KR101039911B1 - On/Off and multistage-flow controlling apparatus and its controlling method for electromotive heating in room controller system - Google Patents

Abstract

The present invention relates to an on / off and flow rate multi-stage control apparatus for electric heating valves in each room control system, and in particular, in a known room control system, the valve driving unit of the controller responds to the output signal of the microcomputer and heats each room. It is composed of a relay for controlling the power supplied to the motor for driving the valve, the motor for driving the ball of the heating valves is installed an AC motor, the shaft of the AC motor and the embossed switch-off projection on one side or outer peripheral surface The micro switch is provided with a switch-on groove formed in succession, and a micro-switch controlled on / off by a switch-off protrusion or a switch-on groove which is positioned in response to the rotational angle of the cam when the cam is formed in close proximity to one side or the outer circumferential surface of the cam. AC power is provided between the movable terminal (C) of the relay contact switch and one terminal of the AC motor. The fixed terminal (A) and the fixed terminal (B) of the micro switch having the state where the other terminal and the movable terminal (C) of the AC motor are connected are fixed terminals (A) and fixed terminals (B) of the relay contact switch. And in series connection respectively.

Therefore, it is possible to solve the heating imbalance according to the length of the pipe and reduce the energy, and to use the low-cost AC motor without controlling the heating flow rate by using a DC motor such as an expensive stepping motor, and the number of uses of the micro switch and the cam. The installation cost of each control system as well as the electric heating valve itself can be greatly reduced, and it is possible to secure the price competitiveness by controlling the flow rate in multiple stages by the ON / OFF drive.

Angular control, heating valve, on / off and drifting multi-stage control, AC motor, cam, micro switch, relay

Description

On / Off and multistage-flow controlling apparatus and its controlling method for electromotive heating in room controller system in each room control system

The present invention relates to a multi-stage control device for on / off and drifting electric heating valves in each room control system, and more particularly, to control the amount of hot water supplied to each heating pipe through a room cone installed in each room. An AC motor is applied to the motor for adjusting the opening degree of the heating valve, and a cam for turning on / off a micro switch is installed on the shaft of the AC motor, but the structure of the cam opens the heating valve. According to the time and the closing time, it is changed to the embossed switch-off projection and the intaglio switch-on groove, so that the heating imbalance can be solved according to the length of the heating pipe in the building and the energy saving effect can be obtained. Using low cost AC motors without controlling the heating flow, as well as reducing the number of micro switches and cams used The installation cost of each control system as well as the electric heating valve itself can be greatly reduced, and the invention was invented to enable flow rate multi-stage control by ON / OFF driving.

In general, a boiler uses oil, coal, and gas as fuel to burn water or heat water using combustion heat and heat generated by supplying electricity to a heater to supply hot water to various heating facilities. It refers to a facility for boiling water. In the case of a residential boiler, it is used to supply hot water to a pipe installed in the floor of a room to heat it, or to supply hot water through a water pipe.

Recently, a single-room control system has been developed and widely used to provide heating and hot water supply to multiple rooms using a single boiler. Such a system is usually a main remote controller (hereinafter referred to as a main remote control system). It is controlled by a multi-remote control unit (hereinafter, abbreviated to a room-room lumin) consisting of a central room cone) and at least one wired or wireless sub-remote controller.

In this case, the central room cone is configured to enable the setting of various functions such as heating and heating temperature and the display of the result thereof, and the room cones, which are sub-controllers installed in other kitchens or other rooms, are used for heating the corresponding indoor space. It is configured to display the operation and settings and the result accordingly.

Therefore, the user can control the heating and heating temperature of the entire room through the central room cone, and control the heating and heating temperature of the room through the room cone of each room. There is also a function to check the status of the boiler through the central room cone and each room room cone by receiving various information through the two-way communication between the system controller and the controller of the boiler.

As a conventional individual heating control device (or system) having one central room cone and several room room cones and performing opening / closing operations for each valve and driving control of a boiler as described above, Korean Patent Publication No. 10-0196744 And 10-0438313 have been proposed in large quantities.

On the other hand, in a building using boilers and other heat sources in conjunction with each room control system, when ON / OFF control of a heating valve installed in each room or zone, the length of the heating pipe is different and the opening degree of the heating valve is the same. There are many generations of heating imbalances despite opening and closing.

Therefore, in recent years, there is a manual flow control distributor in which the installer manually presets the opening degree of the heating valve when the distributor is installed according to the length of the pipe. However, only the room with the shortest length of pipe, that is, the smallest opening, is heated. If it is turned on, the boiler is not boiled enough because the total heating flow rate is not enough, it is necessary to install a separate bypass pipe.

In addition, there are automatic flow distributors and electric heating valves that detect the return temperature or flow rate of each room to adjust the opening degree of the heating valve in real time, but most of the heating valves have a DC motor installed in the configuration of the product. The control method is complicated and the price of the product is quite expensive.

On the other hand, as a solution to solve the above-mentioned conventional problems, "fine flow rate control and noise prevention system of hot water distributor using electric valve" has been developed and presented in Korea Patent No. 10-0865948, which controls the temperature of the room. A plurality of room temperature controllers; A valve control device connected to the indoor temperature controller and controlling to provide hot water according to a signal of the indoor temperature controller; An individual boiler connected to the valve control unit to provide hot water according to an input signal of the indoor temperature controller; It is connected to the valve control device according to the temperature of the indoor temperature controller, the hot water distributor installed in the electric valve driving unit of the temperature control device to provide hot water to the place, living room, each room required according to the temperature control signal comprises a living room, distinguishing each room In the system for controlling the flow rate, a connector consisting of an open, closed, and common driver connection line on one side of the electric valve driver is connected to the connector of the valve control device for signal transmission, and the common driver connection line of the electric valve driver is In order to operate the electric valve driver, it is connected to an AC synchronous motor inside the electric valve driver, and the open and closed micro switches in the electric valve driver are electrically operated according to the operation of the open, closed driver connection line and the AC synchronous motor. Respectively connected to the ball valve or disc valve The opening and closing steps of the valve may be variably configured according to the operation of the electric valve actuator according to the control signal of the valve control device, or the opening and closing steps of the opening and closing of the disc valve may be changed. It is configured to adjust the opening position in addition to the opening and closing functions of the electric valve actuator for the flow rate adjustment to an electrically preset value.

In addition, when only one of the electric valve actuators is left open, the corresponding valve is opened (100% open), and when another valve is opened, the deployed valve is configured to return to its original position, and an input device of a temperature controller or a personal computer is provided. It is configured to set the flow rate value to a numerical sign by using the lapse of time or frequency adjustment or pulse after the open / close signal is applied to the opening position of the electric valve actuator based on the opening or closing position of the valve. It is configured to be controlled by numbers.

