Zero-waiting circulation system with water-controlled water heater matched with low-pressure electric water heater

Abstract

The utility model discloses a zero-waiting circulating system with a water control water heater matched with a low-pressure electric water heater, which comprises a cold water header pipe, a main water heater with a water control function, a circulating pump mounted in the main water heater, a hot water pipeline, a water return pipeline, a one-way valve and the low-pressure electric water heater, the low-pressure electric water heater comprises an electric heating piston tank, a water inlet temperature sensor, a first control valve, a second control valve, a water flow sensor and a controller. The electric heating piston tank is installed in the whole hot water circulation system, zero waiting of one water consumption point is achieved, waiting time of the water consumption point connected with the electric heating piston tank can be greatly shortened, meanwhile, the circulating pump can be started for circulation when any water consumption point is opened for the second time, and the water consumption is greatly reduced. Therefore, cold water waste of other water consumption points is avoided, the general trend of energy conservation and environmental protection is better met, the requirement for multi-point water consumption is met, and the requirement for use of zero-waiting people is met.

Description

Technical Field

[0001] This utility model relates to the field of domestic hot water technology, and in particular to a zero-wait circulation system that combines a water-controlled water heater with a low-pressure electric water heater. Background Technology

[0002] To meet people's daily needs, such as hot water for showering, washing dishes, and washing up, a water heater with a large storage capacity is usually used as the main water heater, which corresponds to multiple water terminals. However, since the main water heater is far from some of these water terminals, a long stretch of cold water needs to be released during use, resulting in water waste and long waiting times for users. To address these shortcomings, a zero-cold-water hot water circulation system has emerged on the market.

[0003] The first technical solution is to add a circulation pump inside the water heater. When hot water is used, the return water pipe is used to circulate and heat the entire hot water pipe. Since users use hot water very randomly, the energy consumption of circulation throughout the day is high. Fixed-point circulation can only provide hot water instantly during the circulation period. Each circulation requires waiting for hot water, making the existing semi-automatic method of connecting to Wi-Fi and controlling by a mobile APP unsuitable for people who need zero waiting time.

[0004] The second technical solution is to use a thermal storage tank and a reversing valve to store heat and solve the problem of cold water in the hot water pipes in the early stage, so as to achieve instant hot water. However, for users with many water points, the cost of installing thermal storage tanks for all of them is high. Moreover, in most places of use, there are few terminals that frequently use hot water. Installing a thermal storage tank will cause cold water from other water points to be directly wasted by users. This not only wastes water resources, but also does not conform to the general trend of energy conservation and environmental protection, and is difficult to meet the needs of multi-point water use. Utility Model Content

[0005] Based on this, it is necessary to provide a zero-wait circulation system that combines a water-controlled water heater with a low-pressure electric water heater to address the above-mentioned technical problems. The system includes a cold water main pipe, a main water heater with water control function, a circulation pump installed inside the main water heater, a hot water pipe, a return water pipe, a one-way valve, and a low-pressure electric water heater. The main water heater is an electrically heated storage water heater installed on the balcony, and the low-pressure electric water heater is installed on the hot water pipe.

[0006] The hot water pipeline is equipped with a near-end water point, a middle-end water point and a far-end water point, and the hot water pipeline and the return water pipeline are fully wrapped with 1.35mm thick insulation cotton.

[0007] The low-pressure electric water heater includes an electric heating piston tank, an inlet water temperature sensor, a first control valve, a second control valve, a water flow sensor, and a controller. The outlet of the main water heater is connected to the inlet of the first and second control valves via a hot water pipe. The inlet water temperature sensor is installed at the inlet of the first and second control valves. The outlet of the first control valve is inserted from the upper side of the electric heating piston tank through a mixing pipe and extends to the bottom of the hot water storage chamber. The outlet of the electric heating piston tank is connected to a T-junction pipe via a water flow sensor. The other two ends of the T-junction pipe are connected to the middle water point and the far water point. The drain of the electric heating piston tank is connected to the inlet of the main water heater via a return water pipe and a one-way valve. The electric heating piston tank, the inlet water temperature sensor, the first control valve, the second control valve, and the water flow sensor are all electrically connected to the controller.

[0008] Furthermore, the main water heater has a vertical structure and a water storage capacity of 120-150 liters.

[0009] Furthermore, the circulation pump starts circulation after sensing secondary water flow, and stops circulation after the water flow stops.

[0010] Furthermore, there are multiple near-end water points, and these multiple near-end water points are connected in series by water pipes on the hot water pipeline.

[0011] Furthermore, the electrically heated piston tank is equipped with an electric heater for heating the hot water storage chamber.

[0012] Furthermore, the low-voltage electric water heater is powered by 24 or 36 volts.

[0013] Furthermore, a thermostatic valve is installed at the outlet of the main water heater.

