CN1414272A - Fluid valve device - Google Patents

Abstract

A fluid valve device with a hydraulically controlled solenoid valve, comprising a channel housing (10) that divides an inflow channel (11) and an outflow channel (13), and a diaphragm valve that opens and closes a channel between the inflow channel (11) and the outflow channel (20), the connecting passage (16) connecting the front pressure chamber RH and the back pressure chamber RL of the diaphragm valve (20), the hydraulic control passage (14) connecting the back pressure chamber RL and the outflow passage (13), the opening and closing hydraulic control The hydraulically controlled solenoid valve (40) of the channel (14) and the plate-shaped valve cover (30) combined with the channel housing (10) dividing the back pressure chamber RL. The hydraulic control solenoid valve (40) is combined with the channel housing (10) at a place away from the valve cover (30), and the valve cover (30) is provided with a groove channel (33) for dividing part of the hydraulic control channel. In this way, the device can be suppressed from protruding upward from the back pressure chamber RL, and the device can be reduced in size and thickness.

Description

Fluid valve device

technical field

The present invention relates to a fluid valve for controlling fluid flow, in particular an electromagnetically driven hydraulic control solenoid valve and a diaphragm valve for opening and closing a fluid channel.

Background technique

Traditional fluid valves for water supply and drainage of water heaters and washing machines include JP-A-6-117570, Utility Model Registration No. 2519305, and the like. The fluid valve disclosed in these patents has a channel housing that divides the inflow channel and the outflow channel of water, a diaphragm valve that opens and closes the channel between the two channels, and an electromagnetic drive that controls the pressure in the back pressure chamber of the diaphragm valve to open and close the diaphragm valve. Hydraulic control solenoid valve, etc. These fluid valves can be installed, for example, in indoor underfloor or sidewall spaces, and where space is limited for equipment such as washing machines, to control water flow in piping.

However, in the conventional fluid valve, the pilot solenoid valve is provided above the back pressure chamber side of the diaphragm valve, so the extending directions of the inflow passage and the outflow passage protrude upward. Therefore, when the protruding fluid valve is connected to piping, even if the piping can be installed in a narrow space, a space necessary for installing the fluid valve is still required.

On the other hand, even if the hydraulic control solenoid valve is not installed above the back pressure chamber side of the diaphragm valve, the hydraulic control channel for communicating the hydraulic control solenoid valve and the back pressure chamber is still required, and even if a separate pipe or a channel constituting the channel is used Parts are used to divide the hydraulic control channel, and it cannot be controlled to protrude upward. Therefore, the structure of the liquid control channel is very important.

In addition, in the traditional fluid valve, the valve seat of the hydraulic control solenoid valve is on the channel housing, and the sealing between the hydraulic control valve and the valve seat can only be checked after the hydraulic control solenoid valve is installed on the channel housing, which is not suitable , the valve seat must be disassembled and reprocessed or the channel housing must be dropped. As a result, unnecessary assembly and disassembly work is caused, affecting work efficiency and production cost.

Contents of the invention

In view of the above-mentioned problems in the conventional technology, the purpose of the present invention is to reduce the number of parts, simplify the structure, make other parts modular, and provide a small, thin, low-cost, easy-to-inspect, high-efficiency fluid valve.

The fluid valve of the present invention has a channel casing that divides the inflow channel and the outflow channel of the fluid, the diaphragm valve that controls the opening and closing of the channel between the inflow channel and the outflow channel, and the connecting channel that communicates the front pressure chamber and the back pressure chamber of the diaphragm valve. 1. A hydraulic control channel for connecting the back pressure chamber of the diaphragm valve with the outflow channel and a hydraulic control solenoid valve for opening and closing the hydraulic control channel, which is characterized in that it is not only connected with the channel housing that divides the back pressure chamber, but also constitutes a hydraulic control channel. The flat-shaped valve cover of the groove channel of a part of the control channel, and the hydraulic control solenoid valve is connected with the channel housing at a place away from the flat-shaped valve cover.

With this structure, the hydraulic control solenoid valve can be installed far away from the flat valve cover, and a groove channel for part of the hydraulic control channel can be formed on the flat valve cover. To control the protrusion to the outside of the bonnet, ensure the passage of fluid. That is, not only the tube channel, but also the groove channel can be used to divide part of the hydraulic control channel to control the protrusion above the back pressure chamber, so as to achieve miniaturization and thinning of the device. This makes it possible to easily install the valve on piping installed in a narrow space.