However, such a configuration is provided with two micro-switches for controlling the power supplied to the AC Synchronous Motor in the electric valve driver, that is, a separate micro switch for opening and a closing micro switch. And two cams for turning on and off the micro switch for closing, the volume of the electric valve driver itself is very large and the production cost of the product is high and the number of components itself is high, resulting in high failure rate. There is a problem.

The present invention has been made in order to solve such a conventional problem, a high-cost motor for controlling the opening amount of the electric heating valve for controlling the amount of hot water supplied to the heating pipe of each room through the room cone installed in each room A low-cost AC motor is installed in place of the DC motor, and a cam for turning on / off the micro switch is installed on the axis of the AC motor. By changing the shape of the projection and the intaglio switch-on groove, it is possible to solve the heating imbalance according to the length of the heating pipe in the building and to save energy, and to control the heating flow rate by using a DC motor such as an expensive stepping motor. In addition to the use of micro switches and cams, the electric heating valve itself and each room control system are reduced. Electric heating valve in each control system that can control the flow rate finely by multi-stage control by connecting the micro switch and the relay contact switch in series to drive on / off properly. It is an object of the present invention to provide a multi-stage control device and on / off and drifting.

The present invention for achieving the above object is a heat source (boiler); Several heating valves installed in heating pipes of each room to control a supply amount of heating water; Several room cones for allowing a user to set the temperature and driving time of the hot water and the heating water and the opening amount of the heating valve in each room; A communication signal processor, a microcomputer and a valve driving unit are installed between the heat source, the heating valve, and the room cones, and the heating of each room including driving control of the heat source in response to control signals transmitted from the heat source and the room cones through a bidirectional communication line. In each room control system having a controller for controlling the valve opening and closing amount,

The valve driving unit of the controller is composed of a relay for controlling the power supplied to the heating valve driving motor in each room in response to the output signal of the microcomputer, and the motor for driving the heating valve is installed an AC motor, the AC On the shaft of the motor is provided with a cam formed of a convex switch-off projection and an intaglio switch-on groove on one side or the outer circumferential surface, the switch off position is changed in response to the rotation angle of the cam near the one side or the outer peripheral surface of the cam Install a micro switch that is controlled on / off by a protrusion or a switch-on groove, and supplies AC power between the movable terminal C of the relay contact switch and one terminal of the AC motor, and operates with the other terminal of the AC motor. The fixed terminal A and the fixed terminal B of the micro switch having the state in which the terminal C is connected to the relay contact switch The fixed terminal (A) and the fixed terminal (B) is characterized in that each connected in series.

The controller may further include a previous state storage unit which stores the previous state of the heating valves under the control of the microcomputer and outputs the microcomputer upon request of the microcomputer.

In addition, the room cone is characterized in that the user is further provided with a function that allows the user to arbitrarily set the opening amount of the heating valve.

One embodiment of the method of the present invention for achieving the above object is composed of a communication signal processing unit, a microcomputer, a valve drive unit and a controller having a previous state storage unit, a heat source (boiler), several heating valves and several room cones. In the valve driver, a relay for controlling a power supply voltage supplied to an AC motor that drives a heating valve is installed, and the AC motor has a configuration in which a cam and a micro switch that is turned on and off by the cam are installed. CLAIMS 1. A method for controlling on / off of an electric heating valve of a system, comprising: detecting whether a heating " on " signal is input to any of the room cones; Detecting whether a heating valve "on" signal is input when a heating "on" signal is input to a specific room cone as a result of detecting whether the heating "on" signal is input to any one of the room cones; Driving the AC motor by outputting a valve opening signal to a relay for the heating valve from the microcomputer in the controller when the heating valve “on” signal is detected as a result of detecting whether the heating valve “on” signal is input; When the switch-off projection of the cam "offs" the micro switch by driving the AC motor, the heating valve is opened to the maximum and the driving of the AC motor is stopped; As a result of detecting whether the heating "on" signal is input in any of the above-mentioned room cones, and when there is no input of the heating "on" signal or detecting that the heating valve "on" signal is input, if there is no input of the heating valve "on" signal, Outputting an "off" signal to the relay to close the heating valve at the microcomputer in the controller; As described above, a "off" signal is output to the relay, and the movable terminal C of the relay contact switch is connected to the fixed terminal B. The movable terminal C of the micro switch is also connected to the fixed terminal B. Driving the AC motor until the switch-off projection of the cam is removed from the operation projection of the micro switch and the movable terminal C is connected to the fixed terminal A, thereby completely closing the heating valve. do.

Another embodiment of the method of the present invention for achieving the above object is composed of a communication signal processing unit, a microcomputer, a valve drive unit and a controller having a previous state storage unit, a heat source (boiler), several heating valves and several room cones. In the valve driver, a relay for controlling a power supply voltage supplied to an AC motor for driving heating valves is installed, and the AC motor has a configuration in which a cam and a micro switch operated on / off by the cam are installed. A method of controlling on / off of an electric heating valve of a system, the method comprising: detecting whether a heating "on" signal and a valve "on" signal for a corresponding heating valve are sequentially input in any one of the room cones; As a result of detecting whether the heating " on " signal and the valve " on " signal for the heating valve are sequentially inputted in any one of the room cones, if there is no heating and heating valve " on " signal, it is stored in the previous state memory. Detecting whether the previous opening degree indication A1 for the valves being closed is closed; As a result of detecting whether the previous opening degree indication value A1 is in the closed state, if the previous opening degree indication value A1 is not in the closed state, the preset valve control step m is multiplied by the time T0 taken to open the first step of the valve opening degree. Calculating a value obtained by subtracting the time T1 according to the previous opening degree indication of the valve from the valve off state to the time Ton required to drive the motor from the valve off state; Outputting a valve opening signal to a relay for the corresponding heating valve in the microcomputer to drive the AC motor for Ton time; Detecting whether the current driving time of the AC motor has reached Ton time; Stopping the driving of the AC motor when the AC motor is driven for Ton time so that the switch-off projection of the cam presses the micro switch to " off "; As the microcomputer outputs the valve closing signal to the relay to drive the AC motor, when the operation projection of the micro switch reaches the switch-on groove of the cam, the driving of the AC motor is stopped to completely close the valve.

