KR20210004207A - Module for Draining the Piping and System for Draining the Piping - Google Patents

Abstract

The present invention relates to a module for draining residual water in pipes, which comprises: a water discharge connection unit (140) formed to be connected to a faucet unit (30) which discharges water; a main pipe (130) connected to the water discharge connection unit (140) to communicate with a water inflow connection unit (110) and a drain connection unit (170), and receives raw water through the water inflow connection unit (110), and in which the drain connection unit (170) is connected to a drain pipe and forms a water discharge flow path along with the water discharge connection unit (140); a pressure sensing unit (150) which detects changes in the pressure of the water discharge flow path and outputs an electric signal when there is a change in the pressure; and a control unit (160) which receives the electric signal outputted from the pressure sensing unit (150). The water inflow connection unit (110) can selectively communicate with the water discharge flow path or the drain connection unit (170) by the control unit (160). The present invention aims to provide a module for draining residual water in pipes and a system for draining residual water in pipes including the same, which are able to provide clean water to a user.

Description

Pipe residual water drain module and pipe residual water drain system including the same {Module for Draining the Piping and System for Draining the Piping}

The present invention is a pipe residual water drain module and a pipe residual water drain system including the same. More specifically, by specifically operating the valve provided in the pipe by using the output signal of the high-pressure cut-off switch (HPS) immediately after opening or immediately after the outlet valve provided in the faucet part, drains residual water in the pipe, and It is a technology that prevents contamination inside.

A water purifier allows drinking water to be consumed by passing water from a general tap water through a multi-stage filter. Generally, purified drinking water automatically flows into cold water tanks and hot water tanks to heat or cool the water stored in each tank. When the user manipulates the cold water outlet or hot water outlet, the cold water or hot water in the standby state is discharged.

In recent years, there is an increasing demand for direct water purifiers in which drinking water is not stored separately in cold/hot water tanks, but is discharged as drinking water is immediately purified when using a water purifier.

These direct water purifiers do not use a separate tank for storing cold and hot water, which is advantageous for miniaturization of the water purifier, and since purified clean water is immediately discharged, there is an advantage of high safety. A technology for instantaneously cooling or heating drinking water is required.

In particular, recently, various filters have been installed in the storage space under the sink, and a nozzle (faucet) connected to the filter has been installed at the top of the sink while one-sided water supply is connected to the filter. Under-sink type water purifier products that are directly discharged in the same form are on the market.

The undersink type water purifier can increase the space utilization of the kitchen by utilizing the storage space under the sink, and it is easy to install a general faucet and a faucet for cooking water separately connected thereto.

However, in order to install this water purifier in an undersink type, a rather long flow path is used. When the faucet is opened and closed again, the water passing through the filter is filled on the long flow path. It is a structure in which full water flows out. If the interval of use is quite long, the water inside the flow path is stagnated for a long time, which may contaminate the pipe due to various causes, which may pose a fatal threat to user hygiene.

As a prior art, Korean Patent Publication No. 10-2012-0006103 of the present applicant is disclosed. As a water outlet structure capable of preventing the discharge of residual water, the air contained in the water can be collected in one place, and the air contained in the water can flow in the form of bubbles so that the surface tension of the water is not broken, and the residual water is discharged to the outside. It is a technology that prevents it.

However, the prior art also does not disclose a technique for preventing stagnation of residual water for a long time in a long flow path, which is the aforementioned problem.

(Patent Document 1) Korean Laid-Open Patent No. 10-2012-0006103

The present invention was conceived to solve the problems of the prior art described above, irrespective of the frequency of use of the faucet part by the user, by draining stagnant water in the flow path, it prevents contamination of the flow path and cleans the user. I would like to propose a technology for residual water piping that can provide water.

In particular, when the water purifier is of an undersinker type, the flow path may be relatively long, and the amount of water that may stagnate in the flow path is large, and thus, a pipe residual water technology capable of removing stagnant water in the flow path is proposed.

The present invention for solving the above problems, as a pipe residual water drain module, the water outlet connection portion 140 formed to be connected to the faucet portion 30 for performing water outlet; As the main pipe 130 connected to the water outlet connection part 140 and in communication with the water inlet connection part 110 and the drain connection part 170, raw water is supplied through the inlet connection part 110, and the drain connection part 170 Is formed to be connected to the drain pipe, the main pipe 130 forming a water outlet channel together with the water outlet connection part 140; A pressure sensing unit 150 that senses a pressure change in the water outlet passage and outputs an electrical signal when the pressure changes; And a control unit 160 for receiving an electrical signal output from the pressure sensing unit 150. Including, and the control unit 160, the inlet connection 110 provides a pipe residual water drain module to selectively communicate with the water outlet passage or the drain connection unit 170.