In the structure, the hydraulic control channel is composed of a first hydraulic control channel extending parallel to the reciprocating direction of the diaphragm valve and a second hydraulic control channel extending perpendicular to the reciprocating direction of the diaphragm valve, and the hydraulic control solenoid valve is in the first The place where the hydraulic control channel is connected to the second hydraulic control channel is connected to the channel housing.

This structure simplifies the hydraulic control channel, which is convenient for processing, and the installation hole of the hydraulic control solenoid valve can also be processed while processing the hydraulic control channel. Moreover, the open end of the hydraulic control channel is closed by the electromagnetic valve, and no special plug is required, which reduces the manufacturing cost, simplifies the structure, and reduces the number of parts.

In the above structure, a structure may be employed in which the hydraulic control solenoid valve is mounted on a plane in which the reciprocating direction of the valve body is substantially the same as the extending direction of the inflow passage and the outflow passage.

The length direction of the hydraulic control solenoid valve of this structure is roughly on the same plane as the extending direction of the inflow channel and the outflow channel, which can further thin the device and can be installed in narrow spaces, such as water heaters and washing machines installed in narrow places. On pipes, on pipes in narrow parts such as water heaters and washing machines.

In said structure, the hydraulic control channel also serves as a part of the communication channel.

This structure can reduce the channels provided on the channel housing, simplify the structure, make the device miniaturized and reduce the processing cost.

In said structure, a plurality of diaphragm valves for channel opening and closing are arranged between the inflow channel and the outflow channel, and the plurality of diaphragm valves are driven by a hydraulic control solenoid valve connected with the channel housing.

This structure not only enables the miniaturization of the device and saves power, but also increases the flow rate of the fluid when the diaphragm valve is opened.

In addition, in the structure, two diaphragm valves are arranged symmetrically between the inflow channel and the outflow channel to control the opening and closing of the channel, and two valve covers are connected to the channel housing that divides the back pressure chamber of the two diaphragm valves. , There is a hydraulic control solenoid valve to open and close the two diaphragm valves.

In this structure, two diaphragm valves and two bonnets are arranged, symmetrically clamping the channel housing, and the hydraulic control solenoid valve is connected with the channel housing, which can increase the flow rate, save electricity, and further miniaturize the device.

In the above structure, the hydraulic control solenoid valve has a communication channel constituting a part of the hydraulic control channel and a valve seat for opening and closing the communication channel by switching the valve body.

With this structure, the hydraulic control solenoid valve can be used as a module, which can check the tightness of the valve body and the valve seat, eliminate invalid assembly and disassembly operations, and improve operation efficiency.

Description of drawings

Fig. 1 shows a cross-section of one embodiment of a fluid valve related to the present invention.

Fig. 2 is a cross-section of the working state of the hydraulic control solenoid valve in the fluid valve shown in Fig. 1 .

Fig. 3 shows the valve cover combined with the channel housing, (a) is a top view of its inner side, and (b) is a cross-sectional view of part A-A.

Fig. 4 shows the hydraulic control solenoid valve combined with the channel housing, (a) is a sectional view of the valve body on the valve seat, and (b) is a sectional view of the state where the valve body is away from the valve seat.

Fig. 5 is a side view of a fluid valve installed in a predetermined space.

Fig. 6 is a sectional view of another embodiment of the fluid valve of the present invention.

Fig. 7 is a cross-sectional view of another embodiment of the fluid valve of the present invention.

Fig. 8 is a sectional view of another embodiment of the fluid valve of the present invention.

Fig. 9 is a cross-sectional view of another embodiment of the fluid valve of the present invention.

Fig. 10 is a cross-sectional view of another embodiment of the fluid valve of the present invention.

In the figure, RH-front pressure chamber, RL-back pressure chamber, 10, 10', 110, 110', 210-channel housing, 11, 111, 111', 211-inflow channel, 13, 113, 113', 213-outflow channel, 14, 214-hydraulic control channel, 14a, 214a-the first liquid control channel, 14b, 214b-the second liquid control channel, 15, 215-flange part, 15a, 15a', 215a-embedded Hole, 16, 22a, 216-connecting channel, 20, 20'-diaphragm valve, 2-diaphragm, 21a-sealing part, 22, 22'-pressure plate, 22a-connecting channel, 30, 30'-bonnet, 33, 33'-groove channel, 40-hydraulic control solenoid valve, 42-valve body, 45-channel, 46-side wall hole, 47-valve seat.

