RU2485379C1 - Three-way valve for connection of water heating appliance - Google Patents

Abstract

FIELD: machine building.SUBSTANCE: three-way valve includes body 1 with inlet 2, outlet 3, discharge and valve 5 branch pipes and controlled valve block 6 with sleeve 7, stock 8 and valve plate 9. Inlet 2 and outlet 3 branch pipes of housing 1 are located on one and the same axis and separated with solid partition wall 10. Discharge branch pipe is located at a right angle to branch pipes 2, 3 and interconnected with cavity 11 of inlet branch pipe 2. Valve branch pipe 5 is located perpendicular to the plane of axes of inlet 2, outlet 3 and discharge branch pipes. Its cavity 12 is interconnected through hole 13 with cavity 11 of inlet branch pipe 2, and through channel 14 with cavity 15 of outlet branch pipe 3. On surface 16 of inlet branch pipe 2 inside cavity 12 of valve branch pipe 5 there is valve seat 17 for fitting of valve plate 9. Stock 8 of valve block 6 is installed in sleeve 7 with possibility of back-and-forth movement with projection of its end 18 on one side of sleeve 7 and with projection of end 19 on the other side. Valve plate 9 is fixed on end 19. Stock 8 is spring-loaded in sleeve 7 in the direction of displacement of end 18 from sleeve 7. Sleeve 7 is rigidly fixed in valve branch pipe 5 with possibility of contact of valve plate 9 with valve seat 17 at movement of stock 8 inside body 1 and provided with section 20 of external thread located on the outside to fix an element controlled by the valve. Minimum cross sectional area of channel 14, as well as cross sectional area of hole 21 is less than cross sectional area of hole 13 attaching cavity 11 of inlet branch pipe 2 to cavity 12 of valve branch pipe 5.EFFECT: enlarging the number of devices for smooth adjustment of a heating degree of a heating appliance, and improving reliability.6 cl, 5 dwg

Description

The invention relates to construction, and specifically to a three-way valve for connecting water heating devices of various designs (convectors, radiators) used in one-pipe water heating systems of buildings, which relates to means for controlling the degree of heating of a heating device, thermostats and provides the possibility of both manual regulation and regulation in automatic mode.

It is known to use a three-way tap to control the flow of water in a heating device. The three-way valve includes a housing with three nozzles communicating with its central cavity, in which there is a shutter that can be moved manually by rotation, which ensures the overlap of two nozzles, one of which is connected to the input to the heating device with a one-pipe interfloor heating system, and the second to the bypass section (bypass), which in turn is connected via a tee to the main pipe (riser) to drain the water and to the outlet of the heating device. In this case, the third branch pipe of the three-way valve is connected to the main pipe from which the water coolant is supplied (Skanavi A.N., Makhov L.M., Heating, Moscow, ASV Publishing House, 2008, p. 146, Fig. 5.15).

In this well-known solution, three degrees of regulation are carried out: the heating device is turned on at maximum power (when the bypass section is completely closed and the entire coolant passes through the heating device); switched on at medium power (when the bypass section and the heater entrance are fully open); off (when the bypass section is open, and the entrance to the heater is closed and the entire heat transfer medium goes to the bypass section). The well-known three-way valve does not provide smooth regulation of the degree of heating of the heater.

To ensure smooth regulation of the degree of heating of the heating device, thermal valves are used (Scanavi A.N., Makhov L.M., Heating, Moscow, ASV Publishing House, 2008, p. 147, Fig. 5.16).

A three-way thermal valve is known, including a housing with three nozzles communicating with its central cavity, in which a spool with a stem protruding outward from the housing is used to move the spool through the cavity (Vesta Trading Technical Catalog, 2009, p. 284) .

