KR200357270Y1 - Solenoid valve for heating. - Google Patents

Abstract

The present invention is designed to reduce the diameter of the lower side of the plunger (3), to prevent foreign matter from entering the bobbin (6), the plunger support (4) for supporting the plunger (3), the upper portion of the plunger (3) and the head (11) ) Describes the structure of heating solenoid valve 22 and its operation method, which is characterized by the formation of a waterproof membrane at the lower boundary surface or an integrally formed bobbin 6 having a grooved o-ring 13 for preventing leakage to the upper portion of the head 11. It is.

The heating solenoid valve 22 mounts a stop value 15 composed of a rectifying diode and an electrolytic capacitor directly on the coil terminal 7 to operate the controller 18 and the heating solenoid valve 22 as well as the operation noise by the AC power. The shortcomings of the current loss of direct current along the distance are also reduced.

In particular, to prevent the magnetic filter 25 from penetrating the iron in the bobbin 6 excessively, and to prevent the water hammer phenomenon when the valve is not opened or the valve is closed by the circulation pressure of the heating water, A method of stopping the circulation pump 24 or the boiler burner 21 and the circulation pump 24 together before the valve opening and closing, and controlling to delay the valve opening and closing operation until the boiler burner 21 and the circulation pump 24 are stopped. In order to facilitate the opening operation of the valve, a binary power supply method was applied in which the maximum rated voltage of the coil was applied to the initial operation, and then switched to a relatively low holding voltage after the operation.

In addition, the magnet ring 26 moves up and down the side of the plunger cap 27 as the momentary power supply of the forward / reverse voltage or the manual opening / closing pin 28 is operated up and down. As a result, the plunger is influenced by the magnetic force. (3) and the final packing (2) are also characterized in that the valve is opened and closed by vertical movement.

Description

Solenoid valve for heating. {Omitted}

The present invention relates to a solenoid valve for heating (for each room temperature control) which regulates a fluid and a method of operating the same.

Solenoid valves are more resistant to external leakage than electric valves and can be used at relatively large pressures. Currently, they are widely used in home appliances such as washing machines and water purifiers, and throughout the industry. Time noise is high and appropriate compensation is required.

In order to use the solenoid valve for heating (for controlling the temperature of each room), it is necessary to exclude the existing structure and increase the opening distance of the valve to facilitate permeation of foreign substances, and then open and close the valve directly with strong electromagnetic force. If this value is larger than this value, the valve will not open or the water hammer will occur during the closing operation.

In addition, when the operation noise is small but the distance between the solenoid valve and the controller is far, the characteristics of the DC method with the current loss problem according to the power supply distance and the AC method with the relatively small current loss but the operation noise are considered.

1 is a configuration diagram for a solenoid valve for heating and operation method.

2 is an exploded view of a solenoid valve for heating.

3 is a configuration diagram of the power supply of the solenoid valve for heating.

Figure 4 is a block diagram of a manual opening and closing portion of the solenoid valve for heating.

Fig. 5 is a configuration diagram of a solenoid valve for heating in a momentary power supply operation. Fig. 6 is an application configuration diagram of a solenoid valve for heating.

<Explanation of symbols for main parts of drawing>

1. Valve body 2: Packing 3: Plunger (spring hole type and spring fitting type)

4: Plunger support 5: Spring 6: Small bobbin 7: Coil terminal 8: Shock absorbing ring

9: Square O-ring 10: Frame 11: Head 12: Bottom plate 13: O-ring (small)

14: snap ring 15: rectifier (circuit) 16: phase control circuit 17: relay drive circuit

18: controller 19: thermostat 20: boiler 21: boiler burner

22: heating solenoid valve 23: heating water distributor 24: circulation pump 25: magnetic filter (permanent magnet)

26: magnet ring 27: plunger cap 28: manual opening and closing pin 29: spring (large)

30: Packing (for manual opening and closing) 31: O-ring 32: Manual handle body

1 is a configuration diagram for a solenoid valve for heating and an operation method.

