CN209040196U - An intelligent water-saving device for household gas water heater - Google Patents

Abstract

The utility model relates to the technical field of gas water heaters, and discloses an intelligent water-saving device for household gas water heaters, comprising: a cold water storage tank, a floating ball liquid level switch, a first connection head and a second connection head arranged on the cold water storage tank, and further It includes a first water outlet pipe, a first water inlet pipe, a temperature sensor and a control system. The first water outlet pipe is provided with a check valve, the temperature sensor is arranged on the second water outlet pipe, the first water inlet pipe is provided with a cold water valve, and the second water outlet pipe The water outlet pipe is connected to the gas water heater, the third water outlet pipe is provided with a hot water valve, the cold water pipe is connected to the mixing valve, the float level switch, the temperature sensor, the water inlet valve, the cold water valve and the hot water valve are respectively connected with the electrical signal of the control system Connection, the intelligent water-saving device for household gas water heaters realizes the saving and reuse of cold water for household gas water heaters.

Description

An intelligent water-saving device for household gas water heater

technical field

The utility model relates to the technical field of gas water heaters, in particular to an intelligent water-saving device for domestic gas water heaters.

Background technique

From the 1970s to the present, the production and sales of gas water heaters in my country have achieved great development. Gas water heaters have quickly occupied the market with their advantages of safety, rapid heating, energy saving, economy, and no water limit. Of course, gas water heaters also have unavoidable shortcomings. First of all, they should not be installed in the bathroom or far away from the kitchen, because the gas pipeline is set in the kitchen. If the bathroom is far from the kitchen and the hot water pipeline is too long, it will consume a lot in vain. of ineffective cold water.

In addition, during the bathing process, if the user temporarily turns off the shower and then turns it on again, the water temperature will fluctuate from cold to hot. This problem is slightly better in the south, but the comfort of bathing can still be poor, and the problem is more acute in the north, where the winter temperature is lower. In view of this, an intelligent water-saving device for gas water heaters is researched and designed, which overcomes the problems of uneven heating and cooling and waste of cold water in the early stage of bathing.

Utility model content

The utility model provides an intelligent water-saving device for a domestic gas water heater, which can solve the above problems in the prior art.

The utility model provides an intelligent water-saving device for a household gas water heater, comprising: a cold water storage tank, a floating ball liquid level switch, a first connecting head and a second connecting head on the cold water storage tank, and a first water outlet pipe, The first water inlet pipe, the temperature sensor and the control system, one end of the first water outlet pipe is connected with the first connector, the other end of the first water outlet pipe is connected with the second water inlet pipe through the first three-way joint, and the first water outlet pipe is provided with There is a check valve, the first three-way joint is connected with the toilet fittings through the second water inlet pipe, one end of the first water inlet pipe is connected with the cold water storage tank through the second connecting head, and the other end of the first water inlet pipe is connected with the second three-way joint. It is connected with the second water outlet pipe, the temperature sensor is arranged on the second water outlet pipe, the first water inlet pipe is provided with a cold water valve, the second water outlet pipe is connected to the gas water heater, and the second three-way joint is connected to the water mixing valve through the third water outlet pipe. , There is a hot water valve on the third outlet pipe, the cold water pipe is connected with the mixing valve, the mixing valve is connected with the shower, the float level switch, the temperature sensor, the water inlet valve, the cold water valve and the hot water valve are respectively connected with the control System electrical signal connections.

The control system includes: a single chip microcomputer, a digital display, a plurality of key switches and indicator lights, a temperature sensor, a digital display, a plurality of key switches, an indicator light, a float level switch, a water inlet valve, and a cold water valve and a hot water valve, respectively. Connect with the single-chip electrical signal.

An exhaust valve is provided on the cold water storage tank.

The temperature sensor, digital display, multiple key switches, indicator lights, floating ball liquid level switch, water inlet valve, cold water valve, hot water valve and single-chip microcomputer all use 24V DC power supply.

It also includes a liquid level alarm, which is connected with the single-chip microcomputer.

The float level switch is a double float level switch.

Compared with the prior art, the beneficial effects of the present utility model are:

1. Realize the recovery and reuse of the cold water outflow from the gas water heater, and provide bath water at a comfortable temperature.

2. The water outlet pipe of the cold water storage tank in the reuse device is organically combined with the water inlet pipe of the toilet tank, which does not damage the original structure of the toilet, which is novel and unique.

