Water drinking equipment

Abstract

The utility model provides water drinking equipment. The water drinking equipment comprises a water tank, a first electromagnetic valve, a first water outlet nozzle, a second electromagnetic valve, a second water outlet nozzle, a monitoring module and a controller, the second electromagnetic valve and the monitoring module are both in communication connection with the controller; the water tank is provided with a water inlet, a hot water outlet and a first water outlet. A heating device is arranged on the inner side of the water tank. A water inlet of the first electromagnetic valve is connected with a hot water outlet of the water tank, and a water outlet of the first electromagnetic valve is connected with the first water outlet nozzle; a water inlet of the second electromagnetic valve is connected with the first water outlet, and a water outlet of the second electromagnetic valve is connected with the second water outlet nozzle; the monitoring module is used for monitoring the duration of continuous closing of the first electromagnetic valve; the controller is used for controlling the second electromagnetic valve to be opened under the condition that the duration exceeds the preset duration and controlling the second electromagnetic valve to be closed under the condition that the duration does not exceed the preset duration. By controlling and discharging the standing water in the water tank at regular time, the drinking water is prevented from generating peculiar smell or breeding bacteria.

Description

TECHNICAL FIELD

[0001] The utility model relates to drinking water machine technical field, especially drinking water equipment. BACKGROUND

[0002] At present, the water tank circulation system of drinking water equipment in the market is mostly applied to clean waterway, and its main purpose is to prevent bacteria breeding in water standing for a long time, because people generally believe that water in high temperature state is not easy to produce bacteria, and hot water in the water tank can be manually replaced, therefore, hot water tank is seldom applied to the circulation system in drinking water equipment. However, with the increasing requirement of people on life quality, hot water standing for a long time in the water tank may be mixed with the odor of the tank body material, which cannot meet the requirement of people with certain requirement on hot water quality, thereby affecting the drinking experience of users. SUMMARY

[0003] The utility model solves the technical problem that the hot water is mixed with the odor due to the long time standing of the water tank in the prior art, and provides drinking water equipment.

[0004] The utility model solves the above technical problem through the following technical scheme:

[0005] The application provides drinking water equipment.

[0006] The drinking water equipment includes a water tank, a first electromagnetic valve, a first water outlet, a second electromagnetic valve, a second water outlet, a monitoring module and a controller, the second electromagnetic valve and the monitoring module are in communication connection with the controller,

[0007] The water tank is provided with a water inlet, a hot water outlet and a first drain outlet, and a heating device is further arranged on the inner side of the water tank,

[0008] The water inlet of the first electromagnetic valve is connected with the hot water outlet of the water tank, and the water outlet of the first electromagnetic valve is connected with the first water outlet,

[0009] The water inlet of the second electromagnetic valve is connected with the first drain outlet, and the water outlet of the second electromagnetic valve is connected with the second water outlet,

[0010] The monitoring module is used for monitoring the duration of continuous closing of the first electromagnetic valve,

[0011] The controller is used for controlling the second electromagnetic valve to be opened when the duration exceeds a preset duration, and controlling the second electromagnetic valve to be closed when the preset duration is not exceeded.

[0012] Optionally, the monitoring module includes a pressure sensor and a timer,

[0013] The pressure sensor is arranged between the first electromagnetic valve and the first water outlet nozzle; and the timer is used to monitor the duration of no pressure response of the pressure sensor.

[0014] Optionally, the water dispensing device further comprises a third electromagnetic valve in communication with the controller.

[0015] The water inlet of the third electromagnetic valve is connected with the water inlet pipeline of the water dispensing device.

[0016] The water inlet of the third electromagnetic valve is connected with the water inlet pipeline of the water dispensing device.

[0017] Optionally, the water dispensing device further comprises a one-way valve.

[0018] The water inlet of the one-way valve is connected with the water outlet of the third electromagnetic valve, and the water outlet of the one-way valve is connected with the water inlet of the water tank.

[0019] Optionally, the water dispensing device further comprises a water level sensor in communication with the controller.

[0020] The water level sensor is arranged inside the water tank, and is used to detect the water level in the water tank and send the detected water level to the controller, which is used to control the third electromagnetic valve to be closed when the water level in the water tank reaches a preset height.