Heating solenoid valve 22 is fitted with a square o-ring (9) for sealing between the bobbin (6) or plunger cap (27) on the valve body (1), reducing the diameter of the lower side with a snap ring (14) A plunger 3 holding the packing 2, a plunger support 4 for supporting the plunger 3, and a spring 5 for applying a force to the plunger 3 while preventing foreign matter from entering the bobbin 6; After positioning the shock absorbing ring 8 to alleviate the impact sound, a waterproof film is formed on the upper plunger 3 and the lower boundary of the head 11 as shown in FIG. As shown in b), around the bobbin (6) of the recessed o-ring (13) groove in the upper part of the head 11, the coil terminal (7), the bobbin (6) connected to the coiled coil The frame 10 and the bottom plate 12, and the head 11 generates an electromagnetic force during power supply.

First, when power is supplied to the coil terminal 7, electromagnetic force is generated around the head 11 in the bobbin 6, and the plunger 3 is pulled upward to open the valve.

On the contrary, when the power supply is stopped, electromagnetic force is lost around the head 11 in the bobbin 6, and is returned to the previous state by the spring 5.

When AC power is directly supplied to the coil terminal 7 in this operation process, the operation noise of the heating solenoid valve 22 is generated. The operation noise becomes smaller. (The LED of the stop value 15 and the operation lamp of FIG. 1 is protected by covering the molding or the cover after connecting to the coil terminal 7, and the mounting part is omitted together with the coiled shape of the coil for display. )

The heating solenoid valve 22 is resistant to foreign substances and has a low noise generation, but is not easily opened due to the circulation pressure of the heating water or a water hammer phenomenon occurs when the valve is closed.

In order to smoothly operate and utilize the heating solenoid valve 22 against the circulation pressure of the heating water and the water hammer phenomenon, the following operation method is required.

The lower part of FIG. 1 is a magnetic filter 25, a heating water distributor 23, a solenoid valve 22 for heating each room, a return water heating distributor 23, a circulation pump 24 through a boiler 20 outlet port. ), The basic structure of the temperature control of each room leading to the return port of the boiler 20 side.

The principle of temperature control of each room is based on temperature setting or opening / closing or opening / closing of the heating solenoid valve 22 with respect to time, where the controller 18 circulates before opening and closing the heating solenoid valve 22. It is important to pause the pump 24 to be freed from the influence of the circulation pressure, and in the case of the instant boiler, the boiler burner 21 and the circulation pump 24 operate together with the circulation pump 24 when the boiler burner 21 operates. ) Or to control the delay of opening and closing the valve until the boiler burner 21 and the circulation pump 24 is stopped. (Once the valve is opened and closed after the delay time, the opening time is extended, and the closing time is shortened to compensate for the delay time.)

For reference, most of the home boiler (circulating pump) has a small output before and after 100W, and as the number of open valves increases, the dispersion of circulation pressure is accelerated. Therefore, the circulation pump 24 or the boiler burner 21 is used together when opening or closing the valve above a prescribed value. There is no need to stop it.

The magnet filter 25 is made of a strong permanent magnet and is installed at a place where heating water is circulated such as a heating pipe or a heating water distributor 23 (when directly in contact with the heating water, the outside is protected by a waterproof film) to be included in the heating water. By absorbing the possible iron, it is possible to prevent the excessive penetration of iron in the bobbin (6) has a function to help the smooth operation of the plunger (3).

3 is a configuration diagram of power supply of a heating solenoid valve, and a method of smoothly operating the heating solenoid valve 22 at a circulation pressure of heating water by a power supply method.

As a power supply method, it is supplied by the phase control circuit 16 of the combination of the photo coupler and the triac according to the signal of the MCU, and through each contact point using the relay drive circuit 17. This is a method of alternately supplying the power of the dog to the com terminal.

(This power supply method uses the principle that the valve does not close even when the current is slightly weaker than the initial power supply when the valve is opened by the initial power supply, due to the characteristics of the solenoid valve. Context and context.)

3 (a) is a configuration diagram of power supply by phase control.

