TWM600383U - Water saving device for external hanging type water heater - Google Patents

Abstract

A water-saving device for an external water heater is installed and connected to a water heater, and includes a body, a cold water pipeline, a heating device, a hot water pipeline, and a return pipeline. The two ends of the return pipeline are respectively connected to the cold water The pipeline and the hot water pipeline form a circulation loop. When the water temperature in the hot water pipeline does not reach a set temperature, the water flows in the circulation loop and is continuously heated by the heating device. When the water temperature in the hot water pipeline reaches the set temperature, one of the on-off valves in the hot water pipeline will be opened to allow hot water to flow out of the faucet.

Description

Water saving device for external water heater

This creation is related to water heaters, especially a water-saving device for external water heaters.

Water heaters are an indispensable device for bathing and can be roughly divided into gas water heaters and electric water heaters (the principle that gas water heaters and electric water heaters can heat cold water is well known and will not be repeated here).

The conventional water heater system diagram, as shown in Figure 1, includes a cold water pipe 1, a water heater 2, and a hot water pipe 3. One end of the cold water pipe 1 is connected to a tap water pipe (not shown) to introduce cold water into the water heater 2, and the hot water heated by the water heater 2 is exported from the hot water pipe 3, and the other end of the hot water pipe 3 is connected to a Faucet 4. When the user turns on the faucet 4, there will inevitably be a period of time before the cold water is discharged, mainly because there is always cold water between the hot water pipe 3 and the faucet 4, plus the unheated water in the water heater 52. The hot water will not flow out until the cold water flows out; most people don’t use cold water to bathe directly (especially in winter), so that the discharged cold water will waste water resources, especially when the faucet is set far away from the water heater. , The waste is particularly serious.

The reason is that the main purpose of this creation is to provide an external water heater water saving device, which can greatly reduce the waste of water resources caused by the cold water flowing out after the water heater is turned on.

In order to achieve the aforementioned creative purpose, the water-saving device for the externally mounted water heater provided by this creation is installed and connected to a water heater, which includes: a body with an accommodating space; and a cold water pipe arranged on the body with a A first end and a second end, the first end is connected to a tap water pipe, and the second end is connected to a water inlet of the water heater for sending cold water into the water heater for heating; a hot water pipe, It is provided on the body and has a first end and a second end, the first end is connected to a faucet, and the second end is connected to a water outlet of the water heater; a return line is provided in the accommodating space , It has a water inlet connected to the hot water pipeline, and a water outlet connected to the cold water pipeline, so that the return pipeline, the cold water pipeline, the water heater and the hot water pipeline form a circulation loop; The water pumping motor is arranged in the circulation circuit to make the water in the circulation circuit flow in the order of the return pipeline, the cold water pipeline, the water heater and the hot water pipeline; an on-off valve is arranged in the heat In the water pipeline, and at a predetermined position between the water inlet end of the return pipeline and the faucet; a temperature sensor is provided in the hot water pipeline to detect the water temperature in the hot water pipeline; A controller, arranged on the body, the controller electrically connected to the pumping motor, the on-off valve and the temperature sensor; and a control panel, electrically connected to the controller, having a start switch; Accordingly, when the activation switch is turned on, the controller will activate the pumping motor to circulate water in the circulation loop, and cause the water heater to start heating water until the temperature of the water detected by the temperature sensor When the temperature is equal to or greater than a set temperature, the controller will open the on-off valve and stop the pumping motor. At this time, when the user opens the faucet, hot water will flow out of the faucet through the on-off valve.

In one embodiment, the on-off valve is a normally closed on-off valve.

In an embodiment, the temperature sensor is arranged near the water inlet end of the return line.

In one embodiment, the control panel further has a temperature display for displaying the water temperature detected by the temperature sensor.

In one embodiment, the temperature display has a display for displaying the water temperature value.

In one embodiment, the control panel further has an adjustment unit for the user to set the set water temperature and store the set water temperature in the controller.

In one embodiment, the control panel further has a temperature display for displaying the set water temperature.

In one embodiment, the temperature display has a display for displaying the set water temperature value.

In one embodiment, the pumping motor is provided in the return line.

