JP2723202B2 - Hot water temperature control valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve for mixing hot and cold water for controlling the temperature of hot water supplied from a heat exchanger such as a boiler or a water heater. The present invention relates to a hot water temperature control valve configured to be able to simultaneously or selectively supply hot water and high-temperature water in which cold water is not mixed.

[0002]

2. Description of the Related Art In conventional boilers, water heaters and the like, the amount of gas supplied to a burner is adjusted to control the temperature of discharged hot water. The temperature of the cold water is increased by heat exchange with the high-temperature combustion gas generated by the burner and supplied. At this time, the temperature of the hot water was controlled by adjusting the gas supply amount using a gas amount adjustment valve provided in the gas supply pipe and burning the gas. However, when the pressure of the supplied cold water is lower or higher than a normal value, or when a large amount of hot water is used at one time, the temperature of the hot water is not constant, which is inconvenient to use.

In addition, cold water and hot water are simultaneously supplied to a hot water use location, and a cold water open / close valve and a hot water open / close valve are provided. These open / close valves are manually operated to adjust the hot water temperature. It is not easy to adjust to keep the appropriate hot water temperature at all times.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised to solve the above-mentioned conventional problems, and its object is to provide a relatively low-temperature medium-temperature water obtained by mixing hot and cold water,
An object of the present invention is to provide a hot water temperature control valve configured to be able to selectively supply hot water, in which cold water is not mixed, or any one of them.

It is another object of the present invention to provide a hot water temperature control valve which can control the temperatures of medium-temperature water and high-temperature water.

[0006]

A hot water temperature adjusting valve according to the present invention is a hot water supply cap having one end opened and the other end closed, and a hot water inlet for supplying hot water into the hot water supply cap. A hot water supply cap having a first hot water outlet for discharging hot water in the hot water supply cap, a first protrusion provided on the inner surface of the closed end, and having a sliding hole formed in the center; A chilled water supply cap that is open and the other end is closed, a chilled water inlet that supplies chilled water into the chilled water supply cap, and a sliding hole formed in the inner surface of the closed end and formed at the center. A cold water supply cap having a second projecting portion, and a cylindrical main body having both ends opened, wherein the one end of the hot water supply cap and the one end of the cold water supply cap are closely connected to both ends, respectively. , The hot water supply A cap and the cold water supply cap are arranged such that the first protrusion and the second protrusion face each other, and a second hot water outlet for discharging water inside the main body, and the inside of the main body. A main body having a damper arranged and movable in the axial direction by the action of a lever attached to the outside of the main body, an internal space of the main body, an internal space of a cold water supply cap, and an internal space of the main body and a hot water supply cap First and second discs each partitioning an internal space of the first and second through-holes, and a through-hole is formed in a central portion,
A small-diameter portion inserted into each of the sliding holes of the first and second protruding portions, a tapered portion inserted into each of the through-holes of the first and second discs, and a large-diameter portion disposed in the main body. And first and second stems, one end of which is slidably fitted to the large diameter portion of each of the first and second stems, and the other end of which is arranged to contact the damper.
A piston, a first stem and a first piston, and a fitting portion between the second stem and the second piston, which are respectively disposed at the fitting portions of the first stem and the first piston, and the second stem and the second piston; And a motor for driving the lever for moving the damper of the main body.

[0007]

When the pressure in the main body is equal to the pressure in the hot or cold water supply cap, or when the pressure in the main body is higher, the tapered portions of the first and second stems are fixed to the first and second discs. Close to the through hole. Therefore, water does not flow through the through hole.

When the pressure in the main body becomes lower than a certain level, the water pressure in the hot or cold water supply cap pushes the first and second stems toward the main body, and the water pressure in the caps penetrates the tapered surfaces of the tapered portions of the first and second stems. A gap is formed between the hole and the outer periphery.
Through this gap, the water in the hot or cold water supply cap flows into the main body. The hot water and the cold water are mixed in the main body to become medium-temperature water, and are discharged from the second hot water outlet.

