JPH0718183B2 - Drainage control method for drainage system in house - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drainage control method for a drainage system in a house such as a sink.

[Prior Art] Generally, the water once received by the sink of the sink installed in the house is drained to the lower water through a drainage pipe that communicates below the sink due to gravity. Be drained.

By the way, in order to actively discharge such domestic wastewater, in recent years, as shown in FIG.
A method of controlling drainage of a drainage system 22 provided below the 21 in communication is considered. That is, the drainage system 22 is the drain pipe 23.
With drainage pump 24 and bypass passage 25, drainage pipe
23 is a vertical pipe part in the vertical direction connected directly downstream of the sink part 21.
23A and a horizontal pipe portion 23B connected to the downstream side of the vertical pipe portion 23A.
A bypass passage 25 extending vertically in parallel with the vertical pipe portion 23A, a drainage pump 24 is provided in the horizontal pipe portion 23B, a float 26 in the bypass passage 25, and an upper limit of the float 26. And lower limit position detection sensors 27A, 27B
It has a configuration that incorporates each. Therefore, when a large amount of domestic wastewater flows down from the sink portion 21 to the vertical pipe portion 23A of the discharge pipe 23 due to gravity, a part of this water is bypassed by the bypass passage 2
Introduced to 5 to float the float 26 to the upper limit position, this state is detected by the upper limit position detection sensor 27A, from which a signal is output to the drainage pump 24 via the control means 28 to drive and actively drive it. Let it drain. When the amount of water flowing down from the sink 21 becomes small and the float 26 descends from the upper limit position and moves away from the lower limit position detection sensor 27B, the signal is cut off and the operation of the drainage pump 24 is stopped. To be done.

[Problem to be Solved by the Invention] However, in the above-described conventional control method, the foreign matter bypass passage 25 mixed in the domestic wastewater is infiltrated to allow the space between the outer peripheral surface of the float 26 and the inner peripheral surface of the bypass passage 25 to enter. There is a risk of causing a malfunction phenomenon in which a biting phenomenon intervening in an extremely narrow gap is generated, which prevents the float 26, which is a movable part, from moving up and down properly. That is, since the float 26, which is a movable part, is exposed to domestic wastewater, it has a drawback that malfunction cannot be avoided.

The present invention has been made in view of such circumstances, and does not cause a malfunction due to the influence of foreign matter mixed in domestic wastewater,
It is an object of the present invention to provide a drainage control method for a drainage control system in a residence that can be appropriately controlled.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a first invention according to the present invention provides two capacitance sensors outside a drainage pump upstream side pipe of a drainage pipe provided with a drainage pump. Installed to detect the water level in the drainage pipe, operate the drain pump by the signal output from the capacitance sensor when detecting the upper limit water level, and output from the capacitance sensor when the water level drops below the lower limit water level The operation of the drainage pump is stopped by the stop signal.

In addition, in order to achieve the above-mentioned object, the second aspect of the present invention
Of the invention, a capacitance sensor is provided outside the drainage pump upstream side pipe of the drainage pipe in which the drainage pump is installed, the water level in the drainage pipe is detected, and the signal output from the capacitance sensor at the time of this water level detection The drainage pump is operated according to the above, and when the water level drops to a level below the detected water level, the capacitance sensor outputs an excitation signal to the timer to activate the timer and stop the operation of the pump after a predetermined time has elapsed. It was done.

[Operation] According to the first invention, the two capacitance sensors provided outside the drainage pump upstream side pipe of the drainage pipe detect the upper and lower limit water levels in the drainage pipe, and operate or stop the drainage pump. be able to. That is, the operation of the drain pump and the stop of the operation can be controlled by the capacitance sensor that is not exposed to domestic waste water.

According to the second aspect of the invention, the water level in the drainage pipe is detected by the capacitance sensor provided outside the drainage pump upstream side pipe of the drainage pipe. In other words, the drainage pump must be operated to detect the water level, operate the drainage pump, and when the water level drops below the detected water level, the capacitance sensor outputs an excitation signal to the timer to activate the timer. The operation of the drainage pump can be stopped after a predetermined time has elapsed. That is, the operation of the drainage pump and the stoppage of the operation can be controlled by the electrostatic capacitance sensor and the timer that are not exposed to domestic wastewater.

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

FIG. 1 is an explanatory diagram showing an example of a system for controlling drainage by the method according to the present invention. In the figure, reference numeral 1 denotes a sink installed in a house in a flush area, and a sink portion 1A thereof.
A drainage system 2 is provided so as to communicate with the lower side of the. Drainage system 2
Is provided with a drain pipe 3, a drain pump 4, and upper and lower electrostatic capacity sensors (electrostatic capacity type switches) 5 and 6. The drainage pipe 3 is a vertical pipe portion 3A that is connected directly downstream of the sink portion 1A, and a horizontal pipe portion 3B that is connected downstream of this vertical pipe portion 3A.
The vertical pipe portion 3A is provided with a capacitance sensor 5 outside the pipe, and the horizontal pipe portion 3B is provided with a capacitance sensor 6 outside the pipe. The drainage pump 4 is provided in the horizontal pipe portion 3B on the downstream side of the capacitance sensor 6. Further, the capacitance sensors 5 and 6 are electrically connected to the control means 7 through the signal lines 5a and 6a, and the control means 7 is connected through the signal line 7a.
(More specifically, drain pump drive source).