In addition, the faucet unit 30 is provided with a water outlet valve 32 for controlling water outlet, and when the outlet valve 32 is opened, a pressure change in the outlet passage is sensed by the pressure sensing unit 150 And, by the control unit 160, the receiving connection unit 110 and the drain connection unit 170 may be in communication.

In addition, a two-way valve 120 is coupled to an end side of the inlet connection part 110, and the water outlet connection part 140 and the drain connection part 170 are connected to the two-way valve 120, and the control unit 160 May control the operation of the 2-way valve 120 through an electrical signal.

In addition, the control unit 160 includes a timer, by means of the timer, the two-way valve 120 communicates the receiving connection unit 110 and the drain connection unit 170 only for a preset time, and When the set time elapses, the inlet connection unit 110 and the water outlet connection unit 140 may be communicated.

In addition, the control unit 160 may control the opening and closing operation of the two-way valve 120 through a pressure change value sensed by the pressure sensing unit 150.

In addition, the pressure sensing unit 150 may be a high pressure switch (HPS).

In addition, a water outlet passage valve 132 is provided on the side of the main pipe 130, a drain connection valve 172 is provided on the side of the drain connection part 170, and the control unit 160 includes the water outlet passage valve 132 and The drain connection valve 170 may be selectively opened and closed.

In addition, the present invention is a method of draining residual water in a pipe using a pipe residual water drain module, wherein the pipe residual water drain module includes: a water outlet connection unit 140; And a main pipe 130 forming a water outlet passage together with the water outlet connection part 140; Including, (a) the step of opening the water outlet valve 32 provided in the faucet unit 30 where water outlet is performed to change the pressure of the outlet passage (S110); (b) a step in which a pressure change in the outlet passage is sensed by the pressure sensing unit 150, and an electrical signal output from the pressure sensing unit 150 is transmitted to the control unit 160 (S120); (c) as the step of controlling the two-way valve 120 by the control unit 160, the two-way valve 120, the inlet connection portion 110 to which raw water is supplied to the water outlet connection portion 140; And a drain connection part 170 connected to the drain pipe. And selectively communicating with and allowing the two-way valve 120 to communicate with the inlet connection unit 110 and the drain connection unit 170 for a preset time period to discharge water through the drain pipe (S130); And (d) after the preset time has elapsed, by the control unit 160, the two-way valve 120 communicates the inlet connection unit 110 and the water outlet connection unit 140 to the faucet unit 30 ) Through the step (S140); It provides a method of draining residual water in the pipe including a.

In addition, the present invention is a pipe residual water drain system including a pipe residual water drain module, the raw water supply unit 10; A purification filter unit 20; Pipe residual water drain module 200; A main pipe connecting the purification filter unit 20 and the pipe residual water drain module 200; A drain pipe branching from the main pipe; And a first valve (22) provided between the purification filter unit 20 and a branch point of the drain pipe, and a second valve (24) provided in the drain pipe. Including, the pipe residual water drain module 200, a water outlet connection portion 240 formed to be connected to the faucet portion 30 for performing water outlet; An inlet connection part 210 connected to the main pipe to supply raw water; One side is connected to the inlet connection part 210, the other side is connected to the outlet connection part 240, and the main pipe forming a water outlet channel together with the inlet connection part 210 and the outlet connection part 240; A pressure sensing unit 250 that senses a pressure change in the water outlet passage and outputs an electrical signal when the pressure changes;

A check fitting unit 280 for controlling communication with the water outlet passage and outside air; And

A control unit 260 for receiving the electrical signal output from the pressure sensing unit 250 and adjusting the check fitting unit 280; Including, the control unit 260, the check fitting unit 280, the first valve 22 and the second valve 24 to control the remaining water to the drain pipe, providing a pipe residual water drain system do.

In addition, when the control unit 260 receives an electric signal from the pressure sensing unit 250, the first valve 22 is closed and the second valve 24 is open, and the check The fitting part 280 may be operated.