Detailed ways

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

1 and 4 show an embodiment of the fluid valve of the present invention. This fluid valve has the channel housing 10 of the inflow channel and the outflow channel of dividing fluid (being water here), the diaphragm valve 20 installed in the channel housing 10, is connected with the channel housing 10 of division diaphragm valve 20 back pressure chambers The valve cover 30 and the hydraulic control solenoid valve 40 connected with the channel housing 10 .

As shown in FIG. 1 and FIG. 2 , the channel housing 10 is composed of an inflow channel 11 extending rearward in FIG. The outflow passage 13 of the back pressure chamber RL and the outflow passage 13 are connected with the hydraulic control passage 14 and the flange 15 for installing the hydraulic control solenoid valve 40 is formed. Flange portions 11 a , 13 a connected to pipes are formed at opening ends of the inflow passage 11 and the outflow passage 13 .

As shown in Figures 1 and 2, there is a flat valve cover 30 above the channel housing 10, which divides the diaphragm chamber DR around the cylindrical opening, and the diaphragm valve 20 reciprocates in the up and down direction V to make the cylindrical opening 12 Opening and closing. The diaphragm chamber DR is formed on the lower side of the diaphragm valve 20 and includes a front pressure chamber RH communicating with the inflow passage 11 and a back pressure chamber RL on the upper side.

As shown in Fig. 1 and Fig. 2, the channel housing 10 is formed with the first hydraulic control channel 14a extending parallel to the reciprocating direction V of the diaphragm valve 20 and communicating with the back pressure chamber RL, and in the reciprocating direction of the diaphragm valve 20 The vertical direction of V extends approximately parallel to the extending direction of the outflow channel 13 and communicates with the second hydraulic control channel 14b. The first hydraulic control channel 14a and the second hydraulic control channel 14b constitute the hydraulic control channel 14 that communicates with the back pressure chamber RL and the outflow channel 13 .

The channel housing 10 is formed with a communication channel 16 that communicates the front pressure chamber RH and the first pilot channel 14a. That is, the connecting channel 16 and the first hydraulic control channel 14a form the connecting channel that communicates the front pressure chamber RH and the back pressure chamber RL, because the first hydraulic control channel 14a doubles as a connecting channel, the channel structure can be simplified, and the device Miniaturization and cost reduction.

As shown in FIGS. 1 and 2 , the diaphragm valve 20 is composed of an elastically deformable diaphragm valve 21 and a pressure plate 22 . The pressure plate 22 is provided with a flow guide hole 22b for guiding a flow to a flow guide portion 31 described later.

The outer peripheral surface of the diaphragm valve 21 forms a seal 21a, which not only separates and seals the front pressure chamber RH and the back pressure chamber RL, but also has the function of sealing around the first hydraulic control channel 14a. Therefore, compared with the dedicated seal provided around the first hydraulic control channel 14a, the number of parts is reduced.

When the pressure from the back pressure chamber RL side is high as shown in Figure 1, the diaphragm valve 20 of the above structure moves downward, the cylindrical opening 12 is closed, and the communication between the inflow channel 11 and the outflow channel 13 is blocked; on the other hand, When the pressure from the front pressure chamber RH side is high as shown in FIG. 2 , the diaphragm valve 20 moves upward, and the cylindrical opening is opened to communicate the inflow channel 11 with the outflow channel 13 .

As shown in Fig. 3, the valve cover 30 is made of a flat plate, and the central part of the inner side forms a protruding flow guiding part 31. There is a concave part 32 in the flat plate that assists the work of the diaphragm valve 20 and divides the back pressure chamber RL and makes the back pressure chamber RL communicates with the first hydraulic control channel 14a and divides part of the communication channel 33 of the hydraulic control channel. In addition, a flange 34 connected to the channel housing 10 is formed at the outer peripheral portion.

