KR101536120B1 - Thermostat for mixing hot water and cold water - Google Patents

Thermostat for mixing hot water and cold water Download PDF

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Publication number
KR101536120B1
KR101536120B1 KR1020140004212A KR20140004212A KR101536120B1 KR 101536120 B1 KR101536120 B1 KR 101536120B1 KR 1020140004212 A KR1020140004212 A KR 1020140004212A KR 20140004212 A KR20140004212 A KR 20140004212A KR 101536120 B1 KR101536120 B1 KR 101536120B1
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KR
South Korea
Prior art keywords
water
cold water
spring
memory alloy
faucet
Prior art date
Application number
KR1020140004212A
Other languages
Korean (ko)
Inventor
조상용
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조상용
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Priority to KR1020140004212A priority Critical patent/KR101536120B1/en
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Publication of KR101536120B1 publication Critical patent/KR101536120B1/en

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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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
    • 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
    • F16K19/00—Arrangements of valves and flow lines specially adapted for mixing fluids
    • F16K19/003—Specially adapted for boilers
    • 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
    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

The present invention relates to a water saving type hot and cold water mixing valve comprising: a cylindrical case (10); a mixing chamber (20); a handle for temperature control having a cylindrical groove (32) formed on a center of one end to insert one end of a bias spring (21); a shape-memory alloy spring (40); and a spring fixing unit (50) fixated in an inner right end of the cylindrical case (10) such that the right end of the shape-memory alloy spring (40) is inserted to be fixated. The present invention can supply mixed water at a predetermined temperature in accordance to a set temperature by applying the shape-memory alloy spring applying heavy load in a small displacement of a faucet to supply hot and cold water in a bathroom, a kitchen, a washroom, the bias spring, and the mixing chamber; thereby reducing waste of water due to the temperature control and allowing a user to safely use the faucet. The present invention is manufactured as a compatible part with a part of an existing mixing faucet to be miniaturized; intactly utilizes the existing mixing faucet to save resources and reduce financial burdens; simplifies parts coupled to therein to facilitate manufacture and coupling; minimizes costs required for the manufacture of the product to have excellent economical efficiency; and is stably used for a long time without malfunctions.

Description

[0001] The present invention relates to a thermostat for mixing hot water and cold water,

More particularly, the present invention relates to a hot and cold water mixing valve that mixes hot water supplied from a boiler or the like with cold water (direct water) such as tap water to discharge mixed water. More specifically, The present invention relates to a water-saving type hot and cold water mixing valve that facilitates the mixing of warm water with a spring, a bias spring, and a flow path structure of a mixing chamber for mixing hot water and cold water.

Generally, in the case of a faucet installed in a bathroom, a kitchen, or a washroom, the mixed water having a set temperature is inconveniently not continuously discharged at a constant temperature. In other words, the mixed water should be discharged at a constant temperature in the mixed faucet, but the temperature is not adjusted well, and sudden hot water may come out and the child or the elderly may be burned. This is due to the structure of the existing mixed faucet, which simply controls the temperature with a fixed cross-sectional flow area.

That is, irrespective of the set temperature, since the temperature and the supply amount of the cold water change according to the environmental change, the mixed water whose setting temperature is neglected is discharged, but there is no mechanism to control the mixed water. The user can adjust the temperature of the mixed water while sensing the temperature of the mixed water by using a hot water or a cold hand to turn the tap of the shower when the shower is in the public bath. There is a problem that water is unnecessarily drained to obtain water, and water resources are wasted. Also, when the temperature of the mixed water is adjusted as described above, the temperature of the mixed water is controlled by the other person using the other shower There is a problem that the temperature of the mixed water discharged from the shower is changing.

Also, in the past, a hot and cold water mixing valve using a wax element has been generally used. However, the hot and cold water mixing valve using the wax element utilizes physical properties of a material having a large thermal expansion coefficient. The return compression spring which helps to push and pull the flow control valve to regulate the amount of cold water is also required to have a low spring constant so that the frictional force during operation of the flow control valve There is a problem that the flow control valve is operated in a delayed manner because it acts more than the thermal expansion force of the wax element or the expansion force of the return compression coil spring.

