JPS5937843Y2 - control valve - Google Patents

Description

[Detailed description of the invention] The present invention relates to a control valve that simultaneously controls the amount of hot water supplied to the kitchen, etc. and the flow rate of hot water to the radiator in a hot water heating equipment that also serves as a hot water supply equipment that supplies hot water to the kitchen, etc. be.

In general, hot water heating equipment that also serves as a hot water supply equipment uses the hot water from the heating equipment as a heat source to supply hot water to the kitchen, etc., and is immediately affected by changes in the temperature of the heating hot water due to the use of the hot water equipment, ensuring stable indoor heating conditions. The problem is that it is difficult.

The present invention attempts to solve the above-mentioned problems in this type of equipment by appropriately controlling the amount of hot water supplied to the kitchen etc. and the flow rate of hot water to the radiator of the heating equipment. The gist is the control valve as summarized below.

That is, the upper box is provided with a backflow prevention valve and a pressure control valve driven by a diaphragm and a spring, the child valve box is provided with a valve to which an opening direction driving force is applied by a spring, and the A valve box is connected to the valve box so that the valve and the pressure control valve have their valve stems facing each other on the same axis and operate in opposite directions of opening and closing, and further, the valve and the valve stem of the pressure control valve pass through. The control valve is provided with a see-through window at the joint portion of the upper and lower valve boxes.

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a longitudinal sectional view of a control valve that is an embodiment of the present invention, and FIG. 2 is a circuit diagram of a hot water heating facility that also serves as a hot water supply facility using this control valve.

First, the configuration of the control valve will be explained in detail based on FIG.

Connect the upper box 1 and the child valve box 2 to the plug 3 of the upper box 1.
The bonnet 4 is screwed in so that the piping directions can be arbitrarily set (different crossing angles), and the two are tightened and connected via washers.

A valve body 7 is arranged in the upper box 1 to be seated on a valve seat 6 in a valve chamber on the inflow port 5 side.

That is, as can be easily understood from the drawings, the valve body 7 moves in the vertical direction and is arranged so as to be seated on the valve seat 6 by upward movement, and the upper end of the upper valve stem 8 is connected to the outlet 9. The lower valve stem 11 is connected to a diaphragm 10 disposed above the side valve chamber, and is inserted through the plug 3 so as to be slidable in the vertical direction.

The diaphragm 10 is fixed to the upper part of the upper box 1, and a spring 13 is interposed between it and the upper diaphragm cover 12, and normally the valve body 7 is held in an open state (downward operating state). , when a predetermined pressure or more is applied to the valve chamber on the outlet 9 side, the valve body 7 is moved in the closing direction (upward).

Further, an O-ring seal 14 is installed between the lower valve stem 11 and the plug 3.

The other child valve box 2 has a valve seat 16 in the valve chamber on the outlet 15 side.
A valve body 17 is arranged to sit on the valve body 17 .

That is, the valve body 17 is arranged so as to be moved vertically and seated on the valve seat 16 by a downward motion contrary to the valve body 7, and the valve stem 18 is inserted and penetrated into the bonnet 4 so as to be slidable in the vertical direction. and its upper end is brought into contact with the lower end of the lower valve stem 11 of the valve body 7 on the same axis.

Further, a retaining ring 19 is fixed to the upper end of the valve stem 18, and the valve body 17 is disposed between the retaining ring 19 and the bonnet 4 in the opening direction (
A spring 20 is placed in the upper part.

Further, an O-ring seal 21 is provided between the valve stem 18 and the bonnet 4. Windows 22 and 23 are formed in the plug 3 and the bonnet 4 at corresponding positions, and the bonnet 4
A transparent cylinder 24 made of glass or heat-resistant transparent plastic is installed inside to serve as a viewing window for checking shaft leakage.

A backflow prevention valve 25 is disposed at the inlet 5 of the upper valve box 1.

In FIG. 1, 26 is a support member that slidably supports the valve stem of the check valve 25, and 27 is an inlet of the child valve box 2.

Next, an example of a circuit for a hot water heating facility that also serves as a hot water supply facility using the above control valve will be briefly described with reference to FIG.

In this drawing, 28 is a hot water boiler unit, 29 is an expansion tank, 30 is a hot water circulation pipe, 31 is a panel convector system header, 32 is a floor panel heater system header, 33 is a panel system circulation pipe, and 34 is a floor panel temperature control valve. , 35 is a check valve, 36 is a hot water supply heat exchange unit for supplying hot water to the kitchen, etc., 37 is an equal pressure control valve, 38 is a water supply valve, and A is the control valve explained with reference to FIG.

In this circuit example, hot water heated by the hot water boiler unit 28 is supplied to a panel convector and a floor panel heater to heat the room.

