Directional hot water circulation control system

Abstract

The utility model provides a directional hot water circulation control system which is provided with a human body sensor, and the human body sensor is in signal connection with a temperature control switch, an electromagnetic valve and a circulating pump which are arranged on a circulating pipeline through a controller module, so that when a human body gets close to a water using device, the human body can be controlled by the electromagnetic valve; whether the electromagnetic valve and the circulating pump are started to work or not is controlled through the state of the temperature control switch; when a plurality of groups of circulating pipelines exist, only the circulating pipeline corresponding to the human body is circulated, hot water can enter water equipment more quickly when the circulating pump is opened, when the temperature control switch detects that hot water passes through, a contact of the temperature control switch is disconnected, and meanwhile the controller controls the electromagnetic valve and the circulating pump to be closed, so that the hot water can enter the water equipment more quickly. And at the moment, the circulating pipeline in front of the water consumption equipment is filled with hot water. The hot water circulation control system can convey hot water to the human body induction point position, hot water of other circulation pipelines does not circulate, accurate control over hot water flowing is achieved, and the energy consumption of the water heater is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water circulation control systems, in particular to a directional hot water circulation control system. Background Art

[0002] With the improvement of living standards, home hot water systems have become standard in modern homes. Traditional hot water circulation methods rely on continuous operation of a circulating pump to ensure that the entire piping system is filled with hot water. However, this method causes the hot water in the pipes to gradually cool down after being unused for a long time, triggering the circulating pump to restart and return the cooled hot water to the water heater for reheating. This indiscriminate, non-directional circulation method not only wastes energy but also increases the operating burden of the water heater, causing it to consume a lot of energy.

[0003] Traditional hot water circulation systems typically consist of a water heater, a circulation pump, pipes, and a control system. The water heater heats the water, while the circulation pump delivers it through pipes to various water points, ensuring immediate access to hot water. However, when hot water remains in the pipes for extended periods or when users don't use it for a while, the water temperature gradually drops. Once it falls below the set temperature, the control system activates the circulation pump, returning the cooled water to the water heater for reheating. Because the circulation pump needs to run continuously or frequently to maintain the hot water temperature in the pipes, energy consumption increases significantly. The cooled water needs to be reheated, increasing the operating burden on the water heater and shortening its service life. Utility Model Content

[0004] The purpose of the utility model is to provide a directional hot water circulation control system, which can prevent hot water from circulating in pipes when people are not at the water point, and solve the problem of increased energy consumption caused by repeated heating of circulating water by water heaters.

[0005] The utility model aims to provide a directional hot water circulation control system, comprising a water outlet pipe and a water inlet pipe connected to the water outlet and the water inlet of the water heater respectively, a circulation pipe being connected between the water outlet pipe and the water inlet pipe, a plurality of water-using devices being connected in parallel on the circulation pipe, the circulation pipes being connected to the water inlet pipe after passing through the first water inlet of the water-using devices, and the second water inlet of the water-using devices being connected to the water inlet pipe;

[0006] It also includes a human body sensor and a controller module. A temperature control switch, a solenoid valve and a circulation pump are installed in sequence on the circulation pipeline between the water-using equipment and the water inlet pipeline. The temperature control switch, the solenoid valve and the circulation pump are connected to the human body sensor signal through the controller module.

[0007] Furthermore, a thermostatic valve is installed at the connection point between the water outlet pipe and the circulation pipe, the water outlet pipe is connected to the hot water inlet of the thermostatic valve, the cold water inlet of the thermostatic valve is connected to the water inlet pipe, and the outlet of the thermostatic valve is connected to the inlet of the circulation pipe.

[0008] Furthermore, a shunt pipe is connected between the cold water inlet of the thermostatic valve and the water inlet pipeline.

[0009] Furthermore, a first one-way valve is provided on the circulation pipeline at the point where it merges into the water inlet pipeline.

[0010] Furthermore, the circulation pipeline includes a plurality of water pipes connected in parallel with each other, and each of the water pipes is provided with a branch pipe connected to the first water inlet of the water-using equipment.

[0011] Furthermore, the solenoid valve and the temperature control switch are arranged on the water pipe between the water-using equipment and the water inlet pipe.

[0012] Furthermore, the circulation pump is arranged between the first one-way valve and the solenoid valve.

[0013] Furthermore, the connection point between the circulation pipeline and the water inlet pipeline is located between the connection point between the diversion pipe and the water inlet pipeline and the water heater.

[0014] Furthermore, a second one-way valve is installed on the water inlet pipeline between the connection point between the circulation pipeline and the water inlet pipeline and the connection point between the diversion pipe and the water inlet pipeline.

[0015] Furthermore, a booster pump is provided on the circulation pipeline upstream of the water-using equipment.

