Domestic water system

Abstract

The utility model relates to a domestic water system, a tap water meter home-entry end or a home-entry pipeline of the domestic water system is provided with an automatic water replenishing valve and a buffer water tank, and when a domestic water facility is put into use, the buffer water tank supplies water to the water facility through an indoor water supply pipeline. When the water level of the automatic water replenishing valve in the buffer water tank is at a set low water level, the automatic water replenishing valve is opened to feed water, and when the water level of the buffer water tank reaches a set high water level, the automatic water replenishing valve is closed to stop water replenishing. An automatic water replenishing valve, a buffer water tank, a purifier and a hot water system zero cold water discharge technology are adopted, the influence of water pressure and water quantity fluctuation on the precision of a main water supply pipeline and a household tap water meter during household water using is effectively eliminated, the tap water meter is high in metering accuracy, and the system is high in universality and high in practicability. The system can be effectively used for newly building a domestic water system and transforming a traditional domestic water system, and has great social and economic significance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of domestic water, and in particular to a domestic water system adopting an automatic water inlet valve, a buffer water tank, a water purifier and a hot water system zero cold water discharge technology. BACKGROUND

[0002] With the improvement of people's living standards, the demand for the quality of life is also getting higher and higher, such as the demand for the improvement of water quality, the demand for comfort when using hot water, the demand for zero cold water discharge when using hot water system, and the demand for saving and warmth.

[0003] For domestic hot water, a single pipe hot water supply is generally used, which has the characteristics of convenient installation and low cost, and the current industry construction safety technical specification has been formed. However, when the hot water supply single pipe line is long, the cold water remaining in the hot water supply pipeline needs to be discharged before using hot water, which is not convenient for collection and use, and direct discharge is a waste. For the whole society, "accumulating sand into a tower and collecting a sleeve into a coat", which will inevitably cause great waste of fresh water resources.

[0004] For the problem of cold water discharge of hot water supply system, there are currently many solutions and good implementation effects, such as remote temperature control valve and backwater device installed at the water heater, pipe-in-pipe hot water supply system, etc. However, the remote temperature control valve and the backwater device installed at the water heater need to be linked to start and stop the remote control, which is not convenient for installation and operation. The implementation effect of the pipe-in-pipe system is very good, but the installation is not convenient, the cost is increased, and it is difficult to popularize and apply in ordinary families.

[0005] The tap water used in the existing domestic water system will inevitably have problems such as corrosion and bacterial growth in the water supply pipeline, so the water quality may be poor when it reaches the domestic water end, and the water needs to be purified.

[0006] Domestic water has randomness, temporality and uncertainty. The start and stop of water facilities will cause fluctuations in the pressure of the water supply pipeline, and the pressure fluctuations will lead to inaccuracy of the user end tap water meter. The accurate metering of small water volume requires a more precise metering water meter. The pressure fluctuation causes the flow to drive the metering water meter, forming false metering values, leading to an increase in the cost of user water, and the abnormal water consumption after the popularization of precise metering water meters and the departmental interest-driven reports have a great social impact, causing negative impact on social fairness and credibility, which cannot be underestimated.

[0007] The normal accuracy range of tap water meter is usually ± 2%. The accuracy of tap water meter is generally required to be within ± 2%, which means that the deviation of the reading of the water meter from the actual water consumption should be within ± 2%. In addition, the accuracy of household intelligent water meter under different flow conditions also has specific provisions:

[0008] Minimum flow (Qmin): the cumulative indication error should not exceed ±5%;

[0009] Dividing flow (Qt): the cumulative indication error should not exceed ±2%;

[0010] Normal flow (Qn): the cumulative indication error should not exceed ±2%;

[0011] Maximum flow (Qmax): the cumulative indication error should not exceed ±2%.

[0012] Factors affecting the accuracy of water meters include manufacturing quality, design structure, installation conditions, use environment, and maintenance, etc. High-quality materials and precise processing technology can improve the accuracy of water meters, while the selection of installation location, water quality conditions, temperature changes, and regular calibration and cleaning maintenance will also affect its accuracy. In order to ensure the accuracy of water meter measurement, users should choose reliable water meter brands and models, and regularly check and maintain them. Generally, the measurement error of a measuring instrument is the smallest at one-half to two-thirds of the range. The higher the accuracy, the more complex the instrument manufacturing, and the more difficult the maintenance.

[0013] In addition, when the water supply pipeline is repaired, the water will be stopped in a certain area and at a certain time period, and it is necessary to store water for use in the family in time to avoid affecting normal life.