[0014] Furthermore, the return water pipe is a cold water pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The zero-wait circulation system provided by this utility model, which combines a water-controlled water heater with a low-pressure electric water heater, not only achieves zero waiting time at one point of use by installing an electric heating piston tank in the entire hot water circulation system, but also greatly shortens the waiting time at the points of use connected to the electric heating piston tank. At the same time, opening any point of use a second time can start the circulation pump to circulate the water, thereby avoiding the waste of cold water at other points of use. This is more in line with the trend of energy conservation and environmental protection, suitable for the needs of multiple points of use, and meets the needs of people who require zero waiting time. Attached Figure Description

[0017] Figure 1A schematic diagram of the zero-waiting circulation system for the water-controlled water heater and low-voltage electric water heater provided by this utility model;

[0018] Figure 2 A schematic diagram of the secondary opening of the near-end water point in the zero-wait circulation system of the water-controlled water heater and the low-pressure electric water heater provided by this utility model;

[0019] Figure 3 A schematic diagram of the circulation structure of the secondary opening near-end water point of the zero-waiting circulation system for the water-controlled water heater and low-pressure electric water heater provided by this utility model;

[0020] Figure 4 A schematic diagram of the zero-wait structure of the water-controlling water heater and the low-pressure electric water heater in conjunction with the present invention at the mid-term water point;

[0021] Figure 5 A schematic diagram of the structure of the remote water point for use in the zero-wait circulation system of the water-controlled water heater and the low-pressure electric water heater provided by this utility model.

[0022] Figure 6 This utility model provides a schematic diagram of the cold water return system using a water-controlled water heater that works in conjunction with a low-pressure electric water heater.

[0023] The markings in the diagram are explained as follows:

[0024] 1. Cold water main pipe; 2. Main water heater; 3. Circulation pump; 4. Hot water pipe; 5. Return water pipe; 6. Check valve; 401. Near-end water point; 402. Mid-end water point; 403. Remote water point; 701. Electric heating piston tank; 702. Inlet water temperature sensor; 703. First control valve; 704. Second control valve; 705. Water flow sensor; 706. Controller; 707. T-connector. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly, completely and in detail described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] To solve this technical problem, this utility model provides a zero-wait circulation system that combines a water-controlled water heater with a low-voltage electric water heater, such as... Figure 1-5As shown, it includes a cold water main pipe 1, a main water heater 2 with water control function, a circulation pump 3 installed inside the main water heater 2, a hot water pipe 4, a return water pipe 5, a one-way valve 6, and a low-pressure electric water heater. The main water heater 2 is an electric heating storage water heater installed on the balcony. The main water heater 2 has a vertical structure and a water storage capacity of 120-150 liters. The circulation pump 3 starts circulation after sensing the secondary flow of water and stops circulation after the water flow stops. The low-pressure electric water heater is installed on the hot water pipe 4.

[0027] The hot water pipe 4 is equipped with a near-end water point 401, a middle-end water point 402, and a far-end water point 403. The hot water pipe 4 and the return water pipe 5 are covered with 1.35mm thick insulation cotton. There are multiple near-end water points 401, which are connected in series by PPR pipes on the hot water pipe 4. It also includes a cold water pipe connected to the near-end water point 401, the middle-end water point 402, and the far-end water point 403. The other end of the cold water pipe is connected to the cold water main pipe 1 and is used to adjust the water temperature of the near-end water point 401, the middle-end water point 402, and the far-end water point 403.

[0028] The low-pressure electric water heater is installed at a point of use where waiting is not desired. Specifically, it includes an electric heating piston tank 701, an inlet water temperature sensor 702, a first control valve 703, a second control valve 704, a water flow sensor 705, and a controller 706. The outlet of the main water heater 2 is connected to the inlet of the first control valve 703 and the second control valve 704 via a hot water pipe 4. The inlet water temperature sensor 702 is installed at the inlet of the first control valve 703 and the second control valve 704. The outlet of the first control valve 703 is inserted from the upper side of the electric heating piston tank 701 through a mixing pipe and extends to the bottom of the hot water storage chamber. The outlet of the electric heating piston tank 701 is connected to a three-way pipe 707 via the water flow sensor 705. The other end of the three-way pipe 707... The two ends are connected to the middle water point 402 and the far water point 403. The drain outlet of the electric heating piston tank 701 is connected to the inlet of the main water heater 2 through the return water pipe 5 and the one-way valve 6. The electric heating piston tank 701, the inlet water temperature sensor 702, the first control valve 703, the second control valve 704 and the water flow sensor 705 are all electrically connected to the controller 706. The electric heating piston tank 701 is equipped with a heat-insulating piston and forms a hot water storage chamber and a cold water storage chamber. The electric heating piston tank 701 is equipped with a heater for heating the hot water storage chamber to maintain the temperature of the hot water storage chamber. Since the power of the circulating pump 3 to transport hot water is low, it can form a low-voltage electric water heater and is powered by 24 or 36 volts.

[0029] In this embodiment, a thermostatic valve is installed at the outlet of the main water heater 2. The thermostatic valve ensures that the hot water outlet of the main water heater 2 directly outputs constant temperature hot water, so that the near-end water point 401, the middle-end water point 402 and the far-end water point 403 can use ordinary faucets.

[0030] like Figure 6 As shown, in this embodiment, the return water pipe 5 is a cold water pipe connected to the cold water main pipe 1.

