JPH077659Y2 - Remote-controlled automatic antifreeze - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remotely operated antifreezing plug, and more particularly to a spindle of the antifreezing plug having a water supply position and a draining / stopping position as well as a water supply position. The present invention relates to an antifreeze plug that can be placed in a water stop position where only water is stopped without being removed.

Conventional technology and its problems Conventionally, in order to prevent freezing of water pipes in cold regions,
An antifreeze plug connected to a water pipe is used. In addition to the manual type inside these antifreeze stoppers, a temperature sensor is installed at the rising part of the water pipe, and when the temperature sensor detects that the temperature of the water at the rising part is below the set temperature. , There is an automatic type that activates the actuator to move the spindle of the antifreeze plug and drains water at the rising part.

In these antifreeze plugs, the spindle has a water passage position that allows water to flow from the upstream side to the downstream side, and a drainage position that stops water passage from the upstream side to the downstream side and drains water at the rising portion. It is designed to take two positions. In this case, in the manual type, the intake valve is not necessarily required because water can be drained by opening the cullan, but in the automatic type, the intake valve is installed at an appropriate position on the rising portion of the water pipe. There is a need. This intake valve is designed to open the valve at the time of draining water to intake air into the water pipe, and at the time of passing water, the valve body is pressed against the valve seat by the water pressure to prevent the outflow of water from this valve. For this reason, the valve body or the valve seat may get wet, and the water adhering to the valve body or the valve seat may freeze, and the intake valve may not operate normally. As a result, the water temperature decreases, and even if an actuator is operated by a signal from the sensor, water may not be drained because intake is not performed, and the water pipe may freeze.

Means for Solving the Problems The present invention has been made to solve the above problems, and further to provide an antifreezing stopper which also functions as a conventionally used caran. In addition to the water position and the drainage / stoppage position, it is possible to take a stoppage position that stops water flow from the upstream side to the downstream side but does not drain water.
This eliminates the need for a curran conventionally attached to the downstream end of a water pipe and the intake valve conventionally required for draining water.

In order to achieve such an object, the present invention is configured as follows. That is, the antifreeze body of the remote-controlled automatic antifreeze according to the present invention comprises an inlet, an outlet, and an outlet, and a first communication path between the inlet and the outlet, and an outlet. A cylinder-shaped main body having a second communication passage formed between the discharge port and the discharge port; and liquid-tightly slidable sealing portions on the inner circumferences of the first and second communication passages, respectively. And a spindle for vertically controlling the communication between the inflow port, the outflow port, and the drainage port by selectively moving or closing the first and second communication passages by vertically moving in the interior. In Although,
It is configured so that a water passing position, a water stopping position, and a water draining / water stopping position can be taken. Further, the remote control automatic antifreeze of the present application further includes an actuator for operating the spindle of the antifreeze main body, a control circuit for controlling the operation of the actuator, and the control circuit for detecting the water temperature at the rising portion of the water pipe. A temperature sensor to be input to the control circuit, an external operation unit for inputting an operation signal to the control circuit, and position detection means for detecting the position of the spindle of the antifreeze body and inputting the signal to the control circuit. ing. The control circuit stores at least the water passing position, the water stopping position, and storage means for storing three position signals corresponding to the water draining / water stopping position, and at least the water passing position by operating the external operation unit. The changing means for changing the corresponding position signal, and the at least 3 based on the input from the temperature sensor and the external operation unit.
And a comparing means for selecting one of the two position signals as a reference signal and comparing the selected reference signal with the signal from the position detecting means. The spindle is operated and positioned at a position corresponding to the position signal selected as the reference signal.

An embodiment of the present invention will be described below with reference to the drawings.

"Embodiment" FIG. 1 is a schematic view of a case where a remote-controlled automatic antifreezing plug according to the present invention is installed. Reference numeral 1 is an antifreezing plug provided with an actuator or the like, which will be described later, and is provided by being connected to a water pipe.
A temperature sensor 3 is provided at the rising portion 2 of the water pipe to detect the water temperature at the rising portion. Reference numeral 5 is a control panel provided with an operation unit 6 including switches for operating the antifreezing plug and a control circuit 7. 4 is the tap, but as you can see from the figure, the water that is conventionally used,
There is no calan to stop the water. Further, the intake valve that has been used together with the antifreeze plug is not provided.

FIG. 2 is a block diagram showing the structure of the antifreezing plug in this embodiment, and FIGS. 3 to 5 show the antifreezing plug at the water passing position, the water stopping position, and the water draining / water stopping position, respectively. Shows.

