KR101425074B1 - Valve assembly for regulating flow rate, auto-control heating system having the valve assembly and method for controlling the same - Google Patents

Abstract

The flow control valve assembly according to the present invention comprises a water supply side valve body provided with a water supply side internal flow path, a water return valve body having a water return side internal flow path, a water return valve seat and a water return side orifice, A diaphragm housing including a diaphragm chamber having a diaphragm chamber and a return valve plug movably disposed inside the valve body, and a diaphragm chamber having a diaphragm that divides the diaphragm chamber into an upper chamber and a lower chamber, A plug assembly, a bypass pipe for fluidly connecting the supply-side internal flow path of the water supply side valve body and the upper chamber of the diaphragm housing, and a control valve actuator having an operation rod for moving the return valve plug. In this flow control valve assembly, the opening amount of the return side orifice is primarily adjusted by the movement of the return valve plug by the operation rod, the upper chamber formed by flowing the fluid in the water supply side internal flow path to the upper chamber through the bypass pipe When the diaphragm is elastically deformed by the pressure difference between the lower chambers, the return valve plug is moved so that the opening amount of the return-side orifice is secondarily adjusted.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow control valve assembly, an automatic control heating system having the flow control valve assembly,

The present invention relates to an automatic control heating system, and more particularly, to a flow control valve assembly for controlling a flow rate of a fluid so that an appropriate amount of flow necessary for efficient operation of an automatic control heating system can flow, And a control method thereof.

If the heating method of the house is classified according to the production method of the heat source, it can be classified into the individual heating method, the central heating method, and the district heating method. The individual heating method is to conduct heating operation by individual boilers installed for each generation and the central heating method is to supply the heat source produced in the central machine room of each complex to the respective households directly or through the heat exchanger of the machine room. The district heating system is a method of supplying a heat source, which is produced in batch by a certain region or a certain scale of heat production facilities, to a housing complex or a large building in a certain area.

The individual heating system generates heat sources for each household and conducts individual heating operation. As the efficiency and miniaturization of domestic boilers are increased and the fuel used is diversified from oil to electricity and city gas, the supply is increasing greatly. In particular, the individual heating system using these small boilers has the advantage of eliminating the unreasonable aspect of the heating fee collection compared to the central heating system, and reducing the management cost and operating cost according to the residents' will.

The central heating system is a heating system applied to most houses until the district heating system is introduced. The central machine room is installed in the complex, and the middle-temperature water is produced by the boiler of the first or second boiler. It is converted into low temperature water suitable for floor heating and hot water is supplied to each household. In this method, the hot water supply time, time, and frequency are usually intermittent hot water supply with 3 ~ 4 times a day according to the preset heating operation schedule with the fluctuation of the ambient temperature of the area as a main variable.

The supply of large heat sources by the district heating system expanded rapidly with the development of new cities. In a district heating system, a calorimeter or a flow meter is installed for each household, and a room temperature controller is attached to each household or room, thereby realizing room temperature control. If the heat source distribution system in the district heating is divided in terms of the distribution of the heat source, the machine room division that controls the heat source supplied from the district heating corporation to the primary side and the heat source supplied from the district heating to the household heating is controlled to the secondary side, The heat source supply can be divided into the tertiary side. Generally, in the district heating system, the design conditions are set to the heating supply temperature of 60 ° C and the heat exchange water temperature of 45 ° C, and the hot water is supplied by changing the hot water temperature setting according to the ambient temperature.

In such a heating system of various houses, an automatic control heating system is provided for each household. The automatic control heating system is called an individual room control system. It is an energy saving heating system which can adjust the room temperature of each room separately by installing a separate temperature controller in each room. In the automatic control heating system, the hot water pipe is buried in each room, and when the heating is not necessary, the valve of the hot water pipe is closed, thereby saving unnecessary energy waste and reducing the fuel cost. Korean Patent Registration No. 1099779 (Registered Dec. 21, 2011) discloses an example of such an automatic controlled heating system.

However, since the automatic control heating system as described above is supplied with a constant maximum flow rate for each household, even if the hot water supply to the room which does not require heating is cut off, the flow rate of hot water flowing in and out of each household is not changed As a result, there is a problem that energy is wasted by supplying more hot water to another room being heated. Also, if the heating of some rooms is cut off, the flow rate of the hot water supplied to the room where the heating is performed may be accelerated to generate noise, and the heat exchange efficiency of the hot water may be ineffective.

An object of the present invention is to solve the above problems, and an object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a hot- The present invention provides a flow control valve assembly capable of reducing energy waste and heating cost by actively controlling the total flow rate of the hot water heated by the heater, and an automatic control heating system and a control method thereof.

In order to achieve the above object, a flow control valve assembly according to the present invention comprises a water supply side valve body connected to a water supply pipe and having a water supply side internal flow path, a water supply valve body connected to a water return pipe, Side valve body having a return-side valve seat and a return-side orifice provided in the return-valve valve seat, and a return-side valve plug movably disposed inside the return-valve body for opening and closing the return- A diaphragm housing coupled to the return valve body and having a diaphragm chamber in which the return valve plug is movably disposed, and a diaphragm housing disposed in the diaphragm chamber, the diaphragm chamber being connected to the upper chamber and the lower chamber Side valve plug having a diaphragm to which the return valve plug is coupled Side valve body and the other end thereof is coupled to the diaphragm housing, and the diaphragm housing is coupled to the diaphragm housing by a bypass through which the water supply side internal flow path of the water supply side valve body and the upper chamber of the diaphragm housing are fluid- And a regulating valve actuator disposed on the upper portion of the diaphragm housing and having an operating rod for moving the return valve plug, wherein the return valve plug is moved by the operating rod to open the opening of the return- When the diaphragm is elastically deformed due to a pressure difference between the upper chamber and the lower chamber caused by the flow of the fluid in the water supply side internal flow path through the bypass pipe into the upper chamber, Side valve plug is moved, the return- It characterized in that the amount of opening of the piece to be adjusted to the secondary.

The return valve plug assembly may further include a spring disposed between the diaphragm housing and the valve actuator to apply an elastic force to the return valve plug in a direction away from the return-side orifice.

Side valve plug assembly includes a shaft coupling member coupled to the diaphragm and a control shaft having a spring pressing portion disposed between the diaphragm housing and the valve actuator to be screwed with the shaft coupling member and in contact with the spring When the adjustment shaft is rotated, the adjustment shaft and the spring pressing portion move by the screw movement between the adjustment shaft and the shaft engagement member, and the pressing force of the spring pressing portion against the spring changes, Can change.

Side valve plug assembly further comprises an adjustment key inserted into the through hole provided in the longitudinal direction inside the adjustment shaft and capable of relative rotation with the adjustment shaft and being slidably linearly movable, The adjustment shaft can linearly move along the adjustment key by screw movement with the shaft engagement member.

The flow control valve assembly according to the present invention comprises a water supply side valve seat disposed in the middle of the water supply side internal flow passage, a water supply side orifice provided in the water supply side valve seat, Side valve plug assembly including a water supply side valve plug movably disposed inside the water supply side valve plug and a plug operation member coupled with the water supply side valve plug so as to move the water supply side valve plug by a user operation have.

