable and the water discharge temperature can be adjusted accurately. However, since the flow does not directly hit the temperature-sensitive spring 540 and flows between the leg 590 of the spacer 590 and the fluid pressure, the temperature-sensitive spring 540 does not vibrate. And stable operation can be obtained.
- the distance secured by the spacer 590 between the temperature sensing spring 540 and the movable valve element 560 is as follows:
- the distance is set appropriately in accordance with the size of the hot and cold water mixing valve 400 in consideration of a distance that does not cause hunting due to a response delay. For example, 5 mm to l O mm.
- the spacer 590 is formed integrally with the movable valve body 560, but is not limited thereto, and may be formed integrally. In this case, the number of parts can be reduced.
- the water-side valve seat member 480 is a valve seat main body 480 having a recess 481 forming a hot and cold mixing chamber 510 together with the casing main body 550. And a water-side valve seat 486 formed on an end face of the valve seat body 482, and a female threaded portion 455 formed on the valve seat body 482 and the casing body 450.
- the temperature-sensitive spring 540 is made of high-rigidity wire with a wire diameter of 2 mm ⁇ , processed into a coil, and then the supporting end 546 is subjected to an end face treatment such as grinding, and then the shape memory is stored. It has been heat treated to add properties.
- the slip pusher 580 is made of a heat-resistant resin material, such as polyacetal or fluororesin, and both surfaces are mirror-finished. Various materials such as metals and ceramics can be used for the slipper 580 as long as it is a member having heat resistance and a mirror surface.
- the male thread 4 8 4 on the water-side valve seat member 4 8 0 is connected to the casing body 4 while the tip of the leg 5 9 4 is in contact with the annular locking portion 5 6 8 of the movable valve 5 6 0. Screw it into the female screw part 4 55 on the 50 side.
- the water-side valve seat member 480 is mounted on the casing body 450.
- the rotational force and the pressing force when the water-side valve seat member 480 is screwed are applied to the temperature-sensitive spring 540 through the slipper 580, but Since the lip spring 580 is a mirror surface and the temperature-sensitive spring 540 has high rigidity, it slides on the slip-type spring 580 and generates a torsion force on the temperature-sensitive spring 540. It acts only as a pressing force without being applied. Therefore, the temperature-sensitive spring 540 is not assembled in the hot and cold water mixing chamber 510 under a torsional load, and does not expand and contract under the torsion. It does not impair the sealing performance by tilting 60. Further, the temperature-sensitive spring 540 has a small distortion, has a small hysteresis, can control the temperature of the mixed hot and cold water with high precision, and has excellent durability.
- the preload adjusting device 600 includes a liner 610 supporting the support end 554 of the bias spring 550 and a slide for moving the liner 610 in the axial direction. Pindle 630 and
- the liner 6 10 includes a cylindrical main body 6 12 having a bottomed hole 6 11, a spring receiving portion 6 1 formed at an end of the cylindrical main body 6 12 and receiving one end of a bias spring 550. 5, a first guide portion 6 14 and a second guide portion 6 16 (FIG. 45) formed on the outer peripheral portion of the cylindrical main body portion 6 12, and an inner peripheral portion of the cylindrical main body portion 6 12 And a first female screw portion 622 and a second female screw portion 624 formed in the portion.
- the first and second guide portions 6 14 and 6 16 are positioned at a position of 18 ( ⁇ ) in the circumferential direction and coincide with the engaging ends of the first and second female screw portions 622 and 624.
- the guide grooves 6 14 a and 6 16 a are provided along the axial direction of the cylindrical main body 6 12. 6a is slidably fitted along guide rails 458, 459 formed on the inner periphery of the casing body 450.
- the rotary body 632 and the protrusion 634 are integrally formed of resin.
- the protrusion 634 passes through the through hole 457 of the casing body 450, and the outer periphery of the protrusion 634 is formed. It is fixed to a temperature control dial 440 via a spline and a mounting part 442.
- First and second external thread portions 636 and 638 that are screwed into the first and second internal thread portions 622 and 624 are formed on the outer peripheral portion of the rotating main body 632.
- protrusions 639 are formed on the crests of the first and second male screw portions 636 and 638.
