KR101134314B1 - Apparatus for control constant flow having manual adjusting valve - Google Patents

Abstract

When a room is not heated, a manually controlled flow control device is introduced so that the total flow rate is reduced by the optimal flow rate through the room.

The fixed flow rate control device includes a supply pipe (2) for supplying hot water to each generation; A hot water pipe line (4) communicating with the supply pipe (2) for branching each room and allowing the latent heat of the hot water to exchange heat with the room; A return pipe (5) communicating with the hot water pipe passage (4) to return the hot water after heat exchange; A return pipe (7) in which the flow rates of the return pipes (5) are gathered in one place and discharged to the outside of the household; An opening / closing valve 110 which is individually installed and manually operated in the return pipe 5 so as to open and close the passage of the return pipe 5; The room selector 121 is provided to indicate each of the rooms, and the optimum flow rate value of the room is stored. When one or more room selector 121 is selected, an electrical signal corresponding to the optimum flow rate value of the room is transmitted. A control unit 120; A variable flow valve (200) installed in the supply pipe (2) or the return pipe (7) to change the flow rate of the supply pipe or the return pipe according to an electrical signal of the controller (120). ) If the at least one room selector 121 is selected, it is reduced from the total flow rate value of the variable flow valve 200 by the optimum flow rate value of the room.

Description

Manual Adjustable Constant Flow Control Unit {APPARATUS FOR CONTROL CONSTANT FLOW HAVING MANUAL ADJUSTING VALVE}

In the present invention, the total flow rate of each generation is proportionally controlled according to the heating of each room in a manner in which the heating is manually controlled so that the total flow rate is reduced by the optimum flow rate of the room when the heating is not performed. A manual regulated flow rate control device is provided.

The heating system used in multi-family houses or large buildings uses individual heating to heat the fluid by means of a heat source such as a boiler installed independently in each household, and heats the fluid by an external heating source installed outside the household. After heating, the heated fluid is supplied to each household, and it is divided into the group heating.The group heating is again divided into the central heating using a heat source such as a central boiler in a multi-family complex or a large building, and the outside of the multi-family housing complex. Distinguished by district heating using the same heat source as the local power plant.

In general, such a heating system uses water as a heating fluid. Particularly, in a group heating system, a supply pipe branched into each generation from a central supply pipe supplied with hot water heated from a heat source is provided with a hot water supply header, a plurality of hot water pipes, and hot water return. The generation of hot water distribution system including a header and a return pipe for each generation is heated by each generation, after each generation return pipe is concentrated back to the central return pipe has a circulation system that is returned to the heat source.

Figure 1 is a schematic diagram showing a hot water distributor equipped with a conventional manual on-off valve.

As shown in Figure 1, the hot water distributor is a hot water supply header (3) connected to the supply pipe (2) branched from the central supply pipe (not shown), and branched to each room in the hot water supply header (3) to supply heat A plurality of hot water pipe passages 4, a return pipe 5 communicating with the hot water pipe passages 4, and a hot water return header 6 connected to the return pipes 5 in one place; It consists of a return pipe (7) connected to the hot water return header (6), and the central return pipe (not shown) connected to the household return pipe (7) again.

Conventional hot water distributor has a constant flow valve 10 is installed in the return pipe (7) connected to the hot water return header (6) to limit the total flow rate value for each generation, the total flow rate flow rate for each generation is It is the sum of the flow rate values in the flowing return pipe 5.

For example, assuming that the flow rate value that can flow through the first room is "50", the flow rate value of the second room is "40", the flow rate value of the third room is "30", and the flow rate value of the n-th room is "20". The total flow rate value supplied to the generation and passing through the flow rate valve 10 is 50 + 40 + 30 + 20 = 140.