In addition, when the heating " on " signal and the valve " on " signal for the heating valve are sequentially input to any one of the room cones, the heating and heating valves are in the " on " state. Detecting whether the current opening degree indication A2 of the heating valve for the room is in a desired state of "full open"; If the current opening degree indication (A2) of the heating valve for the room to be heated in the above state is detected that the desired state is "fully open", and if the current opening degree indication (A2) of the valve is "fully open" state in the microcomputer in the controller Driving an AC motor by outputting a valve opening signal to a relay for the heating valve; When the opening degree of the valve reaches the fully open position of the current opening degree indication A2 due to the drive of the AC motor, the driving of the AC motor is stopped when the cam switch-off projection presses the operation projection of the micro switch. It features.

In addition, as a result of detecting whether the current opening degree indication value A2 of the heating valve for the corresponding room to be heated is a state that the state is desired to be "full open", the current opening degree indication value A2 of the heating valve for the corresponding room to be heated is Detecting whether the current opening degree indication value A2 of the heating valve is larger than the previous opening degree indication value A1 stored in the previous state storage unit if the state is not desired to be "full open"; As a result of detecting whether the current opening degree indication value A2 of the heating valve is larger than the previous opening degree indication value A1 stored in the previous state storage unit, the current opening degree indication value A2 of the heating valve is the previous opening degree indication value A1. Calculating a result value obtained by subtracting the time T1 according to the current opening degree indication from the time T2 according to the current opening degree indication as the time Ton required to drive the AC motor from the valve off state to the valve on state; Outputting a valve opening signal to a relay for the heating valve at the microcomputer in the controller to drive the AC motor for the ton time calculated above; Detecting whether the current driving time of the AC motor has reached Ton time; Outputting a valve closing signal to a relay for the heating valve when the AC motor is driven for a Ton time so that the opening amount of the heating valve is kept open by the current opening degree indication value A2 by stopping driving of the AC motor; It is characterized by further performing.

On the other hand, as a result of detecting whether the present opening degree indication value A2 of the heating valve is larger than the previous opening degree indication value A1 stored in the previous state storage unit, the present opening degree indication value A2 of the heating valve for the room to be heated as a result. Is not greater than the previous opening degree indication A1, detecting whether A2 = A1; When A2 = A1 is detected as a result, the opening degree of the corresponding heating valve is opened by the current opening degree indication value (A2). Therefore, the operation of the AC motor is stopped. The motor runs from the valve off state to the valve on state by multiplying the number (m) by the time (T0) taken to open the first stage of the heating valve and subtracting the time (T1) according to the previous opening indication of the corresponding heating valve. Calculating the time taken ton (Ton); Determining whether the value of Ton calculated above is “0” to confirm whether the heating valve was previously fully opened; Determining whether the calculated Ton value is “0”, and when Ton ≠ 0, the microcomputer outputs a valve opening signal to the relay for the heating valve to drive the AC motor for Ton time; Detecting whether the current driving time of the AC motor has reached Ton time; As a result of detecting whether the calculated Ton value is "0", when Ton = 0 state or the AC motor is driven for Ton time, the cam off switch is pressed to stop the AC motor by pressing the operating protrusion of the micro switch. Outputting a valve closing signal to a relay for the corresponding heating valve at the microcomputer to drive the AC motor for a time Toff from the heating valve " on " state to the heating valve " off "state; Detecting whether the current driving time of the AC motor has reached Toff; In the above, the AC motor is driven for the Toff time so that the pressing operation of the micro switch by the switch-off protrusion of the cam is released (that is, the operating switch of the micro switch reaches the position of the on groove of the cam so that the micro switch is "on"). Stop the driving of the motor; Converting the Ton value to a T2 value and outputting a heating valve open signal to a relay for the corresponding heating valve to operate the Ac motor for Ton time; If the driving time of the motor reaches ton, the microcomputer outputs a closing signal to the relay for the corresponding heating valve and forcibly stops the driving of the motor to maintain the opening amount of the heating valve as indicated by the A2 instruction. Characterized in that.

At this time, the control stage number (m) of the heating valve is characterized in that 2-10 stages.

As described above, according to the present invention, an AC motor is used instead of a conventional DC motor to control an opening degree of an electric heating valve that controls a supply amount of hot water supplied to each heating pipe through a room cone installed in each room. In addition, a cam is installed on the shaft of the AC motor to turn on / off the micro switch, and the cam structure is changed into an embossed switch-off protrusion and an intaglio groove according to the opening time and the closing time of the heating valve. Heating imbalance can be solved according to the length and energy saving effect can be achieved, and DC motors such as expensive stepping motors can be used to control the heating flow rate without using a low-cost AC motor as well as reducing the number of micro switches and cams. Not only the valve itself but also the installation cost of each control system can be greatly reduced. The flow rate can be controlled by the multi-stage will be very useful inventions such as to ensure the relative price competitiveness.

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

Figure 1 shows the overall block diagram of the apparatus of the present invention, Figures 2 and 3 show the shape of the cam used in the present invention and the installation state of the micro switch operated by the cam, Figure 4 FIG. 5 is a perspective view illustrating a coupling state of a valve driver and a heating valve in the apparatus of the present invention. FIG.

According to the present invention, as shown in Figs. 1 to 5, a heat source (boiler) 1; Several heating valves 3 installed in the heating pipes 7 in each room to control the supply amount of the heating water; Several room cones (4) for allowing the user to set the temperature and driving time of the hot water and the heating water and the opening amount of the heating valve in each room; The communication signal processor 21, the microcomputer 22, the valve drive unit 23, the previous state memory unit 24 is provided between the heat source 1, the heating valve (3) and the room cone (4) is bidirectional A well-known angle control system having a controller (2) for controlling the opening and closing amount of each heating valve including a drive control of the heat source in response to a control signal transmitted from the heat source (1) and the room cone (4) through a communication line In this case, the valve driving unit 23 of the controller 2 is supplied to the heating valve driving motor 8 in each room in response to the output signal of the microcomputer 22 (that is, the heating valve opening signal or the closing signal). It consists of relays (RL) to control the.

In addition, the motor for driving the heating valve (3) is provided with an AC motor (8), the shaft of the AC motor (8) on one side as shown in Figure 2 or an embossed switch on the outer peripheral surface as shown in FIG. The switch 6 is provided with a cam 6 formed in succession with an off protrusion 61 and an intaglio switch-on groove 62, and the switch is shifted in response to the rotational angle of the cam in proximity to one side or the outer circumferential surface of the cam 6. The off projection 61 or the switch on groove 62 has a configuration in which the micro switch MS / W in which the actuating projection is pressed or controlled on and off by being released is pressed.

