JPH0620012Y2 - Electric three-way valve incorporating a constant water flow mechanism - Google Patents

Description

[Detailed Description of the Invention] In the present invention, in an air conditioner that uses cold and hot water, the required amount of cold and hot water is constantly circulated in the heat exchanger coil to develop the optimum temperature distribution in the room and to make the overall shape compact and compact. The present invention relates to an electric three-way valve that incorporates a constant water flow mechanism that makes installation and other work extremely simple and easy.

In general, an electric three-way valve B and a water amount adjusting mechanism D are attached to a part of the cold / hot water pipe C as a water flow change adjusting device of cold / hot water flowing in the heat exchanger coil A.

Therefore, by mounting various mechanisms such as the electric three-way valve B and the water amount adjusting mechanism D on a part of the pipe C, the whole shape becomes bulky as shown in the first illustration, and a large number of connecting members are installed. Needless to say, the number of steps required for mounting these was also complicated.

As a solution to such a drawback, the inventor first connected a bypass pipe to the water distribution side pipe and the drainage side pipe, and formed an H-shaped overall shape. No. 2 (Jun. 2-16183) was invented, but the main purpose of the present invention is to incorporate a constant water amount mechanism in the electric three-way valve to obtain a more reliable operation. .

That is, the specific structure of the present invention will be described in detail with reference to the drawings. The water inlet pipe (2) of the heat exchanger coil (1) is connected to the water distribution pipe (4).
Is connected via the socket (2), and the drainage pipe (6) is internally connected to the water outlet side pipe (5).
(7) is connected by an electrically operated valve (8), and the socket (3) and the electrically operated valve (8) are integrally connected and fixed by a bypass pipe (9) so that the overall shape is H-shaped. The electric three-way valve formed is characterized in that a constant water amount mechanism (10) is provided in the socket (3) on the water inlet side.

The on-off valve (7) is the water outlet of the bypass pipe (9).
(9) 'and the water outlet (5)' C of the water outlet side pipe (5). By the way, the bypass water outlet (9) 'is set to 9 when energized.
Closed at 0 °, cold and hot water distribution pipe (4), water inlet side pipe
Circulate straight through the heat exchanger coil (1) through (2),
When not energized, the on-off valve (7) operates 90 degrees and the water outlet (9) '
° Open circuit. Therefore, cold / hot water does not flow into the heat exchanger coil (1) when it is not used, and the energy is greatly saved.

The present invention is characterized in that a constant water amount mechanism (10) is integrally formed in a part of the above water amount adjusting mechanism, for example, in a part of the socket (3) on the water inlet side. As the constant water amount mechanism (10), a constant inclination angle a is provided at the tip of the pipe shaft core.
A shaft rod (a), an orifice (a) movable in the direction of the shaft rod (a) and an operating spring (c) thereof, and the shaft rod (a) is formed at the center of the orifice (a). ) The water passage hole (d) having the inclined surface b that matches the tip inclination angle a) is opened and the orifice (a) automatically resists the elastic force by the change of the water pressure flowing in the pipe. It works and the water volume is adjusted.

In the figure, reference numeral (e) is a stopper.

As described above, the present invention has the water inlet side pipe (2) and the water distribution pipe (4).
At the socket (3) the water outlet side pipe (5) and drain pipe (6)
Is connected via a motor-operated valve (8) and the motor-operated valve (8) and the socket (3) are connected by a bypass pipe (9).
The electric three-way valve formed in a mold has a constant water volume mechanism (10) built into an integral structure near the water inlet side of the heat exchanger coil (1) of the socket (3). Therefore, it is not necessary to install a constant flow rate mechanism on other parts as in the conventional case, and therefore it is very compact and bulky, and can be easily installed with one-touch together with the valve mechanism in any narrow space. Needless to say, the number of steps required for the mounting and the like can be greatly reduced, and the mounting member has a small number of fitting effects, and has various labor-related effects.

[Brief description of drawings]

FIG. 1 is an installation structure diagram of a conventional electric three-way valve, FIG. 2 is an installation state diagram of an electric three-way valve according to the present invention, and FIG. 3 is a sectional plan view of the same as above. Explanation of symbols (3) socket, (4) water distribution pipe, (6) water distribution pipe, (8) motor operated valve, (9) bypass pipe, (10) constant water volume mechanism

Claims (1)

[Scope of utility model registration request] 1. A water distribution pipe (4) is connected to a water inlet pipe (2) of a heat exchange coil (1) through a socket (3), and a drain pipe (6) is connected to a water outlet pipe (5). ) Is connected by a motor-operated valve (8) equipped with a water flow direction switching valve (7), and the socket (3) and motor-operated valve (8) are integrally connected and fixed by a bypass pipe (9). However, in the electric three-way valve in which the overall shape is formed into an H shape, the socket (3) on the water inlet side
An electric three-way valve with a built-in constant water flow mechanism characterized by having a constant water flow mechanism (10) inside.