At this time, each of the return pipe (5) is provided with an on-off valve (1) that can be manually operated so that the user can choose whether or not the heating in each room, the user opens the on-off valve (1) When the passage of the return pipe 5 is opened, the room is heated. When the user closes the opening / closing valve 1, the passage of the return pipe 5 is closed so that hot water is not supplied. It doesn't work. Currently, most homes are operated by a user manually operating the on / off valve (1) next to the hot water distributor to select the heating of each room.

However, in the conventional hot water distributor as described above, the constant flow rate valve 10 installed in the return pipe 7 to limit the total flow rate value of the generation has the following fatal problem.

In other words, the conventional constant flow valve 10 is set so as not to be changed once the total flow rate value is set at the time of construction, so that the constant flow rate corresponding to the set value always flows to the flow rate valve, so that no heating is required. Even if the room is manually closed by the on / off valve (1), more flows will flow at a faster flow rate than the optimum flow rate originally set to flow through the return pipe in the other room being heated (see flow rate (Q) = cross-sectional area × flow rate (AV)). ].

In the above case, for example, even when the heating of the first room is stopped, the total flow rate value remains unchanged and the value of "140" is maintained. Therefore, more than the optimal flow rate originally set to the second, third, or nth rooms being heated. The flow will flow.

After all, this is a problem that the flow rate is higher than the optimum flow rate, but the flow rate is relatively fast, so that the heat exchange rate between the room and the fluid does not occur enough to reduce the heating cost. It causes a decrease in efficiency.

In particular, when any one or more rooms are stopped heating, cavitation (cavitation) occurs as the flow velocity increases in the return pipe being heated, causing the water hammer to hit the inside of the pipe when the fluid flows, causing noise.

The present invention is to solve the problems as described above, the object is that the total flow rate by generation is controlled proportionally in accordance with the heating of each room, if there is a room in which heating is not performed as much as the optimum flow rate flowing through the room By reducing the overall oil quantity, ultimately, the heating efficiency is improved, thereby reducing the heating cost and preventing overflow from the return pipe being heated to solve the noise problem caused by cavitation.

In order to solve the above-mentioned problems,

A supply pipe for supplying hot water to each household; A hot water pipe communicating with the supply pipe so as to branch to each room and allow the latent heat of the hot water to exchange heat with the corresponding room; A return pipe communicating with each of the hot water pipe passages to return hot water after heat exchange; A return pipe in which the flow rates of the return pipes are gathered in one place and discharged outside the household; An on / off valve manually installed on each of the return pipes so as to open and close a passage of the return pipe; A room selector for each of the rooms, the optimum flow rate of the room being stored, and a control unit for transmitting an electrical signal corresponding to the optimum flow rate of the room when one or more room selectors are selected; A variable flow valve installed in the supply pipe or the return pipe to change the flow rate of the supply pipe or the return pipe according to an electrical signal of the control unit, wherein the control unit includes an optimum flow rate value of the room when one or more room selectors are selected; The variable flow valve is reduced from the total flow rate by the variable flow rate valve, The variable flow valve, the body is provided with a flow path in which the inlet and the outlet is communicated between the body is formed between the inlet and the outlet; A chamber in which a hydraulic passage is formed so that the inlet side hydraulic pressure and the seat side hydraulic pressure respectively act on an inner side of the body; A diaphragm installed to separate the chamber so that the inlet side hydraulic pressure and the seat side hydraulic pressure are acted on both sides thereof and deformed by the pressure difference; A movable body coupled to one side of the diaphragm and elastically installed to adjust a cross-sectional area leading from the seat to the outlet by a pressure difference in the chamber; At the other side of the body, the actuator for controlling the cross-sectional area from the inlet to the seat by the electrical signal; characterized in that it comprises a.

The control unit is characterized in that the manual control unit for manually adjusting the flow rate value of the variable flow rate valve to a certain ratio.