At this time, AC power is supplied between the movable terminal C of the relay RL contact switch S and one terminal of the AC motor 8 as shown in FIG. 4, and the other terminal of the AC motor 8 is movable. The fixed terminal A and the fixed terminal B of the micro switch MS / W having the state in which the terminal C is connected are connected to the fixed terminal A and the fixed terminal B of the relay contact switch S. Each has a configuration connected in series.

Therefore, the AC motor 8 has the heating valve open signal output from the microcomputer 22, so that the contact switch S of the relay RL, the operating terminal C, is connected to the fixed terminal A. The operating projection of the micro switch is located in the switch-on groove 62 of the cam 8 of the motor 8 so that the movable terminal C of the micro switch MS / W is connected to the fixed terminal A, or the microcomputer ( 22, the heating valve closing signal is output, so that the switch 8 of the motor 8 cam 6 is switched off while the contact switch S of the relay RL is connected to the fixed terminal B. The actuating projection of the micro switch is positioned on the projection 61 so that the AC voltage is supplied and driven only when the movable terminal C of the micro switch MS / W is connected to the fixed terminal B. FIG.

In addition, as the AC motor 8 is driven in the above state, the cam 6 is rotated so that the contact switch S of the relay RL and the movable terminal C are connected to the fixed terminal A. The switch-off protrusion 61 of the cam 6 of the motor 8 presses the operation protrusion of the micro switch MS / W, and the movable terminal C of the micro switch MS / W is fixed terminal B. ) Or the switch-on groove 62 of the cam 8 of the motor 8 in the state where the contact switch S of the relay RL is connected to the fixed terminal B. When the operating terminal C of the micro switch MS / W is connected to the fixed terminal A, the AC voltage supplied to the AC motor 8 is cut off because the pressed state of the operating protrusion of the micro switch is released. (8) is automatically stopped.

Of course, as described above, the switch-off protrusion 61 of the cam 8 of the motor 8 presses the operation protrusion of the micro switch MS / W so that the movable terminal C of the micro switch MS / W is fixed. (B) or the actuating projection reaches the switch-on groove 62 of the cam 8 of the motor 8 so that the movable terminal C of the micro switch MS / W is connected to the fixed terminal A. Due to the heating valve closing signal is outputted again from the microcomputer 22 in a state where the driving of the AC motor 8 is stopped, the contact switch S of the relay RL, the movable terminal C, to the fixed terminal B. When the heating valve open signal is output from the microcomputer 22 or the contact switch S of the relay RL is connected to the fixed terminal A, the AC valve 8 is alternately connected to the AC motor 8. Since the voltage is supplied, the AC motor 8 is driven again.

In addition, in the controller 2, a previous state storage unit 24 is further provided so that the microcomputer 22 performs the opening / closing control of the specific heating valve 3 in response to the request of the room cone 4. When the information on the opening and closing state of the heating valve (3) of the control under the control of the microcomputer 22 is memorized and there is information that you want to open and close to the specific stage for the heating valve (3) in the specific room cone (4) in the future At the request of the microcomputer 22, it can be output (that is, output the previous state information on the heating valve).

At this time, the room cone (4), the user arbitrarily set the opening amount of the heating valve input (that is, to open or close the heating valve (3) to any of the stages set to 2-10 stages, or close or open completely It is equipped with a function that can be set).

Referring to the on / off and flow multi-step control method of the electric heating valve using the present invention configured as described above are as follows.

First, the method of the present invention is largely divided into a method of an embodiment of simply controlling the on / off control of the electric heating valve applied in each room control system, and a method of another embodiment of controlling the flow rate in multiple stages within a predetermined number of stages. .

One embodiment of the method of the present invention for simple on / off control in the above is shown in FIG. 6, in which one of several room cones 4 in the microcomputer 22 in the controller 2 is present. Even if the heating "on" signal is detected (S1).

As a result, when the heating "on" signal is input from the specific room cone 4, it is detected (S2) whether the heating valve 3 "on" signal for the specific room is input.

As a result of the detection, when the heating valve 3 "on" signal for the specific room is input, the heating is applied to the valve driving unit 23 to open the heating valve 3 in the microcomputer 22 in the controller 2. The valve opening signal is output to the relay RL for the valve 3 to drive the AC motor 8 (S3).

At this time, the heating valve (3) that wants to be fully opened is the state that wants to be fully opened before being in a state that is already completely closed, so that the micro switch (MS) turned on / off by the cam (6) of the AC motor (8). The movable terminal C of / W is connected to the fixed terminal A in correspondence with the switch-on groove 62 of the cam 6 since the heating valve 3 has already been completely closed before.

Therefore, when the valve opening signal is output to the relay RL for the heating valve 3 to the valve driving unit 23 to open the heating valve 3 in the microcomputer 22 in the controller 2 as described above. Since the relay RL is driven to connect the movable terminal C of the contact switch S to the fixed terminal A, an AC voltage is supplied to the valve driver 5, thereby driving the valve driver 5.

As such, when the valve driver 5 is driven to reach the switch-off protrusion 61 of the cam 6 coupled to its shaft (that is, at the moment when the heating valve 3 is fully opened), the micro switch ( The operating projection of the MS / W is pressed by the switch-off projection 61 of the cam 6, and the movable terminal C of the micro switch MS / W is connected to the fixed terminal B (that is, "off"). Therefore, the driving of the valve driver 5 is automatically shut off (S4) and at the same time the heating valve 3 is completely opened (S5).

In addition, if there is no input of the heating "on" signal as a result detected in the step S1 (No in S1), or if there is no input of the "on" signal for a specific heating valve as a result of the detection in step S2 (S2). In No), the microcomputer 22 in the controller 2 outputs an “off” signal to the heating valve control relay RL in order to close the heating valve (S6).

At this time, if there is no input of the heating "on" signal, or if there is no input of the "on" signal for a particular heating valve, the heating valve (3) is already in a fully open state, and the state is desired to be fully closed. The movable terminal C of the micro switch MS / W, which is turned on / off by the cam 6 of the valve driver 5, has been previously opened in the state in which the heating valve 3 is completely open. It is a case where it is in the state connected to the fixed terminal B corresponding to the switch-off protrusion 61. FIG.

Therefore, in order to completely close the heating valve 3 in the microcomputer 22 in the controller 2 as described above, the valve driving unit 23 outputs a valve closing signal to the relay RL for the heating valve 3. When the corresponding relay RL is driven, the movable terminal C of the contact switch S is connected to the fixed terminal B so that an AC voltage is supplied to the AC motor 8 so that the AC motor 8 is driven. In this way, when the AC motor 8 is driven to reach the switch-on groove 62 of the cam 6 coupled to its shaft (that is, at the moment when the heating valve 3 is completely closed), the micro switch ( Since the actuation projection of the MS / W is released by the switch-on groove 62 of the cam 6, the movable terminal C of the micro switch MS / W is connected to the fixed terminal A. The drive of the AC motor 8 is automatically shut off (S7) and at the same time the heating valve 3 is completely closed (S8).