In addition, the check fitting 280 is an air pump, and when the air pump is operated by the control unit 260, residual water in the main pipe can be discharged to the drain pipe by air discharged from the air pump. have.

In addition, the check fitting part 280 may further include a filter member.

In addition, the present invention is a method of draining residual water in a pipe using the above-described pipe residual water drain system, wherein (a) the water outlet valve 32 provided in the faucet part 30 is closed to change the pressure in the water outlet passage. Step S210; (b) detecting a pressure change in the water outlet passage by the pressure sensing unit 250 and transmitting an electrical signal to the control unit 260 (S220); And (c) by the control unit 260, when the first valve 22 is closed and the second valve 24 is open, the check fitting unit 280 is operated according to a predetermined condition. A step of discharging residual water in the main pipe to the drain pipe (S230); It provides a method of draining residual water in the pipe including a.

In addition, the predetermined condition of step (c) is a preset time, the check fitting unit 280 is operated only for the preset time, and after step (c), (d) the pressure sensing unit 250 ) Is deactivated, the first valve 22 is opened, and the second valve 24 is closed (S240); It may further include.

The present invention as described above has the following effects.

The present invention senses the pressure change inside the pipe residual water drain module through the pressure sensor unit, and changes the flow path direction through transmission of an electrical signal, so that the remaining water inside the pipe can be efficiently discharged, and immediately after use of the faucet unit and the end of use. By removing the residual water immediately after the operation, it has the effect of providing clean water to the user.

In addition, since the present invention is used in a modularized state, it is not necessary to individually install each of the components in an undersinker type water purifier, and see tubing to which raw water is supplied, tubing to discharge drain water, and tubing connected to the faucet unit. As long as it is fastened to the invention, it can be easily used, and user convenience is increased.

1 is a schematic schematic diagram of an electric range that is an example to which the present inventors pipe residual water drain module is applied.
2 is a block diagram of a first embodiment of a pipe residual water drain module according to the present invention.
FIG. 3 is a block diagram illustrating a state in which water is discharged to a faucet portion in the state of FIG. 2.
4 is a block diagram showing a state in which water is drained to a drain pipe in the state of FIG. 2.
5 is a flowchart of a method of draining residual water in a pipe using the first embodiment of the pipe residual water drain module according to the present invention.
6 is a block diagram of a modified example of the first embodiment of the pipe residual water drain module according to the present invention.
7 is a block diagram of a piping residual water drain system to which a second embodiment of the piping residual water drain module according to the present invention is applied.
FIG. 8 is a block diagram illustrating a state in which water is discharged to a faucet portion in the state of FIG. 7.
9 is a block diagram showing a state in which the drain pipe is drained in the state of FIG. 7.
10 is a flow chart of a method of draining residual water in a pipe using a pipe residual water drain system to which the second embodiment of the pipe residual water drain module according to the present invention is applied.

Hereinafter, a pipe residual water drain module and a pipe residual water drain system according to the present invention will be described with reference to the drawings. Here, the present invention is described on the premise that it is applied to a water purifier, but it is stated that it may be connected to a water bulb without a purification filter unit, and can be used in all fields to which the present invention can be applied.

1 is a schematic schematic diagram of an electric range that is an example to which the present inventors pipe residual water drain module is applied. In the case of FIG. 1, it means an under-sinker type, and shows an electric range in which the faucet part 30 is provided. The electric range is a structure in which the craters (H1, H2, H3) and the faucet unit 30 are combined, and a touch-sensitive input unit 50 is provided, so that the user can determine the time or amount of water from the faucet unit 30. Can be adjusted. In addition, the faucet unit 30 is provided with a water outlet valve 32, so that the user can manually control the water outlet. Normally, the water outlet valve 32 is maintained in a closed state, and when the water outlet valve is opened by a user's operation, water is discharged through the faucet unit 30.

This will be described with reference to FIGS. 2 to 4.

The inventors' piping residual water drain module includes an inlet connection unit 110, a two-way valve 120, a main pipe 130, a water outlet connection unit 140, a pressure sensing unit 150, a control unit 160, and a drain connection unit 170. Include. Here, the'connection parts' mean a fitting part, and in the connection parts, a flow path composed of tubing or the like is inserted and may be closely coupled.

