Zero cold water and hot water supply system with hot water pipeline length learning function

Abstract

The utility model discloses a zero cold water and hot water supply system with a hot water pipeline length learning function. The zero cold water and hot water supply system comprises a hot water pipeline, a cold water pipeline, a water heater, a circulating water pump, a flowmeter, a temperature sensor, a controller, a one-way valve and a plurality of water using terminals. The controller can control the circulating water pump to operate the circulating water flow when receiving the zero cold water operation signal, and the circulating water flow is the circulating water flow when the controller receives the learning signal and independently opens the hot water drainage function of the water using terminal farthest from the water heater. The difference value between a first water flow recorded when the water temperature detected at the water outlet of the water heater reaches a first preset water temperature and a second water flow recorded when the water temperature detected at the water outlet of the water terminal farthest from the water heater reaches a second preset water temperature is closed; single-point zero cold water and hot water supply can be achieved after learning, large-scale transformation of an original pipeline is not needed, the structure is simpler, the cost is lower, and a user does not need to wait blindly at a water using terminal.

Description

Technical Field

[0001] The utility model relates to the field of zero cold water and hot water supply systems, in particular to a zero cold water and hot water supply system with a hot water pipeline length learning function. Background Art

[0002] At present, most households in China use zero-cold-water water heater supply systems in the following two ways:

[0003] 1. Upgrade and reconstruct the original cold and hot pipes, connect a booster circulation water pump in series in the water inlet and outlet pipes inside or outside the water heater, and connect a one-way valve between the end of the hot water pipe at the water outlet of the water heater and the tap water pipe, which can flow from the hot water pipe to the tap water pipe; when the hot water valves in the hot water pipe are all closed, turn on the power of the booster circulation water pump, the water pressure at the outlet of the water pump is greater than the water inlet, so that the pressure of the one-way valve at the end of the hot water pipe is greater than the pressure of the tap water pipe, the one-way valve automatically opens, the cold water in the hot water pipe flows into the tap water pipe, and the hot water in the water heater automatically flows to the water terminal;

[0004] 2. By setting an independent, powered water return device at the water terminal, the water return device is linked with the water heater, and the cold water in the hot water pipe can also be circulated into the cold water pipe, so that the hot water in the water heater automatically flows to the water terminal;

[0005] Although the above methods can realize hot water supply with zero cold water, they are all single-point operations, that is, after the system responds to the zero cold water command of the water use terminal, it needs to rely on the thermocouple at the water use terminal to detect the water temperature each time, thereby generating a zero cold water stop command. After receiving the stop command, the circulating water pump stops working to complete the zero cold water process; at the same time, large-scale transformation of the original pipeline is required, and the cost of the zero cold water system is relatively high, which not only increases the purchase cost, but also brings a large transformation cost; and, since the hot water pipelines of each household are different, the hot water time of the hot water pipelines is also different; therefore, there is an urgent need for a zero cold water hot water supply system with a hot water pipeline length learning function to solve the above problems. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a zero cold water hot water supply system with a hot water pipeline length learning function.

[0007] The technical solution adopted by an embodiment of the utility model to solve the technical problem is: a zero cold water hot water supply system with a hot water pipeline length learning function, including a hot water pipeline, a cold water pipeline, a water heater, a circulating water pump, a flow meter, a temperature sensor, a controller, a one-way valve and a plurality of water terminals;

[0008] The hot water pipeline is connected to the water outlet of the water heater and the water use terminal respectively;

[0009] The cold water pipeline is connected to the water inlet of the water heater and the water use terminal respectively;

[0010] The circulating water pump and flow meter are connected in series to the hot water pipeline or the cold water pipeline;

[0011] The temperature sensor is connected in series to the water outlet of the water heater;

[0012] The controller is electrically connected to the circulating water pump, the temperature sensor and the flow meter;

[0013] The one-way valve is connected in series between the end of the hot water pipeline and the cold water pipeline;

[0014] The controller can control the circulating water pump to operate the circulating water flow rate when receiving a zero cold water operation signal, wherein the circulating water flow rate is the difference between the first water flow rate recorded when the controller receives a learning signal and separately turns on the hot water discharge function of the water terminal farthest from the water heater, when the water temperature is detected at the water outlet of the water heater to reach the first preset water temperature, and the second water flow rate recorded when the water terminal is closed when the water temperature is detected at the water outlet of the water terminal farthest from the water heater to reach the second preset water temperature.