The antifreeze plug 1 is provided with a plug main body 11 at a lower portion thereof, and the plug main body 11 is generally downstream via an upstream chamber 12, a downstream chamber 13, a communication passage 14 for communicating the upstream and downstream chambers 12, 13 and a drainage communication passage 15. It consists of a drainage chamber 16 communicating with the chamber. A check valve 17 is attached to the drainage chamber 16. An actuator 20 is attached to the upper portion of the antifreezing plug, and a motor 21 whose rotation is controlled as will be described later is fixed on a support base 22 so as to form a part of the actuator 20. The output shaft 23 of the motor 21 is screw-engaged with the intermediate connecting body 24 as shown in the drawing, and the intermediate connecting body 24 is prevented from rotating by the guide rod 26 projecting from the case 25 of the actuator 20. As the motor 21 rotates, the intermediate connector 24 moves up and down. A spindle 27 is coupled to the lower end of the intermediate coupling body 24, and the spindle 27 is connected to the communication passage 14
The drainage communication passage 15 extends downward. The spindle 27 has a first large diameter portion 27a for opening / closing the communication passage 14 having a seal body 28 on its outer peripheral portion and a first large diameter portion 27a for opening / closing the drainage communication passage 15 having a seal body 29 on its outer peripheral portion. 2 large diameter part
It is equipped with 27b.

A variable resistor 32 is provided upright on the support base 22, and a contact 33 provided on the intermediate coupling body 24 together constitutes a position detector 31 of the spindle 27. That is, when the motor 21 of the actuator 20 rotates and the spindle 27 moves up and down, the contactor
33 also moves up and down to change the resistance value of the variable resistor 32, and the signal is sent to the control circuit 7 described above.

Next, the operation of the antifreezing plug in this embodiment will be described.

The control circuit 7 stores the resistance value of the variable resistor 32 corresponding to each position of water passage, water stoppage, and water drainage / water stoppage of the spindle 27. In FIG. 3, the spindle 27 is in the water passage position, and water flows out from the faucet 4 through the upstream chamber 12, the downstream chamber 13, and the rising portion 2 of the water pipe. At this time, the signal sent from the position detector 31 to the control circuit 7 matches the value corresponding to the water passage position held in the control circuit 7, the motor 21 is stopped, and the spindle 27 is shown in the figure. Stays in the position.

When the water stop button 8 of the operation unit 6 is pressed in this state, the resistance value corresponding to the water stop position is selected as the comparison reference value in the control circuit 7 based on the signal, and this value is output from the position detector 31. Will be compared to the signal. Based on this comparison, the rotation direction of the motor 21, that is, the movement direction of the spindle 27 is first determined, and the control circuit 7 sends a signal to the actuator 20 based on the determination to drive the motor 21. Spindle 27
At the position shown in FIG. 4, that is, the first large diameter portion 27a of the spindle 27 is fitted in the communication passage 14, the first large diameter portion 27b is fitted in the drainage communication passage 15, and the respective seal bodies 28, When the communication passages 14 and 15 are closed by 29, the output signal of the position detector 31 matches the reference value previously selected by the control circuit 7,
As a result, the control circuit 7 sends a stop signal to the actuator 20. In this case, communication between the upstream chamber 12 and the downstream chamber 13 and the downstream chamber 13
The drainage chamber 16 is disconnected from the communication.

Next, when the water passing button 9 of the operation unit 6 is pressed to try to pass water again, the resistance value corresponding to the water passing position is selected as the comparison reference value in the control circuit 7, and the output signal from the position detector 31 is selected. Be compared. Then, the rotation direction of the motor 21 is determined, and the motor 21 is driven in that direction. When the spindle reaches the position shown in FIG. 3 again, the motor 21 is stopped.

A flow rate control dial 10 is also provided in the operation unit.
By operating the flow rate control dial 10, the resistance value stored in the control circuit 7 and corresponding to the water passage position can be rewritten. If this value is rewritten, the position of the spindle 27 at the water passing position will be different from that before rewriting, and the flow rate during water passing can be adjusted.