[0021] Optionally, the controller comprises a first control module and a second control module, and the first control module and the second control module are in communication.

[0022] The first control module is in communication with the third electromagnetic valve, and the second control module is in communication with the second electromagnetic valve.

[0023] Optionally, the water dispensing device further comprises a cooling device.

[0024] The input end of the cooling device is connected with the water outlet of the second electromagnetic valve, and the output end of the cooling device is connected with the second water outlet nozzle.

[0025] Optionally, the cooling device comprises a semiconductor refrigeration sheet.

[0026] Optionally, the heating device is an electric heating tube.

[0027] Optionally, the water dispensing device further comprises a manual ball valve.

[0028] The water tank is provided with a second drain outlet.

[0029] The manual ball valve is connected with the second drain outlet.

[0030] On the basis of conforming to the common sense of the art, the above-mentioned optional conditions can be combined arbitrarily, that is, the preferred examples of the utility model are obtained.

[0031] The positive progress effect of the utility model is: when the user uses the hot water and closes the first electromagnetic valve, the monitoring module starts to monitor the continuous closing time of the first electromagnetic valve, a preset time length is set according to the suitable storage time of the hot water, if the closing time length of the first electromagnetic valve monitored exceeds the preset time length, the controller will control the second electromagnetic valve to open, and the hot water is discharged through the second water outlet nozzle, if the monitoring time length does not exceed the preset time length, the controller keeps the second electromagnetic valve closed, so as to prevent the hot water from flowing out. Through the timed discharge, the water in the water tank is kept fresh, and the generation of peculiar smell or bacteria is avoided, not only the automation level of the drinking water equipment is improved, but also the drinking water safety and health of the user are ensured, and the drinking experience of the user is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A structure schematic diagram of a drinking water equipment is provided in the utility model;

[0033] Figure 2 A normal use mode flow chart of the drinking water equipment is provided in the utility model;

[0034] Figure 3 An emptying and rewatering mode flow chart of the drinking water equipment after a long time of non-use is provided in the utility model. DETAILED DESCRIPTION

[0035] The utility model will be further illustrated by means of examples below, but the utility model is not limited in the scope of the examples.

[0036] In the embodiments of the utility model, the prefix words such as "first" and "second" are only used to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of ordinal words and other prefix words for distinguishing description objects in the embodiments of the utility model does not constitute a limitation on the described objects, and the statement of the described objects should refer to the description in the context of the claims or embodiments, and should not constitute an unnecessary limitation because of the use of such prefix words. In addition, in the description of the embodiments, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0037] In the embodiments of the utility model, the collection, storage, use, processing, transmission, provision and disclosure of user personal information meet the relevant legal regulations and do not violate public order and good customs.

[0038] Reference Figure 1The embodiment provides a water drinking equipment, which comprises a water tank 1, a first electromagnetic valve 2, a first water outlet nozzle 3, a second electromagnetic valve 4, a second water outlet nozzle 5, a monitoring module 6 and a controller; the second electromagnetic valve and the monitoring module are in communication connection with the controller; the water tank is provided with a water inlet, a hot water outlet and a first water outlet, and a heating device 7 is further arranged on the inner side of the water tank; the water inlet of the first electromagnetic valve 2 is connected with the hot water outlet of the water tank 1, and the water outlet of the first electromagnetic valve 2 is connected with the first water outlet nozzle 3; the water inlet of the second electromagnetic valve 4 is connected with the first water outlet, and the water outlet of the second electromagnetic valve 4 is connected with the second water outlet nozzle 5; the monitoring module 6 is used for monitoring the time length of continuous closing of the first electromagnetic valve 2; and the controller is used for controlling the second electromagnetic valve 4 to be opened in the case that the time length exceeds a preset time length, and controlling the second electromagnetic valve 4 to be closed in the case that the time length does not exceed the preset time length.

[0039] In actual application, the water drinking equipment can be a water dispenser.

[0040] In the embodiment, the monitoring module is used for monitoring the continuous closing time of the first electromagnetic valve, a preset time length is set according to the suitable storage time of hot water, if the monitoring module monitors that the closing time length of the first electromagnetic valve exceeds the preset time length, the controller controls the second electromagnetic valve to be opened, and the hot water is discharged through the second water outlet nozzle, and if the monitoring time length does not exceed the preset time length, the controller keeps the second electromagnetic valve closed, so as to prevent the loss of hot water.