3. The temperature control system realizes the automatic switching of hot and cold water between the water storage tank, toilet tank and shower, which is practical and convenient.

The device realizes the saving and reuse of cold water for domestic gas water heaters, avoids the waste of cold water from the shower first, and improves the comfort of bathing water. The saved cold water can be used for flushing toilets. application prospects.

Description of drawings

FIG. 1 is a schematic structural diagram of an intelligent water-saving device for a domestic gas water heater provided by the utility model.

Fig. 2 is a circuit schematic block diagram of an intelligent water-saving device for a domestic gas water heater provided by the utility model.

Description of reference numbers:

1-float level switch, 2-exhaust valve, 3-first connector, 4-toilet fittings, 5-first three-way connector, 6-water inlet valve, 7-check valve, 8-second Inlet pipe, 9-cold water valve, 10-hot water valve, 11-mixing valve, 12-gas water heater, 13-shower, 14-control system, 15-cold water pipe, 16-second connector, 17-section Two-way joint, 18-first outlet pipe, 19-first inlet pipe, 20-second outlet pipe, 21-third outlet pipe, 22-temperature sensor, 23-key switch.

Detailed ways

A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

As shown in FIGS. 1 and 2 , an intelligent water-saving device for a domestic gas water heater provided by an embodiment of the present invention includes: a cold water storage tank, a floating ball liquid level switch 1 on the cold water storage tank, and a first connector 3 and the second connection head 16, and also includes a first water outlet pipe 18, a first water inlet pipe 19, a temperature sensor 22 and a control system 14, one end of the first water outlet pipe 18 is connected to the first connection head 3, and the first water outlet pipe 18 The other end is connected to the second water inlet pipe 8 through the first three-way joint 5 , the first water outlet pipe 18 is provided with a check valve 7 , and the first three-way joint 5 is connected to the toilet fitting 4 through the second water inlet pipe 8 . One end of the water inlet pipe 19 is communicated with the cold water storage line through the second connector 16 , the other end of the first water inlet pipe 19 is communicated with the second water outlet pipe 20 through the second three-way joint 17 , and the temperature sensor 22 is arranged on the second water outlet pipe 20 The first water inlet pipe 19 is provided with a cold water valve 9, the second water outlet pipe 20 is connected to the gas water heater 12, the second three-way joint 17 is connected to the mixing valve 11 through the third water outlet pipe 21, and the third water outlet pipe 21 is provided with There is a hot water valve 10, a cold water pipe 15 is connected to the mixing valve 11, the mixing valve 11 is connected to the shower 13, a float level switch 1, a temperature sensor 22, a water inlet valve 6, a cold water valve 9 and a hot water valve 10 They are respectively connected with the control system 14 for electrical signals.

The height of the cold water storage tank is higher than the height of the toilet tank.

In the present invention, a temperature sensor is arranged on the second water outlet pipe 20 to detect the temperature in the second water outlet pipe 20, and the bath temperature can be preset through the button switch 23 in advance. When the temperature in the second water outlet pipe 20 is low When the set value is reached, the control system 14 controls the cold water valve 9 to open, the hot water valve 10 to close, and the cold water enters the cold water storage tank through the first water inlet pipe 19. When the temperature in the second water outlet pipe 20 reaches the set value, it controls the The system 14 controls the cold water valve 9 to close, the hot water valve 10 to open, and the hot water enters the shower 13 through the third water outlet pipe 21 .

The utility model detects the water level in the cold water storage tank through the float level switch 1. When the water level is higher than the set minimum water level, the control system controls the cold water valve 6 to close, and when the toilet is short of water, the cold water passes through the first water outlet pipe 18. Entering the toilet tank, at this time, the cold water in the cold water storage tank is preferentially used for toilet flushing. When the water level is lower than the set minimum water level, the control system controls the cold water valve 6 to open, and when the water level reaches the set maximum water level, control The system controls the cold water valve 9 to be closed, the hot water valve 10 to be opened, and the cold water enters the shower 13 from the third water outlet pipe 21 and flows out. At this time, the system indicator light will indicate that the water storage tank is full. Since the design of the water storage tank is reasonable and large enough, this situation Usually it doesn't happen.

As shown in FIG. 2, the control system includes: a single-chip microcomputer, a digital display, an indicator light and a plurality of key switches 23, a temperature sensor, a digital display, an indicator light, a plurality of key switches 23, a float level switch 1, a water inlet valve 6, The cold water valve 9 and the hot water valve 10 are respectively connected with the single chip electrical signal.

