WO2021238494A1

WO2021238494A1 - Smart solar water heater system

Info

Publication number: WO2021238494A1
Application number: PCT/CN2021/087647
Authority: WO
Inventors: 王强; 宋帅迪; 程傲霜
Original assignee: 南通大学
Priority date: 2020-05-29
Filing date: 2021-04-16
Publication date: 2021-12-02
Also published as: CN111595036B; CN111595036A

Abstract

The present invention relates to a smart solar water heater system, comprising: a solar heat collector tube, a water tank, a hot water delivery pipe, and a heat insulation barrel. A horizontal fixed separation plate and a rotatable movable board are provided in the heat insulation barrel; in the heat insulation barrel, the area above the fixed separation plate is divided into a first hot water cavity and a second hot water cavity by the movable board, and the area below the fixed separation plate is divided into a first cold water cavity and a second cold water cavity by the movable board. In the present invention, the heat insulation barrel is ingeniously designed, a separation plate is adopted to separate cold water and hot water, and eight valves work in conjunction so that cold water is injected to change the volumes of the cold water cavities so as to drive the movable board to rotate, making hot water flow out of the hot water cavity; due to compression of the movable board, the hot water flowing out has water pressure, and meets the needs for use; moreover, cold water is injected into one of the cold water cavities, and cold water in the other cold water cavity is pressed out and pushed into the water tank of the water heater, thereby completing water replenishment for the water tank of the water heater.

Description

An intelligent solar water heater system

Technical field

The invention relates to an intelligent solar water heater system, which belongs to the technical application field of energy saving and emission reduction.

Background technique

At present, solar water heaters are water heater equipment that our country vigorously promotes popularization. Compared with other water heaters, solar water heaters not only save conventional energy, do not produce any pollutants or wastes, and can efficiently produce hot water, but also have almost zero operating costs. Long-term use has good economic benefits and a long service life, which is a practical response. my country's call for building an energy-saving and environment-friendly society. Solar water heaters have many advantages, but even so, it also has some technical shortcomings that limit its development.

In order to make better use of energy, solar water heaters are generally installed on the roof, and the hot water delivery pipes need to extend from the roof to the room. In the process of use, the cold water stored in a large number of pipes will be directly discharged, causing a waste of water resources; while the hot water flowing through the long pipes will cause excessive heat loss and lower water temperature; after use, it will stay in The hot water in the pipeline cannot be used, and waste is produced again; and in winter, the pipeline exposed outdoors is easy to freeze and crack.

technical problem

The purpose of the present invention is to overcome the above-mentioned defects of the prior art and provide an intelligent solar water heater system and a control method thereof, which will not cause waste of cold water and hot water in the pipeline.

Technical solutions

In order to achieve the purpose of the present invention, the intelligent solar water heater system provided by the present invention includes: a solar heat collection tube, a water tank and a hot water delivery pipe arranged from top to bottom, characterized in that: the hot water delivery pipe is provided with two -Position three-way solenoid valve, the two-position three-way solenoid valve has a water inlet at the upstream end, a water outlet at the downstream end and an air inlet communicating with the atmosphere; the intelligent solar water heater system also includes a horizontal fixed partition inside. The upper area of the fixed partition in the heat preservation bucket is divided into a first hot water cavity and a second hot water cavity by the movable template, and the lower area of the fixed partition in the heat preservation bucket is divided into a first hot water cavity and a second hot water cavity. The movable template is divided into a first cold water cavity and a second cold water cavity; by increasing the volume of the first cold water cavity or the second cold water cavity, the movable template is driven to rotate so that hot water flows out of the second hot water cavity or the first hot water cavity The hot water delivery pipe is divided into two ways, the first way is connected to the first hot water cavity through the first hot water inlet valve, and the second way is connected to the second hot water cavity through the second hot water inlet valve; A hot water cavity and a second hot water cavity are respectively connected to a first hot water outlet pipe provided with a first hot water outlet valve, and a second hot water outlet pipe provided with a second hot water outlet valve; the first cold water cavity is connected to the device There is a first cold water inlet pipe with a first cold water inlet valve and a first cold water outlet pipe with a first cold water outlet valve; the second cold water cavity is respectively connected to a second cold water inlet pipe with a second cold water inlet valve and a device A second cold water outlet pipe with a second cold water outlet valve; the first cold water inlet pipe and the second cold water inlet pipe are connected to municipal tap water; the first cold water outlet pipe and the second cold water outlet pipe are connected to the water tank; the intelligent The solar water heater system also includes a controller for controlling the two-position three-way solenoid valve, the first hot water inlet valve, the second hot water inlet valve, the first hot water outlet valve, the second hot water outlet valve, The first cold water inlet valve, the second cold water inlet valve, the first cold water outlet valve and the second cold water outlet valve.