[0041] In an optional embodiment, the monitoring module comprises a pressure sensor and a timer; the pressure sensor is arranged between the first electromagnetic valve and the first water outlet nozzle; and the timer is used for monitoring the time length of no pressure response of the pressure sensor.

[0042] Specifically, the pressure sensor is installed on a pipeline between the first electromagnetic valve and the first water outlet nozzle, is used for detecting the pressure change of water flow in real time, and needs to be controlled to output or close by an external human being; when a user opens the first electromagnetic valve to take hot water from the first water outlet nozzle, the pressure sensor can sense the pressure generated by water flow, and the timer is reset; when the user closes the first electromagnetic valve after using the hot water, water flow stops, the pressure sensor no longer detects pressure, and the timer starts timing again. The timer in the monitoring module is mainly used in cooperation with the pressure sensor, and is specially used for monitoring the time length of no pressure response of the pressure sensor after the first electromagnetic valve is closed; once the time length recorded by the timer exceeds the preset time length of the system, it is indicated that the hot water has been stored in the water tank for more than the suitable time, and the monitoring module sends a signal to the controller to indicate that the hot water has been stored for too long.

[0043] In a specific example, at 8:00 am, user A opens the first solenoid valve to take hot water for drinking, at this time the pressure sensor detects the water flow pressure, the timer is reset, when user A finishes using the hot water, the first solenoid valve is closed, at this time the pressure sensor no longer detects the water flow pressure, the timer starts to record the time length of no pressure response after the first solenoid valve is closed, the system preset time length is 8 hours, which is used to judge whether the hot water is stored for too long time, if there is no other user to use the hot water in the 8 hours time period from 8:00 am to 4:00 pm, at this time the time length recorded by the timer reaches the preset time length, the monitoring module will send a signal to the controller, indicating that the hot water is stored for too long time.

[0044] In an optional embodiment, as shown in Figure 1 The third solenoid valve outlet is connected with the water inlet of the water tank, and the water inlet of the third solenoid valve is connected with the water inlet pipeline of the water drinking device.

[0045] Specifically, the water outlet of the third solenoid valve is connected with the water inlet of the water tank, and the water inlet is connected with the water inlet pipeline of the water drinking device, which is mainly used to control the water inlet process of the water tank of the water drinking device, to ensure that the water tank can supplement fresh water source when needed, after the third solenoid valve is opened, the fresh water source in the water inlet pipeline flows into the water tank to supplement the water amount, and the communication connection between the third solenoid valve and the controller means that the controller can control the opening and closing of the third solenoid valve according to the real-time demand and monitoring data of the system, so as to realize the intelligent control of the water inlet process of the water tank.

[0046] In an optional embodiment, as shown in Figure 1 The water inlet of the one-way valve is connected with the water outlet of the third solenoid valve, and the water outlet of the one-way valve is connected with the water inlet of the water tank.

[0047] Specifically, the one-way valve mainly functions to ensure that water can only flow in one direction, i.e. from the third solenoid valve to the water tank, to prevent the water from flowing back to the third solenoid valve or the water inlet pipeline, in normal operation, the one-way valve can prevent the water from flowing back from the water tank when the system stops water supply or the pressure changes, which helps to maintain the pressure balance of the system and prevent possible pollution, and to some extent, the prevention of backflow can also avoid unnecessary wear of the third solenoid valve.

[0048] In an optional embodiment, as shown in Figure 1As shown, the drinking water equipment further comprises a water level sensor 10 in communication connection with the controller; the water level sensor is located inside the water tank, and is used to detect the water level in the water tank and send the detected water level to the controller, and the controller is used to control the third electromagnetic valve to close when the water level in the water tank reaches a preset height.

[0049] Specifically, the water level sensor is installed inside the water tank and can monitor the water level change in the water tank in real time, providing accurate water level data. The water level sensor and the controller are in communication connection, so the controller can obtain the water level data in the water tank in real time. The controller executes corresponding control logic according to the data provided by the water level sensor. In order to avoid the risk of water tank overflow, the controller controls the third electromagnetic valve to close when the water level reaches a preset height, stopping the water tank from filling water. The setting value of the water level preset height can be adjusted adaptively according to the actual water tank specifications, use environment and user's needs.