The receiving connection unit 110 is a configuration for coupling with a pipe discharged from the purification filter unit 20. The pipe discharged from the purification filter unit 20 may be tubing, and the end side of the tubing is tightly coupled to the receiving connection unit 110. At this time, in order to further increase the tightness with the tubing, the receiving connector 110 may be further provided with a rubber packing to prevent leakage.

The two-way valve 120 is electrically connected to the control unit 160 so that the opening and closing operation of the two-way valve 120 is controlled by the control unit 160. At this time, the two-way valve 120 is configured to flow the raw water supplied from the inlet connection unit 110 to the outlet passage or flow toward the drain connection unit 170 to drain the water. That is, it selectively flows raw water. In addition, the two-way valve 120 is preferably composed of an electronic valve, including a solenoid valve, and all types of known valves can be applied.

The main pipe 130 is a pipe connected to the water outlet connection part 140 and in communication with the water inlet connection part 110 and the drain connection part 170. Raw water is supplied through the inlet connection part 110, and the drain connection part 170 is formed to be connected to the drain pipe. At this time, the main pipe 130 forms a water outlet channel together with the water outlet connection part 140. In Figure 2, a two-way valve 120 is provided between the inlet connection 110, the water outlet connection 140 and the drain connection 170, that is, the two-way valve 120 is provided on the main pipe 130 It can be seen as being done.

The water outlet connection part 140 is a part that is physically coupled to the faucet part 30. A water outlet valve 32 is provided between the faucet part 30 and the water outlet connection part 140.

The pressure sensing unit 150 is configured to detect a change in pressure in the outlet passage, and is configured to output an electrical signal when the pressure changes. Here, the pressure sensing unit 150 may be a high pressure switch (HPS). In FIG. 2, the pressure sensing unit 150 is shown to be coupled to the water outlet connection unit 140, but the coupling position of the pressure sensing unit 150 is not limited to the position as long as the pressure change in the water outlet passage can be detected.

The control unit 160 is configured to receive an electrical signal output from the pressure sensing unit 150 and is configured to electrically control the two-way valve 120. The control unit 160 may be provided in the pipe residual water drain module 100 as a PBA. The control unit 160 may wirelessly receive an electrical signal from the pressure sensing unit 150. In addition, the control unit 160 includes a timer (not shown), by means of a timer, the two-way valve 120 communicates the receiving connection unit 110 and the drain connection unit 170 only for a preset time, and When time elapses, the inlet connection unit 110 and the water outlet connection unit 140 may be communicated. Here, the preset time may vary according to the designer's selection, and may be adjusted by the length and diameter of the pipe. Considering that the diameter of the tubing is generally 3 mm or less, the preset time may be 2 to 4 seconds.

The drain valve 170 is a part that is physically coupled to the drain pipe. When the control unit 160 transmits a specific electrical signal to the two-way valve 120, all of the water stagnant in the pipe may be discharged through the drain connection unit 170. This will be described later.

5 is a flowchart of a method of draining residual water in a pipe using the first embodiment of the pipe residual water drain module according to the present invention, and will be described with reference to FIGS. 3 and 4 together.

A method of draining residual water in a pipe according to the present invention includes steps S110 to S140.

Step (S110) is a step in which the water outlet valve 32 provided in the faucet part 30 is opened to change the pressure of the water outlet passage. Until immediately before the user opens the water outlet valve 32, a constant pressure is maintained in all pipes. The moment the user opens the water outlet valve 32, a pressure drop occurs temporarily in the water outlet passage.

Step S120 is a step of detecting a pressure change in the water outlet passage by the pressure sensing unit 150 and transmitting an electrical signal to the control unit 160.

Step (S130) is controlled by the control unit 160, the two-way valve 120 for selectively communicating the inlet connection unit 110 with the water outlet connection unit 140 and the drain connection unit 170, the two-way valve 120 ) Is a step in which water is discharged through the drain pipe by communicating the inlet connection unit 110 and the drain connection unit 170 for a preset time. Since the raw water is always supplied at a constant pressure through the faucet, when the inlet connection 110 is in communication with the drain connection 170 through the two-way valve 120, all water stagnant in the pipe by the supplied raw water is drained. It is discharged through the connection part 170. As described above, the drain connection part 170 is coupled to the drain pipe. The drain pipe may be connected to the drain pipe of the building, and if the connection to the drain pipe is difficult, the drain pipe may be connected to a storage tank capable of storing temporarily discharged water. If the storage tank is used, the user must periodically empty it.