[0014] In view of the above problems, how to solve the stability of household water system, the accuracy of household water metering, the improvement of household water quality, and the inconvenience of life and fire emergency caused by the stoppage of household water system by technical means is worth further study. SUMMARY

[0015] The purpose of the present application is to solve the above problems, and provide a household water system, which adopts an automatic water replenishment valve, a buffer water tank, a water purifier, and a hot water system zero-cold-water discharge technology, effectively improves the measurement accuracy and stability of household water meters, and the quality of household water, realizes zero-cold-water discharge of household hot water system, and achieves the purposes of saving water resources, saving social public resources, improving people's life quality and life satisfaction.

[0016] A household water system, characterized in that,

[0017] The household water system is characterized in that,

[0018] The buffer water tank 43 supplies water to the water using facility through the indoor water supply pipeline 46 when the household water facility is put into use,

[0019] The automatic water replenishing valve 41 opens when the water level in the buffer water tank 43 reaches the set low water level, and closes when the water level reaches the set high water level, thereby ensuring stable and accurate metering of the water meter 40.

[0020] The automatic water replenishing valve 41 can automatically and smoothly replenish water to the buffer water tank 43 when the water level in the buffer water tank 43 is low, and closes when the water level reaches the set high water level, thereby ensuring stable and accurate metering of the water meter 40.

[0021] The water facilities include faucets, dual-purpose faucets, shower heads, washing machines, dishwashers, and water heaters.

[0022] The purifier 54 is provided.

[0023] The purifier 54 is arranged on the indoor water supply pipeline 46 between the buffer water tank 43 and the water facilities, and is used to remove impurities, bacteria, or harmful ions from the tap water.

[0024] The purifier 54 includes a filter, an ultraviolet sterilizer, an ozone sterilizer, a reverse osmosis membrane water purifier, or a water softener (including a specific ion removal device, such as a chlorine ion).

[0025] The backwater pipeline 51 and the micro water pump 52 are provided.

[0026] The water in the buffer water tank 43 is sent to the water heater 48 through the indoor water supply pipeline 46, heated by the water heater 48, and then supplied to the hot water facilities 50 through the hot water pipeline 49 for household use.

[0027] Preferably, the temperature control valve 55 is provided: when the water temperature in the backwater pipeline 51 reaches the set temperature (for example, about 35°C), the temperature control valve 55 closes, and the micro water pump 52 stops operating, and the hot water facilities 50 are opened to provide hot water for household use.

[0028] Preferably, the water inlet of the backwater pipeline 51 is arranged near the hot water facilities 50.

[0029] Preferably, when the water temperature near the hot water facility 50 reaches a set value (for example, about 35℃), the micro water pump 52 stops running, and the stop valve arranged on the return water pipeline 51 is closed.

[0030] Preferably, the hot water facility 50 is located far from the water heater 48.

[0031] The water heater 48 includes a gas water heater, an electric water heater, and a solar water heater.

[0032] Usually, the hot water facility 50 is a hot and cold water faucet for domestic life washing.

[0033] The indoor water supply pipeline 46 includes pipes, pipe fittings, and supports thereof.

[0034] The pipe fittings include elbows, tees, wyes, reducers, pipe caps, plugs, and the like.

[0035] The connections between the pipes, between the pipes and the pipe fittings, and between the pipe fittings are achieved by welding, hot melting, expansion, or screwing.

[0036] The unillustrated facilities in the domestic water supply system are matched according to or in accordance with reliable and mature technologies in the known domestic water supply pipeline.

[0037] Compared with the prior art, the present application has the following advantages:

[0038] 1. Compared with the prior art, the automatic water replenishing valve and the buffer tank arranged in the present application are conventional and mature facilities in industrial applications, but when applied to the domestic water supply system, they can achieve unexpected technical effects:

[0039] (1) Since the automatic water replenishing valve can automatically and smoothly replenish water to the buffer tank when the water level in the buffer tank is low, and the automatic water replenishing valve is closed when the water level in the buffer tank reaches a set high water level, the entire water replenishing process is continuous and smooth, thus ensuring the stable and accurate metering of the water meter.

