JPH0573059U - Hot and cold water mixing tap - Google Patents

Abstract

(57) [Abstract] [Purpose] When using a wire to remotely control the thermostat placement position and adjust the set temperature, ensure that the temperature adjustment error due to the bending of the wire can be prevented. Provide what you did. [Arrangement] Remotely changing the arrangement position of the thermostat 44 of the automatic temperature control unit 16 having the thermostat 44 arranged inside the mixed water passage 17 and automatically controlling the mixing ratio of hot water and water. Hot and cold water mixing tap 10
In the above, the moving body 34, which moves back and forth with the rotation of the rotatable temperature control handle 33, is connected with the slider 26 holding the end of the thermostat 44 by the wire 22, and the slider 26 is A pulling force is applied to the wire 22 by a safety spring 28 that biases the wire 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mixes hot water (hot water) supplied from a hot water supply source and low temperature water (water) supplied from a water supply source to discharge hot water of a desired temperature from a discharge port. More particularly, the present invention relates to a hot and cold water mixing tap in which an arrangement position of a thermostat provided inside an automatic temperature control unit for maintaining the temperature of the mixed water at a set temperature can be moved by remote control.

[0002]

[Prior Art]

 In places such as kitchens, bathrooms, and washrooms where hot water of approximately 30 to 45 ° C is used, hot water and water are supplied at the same time, and an appropriate amount of these are mixed to produce hot water of appropriate temperature. A stopper is used.

Conventionally, various types of hot and cold water mixing plugs of this kind have been known, but typical ones are those using a thermostat mixing valve, a single lever type, and these. Examples include those used in combination.

Here, the former has a thermostat (temperature sensor) provided in the mixing water channel, and the thermostat automatically controls the mixing ratio of hot water and water to bring the temperature of the mixing hot water to a set temperature. It is equipped with an automatic temperature control unit to maintain and a set temperature control unit that adjusts the set temperature of this automatic temperature control unit by changing the arrangement position of the thermostat. Traditionally, wires have been used to remotely change position.

That is, for example, as shown in Japanese Utility Model Laid-Open No. 3-36580, a rotatable temperature control handle and a slider are connected via a push-pull wire, and the push-pull wire is attached to a faucet body at a base portion. By disposing a counter spring between the slider and the slider and unitizing each of these parts, the wire is resisted against the elastic force of the counter spring as the temperature control handle rotates. It is known that the slider is pushed out and the arrangement position of the slider and, by extension, the thermostat connected to the slider is changed according to the pushing amount.

[0006]

[Problems to be solved by the device]

 However, as in the above-mentioned conventional example, when the wire is pushed out to generate a compressive force in the wire to change the arrangement position of the slider, and by extension, the thermostat, the wire is bent due to compression, Since the amount of this deflection is not constant, there is a problem that an error may occur in temperature control.

In view of the above, the present invention is capable of reliably preventing an error in temperature adjustment due to bending of a wire when using a wire to remotely adjust the setting position of a thermostat to adjust a set temperature. The purpose is to provide what has been done.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the hot and cold water mixing valve according to the present invention comprises a thermostat disposed inside a mixing water passage and automatically controlling a mixing ratio of hot water and water. In the hot and cold water mixing tap whose remote control position is set, the moving body that moves back and forth with the rotation of the rotatable temperature control handle and the slider that holds the end of the thermostat are wired. And a pulling force is applied to the wire by a safety spring that biases the slider to one side.

[0009]

[Action]

 According to the present invention configured as described above, the pulling force due to the elastic force of the safety spring always acts on the wire through the slider, so that the wire is always pulled without being compressed. Therefore, the bending does not occur. Therefore, by rotating the temperature control handle, it is possible to constantly and stably change the arrangement position of the slider, and by extension, the thermostat, against the elastic force of the safety spring.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 7, a hot and cold water mixing tap 10 includes a water inflow passage 12 connected to a water supply source 11, a hot water inflow passage 14 connected to a hot water supply source 13, and water and hot water are mixed to generate mixed hot water. It is arranged between the mixing chamber 15 and the water inflow passage 12 and the hot water inflow passage 14 and the mixing chamber 15, and the flow rate ratio of water and hot water flowing into the mixing chamber 15 is automatically adjusted according to the set temperature. Automatic temperature control section 16, a mixed water flow path 17 communicating with the mixing chamber 15, and a water bypass flow extending from the middle of the water inflow path 12 and the hot water inflow path 14 to bypass the automatic temperature control section 16. A passage 18a and a hot water bypass passage 18b, an opening / closing and flow rate adjusting section 19 for opening and closing and controlling the flow rate from the bypass flow paths 18a and 18b and the mixed water flow path 17, and a downstream side of the opening and closing and flow rate adjusting section 19. Vomiting in position It is composed of an outlet 20.

