Zero cold water and hot water supply system for multi-point segmented operation

Abstract

The utility model discloses a zero cold water and hot water supply system with multi-point segmented operation. 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 flow meter, a temperature sensor, a controller, a one-way valve, a plurality of water terminals and a plurality of signal generators, by means of the structure, multi-point and sectional type zero cold water and hot water supply can be achieved after learning of all the signal generators, large-scale transformation of an original pipeline is not needed, the structure is simpler, cost is lower, point-to-point supply of hot water is achieved, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of zero cold water and hot water supply systems, in particular to a multi-point segmented operation zero cold water and hot water supply system. 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 outlet 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, the original pipeline needs to be renovated on a large scale, and the cost of the zero cold water system is relatively high, which not only increases the purchase cost, but also brings a large renovation cost.

[0006] Therefore, there is an urgent need for a multi-point segmented zero cold water hot water supply system to solve the above problems. Utility Model Content

[0007] 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 multi-point segmented operation zero cold water and hot water supply system.

[0008] The technical solution adopted by an embodiment of the utility model to solve its technical problem is: a multi-point segmented zero cold water hot water supply system, 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, a plurality of water terminals and a plurality of signal generators with unique IDs;

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

[0010] The cold water pipeline is connected to the water inlet of the water heater and the water use terminal respectively;

[0011] The circulating water pump and flow meter are connected in series to the hot water pipeline or the cold water pipeline;

[0012] The temperature sensor is connected in series to the water outlet of the water heater;

[0013] The controller is electrically connected to the circulating water pump, the temperature sensor and the flow meter;

[0014] The signal generator is communicatively connected with the controller;

[0015] The one-way valve is connected in series between the end of the hot water pipeline and the cold water pipeline;

[0016] After the signal generator is matched and learned with the controller, it can be used in conjunction with the water terminal. When the controller receives the zero cold water operation instruction sent by the signal generator, it controls the circulating water pump to transport hot water to the vicinity of the water terminal used in conjunction with the signal generator.

[0017] As one of the preferred embodiments of the present utility model, the signal generator and the controller are connected via a wired communication module.

[0018] As one of the preferred embodiments of the present utility model, the signal generator and the controller are connected via a wireless communication module.

[0019] As one of the preferred embodiments of the present utility model, the wireless communication module is configured as a communication module with Internet attributes.

[0020] As one of the preferred embodiments of the utility model, the signal generator is configured as a remote controller.

[0021] As one of the preferred embodiments of the present utility model, the signal generator is configured as an intelligent speaker.

[0022] The beneficial effects of the utility model are as follows: a multi-point segmented zero cold water hot water supply system, 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 check valve, several water terminals and several signal generators; the signal generator can be matched with and learned by the controller, and then used in conjunction with the signal generator using a water terminal, and when the controller receives a zero cold water operation instruction sent by the signal generator, the controller controls the circulating water pump to transport hot water to the vicinity of the water terminal used in conjunction with the signal generator; through the above structure, multi-point, segmented zero cold water hot water supply can be realized after learning of each signal generator, and there is no need to carry out large-scale transformation of the original pipeline, which not only has a simpler structure and lower cost, but also realizes point-to-point supply of hot water and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 It is a principle block diagram of a first embodiment of a zero cold water and hot water supply system;

[0025] Figure 2 It is a principle block diagram of a second embodiment of a zero cold water and hot water supply system;

[0026] Figure 3 A principle block diagram of a second embodiment of a zero cold water and hot water supply system in which a third signal generator is "learning";

[0027] Figure 4 A principle block diagram of a second signal generator in a second embodiment of a zero cold water and hot water supply system being "learning";

[0028] Figure 5 It is a principle block diagram of a second embodiment of a zero cold water hot water supply system in which the third signal generator is "running in a zero cold water process";

[0029] Figure 6 A principle block diagram of a second signal generator in a second embodiment of a zero cold water hot water supply system in which the second signal generator is "running a zero cold water process";

[0030] Figure 7 A block diagram showing a fourth signal generator in the third embodiment of a zero cold water and hot water supply system being "learning";