The first and second nozzles are located opposite each other and communicate with the cavity of the housing through openings in the partitions separating the cavity of the nozzles from the central cavity of the housing, where the spool is located. The third nozzle is located orthogonally to them along the axis of the spool shaft housing protruding from the opposite side of it. The spool is in the form of a glass with holes in the walls, and when moving it, it can completely or partially overlap the holes in the cavities of the first and second nozzles, thus ensuring the elimination of liquid coolant entering the central cavity of the housing through one of the nozzles, or by changing the amount of incoming coolant from this pipe, or by changing the amount of coolant outgoing from the central cavity of the housing, due to which the amount of coolant leaving the third nozzle changes. The first pipe is connected to the coolant supply pipe (floor riser), and the second to the heater input. The third pipe is connected to a bypass section connected to the output of the heater and to the heat transfer pipe (continuation of the riser).

To regulate the degree of heating of the heating device, a cap is used manually, which is fixed by thread with the possibility of contacting the bottom with the end of the stem, and when screwing the cap in or out, it moves the spool.

To automatically control the degree of heating of the heater, the valve controls are used, which are made in the form of thermostatic heads of known designs (Vesta Trading Technical Catalog, 2009, pp. 341-351), which are axial drives for moving the spool. The thermostatic head is fixed with the possibility of interaction with the rod to move the spool, providing automatic control of the degree of heating of the heater. Thermostatic heads of various functions, axial drives of other designs, including those connected to an external controller, can be used, which also makes it possible to control the degree of heating of the heating device or the degree of heating of several heating devices.

The known three-way thermal valve in the manufacture requires fitting the outer cylindrical surface of the spool and the cylindrical surface of the Central cavity of the housing, which is paired with the outer cylindrical surface of the spool. This makes the design of the three-way thermo valve complicated; the reliability of the three-way thermo valve during long-term operation is reduced due to deposits in the body cavity preventing the spool from moving, so much so that the drive force of the valve control element may not be enough to move the spool. In addition, the body of the well-known three-way thermo-clan cannot be made of steel with smooth nozzles for the purpose of connecting to connected pipes by welding, since the body heats up during welding, it can be deformed, which leads to failure of the thermal valve, since deformation leads to jamming of the spool .

A more reliable design is the thermostatic valve, which includes a housing with inlet and outlet nozzles, a valve nozzle in which a spring-loaded stem is mounted, at the end of which a valve disc is mounted, which, when moving the rod, is able to mate with a seat on the partition between the cavities of the inlet and outlet nozzles communicating through the hole in the center of the indicated saddle. The second end of the stem is brought out and, similarly to the one described above, can interact with the regulating cap or with a thermal head to control the position of the valve stem and, accordingly, the valve capacity, providing adjustment of the degree of heating of the heater. Such two-way thermostatic valves can be straight when the inlet and outlet pipes are on the same axis, or angular when the axis of the inlet and outlet pipes intersect at right angles (Vesta Trading Technical Catalog, 2009, pp. 323-340) .

This well-known valve allows for smooth adjustment of the degree of heating of the heater and its throttling - the locking section between the valve plate and the seat allows a certain alignment deviation between the seat and the valve plate due to the fact that the valve plate has some fixing mobility on the stem, as well as an elastic element. The case of such a valve when it is made of steel can be connected to steel pipes by welding, while ensuring a minimum variation in the adjustment parameters between the products in the same series, which allows them to perform the same configuration operations when putting the heating system into operation.

At the same time, when using such a valve when connecting a heater in a single-pipe heating system, it is necessary to use additional tees to form a bypass section, which complicates the installation process and expands the range of used connecting parts, in contrast to the situation of using a three-way valve. Similarly, if a well-known two-way valve is built into the device, it is necessary to form a bypass section either by installing a tee, or otherwise perform an orthogonal outlet from the pipe, which in any case is not simple and does not allow the use of special equipment for welding along the contact line of two pipes connected by the ends. Reliability of regulation is ensured not only by the design of the locking section, but also by the selection of the area of the baked section of the hole in the saddle, which is correlated with smaller cross-sectional areas of the underwater and outlet pipes connected respectively to the inlet and outlet pipes.

The technical result consists in expanding the arsenal of means for smoothly adjusting the degree of heating of the heating device, allowing it to be connected to a single-pipe heating system with the formation of a bypass section and distinguished by reliability both during operation and at the commissioning stage, while ensuring accuracy of adjustment with a minimum variation in adjustment parameters between products of the same series.