A set temperature adjusting unit 21 for freely adjusting the set temperature here is connected to the automatic temperature adjusting unit 16. The set temperature adjusting unit 21 includes a wire 22. The temperature of the automatic temperature controller 16 can be set by remote control via the remote controller.

As a result, the automatic temperature control unit 16 automatically adjusts the mixing ratio of water and hot water to generate mixed hot water at a predetermined temperature (suitable temperature) in the mixing chamber 15, and the opening / closing and flow rate control unit 19 controls the water bypass. By adding an appropriate flow rate of water or hot water to the mixed hot water via the flow passage 18a or the hot water bypass flow passage 18b, a temperature lower or higher than the set temperature (suitable temperature) set by the automatic temperature control unit 16 can be obtained. The hot water can be easily obtained and discharged from the discharge port 20.

Further, at the branch point of the water bypass passage 18 a in the middle of the water inflow passage 12 connected to the water supply source 11, the water supplied from the water supply source 11 is branched into two passages, and A check valve (double check valve) 23a for preventing backflow in the hot water supply passage is provided at the branch point of the hot water bypass passage 18b in the middle of the hot water inflow passage 14 connected to the hot water supply source 13. A check valve (double check valve) 23b is provided for branching the hot water supplied from the source 12 into two flow paths and for preventing back flow in each flow path.

That is, the water supplied from the water supply source 11 is branched into the two flow paths, that is, the water inflow path 12 and the water bypass flow path 18 a by passing through the check valve 23 a, and the water is supplied from the hot water supply source 13. The supplied hot water is branched into the two flow paths, that is, the hot water inflow path 14 and the hot water bypass flow path 18b by passing through the check valve 23b.

FIG. 1 shows a vertical front view of the hot and cold water mixing stopper 10.

In the figure, reference numeral 31 is a main body of a faucet, which is equipped with an automatic temperature control section 16 inside the main body 31 and which is used to remotely control the automatic temperature control section 16. A portion 21 is provided separately from the main body 31, and both 16 and 21 are connected by a wire 21 for remote operation, and the wire 21 is covered with an outer cover 24.

The main body 31 has a water inflow path 12, a hot water inflow path 14, and a discharge flow path 36 built therein, and the cold water flowing in the water inflow path 12 and the hot water flowing in the hot water inflow path 14 have automatic temperatures. It is configured to flow through the discharge flow path 36 from the adjusting section 16 through the opening / closing and flow path adjusting section 19 in order.

Further, in the main body 31, hot water which directly communicates with the discharge flow path 36 via the opening / closing and flow rate adjusting section 19 without passing through the water inflow path 12, the hot water inflow path 14 and the automatic temperature adjusting section 16. A bypass passage 18b and a water bypass passage 18a are provided inside.

The automatic temperature control section 16 has hot water and water temperature control valve seats 39 and 41, respectively, which are formed so as to face the main body 31. Between these valve seats 39 and 41, on the one hand, a hot water control valve 42a corresponding to the hot water temperature control valve seat 39, and on the other hand to the water temperature control valve seat 41, a water control valve 42b. Respectively, and the temperature control valve element 42 is such that one valve (for example, the hot water control valve 42a) operates in the opening direction and the other valve (also the water control valve 42b) operates in the closing direction. It is arranged.

Behind the temperature control valve body 42, a mixed hot water flow passage 17 is formed which communicates with the opening / closing and flow rate control unit 19, and the mixed hot water flow passage 17 is linked to the temperature control valve body 42. A thermostat 44 is arranged to move the temperature control valve body 42 back and forth from the set position due to thermal expansion and contraction of the wax contained therein.

The temperature control valve body 42 is biased toward the thermostat 44 via the valve actuating spring 25, while the base end of the thermostat 44 is connected to the slider 26. There is. The slider 26 is slidably held in a sleeve 27 fixed to the main body 31, and the slider 26 is interposed between the slider 26 and the sleeve 27. A safety spring 28 for urging in the direction of 42 is interposed.