The water supply side valve plug assembly has a water supply side valve plug at its middle, a plug operation member at one end thereof and a screw connection at a shaft coupling hole provided at the inside of the water supply side valve body, And a plug shaft disposed so as to pass through the water supply side orifice in the body. When the user turns the plug operation member, the plug shaft rotates and moves by screw movement with the water supply side valve body, The plug can be moved.

Wherein said water supply side valve plug assembly has a through-hole in which said plug actuating member is inserted and which is disposed around said water supply side orifice for filtering out foreign matter contained in fluid passing through said water supply side orifice, Side valve body so as to be connected to the supply-side valve body when the plug is detached from the water-supply-side valve body, and a cap that is coupled to the through-hole formed at one side of the water- The through hole is opened so that the sieve can be discharged to the outside through the through hole of the water supply side valve body.

Side valve plug is provided with a plug internal flow passage through which the fluid of the return-side internal flow passage can flow and a connection passage extending from the plug internal flow passage to the external side face of the return valve plug, The fluid that has passed through the diaphragm housing can be introduced into the lower chamber of the diaphragm housing through a clearance between the outer surface of the return valve plug and the inner surface of the diaphragm housing through the connecting passage.

According to an aspect of the present invention, there is provided an automatic control heating system including a water supply pipe for supplying hot water, a hot water pipe connected to the water supply pipe for receiving hot water from the water pipe, A water supply pipe for returning hot water passing through the hot water pipe, an indoor thermometer installed in the room for detecting a room temperature of the room, A water supply thermometer installed upstream of the room in the hot water pipe including the hot water pipe and the water return pipe, a water return temperature thermometer provided downstream of the room in the hot water pipe for detecting the temperature of the hot water passing through the room, A temperature controller for setting a heating temperature of the room, a temperature controller for controlling the flow rate of the hot water, And a control device for controlling the flow rate control valve assembly by receiving information on the room temperature, the water supply temperature, the water return temperature, and the set temperature of the room from the temperature controller, The valve includes a water supply side valve body connected to the water supply pipe and provided with a water supply side internal flow path, a water return side valve seat connected to the water return pipe and disposed between the water return side internal flow path and the water return side internal flow path, Side valve body having a return-side orifice provided on the seat, a return-side valve plug movably disposed inside the return-valve body for opening and closing the return-side orifice, and a return- And a diaphragm chamber in which the return valve plug is movably disposed Side valve plug assembly having a diaphragm chamber and a diaphragm chamber, the diaphragm chamber being divided into an upper chamber and a lower chamber, the diaphragm having a diaphragm to which the return valve plug is coupled, And the other end thereof is connected to the diaphragm housing and connected to the feed-side internal flow path of the feed-side valve body and the upper chamber of the diaphragm housing for fluid movement, And a control valve actuator having an operation rod for moving a valve body of the water return valve plug, wherein the control device controls the supply water temperature and the water temperature difference DELTA T of the water return temperature to a preset reference hot water temperature difference range DELTA Tr1 to DELTA Tr2, Side valve plug with the control valve actuator, Side inlet orifice, and when the hot water temperature deviation? T is less than the reference hot water temperature deviation range? Tr1 to? Tr2, the return valve plug is moved to the regulating valve actuator, Side inlet orifice is firstly adjusted by reducing the amount of opening of the side-orifice so that the fluid in the supply-side internal flow path flows into the upper chamber through the bypass pipe, Side diaphragm is elastically deformed by a pressure difference between the diaphragm and the return-side valve, the opening of the return-side orifice is secondarily adjusted.

According to another aspect of the present invention, there is provided a method of controlling an automatic control heating system, comprising the steps of: (a) maximally opening an opening amount of a flow control valve for controlling a flow rate of hot water passing through a hot water pipe embedded in a room; (b) comparing the set temperature of the heating with the room temperature of the room; (c) if the set temperature is higher than the room temperature, the temperature of the hot water supplied to the room through the hot water pipe and (D) a step of comparing the hot water temperature deviation? T between the hot water return temperature and the reference hot water temperature deviation range? Tr1 to? And the amount of opening of the flow control valve is decreased when the hot water temperature deviation T is less than the reference hot water temperature deviation range (? Tr1 to? Tr2) And adjusting the amount of opening of the flow rate control valve.

The control method of an automatic control heating system according to the present invention is characterized in that when the pressure of hot water flowing into the hot water pipe after the step (d) is greater than the pressure of warm water passing through the hot water pipe, If the pressure of the hot water flowing into the hot water pipe is lower than the pressure of the hot water passing through the hot water pipe, the amount of opening of the flow control valve is increased to thereby adjust the opening amount of the flow control valve secondarily As shown in FIG.

The automatic control heating system according to the present invention realizes the opening amount of the flow control valve in real time so that the hot water having the optimum flow rate necessary for efficiently heating the room can be supplied to the room, taking into consideration the heating set temperature, the room temperature, So that efficient heating operation can be performed, waste of energy can be reduced, and heating cost can be reduced.

In the automatic control heating system according to the present invention, when a pressure difference is generated between the supply side pressure of the hot water and the return pressure on the side of the heating water due to the reduction of the heating load or the like, The opening amount is automatically adjusted. Thus, the overall flow rate through the heating zone is appropriately controlled, thereby enabling more efficient heating operation.

1 is a block diagram schematically showing an automatic control heating system according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view illustrating a part of a flow control valve assembly according to an embodiment of the present invention. FIG.
3 and 4 are side cross-sectional views illustrating a partial configuration of a flow control valve assembly according to an embodiment of the present invention.
5 is an exploded perspective view illustrating a water supply valve plug assembly of a flow control valve assembly according to an embodiment of the present invention.
6 is a partially exploded view of a flow control valve of a flow control valve assembly according to an embodiment of the present invention.
7 is an exploded perspective view of a valve plug assembly on a return side of a flow control valve assembly according to an embodiment of the present invention.
FIG. 8 and FIG. 9 illustrate the operation of the flow control valve of the flow control valve according to an embodiment of the present invention.
10 is a view for explaining a method of adjusting the elastic force of a spring provided on the return valve plug assembly of the flow control valve assembly according to an embodiment of the present invention.
11 is a control flowchart for explaining a method of controlling an automatic controlled heating system according to an embodiment of the present invention.

Hereinafter, a flow control valve assembly according to an embodiment of the present invention, an automatic control heating system having the same, and a control method thereof will be described in detail with reference to the accompanying drawings.

In describing the present invention, the sizes and shapes of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of explanation. In addition, the terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. These terms are to be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the contents throughout the present specification.

1 is a block diagram schematically showing an automatic control heating system according to an embodiment of the present invention.