In the case of the wax element, if it is used for a long time, the inherent characteristic of the material is lost and it is difficult to expect a desired operating performance. When the supplied amount of hot water or cold water suddenly changes, There is a problem that the temperature of the mixed water rises or falls during the delay time of ~ 3 seconds accompanied by over shooting phenomenon.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a shape memory alloy spring which exerts a large load at small displacements in a faucet for supplying cold water from a bathroom, kitchen, The present invention provides a water-saving type hot and cold water mixing valve that can supply mixed water of a predetermined temperature according to a set temperature by using a chamber, thereby reducing water waste due to temperature control and allowing a user to use it more safely.

Another object of the present invention is to provide a hot and cold water mixing valve of the present invention which is compatible with a component called a " eccentric union ", which is a part of a pre-installed hot and cold water mixing faucet, In order to reduce the economic burden by not using mixed water faucet as it is and using the mixed water at the set temperature safely and by not using the existing mixed water faucet but by not purchasing the eco-friendly and expensive automatic thermostatic water faucet The present invention is to provide a water-saving type hot and cold water mixing valve having a shape memory alloy spring, a bias spring, and a mixing chamber,

It is a further object of the present invention to provide a method of manufacturing a product having a simple structure and a miniaturized shape, thereby minimizing the cost of manufacturing the product, thereby providing excellent economical efficiency and long service life Water type cold water mixing valve.

In order to accomplish the above object, the water saving type cold water mixing valve of the present invention comprises a circular tube case (10) having a hot water inlet (11), a cold water inlet (12), a mixed water outlet (13) 10); A mixing chamber 20 which is inserted into the circular tube case 10 movably in the left and right direction; And is engaged with the stopper ring 31 fitted to the handle member 14 for temperature adjustment so as to be engaged with the stopper ring 31 fitted to the inner surface of the inner tube case 10 and is inserted into a cylindrical groove 32 formed at the center of one end portion, A temperature control handle 30 into which an end is inserted; A shape memory alloy spring in which a left end is inserted into a cylindrical groove 23 formed at the center of the right end of the mixing chamber 20 formed at the center of the left end of the cylindrical groove 22 into which the other end of the bias spring 21 is inserted, (40); And a spring stopper (50) fixed to the right end of the inner tube case (10) and inserted into the right end of the shape memory alloy spring (40).

The present invention adopts a shape memory alloy spring, a bias spring, and a mixing chamber designed for the present invention, taking the form of an eccentric union as a part of a faucet that supplies cold water from a bathroom, a kitchen, a washroom, etc. and exerting a large load at a small displacement By making it possible to supply mixed water of a certain temperature according to the set temperature, it is possible to reduce the waste of water due to the temperature control and to use it more safely by the user, and it is manufactured in the form of parts compatible with the parts of the existing mixed water faucet, Can be used as it is, and it is possible to reduce resource waste, and it is possible to simplify and miniaturize the parts to be coupled to the inside, thereby being excellent in usability, minimizing the cost for manufacturing the product, A long shelf life There is.

1 is an external perspective view (corresponding to a hot water side eccentric union of a conventional mixed faucet) of the water-saving type cold water mixing valve of the present invention,
FIG. 2 is a sectional view of the shape memory alloy spring in a contracted state in accordance with the water-saving type cold / warm water mixing valve of the present invention,
FIG. 3 is a sectional view of the shape memory alloy spring according to an embodiment of the present invention,
FIG. 4 is an external perspective view of the water-saving type cold / warm water mixing valve of the present invention,
5 is a cross-sectional view of the water-saving type cold / warm water mixing valve of the present invention,
FIG. 6 is a view showing an external view of a water-saving type cold water mixing valve of a type that can be applied to a hot water / cold water mixing faucet as another application example of the cold water / cold water mixing valve of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the water-saving type cold water mixing valve of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an external perspective view (corresponding to a hot water side eccentric union of a conventional mixed water faucet) of the water-saving type cold water mixing valve of the present invention, FIG. 2 is a contracted state sectional view of the shape memory alloy spring according to the water- 3 is an exploded sectional view of the shape memory alloy spring according to the present invention watertight type cold water mixing valve, FIG. 4 is an external perspective view of the watertight type cold water mixing valve of the present invention, and FIG. 5 is a cross- FIG. 6 is a view showing an external appearance of a water-saving type cold water mixing valve of a type applicable to a hot water / cold water mixing faucet as another application example of the hot water / cold water mixing valve of the present invention The cold water and cold water mixing valve of the present invention comprises a circular tube case 10 having a hot water inlet 11, a cold water inlet 12, a mixed water outlet 13 and a temperature control handle mounting hole 14; A mixing chamber 20 which is inserted into the circular tube case 10 movably in the left and right direction; And is engaged with the stopper ring 31 fitted to the handle member 14 for temperature adjustment so as to be engaged with the stopper ring 31 fitted to the inner surface of the inner tube case 10 and is inserted into a cylindrical groove 32 formed at the center of one end portion, A temperature control handle 30 into which an end is inserted; A shape memory alloy spring in which a left end is inserted into a cylindrical groove 23 formed at the center of the right end of the mixing chamber 20 formed at the center of the left end of the cylindrical groove 22 into which the other end of the bias spring 21 is inserted, (40); And a spring retainer 50 fixed to the right end of the inner tube case 10 and inserted with the right end of the shape memory alloy spring 40 inserted therein.