One end of the wire 22 is connected to the slider 26, and the slider 26, and thus the thermostat 44, are configured to move with the movement of the wire 22. The other end is connected to a set temperature adjusting unit 21 that moves the wire 22 back and forth.

That is, the set temperature adjusting unit 21 is movable up and down via a temperature control handle 33 fixed to a rotatable shaft 32 and a lower end of the temperature control handle 33 via splines 32a and 34a. It is mainly composed of a movable body 34 that is non-rotatably connected, and a fixed sleeve 35 that is formed on an inner peripheral surface with a female screw portion 35a that is screwed into a male screw portion 34b formed on the outer peripheral surface of the movable body 34. The end of the wire 22 is fixed to the moving body 34 via a washer 38.

As a result, the moving body 34 also rotates integrally with the rotating shaft 32 as the temperature adjusting handle 33 rotates, and the moving body 34 is screwed with each other via the screw portions 34b and 35a. By moving the inside of the fixed sleeve 35 by screwing, the moving body 34 and thus the wire 22 also move back and forth. Then, by the forward / backward movement of the wire 22 accompanying the rotation operation of the temperature control handle 33, the thermostat 44 is moved back and forth through the wire 22, and the position of the temperature control valve body 42 is set to adjust the temperature of the set temperature. It has been done.

At this time, the safety spring 28 urges the slider 26 to pull the slider 26 in the direction of the thermostat 44, that is, the wire 22 in the direction of the thermostat 44. A tensile force due to the elastic force of the safety spring 28 acts via 26, so that the wire 22 is not always subjected to a compressive force but is always in a pulled state and does not bend. Therefore, by rotating the temperature adjusting handle 33, the arrangement position of the slider 26 and, by extension, the thermostat 44 can be constantly changed against the elastic force of the safety spring 28.

The opening / closing and flow rate adjusting section 19 is mainly composed of a disk-shaped fixed valve body 48 fixed to the main body 31 and a movable valve body 49 superposed on the fixed valve body 48 in a watertight and slidable manner. It is configured. As shown in FIG. 2 to FIG. 6, the fixed valve body 48 has a total of three pieces penetrating in the thickness direction and communicating with the mixed hot water flow passage 17, the hot water bypass flow passage 18b, and the water bypass flow passage 18a, respectively. Inflow holes 51, 52, 53 are provided. These inflow holes 51, 52, 53 are formed on the fixed valve body 48, on the circumference of the same circle drawn concentrically with the fixed valve body 48, and spaced apart from each other in an arc shape along the circumference. There is.

The movable valve element 49 has a smaller diameter than the fixed valve element 48, but when the movable valve element 49 is superposed on the fixed valve element 48, the movable valve element 49 does not protrude from the fixed valve element 48, so that the movable valve element 49 is fixed at any position. The size is set so as to cover the three inflow holes 51, 52, 53 provided in the valve 48, and they are superposed on the fixed valve body 48 so that the linear movement in any direction and the circular movement are possible. ing.

The movable valve body 49 is provided with an outflow portion 54 formed on a lower surface thereof, that is, a sliding contact surface with the fixed valve body 48 so as to communicate with the discharge flow path 36 by cutting out a part of a peripheral edge portion. There is. The outflow portion 54 has an arc shape that is substantially the same size as or slightly larger than the three inflow holes 51, 52, 53 provided in the fixed valve body 48.

A lever handle 56 provided on the upper portion of the main body 31 is connected to the back surface of the movable valve body 49 via an operating force transmission portion 55. The lever handle 56 is provided by extending the lever 56 a to the front side of the main body 31.

Next, the operation of the opening / closing and flow rate adjusting unit 19 will be described with reference to FIGS. 2 to 6.

In FIG. 2, the three inflow holes 51, 52, 53 of the fixed valve body 48 are all blocked by the movable valve body 49 and the discharge is stopped. In this state, the lever 56a of the lever handle 56 is at the center and at the uppermost position.