[0050] In a specific example, when the water level sensor detects that the water level in the water tank is lower than 10% of the water tank capacity, the water level sensor sends a low water level signal to the controller. The controller controls the third electromagnetic valve to open and controls the first electromagnetic valve and the second electromagnetic valve to be in a closed state after receiving the low water level signal. After the third electromagnetic valve is opened, fresh water source flows into the water tank through the water inlet pipeline. During the water replenishment process, the water level sensor continuously monitors the water level change to ensure real-time updating of the water level information. When the water level reaches 85% of the water tank capacity, the water level sensor sends a high water level signal to the controller. The controller controls the third electromagnetic valve to close and stops filling water after receiving the high water level signal. By integrating the water level sensor, the drinking water equipment can realize more intelligent and automatic water tank water level management. The drinking water equipment can realize automatic water filling without manual attendance, ensure that there is always sufficient water source in the water tank, and through real-time monitoring of the water level height of the water tank and intelligent control of the opening and closing of the third electromagnetic valve, users do not need to worry about the problem of water tank water shortage or overflow.

[0051] In an optional embodiment, the controller comprises a first control module and a second control module, which are communicatively connected; the first control module is communicatively connected with the third electromagnetic valve, and the second control module is communicatively connected with the second electromagnetic valve. Specifically, the controller manages the water tank water replenishment and hot water discharge functions through two independent control modules, improving the efficiency and response capability of the system. Among them, the first control module is mainly used for water tank water replenishment control of the drinking water equipment. When the water level sensor of the drinking water equipment monitors that the water level in the water tank is lower than the preset minimum water level, a low water level signal is sent to the first control module. After the first control module receives the low water level signal, the third electromagnetic valve is controlled to open, and the water tank starts to be replenished with water. When the water level reaches the preset maximum water level, the water level sensor sends a high water level signal to the first control module. When the first control module receives the high water level signal, the third electromagnetic valve is controlled to close, and the water tank stops filling with water. The second control module is mainly used for the discharge control of hot water in the water tank. When the monitoring module monitors that the first electromagnetic valve is closed for a duration longer than the preset duration, a signal is sent to the second control module. After the second control module receives the signal, the second electromagnetic valve is controlled to open, and the hot water in the water tank is discharged. If the duration for which the first electromagnetic valve is closed does not exceed the preset duration, the second control module keeps the second electromagnetic valve closed. After the water level sensor monitors that the water tank is empty, a signal is sent to the first control module and the second control module. The second control module controls the second electromagnetic valve to close, and the first control module controls the third electromagnetic valve to open, and the water tank is replenished with water. The first control module and the second control module can be communicatively connected, allowing the two control modules to share information about the system state and operation results. When the first control module controls the third electromagnetic valve to open and replenishes the water tank, it transmits corresponding signals to the second control module, and the second control module controls the second electromagnetic valve to be in a closed state to avoid simultaneous water filling and draining of the water tank. When the second control module controls the second electromagnetic valve to open for draining, it transmits corresponding signals to the first control module, and the first control module controls the third electromagnetic valve to be in a closed state. Through the communication connection between the first control module and the second control module, simultaneous water filling and draining of the water tank is effectively avoided, and the control system of the drinking water equipment can achieve more precise and reliable automatic management, improving the stability of the entire system and the user experience.

[0052] In specific implementation, the communication connection between the controller and the second electromagnetic valve, the third electromagnetic valve, the monitoring module, the water level sensor, the first control module, and the second control module can be wired connection, such as transmitting control signals through electrical connection, or wireless connection, such as transmitting control signals wirelessly.

[0053] In an optional embodiment, as Figure 1As shown, the water dispensing device further comprises a cooling device 11; the input end of the cooling device is connected with the water outlet of the second electromagnetic valve, and the output end of the cooling device is connected with the second water outlet nozzle.