- the protrusion 639 is formed so as to be slightly in contact with the valleys of the first and second female screw portions 622 and 624 to provide sliding resistance.
- the temperature of the installed temperature indicated on the outer peripheral portion of the temperature adjusting dial 440 is used as an index. Rotate the degree adjustment dial 440 in a predetermined direction. The rotation of the temperature control dial 440 causes the spindle 630 to rotate integrally with the temperature control dial 440. As a result, the first and second male screw portions 636, 638 on the outer periphery of the spindle 6330 are connected to the first and second female screw portions 62, 2, 6 of the liner 610.
- the liner 6 10 Since the rotation driving force is transmitted to the liner 6 10 because it is screwed into the liner 4, the liner 6 10 is connected to the first and second guide parts 6 14, 6 16 and the guide rail. Since rotation is regulated by 458 and 549, the shaft moves in the axial direction.
- the bias spring 550 is displaced by the movement of the liner 610 in the axial direction.
- the movable valve element 560 is moved by the displacement of the bias spring 550, and the temperature-sensitive spring 540 is displaced to a position where it is balanced with the temperature-sensitive spring 540, thereby changing the target temperature. .
- the bias spring 550 receives no preloading force in the same direction as the biasing direction of the liner 610 and receives no torsional force. . Therefore, even if the temperature-sensitive spring 540 has a small spring constant, a force for inclining the movable valve element 560 is not applied via the bias spring 550. As a result, the movable valve element 560 can perform a stable sliding operation even if the supporting force of the temperature sensing spring 540 and the bias spring 550 is weak.
- the preload adjusting device 600 To assemble the preload adjusting device 600, screw the spindle 6330 into the liner 6100 and attach it to the guide rails 458, 459 of the casing body 450.
- the first and second guides 6 14, 6 16 of the inner 6100 are aligned, and the projection 6 3 4 is aligned with the through hole 4 5 7, so that the liner 6 10 and the spindle 6 3 0 Is inserted into the casing body 450, and a temperature control dial 450 is further attached.
- the liner 610 and the spindle 6330 are formed by the first and second external thread portions 636, 638 and the first and second internal thread portions 622, 6224, which are so-called 2 Since it is a threaded thread, it is easy to engage with the screw, and moreover, the first and second female threaded portions 6 22, Since there are 6 2 4 engaging ends, it is easy to perform automatic assembly easily using this as a mark.
- the liner 610 inserts the first and second guide portions 614 and 616 into the casing body 450 in accordance with the guide rails 458 and 449. It is better to make sure that it is aligned than by other means, for example, through a spline. it can.
- the pitch is large and the screw spring can be easily mounted as described above. Easy return by 50 spring force.
- the protrusion 639 formed on the crest of the first and second male screw portions 636, 638 is formed by the first and second female screw portions 622, 624. Because of the sliding resistance with the valley, the spindle 6300 does not return due to the spring force of the bias spring 5550. Further, since the spindle 630 is formed of a resin, it is easy to form the projection 636.
