CN217785503U - Cold water recovery device for solar water heater pipeline - Google Patents

Abstract

The utility model provides a cold water recovery device for a solar water heater pipeline, which includes a water storage tank, a valve group, a temperature sensor, a first liquid level switch and a controller. The water storage tank communicates with the solar water outlet pipeline through the first pipeline, and the valve group It includes a first solenoid valve, a first check valve, a Venturi tube ejector and three ball valves. The first solenoid valve is arranged on the first pipeline. It communicates with the water inlet pipe of the toilet through the second pipeline, and the inlet of the throat communicates with the bottom water outlet of the water storage tank through the third pipeline, and the first check valve is located on the third pipeline; the controller communicates with the first solenoid valve, temperature The sensor is connected to the first liquid level switch, and the temperature sensor is arranged at the water outlet of the first pipeline. The device of the utility model can store the cold water in the solar water supply pipe in the water storage tank, and use it for flushing the toilet through the Venturi tube jet, has low energy consumption, simple installation, and achieves the purpose of saving water.

Description

A solar water heater pipeline cold water recovery device

technical field

The utility model belongs to the technical field of household water heaters, in particular to a cold water recycling device for pipelines of solar water heaters.

Background technique

When using solar hot water, it is often necessary to let off part of the cold water before using the hot water. This not only wastes water, but also needs to constantly check the temperature of the water to determine when the cold water has run out, which is very inconvenient. At present, some of the existing pipeline cold water recovery devices use water pumps to return the cold water, and some use electric heaters to heat the cold water for use. Although this part of cold water can be recycled, it also increases the power load. Bring about the waste of energy.

Utility model content

Aiming at the above technical problems, the utility model provides a cold water recovery device for solar water heater pipelines, which can automatically collect cold water into the water tank through the controller, and stop releasing water after the water temperature reaches the set temperature, and then the solar energy can be directly used The hot water in the water storage tank will be used for flushing the toilet through a Venturi tube ejector. The device has low energy consumption, simple installation, water saving, and simple and convenient use.

In order to achieve the above object, the utility model adopts the following technical solutions:

A solar water heater pipeline cold water recovery device, including a water storage tank, a valve group, a temperature sensor, a first liquid level switch and a controller, the water storage tank communicates with the solar water outlet pipeline through the first pipeline, and the valve group includes The first solenoid valve, the first check valve, the Venturi tube ejector, the first ball valve, the second ball valve and the third ball valve, the first solenoid valve is arranged on the first pipeline, and the Venturi tube ejector The inlet of the inlet section is connected with the tap water pipe, the outlet end is connected with the water inlet pipe of the toilet through the second pipeline, the inlet of the throat is connected with the water outlet at the bottom of the water storage tank through the third pipeline, and the first check valve is located at the first On the three pipelines, the flow direction of the first check valve is the direction from the water storage tank to the Venturi tube ejector; the first ball valve is arranged on the first pipeline, on the side of the first solenoid valve away from the water storage tank, and the second ball valve Set on the third pipeline, on the side away from the first check valve away from the water storage tank, and the third ball valve is set on the discharge pipeline; the temperature sensor is set at the water outlet of the first pipeline, and the first liquid level switch is set On the water storage tank, the controller is connected with the first electromagnetic valve, the temperature sensor and the first liquid level switch.

Further, the device also includes a fourth pipeline and a second liquid level switch, the inlet end of the fourth pipeline communicates with the third pipeline through a tee, and the connection point between the fourth pipeline and the third pipeline Located on the side of the first check valve close to the water storage tank, a second check valve and a water pump are sequentially arranged on the fourth pipeline from the inlet end to the outlet end; the outlet end of the fourth pipeline is respectively connected to the fifth pipe through a tee. The road is connected with the water inlet pipeline of the pool, and the second solenoid valve and the first pressure switch are arranged on the fifth pipeline, and the second liquid level switch is connected with the water storage tank. The water pump, the second liquid level switch, the second solenoid valve and the The first pressure switches are respectively connected with the single-chip electromechanical of the controller, and the liquid level sensed by the second liquid level switch is lower than the liquid level sensed by the first liquid level switch.