[0054] Specifically, the input end of the cooling device is connected with the water outlet of the second electromagnetic valve, and the output end is connected with the second water outlet nozzle. When the second electromagnetic valve is opened, hot water flows into the cooling device, the temperature of the hot water is reduced to a suitable temperature through the cooling device, and the cooled water flows to the second water outlet nozzle through the output end of the cooling device, and then is discharged. By reducing the temperature of the discharged water, the heat shock of hot water on the water pipeline is reduced, and the service life of the pipeline is prolonged.

[0055] In a specific example, if the first electromagnetic valve is continuously closed for more than 8 hours, the controller controls the second electromagnetic valve to be opened at this time, and the hot water in the water tank flows into the cooling device, and after temperature reduction treatment, it is discharged through the second water outlet nozzle, realizing the discharge treatment of the long-term stored hot water in the water tank.

[0056] In another specific example, the heat released during the temperature reduction process of the hot water in the cooling device can be recycled, and the recycled heat can be used to preheat the cold water entering the water tank, reducing the additional demand for electric energy or gas.

[0057] In an optional embodiment, the cooling device comprises a semiconductor refrigeration sheet.

[0058] Specifically, in the water dispensing device, the semiconductor refrigeration sheet can effectively reduce the temperature of the hot water, thereby effectively reducing the damage of direct discharge of hot water to the water pipeline. When the second electromagnetic valve is opened in the water dispensing device and hot water flows into the cooling device, one end of the semiconductor refrigeration sheet absorbs the heat of the hot water, reducing the temperature of the hot water, and the other end releases heat. In this way, the temperature of the hot water is reduced to a suitable level for direct discharge after passing through the cooling device. In addition, since the semiconductor refrigeration sheet has no vibration, no noise, and does not contain any refrigerant, it can provide a cleaner and more efficient cooling solution, which is helpful for energy saving and environmental protection of the water dispensing device.

[0059] In an optional embodiment, the heating device is an electric heating tube.

[0060] Specifically, water flows into the water tank through the water inlet, and when the water level reaches a certain height or meets certain conditions, the electric heating tube starts to work and heats the water in the water tank according to actual needs. The electric heating tube is usually equipped with an overheat protection device, such as a temperature control switch or a fuse. When the water temperature approaches or reaches the preset maximum temperature, the overheat protection device will start to work, which can effectively prevent the water temperature from being too high or the equipment from malfunctioning.

[0061] In an optional embodiment, as shown in Figure 1As shown, the water dispenser further comprises a manual ball valve 12; the water tank is provided with a second water outlet; the manual ball valve is connected with the second water outlet.

[0062] Specifically, the manual ball valve is arranged in the water dispenser to provide an emergency or manual operating mechanism. The manual ball valve is connected with the second water outlet of the water tank, so that the water tank can be quickly emptied of hot water when needed, such as when the temperature is out of control or other safety hazards occur. The hot water can be quickly emptied through the manual ball valve, and the manual ball valve needs to be closed after the emptying operation is completed. As a supplement to the automatic control system of the water dispenser, the manual ball valve provides a backup means to deal with the failure of the automatic control system or the need for manual intervention.

[0063] In a specific example, the controller of the water dispenser detects an abnormally high temperature, the controller issues an alarm, and the maintenance personnel immediately turn off the power supply of the water dispenser after confirming the alarm, and then open the manual ball valve to empty the hot water in the water tank. After quickly draining the water, the maintenance personnel troubleshoot the water dispenser.

[0064] In another specific example, according to the equipment maintenance plan, it may be necessary to periodically empty and check the inside of the water tank. At this time, the operator can open the manual ball valve to drain water after turning off the power supply, so as to check and clean the inside of the water tank.