The valve cover 30 is in the shape of a flat plate. In order to ensure the passage area of the back pressure chamber RL and the first hydraulic control channel 14a, the valve cover 30 is not made into a raised shape and used as a pipe channel, but the valve cover 30 is flat and closed. The groove channel 33 is formed, so it can be controlled to protrude to the outside of the valve cover 30, keep it flat, ensure the necessary channel area, and make the whole device miniaturized and thinned.

In the flange portion 15 of the channel housing 10, there is an insertion hole 15a for installing the hydraulic control solenoid valve 40. As shown in FIG. The embedding hole 15a is on the same axis as the second hydraulic control passage 14b, and also communicates with the first hydraulic control passage 14a. Therefore, the first hydraulic control channel 14b and the embedding hole 15a can be processed simultaneously by a stepped cutting tool, which simplifies the process. Furthermore, the connecting passage 16 extends in the same direction as the second hydraulic control passage 14b and the insertion hole 15a, which can simplify the preparation work for the replacement process.

The hydraulic control electromagnetic valve 40 is preferably arranged on the plane where the central axis of the outflow channel 13 is approximately the same as the central axis of the hydraulic control electromagnetic valve 40, corresponding to the embedded hole 15a, and its extension direction (the reciprocating direction of the valve body 42 described later) ) is substantially parallel to the extending direction of the outflow channel 13.

That is to say, the hydraulic control solenoid valve 40 is connected to the channel housing 10 at a place away from the valve cover 30 . This configuration can reduce the height of the device itself, making the whole smaller and thinner.

The hydraulic control solenoid valve 40, as shown in Figure 4, consists of a cylindrical part 41 forming a magnetic circuit, a valve body 42 that freely reciprocates in the cylindrical part 41, a spring 43 installed in the closing direction of the valve body 42, Exciting coil 44, be positioned at the passageway 45 that the front end of cylindrical part 41 extends to the reciprocating direction of valve body 42, make the inner space of cylindrical part 41 communicate with the outside at the side wall hole 46 of cylindrical part 41 and by valve The valve seat 47 of the front end portion 42a made of rubber such as the body 42 is formed.

The operation of the hydraulic control solenoid valve 40 is shown in (a) of FIG. The channel 45 is blocked from the inner space of the cylindrical part 41 and the side wall hole 46 .

On the other hand, when the coil 44 is energized, as shown in FIG. 4(b), the valve body 42 is counterbalanced by the generated electromagnetic force against the thrust of the spring 43, moves in the opposite direction, leaves the valve seat 47, and the passage 45 is opened. The channel 45 communicates with the inner space of the cylindrical part 41 and the side wall hole 46 .

In this way, in the hydraulic control solenoid valve 40 , the valve body 42 and the valve seat 47 are integrally formed. When checking the tightness of the valve body 42 and the valve seat 47 , it is only necessary to check the hydraulic control solenoid valve 40 alone. Therefore, when the tightness is not good, only the hydraulic control solenoid valve 40 needs to be changed. In this way, the material utilization rate of the channel housing 10 on the assembly side is improved, and the efficiency is improved as a whole.

Next, the operation of the fluid valve will be described with reference to FIGS. 1 and 2 . First, in the state where the hydraulic control solenoid valve 40 is not working (not energized), the valve body 42 of the hydraulic control solenoid valve 40 is on the valve seat 47 as shown in Figure 1, and the hydraulic control passage 14 (the first hydraulic control passage 14a and The second hydraulic control channel 14b) is in a closed state.

At this time, the pressure in the inflow passage 11 acts on the back pressure chamber RL through the front pressure chamber RH, the connecting passage 16 and the first hydraulic control passage 14a, and the pressures of the front pressure chamber RH and the back pressure chamber RL are the same, because the back pressure chamber The pressure receiving area of RL is large, and the diaphragm valve 20 is pushed down, close to the cylindrical opening 12, and the channel is in a closed state. The flow of water from the inflow channel 11 into the outflow channel 13 is blocked.

As shown in FIG. 2 , when the hydraulic control solenoid valve 40 is working (energized), the valve body 42 of the hydraulic control solenoid valve 40 leaves the valve seat 47 . The first hydraulic control channel 14a, the connecting channel 16, the side wall hole 46, the channel 45, and the second hydraulic control channel 14b are in communication, and the water in the back pressure chamber RL and the front pressure chamber RH flows into and out of the channel 13 through the hydraulic control channel 14. In this way, the pressure in the back pressure chamber RL drops, and the diaphragm valve 20 moves upward by the water pressure flowing into the passage 11, away from the cylindrical opening 12, and the passage opens. Water flows out from the inflow channel 11 toward the outflow channel 13 .