By moving the damper, the pressure at which the tapered portions of the first and second stems are pressed against the through holes can be changed. When this pressure changes, the amount of hot water and cold water flowing into the main body also changes. When the inflow amount of the hot water and the cold water changes, the temperature of the medium-temperature water mixed and formed in the main body changes. Therefore, by moving the damper, the temperature of the medium-temperature water can be controlled.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a hot water temperature control valve according to an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 is a sectional view of a hot water temperature control valve 100 according to an embodiment of the present invention. Hot water temperature control valve 10
0 is a cold water supply cap 102 having a cold water inlet 123 to which cold water is supplied, a hot water supply cap 109 having a hot water inlet 120 to which hot water is supplied, and a first hot water outlet 121 to which hot water is discharged, Cold water supply cap 102
And a hot water supply cap 109, a second hot water outlet 122 is formed, and the main body 119 is provided with the lever 101 that operates when adjusting the cold / hot water mixing ratio. The cold water supply cap 102 and the hot water supply cap 109 have a mutually symmetrical form except for a hot water inlet 120 formed on the upper side of the hot water supply cap 109.

The internal space of the hot water supply cap 109 and the internal space of the main body 119, and the internal space of the cold water supply cap 102 and the internal space of the main body 119 are separated from each other by a first disk 110 and a second disk 103, respectively. A circular through hole 0 is formed in the center of each of the first and second disks 110 and 103. This through hole 0
Is opened and closed by first and second stems 112 and 116 formed by a small diameter portion, a tapered portion, and a large diameter portion. Body 1
A 0-ring 104 for preventing water from leaking is inserted in the contact surface between the cold water supply cap 19 and the cold water supply cap 102 and between the main body 119 and the hot water supply cap 109.

A second projection 115 having a sliding hole formed at the center is formed inside the cold water supply cap 102, and the small diameter portion of the second stem 116 is inserted into the second projection 115. As shown in FIG. 4, the second stem 116 has a small diameter portion that can be inserted into the sliding hole of the second projecting portion 115, a tapered portion that opens and closes the hole 0 of the second disk 103, and a storage groove formed inside. And a large diameter portion. The tapered portion of the second stem 116 is inserted into the hole 0 of the second disk 103 to open and close the hole 0. Further, a second piston 118 is inserted into the storage groove of the large diameter portion of the second stem 116.
A second spring 117 is inserted inside the piston 118. A repulsive force is applied to the second stem 116 and the second piston 118 by the second spring 117.

The hot water supply cap 109 has a hot water inlet 120 for supplying hot water heated by a heat exchanger (not shown) and a first hot water outlet 121 for discharging hot water. Is formed with a first protrusion 111 having the same function and structure as the second protrusion 115 of the cold water supply cap 102. The first stem 112, the first spring 113, and the first piston 114 inserted into the first protrusion 111 are also provided on the second stem 11 provided on the cold water supply cap.
6. The same structure and operation as the second spring 117 and the second piston 118 are performed.

Hot water and cold water are mixed in the main body 119.
A second hot water outlet 122 is formed at the center of the side surface of the main body 119, and a damper 108 whose side surface is in contact with the first and second pistons 114 and 118 is arranged at the center of the inside. The damper 108 includes the first and second stems 11.
2, 116 to regulate the movement. Damper 10
8 is configured to be able to move left and right by the lever 101 and the operating shaft S2 connected to the damper 108.

FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 shows a front view of the main body 119 shown in FIG. As shown in FIGS. 2 and 3, the lever 101 is driven stepwise in connection with the step motor 124 to control the flow rates of the cold water and the hot water flowing into the main body 119. The upper end of the damper 108 is connected to an operating shaft S2 extending downward from the lever 101. Above the damper 108, a main body 119 is provided.
A bellows 107 is disposed as a shielding means for preventing water from leaking from the inside. The lever 101 is rotatably attached to the main body 119 by a support shaft S1. The bellows 107 is attached to the main body 119 by a cover 105 (FIG. 1).

The step motor 124 is a motor that is operated stepwise according to a control signal. Step motor 1
When 24 rotates, the lever 101 and the operating shaft S2 rotate, and the damper 108 rotates by a certain angle. The lever 101 is rotatably fixed to the main body 119 by a support shaft S1.
Accordingly, as can be seen from FIGS. 2 and 3, when the step motor 124 is driven, the lever 101 and the operating shaft S2 are actuated.
Rotates about the support shaft S1 perpendicular to the paper surface of FIG. 3, and the damper 108 also rotates. The step motor 124 is normally controlled by a microcomputer (not shown). Body 119
Is formed with a second hot water outlet from which a mixed water of hot water and cold water flows out.

