Concentrated domestic hot water supply system using gas water heater

Abstract

The utility model relates to the technical field of hot water supply, and discloses a centralized domestic hot water supply system using a gas water heater, which comprises the gas water heater, a first pipeline and a second pipeline are arranged at the bottom of the gas water heater, and a cold water pipeline is fixedly connected to the middle of the second pipeline. A cold water pipeline is fixedly connected to the bottom end of the second pipeline, a first electromagnetic valve is fixedly connected to the end, close to the second pipeline, of the cold water pipeline, a heat preservation water tank is fixedly connected to the right side of the second pipeline, and a water level detector is fixedly connected to the top end of an inner cavity of the heat preservation water tank; a temperature sensor is arranged at the bottom of an inner cavity of the heat preservation water tank. A user does not need to wait for residual water flow when using hot water, time waste is avoided, water resources are saved, and the situation that when the user turns off the hot water very small, the gas water heater cannot be started, and the bathing experience is affected by cold water in the bathing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water supply, and more specifically, to a centralized domestic hot water supply system using a gas water heater. Background Art

[0002] Traditionally, household gas water heaters are installed in the bathrooms of student dormitories. Due to the particularity of gas water heaters (no water return) and the particularity of student dormitory bathrooms (one gas water heater with multiple shower points), the following problems may arise during use:

[0003] 1. After a shower terminal is used, some water will remain in the pipe. If no user uses it for a period of time, the temperature of the remaining water in the pipe will drop. When a user uses it, the remaining water in the pipe often needs to be drained before hot water can be used. Draining the remaining water requires a certain amount of time until hot water appears in the pipe before it can be used. This wastes water and heat, and the user also wastes time while waiting for the remaining water to flow out and become hot water.

[0004] 2. When users want to save hot water, they turn down the hot water very low, causing the gas water heater to stop and be unable to start during use. Cold water appears during the bathing process, seriously affecting the user's bathing experience. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a centralized domestic hot water supply system using a gas water heater, which has the advantages of meeting the user's hot water needs while maximizing energy-saving benefits.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a centralized domestic hot water supply system using a gas water heater, comprising a gas water heater, a first pipeline and a second pipeline are arranged at the bottom of the gas water heater, the middle of the second pipeline is fixedly connected to a cold water pipeline, the bottom end of the second pipeline is fixedly connected to a cold water pipeline, the end of the cold water pipeline close to the second pipeline is fixedly connected to a first solenoid valve, the right side of the second pipeline is fixedly connected to an insulated water tank, the top of the inner cavity of the insulated water tank is fixedly connected to a water level detector, the bottom of the inner cavity of the insulated water tank is provided with a temperature sensor, the bottom of the insulated water tank is provided with a fourth pipeline, the connection between the fourth pipeline and the insulated water tank is fixedly connected to a water supply pump, and the bottom of the fourth pipeline is provided with a spray pipe.

[0007] As a preferred technical solution of the present invention, a placement bin is fixedly connected to the middle of the cold water pipeline, and a filter box is fixedly connected to the inner cavity of the placement bin.

[0008] As a preferred technical solution of the present invention, a second solenoid valve is fixedly connected to the connection between the thermal insulation water tank and the second pipeline, and the thermal insulation water tank is a hollow body.

[0009] As a preferred technical solution of the present invention, the gas water heater is connected to the inner cavity of the thermal insulation water tank through a first pipeline, and the gas water heater is connected to the bottom of the thermal insulation water tank through a second pipeline.

[0010] As an optimal technical solution of the present invention, the bottom end of the fourth pipeline is fixedly connected to a third solenoid valve, and the upper and lower ends of the fourth pipeline are fixedly connected to the upper and lower ends of the insulated water tank respectively.

[0011] As a preferred technical solution of the present invention, a handle is fixedly connected to the front side of the filter box, and a connector is fixedly connected to one end of the cold water pipeline close to the placement compartment.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The utility model closes the first solenoid valve and opens the second solenoid valve when the temperature of the insulated water tank detected by the temperature sensor in the insulated water tank is lower than the set value, and the water heater circulation pump starts to pump water from the insulated water tank, and the water enters the gas water heater through the second pipe to be heated, and the heated water returns to the inner cavity of the insulated water tank along the first pipe until the temperature of the insulated water tank reaches the set temperature, the water heater circulation pump is closed, the gas water heater cannot detect the water flow and stops working, thereby realizing that the user does not have to wait for the residual water flow when using hot water, avoiding wasting time and saving water resources. It also avoids the situation that the user turns off the hot water for a long time, causing the gas water heater to fail to start, resulting in cold water affecting the bathing experience during the bathing process.