The above technical means can solve the shortcoming of the conventional water heater that wastes a lot of water resources. Using the return pipeline of this creation, when the set water temperature is not reached, the water is returned to the heating device to be heated again until the set water temperature. It is provided for users to use, and there is no need to replace a new water heater. As long as the original water heater is installed with this creative device, it can provide the effect of saving water resources. Therefore, this creation not only solves the shortcomings of conventional water heaters that waste water resources, but also facilitates installation through its innovative structure and increases competitiveness.

In accordance with the purpose and effect of this creation, the following is a detailed description of the preferred embodiments with the drawings.

In accordance with the purpose and effect of this creation, the following is a detailed description of the preferred embodiments with the drawings.

Please refer to Figures 2, 3, and 4, the water-saving device 10 for an external water heater provided by a preferred embodiment of this creation is installed and connected to a water heater 2, which was originally used at home by the user The water heater can be a well-known gas water heater, electric water heater or any type of heating device, and has a water inlet 201 and a water outlet 202 (the structure and action of the gas water heater, electric water heater or any type of heating device The principle is well-known, so I won’t repeat it here); the water-saving device 10 of the external water heater of this creation mainly includes: a body 11, a cold water pipe 12, a hot water pipe 13, a return pipe 14, and a water pump The motor 15, an on-off valve 16, a temperature sensor 17, a controller 18 and a control panel 19. among them

The main body 11 has an accommodation space 111 of an appropriate size.

The cold water pipe 12 is disposed in the body 11, and a part is in the accommodating space 111. The two ends of the cold water pipe 12 are defined as a first end 121 and a second end 122. The first end 121 is connected to a tap water pipe 5, and the second end 122 is connected to the water inlet 201 of the water heater 2 for sending cold water into the water heater 2 for heating; in this embodiment, the first cold water pipe 12 is The end 121 and the second end 122 protrude out of the main body 11 to facilitate installation and make the assembly of the cold water pipe 12 with the water heater 2 and the tap water pipe 5 more convenient; of course, the cold water pipe The two ends of the road 12 can also be just close to the end sides of the body 11, and then a pipeline (not shown) connected to the water inlet 201 of the water heater 2 and the tap water pipeline 5 can directly extend into the The main body 11 is connected to the cold water pipeline 12, which is a general technology and will not be shown separately in figures.

The hot water pipe 13 is disposed in the main body 11, and a part of it is in the accommodating space 111. The two ends of the hot water pipe 13 are defined as a first end 131 and a second end 132. The first end 131 is connected to a faucet 4, and the second end 132 is connected to a water outlet 202 of the water heater 2; the cold water introduced through the cold water pipe 12 and the water inlet 201 of the water heater 2 enters the heated heat of the water heater 2 The water then flows out through the water outlet 202 of the water heater 2 and the hot water pipe 13, and the first end 131 of the hot water pipe 13 is connected to a faucet 4 for the user to operate to take hot water; similarly, In this embodiment, the first end 131 and the second end 132 of the hot water pipe 13 extend out of the body 11, which can facilitate the connection with the water heater 2 and the faucet 4, and of course the hot water pipe The two ends of the road 13 can also be just close to the end sides of the main body 11. The water outlet 202 of the water heater 2 and a pipe connected to the faucet 4 can be directly extended into the main body 11 and the hot water pipe Road 13 connection (general technology, not shown separately in diagrams).

The return pipe 14 is arranged in the accommodating space 111 of the body 11, and has a water inlet 141 and a water outlet 142. The water inlet 141 is connected to the hot water pipe 13, and the water outlet 142 is connected To the cold water pipe 12, the return pipe 14, the cold water pipe 12, the water heater 2 and the hot water pipe 13 form a circulation loop.

The water pumping motor 15 is installed in the return line 14, and pumps water in the return line 14 from the water inlet 141 to the water outlet 142.

The switch valve 16 is arranged in the hot water pipeline 13 and is located at a predetermined position between the water inlet 141 of the return pipeline 14 and the faucet 4. In this embodiment, the on-off valve 16 is a normally closed on-off valve, which is closed (OFF) in a normal state, and turns to an open (ON) state after receiving a signal. In the normal state, the on-off valve 16 is In a closed state, the pumping motor 15 is in a stopped state, and the water heater 2 is in a standby state.