The operation and effect of the hot water temperature control valve 100 of the present invention configured as described above will be described with reference to FIG. The hot water temperature control valve according to the embodiment of the present invention can supply the high-temperature water supplied to the heat exchanger as it is, and can also supply the medium-temperature water obtained by mixing the high-temperature hot water with the cold water.

When the user uses high-temperature water, the high-temperature water introduced from the heat exchanger through the hot water inlet 120 is the first.
It flows out as it is through the hot water outlet 121. The temperature of the high-temperature water is adjusted by comparing the hot-water usage temperature set in the microcomputer with the measured hot-water temperature (detected by the temperature sensor installed on the flow path), and the gas is sent to the heat exchanger. It is adjusted by adjusting the amount of combustion gas.

The middle hot water is mixed in the main body 119 with the hot water flowing through the hot water inlet 120 of the hot water supply cap 109 and the cold water flowing through the cold water inlet 123 of the cold water supply cap 102, and is mixed through the second hot water outlet 122. Is leaked.

In order to use the medium hot water, the second hot water outlet 1
When the open / close valve 12 is opened, the water pressure inside the main body 119 is reduced by the hot water supply cap 109 and the cold water supply cap 1.
02, the hot water inside the hot water supply cap 109 and the cold water inside the cold water supply cap 102 push the first stem 112 and the second stem 108 toward the main body 119, respectively. It enters the inside of the main body 119 through the holes 0 of the first and second disks 110 and 103.

The hot water and the cold water are mixed inside the main body 119 and become a medium-temperature water having a lower temperature than the high-temperature water.
Outflow through 22. For the temperature control of the medium-temperature water, a microcomputer (not shown) compares a preset hot-water use temperature with the temperature of the discharged hot water (detected by a temperature sensor provided on the flow path), and compares the temperature with the step motor 124. Is appropriately operated to adjust the mixing ratio of hot water and cold water.

That is, if the outflowing hot water temperature is lower than the set hot water use temperature, the inflow of hot water is increased, and if the outflow hot water temperature is higher than the set hot water use temperature, the inflow of cold water is increased.

The microcomputer compares the set hot water usage temperature with the hot water temperature flowing out through the second hot water outlet 122 (detected by the temperature sensor provided on the flow path), and sets the hot water temperature. The step motor 124 is operated to rotate the damper 108 so as to reach the operating temperature.

For example, when the hot water temperature is lower than the set hot water use temperature, the damper 108
4, the lever 101 and the operating shaft S2 are rotated leftward as shown in FIG. In this case, the first piston 114 is moved to the damper 108 side by the first spring 113, while the second piston 118 is pushed leftward in the drawing from the damper 108 and enters the storage groove of the second stem 116.

In this state, the amount of hot water flowing into the main body 119 while pressing the first stem 112 is larger than the amount of cold water flowing into the main body 119 while pressing the second stem 116. Therefore, the second hot water outlet 11
The temperature of the hot water flowing out of 2 rises and approaches the set hot water use temperature. In this way, the cold water and the hot water are mixed so as to reach the set hot water use temperature, and the medium-temperature water flows out through the second hot water outlet 122.

As described above, the temperature of the medium hot water flowing out through the second hot water outlet 122 is controlled by the step motor 124 which operates according to the output signal of the microcomputer to rotate the lever 101, the operating shaft S2 and the damper 108 left or right. It is adjusted by doing.

Although the case where the stepper motor is used as the damper drive source has been described, another drive source such as a servomotor may be used. In addition, although the case where the cold water supply cap and the hot water supply cap have the same or symmetrical form has been described, both may have different sizes and the like.

In the above embodiment, the case where the first and second stems are inserted into the sliding holes of the first and second projecting portions, respectively, and the flow rate is adjusted by sliding the first and second stems will be described. However, other mechanisms may be used. For example, the through holes of the first and second disks may be opened and closed with a lid having one end rotatably supported.

The present invention has been described in connection with the preferred embodiments.
The present invention is not limited to these. For example, it will be apparent to those skilled in the art that various modifications, improvements, combinations, and the like can be made.

[0031]

As described above, the hot water temperature control valve of the present invention can supply high-temperature water and medium-temperature water simultaneously, or any one of them, and therefore requires high-temperature hot water such as a shower. High-temperature water can be separately supplied to a place, and medium-temperature water can be separately supplied to a place requiring low-temperature hot water such as a sink stand and a washing machine.