Step (S140) is a step in which, by the control unit 160, when a preset time has elapsed, the two-way valve 120 communicates the inlet connection unit 110 and the water outlet connection unit 140 to discharge water through the faucet unit 30 to be. In other words, when the user manipulates the water outlet valve 32, it is considered that the user has given the water outlet command, and a predetermined time elapses from the user's water outlet command to the actual water outlet. Since it takes a predetermined time to discharge the residual water from the pipe, delayed water discharge from the faucet unit 30 is generated.

6 is a block diagram of a modified example of the first embodiment of the pipe residual water drain module according to the present invention. Unlike the configuration using a two-way valve in the first embodiment, the pipe residual water drain module 100 ′ shown in FIG. 6 is provided with a water outlet flow channel valve 132 on the side of the main pipe 130, and a drain connection part ( The drain connection valve 172 is provided on the 170) side. The control unit 160 can selectively open and close the water outlet flow channel valve 132 and the drain connection valve 170 to perform water outlet from the faucet unit 30 and drainage to the drain pipe.

7 is a block diagram of a piping residual water drain system to which a second embodiment of the piping residual water drain module according to the present invention is applied. A description overlapping with the above-described first embodiment will be omitted.

The present inventor's pipe residual water drain system includes a raw water supply unit 10, a purification filter unit 20, a pipe residual water drain module 200, a main pipe, a drain pipe, a first valve 22 and a second valve 24. .

The main pipe is a pipe connecting the purification filter part 20 and the inlet connection part 210, and the drain pipe is a pipe branching from the main pipe. The first valve 22 is provided before the branch point at which the drain pipe diverges from the main pipe, and the second valve 24 is provided on the drain pipe. The first valve 22 regulates the supply of raw water supplied from the faucet into the pipe residual water drain module 200, and the second valve 24 controls drainage to the drain pipe. The first valve 22 and the second valve 24 are formed as electronic valves, and opening and closing may be controlled by the control unit 260.

In the second embodiment of the pipe residual water drain module, a main pipe is provided between the inlet connection part 210 and the water outlet connection part 240. Here, the main pipe forms a water outlet channel together with the inlet connection part 210 and the water outlet connection part 240. In FIGS. 7 to 9, the pressure sensing unit 250 is shown to be connected to the inlet connection unit 201, but the present invention is not limited thereto, and any position capable of detecting a pressure change in the water outlet passage is possible. Here, the pressure sensing unit 250 is preferably a low pressure switch (LPS). In this regard, the first embodiment is configured to detect a drop in pressure, whereas the second embodiment is configured to detect an increase in pressure due to the closing of the water outlet valve 32.

The check fitting unit 280 is a component that controls communication with the water outlet passage and outside air. It is configured so that air flows in only one direction. At the moment when the water outlet valve 32 is closed, a differential pressure is applied to the pipe including the drain pipe. In order to discharge water remaining in the pipe, the differential pressure must be released, and by releasing the differential pressure in the pipe through communication with air, Residual water can be discharged through the drain pipe. The check fitting unit 280 may be manually pressed by the user to be opened to the outside forcibly, but the check fitting unit 280 may be configured as an air pump in order to more efficiently discharge residual water. When the air pump is operated by the control unit 260, residual water in the main pipe is discharged to the drain pipe by air discharged from the air pump. Here, a filter member is further provided in the air pump to prevent foreign substances from penetrating into the pipe through an empty space.

10 is a flowchart of a method of draining residual water in a pipe using a pipe residual water drain system to which a second embodiment of the pipe residual water drain module according to the present invention is applied, and will be described with reference to FIGS. 8 and 9.

A method of draining the residual water in the pipe includes steps S210 to S240.

Step (S210) is a step in which the water outlet valve 32 provided in the faucet unit 30 is closed to change the pressure of the water outlet passage. Immediately after the water outlet valve 32 is closed by the user's operation, the pressure in the water outlet passage temporarily increases significantly.

In step S220, a pressure change in the water outlet passage is sensed by the pressure sensing unit 250, and an electrical signal is transmitted to the controller 260. The pressure sensing unit 250 detects that the pressure in the water outlet passage is temporarily increased and transmits an electrical signal to the control unit 260.