On the other hand, another embodiment of the method for controlling the flow rate in the multi-stage within the predetermined number of stages for the electric heating valves, as shown in Figure 7a to 7c, the number in the microcomputer 22 in the controller (2) In any one of the four room cones 4, the heating " on " signal and the valve " on " signal for the heating valve 3 are sequentially detected (S11).

As a result, if there is no heating and heating valve " on " signal (in steps S11 and S12, it is determined whether the previous opening degree indication A1 for the heating valves stored in the (No) previous state storage unit 24 is closed. Detection is made (S13).

As a result of the detection, if the previous opening degree indication value A1 is in a closed state, the heating valve 3 is already closed and no further progress is required, so the process returns to the initial state, but the previous opening degree indication value A1 is not in the closed state. The preset valve control stage (m) is multiplied by the time (T0) taken to open the first stage of the valve opening, and the result of subtracting the time (T1) according to the previous opening indication of the valve from the valve off state to the valve on state. Calculation (S14) is performed as a time Ton for driving.

In this case, the number of stages (m) is to determine whether to open and close the heating valve (3) by how many stages in the present invention was set to any one of 2-10 stages, but is not limited to this, if necessary Various design changes are possible.

For example, suppose that the control stage (m) of the heating valve (3) is set to three stages in the above, and it is assumed that the time taken for the heating valve (3) to fully close or open is 15 seconds. The time (T0) it takes for the first stage to open is 5 seconds.

By the way, in the above, if the previous opening degree indication value A1 was not completely closed and the first stage was opened, the previous opening degree indication value of the heating valve 3 (for example, one stage (that is, one third opening state)). ), The time T1 is 5 seconds, so that the time it takes for the motor to drive from the valve off state to the valve on state (Ton) = 3 X, which is the control stage 3 X opening of the heating valve, is 5 (T0). Second-5 seconds = 10 seconds, which is the time T1 according to the previous opening degree indication value (ie, first stage) of the heating valve 3.

The reason why the microcomputer 22 calculates the time Ton required to drive the motor from the valve off state to the valve on state is different from that of the servo motor because the AC motor 8 rotates only in one direction. ) If the user wants to close it completely, check whether the heating valve (3) has already been opened in a certain stage before, open the heating valve further by opening the remaining stage and open it completely until the heating valve is completely closed again. This is because the AC motor 8 must be driven.

As described above, after the microcomputer 22 calculates the time Ton required to drive the motor from the valve-off state to the valve-on state, the heating valve opening signal is transmitted to the relay RL for the heating valve 3 during the time. By outputting (S15) to drive the AC motor (8) (S16).

In the above, if the previous state of the heating valve 3 is in the state of being opened to the first stage (that is, 1/3 opening), the actuating projection of the micro switch MS / W is switched on in the cam 6. Since it is located at 1/3 of the points 62, the movable terminal C of the micro switch MS / W is connected to the fixed terminal A, and the relay RL for the heating valve. Since the contact switch (S) of the movable terminal (C) has already been opened for 1/3 of the time and the driving of the AC motor (8) has been stopped, it is in the state of being connected to the fixed terminal (B). When the valve open signal is output for the Ton time calculated in 22), the relay RL is driven to maintain the state where the movable terminal C of the contact switch S is connected to the fixed terminal A for the Ton time. The AC motor 8 is driven (S17) during that time.

At this time, when the AC motor 8 is driven for a ton time, the heating valve 3 is fully opened and at the same time the operating projection of the micro switch MS / W is slid with the switch-off projection 61 of the cam 6. Since the movable terminal C is pressed to the fixed terminal B and the power supply voltage applied to the AC motor 8 is cut off, the driving of the AC motor 8 is cut off (S18).

As described above, when the AC motor 8 is driven for Ton time and the heating valve is completely opened, the microcomputer 22 outputs the heating valve close signal to the corresponding heating valve 3 control relay RL, this time (S19). Since the contact switch (S) of the relay (RL) movable terminal (C) is connected to the fixed terminal (B), AC power is passed through the movable terminal (C) and the fixed terminal (B) of the relay contact switch (S). Since the AC motor 8 is applied to the AC motor 8 through the fixed terminal B and the movable terminal C of the micro switch MS / W, the AC motor 8 is driven again (S19).

In this way, if the cam 6 continues to rotate due to the AC motor 8 being driven again, and the switch-off projection 61 thereof is out of the operating projection of the micro switch MS / W (that is, the micro switch MS / W). When the operating projection of W) is located in the switch-on groove 62 out of the switch-off projection 61), the movable terminal C of the micro switch MS / W is connected to the fixed terminal A, so that the AC motor (8) is shut off (S20) and the heating valve 3 is in a completely closed state (S21).

On the other hand, as a result of detecting whether the heating "on" and the heating valve "on" state as described above, if the heating and heating valve are both in the "on" state (that is, both Yes in step S11 and S12) as shown in Figure 7b The current opening degree indication value of the heating valve 3 which has been delivered from the specific room cone 4 by detecting whether the current opening degree indication A2 of the heating valve 3 for the desired room is desired to be "full open" (S22). When A2 is in the "full open" state, the microcomputer 22 in the controller 2 outputs a heating valve open signal to the relay RL for the heating valve 3 to drive the AC motor 8. (S23).

At this time, since the heating valve 3 has already been opened at any stage except the "full open" state or the zero point state, the actuating projection of the micro switch MS / W is a switch of the cam 6. One of the on grooves 62 or the position at which the switch on groove 62 is started has a shape such that the movable terminal C of the micro switch MS / W is connected to the fixed terminal A. Since the current opening degree indication (A2) of the heating valve (3) desired by the user as described above is "completely open" state due to the microcomputer 22 in the controller (2) for the heating valve (3) When the heating valve open signal is output to the relay RL, the operating terminal C of the relay RL contact switch S is connected to the fixed terminal A, so that an AC voltage is supplied to the AC motor 8. The AC motor 8 is driven (S23).