Meanwhile, the present invention provides a supply pipe for supplying hot water to each generation; A hot water pipe communicating with the supply pipe so that latent heat of the hot water is exchanged with a room; A return pipe communicating with the hot water pipe line to return the hot water after the heat exchange; A water return pipe communicating with the return pipe to discharge hot water to the outside of the household; An opening / closing valve installed on the return pipe and manually operated to open and close a passage of the return pipe; A variable flow valve installed in the supply pipe or the return pipe to change a flow value of the supply pipe or the return pipe by an electrical signal; And a control unit having a manual control unit for manually adjusting the flow rate by sending an electrical signal to the variable flow valve, wherein the control unit has a flow rate value of the variable flow valve according to manual adjustment of the manual control unit. Adjusting the ratio to a constant ratio, the variable flow valve, the inlet and outlet is provided with a flow path communicating therein the body formed between the inlet and the outlet; A chamber in which a hydraulic passage is formed so that the inlet side hydraulic pressure and the seat side hydraulic pressure respectively act on an inner side of the body; A diaphragm installed to separate the chamber so that the inlet side hydraulic pressure and the seat side hydraulic pressure are acted on both sides thereof and deformed by the pressure difference; A movable body coupled to one side of the diaphragm and elastically installed to adjust a cross-sectional area leading from the seat to the outlet by a pressure difference in the chamber; At the other side of the body, the actuator for controlling the cross-sectional area from the inlet to the seat by the electrical signal; characterized in that it comprises a.

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The movable body, the head portion coupled to the diaphragm; A stem portion extending from the head portion toward the seat to adjust a cross-sectional area leading from the seat to the outlet according to the deformation of the diaphragm; And an elastic member installed between the movable body and the chamber so that the movable body is restored when both pressures are the same based on the diaphragm.

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The actuator may include: a driving body electrically connected to the controller to convert an electrical signal of the controller into a kinetic force; And a moving rod extending from the driving body and inserted into the body, the moving rod being moved to adjust a cross-sectional area from the inlet side toward the seat.

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According to the present invention, if a room in which heating is stopped occurs, the total flow rate value of the household is proportionally reduced by the optimum flow rate corresponding to the room, and more excess flow rate than the predetermined flow rate is prevented from flowing to another room during heating. The heating cost is reduced and the noise caused by cavitation is eliminated.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2A is an explanatory view showing a control structure and a configuration according to a first preferred embodiment of the present invention, FIG. 2B is an explanatory view showing a control structure and a configuration according to a second preferred embodiment of the present invention, and FIG. 4 is a cross-sectional view showing the structure of a variable flow valve used in a preferred embodiment of the present invention, and FIG. 4 is a cross-sectional view showing the structure of a drive body used in the present invention.

First, as shown in Figure 2a the present invention is largely supply pipe (2), hot water pipe (4), return pipe (5), return pipe (7), opening and closing valve 110, control unit 120, variable flow valve 200 is made.

Each household can be composed of several rooms (1st, 2nd, 3rd, ... nth rooms) of different sizes, as shown in Fig. 2a. Assuming that the room becomes smaller, the required heat required to heat each room optimally (hereinafter referred to as "necessary required heat") is calculated based on various factors and overall heat loss (heating load). The calculated required heat quantity and the optimal flow rate of the room have a proportional relationship as shown below.

Q = G × C × ΔT

Q: required heat quantity [kcal / h] G: flow rate [lph]

C: Specific heat [kcal / kg ℃] △ T: Temperature change (indoor supply temperature-indoor return temperature)

Here, the specific heat is a constant value (the specific heat is 1 because hot water is used), and the temperature change value is a constant value because it must always be maintained at 15 ° C. in order to meet the “regional heating design standard”.

As a result, the heat quantity and the flow rate are in a proportional relationship, so the flow rate may be increased in order to increase the required calorific value. When the required calorific value of each room is determined, the optimum flow rate for meeting the heat can be set. The optimum flow rate value can be calculated.

The optimum flow rate value calculated for each room is stored in the controller 120 to be described later and used when controlling the flow rate of the variable flow valve 200. This will be described later.