1, an automatic control and heating system 100 according to an embodiment of the present invention includes a water supply pipe 102 for supplying hot water, a water return pipe 104 for returning hot water, A plurality of hot water pipes 126 and 127 for supplying the heat of the hot water supplied from the water supply header 110 to the rooms 121, 122, 123 and 124, A water return header 130 for collecting the hot water having passed through the hot water pipes 128, 129 and the hot water pipes 126, 127, 128, 129 and guiding the hot water to the water return pipe 104, A plurality of temperature regulators 156, 157, 158 and 159 for setting the heating temperature of the heating system 123 (124), a control device 160 for controlling the overall operation of the heating system 100, A plurality of indoor thermometers 171, 172, 173 and 174 installed in the respective rooms for detecting the indoor temperatures of the rooms 121, 122, 123 and 124, A plurality of feed water thermometers 176, 177, 178, and 179 for detecting the feed water temperature of the hot water supplied to the feed water temperature sensor 123, A water temperature sensor 180, a water supply pipe 102, and a water return pipe 104 for detecting the temperature of the water that is returned through the water pipes 121, 122, 123, and 124 through the water return pipe 104, And a flow control valve assembly 190 for controlling the flow rate of hot water to be returned through the water return pipe 104 at the same time. The water supply pipe 102, the water supply header 110, the hot water pipes 126, 127, 128 and 129, the water return header 130 and the water return pipe 104 constitute hot water pipes for the flow of hot water . The water supply thermometers 176, 177, 178 and 179 are installed upstream of the rooms 121, 122, 123 and 124 in the hot water piping, (122), (123) and (124).

The plurality of hot water pipes 126, 127, 128 and 129 are buried in the respective rooms 121, 122, 123 and 124 and hot water is supplied to the hot water pipes 126, 127 and 128 129, the heating of the rooms 121, 122, 123, 124 is performed. The hot water supply valves 141, 142, and 143 are provided between the water supply header 110 of each of the hot water pipes 126, 127, 128, and 129 and the rooms 121, 122, 123, (144). The hot water supply valves 141, 142, 143 and 144 are for interrupting the flow of hot water through the hot water pipes 126, 127, 128 and 129, 142, 143, 144 to manually shut off the supply of hot water to the hot water pipes 126, 127, 128, 129.

147 and 148 are provided between the chambers 121, 122, 123 and 124 of the hot water pipes 126, 127, 128 and 129 and the water return header 130, ) 149 are provided. The automatic control valves 146, 147, 148 and 149 serve to regulate the flow rate of the hot water flowing through the hot water pipes 126, 127, 128 and 129. Valve actuators 151, 152, 153 and 154 are coupled to the respective automatic control valves 146, 147, 148 and 149. The valve actuators 151, 152, 153 and 154 control the opening of the hot water pipes 126, 127, 128 and 129 by adjusting the opening amount of the automatic control valves 146, 147, 148, 121, 122, 123, and 124 through the first and second heat exchangers.

The valve actuators 151, 152, 153, and 154 are controlled by the control device 160. When the user sets the heating temperature with the rooms 121, 122, 123 and 124 that require heating through the temperature controllers 156, 157, 158 and 159, 152, 153 and 154 coupled to the automatic control valves 146, 147, 148 and 149 of the control valves 126, 127, 128 and 129 to operate the corresponding hot water And the hot water flows through the pipes 126, 127, 128, 129.

The controller 160 controls the indoor temperature of the rooms 121, 122, 123 and 124 from the indoor thermometers 171, 172, 173 and 174, the water temperature thermometers 176, 177 and 178 The water temperature of the hot water supplied from the water temperature sensor 179 to the rooms 121, 122, 123 and 124, the hot water return temperature from the water temperature thermometer 180 through the water return pipe 104, 157, 158, and 159 to the set temperatures of the rooms 121, 122, 123, and 124 and controls the valve actuators 151, 152, 153, 147, 148, and 149, and controls the flow regulating valve assembly 190. The flow regulating valve assembly 190 is controlled by the control valve 146, That is, the control device 160 determines whether or not the hot water of the optimum flow rate necessary for efficiently heating the rooms 121, 122, 123 and 124 is stored in the corresponding room 121, considering the heating set temperature, the room temperature, the water supply temperature, 147, 148, 149 and the flow control valve assembly 190 to be supplied to the control valves 121, 122, 123, 124 in real time. In the present invention, the controller 160 includes a temperature controller 156, 157, 158, 159 for communicating with a plurality of temperature controllers 156, 157, 158, 159, 156, 157, 158, and 159, respectively, as shown in FIG.

The flow control valve assembly 190 actively controls the flow rate of the hot water that is returned through the water return pipe 104 according to the heating efficiency and the heating load of the supplied hot water, thereby reducing the waste of hot water and enabling efficient heating operation . 1, the flow control valve assembly 190 includes a flow control valve 200 connected to the water supply pipe 102 and the return pipe 104 at the same time and a control valve actuator 195 coupled to the flow control valve 200 ). The flow control valve 200 includes an inlet control valve 211 connected to the water supply pipe 102, an outlet control valve 212 connected to the water return pipe 104 and an outlet control valve 211 and an outlet control valve 212, And a bypass pipe 213 connecting the bypass pipe 213 with the bypass pipe 213.

2 to 4, the inflow control valve 211 includes a water supply side valve body 214 and a water supply side valve plug assembly 215, and the outflow control valve 212 is connected to the return side valve body 216 and a return valve plug assembly 217. The water supply side valve body 214 and the water return valve body 216 are integrally coupled through a connection portion 218.

The water supply side valve body 214 is disposed in the middle of the water supply side internal flow path 214c and the water supply side internal flow path 214c which connect the inlet 214a and the outlet 214b and the inlet 214a and the outlet 214b A water supply side valve seat 219, and a water supply side orifice 219a provided in the water supply side valve seat 219. A water supply side plug coupling part 220 having a through hole connected to the water supply side internal flow path 214c is provided in the middle of the water supply side valve body 214. A water supply side valve plug assembly 215 is screwed to the water supply side plug engagement portion 220. A shaft engagement hole 214d is provided in the water supply side valve body 214 and a female screw hole is provided around the shaft engagement hole 214d.

A pipe coupling hole 214e for coupling the bypass pipe 213 is provided on an outer surface of the water supply side valve body 214 and a pipe coupling hole 214e is formed on the side of the pipe coupling hole 214e, And an insertion hole penetrating the side surface is provided. A variety of measuring mechanisms for measuring the physical properties of the hot water flowing through the water supply side internal flow path 214c such as a pressure gauge or a flow meter can be incorporated in the insertion hole, and the unused insertion hole is closed by the plug 221.

5 and 6, the water supply side valve plug assembly 215 includes a water supply side valve plug 222 for opening and closing the water supply side orifice 219a, a plug shaft 223 for supporting the water supply side valve plug 222 A plug 229 engaged with one end of the plug shaft 223; a plug 229 screwed to the feed side plug coupling 220; a handle wheel 230 coupled to the plug actuating member 226; And a cylindrical sieve 231 for filtering the foreign substances contained in the hot water flowing into the water supply side orifice 219a.

The plug shaft 223 has a threaded portion 224 provided with a male thread 224a and a coupling portion 224 engaged with the plug actuating member 226 so as to be screwed into the shaft engagement hole 214d of the water supply side valve body 214 225). The cross-sectional shape of the engaging portion 225 may be a polygonal shape as shown, or various other non-circular shapes. The water supply side valve plug 222 is coupled in the middle of the plug shaft 223 so as to move together with the plug shaft 223.

The plug operation member 226 is engaged with the plug shaft 223 and the handle wheel 230. An engaging hole 226a for inserting the engaging portion 225 of the plug shaft 223 is provided at one end of the plug actuating member 226 and an engaging hole 226b is formed at the other end of the plug actuating member 226 for engaging the handle wheel 230 An engaging portion 227 is provided. The cross-sectional shape of the engaging portion 227 may be a polygonal shape as shown, or various other non-circular shapes. A sealing member 228 is coupled to the outer peripheral surface of the plug actuating member 226.