[0065] In a specific example, the water dispenser mainly includes two working states: a normal use mode and an emptying and rewatering mode after a long period of non-use. The normal use mode indicates that the water dispenser is continuously used by a person within 12 hours, such as Figure 2 As shown, when the water tank needs to be filled with water, the system first determines whether the current water level in the water tank is lower than the preset minimum water level. If the water level is lower than the preset height, the third electromagnetic valve is opened to allow the water source to enter the water tank. If the water level is not lower than the preset height, the third electromagnetic valve remains closed and does not perform water filling. During the water filling process of the water tank, the system monitors the water level in real time. When the water level in the water tank reaches the preset maximum water level, the third electromagnetic valve is closed to stop water filling. If the water level does not reach the preset height, the third electromagnetic valve remains open to ensure continuous water filling of the water tank. For another emptying and rewatering mode after a long period of non-use, such as Figure 3If the system monitors that the first electromagnetic valve is closed for more than 12 hours, it is considered that the hot water in the water tank is not used for a long time, the controller controls the third electromagnetic valve to keep closed to prevent the water tank from being filled with water, and the controller opens the second electromagnetic valve to drain the hot water in the water tank, if the second electromagnetic valve has water flowing through all the time, it indicates that the water is still being drained, the third electromagnetic valve is kept closed and the second electromagnetic valve is kept open, if the second electromagnetic valve has no water flowing through, it indicates that the water tank has been emptied, once it is confirmed that the water in the water tank has been emptied, the controller closes the second electromagnetic valve to prepare to refill water, the controller opens the third electromagnetic valve to allow the water source to enter the water tank, and the system monitors the water level in real time during the water filling process, if the water level does not reach the preset height, the third electromagnetic valve is kept open to continue water filling, if the water level reaches the preset height, the third electromagnetic valve is closed to stop water filling, after the water filling is stopped, the system returns to the normal use mode to wait for the user to use hot water.

[0066] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A drinking water apparatus, characterized in that The drinking water equipment comprises a water tank, a first electromagnetic valve, a first water outlet, a second electromagnetic valve, a second water outlet, a monitoring module and a controller; the second electromagnetic valve and the monitoring module are in communication connection with the controller; The water tank is provided with a water inlet, a hot water outlet and a first drain outlet, and a heating device is further arranged on the inner side of the water tank; The water inlet of the first electromagnetic valve is connected with the hot water outlet of the water tank, and the water outlet of the first electromagnetic valve is connected with the first water outlet; The water inlet of the second electromagnetic valve is connected with the first drain outlet, and the water outlet of the second electromagnetic valve is connected with the second water outlet; The monitoring module is used for monitoring the duration of continuous closing of the first electromagnetic valve; The controller is used for controlling the second electromagnetic valve to be opened when the duration exceeds a preset duration, and controlling the second electromagnetic valve to be closed when the preset duration is not exceeded.

2. The drinking water apparatus of claim 1, wherein The monitoring module comprises a pressure sensor and a timer; The pressure sensor is arranged between the first electromagnetic valve and the first water outlet, and the timer is used for monitoring the duration of no pressure response of the pressure sensor.

3. The drinking water apparatus of claim 1, wherein, The drinking water equipment further comprises a third electromagnetic valve in communication connection with the controller; The water outlet of the third electromagnetic valve is connected with the water inlet of the water tank; The water inlet of the third electromagnetic valve is connected with the water inlet pipeline of the drinking water equipment.

4. The drinking water apparatus of claim 3, wherein The drinking water equipment further comprises a one-way valve; The water inlet of the one-way valve is connected with the water outlet of the third electromagnetic valve, and the water outlet of the one-way valve is connected with the water inlet of the water tank.

5. The drinking water apparatus of claim 3, wherein The drinking water equipment further comprises a water level sensor in communication connection with the controller; The water level sensor is arranged in the water tank, and is used for detecting the water level in the water tank and sending the detected water level to the controller; the controller is used for controlling the third electromagnetic valve to be closed when the water level in the water tank reaches a preset height.

6. The drinking water apparatus of claim 5, wherein The controller comprises a first control module and a second control module, and the first control module and the second control module are in communication connection; The first control module is in communication connection with the third electromagnetic valve, and the second control module is in communication connection with the second electromagnetic valve.

7. The drinking water apparatus of claim 1, wherein, The drinking water equipment further comprises a cooling device; The input end of the cooling device is connected with the water outlet of the second electromagnetic valve, and the output end of the cooling device is connected with the second water outlet.

8. The drinking water apparatus of claim 7, wherein, The cooling device comprises a semiconductor refrigeration sheet.

9. The drinking water apparatus of claim 1, wherein, The heating device is an electric heating tube.

10. The drinking water apparatus of any one of claims 1-9, wherein, The drinking water equipment further comprises a manual ball valve; The water tank is provided with a second drain outlet; The manual ball valve is connected with the second drain outlet.

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