[0014] 2. The utility model allows water from an external source to enter the cold water pipeline, and then filters the impurities in the external water source through the filter box. After long-term use, the staff will pull the filter box out of the inner cavity of the placement bin and replace the filter box, thereby preventing impurities in the external water source from accumulating in the inner cavity of the second pipeline and the cold water pipeline to cause scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection of the thermal insulation water tank structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection of the spray pipe structure of the utility model;

[0018] Figure 4This is a schematic diagram of the connection of the water level detector structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the connection of the structure placement bin of the utility model.

[0020] In the figure: 1. Gas water heater; 2. First pipeline; 3. Second pipeline; 4. Water heater circulation pump; 5. First solenoid valve; 6. Insulated water tank; 7. Water level detector; 8. Temperature sensor; 9. Water supply pump; 10. Cold water pipeline; 11. Fourth pipeline; 12. Storage bin; 13. Filter box; 14. Second solenoid valve; 15. Spray pipe; 16. Third solenoid valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. 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] like Figures 1 to 5 As shown, the utility model provides a centralized domestic hot water supply system using a gas water heater, comprising a gas water heater 1, a first pipeline 2 and a second pipeline 3 are provided at the bottom of the gas water heater 1, a cold water pipeline 10 is fixedly connected to the middle of the second pipeline 3, the bottom end of the second pipeline 3 is fixedly connected to the cold water pipeline 10, an end of the cold water pipeline 10 close to the second pipeline 3 is fixedly connected to a first solenoid valve 5, an insulated water tank 6 is fixedly connected to the right side of the second pipeline 3, a water level detector 7 is fixedly connected to the top of the inner cavity of the insulated water tank 6, a temperature sensor 8 is provided at the bottom of the inner cavity of the insulated water tank 6, a fourth pipeline 11 is provided at the bottom of the insulated water tank 6, a water supply pump 9 is fixedly connected to the connection between the fourth pipeline 11 and the insulated water tank 6, and a spray pipe 15 is provided at the bottom of the fourth pipeline 11;

[0023] Hot water is stored in the insulated water tank 6. When the user uses the water, the hot water in the inner cavity of the insulated water tank 6 is used through the spray pipe 15. When the water level detector 7 in the insulated water tank 6 detects that the water level is lower than the set water level, the first solenoid valve 5 opens, and cold water flows into the cold water pipe 10. At the same time, the water heater circulation pump 4 starts to pump water from the cold water pipe 10 and enters the gas water heater 1 through the second pipe 3. The gas water heater 1 detects the water flow and ignites it to heat it, and then transports hot water to the insulated water tank 6 through the first pipe 2. When the water level detector 7 detects that the water level has reached the set water level, water production stops.

[0024] When the temperature of the insulated water tank 6 detected by the temperature sensor 8 in the insulated water tank 6 is lower than the set value, the first solenoid valve 5 is closed, the second solenoid valve 14 is opened, and the water heater circulation pump 4 is started to pump water from the insulated water tank 6. The water enters the gas water heater 1 through the second pipe 3 for heating, and the heated water returns to the inner cavity of the insulated water tank 6 along the first pipe 2 until the temperature of the insulated water tank 6 reaches the set temperature. The water heater circulation pump 4 is turned off, and the gas water heater 1 cannot detect the water flow and stops working, thereby realizing that the user does not have to wait for residual water flow when using hot water, avoiding wasting time and saving water resources. It also avoids the user turning off the hot water for a long time, causing the gas water heater 1 to fail to start, resulting in cold water appearing during bathing and affecting the bathing experience.

[0025] The middle of the cold water pipe 10 is fixedly connected to a storage bin 12, and the inner cavity of the storage bin 12 is fixedly connected to a filter box 13;

[0026] Water enters from the cold water pipe 10 through an external water source, and then impurities in the external water source are filtered through the filter box 13. After long-term use, the staff pulls the filter box 13 out of the inner cavity of the placement bin 12 and replaces the filter box 13, thereby preventing impurities in the external water source from accumulating in the inner cavity of the second pipe 3 and the cold water pipe 10 and causing scale to form.