On the other hand, the supply pipe (2) is a configuration for supplying hot water for each generation, the hot water pipe (4) is connected to the supply pipe (2) is branched by each room and is configured to allow the latent heat of the hot water to heat exchange with the room. .

The hot water pipe line 4 may be in direct communication with the supply pipe 2, but in general, the supply pipe 2 is connected to the hot water supply header 3, and the hot water supply line 3 is connected to the hot water pipe line 4. Is branched into each room and hot water flows to heat each room individually.

After the heat exchange with the rooms, the hot water is returned through the return pipe 5 connected to each hot water pipe line 4, and the returned hot water is collected in the hot water return header 6 and then connected to the hot water return header 6. Through the return pipe (7), the flow rate of the return pipes (5) is collected in one place and returned to the central return pipe outside the generation not shown.

In addition, the opening and closing valve 110 is installed in the return pipe (5) to open and close the passage of the return pipe (5), respectively, the configuration is operated manually by the user, most of the houses still open and close The presence or absence of heating is determined by the operation of the valve 110.

Therefore, when the user opens and operates the open / close valve 110, the passage of the return pipe 5 is opened so that hot water is supplied to the room, and the room is heated, and when the open / close valve 110 is closed, Since the passage of the return pipe (5) is blocked, the hot water is not supplied to the room and the heating is stopped.

In addition, as shown in Figure 2a, the control unit 120 is provided with a room selector 121 that can control the optimum flow value of each room, the room selector 121, the heating of any room is stopped When it is possible to select the room is stopped heating so as to reduce the total flow rate of the variable flow valve 200 by the optimum flow rate value corresponding to the room.

Therefore, if there is a room where the heating is stopped, the user selects the room selector 121 corresponding to the room so that the flow rate is reduced by the optimal flow rate value corresponding to the room where the heating is stopped from the total flow rate value. In 120, the optimum flow rate values of the room are stored.

The room selector 121 may be any shape as long as the user selects the structure. In the present invention, the room selector 121 is implemented as a button that can be pressed by hand.

If the user wants to stop heating in the first room, first closes the on-off valve 110 corresponding to the first room and selects the first room selector 121 corresponding to the first room from the control unit 120. The control unit 120 transmits an electrical signal corresponding to the optimum flow rate value of the first room (for example, "50") to the variable flow valve 200, the variable flow valve 200 is the control unit 120 In accordance with the electrical signal of the () in the total flow rate value ("140", for example, in the case of the previous case) is reduced by the amount corresponding to the optimum flow rate value ("50") of the first room, consequently the flow rate value of "90" The variable flow valve 200 passes through.

Here, the control unit 120 may be provided with a manual control unit 122 for manually adjusting the flow rate value of the variable flow rate valve 200 to a certain ratio, the form of the manual control unit 122 may be various In the present invention, but is implemented in the form of a jog shuttle switch that can be adjusted by the user by hand, as shown in Figure 2a, the form of the manual adjustment unit 122 is not necessarily limited thereto.

The manual control unit 122 is implemented to adjust the flow rate value of the variable flow valve 200 at a constant ratio from 0% to 100% minimum, for example, the manual control unit 122 is 50 If it is set to%, the heating of the first room is stopped as in the previous case, and the flow rate value of the variable flow valve 200 having the total flow rate value of "90" becomes "45", and this flow rate of "45" To each room being distributed.

As such, when the flow rate value of the variable flow valve 200 is reduced to 50%, the flow rate value flowing into each room during heating is also reduced to 50% with respect to the optimum flow rate value of the room. For reference, although not shown in each room, a micro flow rate control valve is provided to divide the flow rate at the same rate in each room.

The manual adjustment unit 122 is very useful when the user wants to save the heating cost even if the heating is reduced by arbitrarily adjusting the flow rate value of the variable flow valve 200 as needed.

On the other hand, the room selection unit 121 is required as described above because the case where there are several rooms so far is illustrated as an example, but the room selection unit 121 is required in the one-room type structure having one room as shown in FIG. 2B. none.