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Temperature-Responsive Valves (AREA)
- Sorption Type Refrigeration Machines (AREA)
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Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940702942A KR100288683B1 (ko) | 1992-12-25 | 1993-12-24 | 온수혼합장치 |
DE69331744T DE69331744T2 (de) | 1992-12-25 | 1993-12-24 | Mischgerät für heiss- und kaltwasser |
US08/290,807 US5579992A (en) | 1992-12-25 | 1993-12-24 | Combination faucet device |
EP94903105A EP0666442B1 (en) | 1992-12-25 | 1993-12-24 | Hot and cold water mixing apparatus |
AT94903105T ATE214795T1 (de) | 1992-12-25 | 1993-12-24 | Mischgerät für heiss- und kaltwasser |
DK94903105T DK0666442T3 (da) | 1992-12-25 | 1993-12-24 | Blandingsbatteri til blanding af varmt vand med koldt vand |
JP51501994A JP3632207B2 (ja) | 1992-12-25 | 1993-12-24 | 湯水混合装置 |
TW083101400A TW265400B (ja) | 1992-12-25 | 1994-02-19 | |
CN94106204A CN1058078C (zh) | 1993-06-30 | 1994-06-01 | 组合式水龙头 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4/359492 | 1992-12-25 | ||
JP35949292 | 1992-12-25 | ||
JP5/189162 | 1993-06-30 | ||
JP18916293 | 1993-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994015129A1 true WO1994015129A1 (en) | 1994-07-07 |
Family
ID=26505329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/001933 WO1994015129A1 (en) | 1992-12-25 | 1993-12-24 | Hot and cold water mixing apparatus |
Country Status (10)
Country | Link |
---|---|
US (3) | US5579992A (ja) |
EP (1) | EP0666442B1 (ja) |
JP (1) | JP3632207B2 (ja) |
KR (1) | KR100288683B1 (ja) |
AT (1) | ATE214795T1 (ja) |
CA (1) | CA2129997A1 (ja) |
DE (1) | DE69331744T2 (ja) |
DK (1) | DK0666442T3 (ja) |
TW (1) | TW265400B (ja) |
WO (1) | WO1994015129A1 (ja) |
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WO2008069233A1 (ja) * | 2006-12-06 | 2008-06-12 | Toto Ltd. | 湯水混合栓 |
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JP7076978B2 (ja) * | 2017-10-10 | 2022-05-30 | 株式会社Kvk | 混合弁及び混合水栓 |
CN109915626B (zh) * | 2017-12-12 | 2020-04-03 | 翰优企业有限公司 | 旋启式精密陶瓷控制平衡阀 |
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- 1993-12-24 WO PCT/JP1993/001933 patent/WO1994015129A1/ja active IP Right Grant
- 1993-12-24 AT AT94903105T patent/ATE214795T1/de not_active IP Right Cessation
- 1993-12-24 US US08/290,807 patent/US5579992A/en not_active Expired - Lifetime
- 1993-12-24 DE DE69331744T patent/DE69331744T2/de not_active Expired - Lifetime
- 1993-12-24 CA CA002129997A patent/CA2129997A1/en not_active Abandoned
- 1993-12-24 KR KR1019940702942A patent/KR100288683B1/ko not_active IP Right Cessation
- 1993-12-24 EP EP94903105A patent/EP0666442B1/en not_active Expired - Lifetime
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- 1994-02-19 TW TW083101400A patent/TW265400B/zh active
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1996
- 1996-08-19 US US08/699,486 patent/US5738275A/en not_active Expired - Lifetime
- 1996-11-12 US US08/746,644 patent/US5806761A/en not_active Expired - Fee Related
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008069233A1 (ja) * | 2006-12-06 | 2008-06-12 | Toto Ltd. | 湯水混合栓 |
JPWO2008069233A1 (ja) * | 2006-12-06 | 2010-03-18 | Toto株式会社 | 湯水混合栓 |
JP2012032005A (ja) * | 2006-12-06 | 2012-02-16 | Toto Ltd | 湯水混合栓 |
US8353462B2 (en) | 2006-12-06 | 2013-01-15 | Toto Ltd. | Thermally actuated hot and cold water mixing valve configured to minimize valve hunting |
CN102062235B (zh) * | 2006-12-06 | 2013-08-07 | Toto株式会社 | 热水冷水混合栓 |
US8870085B2 (en) | 2006-12-06 | 2014-10-28 | Toto Ltd. | Thermally actuated hot and cold water mixing valve configured to minimize valve hunting |
Also Published As
Publication number | Publication date |
---|---|
KR950700508A (ko) | 1995-01-16 |
US5579992A (en) | 1996-12-03 |
EP0666442B1 (en) | 2002-03-20 |
ATE214795T1 (de) | 2002-04-15 |
TW265400B (ja) | 1995-12-11 |
EP0666442A4 (en) | 1996-07-17 |
CA2129997A1 (en) | 1994-07-07 |
DE69331744T2 (de) | 2002-11-21 |
KR100288683B1 (ko) | 2001-11-22 |
US5806761A (en) | 1998-09-15 |
DE69331744D1 (de) | 2002-04-25 |
DK0666442T3 (da) | 2002-07-15 |
EP0666442A1 (en) | 1995-08-09 |
JP3632207B2 (ja) | 2005-03-23 |
US5738275A (en) | 1998-04-14 |
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