The plug 229 has a male thread 229a corresponding to the female thread 220a of the water supply plug engagement portion 220 and a through hole 229b through which the plug operation member 226 can pass. The sealing member 228 of the plug actuating member 226 is brought into close contact with the inner circumferential surface of the plug 229 when the plug actuating member 226 is inserted into the through hole 229b so that the gap between the plug actuating member 226 and the plug 229 To seal the gap.

The handle wheel 230 has a fitting hole 230a into which the engaging portion 227 of the plug actuating member 226 is inserted. The engaging hole 230a has a non-circular shape corresponding to the cross-sectional shape of the engaging portion 227 of the plug actuating member 226. [

3 and 4, the water supply side valve plug assembly 215 is coupled to the water supply side plug engagement portion 220 of the water supply side valve body 214 to connect the water supply side orifice 214 of the water supply side valve body 214 (219a). The plug shaft 223 is screwed into the shaft engagement hole 214d of the water supply side valve body 214 and the stopper 229 is screwed into the water supply side plug engagement portion 220. The plug actuating member 226 coupled to the plug shaft 223 passes through the through hole 229b of the plug 229 and the engaging portion 227 thereof protrudes outside the plug 229. [ The handle wheel 230 is engaged with the engaging portion 227 of the plug actuating member 226 and disposed outside the water supply side plug engaging portion 220.

When the user turns the handle wheel 230 with the inlet control valve 211 assembled with the water supply valve body 214, the plug operation member 226 and the plug shaft 223 rotate. Since the plug shaft 223 is screwed into the water supply side valve body 214, the plug shaft 223 is linearly moved in the axial direction together with the rotation. When the plug shaft 223 linearly moves in the axial direction, the water supply side valve plug 222 is moved closer to or away from the water supply valve seat 219 to open or close the water supply side orifice 219a. When the water supply side orifice 219a is opened, hot water flowing into the water supply side internal flow path 214c through the inlet port 214a of the water supply valve body 214 flows through the water supply side orifice 219a and flows toward the outlet port 214b do. The hot water flowing into the water supply side internal flow path 214c passes through the water line 231 before passing through the water supply side orifice 219a, so that the foreign matter contained in the hot water is caught by the water line 231.

On the other hand, as shown in FIG. 6, when the plug 229 is detached from the water supply side plug engagement portion 220, the water supply side 231 can be separated from the water supply side valve body 214. The water supply side valve plug 222, the plug shaft 223 and the plug actuating member 226 can be kept coupled to the water supply side valve body 214 even if the plug 229 is separated from the water supply side valve body 214 have. Therefore, the filter 231 can be separated without separating all the components of the inflow control valve 211, so that the filter 231 can be separated easily and the filter 231 can be easily cleaned.

2 to 4, the water return valve body 216 includes an inlet 216a, an outlet 216b, a water return side internal flow passage 216c for connecting the inlet 216a and the outlet 216b, Side valve seat 233 disposed in the middle of the inner flow path 216c and a return-side orifice 233a provided in the return-valve seat 233. The return- A return-side plug engaging portion 234 having a through-hole connected to the return-side internal flow passage 216c is provided in the middle of the return valve body 216. [ The return-side valve plug assembly 217 is screwed to the return-side plug fitting portion 234.

In the middle of the return valve body 216, an insertion hole is formed to pass through the side surface of the return valve body 216. [ A variety of measuring mechanisms for measuring the physical properties of the hot water flowing through the return-side internal flow path 216c such as a pressure gauge or a flow meter can be incorporated in the insertion hole, and the unused insertion hole is closed by the plug 221.

2 to 4 and 7, the return valve plug assembly 217 includes a diaphragm housing 236, a diaphragm 243 disposed inside the diaphragm housing 236, a diaphragm 243 Side valve plug 245 disposed on the lower surface of the disk 244 so as to be linearly moved by the movement of the diaphragm 243 and a diaphragm 243 disposed on the upper surface of the diaphragm 243 The adjustment shaft 248 that is screwed to the shaft coupling member 247, the adjustment key 251 that is inserted into and coupled to the adjustment shaft 248, and the return valve plug 245 in the upward direction A spring 255 disposed on the upper surface of the diaphragm housing 236 to apply an elastic force and a spring cover 256 coupled to the upper surface of the diaphragm housing 236 and coupled with the control valve actuator 195.

The diaphragm housing 236 is composed of a lower cover 237 and an upper cover 238 and a diaphragm chamber 239 is provided inside the diaphragm housing 236. The diaphragm chamber 239 is partitioned by the diaphragm 243 into an upper chamber 239a and a lower chamber 239b.

The lower cover 237 has an upwardly opened and recessed concave shape, and a valve body coupling portion 240 coupled to the return-side plug coupling portion 234 is provided at a center of a lower surface thereof. The valve body coupling portion 240 is provided with a male thread 240a corresponding to the female thread 234a of the return plug coupling portion 234 and the lower cover 237 is screwed to the valve body coupling portion 240. A through hole 240b is formed at the center of the lower cover 237 so as to pass through the valve body coupling portion 240.

The upper cover 238 is opened in a downward direction and is recessed inwardly, and a cover engagement portion 241 is provided at the center of the lower cover 238 to which the spring cover 256 is screwed. On the inner peripheral surface of the cover engaging portion 241, an arm nut 241a is provided. A through hole 241b penetrating through the cover engaging portion 241 is provided at the center of the upper cover 238. [ The upper cover 238 has a pipe coupling portion 242 to which a bypass pipe 213 is coupled. The pipe coupling portion 242 is provided with a coupling hole 242a through which the fixing nipple 263 of the bypass pipe 213 is screwed and the coupling hole 242a is connected to a connection And is connected to the flow path 238a. The connection passage 238a is connected to the upper chamber 239a of the diaphragm housing 236. [

The diaphragm 243 is made of a material having a thin disc shape and being elastically deformable. The diaphragm 243 is disposed in the middle of the diaphragm chamber 239 with its rim interposed between the lower cover 237 and the upper cover 238. A disk 244 is coupled to the lower surface of the diaphragm 243. A through hole through which the shaft coupling member 247 is inserted is provided at the center of each of the diaphragm 243 and the disk 244.

The water return valve plug 245 is for opening and closing the water return side orifice 233a of the water return valve body 216 and is coupled to the lower end of the shaft coupling member 247 and is inserted into the through hole 240b of the lower cover 237. [ Side valve body 216 through a through-hole (not shown). A sealing member 246 for sealing between the outer surface of the return valve plug 245 and the inner surface of the lower cover 237 is coupled to the outer surface of the return valve plug 245. Side valve plug 245 is provided with a female screw thread at the lower end of the shaft coupling member 247 and an inner thread corresponding to the male thread of the shaft coupling member 247 is provided on the inner surface of the return valve plug 245, Is screwed into the member (247). Of course, the coupling structure of the return valve plug 245 and the shaft coupling member 247 can be variously changed.