An O-ring 33 is preferably mounted between the cylindrical tube case 10 and the inner side end of the cylindrical tube case 10 to maintain airtightness.

The mixing chamber 20 has grooves 20a for cooling water flow and a flow passage 20b for mixed water therein.

The water-saving cold water mixing valve according to the present invention can be used as a component that is compatible with the eccentric union, which is a part of the conventional water-mixed water faucet, to reduce the size of the product and to use the existing mixed faucet as it is, It is preferable.

delete

Before explaining the operation of the water-saving type cold water mixing valve of the present invention constructed as described above, the technical principle employed in the present invention will be described.

As a technology adopted in the present invention, first, it is necessary to confirm that the shape memory alloy spring 40 is heat-treated to suit the application, causing a phase change at a temperature of several degrees and expanding. Second, the bias spring 21 The shape memory alloy spring 40 and the biasing spring 21 are to be pressed against each other at a specific temperature interval in the present invention. Thirdly, the groove 20a of the water channel into which the cold water can flow into the mixing chamber 20 at the outer periphery of the mixing chamber 20 so that the channel is always secured even if the mixing chamber 20 rotates in the circular tube case 10, . When the water flows into the hole 20b which is penetrated into the mixing chamber 20 through the groove 20a in the axial direction, that is, the mixed water flow passage 20b and contacts the shape memory alloy spring 40, The mixing chamber 20 moves left and right depending on the magnitude of the elastic force of the shape memory alloy spring 40 and the biasing spring 21 to change the sectional area of the passage between the hot water inlet 11 and the cold water inlet 12, It is necessary to keep the mixing water at a constant temperature even in a sudden change of the mixing ratio. The mixing chamber 20 is designed to move in the direction of opening the one flow path with respect to the hot water inlet 11 and the cold water inlet 12 of the circular tube case 10 and in the direction of closing the other flow path do.

Next, the operation of the water-saving type cold water mixing valve of the present invention constructed as described above will be described in detail.

The cold water mixing valve according to the present invention is compatible with the existing parts in the form of a component compatible with the hot water side eccentric union which is a part of the conventional wall-mounted mixing faucet. The difference from the existing parts is that cold water There is an inlet 12. The supply of cold water to the cold water inlet 12 is a cold water side eccentric union having another cold water outlet mated with the mixing valve of the present invention and is also compatible with the conventional cold water side eccentric union, The cold water outlet for supplying cold water to the mixing valve of the present invention is further provided.

In this way, the hot water enters through the hot water inlet 11 of the mixing valve of the present invention, and the cold water passes through the cold water outlet additionally provided to the cold water side eccentric union, And enters the inlet 12. When the mixed water flows along the flow passage 20b of the mixed water in the mixing chamber 20 and contacts the shape memory alloy spring 40, the shape memory alloy spring 40 expands or contracts according to the water temperature. Here, the expansion of the shape memory alloy spring 40 means that the expansion force of the shape memory alloy spring 40 presses the elastic force of the bias spring 21 to compress the same, and at the same time, the mixing chamber 20 moves so much, Sectional area of the cold water inlet 11 is increased and the cross-sectional area of the cold water inlet 12 is increased. Conversely, the shrinkage of the shape memory alloy spring 40 means that the expansion force of the shape memory alloy spring 40 is pressed by the elastic force of the bias spring 21 and is compressed accordingly.