Further, the temperature of the discharged high-temperature water and medium-temperature water can be adjusted to a set hot water use temperature, which is extremely convenient in use.

[Brief description of the drawings]

FIG. 1 is a sectional view of a hot water temperature control valve according to the present invention.

FIG. 2 is a side sectional view of the hot water temperature control valve cut along the line AA of FIG. 1;

FIG. 3 is a front view of the main body showing a position of a step motor for driving a lever of FIG. 1;

FIG. 4 is an exploded perspective view of a stem, a spring, and a piston of FIG. 1;

FIG. 5 is a sectional view showing an operation state of the hot water temperature control valve of the present invention.

[Explanation of symbols]

 100 hot water temperature control valve 101 lever 102 cold water supply cap 103 second disk 104 0-ring 105 cover bellows 108 damper 109 hot water supply cap 110 1st disk 111 1st protrusion 112 1st stem 113 1st spring 114 1st piston 115 2nd protrusion 116 2nd stem 117 2nd spring 118 2nd piston 119 ・ ・ Main body 120 ・ ・ Hot water inlet 121 ・ ・ First hot water outlet 122 ・ ・ Second hot water outlet 123 ・ ・ Cold water inlet 124 ・ ・ Step motor S1 ・ ・ ・ Support shaft S2 ・ ・ ・Working axis

Claims (2)

(57) [Claims] 1. A hot water supply cap having one end opened and the other end closed, a hot water inlet for supplying hot water into the hot water supply cap, and a first hot water flow for discharging hot water from the hot water supply cap. A hot water supply cap having an outlet and a first protrusion provided on the inner surface of the closed end and having a sliding hole formed in the center, and a cold water supply cap having one end opened and the other end closed. A chilled water inlet for supplying chilled water into the chilled water supply cap, and a chilled water supply cap having a second protruding portion provided on the inner surface of the closed end and having a sliding hole formed in the center thereof; Is an open cylindrical main body, the one end of the hot water supply cap and the one end of the cold water supply cap are closely connected to both ends, respectively, the hot water supply cap and the cold water supply cap, The said A second hot water outlet for discharging water from the inside of the main body, and a lever disposed in the main body and attached to the outside of the main body, wherein the protruding portion and the second protruding portion are arranged so as to face each other. The main body having a damper movable in the axial direction by the action, and partitioning the internal space of the main body, the internal space of the cold water supply cap, and the internal space of the main body and the internal space of the hot water supply cap, respectively, and penetrating through the central portion. First and second disks each having a hole formed therein; a small diameter portion inserted into each of the sliding holes of the first and second protrusions; and a taper inserted into a through hole of each of the first and second disks. And first and second stems each having a large-diameter portion disposed in the main body; one end slidably fitted to the large-diameter portion of each of the first and second stems; I'll touch the damper A first and a second piston disposed in said first stem and first piston and is arranged in the fitting portion between the second stem and the second piston, the first
First and second biasing members for biasing the stem and the first piston, and the second stem and the second piston, respectively, in a separating direction;
A hot water temperature control valve comprising: an elastic member; and a motor that drives the lever that moves a damper of the main body. 2. A hot water supply cap having one end opened and the other end closed, a hot water inlet for supplying hot water into the hot water supply cap, and a first hot water flow for discharging hot water from the hot water supply cap. A hot water supply cap having an outlet; a cold water supply cap having one end opened and the other end closed, the cold water supply cap having a cold water inlet for supplying cold water into the cold water supply cap; a cylindrical body that is, the one end and the close the end of the cold water supply cap attached, before Symbol second hot water outlet for discharging water inside the body of each end portion and the hot water supply cap And a main body having a damper disposed in the main body and movable in an axial direction; an internal space of the main body, an internal space of a cold water supply cap, and an internal space of the main body and a hot water supply cap. Partition the internal space of the flop, respectively, the first and may the first and second disk central portion in the through hole is formed respectively, of said first and a through-hole of the second disk, respectively it opens closes A second valve , inside the body
The pressure on the space side is the internal space side of the cold water supply cap.
When the pressure is lower than the pressure and when the hot water supply cap
Open when the pressure is lower than the internal space pressure
First and second valves arranged in a direction , one end of the first and second valves is connected to the first and second valves, and the other end of the first and second valves is connected to the damper to bias the first and second valves in a closing direction. A hot water temperature control valve having first and second elastic members, and a motor for driving a damper of the main body.