The circuit configuration is a phase control circuit 16 of a combination of photocoupler and triac, and the Tac and T2 terminals of the triac are connected as shown in the drawing. Then, when an alternating voltage is applied, current flows through the triac gate (GATE) to turn on ( When the phase of turn-on is out of relation with the AC voltage, the magnitude of the voltage at both ends of the load is controlled.In the initial stage, the maximum rated voltage is changed to the sustain voltage below the rated value after the valve is opened. ) Is incorporated in the controller 18, the rectifier diode is not necessary if the SCR (silicon controlled rectifier) of the half-wave control concept is replaced instead of the triac of the radio wave control.

3 (b) is a configuration diagram of power supply by a relay.

The relay 1a contact is applied to the rectifier diode, com is applied to relay 2 com, and the maximum rated voltage of the coil is applied to relay 2a contact and the holding voltage below contact rating is applied to contact b.

When the open signal of the valve is generated in the MCU, relay 1 and relay 2 are operated at the same time so that the maximum rated voltage of the relay 2a contact is supplied to the rectifier diode through com, relay 1 com, and contact a.

After that, if only relay 2 is turned off according to MCU program, it maintains the open state of the valve with the holding voltage below the rated voltage through contact b (the valve is not closed in the middle because the power supply is fast when switching contacts). When the relay 1 is turned off, the power supply is cut off and the valve closes regardless of the operation status of the relay 2.

The initial supply of the maximum rated voltage (high voltage without affecting the service life) is to facilitate the opening of the valve by forming a strong electromagnetic force, the supply time is limited to the allowable operating time range of the heating solenoid valve 22 do.

In addition, when the stop value 15 is incorporated in the controller 18, the phase control method connects the stop value 15 per one heating solenoid valve 22 as before, but the relay contact switching method has a maximum rated voltage and a rating below the rated value. Each of the maintenance voltages is rectified to operate all the solenoid valves 22 for heating in each room using only two DC power sources.

For reference, relay 1 requires the same quantity as the solenoid valve 22 for heating in each room. However, relay 2 can supply enough power through com according to the operation order of relay 1, so that only one operation is possible. .

4 is a configuration diagram of a manual opening and closing part of the solenoid valve for heating.

In the state where holes are formed in the inlet / outlet of the valve body (1), when the manual handle body (32) configured together is turned, the valve is moved by the manual opening / closing packing (30). It is opened and closed. Part of the general faucet structure is applied to the valve body (1) and the use frequency is low as it is used in an emergency.

5 is a configuration diagram of a solenoid valve for heating in a momentary power supply operation.

First, the head 11 of the solenoid valve 22 for heating is removed, and the bobbin 6 of the (poly) type having the vertical movement space of the magnet ring 26 on the upper portion thereof, the buffer ring 8 from the top, the manual The opening / closing pin 28, the magnet ring 26, the spring 29, and the plunger cap 27 are sequentially positioned. (In the instantaneous power method, the plunger 3 is spring-fitted, the spring 5 is slightly increased in size, and the plunger support 4 is slightly lower in height.)

When a constant voltage is applied to the coil terminal 7, an N pole is generated around the upper side of the magnet ring 26, and the magnet ring 26 in the N pole state is pushed by itself to approach the plunger 3 in the plunger cap 26. Done.

The plunger 3 is then pulled by the strong magnetic force of the magnet ring 26 and the valve is opened while the final packing 2 is also pulled up.

On the contrary, if a reverse voltage is applied to the coil terminal 7, an S pole is generated around the upper side of the magnet ring 26 to attract the magnet ring 26 in an N pole state, and the plunger 3 in the plunger cap 27 The force of the spring 5 returns to the previous mode and the valve closes.

The core of the valve operation by the instantaneous power source is that the cylindrical magnet ring 26 with a round hole in the center moves the plunger cap 27 up and down while stably operating the plunger 3.

This means that when the valve is opened, the plunger (3) side has a larger working area than the upper end section, so that the operation is smooth. On the contrary, when the valve is closed, the plunger (3) is not separated linearly with respect to the magnetic force. Separation at an angle means stable operation by an appropriate level of electronic force.