Beneficial effect

The invention adds a heat preservation barrel to store hot water for users to use. In the normal state, there is no water in the hot water pipe. By switching the state of the two-position three-way solenoid valve at the upper end of the hot water pipe, the water tank can be intermittently filled with water to the insulation barrel. After the water tank is discharged, the upper end of the hot water pipe is open to the atmosphere. The hot water flows into the insulation barrel under the action of gravity, which effectively utilizes the hot water in the pipe and avoids the waste of hot water. Since there is no water in the hot water pipe under normal conditions, it also solves the problem of energy waste caused by the hot water staying in the pipe for a long time, and the hot water pipe is easy to be frozen and cracked in winter.

The present invention has ingeniously designed the heat preservation barrel. The partition is used to separate the cold water and the hot water. Through the cooperation between the eight valves, the cold water can be injected to change the volume of the cold water cavity to drive the movable template to rotate and make the hot water from the hot water. Flow out from the cavity, due to the compression of the movable template, the hot water that flows out has water pressure, which meets the needs of use; at the same time, because cold water is injected into one of the cold water chambers, the cold water in the other cold water chamber is squeezed out and pushed into the water tank of the water heater Inside, the water replenishment of the water heater tank is completed.

Preferably, a heating tube is provided in the heat preservation barrel. When the light conditions are not good or the water temperature in the insulation barrel is too low, the water in the insulation barrel is heated through the heating pipe, which improves the applicability of the solar water heater in rainy days or in winter. When the light conditions are not ideal, the water in the water tank of the water heater can reach a certain temperature (for example, 25°C), and this part of the water flows into the insulation barrel for further heating, which can meet the needs of higher water temperature (for example, 40°C). Energy is effectively used and energy consumption is reduced.

Description of the drawings

The present invention will be further explained below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of the structure of the intelligent solar water heater system of the present invention.

Figure 2 is a schematic diagram of the hot water outlet pipe of the intelligent solar water heater system of the present invention.

The signs in the figure are as follows: 1- solar collector tube, 2- water tank, 3- heat transfer pipe, 4- insulation barrel, 41- fixed partition; 42- movable template; 5- two-position three-way solenoid valve, 61-th A hot water inlet valve, 62-the second hot water inlet valve, 71-the first hot water outlet valve, 72-the second hot water outlet valve, 73-the first hot water outlet pipe, 74-the second hot water Outlet pipe; 81-the first cold water inlet valve, 82-the second cold water inlet valve, 83-the first cold water inlet pipe, 84-the second cold water inlet pipe, 91-the first cold water outlet valve, 92-the second cold water Outlet valve, 93-the first cold water outlet pipe, 94-the second cold water outlet pipe, 10-bracket, 11-kitchen water supply pipe, 12-bathroom water supply pipe, A-first hot water cavity, B-second hot water cavity , C-the first cold water cavity, D-the second cold water cavity.

Embodiments of the present invention

The present invention will be further described below in conjunction with the drawings and specific embodiments.

As shown in FIG. 1, the intelligent solar water heater system of the embodiment of the present invention mainly includes: a solar heat collection pipe 1, a water tank 2, a hot water delivery pipe 3 arranged from top to bottom, and a heat preservation barrel 4 located indoors. In this example, the solar heat collection tube 1 and the water tank 2 are fixed on the roof of the building by a bracket 10. The solar heat collection tube adopts vacuum heat collection tube, which has better heat collection efficiency. The hot water delivery pipe 3 is wrapped with an insulation layer to reduce heat energy loss.

As shown in Figure 1, the upper end of the hot water delivery pipe 3 is provided with a two-position three-way solenoid valve 5. The two-position three-way solenoid valve 5 has a water inlet at the upstream end, a water outlet at the downstream end, and an air inlet that communicates with the atmosphere. . The two-position three-way solenoid valve 5 has two status positions.