An exhaust valve 2 is provided on the cold water storage tank, and the exhaust valve 2 enables the gas to be discharged smoothly when water is stored without affecting the amount of water stored.

It also includes a liquid level alarm. The liquid level alarm is connected to the single-chip microcomputer. When the float level switch 1 detects that the water in the cold water storage tank exceeds the set maximum water level, the single-chip microcomputer controls the liquid level alarm to give an alarm, reminding people to open the mixer. The water valve 11 drains water through the shower or shuts off the gas water heater 12 .

The temperature sensor, digital display, indicator light, multiple key switches 23, float level switch 1, water inlet valve 6, cold water valve 9, hot water valve 10 and the single-chip microcomputer all use 24V DC power supply, and the 24V DC power is powered by a switching power supply. Direct power supply can prevent accidental electric leakage from causing danger.

The float level switch 1 is a double float level switch.

System Workflow

When taking a bath, turn on the gas water heater 12, and the cold water in the pipeline begins to flow out. When it flows through the temperature sensor, the temperature sensor 22 transmits the cold water temperature information to the single chip microcomputer, and the single chip computer sends instructions to the cold water valve 9 and the hot water valve 10. The first water inlet pipe 19 The cold water valve 9 and the hot water valve 10 on the third water outlet pipe 21 form a reversing control system controlled by a single-chip microcomputer through the open and closed state, and connect the cold water in the water pipeline with the cold water storage tank; the gas water heater 12 heats When the water temperature reaches the set suitable bath temperature after a period of time, after the hot water in the second water outlet pipe 20 flows through the temperature sensor, the temperature sensor 22 transmits the information of the hot water to the single-chip computer, and the single-chip computer sends the instruction to the cold water valve 9 The two solenoid valves, the hot water valve 10 and the hot water valve, use the reversing system to connect the hot water in the water pipeline to the shower, and directly supply it for bathing, thus completing the basic goals of cold water recovery and hot water bathing in the entire temperature control system. . The cold water storage tank used to recover cold water feeds the water to the toilet tank for flushing. After the toilet is flushed and used, by closing the water inlet valve 6 at the bottom of the toilet, the cold water storage tank preferentially supplies water to the toilet. When there is no water in the box, that is, when the low-position floating ball falls, it will transmit information to the single-chip microcomputer. When the single-chip microcomputer opens the water inlet valve at the bottom of the device, water is supplied by the water supply system in the toilet box, and the water level is normally controlled by the toilet accessories, so as to ensure the normal use of the toilet and realize the automatic flushing function of the toilet.

How to use and how it works:

Due to the special working method of the gas water heater, the water first circulates before ignition and heating, and a certain amount of cold water in the pipeline will be wasted by the shower 13. Add a solenoid valve and a temperature sensor to the hot water delivery pipe of the gas water heater, and the water first flows through the temperature Sensor 22, the temperature sensor 22 sends a signal to the single-chip microcomputer, and the single-chip computer judges whether the water temperature meets the requirements, and then transmits the instruction to the cold water valve 9 and the hot water valve 10, and sends the hot water that meets the bath temperature requirements through the third water outlet pipe 21. The shower 13 is normally used for bathing, and the cold water with insufficient water temperature will enter the cold water storage tank through the first water inlet pipe 19 for collection and reuse, as shown in FIG. 1 .

The control system is installed in the electric control box, which protects the electronic equipment on the one hand, and makes the whole set more beautiful on the other hand. The wires, etc. are placed in the trunking, which is both waterproof and neat.

The cold water storage tank will temporarily collect cold water with insufficient temperature. It is connected to the cold water pipe of the gas water heater 12, and the other side is connected to the toilet tank to realize the reuse of cold water. The cold water storage tank is equipped with a double float type level switch. , The floating ball located on the upper part of the cold water storage tank can prevent the cold water storage tank from entering too much water and cause overflow or system paralysis. When the limited water level is reached, the single-chip microcomputer controls the hot water valve 10 on the pipeline leading to the shower to open, and the cold water valve 9 on the pipeline leading to the cold water storage tank is automatically closed. Usually it does not happen, but for insurance, a special safety device is added. The safety device can also generate an alarm for the abnormal signal sent by the float switch. For example, misleading signals caused by obstacles in the high position float and the low position float.