[0031] The zero-wait cycle system for water-controlled water heaters and low-voltage electric water heaters provided by this utility model is used as follows:

[0032] like Figure 2 As shown, in the initial state, the first control valve 703 is closed and the second control valve 704 is open. Opening any nearby water point 401 twice causes the circulation pump 3 to detect the second opening and start the circulation function. Figure 3 As shown, at this time, hot water enters the water heater for circulation along the hot water pipe 4, the second control valve 704, the return water pipe 5 and the one-way valve 6. After the circulation is completed, the hot water can be used by opening the near-end water point 401, thus avoiding the waste of water resources.

[0033] like Figure 4 As shown, in the initial state, the first control valve 703 is closed and the second control valve 704 is open. When in use, the intermediate water point 402 is opened. At this time, due to the reverse cutoff of the one-way valve 6, the cold water main pipe 1 passes through the main water heater 2 and then enters the cold water storage chamber on the right side of the electric heating piston tank 701 along the hot water pipe 4. After passing through the water flow sensor 705 and the three-way pipe 707, it flows out from the intermediate water point 402. At this time, the water flow sensor 705 transmits a signal to the controller 706, which then closes the second control valve 704, stopping the water flow. Next, the second control valve 704 is opened, and hot water flows out. The circulation pump 3 detects the secondary opening and starts the circulation function. Then, the piston inside the electric heating piston tank 701 moves to the left, discharging the hot water from the storage chamber... Water flows out from the intermediate water point 402, thus achieving zero waiting time for hot water use. Once the inlet water temperature sensor 702 detects a suitable temperature, the controller 706 opens the first control valve 703 and closes the second control valve 704, enabling hot water relay. After the intermediate water point 402 is closed, the hot water in the hot water pipe 4 enters the hot water storage chamber in the electric heating piston tank 701. At this time, the piston moves to the right, and the one-way valve 6 opens. Once the hot water storage chamber is full, the circulation pump 3 automatically stops. When the inlet water temperature sensor 702 detects an unsuitable temperature, the first control valve 703 is closed, and the second control valve 704 is opened, entering standby mode. When the remote water point 403 is opened, the hot water output method is the same as above, which can greatly reduce the time for cold water to be released.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A zero waiting cycle system for a water control water heater and a low pressure electric water heater, comprising a cold water main, a main water heater with a water control function, a circulating pump installed in the main water heater, a hot water line, a return water line, a one-way valve and a low pressure electric water heater, characterized in that, The main water heater is an electric heating water storage type water heater and is installed on a balcony, and the low-voltage electric water heater is installed on a hot water pipeline. A near-end water point, a middle-end water point and a far-end water point are installed on the hot water pipeline, and the hot water pipeline and a return water pipeline are entirely wrapped with 1.35 mm thick thermal insulation cotton. The low-voltage electric water heater comprises an electric heating piston tank, a water inlet temperature sensor, a first control valve, a second control valve, a water flow sensor and a controller, a water outlet end of the main water heater is connected with inlets of the first control valve and the second control valve through the hot water pipeline, the water inlet temperature sensor is installed at the inlets of the first control valve and the second control valve, a water outlet end of the first control valve is inserted into the electric heating piston tank from an upper side of the electric heating piston tank and extends to a bottom of a hot water storage cavity through a mixed water pipeline, a three-way pipe is connected to an outlet end of the electric heating piston tank through the water flow sensor, the other two ends of the three-way pipe are connected with the middle-end water point and the far-end water point, a water outlet of the electric heating piston tank is connected with a water inlet of the main water heater through a return water pipeline and a one-way valve, and the electric heating piston tank, the water inlet temperature sensor, the first control valve, the second control valve and the water flow sensor are electrically connected with the controller.

2. The water control water heater and low pressure electric water heater matching zero waiting cycle system according to claim 1, characterized in that, The main water heater has a vertical structure, and a water storage capacity of the main water heater is 120-150 liters.

3. The water control water heater and low pressure electric water heater matching zero waiting cycle system according to claim 1, characterized in that, The circulating pump starts circulation after sensing secondary flow of water flow and stops circulation after water flow stops.

4. The water control water heater and low pressure electric water heater matching zero waiting cycle system according to claim 1, characterized in that, The number of the near-end water points is multiple, and multiple near-end water points are integrally connected in series on the hot water pipeline by water pipes.

5. The water control water heater and low pressure electric water heater matching zero waiting cycle system according to claim 1, characterized in that, An electric heater for heating the hot water storage cavity is arranged on the electric heating piston tank.

6. The water control water heater and low pressure electric water heater cooperating zero waiting cycle system according to claim 1, characterized in that, The low-voltage electric water heater is powered by 24 or 36 volts.

7. The water control water heater and low pressure electric water heater cooperating zero waiting cycle system according to claim 1, characterized in that, A thermostatic valve is installed at the water outlet end of the main water heater.

8. The water control water heater and low pressure electric water heater cooperating zero waiting cycle system according to claim 1, characterized in that, The return water pipeline is a cold water pipeline.

Images