As the AC motor 8 is driven in this way, the cam 6 coupled to its shaft rotates, so that the switch-off protrusion 61 of the cam 6 rotates the operation protrusion of the micro switch MS / W. At the moment of pressing, the operation terminal C of the micro switch MS / W is connected to the fixed terminal B, so that the operation of the AC motor 8 is cut off and the heating valve 3 remains fully open. (S24)

In addition, as a result of detecting whether the current opening degree indication value A2 of the heating valve 3 for the corresponding room to be heated in the above state is desired to be "full open" (S22), the current of the heating valve for the corresponding room to be heated. If the opening degree indication value A2 is not desired to be "fully open" (No in S22), the previous opening degree indication value A2 of the heating valve 3 is stored in the previous state storage section 24 ( Greater than A1) (e.g., if the heating valve control is set to three stages, the current opening degree indication (A2) is desired to open from zero stage to one stage, or from one stage to two stages or zero stage to two stages) It is made (S25).

As a result, if the present opening degree indication A2 of the said heating valve 3 is larger than the previous opening degree indication A1, the resultant value obtained by subtracting the time T1 according to the previous opening degree indication from the time T2 according to the present opening degree indication The time taken for the AC motor to drive from the off state to the valve on state (Ton) is calculated (S26). For example, the time required for controlling the heating valve 3 to be set to three stages and opening it to three stages is determined. In case of 15 seconds, the previous opening degree indication value is 0 step, but if the current opening degree indication value (A2) is 1 step, it is 5 seconds.If the previous opening degree indication value is 1 step, the current opening degree indication value is 2 step, it is 5 seconds. The case is 10 seconds.

At this time, since the opening degree indication value A1 of the heating valve 3 is, for example, at the position of 0 or 1, the operating projection of the micro switch MS / W is switched on the groove 6 of the cam 6. ), Its movable terminal (C) is in a state connected to the fixed terminal (A).

In this state, the microcomputer 22 calculated as the time taken for the AC motor to drive from the valve off state to the valve on state is the relay RL for the corresponding heating valve 3 during the ton time calculated above. Since the valve open signal is output (S27) to the movable terminal (C) of the relay (RL) contact switch (S) to maintain the state connected to the fixed terminal (A) for Ton time for the AC motor (8) It has a form that is driven for Ton time (S28).

As such, while the AC motor 8 is being driven, the microcomputer 22 detects whether the current driving time reaches Ton time (S29), and if the AC motor 8 is driven for Ton time, the corresponding heating valve. Since the valve closing signal is output (S30) to the relay (RL) for (3), the movable terminal (C) of the relay (RL) contact switch (S) is connected to the fixed terminal (B) and the corresponding heating valve ( 3), for example, at the same time 1/3 or 2/3 are opened, driving of the AC motor 8 is forcibly stopped, so that the opening amount of the corresponding heating valve is kept open by the current opening degree indication value A2 ( S31).

On the other hand, as a result of detecting whether the current opening degree indication value A2 of the heating valve 3 for the room to be heated in the above state is desired to be "full open" (S22), the current of the heating valve for the room to be heated. If the opening degree indication value A2 is not A2 ≠ "completely open" (No in S22) and not larger than the previous opening degree indication value A1 (No in S25), it is detected (S32).

As a result, when A2 = A1, the previous opening degree indication A1 for the heating valve 3 is already equal to the current opening degree indication A2, that is, the opening amount of the current heating valve 3 is already as much as the current opening degree indication A2. Since it is an open state, it maintains that state, without having to drive AC motor 8.

However, in the state A2 ≠ A1, the number of stages (m) controlling the heating valve 3 is multiplied by the time (T0) for opening the opening stage of the heating valve, and the time according to the previous opening degree indication of the corresponding heating valve (T1) from the result. ) Is calculated as the time taken to drive the motor from the valve off state to the valve on state (Ton) (S33), and then calculated to confirm whether the corresponding heating valve 3 was previously fully opened. It is determined whether the Ton value is "0" (S34).

At this time, for example, it takes 15 seconds for the number of control stages (m) of the heating valve 3 to be set to three stages and the corresponding heating valve 3 is fully opened from zero stage to three stages. However, if the time taken to open (T0) is 5 seconds and the time according to the previous opening degree indication (A1) is 15 seconds, Ton = 3 x 5-15 = 0 (seconds), but the previous opening degree indication (A1) is 2 steps ( That is, when 2/3 is open) and the corresponding time is 10 seconds, Ton = 3 x 5-10 = 5 (second).

In the above, in order to confirm whether the corresponding heating valve 3 was previously fully opened, it is determined whether the Ton value calculated above is "0", and when Ton ≠ 0 (that is, No in S34), that is, the previous state is complete. If it is not open (for example, if 2/3 is open and 1/3 is currently desired to open), the microcomputer 22 sends a valve open signal to the relay RL for the corresponding heating valve 3. Ton time (ie, 5 seconds) is output (S35) to drive the AC motor 8 for Ton time (S36).

At this time, the previous opening degree indication value A1 of the heating valve 3 has a 2/3 opening degree, so that the actuating projection of the micro switch MS / W is two-thirds of the switch-on groove 62 of the cam 6. Located at the point, its movable terminal C is in a state connected to the fixed terminal A. As shown in FIG.

In this state, the relay RL for the heating valve 3 is calculated for the ton time calculated by the microcomputer 22 calculated as the time taken for driving the AC motor from the valve off state to the valve on state. Since the valve open signal is output (S35) to the movable terminal (C) of the relay (RL) contact switch (S) to maintain the state connected to the fixed terminal (A) for Ton time for the AC motor (8) It has a form that is driven for Ton time (S36).

As described above, while the AC motor 8 is being driven, the microcomputer 22 detects whether the current driving time reaches Ton time (S37), and if the AC motor 8 is driven for Ton time, the cam 6 When the operating terminal C of the micro switch MS / W is pressed by the switch-off projection 61 of the terminal and its movable terminal C is connected to the fixed terminal B, the driving of the AC motor 8 is automatically cut off. (S38).

Thereafter, the microcomputer 22 is in a state of Ton = 0 (that is, Yes in S34), or the AC motor 8 is driven for Ton time so that the switch-off protrusion 61 of the cam 6 is microswitched (MS / W). The heating valve 3 having a state in which the driving of the AC motor 8 is stopped by pressing the operating projection of, that is, the state of Ton = 0 or, for example, previously opened 2/3, is determined by the microcomputer 22. ) Is switched off of the cam 6 which was rotated in response to the rotation of the AC motor 8 by operating the AC motor 8 for example 5 seconds to fully open (i.e., 3/3 opening). When the projection 61 presses the operating projection of the micro switch MS / W so that its movable terminal C is connected to the fixed terminal B, the driving of the AC motor 8 is automatically shut off (S38). The microcomputer 22 again sends a valve closing signal to the relay RL for the corresponding heating valve 3 so that the actuating protrusion of the micro switch MS / W has a switch of the cam 6. The time taken to pass all the areas of the off protrusion 61 (the time Toff from the heating valve "on" to the heating valve "off" state, for example, the control stage (m) of the heating valve 3). Is set to three stages and the output valve (S39) for 15 seconds if the time it takes for the heating valve (3) to fully close from zero stage to three stages (15 seconds).