As shown in FIG. 5, the fluid valve is shorter and thinner than conventional products, and can be easily installed in a narrow area divided by the lower D and upper U of the height Tn compared with the height To space required by the previous products.

Fig. 6 is a fluid valve according to another embodiment of the partly modified embodiment shown in Fig. 1 and Fig. 4. Since the structure is the same, only the same symbols are marked and the description is omitted. In this fluid valve, as shown in FIG. 6 , the groove passage 33 ′ formed on the valve cover 30 ′ is a deeper rectangle, which widens near the opening of the first hydraulic control passage 14 a.

The action of this fluid valve is basically the same as that of the above-mentioned embodiment, and the responsiveness is good, especially because the passage area of the groove passage 33' increases and the passage resistance decreases, from the back pressure chamber RL to the first hydraulic control passage 14a or from the connecting passage 16 The water flowing into the back pressure chamber RL through the liquid control channel 14a is unobstructed. The hydraulic control solenoid valve 40 of the device is combined with the channel housing 110 at a place far away from the flat valve cover 30', and a part of the hydraulic control channel is formed by the groove channel 33' formed on the valve cover 30', so that the device as a whole can achieve a small size. Thinning and thinning.

Figure 7 shows another embodiment of the fluid valve of the present invention. Its structure is the same as that of the described embodiment, only the same symbols are attached and the description is omitted.

As shown in FIG. 7 , in the fluid valve, the channel casing 110 divides an inflow channel 11 extending in the horizontal direction L and an outflow channel 113 extending in the vertical direction V. That is to say, the diaphragm valve 20 ′ is responsible for opening and closing the cylindrical opening above the downwardly extending outflow channel 113 .

The second hydraulic control channel 14b and the fitting hole 15a extend in parallel to the extending direction L of the inflow channel 11 . Therefore, when the hydraulic control solenoid valve 40 is installed in the fitting hole 15a, the respective central axes are substantially on the same plane.

That is, the hydraulic control solenoid valve 40 is combined with the channel housing 110 at a place away from the flat valve cover 30', and a part of the hydraulic control channel is divided by the groove channel 33' on the valve cover 30', so that the overall device is miniaturized and thinned. .

In this fluid valve, when the hydraulic control solenoid valve 40 works, the hydraulic control channel 14 is opened, and the water in the back pressure chamber RL flows into and out of the channel 113 through the hydraulic control channel 14 . The pressure of the back pressure chamber RL drops, the diaphragm valve 20' moves upward, away from the cylindrical opening 113a, and the passage opens. Water flows from the inflow channel 11 to the outflow channel 113 .

On the other hand, when the hydraulic control solenoid valve 40 does not work, the hydraulic control channel 14 is closed, and water flows into the back pressure chamber RL from the inflow channel 11 through the front pressure chamber RH, the connecting channel 16 and the first hydraulic control channel 14a, and the inflow channel The pressure inside 11 and between the back pressure chamber RL is approximately the same, and the pressure area on the side of the back pressure chamber RL is large, the diaphragm valve 20' moves downward, the cylindrical opening 113a is closed, and the water stops flowing.

The fluid valve is limited by the space above the valve cover 30 ′, and is suitable for being installed in a place where the water drains downward, such as the drain pipes of water heaters and washing machines.

Fig. 8 is a partially modified embodiment of the fluid valve shown in Fig. 7, because the structure is the same, only the same symbols are marked and the description is omitted. In this fluid valve, as shown in FIG. 8, an inflow channel 111' extending in the vertical direction V and an outflow channel 113 extending in the horizontal direction L are divided by the channel housing 110'.

Diaphragm valve 20 ′ communicates with outflow channel 113 ′, and is responsible for opening and closing cylindrical opening 112 that opens upward. Moreover, the outer peripheral part of the inflow path 111' has the screw 111a' for connection, and the filter 111b is attached inside.