Further, the device also includes a fourth pipeline and a second liquid level switch, the inlet end of the fourth pipeline communicates with the third pipeline through a tee, and the connection point between the fourth pipeline and the third pipeline Located on the side of the first check valve close to the water injection tank, a second check valve and a water pump are arranged in sequence on the fourth pipeline from the inlet end to the outlet end; A third solenoid valve and a tee are arranged at the end of the valve in turn, the outlet end of the fourth pipeline is connected to the tee on the second pipeline, the second liquid level switch is connected to the water storage tank, and the second pressure switch is connected to the fourth pipeline. , the second pressure switch, the second liquid level switch, the water pump and the third electromagnetic valve are respectively connected with the single-chip electromechanical of the controller, and the liquid level sensed by the second liquid level switch is lower than the liquid level sensed by the first liquid level switch.

Further, a discharge pipeline is connected to the end of the third pipeline close to the water storage tank, the water inlet of the discharge pipeline is located on the side of the check valve close to the water storage tank, and the outlet end of the discharge pipeline is connected to Drain hose.

Further, the discharge pipeline communicates with the third pipeline and the water storage tank through a tee.

Further, the first liquid level switch is set at 90% of the liquid level of the water storage tank.

Further, the controller also includes a control panel and a buzzer, and the control panel includes a display screen, a temperature setting key and an on/off key.

The valve group and the controller in the solar water heater pipeline cold water recovery device of the utility model are all highly integrated and installed on the water tank, and the whole device is generally installed in the cabinet of the bathroom washbasin, which is simple to install, easy to use, and low in energy consumption; The new type is not only suitable for solar water heater pipelines, but also suitable for domestic gas water heaters or electric water heaters that are far away from the bathroom.

The first ball valve in the first pipeline is a normally open valve, which is used for the maintenance of the first solenoid valve; the second ball valve in the second pipeline is used for the maintenance of the pipeline, and at the same time, it can be used when the system is not used for a long time. The second ball valve is closed to avoid the noise caused by the venturi ejector sucking air, and the first check valve is used to prevent tap water from backflowing into the water storage tank through the venturi ejector when the toilet stops water intake.

Description of drawings

Fig. 1 is the structural schematic diagram of the solar water heater pipeline cold water recovery device described in Embodiment 1 of the present utility model;

Fig. 2 is a structural schematic diagram of the solar water heater pipeline cold water recovery device described in Embodiment 2 of the utility model;

Fig. 3 is a schematic structural diagram of the solar water heater pipeline cold water recovery device described in Embodiment 3 of the present invention.

Among them, 1-water storage tank, 2-valve group, 3-controller, 4-first pipeline, 5 second pipeline, 6-discharge pipeline, 7-fourth pipeline, 8-fourth pipeline , 9-fifth pipeline, 21-venturi tube ejector, 22-first ball valve, 23-first solenoid valve, 24-second ball valve, 25-first check valve, 26-third ball valve, 31 -control panel, 32-temperature sensor, 33-first liquid level switch, 311-display screen, 312-temperature setting key, 313-opening key, 81-second check valve, 82-water pump, 83-second Solenoid valve, 84-first pressure switch, 85-second liquid level switch, 86-second pressure switch, 87-third solenoid valve.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