When the return valve plug 245 moves away from the return valve seat 233, the amount of opening of the return-side orifice 233a increases and the flow rate of the hot water discharged through the return valve body 216 increases, The opening amount of the return-side orifice 233a is reduced and the flow rate of the hot water discharged through the return-side valve body 216 is reduced when the return valve 245 is brought close to the return valve sheet 233. [ The operation of the return valve plug 245 is automatically adjusted by the pressure difference between the inside of the regulating valve actuator 195 and the water supply side valve body 214 and the pressure inside the return valve body 216. [

As shown in FIG. 3, the return valve plug 245 is provided with a plug internal passage 245a and a connecting passage 245b connected to the plug internal passage 245a. The plug internal flow path 245a extends inward from the lower end of the return valve plug 245. [ The connection passage 245b extends from the plug inner flow path 245a to the outer side surface of the return valve plug 245. Hot water passing through the return-side internal flow path 216c of the return-side valve body 216 flows into the plug internal flow path 245a of the return valve plug 245. [ The hot water flowing into the plug inner flow path 245a passes through the connecting path 245b and flows through the gap between the outer surface of the return valve plug 245 and the inner surface of the diaphragm housing 236, And flows into the chamber 239b.

The shaft coupling member 247 is formed in the shape of a hollow tube, and an inner cylindrical surface 247a is provided on the inner peripheral surface. The shaft coupling member 247 is coupled to the center of the diaphragm 243 so that the rotational movement is suppressed but the diaphragm 243 can linearly move in the vertical direction when the diaphragm 243 is elastically deformed.

The adjustment shaft 248 is screwed to the shaft coupling member 247. The adjustment shaft 248 includes a shaft-shaped shaft portion 249 having a hollow tube shape and a donut-shaped spring pressing portion 250 disposed at the upper end of the shaft portion 249. At the lower end of the shaft portion 249, a male screw thread 249a corresponding to the arm nut 247a of the shaft coupling member 247 is provided. An adjustment key 251 is inserted and coupled to the adjustment shaft 248.

The adjustment key 251 includes a body portion 252 inserted into the adjustment shaft 248 and a head portion 253 disposed at the upper end of the body portion 252. A key groove 253a is provided at the upper end of the head 253 and a sealing member 254 is coupled to the outer surface of the head 253. [ The body portion 252 of the adjustment key 251 has a polygonal cross-sectional shape. The through hole of the adjustment shaft 248 into which the adjustment portion 251 is inserted has a shape corresponding to the cross-sectional shape of the body portion 252. Therefore, the adjustment shaft 248 and the adjustment key 251 can not perform relative rotation but can perform relative linear motion. That is, the adjustment shaft 248 and the adjustment key 251 rotate together, and the adjustment shaft 248 can move up and down along the body portion 252 of the adjustment key 251.

The coupling structure of the adjustment shaft 248 and the adjustment key 251 can be variously changed. That is, the shape of the through-hole of the adjustment shaft 248 and the cross-sectional shape of the body portion 252 of the adjustment key 251 are not limited to the polygonal shape shown in the drawing, but may be changed to another non- .

The adjustment shaft 248 is urged upward by the spring 255. The lower end of the spring 255 is in contact with the upper surface of the upper cover 238 of the diaphragm housing 236 and the upper end of the spring 255 is in contact with the lower surface of the spring pressing portion 250 of the adjusting shaft 248. Accordingly, the spring 255 is compressed when the adjusting shaft 248 receives the external force and returns to the original position when the lowered adjusting shaft 248 is elastically restored.

The spring 255 is disposed within the spring cover 256 coupled to the top of the diaphragm housing 236. The spring cover 256 is formed in a hollow tube shape and has an actuator coupling portion 257 at an upper end thereof to which the valve coupling portion 196 of the control valve actuator 195 is coupled. An opening 257a through which the actuating rod 197 of the control valve actuator 195 is inserted is provided in the upper portion of the actuator coupling portion 257.

2 and 4, the bypass pipe 213 connects the inflow control valve 211 and the outflow control valve 212 to each other. The fixing nipple 262 provided at one end of the bypass pipe 213 is coupled to the fitting hole 214e of the water supply valve body 214 and is fixed to the fixing nipple 263 provided at the other end of the bypass pipe 213. [ Is coupled to the engagement hole 242a of the diaphragm housing 236. [ The hot water passing through the water supply side internal flow path 214c of the water supply side valve body 214 passes through the bypass pipe 213 and flows through the diaphragm 243 through the connection flow path 238a of the diaphragm housing 236, As shown in FIG.

The control valve actuator 195 is controlled by the controller 160 and includes a valve coupling portion 196 coupled to the flow control valve 200 and an operation rod 197 for moving the return valve plug 245 . The operating rod 197 is inserted into the spring cover 256 through the opening 257a of the spring cover 256 and contacts the head 253 of the adjusting key 251. [ When the operating rod 197 is lowered and the adjustment key 251 is pressed, the spring 255 and the diaphragm 243 are elastically deformed so that the return valve plug 245 descends toward the return valve seat 233, The amount of opening of the opening 233a decreases. When the operating rod 197 rises, the spring 255 and the diaphragm 243 are elastically restored and the return valve plug 245 is moved away from the return valve seat 233 to increase the opening amount of the return-side orifice 233a . The control valve actuator 195 may be of a variety of constructions capable of pushing or pulling the return valve plug 245.

Hereinafter, the operation of the flow control valve assembly according to an embodiment of the present invention will be described with reference to the accompanying drawings.

The hot water supplied from the outside through the water supply pipe 102 flows into the water supply header 110 through the water supply valve body 214 of the flow control valve 200. The hot water introduced into the water supply header 110 flows through the hot water supply valves 141, 142, 143 and 144 and the automatic control valve 146 147, 148 and 149 are all opened through the hot water pipes 126, 127, 128 and 129 and into the water return header 130. The hot water in the water return header 130 flows along the water return pipe 104, passes through the water return valve body 216 of the flow control valve 200, and is discharged to the outside.

The user adjusts the amount of opening of the water supply side orifice 219a by moving the water supply valve plug 222 by turning the handle wheel 230 of the water supply valve plug assembly 215 provided in the flow control valve 200, The side orifice 219a can be opened and closed. When the amount of opening of the water supply side orifice 219a is increased, the flow rate of the hot water supplied through the water supply valve body 214 can be increased. If the opening amount of the water supply side orifice 219a is reduced, Can be reduced.

8, when the operating rod 197 of the control valve actuator 195 is lowered and the adjusting key 251 is pushed downward, the shaft coupling member 247 and the return valve plug 245 are lowered And approaches the return valve sheet 233. At this time, the amount of opening of the water return side orifice 233a decreases and the flow rate of the hot water discharged through the water return valve body 216 and the water return pipe 104 decreases, and the hot water pipes 126, 127, 128, 129 The flow rate of the hot water flowing along the flow path is also reduced. Then, the spring 255 is compressed and the diaphragm 243 is elastically deformed.

The spring 255 and the diaphragm 243 are resiliently restored so that the shaft coupling member 247 and the return valve plug 245 are elastically restored when the operating rod 197 is lifted and the pressing force against the adjustment key 251 is removed. Side valve seat 233 while rising. At this time, the amount of opening of the water return side orifice 233a increases and the flow rate of the hot water flowing back through the water return pipe 104 and the flow rate of the hot water flowing along the hot water pipes 126, 127, 128, do.