This technical result is achieved by a three-way valve for connecting a water heating device, which contains a housing with inlet, outlet, outlet and valve nozzles, as well as a controlled valve block with a sleeve, stem and valve disc.

The inlet and outlet nozzles of the housing are located on the same axis and are separated by a solid partition, and the outlet nozzle is located by the axis at right angles to the axis of the inlet and outlet nozzles and communicates with the cavity of the inlet nozzle.

The valve pipe is located with the axis perpendicular to the plane of the axes of the inlet, outlet and outlet pipes, and its cavity communicates through an opening located along the axis of this cavity with the cavity of the inlet pipe, and also through the channel with the cavity of the output pipe.

On the surface of the inlet pipe inside the cavity of the valve pipe around the hole in the cavity of the inlet pipe made valve seat for landing valve plate.

The stem of the controlled valve block is mounted in its sleeve with the possibility of reciprocating movement with the protrusion of one end on one side of the sleeve and with the protrusion of the second end on the other side, on which the valve plate is fixed, and the rod is spring-loaded in the sleeve in the direction of pushing the first end out of the sleeve.

The sleeve of the controlled valve block is rigidly fixed in the valve pipe of the housing with the possibility of contact of the valve plate with the valve seat when moving the rod inside the housing and is made with an external thread section for securing the valve control element, while the minimum channel cross-sectional area, as well as the cross-sectional area the hole connecting the outlet pipe with the cavity of the inlet pipe is less than the cross-sectional area of the hole connecting the cavity of the inlet cutting of a cavity of the valve sleeve.

The difference between a three-way valve for connecting a water heating device, made in accordance with the present invention, from a known three-way valve, is to make the body and elements of the controlled valve block.

The case in the particular case of the invention for connecting the inlet, outlet and outlet pipes by welding can be made of steel. In this case, the outer and inner surfaces of the inlet, outlet, and branch pipes are smooth.

The housing in the particular case of execution can be equipped with an additional outlet pipe, which is located at an axis at right angles to the axis of the inlet and outlet pipes from the side of the housing opposite from the main outlet pipe and also communicates with the cavity of the inlet pipe and is plugged with a plug, while the minimum cross-sectional area of the outlet channel, as well as the cross-sectional area of the hole connecting the outlet pipe to the cavity of the inlet pipe, and the cross-sectional area of the hole connecting the additional A separate outlet pipe with a cavity of the inlet pipe is smaller than the cross-sectional area of the hole connecting the cavity of the inlet pipe with the cavity of the valve pipe.

As in the specified general case, and in the aforementioned special cases of the invention, the valve control element can be made in the form of a cap fixed with the bottom contact with the first end of the rod, or in the form of a thermostatic head fixed with the possibility of interaction with the first end of the rod of its pressure element driven by a solid or liquid sensing element.

The valve plate may be made with an annular groove in which an annular sealing element is mounted for interfacing with the valve seat.

The possibility of implementing a technical solution is confirmed by a specific example of a three-way valve for connecting a water heating device, a longitudinal section of which is presented in figure 1. Figure 2 shows a cross section of the valve plane along the axis of the valve pipe. Figure 3 and figure 4 shows the connection diagrams of water heating devices to a single pipe water supply system, in the designs of which, as a unit, a three-way valve for connecting a water heating device made in accordance with the present invention is installed. Accordingly, figure 3 shows a variant of the right connection, and figure 4 is a variant of the left connection. Figure 5 shows a diagram of the left connection of a water heating device to a single pipe water supply system using a independently installed three-way valve fittings made in accordance with the present invention as a separate part for connecting a water heating device.

The three-way valve for connecting a water heating device contains (Fig. 1) a housing 1 with an inlet 2, outlet 3, outlet 4 (Fig. 2) and valve 5 nozzles, as well as a controlled valve block 6 with a sleeve 7, a stem 8 and a valve disc 9 .

The input 2 and output 3 pipes of the housing 1 are located on the same axis and are separated by a solid partition 10.