Further, a branch circuit is piped from this heating circuit to the hot water heat exchange unit 36, and a water supply and hot water supply circuit are connected to the hot water heat exchange unit 36, and the water that enters the hot water heat exchange unit 36 through the water supply circuit is It exchanges heat with the hot water in the circuit, and hot water is supplied to the kitchen etc. through the hot water supply circuit.

The control valve A is constructed by interposing the valve mechanism on the child valve box 2 side in the middle of the return pipe of the heating circuit in the above circuit, and interposing the valve mechanism on the upper valve box 1 side in the middle of the water supply circuit. , in order to relatively control the flow rates of both.

Next, the function and operation of control valve A in the above circuit will be explained in detail.

When hot water is not used in the kitchen, etc., the kitchen faucet is closed, and in the control valve A, a spring 13 placed behind the diaphragm 10 is used to control the water pressure applied to the diaphragm 10 and the opening operation of the valve body 17. In a state balanced with the combined force of the spring 20, the valve body 17 is brought into a predetermined open state, and as mentioned above, an appropriate amount of hot water heated by the hot water boiler unit 28 is delivered to the panel convector and floor panel heater. is supplied to heat the room to an appropriate temperature.

When using hot water in the kitchen, etc., when the water pressure in the water supply circuit increases, the diaphragm 10 moves upward against the spring 13, operating the valve body 7 in the closing direction, reducing the amount of water, and the spring Valve body 1 by 20
7 is allowed, the flow rate of the heating circuit can be increased, while the amount of hot water in the hot water supply circuit can be decreased, thereby preventing an adverse effect on the heating circuit caused by hot water supply.

In other words, by reducing the amount of water supplied, the amount of hot water heat exchanged in the hot water heat exchange unit 36 is reduced, preventing the temperature of hot water serving as a heat source from dropping below a predetermined temperature, and on the other hand, increasing the flow rate of hot water flowing through the heating circuit. This is because the temperature drop in the hot water can be covered by the increased hot water.

If the water pressure in the water supply circuit becomes low, the operation is reversed and the heating condition is maintained at a suitable level.

Thus, even though the heating circuit also serves as a hot water supply circuit for the kitchen, etc., by using the control valve A, a stable heating state can be maintained at all times.

In addition to the above-mentioned main effects, the control valve A also has the following advantages.

That is, since the upper valve box 1 and the child valve box 2 are connected by screwing the plug 3 and the bonnet 4 together, the piping angle can be set freely, and the plug 3 and the bonnet 4 can be connected to each other. Windows 22 and 23 respectively correspond to
Furthermore, since the transparent cylinder 24 is arranged inside the bonnet 4 to form a viewing window, shaft leakage through the lower valve stem 11 or the valve stem 18 can be easily inspected.

The feature of this circuit is that the water supply circuit and the heating circuit connected to the hot water boiler unit 28 are connected, and the hot water heat exchange unit 36 is arranged between the water supply circuit and the heating circuit, so that this champion is integrated. They operate in an organic manner.

In other words, in this circuit, the hot water boiler unit 28 and the hot water heat exchange unit 36 do not operate individually as in the conventional example, but they operate in conjunction, and the hot water generated in the hot water boiler unit 28 is transferred to the hot water boiler unit 36. Since the piping of the unit 28 and the hot water supply heat exchange unit 36 are shared, both domestic hot water supply and heating can be performed in combination.

Therefore, as can be understood from the description of the embodiments above, the present invention can sufficiently achieve the intended purpose and also has various additional effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of the control valve of the present invention, and FIG. 2 is a circuit diagram of a hot water heating facility that uses the control valve and is also used as a hot water supply facility. 1...Upper valve box, 2...Sub valve box, 3...
...Plug, 4...Bonnet, 5.27
......Inflow port, 6.16...Valve seat, 7.
17... Valve body, 8... Dobe valve stem, 9.
15... Outlet, 10... Diaphragm, 11... Lower valve stem, 12... Diaphragm cover 13.20... Spring, 1
4.21...O-ring seal, 18...
・Valve stem, 19... Retaining ring, 22.23...
...Window, 24...Transparent cylinder, 25...
Backflow prevention valve, 26...Support member, A...
Bikyo dialect.

Claims (1)

[Scope of utility model registration request] The upper box is provided with a backflow prevention valve and a pressure control valve driven by a diaphragm and a spring, the child valve box is provided with a valve to which an opening direction driving force is applied by a spring, and the upper box and the child valve box and the upper and lower valve boxes are connected such that the valve and the pressure control valve have their valve stems facing each other on the same axis and operate in opposite opening and closing directions, and further the upper and lower valve boxes are penetrated by the valve stems of the valve and the pressure control valve. A control valve characterized in that a see-through window is provided at the joint portion of the control valve.