The temperature sensor 17 is installed in the hot water pipe 13 to detect the temperature of the water in the hot water pipe 13. In this embodiment, the temperature sensor 17 is arranged near the water inlet 141 of the return line 14.

The controller 18 is electrically connected to the pumping motor 15, the on-off valve 16 and the temperature sensor 17. The controller 18 receives the temperature signal from the temperature sensor 17, and controls the temperature signal according to the temperature signal. The opening and closing of the on-off valve 16 and the opening or stopping of the pumping motor 15. In this embodiment, the controller 18 is disposed outside the main body 11.

The control panel 19 is electrically connected to the controller 18. The control panel 19 has a start switch 191 and a temperature display. When the user turns on the activation switch 191, the controller 18 will activate the pumping motor 15. In this embodiment, the temperature display has a display 192, which displays the water temperature value according to the temperature signal of the temperature sensor 17. The control panel 19 further has an adjustment unit 193 for the user to adjust a set water temperature, and the set water temperature is displayed on the display 192 and stored in the controller 18. The user can set the set water temperature in advance. To further illustrate, in this embodiment, the control panel 19 is installed on the outer surface of the main body 11. Of course, in the actual embodiment, the control panel 19 can be installed in a bathroom (not shown) to facilitate The user adjusts the water temperature according to the climate.

Please refer to Figure 5, when in use, the user presses the start switch 191, and the controller 18 will start the pumping motor 15 at this time, so that the water flows from the return line 14, the cold water line 12, the The water heater 2, the hot water pipe 13, and the return pipe 14 circulate in the circulation loop, and cause the water heater 2 to start heating water. In addition, a check valve 143 is provided in the circulation loop to prevent the water in the circulation loop from flowing in the opposite direction.

At this time, the temperature sensor 17 continuously senses the water temperature, and displays the water temperature on the display 192 of the control panel 19 through the controller 18. When the detected water temperature is equal to or greater than the set temperature, the controller 18 will stop the water pumping motor 15 and open the on-off valve 16. At this time, when the user opens the faucet 4, please refer to Figure 6, the hot water will flow out of the faucet 4 through the on-off valve 16, and the user can get hot water at the set water temperature .

When the user closes the faucet 4, the water flow in the pipeline stops, causing the water heater 2 to stop and no longer heat water. At this time, the temperature of the water in the pipelines will slowly decrease. When the water temperature sensed by the temperature sensor 17 is lower than the set temperature, the controller 18 will restart the pumping motor 15 and close the on-off valve 16 to make the water circulate in the circulation loop again. And continue to enter the water heater 2 to be heated until the water temperature sensed by the temperature sensor 17 is greater than or equal to the set temperature, the controller 18 stops the pumping motor 15 and opens the on-off valve 16, waiting The user turns on the faucet 4 to use hot water.

When the user presses the start switch 191 again, or the faucet 4 is turned off for a predetermined period of time (for example, 15 minutes), the controller 18 will stop the operation of the pumping motor 15, the on-off valve 16, and the temperature sensor 17. The water-saving device 10 for the external water heater of the invention is turned off until the user presses the start switch 191 next time.

With the above structure, when the user installs the external water heater water saving device 10 of this creation on the water heater 2 used at home, the user can quickly get hot water with the set temperature after turning on the faucet 4 , The wasted cold water only exists in the water between the on-off valve 16 and the faucet 4, which greatly reduces the waste of water caused by the cold water flowing out after the conventional water heater 2 is turned on. When the water temperature does not reach the set temperature, the cold water will Circulate in the circulation loop of the aforementioned creation, so that the time required for heating the water heater 2 can be shortened, and as long as the original creation device is installed on the original water heater 2 without replacing the new water heater 2, the installation is convenient and trouble-free. Can achieve the creative purpose of the cost creation expectations.

The above are the preferred embodiments and design drawings of this creation, but the preferred embodiments and design drawings are only examples and are not used to limit the scope of rights of this creation technique. Any equivalent technique means or the following The implementation of the scope of rights covered by the content of the "Scope of Patent Application" does not depart from the scope of this creation but is the scope of the applicant's rights.