[0040] (2) When household water use is put into operation, the water pressure and water volume of household water use will fluctuate. However, since the water supply is from a buffer tank, it will not affect the measurement of the tap water meter. This eliminates the impact of water pressure and water volume changes on the measurement accuracy of the tap water meter when the traditional household water facilities are put into operation, and also eliminates the impact of the traditional household water facilities on the water supply system. However, the inaccuracy of tap water meter measurement at the user end caused by fluctuations in household water pressure and water volume, the increase in user water costs, abnormal water volume after the promotion of precision metering water meters, and reports driven by departmental interests are frequently seen in the media, causing a great social reaction and negatively impacting social fairness and credibility. The harm should not be underestimated. The technical solution of this invention eliminates this drawback invisibly.

[0041] (3) Since the tap water meter can measure smoothly, stably and accurately, there is no need to consider the influence of slight changes in water volume and pressure. There is no need to replace the tap water meter with a high-precision one as many places do now. The replaced tap water meter cannot be effectively used, which objectively leads to idle resources and great waste.

[0042] (4) Due to the water storage function of the buffer tank, when the water supply department carries out maintenance on the water supply pipeline and water is shut off in a certain area or at a certain time, the water stored in the buffer tank can provide for the needs of daily life and will not affect the normal life of the family.

[0043] (5) The water storage capacity of the buffer tank can effectively provide emergency rescue materials in special circumstances such as a fire caused by water outage;

[0044] 2. Compared with the existing technology, the zero cold water discharge technology solution for the household hot water system of the present invention can be applied to both newly built household water supply systems and the renovation of traditional household water systems. The technology has strong versatility and low renovation cost.

[0045] 3. Compared with existing safety technical specifications for the construction of domestic water supply systems, the technical solution of this invention, if it becomes a universal technical specification for the industry, will undoubtedly have enormous social and economic significance. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of a household water system according to the present invention.

[0047] Figure 1 In the middle: 40-Water meter, 41-Automatic water supply valve, 42-Inlet pipe, 43-Buffer tank, 44-Control valve, 45-Pipe before purifier, 46-Indoor water supply pipe, 47-First water facility, 48-Water heater, 49-Hot water pipe, 50-Hot water facility, 51-Return pipe, 52-Mini water pump, 53-Second water facility, 54-Purifier, 55-Thermostatic valve. DETAILED DESCRIPTION

[0048] The application will be further described in detail below in conjunction with the accompanying drawings. Figure 1 and specific examples.

[0049] Example 1:

[0050] A domestic water system, the water meter 40 of which is provided with an automatic water replenishing valve 41 and a buffer tank 43. Water enters the buffer tank 43 through the water meter 40, the automatic water replenishing valve 41 and the water inlet pipe 42. The upper part of the buffer tank 43 is provided with a regulating valve 44, which is used to regulate the water level and the air space pressure in the buffer tank 43 to a suitable range,

[0051] When the domestic water system is put into use, the buffer tank 43 supplies water to the first water using facility 47 and the second water using facility 53 through the indoor water supply pipe 46.

[0052] When the water level in the buffer tank 43 is at the set low water level, the automatic water replenishing valve 41 is opened to replenish water. When the water level reaches the set high water level, the automatic water replenishing valve 41 is closed to stop replenishing water.

[0053] Since the automatic water replenishing valve 41 can automatically and smoothly replenish water into the buffer tank 43 when the water level in the buffer tank 43 is low, and the automatic water replenishing valve 41 is closed when the water level reaches the set high water level, the whole replenishing process is continuous and smooth, thus ensuring the stable and accurate metering of the water meter 40. When the domestic water system is put into use, the water pressure and the water volume will fluctuate, but since the water is supplied by the buffer tank 43, the metering of the water meter 40 will not be affected, thus eliminating the influence of the fluctuation of the water pressure and the water volume on the metering accuracy of the water meter 40 and the influence of the water supply system when the traditional domestic water system is put into use.

[0054] The water using facilities include faucets, dual-purpose faucets, shower heads, washing machines, dishwashers, water heaters, etc.

[0055] A purifier 54 is provided.

[0056] The purifier 54 is arranged on the indoor water supply pipe 46 between the buffer tank 43 and the water using facilities, and is used to remove impurities, bacteria or harmful ions from the tap water.

[0057] The purifier 54 includes a filter, an ultraviolet sterilizer, an ozone sterilizer, a reverse osmosis membrane water purifier or a water softener (including a specific ion removal device, such as chlorine ion, etc.).

[0058] A backwater pipe 51 and a micro water pump 52 are provided.