In this fluid valve, when the hydraulic control solenoid valve 40 works, the hydraulic control channel 14 is opened, and the water in the back pressure chamber RL flows into the outflow channel 113' through the hydraulic control channel 14. As the pressure in the back pressure chamber RL drops, the diaphragm valve 20' moves upward, away from the cylindrical opening 112, and the passage opens. Water then flows from the inflow channel 111' into the outflow channel 113'.

On the other hand, when the hydraulic control solenoid valve 40 does not work, the hydraulic control channel 14 is closed, and the water flows into the back pressure chamber RL through the inflow channel 111', the front pressure chamber RH, the connecting channel 16 and the first hydraulic control channel 14a, and flows into the channel The pressure in 111' and the back pressure chamber RL become the same, because the pressure area on the side of the back pressure chamber RL is large, so the diaphragm valve 20' moves downward, the cylindrical opening 112 is closed, and the water stops flowing.

This fluid valve is also the same as the above-mentioned situation. The place where the hydraulic control solenoid valve 40 is far away from the flat valve cover 30' is combined with the channel housing 110', and a part of the hydraulic control channel is divided by the groove channel 33' on the valve cover 30'. . Therefore, the entire device can be miniaturized and thinned. It is especially suitable for places where the space above the valve cover 30' is limited and the water is drained horizontally from below, such as the piping of water heaters and washing machines.

FIG. 9 is a liquid valve in which the installation direction of the hydraulic control solenoid valve 40 has been changed for the embodiment shown in FIG. 1 and FIG. In this fluid valve, as shown in FIG. 9, the embedded hole 15a' faces downward, and the installation of the hydraulic control solenoid valve 40 is parallel to the vertical direction V in the direction of its extension (the reciprocating direction of the valve body 42), that is, it is parallel to the first hydraulic control channel 14a. parallel. In addition, the channel housing 10 ′ is provided with a communication channel connecting the front pressure chamber RH and the first hydraulic control channel 14a, and the communication between the front pressure chamber RH and the back pressure chamber RL is only communicated by the communication channel 22a of the diaphragm valve 20 .

In this fluid valve, when the hydraulic control solenoid valve 40 works, the hydraulic control channel 14 is opened, and the water in the back pressure chamber RL flows in and out through the hydraulic control channel 14 (the first hydraulic control channel 14a and the second hydraulic control channel 14b). Channel 13.

Then, the pressure in the back pressure chamber RL drops, the diaphragm valve 20 moves upward, the cylindrical opening 12 opens, and water flows from the inflow channel 11 to the outflow channel 13 .

When the hydraulic control solenoid valve 40 does not work, the hydraulic control channel 14 is closed, and the water flowing into the channel 11 and the front pressure chamber RH flows into the back pressure chamber RL through the connecting channel 22a, and the pressure in the inflow channel 11 and the back pressure chamber RL becomes equal. Similarly, since the pressure-receiving area on the side of the back pressure chamber RL is large, the diaphragm valve 20 moves downward, the cylindrical opening 12 is closed, and the water stops flowing.

The fluid valve is the same as above, the hydraulic control solenoid valve 40 is combined with the channel housing 10 ′ away from the flat valve cover 30 , and a part of the hydraulic control channel is divided by the groove channel 33 on the valve cover 30 . Therefore, the whole device can be miniaturized and thinned. It is especially suitable for places where the upper space of the valve cover 30' is limited and there is some space below, for example, the horizontal installation pipes of water heaters and washing machines.

Figure 10 shows another embodiment of the fluid valve of the present invention. The fluid valve has a channel housing 210 dividing an inflow channel 211 and an outflow channel 213 of water, two diaphragm valves 20' installed in the channel housing 210, and a channel housing dividing the back pressure chamber RL of the two diaphragm valves 20. Two valve covers 30' connected with the body 210 and a hydraulic control solenoid valve 40 connected with the channel housing 210, etc.

As shown in FIG. 10 , in FIG. 10 , the channel housing 210 consists of an inflow channel 211 extending backwards, two cylindrical openings 212a, 212b that are located in the roughly central portion and open up and down, and from the cylindrical openings 212a, 212b to The outflow channel 213 extending in the horizontal direction L, the hydraulic control channel 214, the flange 215 for installing the hydraulic control solenoid valve 40, etc. are composed. The opening ends of the inflow path 211 and the outflow path 213 form flanges 211a, 213a for connecting pipes.