Therefore, the control unit 120 is provided with a manual control unit 122 for sending an electrical signal to the variable flow valve 200 to adjust the flow value of the variable flow valve 200, the manual control unit 122 is As described above, the user can manually adjust the functions, as described above.

As such, if only the manual control unit 122 is provided in the control unit 120, the heating cost is adjusted even if the heating is a little by adjusting the flow rate of the variable flow valve 200 at a constant ratio from 0% to 100%. This is useful when you want to save.

Accordingly, the controller 120 controls the flow rate of the variable flow valve 200 according to the manual adjustment of the manual adjustment unit 122 by a predetermined ratio, that is, the display ratio of the manual adjustment unit 122 to the total flow rate value. For example, if the manual adjustment unit 122 is set to 50%, the variable flow valve 200 reduces the flow rate to half the flow rate value relative to the total flow rate value.

In addition, the variable flow valve 200 is installed in the supply pipe (2) or the return pipe (7) to change the flow rate of the supply pipe (2) or the return pipe (7) by the electrical signal of the control unit (120) As a result, the total flow rate of the generation in the variable flow valve 200 is limited.

When an electrical signal is applied to the variable flow valve 200 will be described on the assumption that the supply pipe 2 or the return pipe 7 (for convenience, the variable flow valve 200 is installed in the return pipe 7 as shown below). By adjusting the flow rate cross-sectional area of the ()) so that the flow rate value passing through the return pipe (7) is changed, the structure of the variable flow valve 200 is shown in detail in FIG.

As shown in FIG. 3, the variable flow valve 200 includes a body 210, a chamber 220, a diaphragm 230, a movable body 240, and an actuator 250. It is broken.

An inlet 211 is formed at one side of the body 210 to receive the fluid to be returned, and an outlet 212 is formed at the other side thereof to the fluid. The body 210 has the inlet 211. A flow path through which the outlet 212 communicates is provided therein.

In addition, the body 210 has a sheet 213 is formed between the inlet 211 and the outlet 212 to reduce the cross-sectional area of the flow path is the fluid entering the body 210 through the inlet 211 is Passed through the sheet 213 is discharged to the outside through the outlet (212).

The chamber 220 is a predetermined space formed in one side of the body 210, the hydraulic passage (H) in the chamber 220 so that the hydraulic pressure on the inlet 211 side and the hydraulic pressure on the seat 213 side, respectively 221, 222 are formed.

Referring to FIG. 3, the chamber 220 has a first hydraulic passage 221 communicating with the inlet 211 side so that the hydraulic pressure acts on the inlet 211 side and the hydraulic pressure on the seat 213 side acts. A second hydraulic passage 222 is formed in communication with the seat 213 side.

Accordingly, the chamber 220 includes a first hydraulic chamber 223 communicating with the first hydraulic passage 221 and a second hydraulic chamber 224 communicating with the second hydraulic passage 222. Is separated by).

The diaphragm 230 is installed in the chamber 220 so that the first hydraulic chamber 223 and the second hydraulic chamber 224 are separated from each other, and both sides of the diaphragm 230 face the inlet 211. When the hydraulic pressure and the hydraulic pressure on the seat 213 side act, respectively, they are deformed by the pressure difference.

The movable body 240 is coupled to one side of the diaphragm 230 is elastically installed to adjust the cross-sectional area from the sheet 213 toward the outlet 212 by the pressure difference in the chamber 220, When the diaphragm 230 is deformed due to the pressure difference of the chamber 220, the diaphragm 230 receives the deformation force and approaches the sheet 213.

Here, the movable body 240 includes a head portion 241, a stem portion 242, and an elastic member 243, wherein the head portion 241 is coupled to the diaphragm 230. to be.

In addition, the stem portion 242 extends from the head portion 241 toward the seat 213 to adjust the cross-sectional area from the seat 213 toward the outlet 212 according to the deformation of the diaphragm 230. Site.