Therefore, a large amount of domestic wastewater is drained from the sink 1A.
When the water level flows down to the upper limit water level HWL set by the electrostatic capacity sensor 5, the water level HLW is detected by the electrostatic capacity sensor 5 and the electrostatic capacity sensor 6, and the signal lines 5a and 6a are connected from here. A signal is output to the control means 7 through the control means 7, and the drain pump 4 is operated by the signal output from the control means 7 to the drain pump 4 through the signal line 7a to actively perform drainage.

Even if the water level drops below the upper limit water level HWL due to the continuation of the drainage, the capacitance sensor 6 continuously outputs a signal, so that the operation of the drainage pump 4 is continued.

Further, when the water level is lowered to a level lower than the lower limit water level LWL by continuing the operation of the drainage pump 4, the aforementioned signal output from the capacitance sensor 6 is cut off. That is, the stop signal is output, and this stop signal is output from the control means 7 to the drainage pump 4 to stop the drainage pump.

As described above, the capacitance sensors 5 provided outside the vertical pipe portion 3A and the horizontal pipe portion 3B of the drainage pipe 3 in the drainage system 2, respectively.
Since the water level is detected by 6 to control the drainage, there is no possibility that the electrostatic capacitance sensors 5 and 6 malfunction due to the influence of foreign matter mixed in the domestic wastewater. Therefore, it is possible to appropriately control for a long period of time.

FIG. 2 shows a second embodiment of the present invention, in which the same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In Fig. 2, the vertical pipe portion 3A in the drain pipe 3 of the drainage system 2
An electrostatic capacitance sensor 5 is provided outside the pipe of, and the electrostatic capacitance sensor 5 detects the upper limit water level HWL in the drainage system 2,
From this, a signal is output to the control means 7 through the signal line 5a, and the drainage pump 4 is operated by the signal output from the control means 7 to the drainage pump 4 through the signal line 7a to actively perform drainage.

When the water level drops to a level below the detected water level due to the continuation of the drainage, the aforementioned signal output from the electrostatic capacity sensor 5 is cut off, and the timer 8 is passed from the control means 7 through the signal line 7x. An excitation signal is output to the timer 8 and the timer 8 is activated. Then, after a lapse of a predetermined time set by the timer 8, that is, after a lapse of time when it is estimated that most of the water below the upper limit water level HWL will be drained by the operation of the drainage pump 4, the signal output from the timer 8 The normally closed contact 8b of the timer 8 provided on the signal line 7a is opened to stop the drainage pump.

In this way, the upper limit water level HWL is detected by the capacitance sensor 5 provided outside the vertical pipe portion 3A of the drainage pipe 3 in the drainage system 2, and the drainage pump 4 is operated, whereby the water level is below the detected water level. Since the timer 8 is actuated when the level is lowered, there is no risk of malfunction of the capacitance sensor 5 due to the influence of foreign matter mixed in the domestic wastewater. Therefore, it is possible to appropriately control for a long period of time.

[Effects of the Invention] Since the present invention is configured as described above, the following effects are achieved.

According to the control method of claim (1), two capacitance sensors are provided outside the drainage pump upstream side pipe of the drainage pipe in which the drainage pump is interposed to detect the water level in the drainage pipe, and electrostatically detect the upper limit water level. The signal output from the capacitance sensor operates the drainage pump, and the stop signal output from the capacitance sensor when the water level drops below the lower limit water level,
Since the operation of the drainage pump is stopped, there is no risk of malfunction of the capacitance sensor due to the influence of foreign matter mixed in the domestic wastewater. Therefore, it is possible to appropriately control for a long period of time.

Further, according to the control method of claim (2), a capacitance sensor is provided outside the drainage pump upstream side pipe of the drainage pipe in which the drainage pump is interposed to detect the water level in the drainage pipe. The drainage pump is operated by the signal output from the capacitance sensor, and when the water level drops to a level lower than the detected water, the capacitance sensor outputs an excitation signal to the timer to activate the timer, and after a predetermined time has elapsed, the pump is pumped. Since the operation is stopped, there is no risk of malfunction of the capacitance sensor due to the influence of foreign matter mixed in the domestic wastewater. Therefore, it is possible to appropriately control for a long period of time.

[Brief description of drawings]

FIG. 1 is a system explanatory diagram showing a first embodiment of a control method according to the present invention, FIG. 2 is a system explanatory diagram of the same second embodiment, and FIG. 3 is a system explanatory diagram of a conventional example. 1 …… Washing area 2 …… Drainage system 3 …… Drain pipe 4 …… Drain pump 5,6 …… Capacitance sensor 8 …… Timer

Claims (2)

[Claims] 1. A drainage control method for a drainage system communicating with a lower part of a flushing area installed in a house, wherein two capacitance sensors are provided outside a drainage pump upstream side pipe of a drainage pipe in which a drainage pump is provided. Is installed to detect the water level in the drainage pipe, the drainage pump is operated by the signal output from the capacitance sensor when the upper limit water level is detected, and when the water level drops below the lower limit water level, the capacitance sensor outputs A drainage control method for a drainage system in a house, wherein the drainage pump is stopped by an output stop signal. 2. A drainage control method for a drainage system communicating below a flushing area installed in a house, wherein a capacitance sensor is provided outside a drainage pump upstream side pipe of a drainage pipe in which a drainage pump is interposed. Detects the water level in the drainage pipe, operates the drainage pump by the signal output from the capacitance sensor at the time of detecting the water level, and when the water level drops to a level below the detected water level, a timer is activated from the capacitance sensor. A drainage control method for a drainage system in a house, comprising the step of outputting an excitation signal to a timer to activate a timer, and stopping the operation of the pump after a lapse of a predetermined time.