[0015] As one of the preferred embodiments of the present utility model, the zero cold water operation signal is generated by a first button on the controller.

[0016] As one of the preferred embodiments of the present utility model, the zero cold water operation signal is generated by opening the hot water discharge function of the water use terminal.

[0017] As one of the preferred embodiments of the present utility model, the learning signal is generated by a second button on the controller.

[0018] As one of the preferred embodiments of the utility model, a circulating water pump, a flow meter, a temperature sensor and a controller are integrated in the water heater.

[0019] The beneficial effects of the utility model include: a zero cold water hot water supply system with a hot water pipeline length learning function, comprising a hot water pipeline, a cold water pipeline, a water heater, a circulating water pump, a flow meter, a temperature sensor, a controller, a one-way valve and a plurality of water use terminals; the controller can control the circulating water pump to operate the circulating water flow when receiving a zero cold water operation signal, wherein the circulating water flow is the difference between a first water flow recorded when the controller detects that the water temperature reaches a first preset water temperature at the water outlet of the water heater when receiving a learning signal and separately opens the hot water discharge function of the water use terminal farthest from the water heater, and a second water flow recorded when the water temperature reaches a second preset water temperature at the water outlet of the water use terminal farthest from the water heater; through the above structure, single-point zero cold water hot water supply can be realized after learning, and there is no need to carry out large-scale transformation of the original pipeline, which is not only simpler in structure and lower in cost, but also does not require users to wait blindly at the water use terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a principle block diagram of a zero cold water hot water supply system with hot water pipe length learning function;

[0022] Figure 2 It is a principle block diagram of a zero cold water hot water supply system with a hot water pipe length learning function in a learning state;

[0023] Figure 3 The invention is a principle block diagram of a zero cold water hot water supply system with a hot water pipeline length learning function in a zero cold water operation state. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0028] Reference Figures 1 to 3 , a zero cold water hot water supply system with a hot water pipeline length learning function, comprising a hot water pipeline 10, a cold water pipeline 20, a water heater 30, a circulating water pump 40, a flow meter 50, a temperature sensor 60, a controller 70, a one-way valve 90 and a plurality of water terminals 80;

[0029] The hot water pipeline 10 is connected to the water outlet of the water heater 30 and the water terminal 80 respectively;

[0030] The cold water pipeline 20 is connected to the water inlet of the water heater 30 and the water terminal 80 respectively;

[0031] The circulating water pump 40 and the flow meter 50 are connected in series to the hot water pipeline 10 or the cold water pipeline 20;

[0032] The temperature sensor 60 is connected in series to the water outlet of the water heater 30;

[0033] The controller 70 is electrically connected to the circulating water pump 40, the temperature sensor 60 and the flow meter 50;

[0034] The one-way valve 90 is connected in series between the end of the hot water pipe 10 and the cold water pipe 20;

[0035] The controller 70 can control the circulating water pump 40 to operate the circulating water flow rate when receiving a zero cold water operation signal, wherein the circulating water flow rate is the difference between the first water flow rate recorded when the water temperature at the water outlet of the water heater 30 reaches the first preset water temperature when the controller 70 receives a learning signal and separately turns on the hot water discharge function of the water terminal 80 farthest from the water heater 30, and the second water flow rate recorded when the water terminal 80 is closed when the water temperature at the water outlet of the water terminal 80 farthest from the water heater 30 reaches the second preset water temperature.

[0036] In the utility model, the working principle is as follows:

[0037] ①Reference Figure 1-2 After the user connects the pipeline, he presses the second button 72 (learning button) on the controller 70, and the controller 70 enters the learning mode. At this time, the user walks to the water terminal 80 farthest from the water heater 30 and turns on its hot water discharge function. The temperature sensor 60 at the outlet of the water heater 30 detects the outlet water temperature in real time and the flow meter 50 detects the flow data in the pipeline in real time. When the temperature sensor 60 detects that the water temperature at the outlet of the water heater 30 reaches the first preset value, the controller 70 records the first water flow fed back by the flow meter 50. At the same time, the user detects the water temperature of the water terminal 80 by body feeling at the water terminal 80, and turns off the hot water discharge function of the water terminal 80 when the body feeling reaches a suitable temperature. At this time, the controller 70 records the second water flow fed back by the flow meter 50, and the controller 70 calculates and saves the circulating water flow, wherein the circulating water flow = the second water flow - the first water flow, and the learning process is completed; wherein, the cold water in the hot water pipeline 10 enters the cold water pipeline 20 through the one-way valve 90 at the end of the hot water pipeline 10 and circulates.