As shown in Figure 10, two flat valve covers 30' are connected to the upper and lower sides of the channel housing 210, and surround the cylindrical openings 212a, 212b, respectively dividing the diaphragm valve chamber DR, so that each diaphragm valve 20' is upward The reciprocating movement in the downward direction V opens and closes the cylindrical openings 212a, 212b. Furthermore, a common (one) front pressure chamber RH is formed on the inside and two back pressure chambers RL are formed on the outside across the diaphragm valve 20'.

In addition, as shown in FIG. 10 , two first hydraulic control passages 214 a extending approximately parallel to the reciprocating direction V of the diaphragm valve 20 ′ and respectively communicating with the back pressure chamber RL are formed on the passage housing 210 , and connected to the diaphragm valve 20 ′. The reciprocating motion direction V of 20' is perpendicular to the extension direction L of the outflow channel 213 and extends approximately parallel to the second liquid control channel 214b communicated with the outflow channel 213; it is formed by the first liquid control channel 14a and the second liquid control channel 14b. The hydraulic control channel 214 of the back pressure chamber RL and the outflow channel 213 .

In addition, the passage case 210 is formed with a communication passage 16 that communicates with the front pressure chamber RH and the first hydraulic control passage 214a on one side. The first hydraulic control passage 214a on the other side communicates with the first hydraulic control passage 214a on one side through the insertion hole 215a, so it also communicates with the connecting passage 216 . The hydraulic control solenoid valve 40 is embedded in the embedded hole 215a, and its extending direction is in the same direction as the extending direction L of the outflow channel 213 .

In this fluid valve, once the hydraulic control solenoid valve 40 works, the hydraulic control channel 214 is opened, and the water in the two back pressure chambers RL passes through the hydraulic control channel 214 (the two first hydraulic control channels 214a and the second hydraulic control channel 214b ) into and out of the channel 213. In this way, the pressure of the back pressure chamber RL drops, the two diaphragm valves 20 ′ move away from the cylindrical openings 212 a , 212 b respectively, the passages are opened, and water flows from the inflow passage 211 to the outflow passage 213 .

At this time, since the two cylindrical openings 212a, 212b are both open, the flow rate is larger than when one cylindrical opening is open.

On the other hand, when the hydraulic control solenoid valve 40 is not working, the hydraulic control channel 214 is closed, and the water flowing into the channel 211 and the front pressure chamber RH flows into the back pressure chamber RL respectively through the connecting channel 216 and the two first hydraulic control channels 214a, The pressures in the inflow channel 211 and the back pressure chamber RL become the same. Because the pressure receiving area on the side of the back pressure chamber RL is large, the diaphragm valve 20 moves, the cylindrical openings 212a, 212b are closed, and the water stops flowing.

Two diaphragm valves 20' and flat valve cover 30' are arranged symmetrically on the fluid valve, clamping the channel housing 210, and a hydraulic control solenoid valve 40 is connected to the channel housing at a place away from the flat valve cover 30'. The body 210 is connected, and a part of the hydraulic control channel is divided by the groove channel 33' formed on the valve cover 30', which can make the device smaller and thinner, save power and increase the flow rate. Therefore, as shown in FIG. 5, the fluid valve is suitable for places where the upper and lower spaces of the valve cover 30' are limited, and is especially suitable for pipes of water heaters and washing machines that require large flows.

Furthermore, as shown in Figure 10, the fluid valve can also communicate with the cylindrical openings 212a, 212b, and the outflow passage 213 becomes one, but the cylindrical openings 212a, 212b are not communicated, and two outflow passages and two places are set. The structure of the outlet.

In the above-mentioned embodiment, the installation position and direction of the hydraulic control solenoid valve 40 are roughly parallel to the extension direction of the inflow channel or the outflow channel on the channel housing, but it is not limited to this, and it can also be separated from the partition of the back pressure chamber of the diaphragm valve. The position of the valve cover 30, 30' is slightly inclined relative to the channel housing.

The fluid valve shown in Fig. 10 has adopted two diaphragm valves 20' and bonnet 30' as a plurality of diaphragm valves and bonnets, but it is not limited to this, and one hydraulic control solenoid valve 40 can also be used to drive more than 3 diaphragm valves. Diaphragm valve and bonnet structure.