Therefore, the stem portion 242 is moved in accordance with the deformation of the diaphragm 230 while increasing or decreasing the cross-sectional area from the seat 213 toward the outlet 212 to lower or lower the hydraulic pressure at the seat 213 side. Raised.

The second hydraulic passage 222 communicating with the second hydraulic chamber 224 may be formed in the body 210 so as to communicate with the seat 213 side. However, in the present invention, the second hydraulic passage may be formed. 222 may be formed inside the stem 242.

Accordingly, the second hydraulic chamber 224 communicates with the seat 213 through the second hydraulic passage 222 formed in the stem 242.

In addition, when the first hydraulic chamber 223 and the second hydraulic chamber 224 are in the same pressure state, the movable body 240 should be restored to an initial position as shown in FIG. 243 is installed between the movable body 240 and the chamber 220.

When the fluid of a certain hydraulic pressure enters the body 210 and a high pressure fluid is higher than this at any moment, the hydraulic pressure of the inlet 211 becomes higher than the hydraulic pressure of the seat 213, and thus the inlet 211. The pressure of the first hydraulic chamber 223 in communication with the () is higher than the pressure of the second hydraulic chamber 224 in communication with the seat 213 bar pressure due to this pressure difference The diaphragm 230 is bent toward the second hydraulic chamber 224 by acting toward the second hydraulic chamber 224, and the movable body 240 is caused by the deformation of the diaphragm 230. The end of the movable body 240 is pushed toward the seat 213 to reduce the cross-sectional area leading from the seat 213 toward the outlet 212.

When the cross-sectional area leading from the seat 213 toward the outlet 212 is reduced, the oil pressure in the seat 213 gradually rises and finally reaches a state equal to the oil pressure of the inlet 211 side. When the hydraulic pressure of the seat 213 side becomes the same, the pressure of the first hydraulic chamber 223 and the second hydraulic chamber 224 reaches an equilibrium state, and the movable body 240 is restored to its original position by the elastic force.

As such, the chamber 220, the diaphragm 230, and the movable body 240 are configured such that the hydraulic pressure at the inlet 211 side and the seat 213 side can always be maintained the same. The reason for maintaining the same is that the pressure on the inlet 211 side and the sheet 213 side should be the same so that the cross-sectional area of the flow rate from the inlet 211 side to the sheet 213 side can be adjusted to accurately control the desired flow rate. Because there is.

On the other hand, when the hydraulic pressure of the inlet 211 side and the seat 213 side is maintained in the same state by the above configuration, the flow rate passing through the seat 213 by the actuator 250 is adjusted.

The actuator 250 is installed on the other side of the body 210, and controls the actual flow rate by adjusting the cross-sectional area from the inlet 211 toward the seat 213 by an electrical signal, the actuator 250 The flow rate control is enabled by substantially adjusting the cross-sectional area passing from the inlet 211 side to the seat 213 side.

The actuator 250 includes a driving body 251 and a moving rod 252 largely, the driving body 251 is electrically connected to the control unit 120 to be described later, the electrical signal from the control unit 120 When you receive it will be converted into exercise power.

The driving force of the driving body 251 is transmitted to the moving rod 252 and the cross-sectional area passing from the inlet 211 side toward the seat 213 is adjusted by the length change according to the movement of the moving rod 252. .

Here, the drive body 251 has a structure as shown in Figure 4, the control unit 120 is electrically connected to the drive motor 253 of the drive body 251 to operate the drive motor 253. The driving motor 253 applies a rotational force to the driving gear 255 through the reduction gear 254.

Although not shown in FIG. 4, the drive gear 255 is connected to the moving rod 252 so as to be capable of power transmission, thereby providing an external force for the linear movement of the moving rod 252.

At this time, since the controller 120 can receive the information on the position of the linear movement rod 252, the flow rate passing from the inlet 211 side to the seat 213 side because the controller 120 can know In addition, the driving gear 255 is power connected to the sensor gear 257 through the connecting gear 253.