When the temperature control handle 30 is set to a certain position and the mixed water of a certain temperature is discharged, the supply temperature of the hot water becomes higher or the water pressure of the hot water becomes higher, The cross sectional area of the hot water inlet 11 is reduced and the cross sectional area of the cold water inlet 12 is increased as much as the shape memory alloy spring 40 expands and the mixing chamber 20 is pushed out. .

When the temperature adjusting handle 30 is rotated clockwise in the high temperature direction to set the temperature higher than the first set temperature, the bias spring 21 is compressed to increase the elastic force and simultaneously push the mixing chamber 20 At this time, the cross-sectional area of the flow path of the hot water inlet 11 becomes large and the cross-sectional area of the flow path of the cold water inlet 12 becomes small, so that the mixed water of higher temperature is discharged. At this time, the shape memory alloy spring 40 is exposed to the mixed water of higher temperature and expands, but the biasing spring 21 is not compressed due to the compression of the biasing spring 21 and the biasing spring 21 is not expanded. The mixed water of one temperature is discharged.

While the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited thereto and that various changes and modifications may be made therein without departing from the scope of the invention.

10: Circular clearance case 11: Hot water inlet
12: cold water inlet 13: mixed water outlet
14: Handle for temperature control 20: Mixing chamber
20a: groove for cold water flow 20b: flow passage for mixed water
21: bias spring 22: cylindrical groove
23: cylinder groove 30: temperature control handle
31: stopper ring 32: cylindrical groove
33: O-ring 40: shape memory alloy spring
50: Spring stopper

Claims (4)

(10) having a hot water inlet (11), a cold water inlet (12), a mixed water outlet (13), and a temperature control handle mounting hole (14); A mixing chamber 20 which is inserted into the circular tube case 10 movably in the left and right direction; And is engaged with the stopper ring 31 fitted to the handle member 14 for temperature adjustment so as to be engaged with the stopper ring 31 fitted to the inner surface of the inner tube case 10 and is inserted into a cylindrical groove 32 formed at the center of one end portion, A temperature control handle 30 into which an end is inserted; A shape memory alloy spring in which a left end is inserted into a cylindrical groove 23 formed at the center of the right end of the mixing chamber 20 formed at the center of the left end of the cylindrical groove 22 into which the other end of the bias spring 21 is inserted, (40); And a spring retainer (50) fixed to the right end of the inner tube case (10) and inserted into the right end of the shape memory alloy spring (40). The water reducing type cold water mixing valve according to claim 1, wherein the mixing chamber (20) has grooves (20a) for cooling water flow at its outer periphery and a flow passage (20b) . 3. The water-saving type cold water mixing valve according to claim 1 or 2, wherein the water-saving warm / cold water mixing valve is in the form of a component compatible with an eccentric union which is a part of a conventional wall-cold water mixing faucet. delete
KR1020140004212A 2014-01-13 2014-01-13 Thermostat for mixing hot water and cold water KR101536120B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140004212A KR101536120B1 (en) 2014-01-13 2014-01-13 Thermostat for mixing hot water and cold water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140004212A KR101536120B1 (en) 2014-01-13 2014-01-13 Thermostat for mixing hot water and cold water

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KR101536120B1 true KR101536120B1 (en) 2015-07-14

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KR1020140004212A KR101536120B1 (en) 2014-01-13 2014-01-13 Thermostat for mixing hot water and cold water

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033327U (en) * 1973-07-19 1975-04-10
JPH0643455U (en) * 1992-11-11 1994-06-10 東陶機器株式会社 Thermostat mixing valve
JPH10160037A (en) * 1996-11-26 1998-06-16 Tokin Corp Thermostat mixing valve
JP4938794B2 (en) * 2006-12-06 2012-05-23 Ｔｏｔｏ株式会社 Hot water tap

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033327U (en) * 1973-07-19 1975-04-10
JPH0643455U (en) * 1992-11-11 1994-06-10 東陶機器株式会社 Thermostat mixing valve
JPH10160037A (en) * 1996-11-26 1998-06-16 Tokin Corp Thermostat mixing valve
JP4938794B2 (en) * 2006-12-06 2012-05-23 Ｔｏｔｏ株式会社 Hot water tap

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