[0016] The beneficial effects of this technical solution are as follows: the hot water circulation control system is provided with a human body sensor, which is connected to the temperature control switch, solenoid valve and circulation pump signals arranged on the circulation pipeline through the controller module, so that when a human body approaches the water device, the state of the temperature control switch is used to control whether the solenoid valve and circulation pump are turned on; when there are multiple groups of circulation pipelines, only the circulation pipeline corresponding to the human body is circulated. Since the solenoid valve, temperature control switch and circulation pump are arranged downstream of the water device, they can accelerate the circulation of hot water when they are turned on, so that hot water can enter the water device more quickly. When the temperature control switch detects that hot water is passing through, the temperature control switch contacts are disconnected, and the controller controls the solenoid valve and circulation pump to close at the same time. At this time, the circulation pipeline before the water device is already full of hot water. The hot water circulation control system can deliver hot water to the human body sensing point, and the hot water in other circulation pipelines will not circulate, thereby achieving precise control of the flow of hot water and greatly reducing the energy consumption of the water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a system structure diagram of the utility model.

[0019] Figure 2 This is the control principle diagram of the utility model.

[0020] Explanation of the accompanying drawings: 1-water outlet pipe, 2-water inlet pipe, 3-circulation pipe, 301-water pipe, 4-solenoid valve, 5-circulation pump, 6-first one-way valve, 7-second one-way valve, 8-thermostatic valve, 9-diversion pipe, 10-water equipment. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0024] Example 1

[0025] like Figure 1-Figure 2 As shown, the utility model provides a directional hot water circulation control system, including a water outlet pipe 1 and a water inlet pipe 2 respectively connected to the water outlet and water inlet of the water heater, a circulation pipe 3 is connected between the water outlet pipe 1 and the water inlet pipe 2, the circulation pipe 3 is merged into the water inlet pipe 2 after passing through the first water inlet of the water-using equipment 10, and the second water inlet of the water-using equipment 10 is connected to the water inlet pipe 2; wherein the water inlet pipe 2 is connected to the cold water supply pipe entering the house, and water is supplied to the water inlet pipe 2 by the cold water supply pipe.

[0026] Specifically, the circulation pipeline 3 includes multiple water pipes 301 connected in parallel, and each water pipe 301 is provided with a branch pipe connected to the first water inlet of the water equipment 10 .

[0027] The system also includes a human body sensor and a controller module. The human body sensor senses the human's stay time and feeds back an electrical signal to the controller module, which executes the corresponding instruction operation. A temperature control switch, a solenoid valve 4 and a circulation pump 5 are installed in sequence on the circulation pipeline 3 between the water-using equipment 10 and the water inlet pipeline 2. The solenoid valve 4 and the temperature control switch are arranged on the water pipeline 301 between the water-using equipment 10 and the water inlet pipeline 2, that is, the temperature control switch, the solenoid valve 4 and the circulation pump 5 are arranged at the downstream position of the water-using equipment 10. The temperature control switch, the solenoid valve 4 and the circulation pump 5 are connected to the human body sensor signal through the controller module. When the human body sensor senses that the user is approaching the water-using equipment 10, it feeds back an electrical signal to the controller module and the temperature control switch. The temperature control switch is a normally closed switch, that is, it is in a normally closed state when there is no hot water in the pipeline. When there is hot water in the pipeline, the contacts are disconnected. When there is no hot water in the pipeline, the temperature control switch feeds back a signal to the controller, and the controller controls the solenoid valve 4 and the circulation pump 5 to open, so that the water pipeline 301 corresponding to the water-using equipment 10 is quickly filled with hot water. When there is hot water in the pipeline, the contacts of the temperature control switch are disconnected, and the temperature control switch feeds back a signal to the controller, and the controller controls the solenoid valve 4 and the circulation pump 5 to close.

[0028] A first one-way valve 6 is installed on the circulation line 3 where it joins the water inlet line 2, preventing water from entering the circulation line 3 from the outlet of the circulation line 3. A circulation pump 5 is located between the first one-way valve 6 and the solenoid valve 4. The connection point between the circulation line 3 and the water inlet line 2 is located between the connection point between the shunt pipe 9 and the water inlet line 2 and the water heater. A second one-way valve 7 is installed on the water inlet line 2 between the connection point between the circulation line 3 and the water inlet line 2 and the connection point between the shunt pipe 9 and the water inlet line 2 to prevent backflow of hot water from the circulation line 3 into the water inlet line 2.

[0029] In order to increase the outlet pressure of hot water, a booster pump may be provided on the circulation pipeline 3 upstream of the water-using device 10 .

[0030] Example 2

[0031] Compared with Example 1, the technical features of this embodiment are as follows: a thermostatic valve 8 is installed at the connection point between the water outlet pipe 1 and the circulation pipe 3, the water outlet pipe 1 is connected to the hot water inlet of the thermostatic valve 8, a diverter pipe 9 is connected between the cold water inlet of the thermostatic valve 8 and the water inlet pipe 2, the cold water inlet of the thermostatic valve 8 is connected to the water inlet pipe 2 through the diverter pipe 9, and the outlet of the thermostatic valve 8 is connected to the inlet of the circulation pipe 3; it can realize the mixed output of hot and cold water at the outlet end of the water heater, which avoids repeated adjustment of the water temperature on the one hand, and avoids a large amount of hot water entering the circulation water circuit at the same time, and causing heat waste due to long-term unused.