In the first state, the water inlet of the two-position three-way solenoid valve 5 is connected to the water outlet, and the air inlet is closed. At this time, the water tank 2 injects water into the heat preservation tub 4 through the hot water delivery pipe 3.

In the second state, the water inlet of the two-position three-way solenoid valve 5 is closed, and the air inlet is connected to the water outlet. At this time, the water tank 2 stops discharging water, and the hot water remaining in the hot water delivery pipe 3 flows into the insulating tub 4 under the action of gravity. And to ensure that there is no water in the hot water delivery pipe 3 under normal conditions.

The thermal insulation barrel 4 of this embodiment is provided with a horizontal fixed partition 41 and a rotatable movable template 42. As shown in Figure 1, the upper area of the fixed partition 41 is divided into a first hot water chamber A and a second hot water chamber B by the movable template 42, and the lower area of the fixed partition 41 is divided into a first cold water chamber by the movable template 42 C. The second cold water chamber D. By increasing the volume of the first cold water cavity C or the second cold water cavity D, the movable template 42 is driven to rotate, so that hot water flows out of the second hot water cavity B or the first hot water cavity A.

The thermal insulation barrel 4 of this embodiment is provided with four water inlets and four water outlets, and the opening and closing of the pipeline are controlled by valve opening to realize the functions. The specific settings of piping and valves are as follows.

The hot water delivery pipe 3 is divided into two paths, the first path is connected to the first hot water chamber A through the first hot water inlet valve 61, and the second path is connected to the second hot water chamber B through the second hot water inlet valve 62. The water in the water tank 2 flows into the first hot water cavity A or the second hot water cavity B through the hot water delivery pipe 3.

The first hot water cavity A and the second hot water cavity B are respectively connected to a first hot water outlet pipe 73 provided with a first hot water outlet valve 71 and a second hot water outlet pipe 74 provided with a second hot water outlet valve 72 . As shown in FIG. 2, the first hot water outlet pipe 73 and the second hot water outlet pipe 74 are connected to the kitchen water supply pipe 11 and the bathroom water supply pipe 12 after confluence. The first hot water cavity A and the second hot water cavity B are used for receiving hot water from the water tank 2 for storage and providing hot water for users. In this example, electric heaters are provided in the first hot water cavity A and the second hot water cavity B of the heat preservation tub 4. When the light conditions are not good or the water temperature in the insulation barrel is too low, the water in the insulation barrel is heated through the heating pipe, which improves the applicability of the solar water heater in rainy days or in winter.

The first cold water cavity C is connected to a first cold water inlet pipe 83 provided with a first cold water inlet valve 81 and a first cold water outlet pipe 93 provided with a first cold water outlet valve 91. The first cold water inlet pipe 83 and the second cold water inlet pipe 84 are connected to municipal tap water. The second cold water cavity D is respectively connected to a second cold water inlet pipe 84 provided with a second cold water inlet valve 82 and a second cold water outlet pipe 94 provided with a second cold water outlet valve 93. The first cold water outlet pipe 93 and the second cold water outlet pipe 94 are connected to the water tank 2. Water is injected into the cold water cavity by opening the cold water inlet valve, thereby changing the volume of the cold water cavity to drive the movable template 42 to rotate. The movable template 42 rotates, on the one hand, the hot water in the hot water cavity is discharged for users to use; on the other hand, the cold water in the squeezed cold water cavity is pressed into the water tank 2 through a pipe to realize water supply to the water tank 2.

The intelligent solar water heater system also includes a controller for controlling the aforementioned two-position three-way solenoid valve 5, the first hot water inlet valve 61, the second hot water inlet valve 62, and the first hot water outlet valve 71, The second hot water outlet valve 72, the first cold water inlet valve 81, the second cold water inlet valve 82, the first cold water outlet valve 91, and the second cold water outlet valve 93, to achieve functions.

In this embodiment, the movable template 42 rotates within a certain angle range, and the rotation angle of the movable template 42 is detected by a position sensor. When the movable template 42 rotates to the limit position, the opening and closing state of the valve is changed to realize the continuous water supply of the heat preservation barrel 4. The position sensor is connected to the controller.

The control method of the intelligent solar water heater system of this embodiment is as follows: when the user is using water, the water heater is switched between mode I and mode II, and the switching condition is that the movable template 42 rotates to the limit position, and the limit position of the movable template 42 is performed by the position sensor. Detection.