Accordingly, when the driving gear 255 is rotated, the sensor gear 257 is rotated in conjunction with the sensor gear 257. The sensor gear 257 has a variable resistor 258, which is generally known, and the variable resistor 258. Since the output value of the controller 120 is input to the controller 120, the controller 120 receives the output value of the variable resistor 258 in real time, that is, the amount of rotation of the drive gear 255, that is, of the moving rod 252. The location is known.

The drive gear 255 may be rotated one or more times, but since the sensor gear 257 must be rotated in contact with the variable resistor 258, the number of revolutions is limited to less than one time. It is preferable that an appropriate gear ratio is set between the drive gear 255 and the sensor gear 257. For reference, in the present invention, the rotation angle of the sensor gear 257 is limited to 270 degrees or less, and a variable resistor 258 is installed within the rotation angle range, and the control unit 120 moves the moving rod 252. Various parameters such as the distance and the diameter of the seat 213 are input, and the flow rate can be estimated by knowing the moving distance of the moving rod 252.

As such, the movable rod 252 extends from the driving body 251 and receives a force from the driving body 251 to enter the sheet 213 toward the seat 213 while being inserted into the body 210. The flow rate is controlled as the moving rod 252 adjusts the cross-sectional area of the sheet 213.

At this time, the outer diameter of the movable rod 252 is preferably set to a size corresponding to the inner diameter of the seat 213, the fluid can flow at all when the movable rod 252 is completely fitted to the seat 213 The flow rate is " 0 ".

The control signal sent from the control unit 120 to the variable flow valve 200 is sent to the driving body 251 among the actuators 250 of the variable flow valve 200 to adjust the moving distance of the moving rod 252. The controller 120 may input various parameters such as the moving distance of the moving rod 252 and the diameter of the seat 213 to estimate the flow rate according to the moving distance of the moving rod 252.

As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to the specific Example described, and the person of ordinary skill in the art is not limited within the scope of this invention. Substitution and modification of the components are possible, which also belongs to the rights of the present invention.

1 is a schematic view showing a hot water distributor having a conventional manual on-off valve;

2A is an explanatory diagram showing a control structure and a configuration according to a preferred embodiment of the present invention;

2B is an explanatory diagram showing a control structure and a configuration according to a second preferred embodiment of the present invention;

3 is a cross-sectional view showing the structure of a variable flow valve used in a preferred embodiment of the present invention;

Figure 4 is a cross-sectional view showing the structure of the drive body used in the present invention.

<Description of the symbols for the main parts of the drawings>

2: supply pipe 4: hot water pipe

5: return pipe 7: return pipe

110: on-off valve 120: control unit

121: room selector 200: variable flow valve

210: body 211: entrance

212: exit 213: sheet

220: chamber 221: first hydraulic passage

222: the second hydraulic passage 223: the first hydraulic chamber

224: second hydraulic chamber 230: diaphragm

240: movable body 241: head portion

242: stem portion 243: elastic member

250: actuator 251: driving body

252: moving rod

Claims (6)