＜This creation＞ 10: External water heater water saving device 11: body 111: housing space 12: Cold water pipeline 121: first end 122: second end 13: Hot water pipe 131: first end 132: second end 14: Return line 141: water inlet 142: Water End 143: Check valve 15: Water pump motor 16: On-off valve 17: Temperature sensor 18: Controller 19: Control Panel 191: Start switch 192: display 193: adjustment unit ＜Used＞ Road 1: cold water pipe 2: water heater 201: water inlet 202: water outlet 3: Hot water pipeline 4: Faucet 5: Tap water pipeline

Figure 1 is a schematic diagram of a conventional water heater system. Figure 2 is a schematic diagram of a three-dimensional appearance of a preferred embodiment of the invention. Figure 3 is a schematic diagram of the installation and connection of a water heater of a preferred embodiment of this creation. Figure 4 shows the cold water pipe, the hot water pipe, the return pipe, the pumping motor, the on-off valve, the temperature sensor, the controller, and the control panel of a preferred embodiment of this creation The structure diagram. Figure 5 is a schematic diagram of a preferred embodiment of this creation, showing the water flow state when the water temperature has not reached the set temperature. Figure 6 is a schematic diagram of a preferred embodiment of this creation, showing the water flow state when the water temperature reaches the set temperature.

10: External water heater water saving device

11: body

12: Cold water pipeline

21: first end

122: second end

13: Hot water pipe

131: first end

132: second end

18: Controller

19: Control Panel

191: Start switch

192: display

193: adjustment unit

Claims (10)

A water-saving device for an external water heater, installed and connected to a water heater, and comprising: A body with a containing space; A cold water pipeline is arranged on the body and has a first end and a second end. The first end is connected to a tap water pipeline, and the second end is connected to an inlet of the water heater for sending cold water Enter the water heater for heating; A hot water pipe, arranged on the body, having a first end and a second end, the first end is connected to a faucet, and the second end is connected to a water outlet of the water heater; A return pipeline is arranged in the accommodating space. It has an inlet end connected to the hot water pipeline, and an outlet end connected to the cold water pipeline so that the return pipeline, the cold water pipeline, and the The water heater and the hot water pipeline form a circulation loop; A water pumping motor arranged in the circulation circuit to make the water in the circulation circuit flow in the order of the return pipe, the cold water pipe, the water heater and the hot water pipe; An on-off valve arranged in the hot water pipeline and located at a predetermined position between the water inlet end of the return pipeline and the faucet; A temperature sensor is installed in the hot water pipe to detect the water temperature in the hot water pipe; A controller arranged on the body, the controller electrically connected to the pumping motor, the on-off valve and the temperature sensor; and A control panel, electrically connected to the controller, with a start switch; Accordingly, when the activation switch is turned on, the controller will activate the pumping motor to circulate water in the circulation loop, and cause the water heater to start heating water until the temperature of the water detected by the temperature sensor When the temperature is equal to or greater than a set temperature, the controller will open the on-off valve and stop the pumping motor. At this time, when the user opens the faucet, hot water will flow out of the faucet through the on-off valve. According to claim 1, the water-saving device for an external water heater, wherein the on-off valve is a normally closed on-off valve. According to claim 1, the water-saving device for an external water heater, wherein the temperature sensor is arranged near the water inlet end of the return line. According to the water-saving device for an external water heater according to claim 1, wherein the control panel further has a temperature display for displaying the water temperature detected by the temperature sensor. According to claim 4, the water-saving device for an external water heater, wherein the temperature display has a display for displaying the water temperature value. The water-saving device for an external water heater according to claim 1, wherein the control panel further has an adjustment unit for the user to set the set water temperature and store the set water temperature in the controller. According to claim 6, the water saving device for an external water heater, wherein the control panel further has a temperature display for displaying the set water temperature. The water-saving device for an external water heater according to claim 7, wherein the temperature display has a display for displaying the set water temperature value. According to claim 1, the water-saving device for an external water heater, wherein the control panel is arranged on the outer surface of the body. The water saving device for an external water heater according to claim 1, wherein the water pumping motor is arranged in the return line.

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