Moreover, in the above-mentioned embodiments, it is shown that the fluid valve is suitable for being installed on the water pipes of water heaters and washing machines, but it is not limited to this, and it is also suitable for controlling fluid devices such as oil other than water, especially suitable for installation in places with limited space. It is also suitable for installation in places where the horizontal piping is limited and where the space is narrow such as the side wall.

In summary, the fluid valve of the present invention is provided with a plate-shaped valve cover for the back pressure chamber of the diaphragm valve that divides the opening and closing of the passage on the passage housing that divides the inflow passage and the outflow passage, and is arranged on the back pressure chamber of the diaphragm valve that is separated from the control diaphragm valve. In the place of the flat valve cover of the hydraulic control solenoid valve, since the groove channel dividing part of the hydraulic control channel is set on the flat valve cover, the control device can protrude above the back pressure chamber, so that the device can be miniaturized and thinned. Easy to install in tight spaces.

In addition, the hydraulic control channel is composed of a first hydraulic control channel extending approximately parallel to the reciprocating direction of the diaphragm valve and a second hydraulic control channel extending approximately perpendicular to the reciprocating direction of the diaphragm valve. The combination of the hydraulic control channel and the connecting part of the second hydraulic control channel simplifies the hydraulic control channel and makes the processing easier. When the hydraulic control channel is processed, the installation hole of the hydraulic control solenoid valve can also be processed. In this way, the manufacturing cost is reduced, the structure is simplified, and the number of parts is further reduced.

In addition, because the multi-diaphragm valve is driven by a hydraulic control solenoid valve, the device can be miniaturized, save electricity and increase the flow rate.

In the hydraulic control solenoid valve, the on-off of the valve body makes the valve seat connected to the opening and closing of the channel integrated, which can be managed as a module and separated from the channel housing, which is convenient for checking the tightness of the valve body and valve seat, and eliminates unnecessary assembly and disassembly ,Improve work efficiency.

Claims (7)

1. A kind of fluid valve device, has the passage housing of the inflow passage of dividing fluid and outflow passage, the diaphragm valve that plays passage opening and closing effect between described inflow passage and outflow passage, and makes the front pressure of described diaphragm valve chamber and the back pressure chamber communicated, the back pressure chamber of the diaphragm valve and the hydraulic control channel communicated with the outflow channel, and the hydraulic control solenoid valve for the opening and closing of the hydraulic control channel, it is characterized in that it also has a plate-shaped bonnet, which is combined with the channel casing that divides the back pressure chamber, and simultaneously forms a groove channel that divides a part of the hydraulic control channel, and the hydraulic control solenoid valve is separated from the bonnet at a place The channel housing is connected. 2. The fluid valve device according to claim 1, wherein the hydraulic control channel has a first hydraulic control channel extending parallel to the reciprocating direction of the diaphragm valve and a first hydraulic control channel extending in parallel with the reciprocating direction of the diaphragm valve. A vertically extending second hydraulic control channel, the hydraulic control solenoid valve is connected to the channel housing at the connecting portion of the first hydraulic control channel and the second hydraulic control channel. 3. The fluid valve device according to claim 1 or 2, wherein the hydraulic control solenoid valve is arranged on the same surface as the reciprocating movement direction of the valve body and the extension direction of the inflow channel and the outflow channel. 4. The fluid valve device according to any one of claims 1 to 3, wherein the hydraulic control channel also serves as a part of the connecting channel. 5. The fluid valve device according to any one of claims 1 to 4, characterized in that: a plurality of diaphragm valves for channel opening and closing are provided between the inflow channel and the outflow channel, and the plurality of diaphragm valves are closed by Driven by one of the hydraulically controlled solenoid valves connected to the channel housing. 6. The fluid valve device according to claim 5, characterized in that: two diaphragm valves for channel opening and closing are symmetrically arranged between the inflow passage and the outflow passage, and there are two diaphragm valves for dividing the two diaphragm valves. The two valve covers connected to the channel housing of the back pressure chamber also have one hydraulic control solenoid valve for opening and closing the diaphragm valve. 7. The fluid valve device according to claims 1 to 6, characterized in that: the hydraulic control solenoid valve has a connecting channel constituting a part of the hydraulic control channel and a connecting channel for making the valve body on and off. The valve seat for channel opening and closing.

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