[0031] Figure 8 A block diagram showing a first signal generator in the third embodiment of a zero cold water and hot water supply system being "learning";

[0032] Fig. 9A principle block diagram of a third embodiment of a zero cold water hot water supply system in which a fourth signal generator is "running a zero cold water process";

[0033] Fig.10 A principle block diagram of a third embodiment of a zero cold water hot water supply system in which a first signal generator is "running a zero cold water process";

[0034] Fig.11 It is a flow chart of a control method of a multi-point segmented zero cold water and hot water supply system;

[0035] Fig.12 Flowchart for matching the controller with a signal generator having unique ID information. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Reference Figures 1 to 12, a multi-point segmented zero cold water hot water supply system, including 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 91, a plurality of water terminals 80 and a plurality of signal generators 90 with unique IDs;

[0041] The hot water pipeline 10 is connected to the water outlet of the water heater 30 and the water terminal 80 respectively;

[0042] The cold water pipeline 20 is connected to the water inlet of the water heater 30 and the water terminal 80 respectively;

[0043] 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;

[0044] The temperature sensor 60 is connected in series to the water outlet of the water heater 30;

[0045] The controller 70 is electrically connected to the circulating water pump 40, the temperature sensor 60 and the flow meter 50;

[0046] The signal generator 90 is in communication connection with the controller 70;

[0047] The one-way valve 91 is connected in series between the end of the hot water pipe 10 and the cold water pipe 20;

[0048] After matching and learning with the controller 70, the signal generator 90 can be used in conjunction with the water terminal 80. When the controller 70 receives the zero cold water operation instruction sent by the signal generator 90, the controller 70 controls the circulating water pump 40 to transport hot water to the vicinity of the water terminal 80 used in conjunction with the signal generator 90.

[0049] In the present invention, the control method of the multi-point segmented zero cold water and hot water supply system is as follows:

[0050] S1, the controller 70 determines whether the signal generator 90 has been matched, if not, it goes to step S2, otherwise it goes to step S3;

[0051] S2, the controller 70 matches the signal generator 90 with unique ID information, so that the signal generator 90 is used in conjunction with a water terminal 80;

[0052] S3, the controller 70 determines whether the signal generator 90 has been learned, if not, it goes to step S4, otherwise it goes to step S5;

[0053] S4, after the controller 70 receives the learning instruction signal sent by the signal generator 90, the hot water discharge function of the water terminal 80 is turned on. When the temperature sensor 60 at the water outlet of the water heater 30 detects that the water temperature reaches the first preset water temperature, the flow meter 50 starts to record the first water flow rate and records the second water flow rate when the water outlet of the water terminal 80 detects whether the water temperature reaches the second preset water temperature. The learning is completed and the circulating water flow rate required for each operation of the zero cold water process by the water terminal 80 is saved in the controller 70, wherein the circulating water flow rate = the second water flow rate - the first water flow rate;

[0054] S5, the controller 70 starts the circulating water pump 40 when receiving the zero cold water circulation start signal sent by the signal generator 90, records the third water flow rate when the temperature sensor 60 at the water outlet of the water heater 30 detects that the water temperature reaches the first preset water temperature, and controls the circulating water pump 40 to stop when the zero cold water flow rate is detected, wherein the zero cold water flow rate = the third water flow rate + the circulating water flow rate;

[0055] S6, ending this zero cold water circulation process.

[0056] 1. In this utility model, reference is made to Figure 1 , 2 , 7, provides 3 embodiments, specifically, refer to Figure 1 In this embodiment, the circulating water pump 40, the flow meter 50 and the temperature sensor 60 are integrated in a "circulator", which can be connected in series to the user's original hot water pipeline 10, which can further reduce the modification of the pipeline, and; refer to Figure 2 In this embodiment, the circulating water pump 40, the flow meter 50 and the temperature sensor 60 are of a split structure, wherein the circulating water pump 40 is connected in series to the cold water pipeline 20 and the water outlet of the circulating water pump 40 is connected to the water inlet of the water heater 30, the flow meter 50 is connected in series between the water outlet of the circulating water pump 40 and the water inlet of the water heater 30, and the temperature sensor 60 is connected in series to the water outlet of the water heater 30; it should be noted that in Figure 1 and Figure 2 In the embodiments, the return water operation is performed by means of the cold water pipeline 20; Figure 7 , in this embodiment, with Figure 2 Compared with the embodiment of the present invention, the difference lies in that an independent return pipe 91 is added.