Since the power supply only needs to supply the spare operation time of the valve, the controller 18 has a built-in device for supplying the forward / reverse voltage to supply only the maximum rated voltage shortly, and the operation method of the circulation pump 24 and the boiler burner 21 is short. The magnet filter 24 is mounted in the same manner as described above.

In manual opening and closing, when the manual opening and closing pin 28 is operated up and down, the magnet ring 26 moves up and down the side of the plunger cap 27, and the plunger 3 and the final packing (2) according to the influence of the magnetic force. ) Also, the valve is manually opened and closed by moving up and down. (The magnet ring 26 and the manual opening / closing pin 28 are firmly fixed so as not to be separated from each other, and the manual opening / closing pin 28 moves together at the time of opening / closing the valve to easily operate the valve without an operation lamp such as an LED. For reference, when the (C) type bobbin (6), the magnet ring (26), the manual opening / closing pin (28), and the spring (29) are applied to a general solenoid valve structure used in a conventional washing machine or a water purifier, etc. It is possible to maintain the valve opening and closing state by the instantaneous power supply even without continuous power supply. FIG. 6 is an application configuration diagram of the solenoid valve for heating. The buffer ring 8, the magnet ring 26, and the manual opening and closing pin of FIG. (28) and after removing all the springs (29), the plunger support for holding the plunger (3), the plunger (3), the packing (2) is fixed around the bobbin (6) of the form (d) ( 4) Position the spring (5) and the plunger cap (27) and reduce the size of the frame (10) to the valve body (1). The operation of the circulation pump 24 and the boiler burner 21 according to the power supply, the valve opening and closing, and the installation of the magnet filter 24 are the same as those of the configuration and operation of FIG. 1 and the influence of the electromagnetic force (magnetic field). Is centered on the side rather than the upper cross section of the plunger 3.

The heating solenoid valve and the above operating method increased permeability to foreign substances, and reduced the power consumption and heat generation by using only the minimum power for the operation of the valve as well as the operation noise. We can do it, and utilization is high.

Claims (4)

Insert the square o-ring (9) into the valve body (1), reduce the diameter of the lower shaft, and then the plunger (3) fixing the packing (2), the plunger support (4) and the spring (5) to support the plunger (3). ), The buffer ring 8 is positioned around the bobbin 6, and when the power is supplied to the coil terminal 7, the head 11 and the frame 10 and the bottom plate 12 fixing the electromagnetic force are generated. The structure of the solenoid valve for heating combined together; The magnet filter 25, which is a strong permanent magnet, is mounted on the heating pipe or heating water distributor 23, and the like where the heating water is circulated, and the coil terminal 7 is connected with a stop 15 of the rectifier diode and the electrolytic capacitor combination. After that, the controller 18 temporarily stops the boiler burner 21 and the circulation pump 24 before opening or closing the heating solenoid valve 22, or until the boiler burner 21 and the circulation pump 24 are stopped. Heating solenoid valve characterized by delaying valve opening and closing operation. The method of claim 1 The head 11 of the heating solenoid valve 22 is removed, and the bobbin 6 having the vertical movement space of the magnet ring 26 on the upper portion thereof, the buffer ring 8 from above, and the manual opening / closing pin 28 are provided. The magnet ring 26, the spring 29, and the plunger cap 27 in order, and then operate the magnet ring 26 by operating the instantaneous voltage supply or the manual opening / closing pin 28 up and down. The solenoid valve for heating which the valve opens and closes by moving up and down the side of the plunger cap 27, and also the up-and-down movement of the plunger 3 and the final packing 2 by the influence of a magnetic force. The method of claim 1 Remove the head 11, place the plunger 3 with the packing 2 fixed, the plunger support 4 supporting the plunger 3, the spring 5 and the plunger cap 27 The solenoid valve for heating which inserted the said plunger cap 27 in the bobbin 6 and finally joined to the valve body 1 with the frame 10. delete