[0038] ②Reference Figure 1 and 3 When the user needs to use the zero cold water function, the controller 70 receives the water pulse zero cold water operation signal, controls the circulating water pump 40 to start, and the temperature sensor 60 at the outlet of the water heater 30 detects the outlet water temperature in real time and the flow meter 50 detects the flow data in the pipeline in real time. When the water temperature at the outlet of the water heater 30 reaches the first preset value, the controller 70 records the third water flow fed back by the flow meter 50, and controls the circulating water pump 40 to continue running until the flow meter 50 detects that the zero cold water flow (wherein, the zero cold water flow = the third water flow + the circulating water flow) is reached. At this time, the hot water is just delivered to the water terminal 80; it should be noted that since the learning is based on the water terminal 80 farthest from the water heater 30, when the zero cold water is running, the hot water runs through the entire hot water pipeline 10.

[0039] ③ As the first embodiment of generating a zero cold water operation signal, the zero cold water operation signal is generated by the first button 71 on the controller 70; as the first embodiment of generating a zero cold water operation signal, the zero cold water operation signal is generated by turning on the hot water discharge water pulse function of any water terminal 80; and the learning signal is generated by the second button 72 on the controller 70;

[0040] ④ The advantages of the utility model are: through the above-mentioned structure, single-point zero cold water hot water supply can be realized after learning, and there is no need to carry out large-scale transformation of the original pipeline. Not only is the structure simpler and the cost lower, but also the user does not need to wait blindly at the water terminal, and there will be no problem of hot water entering the cold water pipeline 20.

[0041] Preferably, the circulating water pump 40 , the flow meter 50 , the temperature sensor 60 and the controller 70 are integrated into the water heater 30 .

[0042] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A zero cold water hot water supply system with hot water pipeline length learning function, characterized in that: It comprises a hot water pipeline (10), a cold water pipeline (20), a water heater (30), a circulating water pump (40), a flow meter (50), a temperature sensor (60), a controller (70), a one-way valve (90) and a plurality of water use terminals (80); The hot water pipeline (10) is respectively connected to the water outlet of the water heater (30) and the water terminal (80); The cold water pipeline (20) is respectively connected to the water inlet of the water heater (30) and the water terminal (80); The circulating water pump (40) and the flow meter (50) are connected in series to the hot water pipeline (10) or the cold water pipeline (20); The temperature sensor (60) is connected in series to the water outlet of the water heater (30); The controller (70) is electrically connected to the circulating water pump (40), the temperature sensor (60) and the flow meter (50); The one-way valve (90) is connected in series between the end of the hot water pipeline (10) and the cold water pipeline (20); The controller (70) can control the circulating water pump (40) to operate the circulating water flow rate when receiving a zero cold water operation signal, wherein the circulating water flow rate is the difference between the first water flow rate recorded when the controller (70) receives a learning signal and individually turns on the hot water discharge function of the water terminal (80) farthest from the water heater (30) and detects that the water temperature at the water outlet of the water heater (30) reaches a first preset water temperature, and the second water flow rate recorded when the water terminal (80) farthest from the water heater (30) is closed when the water temperature detected at the water outlet of the water terminal (80) reaches a second preset water temperature.

2. A zero cold water hot water supply system with hot water pipeline length learning function according to claim 1, characterized in that: The zero cold water operation signal is generated by a first button (71) on the controller (70).

3. A zero cold water hot water supply system with hot water pipeline length learning function according to claim 1, characterized in that: The zero cold water operation signal is generated by the hot water discharge function of the water use terminal (80).

4. A zero cold water hot water supply system with hot water pipeline length learning function according to claim 1, characterized in that: The learning signal is generated by a second button (72) on the controller (70).

5. A zero cold water hot water supply system with hot water pipeline length learning function according to claim 1, characterized in that: The circulating water pump (40), the flow meter (50), the temperature sensor (60) and the controller (70) are integrated in the water heater (30).

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