Mode I: Open the first cold water inlet valve 81, the second cold water outlet valve 92, the first hot water outlet valve 71 and the second hot water inlet valve 62, and close the first cold water outlet valve 91 and the second cold water inlet valve 82. The first hot water inlet valve 61 and the second hot water outlet valve 72; the tap water enters the first cold water cavity C through the first cold water inlet pipe 83 to increase its volume, and the movable template 42 is driven to rotate counterclockwise, and the first hot water The water cavity A and the second cold water cavity D are squeezed by the movable template 42 and the volume becomes smaller, so that the hot water in the first hot water cavity A flows out through the first hot water outlet pipe 73 for users to use, and the second cold water cavity D The cold water inside flows into the water tank 2 through the second cold water outlet pipe 94, so that the user can supply water to the water heater at the same time.

Mode II: Open the second cold water inlet valve 82, the first cold water outlet valve 91, the second hot water outlet valve 72 and the first hot water inlet valve 61, and close the second cold water outlet valve 92 and the first cold water inlet valve 81. The second hot water inlet valve 62 and the first hot water outlet valve 71; tap water enters the second cold water cavity D through the second cold water inlet pipe 84 to increase the volume, and drives the movable template 42 to rotate clockwise, and the second hot water The water cavity B and the first cold water cavity C are squeezed by the movable template 42 and the volume becomes smaller, so that the hot water in the second hot water cavity B flows out through the second hot water outlet pipe 74 for users to use, and the first cold water cavity C The cold water inside flows into the water tank 2 through the first cold water outlet pipe 93, so that the water heater can be refilled while the user uses water.

When the solar water heater is in mode I, the two-position three-way solenoid valve 5 is controlled to operate, so that the water inlet and the water outlet are connected, and the hot water in the water tank 2 passes through the hot water pipe 3 and the second hot water inlet valve 62 to the second Hot water chamber B supplements hot water; when the solar water heater is in mode II, the two-position three-way solenoid valve 5 is controlled to make its water inlet and outlet connected, and the hot water in the water tank 2 passes through the heat transfer pipe 3 and the first heat The water inlet valve 61 supplements the second hot water chamber A with hot water.

In addition to the above-mentioned embodiments, the present invention can also have other embodiments. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the protection scope of the present invention.

Claims

An intelligent solar water heater system, comprising: a solar heat collecting pipe (1), a water tank (2) and a hot water delivery pipe (3) arranged from top to bottom, and is characterized by:

The upper end of the hot water delivery pipe (3) is provided with a two-position three-way solenoid valve (5). The two-position three-way solenoid valve (5) has a water inlet at the upstream end, a water outlet at the downstream end, and communication with the atmosphere. The air inlet;

The intelligent solar water heater system also includes a heat preservation bucket (4) equipped with a horizontal fixed partition (41) and a rotatable movable template (42), and the upper part of the fixed partition (41) in the heat preservation bucket (4) The area is divided into the first hot water cavity (A) and the second hot water cavity (B) by the movable template (42), and the lower area of the fixed partition (41) in the heat preservation barrel (4) is divided by the movable template (42) It is divided into a first cold water cavity (C) and a second cold water cavity (D); by increasing the volume of the first cold water cavity (C) or the second cold water cavity (D), the movable template (42) is driven to rotate to make hot water Flow out from the second hot water cavity (B) or the first hot water cavity (A);

The hot water delivery pipe (3) is divided into two paths, the first path is connected to the first hot water chamber (A) through the first hot water inlet valve (61), and the second path is connected to the first hot water chamber (A) through the second hot water inlet valve (62). ) Connect the second hot water chamber (B);

The first hot water cavity (A) and the second hot water cavity (B) are respectively connected to a first hot water outlet pipe (73) provided with a first hot water outlet valve (71), and a second hot water outlet The second hot water outlet pipe (74) of the valve (72);

The first cold water chamber (C) is connected with a first cold water inlet pipe (83) provided with a first cold water inlet valve (81) and a first cold water outlet pipe (93) provided with a first cold water outlet valve (91);

The second cold water chamber (D) is respectively connected to a second cold water inlet pipe (84) provided with a second cold water inlet valve (82) and a second cold water outlet pipe (94) provided with a second cold water outlet valve (93);

The first cold water inlet pipe (83) and the second cold water inlet pipe (84) are connected to municipal tap water;

The first cold water outlet pipe (93) and the second cold water outlet pipe (94) are connected to the water tank (2);