[0057] 2. Reference Figure 1-10 The hot water supply system is provided with four water terminals 80 and four signal generators 90 (numbered 1, 2, 3, and 4, respectively) according to the length of the pipeline between the water heater 30 from near to far. The utility model takes the third water terminal 80 and the third signal generator 90 learning zero cold water cycle as an example for explanation; refer to Figure 3, the third water terminal 80 and the third signal generator 90 are in the process of learning, and the specific learning process is as follows: after the third signal generator 90 and the controller 70 are matched, the third signal generator 90 and the controller 70 both save each other's unique ID information, and when the third signal generator 90 sends a learning signal, the controller 70 enters the learning mode after receiving it and sends a start command to the circulating water pump 40. At the same time, the third signal generator 90 sends a prompt sound to prompt the user to turn on the water terminal 80. The controller 70 receives the outlet water temperature of the water heater 30 fed back by the temperature sensor 60 in real time. When it reaches the preset value (for example, 36°C), the controller 70 records the first water flow fed back by the flow meter 50. The user continuously feeds back the appropriate temperature (the second preset water temperature) at the water terminal 80. When the temperature fed back from the water terminal 80 is appropriate When the controller 70 receives the second water flow rate fed back by the flow meter 50, the controller 70 calculates and saves the circulating water flow rate (third circulating water flow rate) required by the water terminal 80 each time the zero cold water process is run. The circulating water flow rate = the second water flow rate - the first water flow rate. At the same time, the circulating water flow rate, the water terminal 80 and the signal generator 90 are used together, that is, the circulating water flow rate corresponds to the third water terminal 80 and the third signal generator 90. At this time, the hot water in the hot water pipeline 10 is transported to the vicinity of the third water terminal 80; wherein, the cold water in the hot water pipeline 10 enters the cold water pipeline 20 through the one-way valve 91 at the end of the hot water pipeline 10 and circulates. It should be noted that when an independent return pipe is used, the one-way valve 91 is connected in series between the end of the return pipe and the water inlet of the water heater 30;

[0058] The first circulating water flow and the first water terminal 80 and the first signal generator 90, the second circulating water flow and the second water terminal 80 and the second signal generator 90, and the fourth circulating water flow and the fourth water terminal 80 and the fourth signal generator 90 are used together through the above learning process; it should be noted that the way to feedback the appropriate temperature at the water terminal 80 includes but is not limited to the following:

[0059] ① In step S4, the second preset water temperature is obtained by the user through body sensing at the water outlet of the water terminal 80. The user generates a learning end instruction by turning off the hot water function of the water terminal 80. The controller 70 records the second water flow rate when it detects that the water flow rate is lower than the end setting value;

[0060] ② In step S4, the second preset water temperature is detected by the user at the water outlet of the water terminal 80 through body sensing. When the detected water temperature reaches the appropriate water temperature, the signal generator 90 sends a learning end instruction to the controller 70 and then records the second water flow rate;

[0061] ③ In step S4, the second preset water temperature is detected by the user using a temperature detector at the water outlet of the water terminal 80, and when the second preset water temperature is reached, the user generates a learning end instruction by turning off the hot water function of the water terminal 80, and the controller 70 records the second water flow rate when detecting that the water flow rate is lower than the end setting value;