The branch pipe 4 is located by the axis at right angles to the axis of the input 2 and output 3 pipes and communicates with the cavity 11 of the input pipe 2,

The valve pipe 5 is located with the axis perpendicular to the plane of the axes of the inlet 2, outlet 3 and outlet 4 nozzles, and its cavity 12 communicates through an opening 13 located on the axis of this cavity 12 with a cavity 11 of the inlet pipe 2, and also through the channel 14 with a cavity 15 of the outlet pipe 3 .

On the surface 16 of the inlet pipe 2 inside the cavity 12 of the valve pipe 5 around the hole 13 in the cavity of the inlet pipe 11, a valve seat 17 is made for seating the valve plate 9.

The stem 8 of the controlled valve block 6 is mounted in its sleeve 7 with the possibility of reciprocating movement with the protrusion of one (first) end 18 on one side of the sleeve 7 and with the protrusion of the second end 19 on the other side, on which the valve plate 9 is fixed, and the rod 8 spring-loaded in the sleeve 7 in the direction of pushing the first end 18 from the sleeve 7.

In this case, the sleeve 7 of the controlled valve block 6 is rigidly fixed in the valve pipe 5 of the housing 1 with the possibility of contact of the valve plate 9 with the valve seat 17 when moving the rod 8 into the housing 1 and is made with an external thread section 20 for fixing the valve control element (in the drawings not shown).

For effective operation of the three-way valve for connecting a water heating device, the minimum cross-sectional area of the channel 14, as well as the cross-sectional area of the hole 21, connecting the outlet pipe 4 with the cavity 11 of the inlet pipe 2, is less than the cross-sectional area of the hole 13, connecting the cavity 11 of the inlet pipe 2 s cavity 12 of the valve pipe 5. In the particular case corresponding to the presented embodiment, the minimum cross-sectional area of the channel 14, as well as the cross-sectional area of Verstov 21 connecting the discharge nozzle 4 inlet cavity 11 2 are equal to each other.

The three-way valve design for connecting a water heating device in the presented example is unified for left and right connections (Fig. 3, Fig. 4 - explanations are given below). For this, the housing 1 is equipped with an additional outlet pipe 22 (Fig. 2), which is located at an axis at right angles to the axis of the input 2 and output 3 pipes from the opposite side of the housing 1 from the main outlet pipe 4 and also communicates with the cavity 11 of the input pipe 2 and is plugged plug 23. Here, the condition is also satisfied that the minimum cross-sectional area of the outlet channel 14, as well as the cross-sectional area of the hole 21, connecting the outlet pipe 4 with the cavity 11 of the inlet pipe 2, and the cross-sectional area of the hole I 24, connecting the additional outlet pipe 22 with the cavity 11 of the inlet pipe 2, is smaller than the cross-sectional area of the hole 13, connecting the cavity 11 of the inlet pipe 2 with the cavity 12 of the valve pipe 5. The condition for the equality of the cross sections mentioned above is also fulfilled here.

The sleeve 7 is made with a stepped hole 25 (figure 2), open on one side of the portion 26 of a smaller diameter, which is closed by a plug 27 with a hole 28 on the other side.

The rod 8 from the side of the second end 19, on which the valve disc 9 is fixed, is made with a thickened portion 29, which is mated with a side surface with the surface of the portion 26 of the smaller diameter of the step hole 25 of the sleeve 7, on which a shoulder 30 is made from the side of the first end 18 of the rod 8, and the rod 8 further continues with a thin section 31 passing through the hole 28 in the plug 27 and forming the first end 18 of the rod 8.

Around the thickened section 29 of the rod 8, a compression spring 32 is installed, contacting one end with a shoulder 30, and the second with a step 33 of the stepped hole 25 of the sleeve 7. The compression spring 32 provides the above-mentioned pushing of the first end 18 from the sleeve 7 through the hole 28 in the tube 27.