Next, the water draining operation will be described. It is assumed that the antifreeze plug 1 is at the water stop position shown in FIG. As described above, the temperature sensor 3 is provided at the rising portion 2 of the water pipe, and constantly detects the water temperature of that portion and sends it to the control circuit as an output signal. When the temperature sensor 3 detects that the water temperature in the rising part 2 of the water pipe is below a certain freezing temperature for a certain period of time, it is used as a comparison reference value in the control circuit 7 for draining / stopping water of the spindle. The resistance value corresponding to the position is selected. After that, the spindle 27 reaches the water draining / water stopping position shown in FIG. 5 through the same process as described above, and then stops. In this state, the communication between the upstream chamber 12 and the downstream chamber 13 is blocked by the seal body 28 of the first large diameter portion 27a of the spindle 27, and the downstream chamber 13 and the drainage chamber 16 are
Since the large diameter portion 27b passes through the drainage communication passage 15, the communication is opened. Therefore, the water in the rising part 2 is
It is discharged from the check valve 17 through the downstream chamber 13 and the drainage chamber 16.

Although not shown, an alarm controlled by the control circuit can be provided to sound the alarm when the temperature sensor 3 first detects that the water temperature becomes the freezing temperature or lower. . At this time, if the water flow button 9 is pressed to allow a small amount of water to flow and the upstream side water having a high water temperature is introduced into the rising portion 2, the above-described water draining operation is not performed, and unnecessary water draining is performed during the daytime. You don't have to. Of course, it is also possible not to activate the alarm at bedtime.

In addition, a water detection sensor that detects the presence of water together with the temperature sensor 3 is provided in the rising portion 2, and after a certain time has elapsed after the control circuit 7 sends a water draining signal to the actuator 20, the water in the rising portion 2 is If it exists, that is, if the draining operation is not normally performed, an alarm can be activated or an abnormal lamp can be turned on.

Furthermore, it is also possible to attach a lamp indicating that the antifreeze plug is at the water passing position, the water stopping position, and the water draining position, respectively.

Effect of the Invention With the configuration as described above in the present invention, it is possible to perform water passage, water stoppage and automatic water draining with a single antifreeze plug, and it is not necessary to use the current runner and intake valve used in the faucet part. Can be

Further, in the present invention, the communication between the inflow port, the outflow port, and the drainage port can be switched only by the vertical movement of the spindle. Therefore, the configuration for the switching is simple, and the position for detecting the position is detected. One detection means is enough. Further, since the position detecting means includes the variable resistor and the contact paper corresponding to the variable resistor, and the position signal corresponding to at least the water passage position can be changed from the external operation unit, the flow rate at the time of water passage is linearly changed. It is adjustable and very convenient to use.

[Brief description of drawings]

FIG. 1 is a schematic view of the case where the antifreezing plug according to the present invention is installed,
FIG. 2 is a block diagram showing the structure of an antifreeze plug according to the present invention,
3 to 5 are partially cutaway sectional views showing the antifreezing plugs at the water passing position, the water stopping position and the water draining position, respectively. 1 ... Antifreezing plug body, 2 ... Water pipe rising part 3 ... Temperature sensor, 6 ... Operating part 7 ... Control circuit, 20 ... Actuator 31 ... Position detector

Claims (1)

[Scope of utility model registration request] 1. A first communication passage comprising an inflow port, an outflow port and a discharge port, a first communication path between the inflow port and the outflow port, and a second communication path between the outflow port and the discharge port. A cylindrical body having a passage formed therein, and a sealing portion slidable in a liquid-tight manner on the inner circumferences of the first and second communication passages, respectively, and vertically moving in the body to selectively remove the A spindle for controlling communication between the inflow port, the outflow port, and the drain port by sealing or opening the first and second communication paths, a water passage position, a water stop position, and a water drainage position. -Anti-freezing plug body configured to take a water stop position and connected to a water pipe, an actuator that operates the spindle, a control circuit that controls the operation of the actuator, and a rising portion of the water pipe. A temperature sensor that detects the water temperature and inputs it to the control circuit, and an operation signal to the control circuit. An external operation unit for inputting, and a position detection unit for detecting the position of the spindle and inputting a signal to the control circuit, wherein the control circuit is at least the water passage position and the water stop position, Storage means for storing three position signals corresponding to the water draining / stopping position, changing means for changing at least the position signal corresponding to the water passage position by operating the external operation portion, the temperature sensor and the outside. A comparison unit that selects one of the at least three position signals as a reference signal based on an input from the operation unit, and compares the selected reference signal with a signal from the position detection unit. The actuator is operated according to the comparison result of the comparison means, and the spindle is positioned at a position corresponding to the position signal selected as the reference signal. Operation Auto non-Kosen.