[0062] ④ In step S4, the second preset water temperature is detected by the user using a temperature detector at the water outlet of the water use terminal 80, and when the second preset water temperature is reached, a learning end instruction is sent to the controller 70 through the signal generator 90 and the second water flow rate is recorded; wherein, in ④, it can be subdivided into 3 situations, the first one: the temperature detector and the signal generator 90 are split and the data are not linked, the user uses the temperature detector to detect the hot water temperature at the water outlet of the water use terminal 80, and when the second preset water temperature is reached, the instruction to end learning is sent through the button on the signal generator 90; the second one: the temperature detector and the signal generator 90 are split and the data are linked, the user uses the temperature detector to detect the hot water temperature at the water outlet of the water use terminal 80, and when the second preset water temperature is reached, the signal generator 90 automatically sends an instruction to end learning; the third one: the temperature detector and the signal generator 90 are integrated and the data are linked, the user uses the temperature detector to detect the hot water temperature at the water outlet of the water use terminal 80, and when the second preset water temperature is reached, the signal generator 90 automatically sends an instruction to end learning.

[0063] 3. Reference Figure 5 , the third water terminal 80 and the third signal generator 90 are running the zero cold water circulation process. Specifically, when the third signal generator 90 issues a zero cold water circulation instruction, the controller 70 controls the circulating water pump 40 to start after receiving the zero cold water circulation instruction. The circulating water pump 40 works according to the third circulating water flow rate corresponding to the third water terminal 80 and the third signal generator 90. At this time, the water temperature at the outlet of the water heater 30 gradually rises until it reaches the first preset water temperature and records the third water flow rate. The water flow rate continues to be detected until it is detected that the water flow rate reaches the zero cold water flow rate, and the circulating water pump 40 is controlled to stop (zero cold water flow rate = third water flow rate + third circulating water flow rate). At this time, the hot water in the hot water pipeline 10 is just transported to the vicinity of the third water terminal 80, and the system automatically stops operating;

[0064] The zero cold water circulation process of the first water terminal 80 and the first signal generator 90, the zero cold water circulation process of the second water terminal 80 and the second signal generator 90, and the zero cold water circulation process of the fourth water terminal 80 and the fourth signal generator 90 are consistent with the above-mentioned zero cold water circulation process, and are not described in detail here;

[0065] 4. It should be noted that there are several situations in the zero cold water and hot water supply system:

[0066] Similarly, the third water terminal 80 and the third signal generator 90 are running the zero cold water circulation process as an example for explanation;

[0067] ① When the third water terminal 80 and the third signal generator 90 are running the zero cold water circulation process, the first water terminal 80 and the first signal generator 90 also start to run the zero cold water circulation process. Since the pipe length between the first water terminal 80 and the first signal generator 90 and the water heater 30 is shorter than the pipe length between the third water terminal 80 and the third signal generator 90 and the water heater 30, the third zero cold water flow rate is smaller than the first zero cold water flow rate. The first signal generator 90 directly issues a prompt indicating the end of the operation, and the user can use hot water at the first water terminal 80;

[0068] ② While the third water use terminal 80 and the third signal generator 90 are running the zero cold water circulation process, the fourth water use terminal 80 and the fourth signal generator 90 also start to run the zero cold water circulation process. Since the pipe length between the fourth water use terminal 80 and the fourth signal generator 90 and the water heater 30 is greater than the pipe length between the third water use terminal 80 and the third signal generator 90 and the water heater 30, the fourth zero cold water flow rate is greater than the first zero cold water flow rate. The circulating water pump 40 will continue to operate when the third zero cold water flow rate is reached until it is detected that the water flow rate reaches the fourth zero cold water flow rate. At this time, the fourth signal generator 90 will issue a prompt that the operation is ended, and the user can use hot water at the fourth water use terminal 80.

[0069] 5. It should be noted that the signal generator 90 can be an independent remote control, smart speaker, or any other device that has unique ID information and can communicate wirelessly with the controller 70, and the location of the signal generator 90 is not limited. In the present utility model, the coordinated use of the circulating water flow, the water terminal 80, and the signal generator 90 depends on the unique ID information; for example, in a bedroom with a bathroom, the signal generator 90 can be a remote control arranged around the bathroom faucet (water terminal 80), or it can be a smart speaker arranged in the room, or even a smart speaker arranged in other rooms.