The stem 8 is sealed with a thickened portion 29 relative to the portion 29 of the smaller diameter of the step hole 25 in the sleeve 7, and the plug 27 is sealed relative to the sleeve 7 and fixed therein by a thread 34. The valve plate 9 is made with an annular groove 35 in which an annular sealing element 36 is fixed for pairing with the valve seat 17. The sleeve 7 is fixed in the valve pipe 5 by means of a thread 37 and sealed relative to it.

The three-way valve design for connecting a water heating device in the presented example is intended to be installed directly in the design of a water heating device, as shown in the diagrams in figure 3 and figure 4. To this end, the housing 1 is made of steel, and the outer 38 (figure 1) and inner 39 surfaces of the inlet 2, outlet 3 and outlet 4 nozzles are made smooth. This allows you to connect them to the steel pipes of the water heating device by gas welding or electric welding. In this case, the inner diameter of the inlet pipe 2 may be equal to 20 mm, and the inner diameters of the outlet 3 and outlet pipe - 15 mm. The minimum diameter of the channel 14, the diameter of the hole 21 connecting the outlet pipe 4 with the cavity 11 of the inlet pipe 2, may be 10 mm, and the diameter of the hole 13 connecting the cavity 11 of the inlet pipe 2 with the cavity 12 of the valve pipe 5 may be 16 mm. This is a special case that can be used for most heating systems in buildings, but other sizes are possible, which are determined by the parameters of specific heating systems and are easily calculated by a specialist in heating and ventilation systems.

To connect to a one-pipe water supply system using a independently installed three-way valve made in accordance with the present invention as a separate part of a pipe fitting for connecting a water heating device (this option is not shown in the drawings; the connection diagram is shown in Fig. 5), input, output and branch pipes can be made each on the sections adjacent to their free ends, inside - with sections of internal thread for threaded connection and outside - from the element and to capture a wrench.

The example embodiment of the invention is not exhaustive. Other embodiments of the invention corresponding to the scope of patent claims are possible, characterized by a simple design that allows the use of water heating in the design of the device and as an independent element of pipe fittings, which are easily mounted. All parts of a three-way valve for connecting a water heating device made in accordance with the present invention are manufactured using known technologies from materials traditionally used for such products. The valve body 1 of a three-way valve for connecting a water heating device can be made of steel in the form of a welded part.

To ensure regulation, valve control elements of known structures (not shown in the drawings) can be used. The valve control element can be made in the form of a cap fixed with the possibility of bottom contact with the first end 18 of the rod 8, the design of which is known (Vesta Trading Technical Catalog, 2009, p.337, drawing, item 4).

The valve control element can be made in the form of a thermostatic head of a known design, fixed with the possibility of interaction with the first end 18 of the rod 8 of its pressure element controlled by a solid or liquid sensing element (Vesta Trading Technical Catalog, 2009, p. 341- 351).

Said valve control elements of known structures can be used in all embodiments of the present invention.

The control is carried out by pressing the first end 18 of the rod 8, which leads to the approach of the valve plate 9 to the valve seat 17, which reduces the flow of water coolant from the inlet pipe 2 through the hole 13 into the cavity 12 of the valve pipe 5 and then through the channel 14 into the cavity of the outlet pipe 3, from where the water coolant then enters the water heating device. Water coolant that does not pass into the outlet pipe 3, through the hole 21 is sent to the outlet pipe 5.

The degree of said pressing on the first end 18 of the rod 8 is changed by a thermostatic head that responds to ambient temperature. With a decrease in ambient temperature, the volume of water coolant entering the water heating device (radiator, convector) increases. Instead of thermostatic heads, various well-known actuators (servo drives) can be used, acting on the control signals of controllers or room wall thermostats. A three-way valve for connecting a water heating device together with a thermostatic head or a servo drive form a “temperature controller”.

With the right connection (Fig. 3) of the three-way valve 40 to the water heating device 41, the inlet pipe 2 is connected to the pipe 42 (the floor riser), from which the water coolant flows, and the outlet pipe 3 to the input 43 of the water heating device 41. The outlet pipe 5 through a tee 44 is connected to the output 45 of the device 41 for water heating and to the pipe 46, through which the water coolant is discharged (continuation of the riser).