Therefore, since the movable terminal C of the relay RL contact switch S is connected to the fixed terminal B, an AC voltage is applied to the micro terminal via the movable terminal C and the fixed terminal B of the contact switch S. Through the fixed terminal (B) and the movable terminal (C) of the switch (MS / W), the time taken from the heating valve "on" state to the heating valve "off" state (Toff; for example, 15 seconds) is applied. Therefore, the AC motor 8 is driven during this time (S40).

As such, when the AC motor 8 is driven for a time Toff from the heating valve " on " state to the heating valve " off " state, the microcomputer 22 is currently operating time of the AC motor 8. While detecting whether or not this Toff has been reached (S41), the AC motor 8 is driven for the Toff time as described above, and the actuating projection pressing operation of the micro switch MS / W by the switch-off projection 61 of the cam 6 is performed. This release (i.e., the operating projection of the micro switch MS / W reaches the position of the switch-on groove 62 of the cam 6, so that the movable terminal C of the micro switch MS / W is fixed to the terminal A). ), The drive of the AC motor 8 is stopped (S42), wherein the heating valve 3 is completely closed.

As such, when the heating valve 3 is opened at the previous opening degree indication value A1 by the remaining number of stages and is "completely opened", the heating valve 3 is completely closed in response to the valve closing signal, and the microcomputer 22 sets the Ton value to the T2 value. (That is, a time of 5 seconds due to opening 1/3 more) (S43), and outputs the heating valve open signal to the relay (RL) for the heating valve (3) (S44) of the relay (RL) The contact switch (S) is operated by supplying an AC voltage to the AC motor (8) for a Ton time in such a way that the movable terminal (C) is connected to the fixed terminal (A) (S45).

After that, when the time of driving of the AC motor 8 reaches Ton (Yes in S46), the microcomputer 22 outputs a closing signal to the relay RL for the corresponding heating valve 3 (S47). The driving of the motor 8 is forcibly stopped (S48) so that the opening degree of the heating valve 3 is kept open (for example, 1/3) by the A2 instruction.

As described above, the present invention uses a low-cost AC motor 5 without controlling the heating flow rate by using a DC motor such as an expensive stepping motor, as well as reducing the number of use of the micro switch (MS / W) and the cam (6). The production and installation cost of the heating valve itself and each room control system can be greatly reduced, and the flow rate is controlled by driving the two switches appropriately by connecting the micro switch (MS / W) and the relay contact switch (S) in series. It is possible to finely control the multi-stage to eliminate the heating imbalance and energy saving effect according to the length of the heating pipe in the building.

It should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

1 is an overall block diagram of an apparatus of the present invention.

2 and 3 is an exemplary view showing the shape of the cam used in the present invention and the installation state of the micro switch operated by the cam.

Figure 4 is a perspective view showing a coupling state of the valve actuator and the heating valve of the present invention device.

5 is an electrical coupling state of the controller, the valve driver and the heating valve of the present invention device.

6 is a flowchart in accordance with one embodiment of the method.

7A-7C are flowcharts in accordance with one embodiment of the present method.

Explanation of symbols on the main parts of the drawings

1: heat source (boiler) 2: controller

3: heating valve 4: room cone

5: valve driver 6: cam

7: heating piping 8: AC motor

21: communication signal processing unit 22: microcomputer

23: valve drive unit 24: previous state storage unit

61: switch off projection 62: switch on groove

RL: Relay S: Contact Switch

M S / W: Micro switch Vt: DC voltage for relay drive

Claims (9)