[0070] 6. The advantages of the utility model are: it can realize multi-point, segmented zero cold water and hot water supply after each signal generator is learned, 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 it also realizes point-to-point supply of hot water and reduces energy consumption.

[0071] As a preferred embodiment of the code matching between the signal generator 90 and the controller 70, in step S2, the following steps are included:

[0072] S2.1. Press the pairing key on the signal generator 90 to enter the pairing mode, and send a pairing signal with the unique ID information of the signal generator 90 to the controller 70;

[0073] S2.2, the controller 70 performs the code matching after receiving the code matching signal. If the code matching is successful within the set time, the process proceeds to step S2.3;

[0074] S2.3, the signal generator 90 and the controller 70 respectively save each other's unique ID information and exit the pairing mode;

[0075] S2.4. Exit the binding mode and wait for the next binding.

[0076] Further, in step S5, after the circulating water pump 40 is started, it is detected whether the water flow is detected within the continuous set time. If the water flow is not detected, it is determined as a backflow failure and enters step S6, otherwise the water temperature at the outlet of the water heater 30 is detected.

[0077] Further, in step S5, after detecting that the water temperature at the water outlet of the water heater 30 reaches the first preset water temperature, detect whether the water temperature at the water outlet of the water heater 30 is lower than the first preset water temperature within a continuous set time. If so, it is determined that the water outlet temperature of the water heater 30 is abnormal and enters step S6. Otherwise, when it is detected that the cold water flow reaches zero, the circulating water pump 40 is controlled to stop.

[0078] Furthermore, the following steps are included between step S5 and step S6:

[0079] S5.1. When it is detected that the water flow rate reaches the zero cold water flow rate of this zero cold water circulation process, check whether there are other zero cold water circulation processes running. If so, proceed to step S5.2, otherwise proceed to step S5.3;

[0080] S5.2, compare the zero cold water flow rate of this zero cold water circulation process with the zero cold water flow rate of other zero cold water circulation processes S5.3, if it is less than, go to step S5.3, if it is greater, go to step S5.4;

[0081] S5.3, check whether the water flow rate reaches the zero cold water flow rate of other zero cold water circulation processes, if so, proceed to step S5.4, otherwise repeat step S5.3;

[0082] S5.4, control the circulating water pump 40 to stop.

[0083] As a first embodiment of the communication between the signal generator 90 and the controller 70 , the signal generator 90 and the controller 70 are connected via a wired communication module.

[0084] As a second embodiment of the communication between the signal generator 90 and the controller 70 , the signal generator 90 and the controller 70 are connected via a wireless communication module.

[0085] Preferably, the wireless communication module is configured as a communication module with Internet properties.

[0086] Preferably, the signal generator 90 is configured as a remote control or a smart speaker.

[0087] 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 multi-point segmented zero cold water and hot water supply system, 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 (91), a plurality of water terminals (80), and a plurality of signal generators (90) with unique IDs; 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 signal generator (90) is communicatively connected to the controller (70); The one-way valve (91) is connected in series between the end of the hot water pipeline (10) and the cold water pipeline (20); The signal generator (90) can be matched with and learned from the controller (70) so that the water terminal (80) can be used in conjunction with the signal generator (90). When the controller (70) receives a zero-cold water operation instruction sent by the signal generator (90), it controls the circulating water pump (40) to transport hot water to the vicinity of the water terminal (80) used in conjunction with the signal generator (90).

2. A multi-point segmented zero cold water and hot water supply system according to claim 1, characterized in that: The signal generator (90) and the controller (70) are connected via a wired communication module.

3. A multi-point segmented zero cold water and hot water supply system according to claim 1, characterized in that: The signal generator (90) and the controller (70) are connected via a wireless communication module.

4. A multi-point segmented zero cold water and hot water supply system according to claim 3, characterized in that: The wireless communication module is configured as a communication module with Internet properties.

5. The multi-point segmented zero cold water and hot water supply system according to claim 1 is characterized in that: The signal generator (90) is configured as a remote controller.

6. A multi-point segmented zero cold water and hot water supply system according to claim 1, characterized in that: The signal generator (90) is configured as an intelligent speaker.

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