[0059] The water in the buffer tank 43 is sent to the water heater 48 through the indoor water supply pipeline 46, and the hot water produced by the water heater 48 is supplied to the hot water facility 50 for household use. When the hot water facility 50 is not in use, the water in the hot water pipeline 49 will cool down to form cold water. Before the hot water facility is put into use, the cold water in the hot water pipeline 49 is sent to the indoor water supply pipeline 46 through the backwater pipeline 51 and the micro water pump 52, so as to realize zero cold water discharge in the hot water use process of the household water supply system.

[0060] Preferably, a temperature control valve 55 is provided. When the temperature of the water in the backwater pipeline reaches a set temperature (for example, about 35℃), the temperature control valve 55 is closed and the micro water pump 52 is stopped, and the hot water facility 50 is opened to provide hot water for household use.

[0061] Preferably, the water inlet of the backwater pipeline 51 is arranged near the hot water facility 50.

[0062] Preferably, when the temperature of the water near the hot water facility 50 reaches a set value (for example, about 35℃), the micro water pump is automatically stopped, and the stop valve arranged on the backwater pipeline 51 is automatically closed.

[0063] Preferably, the hot water facility 50 is located far away from the water heater 48.

[0064] The water heater 48 includes a gas water heater, an electric water heater, and a solar water heater.

[0065] The hot water facility 50 is a cold and hot water faucet for washing and bathing in household life.

[0066] The indoor water supply pipeline 46 includes pipes, pipe fittings, and their supports.

[0067] The pipe fittings include elbows, tees, crosses, reducers, pipe caps, plugs, etc.

[0068] The connection between the pipes, the connection between the pipes and the pipe fittings, and the connection between the pipe fittings are achieved by welding, hot melting connection, expansion joint, or threaded connection.

[0069] The unexplained facilities in the household water supply system are matched according to the reliable and mature technology in the known household water supply pipeline.

[0070] Although the present application has been disclosed with reference to the preferred embodiments, they are not intended to limit the present application, and any person skilled in the art can make various changes or modifications without departing from the spirit and scope of the present application, which also belongs to the protection scope of the present application. Therefore, the protection scope of the present application should be defined by the claims of the present application.

Claims

1. A domestic water system characterized in that, the water meter (40) of the domestic water system is provided with an automatic water supplement valve (41) and a buffer tank (43), the buffer tank (43) supplies water to the water facilities through the indoor water supply pipeline (46) when the domestic water facilities are put into use, when the water level in the buffer tank (43) reaches the set low water level, the automatic water supplement valve (41) opens to supply water, and when the water level reaches the set high water level, the automatic water supplement valve (41) closes to stop water supply.

2. The domestic water system according to claim 1, characterized in that, the connection between pipes, between pipes and fittings, and between fittings in the indoor water supply pipeline (46) is achieved by welding, hot melt connection, expansion joint or threaded connection.

3. The domestic water system according to claim 1, characterized in that, a purifier (54) is provided: the purifier (54) is arranged on the indoor water supply pipeline (46) between the buffer tank (43) and the water facilities.

4. The domestic water system according to claim 3, characterized in that, the purifier (54) includes a filter, an ultraviolet sterilizer, an ozone sterilizer, a reverse osmosis membrane water purifier or a water softener.

5. The domestic water system according to claim 1 or 3, characterized in that, a return pipeline (51) and a micro water pump (52) are provided: the water in the buffer tank (43) is sent to the water heater (48) through the indoor water supply pipeline (46), and after being heated by the water heater (48), the hot water is supplied to the hot water facilities (50) through the hot water pipeline (49) for domestic use; when the hot water facilities (50) are not in use, the water in the hot water pipeline (49) will cool down to form cold water, and before the hot water facilities are put into use, the cold water in the hot water pipeline (49) enters the indoor water supply pipeline (46) through the return pipeline (51) and the micro water pump (52), thereby realizing zero cold water discharge during the use of hot water in the domestic water system.

6. The domestic water system according to claim 5, characterized in that, the water heater (48) includes a gas water heater, an electric water heater and a solar water heater.

7. The domestic water system according to claim 1, characterized in that, the water facilities include faucets, dual-purpose faucets, shower heads, washing machines, dishwashers and hot water heaters.

8. The domestic water system according to claim 5, characterized in that, a temperature control valve (55) is provided: when the water temperature in the return pipeline (51) reaches the set temperature, the temperature control valve (55) is closed and the micro water pump (52) is stopped, and the hot water facilities (50) are opened to provide hot water for domestic use.

9. The domestic water system according to claim 5, characterized in that, when the water temperature near the hot water facilities (50) in the hot water pipeline (49) reaches the set value, the micro water pump (52) is stopped and the stop valve arranged on the return pipeline (51) is closed.

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