Example 1

A solar water heater pipeline cold water recovery device, including a water storage tank 1, a valve group 2, a temperature sensor 32, a first liquid level switch 33 and a controller 3, the water storage tank 1 is connected to the solar water outlet pipeline through the first pipeline 4 The valve group 2 includes a Venturi tube ejector 21, a first ball valve 22, a first solenoid valve 23, a second ball valve 24, a first check valve 25, and a third ball valve 26. The first solenoid valve 23 Located on the first pipeline 4, the entrance of the inlet section of the Venturi tube ejector 21 is communicated with the tap water pipeline, the outlet end is communicated with the water inlet pipe of the toilet through the second pipeline 5, and the entrance of the throat is communicated with the toilet through the third pipeline 7. The water outlet at the bottom of the water storage tank 1 is connected, and the first check valve 25 is arranged on the third pipeline 7. The flow direction of the first check valve 25 is the direction of the water storage tank 1 to the Venturi tube ejector 21; One end of the road 7 close to the water storage tank is connected with a discharge pipeline 6, the water inlet of the discharge pipeline 6 is located on the side of the first check valve 25 close to the water storage tank 1, and the discharge pipeline 6 is connected to the second through a tee. The pipeline 5 communicates with the water storage tank 1; the first ball valve 22 is arranged on the first pipeline 4, and is located on the side of the first solenoid valve 23 away from the water storage tank 1, and the second ball valve 24 is arranged on the third pipeline 7, located on the side of the first check valve 25 away from the water storage tank 1, the third ball valve 26 is located on the discharge pipeline 6; the controller 3 includes a control panel 31 and a buzzer (not marked in the figure Out), the temperature sensor 32 is set at the water outlet of the first pipeline 4, the first liquid level switch 33 is set at the 90% liquid level of the water storage tank 1, the first solenoid valve 23, the temperature sensor 32 and the liquid level switch 33 are connected to the controller 3; the control panel 31 includes a display screen 311, a temperature setting key 312 and a switch key 313.

The working process of the solar water heater pipeline cold water recovery device of the utility model is as follows: when using solar energy, turn on the controller, the controller opens the first solenoid valve, the solar water heater will discharge water to the water storage tank, the temperature sensor monitors the water temperature, and when the water temperature reaches the set value When the controller closes the first electromagnetic valve; the first liquid level switch monitors the water level in the storage tank, and if the first liquid level switch is triggered, the controller immediately closes the first electromagnetic valve. When the toilet is used, due to the reduced cross-sectional area of the throat of the Venturi tube ejector, the local flow velocity increases. According to Bernoulli's principle, a negative pressure is generated in the throat, thereby drawing cold water in the water storage tank into the toilet, so that there is no water pump. Under normal circumstances, the water in the water tank is used for toilet flushing. Since the volume of water drawn by the Venturi jet from the water storage tank accounts for about 40% of the total volume of the outlet water, in this case, the water in the tap water pipeline enters the toilet tank through the Venturi jet at the same time; The release pipeline can release part of the water in the water storage tank by means of a flexible pipe by opening the third ball valve for watering flowers or doing laundry.

Using the solar water heater pipeline cold water recovery device in this embodiment, calculated according to the height difference between the solar energy and the 5-story building of the user, about 10L of water needs to be released each time the solar energy is used, and the water tank is selected to be 30L to ensure a certain water storage capacity and reduce Possibility of filling the tank. According to the energy-saving toilet, each flush consumes 4L of water. According to the calculation of 3 people who use it twice a day, the water consumption is 24L per day. Among them, the water in the water tank extracted by the Venturi tube ejector accounts for 40%, that is, 9.6L, and it is used once a day. In the case of solar energy, the cold water can basically be used. Limited by weather factors, solar water cannot be used every day, but the use of the toilet is relatively stable. In addition, if you use part of the water in the water storage tank to do laundry, water flowers, etc., you can fully guarantee that the water tank will not be full Happening. In actual use, the size of the water tank can be reasonably designed according to each household's toilet usage, solar energy usage, solar cooling water volume, and personal preference.

In the case of a larger floor height difference or a higher frequency of solar energy use, a water pump can be selected to use the water in the water storage tank for the pool (Example 2) or for the toilet after the liquid level of the water tank reaches a certain height (Example 3).