A heat source (boiler); Several heating valves installed in heating pipes of each room to control a supply amount of heating water; Several room cones for allowing a user to set the temperature and driving time of the hot water and the heating water and the opening amount of the heating valve in each room; A communication signal processor, a microcomputer and a valve driving unit are installed between the heat source, the heating valve, and the room cones, and the heating of each room including driving control of the heat source in response to control signals transmitted from the heat source and the room cones through a bidirectional communication line. In each room control system having a controller for controlling the valve opening and closing amount, The valve driving unit of the controller is composed of a relay for controlling the power supplied to the heating valve driving motor in each room in response to the output signal of the microcomputer, and the motor for driving the heating valve is installed an AC motor, the AC On the shaft of the motor is provided with a cam formed of a convex switch-off projection and an intaglio switch-on groove on one side or the outer circumferential surface, the switch off position is changed in response to the rotation angle of the cam near the one side or the outer peripheral surface of the cam Install a micro switch that is controlled on / off by a protrusion or a switch-on groove, and supplies AC power between the movable terminal C of the relay contact switch and one terminal of the AC motor, and operates with the other terminal of the AC motor. The fixed terminal A and the fixed terminal B of the micro switch having the state in which the terminal C is connected to the relay contact switch On / off and flow rate multi-stage control device of the electric heating valve in each room control system, characterized in that connected in series with the fixed terminal (A) and the fixed terminal (B), respectively. The method according to claim 1, In the controller, the on / off of the electric heating valve in each room control system, characterized in that it is installed under the control of the microcomputer, the previous state storage unit for storing the output state when the request of the microcomputer is stored. And multi-stage flow control. The method according to claim 1, The room cone is provided with a function that allows the user to arbitrarily set the amount of opening of the heating valve, the on / off and flow rate multi-stage control device of the electric heating valve in each room control system. The controller includes a communication signal processor, a microcomputer, a valve driver, and a previous state memory, a heat source (boiler), several heating valves, and several room cones, which are supplied to an AC motor that drives the heating valves. In the on / off control method of the electric heating valve of each room control system provided with the relay which controls a power supply voltage, and a valve driver is provided with the cam and the micro switch which is turned on / off by the said cam, Detecting whether a heating “on” signal is input to any of the room cones; Detecting whether a heating valve "on" signal is input when a heating "on" signal is input to a specific room cone as a result of detecting whether the heating "on" signal is input to any one of the room cones; Driving the AC motor by outputting a valve opening signal to a relay for the heating valve from the microcomputer in the controller when the heating valve “on” signal is detected as a result of detecting whether the heating valve “on” signal is input; When the switch-off projection of the cam "offs" the micro switch by driving the AC motor, the heating valve is opened to the maximum and the driving of the AC motor is stopped; As a result of detecting whether the heating "on" signal is input to any one of the room cones as a result of detecting no input of the heating "on" signal or a heating valve "on" signal, the heating valve "on" Outputting an “off” signal to the relay to close the heating valve in the controller if there is no signal input; As described above, a "off" signal is output to the relay, and the movable terminal C of the relay contact switch is connected to the fixed terminal B. The movable terminal C of the micro switch is also connected to the fixed terminal B. Driving the AC motor until the switch-off projection of the cam is removed from the operation projection of the micro switch and the movable terminal C is connected to the fixed terminal A, thereby completely closing the heating valve. On / off control method of the electric heating valve in each room control system. The controller includes a communication signal processor, a microcomputer, a valve driver, and a previous state memory, a heat source (boiler), several heating valves, and several room cones, which are supplied to an AC motor that drives the heating valves. In the flow rate multi-stage control method of the electric heating valve of each room control system provided with a relay for controlling the power supply voltage, the valve driver is provided with a cam and a micro switch that is turned on / off by the cam, Detecting whether a heating " on " signal and a valve " on " signal for the heating valve are sequentially input in any one of the room cones; As a result of detecting whether the heating " on " signal and the valve " on " signal for the heating valve are sequentially inputted in any one of the room cones, if there is no heating and heating valve " on " signal, it is stored in the previous state memory. Detecting whether the previous opening degree indication A1 for the valves being closed is closed; As a result of detecting whether the previous opening degree indication value A1 for the valves stored in the previous state storage unit is in the closed state, if the previous opening degree indication value A1 is not in the closed state, the valve is set to the preset valve control stage m. Multiplying the time taken to open the first stage (T0) and subtracting the time (T1) according to the previous opening degree indication of the valve from the result is calculated as the time taken to drive the motor from the valve off state to the valve on state (Ton). Steps; Outputting a valve opening signal to a relay for the corresponding heating valve in the microcomputer to drive the AC motor for Ton time; Detecting whether the current driving time of the AC motor has reached Ton time; Stopping the driving of the AC motor when the AC motor is driven for Ton time so that the switch-off projection of the cam presses the micro switch to " off "; As the microcomputer outputs the valve closing signal to the relay to drive the AC motor, when the actuating projection of the micro switch reaches the switch-on groove of the cam, the AC motor is stopped to completely close the valve. Flow rate multi-step control method of electric heating valve in control system. The method according to claim 5, As a result of detecting whether the heating " on " signal and the valve " on " signal for the heating valve are sequentially inputted in any one of the room cones, if the heating and the heating valve are both in the " on " Detecting whether the current opening degree indication A2 of the heating valve for the state is desired to be "full open"; If the current opening degree indication (A2) of the heating valve for the room to be heated in the above state is detected that the desired state is "fully open", and if the current opening degree indication (A2) of the valve is "fully open" state in the microcomputer in the controller Driving an AC motor by outputting a valve opening signal to a relay for the heating valve; When the opening degree of the valve reaches the fully open position of the current opening degree indication A2 due to the drive of the AC motor, the driving of the AC motor is stopped when the cam switch-off projection presses the operation projection of the micro switch. Flow rate multi-step control method of electric heating valve in each room control system characterized in that. The method according to claim 6, As a result of detecting whether the current opening degree indication A2 of the heating valve for the corresponding room to be heated is a state of "full opening", the current opening degree indication A2 of the heating valve for the corresponding room to be heated is "completely". Detecting whether the current opening degree indication value A2 of the heating valve is larger than the previous opening degree indication value A1 stored in the previous state storage unit if the opening state is not desired; As a result of detecting whether the current opening degree indication value A2 of the heating valve is larger than the previous opening degree indication value A1 stored in the previous state storage unit, the current opening degree indication value A2 of the heating valve is the previous opening degree indication value A1. Calculating a result value obtained by subtracting the time T1 according to the current opening degree indication from the time T2 according to the current opening degree indication as the time Ton required to drive the AC motor from the valve off state to the valve on state; Outputting a valve opening signal to a relay for the heating valve at the microcomputer in the controller to drive the AC motor for the ton time calculated above; Detecting whether the current driving time of the AC motor has reached Ton time; Outputting a valve closing signal to a relay for the heating valve when the AC motor is driven for a Ton time so that the opening amount of the heating valve is kept open by the current opening degree indication value A2 by stopping driving of the AC motor; Flowing multi-stage control method of the electric heating valve in each room control system, characterized in that further performing. The method of claim 7, As a result of detecting whether the present opening degree indication value A2 of the heating valve is larger than the previous opening degree indication value A1 stored in the previous state storage unit, the current opening degree indication value A2 of the heating valve for the room to be heated is determined. Detecting whether the state A2 = A1 if not greater than the previous opening degree indication A1; When A2 = A1 is detected as a result, the opening degree of the corresponding heating valve is opened by the current opening degree indication value (A2). Therefore, the operation of the AC motor is stopped. The motor runs from the valve off state to the valve on state by multiplying the number (m) by the time (T0) taken to open the first stage of the heating valve and subtracting the time (T1) according to the previous opening indication of the corresponding heating valve. Calculating the time taken ton (Ton); Determining whether the value of Ton calculated above is “0” to confirm whether the heating valve was previously fully opened; Determining whether the calculated Ton value is “0”, and when Ton ≠ 0, the microcomputer outputs a valve opening signal to the relay for the heating valve to drive the AC motor for Ton time; Detecting whether the current driving time of the AC motor has reached Ton time; In the above state, when the AC motor is driven for Ton time and the switch-off protrusion of the cam stops the operation of the AC motor by pressing the operating protrusion of the micro switch, the microcomputer sends a valve close signal to the relay for the heating valve. Outputting and driving the AC motor for a time Toff from the heating valve " on " state to the heating valve " off "state; Detecting whether the current driving time of the AC motor has reached Toff; Stopping the driving of the motor when the AC motor is driven for a Toff time and the operation projection pressing operation of the micro switch by the switch-off projection of the cam is released; Converting the Ton value to a T2 value and outputting a heating valve open signal to a relay for the corresponding heating valve to operate the Ac motor for Ton time; When the motor drive time reaches Ton, the microcomputer outputs a closing signal to the relay for the heating valve and forcibly stops the driving of the motor so that the opening degree of the heating valve is kept open by the A2 instruction. Flow rate multi-stage control method of the electric heating valve in each room control system, characterized in that carried out. The method according to claim 5, The control stage (m) of the heating valve is a multi-stage flow rate control method of the electric heating valve in each room control system, characterized in that 2 to 10 stages.

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