In the state where the amount of opening of the flow control valve 200 is adjusted by the control valve actuator 195 in this manner, the number of the rooms 121, 122, 123, 124 where the heating is performed decreases, The pressure of hot water passing through the body 214 can be increased. When the pressure of the hot water passing through the water supply side valve body 214 becomes larger than the pressure of hot water passing through the water return valve body 216 as shown in FIG. 9, the hot water passing through the water supply side valve body 214 And a part thereof flows into the upper chamber 239a inside the diaphragm housing 236 through the bypass pipe 213 and the connecting passage 238a.

When the pressure of the upper chamber 239a increases due to the inflow of the hot water, the diaphragm 243 is elastically deformed and the central portion of the diaphragm 243 descends toward the lower chamber 239b. At this time, the shaft coupling member 247 coupled to the diaphragm 243 and the return valve plug 245 are lowered to approach the return valve sheet 233. Accordingly, the amount of opening of the water return side orifice 233a is reduced and the flow rate of the hot water discharged through the return valve body 216 and the water return pipe 104 is reduced, and the hot water pipes 126, 127, 128, 129 The total flow rate of the hot water flowing along the flow path is decreased.

As described above, when hot water flows into the upper chamber 239a, some of the hot water flowing into the return valve body 216 flows into the plug internal flow path 245a of the return valve plug 245, Passes through the connecting passage 245b of the valve plug 245 and flows into the lower chamber 239b of the diaphragm housing 236 through the space between the outer surface of the return valve plug 245 and the inner surface of the diaphragm housing 236 .

When the diaphragm 243 is elastically deformed and the shaft coupling member 247 and the return valve plug 245 move, the adjustment shaft 248 screwed with the shaft coupling member 247 moves together. The movement of the return valve plug 245 is influenced by the elastic force of the spring 255 since the adjustment shaft 248 receives the elastic force in the upward direction by the spring 255. [ When the elastic force of the spring 255 is weak, the deformation of the diaphragm 243 and the movement of the return valve plug 245 are facilitated. However, when the elastic force of the spring 255 is applied to the deformation / The movement of the plug 245 becomes difficult. Therefore, by regulating the elastic force of the spring 255, it is possible to control the deformation of the diaphragm 243 and the movement of the valve plug 245 on the return side.

10, when the user removes the tool 10 corresponding to the key groove 253a of the adjustment key 251 from the key groove 253a while separating the control valve actuator 195 from the flow control valve 200, The adjusting shaft 258 rotates together with the adjusting key 251 when the adjusting key 251 is turned by turning the tool 10. [ The adjustment shaft 248 is screwed to the shaft coupling member 247 and the shaft coupling member 247 is coupled to the diaphragm 243 and can not rotate so that the adjustment shaft 248 and the shaft coupling member 247, The adjustment shaft 248 slides along the body portion 252 of the adjustment key 251 by the screw movement. When the adjustment shaft 248 rises, the elastic force of the spring 255 becomes small, so that even when a small pressure is generated in the upper chamber 239a, the diaphragm 243 can be elastically deformed. On the other hand, when the adjustment shaft 248 is lowered, the elastic force of the spring 255 is reduced, and the pressure of the upper chamber 239a becomes larger so that the diaphragm 243 can be elastically deformed.

A specific control method of the automatic control heating system having the flow rate control valve will be described with reference to FIG.

When the user selects the heating mode using the temperature controllers 156, 157, 158 and 159 and sets the heating temperatures of the rooms 121, 122, 123 and 124, The control valve actuator 195 is controlled to open the flow control valve 200 at the maximum (S11). Subsequently, the room temperature Ta of the rooms 121, 122, 123, and 124 is compared with the set temperature Tas determined through the temperature controllers 156, 157, 158, and 159 (S12) If the set temperature Tas is lower than the room temperature Ta, the control valve actuator 195 is controlled to close the flow control valve 200 (S13).

When the set temperature Tas is larger than the room temperature Ta, the control device 160 controls the supply water temperature detected by the water supply thermometers 176, 177, 178, and 179 and the water temperature detected by the water return temperature meter 180 Temperature temperature difference DELTA T between temperatures is compared with preset reference hot-water temperature range DELTA Tr1 to DELTA Tr2 (S14). Here, the reference hot water temperature range (? Tr1 to? Tr2) can be set appropriately (e.g., 13 to 17 占 폚) according to the capacity and efficiency of the heating system and the reference hot water temperature deviation range? Tr1 to? May be changed to one reference hot water temperature deviation.

The control device 160 controls the control valve actuator 195 to reduce the amount of opening of the flow control valve 200 (S15) if the hot water temperature difference DELTA T is less than the reference hot water temperature deviation range DELTA Tr1 to DELTA Tr2, . The reason why the hot water temperature deviation? T between the water supply temperature and the water return temperature becomes smaller than the reference hot water temperature deviation ranges? Tr1 to? Tr2 is that the heat exchange efficiency of hot water is lowered and the water return temperature becomes higher. At this time, a large part of the heat of the supplied hot water is not smoothly supplied to the room air of the rooms 121, 122, 123, 124 but passes through the rooms 121, 122, 123, Maintaining the supply flow wastes energy. In this case, the control device 160 reduces the amount of opening of the flow control valve 200 and supplies it to the rooms 121, 122, 123 and 124 through the hot water pipes 126, 127, 128 and 129 By reducing the flow rate of hot water supplied, energy waste can be reduced. At this time, if the flow control valve 200 is closed, the flow control valve 200 is maintained in the closed state.

On the other hand, when the hot water temperature deviation DELTA T exceeds the reference hot water temperature deviation range DELTA Tr1 to DELTA Tr2, the controller 160 determines whether the opening amount of the flow control valve 200 is the maximum (S16) When the opening amount of the flow control valve 200 is the maximum, the flow control valve 200 is maintained at the maximum opening amount, and when the opening amount of the flow control valve 200 is smaller than the maximum opening amount, the opening amount of the flow control valve 200 is increased S17). When the hot water temperature deviation T between the water supply temperature and the water return temperature is larger than the reference hot water temperature deviation range? Tr1 to? Tr2, heat exchange is performed between the supplied hot water and the room air in the rooms 121, 122, 123, This is when the heating by hot water is being efficiently performed. At this time, the controller 160 increases the opening amount of the flow control valve 200 and supplies it to the rooms 121, 122, 123 and 124 through the hot water pipes 126, 127, 128 and 129 (122), (123), and (124) can be rapidly increased by increasing the flow rate of the hot water.

While the control device 160 and the control valve actuator 195 adjust the opening amount of the flow control valve 200 in accordance with the hot water temperature difference DELTA T between the water supply temperature and the water return temperature, The opening amount of the flow control valve 200 is automatically controlled by the operation of the control valve 200 according to the pressure of the water supply side hot water and the pressure of the water return side water. That is, the amount of opening of the flow control valve 200 is primarily adjusted according to the temperature difference ΔT between the water supply temperature and the water return temperature, and is regulated in accordance with the water supply pressure and the water return pressure.