When the lever 56a is pushed down to the lowest position from the state shown in FIG. 5, the movable valve body 49 is retracted to the state shown in FIG. 3, and the outflow portion 54 is aligned with the mixed hot water inflow hole 51. The hot water of the proper temperature set by the automatic temperature control unit 16 is discharged. The discharge flow rate of the mixed hot water (appropriate hot water) varies depending on the moving position of the movable valve body 49, and the maximum discharge flow rate is obtained when the mixed valve is in the most retracted position (state of FIG. 3).

Subsequently, when the lever 56a is rotated to the right, the movable valve body 49 is also rotated to the right, and the outflow portion 54 is aligned with both the mixed hot water inflow hole 51 and the water inflow hole 53, and the discharge flow path is formed. The low-temperature hot water, in which cold water is mixed with hot water having an appropriate temperature, flows out to 36. In the process of rotation of the movable valve body 49, the matching rate of the mixed hot water inflow hole 51 and the water inflow hole 53 of the outflow portion 54 changes in inverse proportion, that is, the matching rate of the mixed hot water inflow hole 51 decreases and the water inflow. The matching rate of the holes 53 increases. Then, by further rotating to the right, as shown in FIG. 4, the outflow portion 54 is aligned only with the water inflow hole 53, and only low-temperature water is discharged.

When the lever 56a is pulled up in this state, the movable valve body 49 moves forward, and as shown in FIG. 5, the outflow portion 54 and the water inflow portion 53 are out of alignment, which causes the water discharge. Can be stopped.

Further, from the state shown in FIG. 3, by rotating the lever 56a to the left, the same operation as that of aligning the water inflow hole 51 with the outflow portion 54 is performed in the hot water inflow hole 52 as well. Can be done.

That is, the movable valve body 49 can be opened and closed and the flow rate can be adjusted by the relative movement of the movable valve body 49 with respect to the solid valve body 48 as the lever 56a tilts up and down. The relative rotation of the body 49 with respect to the solid valve body 48 makes it possible to adjust the temperature.

[0038]

[Effect of the device]

 Since the present invention is configured as described above, when the wire is used to remotely change the position of the thermostat to adjust the set temperature, the elasticity of the safety spring is applied to the wire through the slider. Since the tensile force due to the force always acts, the wire is always pulled without being subjected to the compressive force, and the wire does not bend. Therefore, by rotating the temperature adjustment handle, it is possible to reliably prevent the temperature adjustment error due to the bending of the wire, and at the same time stably change the arrangement position of the slider and, by extension, the thermostat against the elastic force of the safety spring. Can be made

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a plan view when the discharge is stopped, which is used to explain the operation of the fixed valve body and the movable valve body.

FIG. 3 is a plan view illustrating the operation of the fixed valve element and the movable valve element when the mixed hot water is discharged.

FIG. 4 is a plan view of the mixed hot water and the cold water when discharging the mixed hot water and the operation of the fixed valve body and the movable valve body.

FIG. 5 is a plan view at the time of discharging cold water, which is for explaining the operation of the fixed valve body and the movable valve body.

FIG. 6 is a plan view when the discharge is stopped, which is used for explaining the operation of the fixed valve body and the movable valve body.

FIG. 7 is a block diagram showing a basic configuration.

[Explanation of symbols]

 10 Hot Water Mixing Plug 11 Water Supply Source 12 Water Inflow Path 13 Hot Water Supply Source 14 Hot Water Inflow Path 15 Mixing Room 16 Automatic Temperature Control Section 17 Mixed Water Flow Path 18a Water Bypass Flow Path 18b Hot Water Bypass Flow Path 19 Opening and Closing Flow Control Section 21 Set Temperature Adjustment Part 22 Wire 24 Valve operating spring 26 Slider 28 Safety spring 33 Temperature control handle 34 Moving body 39, 41 Temperature control valve seat 42 Temperature control valve body 42a, 42b Control valve 44 Thermosensor 48 Fixed valve body 49 Movable valve body 51, 52, 53 Inflow hole 54 Outflow portion 56 Lever handle

Claims (1)

[Scope of utility model registration request] 1. A thermostat disposed inside a mixed water passage for automatically controlling a mixing ratio of hot water and water, the position of the thermostat of an automatic temperature control section is remotely controlled to be changed. In the hot and cold water mixing tap, the moving body that moves back and forth with the rotation of the rotatable temperature control handle and the slider holding the end of the thermostat are connected by a wire, and the slider is connected to one side. A hot and cold water mixing valve characterized in that a tensile force is applied to the wire by a biasing safety spring.