The intelligent solar water heater system also includes a controller for controlling the two-position three-way solenoid valve (5), the first hot water inlet valve (61), the second hot water inlet valve (62), and the second hot water inlet valve (62). A hot water outlet valve (71), a second hot water outlet valve (72), a first cold water inlet valve (81), a second cold water inlet valve (82), a first cold water outlet valve (91) and a second Cold water outlet valve (93).
The intelligent solar water heater system according to claim 1, characterized in that: the two-position three-way solenoid valve (5) has two state positions: in the first state position, the two-position three-way solenoid valve (5) The water inlet is connected to the water outlet, and the air inlet is closed; in the second state, the water inlet of the two-position three-way solenoid valve (5) is closed, and the air inlet is connected to the water outlet.
The intelligent solar water heater system according to claim 1, wherein the first hot water outlet pipe (73) and the second hot water outlet pipe (74) are connected to the kitchen water supply pipe (11) and the bathroom after confluence. Water supply pipe (12).
The intelligent solar water heater system according to claim 1, characterized in that: the hot water delivery pipe (3) is wrapped with an insulation layer, the solar heat collection tube (1) is a vacuum heat collection tube; the solar heat collection tube (1) and the water tank (2) are fixed on the roof of the building through the bracket (10).
The intelligent solar water heater system according to claim 1, characterized in that: the heat preservation barrel (4) is located indoors; the first hot water cavity (A) and the second hot water cavity (A) of the heat preservation barrel (4) B) There is an electric heater inside.
The intelligent solar water heater system according to claim 1, characterized in that: the heat preservation barrel (4) is provided with a position sensor for detecting the rotation angle of the movable template (42).
The control method of the intelligent solar water heater system according to claim 1, characterized in that: when the user uses water, the water heater is switched between mode I and mode II,

Mode I: Open the first cold water inlet valve (81), the second cold water outlet valve (92), the first hot water outlet valve (71) and the second hot water inlet valve (62), and close the first cold water outlet valve (91), the second cold water inlet valve (82), the first hot water inlet valve (61) and the second hot water outlet valve (72); tap water enters the first cold water cavity through the first cold water inlet pipe (83) (C) Make the volume larger, drive the movable template (42) to rotate counterclockwise, the first hot water chamber (A) and the second cold water chamber (D) are squeezed by the movable template (42) and the volume becomes smaller, so that the The hot water in a hot water cavity (A) flows out through the first hot water outlet pipe (73) for users to use, while the cold water in the second cold water cavity (D) flows into the water tank (2) through the second cold water outlet pipe (94). ), to realize the water heater replenishment at the same time as the user water;

Mode II: Open the second cold water inlet valve (82), the first cold water outlet valve (91), the second hot water outlet valve (72) and the first hot water inlet valve (61), and close the second cold water outlet valve (92), the first cold water inlet valve (81), the second hot water inlet valve (62) and the first hot water outlet valve (71); tap water enters the second cold water cavity through the second cold water inlet pipe (84) (D) Make the volume larger, drive the movable template (42) to rotate clockwise, the second hot water chamber (B) and the first cold water chamber (C) are squeezed by the movable template (42) and the volume becomes smaller, so that the first The hot water in the second hot water cavity (B) flows out through the second hot water outlet pipe (74) for users to use, while the cold water in the first cold water cavity (C) flows into the water tank (2) through the first cold water outlet pipe (93) ), to realize the water heater replenishment at the same time that the user uses water.
The control method of the intelligent solar water heater system according to claim 7, characterized in that: when the solar water heater is in mode I, the two-position three-way solenoid valve (5) is controlled to operate so that the water inlet and the water outlet are connected, and the water tank ( 2) The hot water in the heat transfer pipe (3) and the second hot water inlet valve (62) replenish hot water to the second hot water chamber (B); when the solar water heater is in mode II, control the two-position three-way solenoid The valve (5) operates to make the water inlet and the water outlet communicate, and the hot water in the water tank (2) passes through the hot water pipe (3) and the first hot water inlet valve (61) to the second hot water chamber (A). ) Replenish hot water.
The control method of the intelligent solar water heater system according to claim 7, characterized in that: when the movable template (42) rotates to the limit position, switching between mode I and mode II is performed.
The control method of the intelligent solar water heater system according to claim 7, characterized in that: the rotation angle of the movable template (42) is detected by a position sensor.