In step S230, the first valve 22 is closed and the second valve 24 is opened by the control unit 260, and the check fitting unit 280 is operated according to a predetermined condition, and the main pipe This is the step in which residual water inside is discharged to the drain pipe. Here, the check fitting unit 280 may be configured such that the pipe is temporarily exposed to the outside air by a user's manipulation. Alternatively, an air pump may be used. Residual water can be discharged by releasing the differential pressure applied in the pipe by the check fitting unit 280. Of course, on the premise that the first valve 22 is closed, the second valve 24 must be opened. Even if the first valve 22 is open, the water outlet valve 32 is currently closed, so it may not have a significant effect, but the residual water flows back toward the purification filter unit 20 due to the discharge pressure by the air pump. This is to prevent it in advance.

The step S240 is a step S240 in which the pressure sensing unit 250 is deactivated, the first valve 22 is opened, and the second valve 24 is closed. At this time, the check fitting unit 280 is operated only for a preset time. When the preset time has elapsed, the pressure sensing unit 250 must be inactive. As the first valve 22 is opened and the second valve 24 is closed, raw water is supplied from the faucet at a constant pressure, because a pressure change occurs again in the outlet passage of the pipe residual water drain module 200 . Here, the pressure sensing unit 250 may be designed to be changed to an active state again after a predetermined time elapses.

On the other hand, in step S230, with the first valve 22 closed and the second valve 24 open, the check fitting 280 may intermittently and repeatedly operate. This is because, while the check fitting unit 280 is temporarily stopped, residual water stagnant in the pipe on the side of the faucet unit 30 can be flowed downward by gravity. These conditions may be changed according to the designer's selection, and the designer may set the conditions in consideration of the installation location of the present invention, water pressure from the power receiving bulb, and the like.

In the above, whether or not the user has used water is determined only as a pressure change, it may be detected by further including a flow sensor in consideration of both pressure and flow rate.

In the above, the present specification has been described with reference to the embodiments shown in the drawings so that those skilled in the art can easily understand and reproduce the present invention, but this is only exemplary, and those skilled in the art can use various modifications and equivalents from the embodiments of the present invention. It will be appreciated that embodiments are possible. Therefore, the scope of protection of the present invention should be determined by the claims.

10: raw water supply unit
20: purification filter unit
22: first valve
24: second valve
30: Faucet part
32: water outlet valve
110, 210: inlet connection
120: 2-way valve
130: main building
140, 240: water outlet connection
150, 250: pressure sensing unit
160, 260: control unit
170, 270: drain connection

Claims (14)