[0032] Example 3

[0033] Compared with Example 1, the technical feature of this embodiment is that: a solenoid valve is provided at the inlet end of each water pipe 301, and the solenoid valve is connected to the human body sensor signal through the controller module. When the controller module controls the temperature control switch, the solenoid valve 4 and the circulation pump 5 to turn on, the solenoid valve at the inlet end of the corresponding water pipe 301 is turned on at the same time to avoid water cross-contamination between multiple water-using equipment 10.

[0034] The directional hot water circulation control system provided by the present technical solution is provided with a human body sensor, which is connected to the temperature control switch, solenoid valve 4 and circulation pump 5 arranged on the circulation pipeline 3 through the controller module. When the human body approaches the water device 10 and there is no hot water in the circulation pipeline 3, the normally closed temperature control switch does not detect hot water, and feeds back an electrical signal to the controller, which controls the solenoid valve 4 and circulation pump 5 to make the hot water circulate in the circulation pipeline 3. When there are multiple groups of circulation pipelines 3, only the circulation pipeline 3 corresponding to the human body is circulated. Because the solenoid valve 4, temperature control switch and circulation pump 5 are connected, the hot water is circulated in the circulation pipeline 3. Pump 5 is located downstream of water-using device 10, so when all three are turned on, they can accelerate the circulation of hot water, allowing hot water to enter water-using device 10 more quickly. When the temperature control switch detects that hot water is passing through, the temperature control switch contacts open when exposed to heat, and a signal is simultaneously fed back to the controller module, which controls the solenoid valve 4 and circulation pump 5 to close. At this point, the circulation pipeline 3 upstream of water-using device 10 is already full of hot water, and water-using device 10 can continuously discharge hot water. This hot water circulation control system can deliver hot water to the human body sensing point, while hot water in other circulation pipelines 3 does not circulate, greatly reducing the energy consumption of the water heater. When a human body approaches water-using device 10 and there is hot water in the circulation pipeline 3, the temperature control switch is in the open contact state, and the controller does not control the circulation pump 5 and solenoid valve 4 to open.

[0035] The human body sensor can be turned off manually, or the circulation of each water use point can be controlled through smart connection with a mobile phone. This is generally used in the summer when the demand for hot water is not high.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A directional hot water circulation control system, characterized in that: The water heater comprises a water outlet pipe and a water inlet pipe respectively connected to the water outlet and the water inlet of the water heater, a circulation pipe is connected between the water outlet pipe and the water inlet pipe, a plurality of water-using devices are connected in parallel on the circulation pipe, the circulation pipes are connected to the water inlet pipe after passing through the first water inlet of the water-using devices, and the second water inlet of the water-using devices is connected to the water inlet pipe; It also includes a human body sensor and a controller module. A temperature control switch, a solenoid valve and a circulation pump are installed in sequence on the circulation pipeline between the water-using equipment and the water inlet pipeline. The temperature control switch, the solenoid valve and the circulation pump are connected to the human body sensor signal through the controller module. A first one-way valve is provided on the circulation pipeline where it merges into the water inlet pipeline; the circulation pipeline includes multiple water pipelines connected in parallel, each of which is provided with a branch pipe connected to the first water inlet of the water-using equipment; each of the water pipelines is provided with a solenoid valve and a temperature control switch.

2. The directional hot water circulation control system according to claim 1, characterized in that: A thermostatic valve is installed at the connection point between the water outlet pipe and the circulation pipe. The water outlet pipe is connected to the hot water inlet of the thermostatic valve, the cold water inlet of the thermostatic valve is connected to the water inlet pipe, and the outlet of the thermostatic valve is connected to the inlet of the circulation pipe.

3. The directional hot water circulation control system according to claim 2, characterized in that: A shunt pipe is connected between the cold water inlet of the thermostatic valve and the water inlet pipeline.

4. The directional hot water circulation control system according to claim 1, characterized in that: The solenoid valve and the temperature control switch are arranged on the water pipe between the water-using equipment and the water inlet pipe.

5. The directional hot water circulation control system according to claim 1, characterized in that: The circulation pump is arranged between the first one-way valve and the solenoid valve.

6. The directional hot water circulation control system according to claim 3, characterized in that: The connection point between the circulation pipeline and the water inlet pipeline is located between the connection point between the diversion pipe and the water inlet pipeline and the water heater.

7. The directional hot water circulation control system according to claim 6, characterized in that: A second one-way valve is installed on the water inlet pipeline between the connection point between the circulation pipeline and the water inlet pipeline and the connection point between the diversion pipe and the water inlet pipeline.

8. The directional hot water circulation control system according to claim 1, characterized in that: A booster pump is provided on the circulation pipeline upstream of the water-using equipment.

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