Example 2

A solar water heater pipeline cold water recovery device, comprising a water storage tank 1, a valve group 2, a controller 3, a temperature sensor 32, a first liquid level switch 33, a fourth pipeline 7 and a second liquid level switch 85, the storage The water tank 1 communicates with the solar water outlet pipeline through the first pipeline 4, and the valve group 2 includes a Venturi tube ejector 21, a first ball valve 22, a first solenoid valve 23, a second ball valve 24, and a first check valve 25 , the third ball valve 26, the first solenoid valve 23 is located on the first pipeline 4, the entrance of the inlet section of the Venturi tube ejector 21 communicates with the tap water pipeline, and the outlet end passes through the second pipeline 5 and the inlet of the toilet The water pipe is connected, and the inlet of the throat is connected with the bottom water outlet of the water storage tank 1 through the third pipeline 7. The first check valve 25 is arranged on the third pipeline 7, and the flow direction of the first check valve 25 is the water storage tank 1. In the direction of the Venturi tube ejector 21; the end of the third pipeline 7 close to the water storage tank is connected with a discharge pipeline 6, and the water inlet of the discharge pipeline 6 is located at the first check valve 25 close to the water storage tank 1- side, the discharge pipeline 6 communicates with the second pipeline 5 and the water storage tank 1 through a tee; the first ball valve 22 is arranged on the first pipeline 4 and is located on the side of the first solenoid valve 23 away from the water storage tank 1 , the second ball valve 24 is set on the third pipeline 7, on the side of the first check valve 25 away from the water storage tank 1, the third ball valve 26 is set on the discharge pipeline 6; the fourth pipe The inlet end of the road 8 communicates with the third pipeline 7 through a tee, and the communication point between the fourth pipeline 8 and the third pipeline 7 is located on the side of the first check valve 25 close to the water storage tank 1. 8 is provided with the second check valve 81 and water pump 82 successively from the inlet end to the outlet end; Road 9 is provided with a second electromagnetic valve 83 and a first pressure switch 84, the second liquid level switch 85 is connected with the water storage tank 1, the water pump 82, the second liquid level switch 85, the second electromagnetic valve 83 and the first pressure The switches 84 are respectively connected with the single-chip electromechanical of the controller 3, and the liquid level sensed by the second liquid level switch 85 is lower than the liquid level sensed by the first liquid level switch 33; the controller 3 includes a control panel 31 and a buzzer (not shown in the figure), the temperature sensor 32 is set at the water outlet of the first pipeline 4, the first liquid level switch 33 is set at the 90% liquid level of the water storage tank 1, and the first electromagnetic The valve 23, the second solenoid valve 83, the temperature sensor 32, the first liquid level switch 33, the second liquid level switch 85, the first pressure switch 74, and the water pump 82 are all connected to the controller 3; the control panel 31 includes a display screen 311, a temperature setting key 312 and an on/off key 313.

The design of the fourth pipeline, the second check valve, the water pump, the fifth pipeline, the second solenoid valve, the second liquid level switch and the first pressure switch can realize that the water in the water storage tank can not only be used for toilet flushing It is also used for pool water. The principle is: when the water storage tank reaches a higher liquid level, the second liquid level switch is triggered at this time. After the controller receives the signal from the second liquid level switch, the second solenoid valve is closed, and the pool The water supply is switched from the water supply of the cold water main to the water supply of the water storage tank. The first pressure switch is used to control the operation of the pump. When the faucet of the pool is opened, the pressure of the fifth pipeline where the first pressure switch is located will decrease. The first pressure switch detects When a signal of low pressure is received and transmitted to the controller, the controller starts the pump. When this function is used, the venturi ejector will also work normally, supplying water from the storage tank to the toilet.