A supply pipe 2 through which hot water is supplied to each generation; A hot water pipe line (4) communicating with the supply pipe (2) for branching each room and allowing the latent heat of the hot water to exchange heat with the room; A return pipe (5) communicating with the hot water pipe passage (4) to return the hot water after heat exchange; A return pipe (7) in which the flow rates of the return pipes (5) are gathered in one place and discharged to the outside of the household; An opening / closing valve 110 which is individually installed and manually operated in the return pipe 5 so as to open and close the passage of the return pipe 5; Room selector 121 is provided for each room and the optimum flow rate value of the room is stored. When one or more room selector 121 is selected, an electrical signal corresponding to the optimum flow rate value of the room is transmitted. Control unit 120; A variable flow valve (200) installed in the supply pipe (2) or the return pipe (7) to change a flow rate value of the supply pipe or the return pipe according to an electrical signal of the controller (120). When the at least one room selector 121 is selected, 120 decreases the total flow rate value of the variable flow valve 200 by the optimum flow rate value of the room. The variable flow valve 200 may include: a body 210 having a flow path through which an inlet 211 and an outlet 212 communicate with each other and a seat 213 formed between the inlet 211 and the outlet 212; A chamber 220 in which a hydraulic passage is formed on one side of the body 210 so that the hydraulic pressure of the inlet 211 side and the hydraulic pressure of the seat 213 side are respectively acted on; The diaphragm 230 is installed so that the chamber 220 is separated, the hydraulic pressure of the inlet 211 side and the sheet 213 side hydraulic pressure is applied to both sides thereof, and is deformed by the pressure difference; A movable body 240 coupled to one side of the diaphragm 230 and elastically installed to adjust a cross-sectional area of the sheet 213 toward the outlet 212 by a pressure difference in the chamber 220; And an actuator (250) on the other side of the body (210) to adjust the cross-sectional area from the inlet (211) toward the seat (213) by an electrical signal. The method of claim 1, wherein the control unit 120 is a manually adjustable constant flow rate control device, characterized in that provided with a manual adjustment unit 122 for manually adjusting the flow rate value of the variable flow rate valve 200 at a predetermined ratio. A supply pipe 2 through which hot water is supplied to each generation; A hot water pipe passage (4) communicating with the supply pipe (2) to allow the latent heat of the hot water to exchange heat with the room; A return pipe (5) communicating with the hot water pipe (4) and returning hot water after heat exchange; A return pipe (7) communicating with the return pipe (5) for discharging hot water discharged outside the household; An opening / closing valve (110) installed on the return pipe (5) and manually operated so as to open and close the passage of the return pipe (5); A variable flow valve (200) installed in the supply pipe (2) or the return pipe (7) for changing a flow rate value of the supply pipe or the return pipe by an electrical signal; The control unit 120 is provided with a manual control unit 122 that is manually adjusted by sending an electrical signal to the variable flow valve 200 to adjust the flow rate value, and the control unit 120 includes the manual According to the manual adjustment of the adjusting unit 122, the flow rate value of the variable flow valve 200 is adjusted to a constant ratio, The variable flow valve 200 may include: a body 210 having a flow path through which an inlet 211 and an outlet 212 communicate with each other and a seat 213 formed between the inlet 211 and the outlet 212; A chamber 220 in which a hydraulic passage is formed on one side of the body 210 so that the hydraulic pressure of the inlet 211 side and the hydraulic pressure of the seat 213 side are respectively acted on; The diaphragm 230 is installed so that the chamber 220 is separated, the hydraulic pressure of the inlet 211 side and the sheet 213 side hydraulic pressure is applied to both sides thereof, and is deformed by the pressure difference; A movable body 240 coupled to one side of the diaphragm 230 and elastically installed to adjust a cross-sectional area of the sheet 213 toward the outlet 212 by a pressure difference in the chamber 220; And an actuator (250) on the other side of the body (210) to adjust the cross-sectional area from the inlet (211) toward the seat (213) by an electrical signal. delete The method according to any one of claims 1 to 3, wherein the movable body 240, A head portion 241 coupled to the diaphragm 230; A stem portion 242 extending from the head portion 241 toward the seat 213 to adjust the cross-sectional area of the sheet 213 toward the outlet 212 according to the deformation of the diaphragm 230; And an elastic member 243 disposed between the movable body 240 and the chamber 220 so that the movable body 240 is restored when both pressures are the same with respect to the diaphragm 230. Adjustable static flow control. The method according to claim 5, The actuator 250, A driving body 251 electrically connected to the control unit 120 to convert an electrical signal of the control unit 120 into kinetic force; A moving rod 252 extending from the driving body 251 to be inserted into the body 210 and moving to adjust a cross-sectional area of the inlet 211 toward the seat 213. A manually adjustable constant flow control device.

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