As a pipe residual water drain module,
A water outlet connection portion 140 formed to be connected to the faucet portion 30 for performing water outlet;
As the main pipe 130 connected to the water outlet connection part 140 and in communication with the water inlet connection part 110 and the drain connection part 170, raw water is supplied through the inlet connection part 110, and the drain connection part 170 Is formed to be connected to the drain pipe, the main pipe 130 forming a water outlet channel together with the water outlet connection part 140;
A pressure sensing unit 150 that senses a pressure change in the water outlet passage and outputs an electrical signal when the pressure changes; And
A control unit 160 for receiving an electrical signal output from the pressure sensing unit 150; Including,
The control unit 160 allows the inlet connection unit 110 to selectively communicate with the water outlet passage or the drain connection unit 170,
Pipe residual water drain module.
The method of claim 1,
The faucet portion 30 is provided with a water outlet valve 32 for controlling water outlet,
When the water outlet valve 32 is opened, a pressure change in the water outlet passage is sensed by the pressure sensing unit 150,
By the control unit 160, the receiving connection unit 110 and the drain connection unit 170 are in communication,
Pipe residual water drain module.
The method of claim 2,
A two-way valve 120 is coupled to the rear end of the inlet connection part 110, and the water outlet connection part 140 and the drain connection part 170 are connected to the two-way valve 120,
The control unit 160 controls the operation of the two-way valve 120 through an electrical signal,
Pipe residual water drain module.
The method of claim 3,
The control unit 160,
Includes a timer, and by the timer, the two-way valve 120 communicates the inlet connection part 110 and the drain connection part 170 only for a preset time, and when the preset time elapses, the inlet connection part (110) and to communicate the water outlet connection (140),
Pipe residual water drain module.
The method of claim 3,
The control unit 160,
Controlling the opening and closing operation of the two-way valve 120 through the pressure change value sensed by the pressure sensing unit 150,
Pipe residual water drain module.
The method of claim 1,
The pressure sensing unit 150 is a high pressure switch (HPS),
Pipe residual water drain module.
The method of claim 2,
A water outlet flow channel valve 132 is provided on the side of the main pipe 130, and a drain connection valve 172 is provided on the side of the drain connection part 170,
The control unit 160 selectively opens and closes the water outlet flow channel valve 132 and the drain connection valve 170,
Pipe residual water drain module.
As a method of draining residual water in a pipe using a pipe residual water drain module,
The pipe residual water drain module,
Water outlet connection 140; And a main pipe 130 forming a water outlet passage together with the water outlet connection part 140; Including,
(a) opening the water outlet valve 32 provided in the faucet part 30 in which water outlet is performed to change the pressure of the water outlet passage (S110);
(b) a step in which a pressure change in the outlet passage is sensed by the pressure sensing unit 150, and an electrical signal output from the pressure sensing unit 150 is transmitted to the control unit 160 (S120);
(c) a step in which the two-way valve 120 is controlled by the control unit 160,
The two-way valve 120 includes an inlet connection unit 110 to which raw water is supplied to the water outlet connection unit 140; And a drain connection part 170 connected to the drain pipe. Selectively communicate with,
The two-way valve 120 communicates with the water intake connection part 110 and the drain connection part 170 for a preset time, and discharges water through the drain pipe (S130); And
(d) After the preset time has elapsed, by the control unit 160, the two-way valve 120 communicates the inlet connection unit 110 and the water outlet connection unit 140 to the faucet unit 30 Step (S140) to be discharged through; Containing,
How to drain residual water in the pipe.
As a piping residual water drain system including a piping residual water drain module,
Raw water supply unit 10;
A purification filter unit 20;
Pipe residual water drain module 200;
A main pipe connecting the purification filter unit 20 and the pipe residual water drain module 200;
A drain pipe branching from the main pipe; And
A first valve (22) provided between the purification filter unit 20 and a branch point of the drain pipe and a second valve (24) provided in the drain pipe; Including,
The piping residual water drain module 200,
A water outlet connection unit 240 formed to be connected to the faucet unit 30 for performing water extraction;
An inlet connection part 210 connected to the main pipe to supply raw water;
The front end is connected to the inlet connection part 210, the rear end is connected to the outlet connection part 240, and the main pipe 230 forming a water outlet channel together with the inlet connection part 210 and the outlet connection part 240;
A pressure sensing unit 250 that senses a pressure change in the water outlet passage and outputs an electrical signal when the pressure changes;
A check fitting unit 280 for controlling communication with the water outlet passage and outside air; And
A control unit 260 for receiving the electrical signal output from the pressure sensing unit 250 and adjusting the check fitting unit 280; Including,
The control unit 260,
Controlling the check fitting part 280, the first valve 22, and the second valve 24 to discharge residual water to the drain pipe,
Pipe residual water drain system.
The method of claim 9,
The control unit 260,
When an electrical signal is received from the pressure sensing unit 250,
In a state in which the first valve 22 is closed and the second valve 24 is open, operating the check fitting 280,
Pipe residual water drain system.
The method of claim 10,
The check fitting part 280 is an air pump, and when the air pump is operated by the control unit 260, residual water in the main pipe is discharged to the drain pipe by air discharged from the air pump,
Pipe residual water drain system.
The method of claim 11,
The check fitting part 280 is further provided with a filter member,
Pipe residual water drain system.
A method of draining residual water in a pipe using the pipe residual water drain system according to claim 9,
(a) the step of changing the pressure of the outlet passage by closing the outlet valve 32 provided in the faucet part 30 (S210);
(b) detecting a pressure change in the water outlet passage by the pressure sensing unit 250 and transmitting an electrical signal to the control unit 260 (S220); And
(c) By the control unit 260, the first valve 22 is closed and the second valve 24 is opened, and the check fitting unit 280 is operated according to a predetermined condition. Discharging the residual water in the main pipe to the drain pipe (S230); Containing,
How to drain residual water in the pipe.
The method of claim 13,
The predetermined condition of step (c) is a preset time, and the check fitting unit 280 is operated only for the preset time,
After step (c),
(d) the pressure sensing unit 250 is deactivated, the first valve 22 is opened, and the second valve 24 is closed (S240); Further comprising,
How to drain residual water in the pipe.

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