Example 3

A solar water heater pipeline cold water recovery device, comprising a water storage tank 1, a valve group 2, a controller 3, a temperature sensor 32, a first liquid level switch 33, a fourth pipeline 7 and a second liquid level switch 85, the storage The water tank 1 communicates with the solar water outlet pipeline through the first pipeline 4, and the valve group 2 includes a Venturi tube ejector 21, a first ball valve 22, a first solenoid valve 23, a second ball valve 24, and a first check valve 25 , the third ball valve 26, the first solenoid valve 23 is located on the first pipeline 4, the entrance of the inlet section of the Venturi tube ejector 21 communicates with the tap water pipeline, and the outlet end passes through the second pipeline 5 and the inlet of the toilet The water pipe is connected, and the inlet of the throat is connected with the bottom water outlet of the water storage tank 1 through the third pipeline 7. The first check valve 25 is arranged on the third pipeline 7, and the flow direction of the first check valve 25 is the water storage tank 1. In the direction of the Venturi tube ejector 21; the end of the third pipeline 7 close to the water storage tank is connected with a discharge pipeline 6, and the water inlet of the discharge pipeline 6 is located at the first check valve 25 close to the water storage tank 1- side, the discharge pipeline 6 communicates with the second pipeline 5 and the water storage tank 1 through a tee; the first ball valve 22 is arranged on the first pipeline 4 and is located on the side of the first solenoid valve 23 away from the water storage tank 1 , the second ball valve 24 is set on the third pipeline 7, on the side of the first check valve 25 away from the water storage tank 1, the third ball valve 26 is set on the discharge pipeline 6; the fourth pipe The inlet end of the road 8 communicates with the third pipeline 7 through a tee, and the communication point between the fourth pipeline 8 and the third pipeline 7 is located on the side of the first check valve 25 close to the water storage tank 1. 8 is provided with a second check valve 81 and a water pump 82 in turn from the inlet end to the outlet end; in the middle of the second pipeline 5, a third electromagnetic valve 87 and a third solenoid valve 87 are arranged in sequence from the Venturi tube diffuser 21 to the outlet end. The outlet end of the fourth pipeline 8 is connected to the tee on the second pipeline 5, the second liquid level switch 85 is connected to the water storage tank 1, and the second pressure switch 86 is connected to the fourth pipeline 8. The second pressure switch 86, the second liquid level switch 85, the water pump 82 and the third electromagnetic valve 87 are respectively connected with the single-chip electromechanical of the controller 3, and the liquid level height induced by the second liquid level switch 85 is lower than that sensed by the first liquid level switch 33. The liquid level height; the controller 3 includes a control panel 31 buzzer (not marked in the figure), the temperature sensor 32 is set at the water outlet of the first pipeline 4, and the first liquid level switch 33 Set at the 90% liquid level of the water storage tank 1, the first solenoid valve 23, the third solenoid valve 87, the temperature sensor 32, the first liquid level switch 33, the second liquid level switch 85, the first pressure switch 74, The water pumps 82 are all connected to the controller 3 ; the control panel 31 includes a display screen 311 , a temperature setting key 312 and an on/off key 313 .

The design of the fourth pipeline, the second liquid level switch, the second check valve, the water pump, the second pressure switch and the third solenoid valve can realize that when the water in the water storage tank is less, the water can pass through the Venturi ejector and tap water. The water in the pipeline is mixed and enters the toilet water tank. When there is a lot of water in the water storage tank, all the water in the water storage tank is used to supply the toilet water tank, which can speed up the consumption of water in the water storage tank. The principle is: when the water tank reaches a higher liquid level , at this time the second liquid level switch is triggered, the controller gets the signal of the second liquid level switch, closes the third electromagnetic valve, and the water supply of the toilet is switched from the water supply of the Venturi tube ejector to the direct water supply of the water storage tank. When the Venturi tube jet is used, the water drawn from the storage tank only accounts for 40% of the total water consumption of the toilet, and the direct water supply from the storage tank can increase the amount of water flowing from the storage tank to the toilet tank, and the second pressure switch is used to control the operation of the pump , when the toilet tank needs to replenish water, the pressure in the fourth pipeline where the second pressure switch is located will decrease, and the second pressure switch detects a signal of low pressure and transmits it to the controller, and the controller will start the pump. Venturi ejector does not work when function is used.