In the case of the left connection (Fig. 4), it is no longer used for connecting to the outlet 47 (bypass) of the main outlet pipe 4, but an additional outlet pipe 22 (Figure 2), while the main outlet pipe 4 is jammed by the plug 23.

In the case when the three-way valve is made as an independent element of the pipe fittings and is not included in the design of the water heating device, it is connected, as shown in the diagram in Fig. 5 (upper left connection).

The inlet pipe 2 is connected to the pipe 48, from which the coolant flows, and the outlet pipe 3 - to the input 49 of the water heating device 50. The branch pipe 5 is connected to the pipe 51 of the branch section (bypass), which is connected through the tee 52 to the output 53 of the water heating device 50 and to the pipe 54 for discharging the water coolant.

When implementing a three-way valve for connecting a water heating device made in accordance with the invention, a means of smooth adjustment with high accuracy of the degree of heating of the heating device, easily connected to a single-pipe heating system with the formation of a bypass section, which distinguishes reliability during setup and operation, is obtained.

Claims (6)

1. A three-way valve for connecting a water heating device, comprising
housing with inlet, outlet, outlet and valve nozzles,
as well as a controllable valve block with a sleeve, a stem and a valve disc,
the inlet and outlet nozzles of the housing are located on the same axis and are separated by a solid partition,
the outlet pipe is located by the axis at right angles to the axis of the inlet and outlet pipes and communicates with the cavity of the inlet pipe,
the valve branch pipe is located with an axis perpendicular to the plane of the axes of the inlet, outlet and outlet pipes, and its cavity communicates through an opening located along the axis of this cavity with the cavity of the inlet pipe, and also through the channel with the cavity of the output pipe,
moreover, on the surface of the inlet pipe inside the cavity of the valve pipe around the hole in the cavity of the inlet pipe made valve seat for landing valve plate,
the stem of the controlled valve block is mounted in its sleeve with the possibility of reciprocating movement with the protrusion of one end on one side of the sleeve and with the protrusion of the second end on the other side, on which the valve plate is fixed, the rod being spring-loaded in the sleeve in the direction of pushing the first end out of the sleeve,
wherein the sleeve of the controlled valve block is rigidly fixed in the valve pipe of the housing with the possibility of contact of the valve plate with the valve seat when moving the rod inside the housing and is made with an external thread section for securing the valve control element,
and the minimum cross-sectional area of the channel, as well as the cross-sectional area of the hole connecting the outlet pipe to the cavity of the inlet pipe, is less than the cross-sectional area of the hole connecting the cavity of the inlet pipe to the cavity of the valve pipe. 2. The valve according to claim 1, characterized in that the casing is made of steel, and the outer and inner surfaces of the inlet, outlet and outlet pipes are made smooth. 3. The valve according to claim 1 or 2, characterized in that the housing is equipped with an additional outlet pipe, which is located at an axis at a right angle to the axis of the inlet and outlet pipes from the side of the housing opposite from the main outlet pipe and also communicates with the cavity of the inlet pipe and is plugged with a plug wherein the minimum cross-sectional area of the outlet channel, as well as the cross-sectional area of the hole connecting the outlet pipe to the cavity of the inlet pipe, and the cross-sectional area of the hole connecting the additional the body outlet pipe with the cavity of the inlet pipe is smaller than the cross-sectional area of the hole connecting the cavity of the inlet pipe with the cavity of the valve pipe. 4. The valve according to claim 1 or 2, characterized in that the valve control element is made in the form of a cap fixed with the possibility of bottom contact with the first end of the rod, or in the form of a thermostatic head fixed with the possibility of interaction with the first end of the rod of its pressure element, driven by a solid or liquid sensing element. 5. The valve according to claim 3, characterized in that the valve control element is made in the form of a cap fixed with the possibility of bottom contact with the first end of the rod, or in the form of a thermostatic head fixed with the possibility of interaction with the first end of the rod of its pressure element controlled by a solid or liquid sensing element. 6. The valve according to any one of claims 1, 2 and 5, characterized in that the valve disc is made with an annular groove in which an annular sealing element is installed for interfacing with the valve seat.

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