As described above, the automatic control heating system 100 according to the present invention is capable of heating the rooms 121 (122), 123 (124), and 124 (124) efficiently considering the heating set temperature, the room temperature, It is possible to efficiently perform the heating operation and reduce the energy waste by adjusting the opening amount of the flow control valve 200 in real time so that the hot water of the flow rate can be supplied to the rooms 121, 122, 123, , The heating cost can be reduced.

In the automatic control heating system 100 according to the present invention, when there is a pressure difference between the supplied hot water and the hot water to be returned for a reason such as a decrease in heating load, the pressure difference between the pressure of the hot water on the water supply side and the pressure difference And the opening amount of the flow control valve 200 is automatically adjusted. Therefore, the overall flow rate passing through the heating zone is appropriately adjusted to improve the operation efficiency.

In the present invention, the variable used for primarily controlling the flow control valve 200 may be the amount of heat of the hot water, not the temperature of the hot water. In this case, the water exchange thermometer 180 is changed to the heat exchange calorimeter, the hot water temperature deviation T is the hot water heat quantity deviation, and the reference hot water temperature range (DELTA Tr1 to Delta Tr2) can be changed to the reference hot water heat quantity deviation range.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention, and the scope of protection of the present invention is limited only by the matters described in the claims. Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

100: automatic control heating system 102: water supply pipe
104: Water piping 110: Water supply header
121, 122, 123, 124: room 126, 127, 128, 129: hot water pipe
130: water return header 141, 142, 143, 144: hot water supply valve
146, 147, 148, 149: Automatic control valve
151, 152, 153, 154: valve actuator
156, 157, 158, 159: Temperature regulator 160: Control device
171, 172, 173 174: Indoor thermometer
176, 177, 178, 179: Water supply thermometer 180:
190: Flow regulating valve assembly 195: Regulating valve actuator
196: valve coupling portion 197: operating rod
200: Flow control valve 211: Inlet control valve
212: flow control valve 213: bypass pipe
214: Water supply side valve body 215: Water supply side valve plug assembly
216: return-side valve body 217: return-side valve plug assembly
219: Water supply side valve seat 222: Water supply side valve plug
223: Plug shaft 233: Water return valve seat
226: Plug operation member 229: Plug
230, 260: water supply side, 2 handle wheel 231:
236: valve housing 237: bottom cover
238: upper cover 243: diaphragm
244: Disk 247:
245: Valve plug on the return side 248:
250: spring biasing part 251: adjusting key
255: spring 256: spring cover

Claims (18)