The above are only preferred implementations of the present utility model, and the scope of protection of the present utility model is not limited to the above-mentioned embodiments. Simple modifications, equivalent changes and modifications should all be regarded as the protection scope of the present utility model.

Claims (7)

1. A cold water recovery device for a solar water heater pipeline is characterized by comprising a water storage tank, a valve group, a temperature sensor, a first liquid level switch and a controller, wherein the water storage tank is communicated with a solar water outlet pipeline through a first pipeline; the first ball valve is arranged on the first pipeline and is positioned at one side of the first electromagnetic valve, which is far away from the water storage tank, the second ball valve is arranged on the third pipeline and is positioned at one side of the first check valve, which is far away from the water storage tank, and the third ball valve is arranged on the discharge pipeline; the temperature sensor is arranged at a water outlet of the first pipeline, the first liquid level switch is arranged on the water storage tank, and the controller is connected with the first electromagnetic valve, the temperature sensor and the first liquid level switch.

2. The cold water recovery device for the pipeline of the solar water heater according to claim 1, wherein the device further comprises a fourth pipeline and a second liquid level switch, an inlet end of the fourth pipeline is communicated with the third pipeline through a tee joint, a communication point of the fourth pipeline and the third pipeline is positioned on one side of the first check valve close to the water storage tank, and the fourth pipeline is sequentially provided with a second check valve and a water pump from the inlet end to the outlet end; the outlet end of the fourth pipeline is communicated with a fifth pipeline and a water tank water inlet pipeline through a tee joint respectively, a second electromagnetic valve and a first pressure switch are arranged on the fifth pipeline, a second liquid level switch is connected with the water storage tank, the water pump, the second liquid level switch, the second electromagnetic valve and the first pressure switch are electrically connected with a single chip microcomputer of the controller respectively, and the liquid level height sensed by the second liquid level switch is lower than the liquid level height sensed by the first liquid level switch.

3. The cold water recovery device for the pipeline of the solar water heater according to claim 1, further comprising a fourth pipeline and a second liquid level switch, wherein an inlet end of the fourth pipeline is communicated with the third pipeline through a tee joint, a communication point of the fourth pipeline and the third pipeline is positioned on one side of the first check valve close to the water injection tank, and the fourth pipeline is sequentially provided with a second check valve and a water pump from the inlet end to the outlet end; the third electromagnetic valve and the tee joint are sequentially arranged in the middle of the second pipeline from the venturi tube ejector to the outlet end, the outlet end of the fourth pipeline is connected with the tee joint on the second pipeline, the second liquid level switch is connected with the water storage tank, the fourth pipeline is connected with the second pressure switch, the second liquid level switch, the water pump and the third electromagnetic valve are respectively electrically connected with the single chip microcomputer of the controller, and the liquid level height sensed by the second liquid level switch is lower than that sensed by the first liquid level switch.

4. The cold water recovery device for the solar water heater pipeline according to any one of claims 1-3, wherein a discharge pipeline is communicated with one end of the third pipeline close to the water storage tank, a water inlet of the discharge pipeline is positioned at one side of the check valve close to the water storage tank, and a discharge hose is connected with an outlet end of the discharge pipeline.

5. The solar water heater pipeline cold water recovery device according to claim 4, wherein the discharge pipeline is communicated with the third pipeline and the water storage tank through a tee joint.

6. The cold water recovery device of the solar water heater pipeline is characterized in that the first liquid level switch is arranged at 90% of the liquid level of the water storage tank.

7. The cold water recovery device for the pipeline of the solar water heater according to claim 6, wherein the controller further comprises a control panel and a buzzer, and the control panel comprises a display screen, a temperature setting key and an on-off key.

Images