The cold water reuse part is composed of the toilet tank, toilet accessories 4, water inlet valve 6, float level switch, check valve 7, etc. The water inlet valve 6 is set on the second water inlet pipe 8 of the toilet tank, and the water inlet valve is installed on the second water inlet pipe 8 of the toilet tank. A first three-way joint 5 is installed on the 6, and the first outlet pipe 18 for bathing cold water from the cold water storage tank is connected to the first three-way joint 5, and a check valve 7 is added in front of the first three-way joint 5. , to prevent the water from flowing back into the cold water storage tank when the toilet is filled with pressurized water. When there is water in the cold water storage tank, the water level in the cold water storage tank is higher than the float switch at the low position, the water inlet valve 6 is closed, and the water in the cold water storage tank is preferentially used to fill the toilet. When the low-position float falls, the float-type liquid level switch 1 set in the cold water storage tank will transmit information to the single-chip microcomputer, open the water inlet valve 6, and then be replenished by the water inlet at the bottom of the toilet. When the water volume is sufficient, the water level is controlled by the toilet accessory 4 to realize automatic water filling of the toilet. The system is shown in Figure 1.

The utility model uses the electronic control technology to set the water flowing out of the shower head of the water heater to a preset comfortable temperature instead of conventional cold water. The intelligent control system has a good water-saving effect and is economical and practical, which conforms to the current design concept of green and environmental protection in urban life and the requirements of the era of water conservation.

The device realizes the saving and reuse of cold water for domestic gas water heaters, avoids the waste of cold water from the shower first, and improves the comfort of bathing water. The saved cold water can be used for flushing toilets. application prospects.

The above disclosures are only a few specific embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims (6)

1. An intelligent water-saving device for a domestic gas water heater, characterized in that it comprises: a cold water storage tank, a floating ball liquid level switch (1), a first connector (3) and a second connector ( 16), further comprising a first water outlet pipe (18), a first water inlet pipe (19), a temperature sensor (22) and a control system (14), one end of the first water outlet pipe (18) is connected to the first connector (3) connection, the other end of the first water outlet pipe (18) is connected with the second water inlet pipe (8) through the first three-way joint (5), the first water outlet pipe (18) is provided with a check valve (7), the first water outlet pipe (18) is provided with a check valve (7), the first The tee joint (5) is connected to the toilet fitting (4) through the second water inlet pipe (8), one end of the first water inlet pipe (19) is connected to the cold water storage tank through the second connection head (16), and the first water inlet pipe ( The other end of 19) is communicated with the second water outlet pipe (20) through the second tee joint (17), the temperature sensor (22) is arranged on the second water outlet pipe (20), and the first water inlet pipe (19) is provided with The cold water valve (9), the second water outlet pipe (20) is connected to the gas water heater (12), the second three-way joint (17) is connected to the mixing valve (11) through the third water outlet pipe (21), and the third water outlet pipe ( 21) is provided with a hot water valve (10), the cold water pipe (15) is connected with the water mixing valve (11), the mixing valve (11) is connected with the shower (13), the float level switch (1), the temperature The sensor (22), the water inlet valve (6), the cold water valve (9) and the hot water valve (10) are respectively connected with the control system (14) by electrical signals. 2. The intelligent water-saving device for a domestic gas water heater according to claim 1, wherein the control system comprises: a single chip microcomputer, a digital display, an indicator light and a plurality of key switches (23), a temperature sensor, a digital display, an indicator The lamp, a plurality of key switches, a floating ball liquid level switch (1), a water inlet valve (6), a cold water valve (9) and a hot water valve (10) are respectively connected with the single chip electrical signal. 3. The intelligent water-saving device for a domestic gas water heater according to claim 1, wherein an exhaust valve (2) is provided on the cold water storage tank. 4 . The intelligent water-saving device for domestic gas water heaters according to claim 1 , further comprising a liquid level alarm, which is connected to the single-chip microcomputer. 5 . 5. The intelligent water-saving device for a domestic gas water heater according to claim 1, wherein the temperature sensor, a digital display, an indicator light, a plurality of key switches (23), a float level switch (1), an input The water valve (6), the cold water valve (9), the hot water valve (10) and the single-chip microcomputer are all powered by 24V direct current. 6. The intelligent water-saving device for a domestic gas water heater according to claim 1, wherein the float level switch (1) is a double float level switch.