A water supply side valve body connected to the water supply pipe and having a water supply side internal flow path;
A return-side valve body connected to the return pipe and having a return-side internal passage, a return-valve seat disposed between the return-passage-side internal passage and a return-side orifice provided in the return-valve seat;
A diaphragm chamber coupled to the return-side valve body and having the return valve plug movably disposed therein; and a diaphragm chamber connected to the diaphragm chamber, A return valve plug assembly disposed in the diaphragm chamber, the diaphragm chamber having a diaphragm that divides the diaphragm chamber into an upper chamber and a lower chamber and to which the return valve plug is coupled;
A bypass pipe having one end coupled to the water supply side valve body and the other end coupled to the diaphragm housing for fluidly connecting the internal water supply side flow path of the water supply side valve body and the upper chamber of the diaphragm housing; And
And a control valve actuator disposed on the upper portion of the diaphragm housing and having an operation rod for moving the return valve plug,
Side opening of the orifice is adjusted by the movement of the return valve plug by the operating rod and the fluid of the supply-side internal flow path is introduced into the upper chamber through the bypass pipe, Wherein the return valve plug is moved when the diaphragm is elastically deformed by a pressure difference between the lower chamber and the lower chamber so that the amount of opening of the return side orifice is secondarily adjusted.
The method according to claim 1,
Side valve plug assembly,
Further comprising a spring disposed between the diaphragm housing and the valve actuator to apply an elastic force to the return valve plug in a direction away from the return-side orifice.
3. The method of claim 2,
Side valve plug assembly,
A shaft coupling member coupled to the diaphragm,
Further comprising a control shaft having a spring biasing portion disposed between the diaphragm housing and the valve actuator to be engaged with the shaft engagement member and in contact with the spring,
When the adjustment shaft is rotated, the adjustment shaft and the spring pressing portion move by the screw movement between the adjustment shaft and the shaft engagement member, and the pressing force of the spring pressing portion against the spring changes, Wherein the flow control valve assembly comprises:
The method of claim 3,
Side valve plug assembly,
Further comprising: an adjustment key inserted into the through hole provided in the longitudinal direction inside the adjustment shaft, wherein the adjustment key can not be rotated relative to the adjustment shaft and the slide linear movement is possible,
Wherein when the adjustment key is rotated, the adjustment shaft linearly moves along the adjustment key by screw movement with the shaft engagement member.
The method according to claim 1,
A water supply side valve seat disposed in the middle of the water supply side internal flow path;
A water supply side orifice provided on the water supply side valve seat; And
A water supply side valve plug movably disposed inside the water supply side valve body to open and close the water supply side orifice and a plug operation to be engaged with the water supply side valve plug so as to move the water supply side valve plug by user operation Further comprising: a water supply side valve plug assembly having an inlet and an outlet.
6. The method of claim 5,
The water supply side valve plug assembly includes:
Side valve body, the water-supply side valve plug is inserted in the middle, the plug actuating member is engaged at one end, and the other end is screwed into a shaft-engagement hole provided inside the water-supply-side valve body, Further comprising a plug shaft disposed so as to penetrate therethrough,
Wherein when the user turns the plug actuating member, the plug shaft is rotated and moved by screw movement with the water supply valve body to move the water supply valve plug.
The method according to claim 6,
The water supply side valve plug assembly includes:
A filter disposed around the water supply side orifice for filtering foreign matter contained in the fluid passing through the water supply side orifice, and
Further comprising a cap which has a through hole into which the plug operation member is inserted and is coupled to a through hole formed on one side of the water supply side valve body so as to be connected to the water supply side internal flow path to close the through hole of the water supply side valve body,
Wherein the through hole of the water supply valve body is opened when the cap is separated from the water supply valve body so that the water supply valve can be discharged to the outside through the through hole of the water supply valve body.
The method according to claim 1,
Side valve plug is provided with a plug internal flow passage through which the fluid of the return-side internal flow passage can flow, and a connection passage extending from the plug internal flow passage to the external side face of the return-
Wherein the fluid introduced into the plug internal flow path flows into the lower chamber of the diaphragm housing through a clearance between the outer surface of the return valve plug and the inner surface of the diaphragm housing through the connection passage. Assembly.
A water supply pipe for supplying heating hot water;
A hot water pipe connected to the water supply pipe for receiving hot water from the water supply pipe and embedded in a room to be heated;
A water return pipe for discharging hot water passing through the hot water pipe;
An indoor thermometer installed in the room for detecting a room temperature of the room;
A water supply thermometer installed upstream of the room in the hot water pipe including the water supply pipe, the hot water pipe, and the water return pipe for detecting the water supply temperature of the hot water supplied to the room;
A return water temperature meter installed downstream of the room in the hot water pipe to detect the temperature of the hot water that has passed through the room;
A temperature controller for setting a heating temperature of the room;
A flow control valve assembly for regulating the flow rate of the hot water that is returned through the water return pipe; And
And a controller for receiving the information on the room temperature, the water supply temperature, the water return temperature, and the set temperature of the room from the temperature controller, and controlling the flow control valve assembly,
The flow control valve assembly includes:
A water supply side valve body connected to the water supply pipe and provided with a water supply side internal flow path,
Side valve body disposed in the middle of the return-side internal passage, a return-side valve body having a return-side orifice provided in the return-valve-side valve seat,
A diaphragm chamber coupled to the return-side valve body and having the return valve plug movably disposed therein; and a diaphragm chamber connected to the diaphragm chamber, Side valve plug assembly having a diaphragm which is disposed in the diaphragm chamber and which divides the diaphragm chamber into an upper chamber and a lower chamber and to which the return valve plug is coupled,
A bypass pipe having one end coupled to the water supply side valve body and the other end coupled to the diaphragm housing for fluidly connecting the internal water supply channel of the water supply side valve body and the upper chamber of the diaphragm housing,
And a control valve actuator disposed on the upper portion of the diaphragm housing and having an operation rod for moving the return valve plug,
Wherein the control device moves the return valve plug to the regulating valve actuator when the water temperature difference between the water supply temperature and the water return temperature exceeds a preset reference temperature range of temperature difference? Side orifice, and when the hot-water temperature deviation T is less than the reference hot-water temperature deviation range (? Tr1 to? Tr2), the return valve plug is moved to the regulating valve actuator, Side inlet orifice and the pressure difference between the upper chamber and the lower chamber caused by the inflow of the fluid of the water supply side internal flow path into the upper chamber through the bypass pipe When the diaphragm is elastically deformed, the return valve plug is moved to the return side Automatic control heating amount of the opening degree of the orifice characterized in that the adjustment to the secondary.
10. The method of claim 9,
Side valve plug assembly,
Further comprising a spring disposed between the diaphragm housing and the valve actuator to apply an elastic force to the return valve plug in a direction away from the return-side orifice.
11. The method of claim 10,
Side valve plug assembly,
A shaft coupling member coupled to the diaphragm,
Further comprising a control shaft having a spring biasing portion disposed between the diaphragm housing and the valve actuator to be engaged with the shaft engagement member and in contact with the spring,
When the adjustment shaft is rotated, the adjustment shaft and the spring pressing portion move by the screw movement between the adjustment shaft and the shaft engagement member, and the pressing force of the spring pressing portion against the spring changes, Automatic controlled heating system.
12. The method of claim 11,
Side valve plug assembly,
Further comprising: an adjustment key inserted into the through hole provided in the longitudinal direction inside the adjustment shaft, wherein the adjustment key can not be rotated relative to the adjustment shaft and the slide linear movement is possible,
And when the adjustment key is rotated, the adjustment shaft linearly moves along the adjustment key by a screw movement with the shaft engagement member.
10. The method of claim 9,
The flow control valve assembly includes:
A water supply side valve seat disposed in the middle of the water supply side internal flow path,
A water supply side orifice provided in the water supply side valve seat, and
A water supply side valve plug movably disposed inside the water supply side valve body to open and close the water supply side orifice and a plug operation to be engaged with the water supply side valve plug so as to move the water supply side valve plug by user operation Further comprising a water supply side valve plug assembly having a member.
14. The method of claim 13,
The water supply side valve plug assembly includes:
Side valve body, the water-supply side valve plug is inserted in the middle, the plug actuating member is engaged at one end, and the other end is screwed into a shaft-engagement hole provided inside the water-supply-side valve body, Further comprising a plug shaft disposed so as to penetrate therethrough,
Wherein when the user turns the plug actuating member, the plug shaft is rotated and moved by screw movement with the water supply valve body to move the water supply valve plug.
15. The method of claim 14,
The water supply side valve plug assembly includes:
A filter disposed around the water supply side orifice for filtering foreign matter contained in the fluid passing through the water supply side orifice, and
Further comprising a cap which has a through hole into which the plug operation member is inserted and is coupled to a through hole formed on one side of the water supply side valve body so as to be connected to the water supply side internal flow path to close the through hole of the water supply side valve body,
Wherein when the stopper is separated from the water supply valve body, the through hole of the water supply valve body is opened so that the water filter can be discharged to the outside through the through hole of the water supply valve body.
10. The method of claim 9,
Side valve plug is provided with a plug internal flow passage through which the fluid of the return-side internal flow passage can flow, and a connection passage extending from the plug internal flow passage to the external side face of the return-
Wherein the fluid introduced into the plug inner flow path flows into the lower chamber of the diaphragm housing through a clearance between the outer surface of the return valve plug and the inner surface of the diaphragm housing through the connection passage. system.
(a) opening the opening amount of the flow control valve for controlling the flow rate of the hot water passing through the hot water pipe embedded in the room to the maximum;
(b) comparing the room temperature of the room with the heating set temperature;
(c) if the set temperature is higher than the room temperature, a hot water temperature deviation (DELTA T) between a water supply temperature of hot water supplied to the room through the hot water pipe and a hot water return temperature of the room is set as a reference hot water temperature With a temperature deviation range (? Tr1 to? Tr2); And
(d) increases the opening amount of the flow control valve when the hot water temperature deviation (DELTA T) exceeds the reference hot water temperature deviation range (DELTA Tr1 to DELTA Tr2), and the hot water temperature deviation Adjusting the amount of opening of the flow control valve by reducing the opening amount of the flow control valve when the flow rate control valve is less than the range [Delta] Tr1 to [Delta] Tr2,
The flow control valve includes:
A water supply side valve body connected to the water supply pipe and having a water supply side internal flow path;
A return-side valve body connected to the return pipe and having a return-side internal passage, a return-valve seat disposed between the return-passage-side internal passage and a return-side orifice provided in the return-valve seat;
A diaphragm chamber coupled to the return-side valve body and having the return valve plug movably disposed therein; and a diaphragm chamber connected to the diaphragm chamber, A return valve plug assembly disposed in the diaphragm chamber, the diaphragm chamber having a diaphragm that divides the diaphragm chamber into an upper chamber and a lower chamber and to which the return valve plug is coupled;
A bypass pipe having one end coupled to the water supply side valve body and the other end coupled to the diaphragm housing for fluidly connecting the internal water supply side flow path of the water supply side valve body and the upper chamber of the diaphragm housing; And
And a control valve actuator disposed on the upper portion of the diaphragm housing and having an operation rod for moving the return valve plug,
Side opening of the orifice is adjusted by the movement of the return valve plug by the operating rod and the fluid of the supply-side internal flow path is introduced into the upper chamber through the bypass pipe, Wherein the return valve plug is moved when the diaphragm is elastically deformed by the pressure difference between the lower chamber and the lower chamber, thereby adjusting the opening amount of the return side orifice secondarily.
18. The method of claim 17,
After the step (d)
And when the pressure of the hot water flowing into the hot water pipe is larger than the pressure of the hot water passing through the hot water pipe, the amount of opening of the flow control valve is decreased and the pressure of hot water flowing into the hot water pipe passes through the hot water pipe Further comprising the step of adjusting the amount of opening of the flow control valve by increasing the opening amount of the flow control valve if the pressure of the flow control valve is smaller than the pressure of the hot water to be returned.

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