[0027] The second solenoid valve 14 is fixedly connected to the connection between the heat preservation water tank 6 and the second pipeline 3, and the heat preservation water tank 6 is a hollow body;

[0028] Through the second solenoid valve 14 at the connection between the insulated water tank 6 and the second pipeline 3, when the water heater circulation pump 4 enters the interior of the gas water heater 1 from the cold water pipeline 10 for heating, the cold water can be blocked by the second solenoid valve 14 to prevent the cold water from entering the inner cavity of the insulated water tank 6.

[0029] The gas water heater 1 is connected to the inner cavity of the thermal insulation water tank 6 through the first pipe 2, and the gas water heater 1 is connected to the bottom of the thermal insulation water tank 6 through the second pipe 3;

[0030] The gas water heater 1 is connected to the inner cavity of the insulated water tank 6 through the first pipe 2, so that the water heated inside the gas water heater 1 can enter the inner cavity of the insulated water tank 6 along the first pipe 2 for insulation storage, and then the gas water heater 1 is connected to the bottom of the insulated water tank 6 through the second pipe 3, so that the water in the inner cavity of the insulated water tank 6 can return to the inner cavity of the gas water heater 1 along the second pipe 3 for heating after cooling.

[0031] Among them, the bottom end of the fourth pipeline 11 is fixedly connected to the third solenoid valve 16, and the upper and lower ends of the fourth pipeline 11 are respectively fixedly connected to the upper and lower ends of the thermal insulation water tank 6;

[0032] The hot water in the inner cavity of the insulated water tank 6 is extracted by the water supply pump 9 and transported to the spray pipe 15 along the fourth pipeline 11, and the circulation of each spray pipe 15 can be controlled by the third solenoid valve 16. The settings of the spray pipe 15 shown in the figure are simplified. In actual use, the spray pipe 15 is located in a shower room or other place.

[0033] The front side of the filter box 13 is fixedly connected to a handle, and the end of the cold water pipe 10 close to the storage compartment 12 is fixedly connected to a connector;

[0034] The handle on the front side of the filter box 13 makes it convenient for the staff to pull the filter box 13 out of the inner cavity of the placement chamber 12 to replace the filter box 13, and then connect the external water source to the connector of the cold water pipe 10 through the connector, so that cold water enters the inner cavity of the cold water pipe 10.

[0035] The working principle and use process of the present invention are as follows: a water source is connected to the cold water pipe 10, and the water is filtered through the filter box 13. During long-term use, the staff can take out the filter box 13 from the inner cavity of the placement bin 12 to clean and replace the filter box 13. When the water level detector 7 in the insulated water tank 6 detects that the water level is lower than the set water level, the first solenoid valve 5 opens, and cold water flows into the cold water pipe 10. At the same time, the water heater circulation pump 4 starts to pump water from the cold water pipe 10 and enters the gas water heater 1 through the second pipe 3. The gas water heater 1 detects the water flow and heats it by ignition, and delivers hot water to the insulated water tank 6 through the first pipe 2. When the water level detector 7 detects that the water level reaches the set water level, water production is stopped.

[0036] When the user uses the water, the water supply pump 9 circulates the hot water in the insulated water tank 6 through the fourth pipe 11 to the water supply network, ensuring that the temperature of the hot water in the fourth pipe 11 is always maintained at the set value. The user opens the faucet of the spray pipe 15 to discharge hot water;

[0037] When the temperature of the insulated water tank 6 detected by the temperature sensor 8 in the insulated water tank 6 is lower than the set value, the first solenoid valve 5 is closed, the second solenoid valve 14 is opened, and the water heater circulation pump 4 is started to pump water from the insulated water tank 6. The water enters the gas water heater 1 through the second pipeline 3 for heating, and the heated water returns to the inner cavity of the insulated water tank 6 along the first pipeline 2 until the temperature of the insulated water tank 6 reaches the set temperature. The water heater circulation pump 4 is turned off, the gas water heater 1 cannot detect the water flow, and stops working.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centralized domestic hot water supply system using a gas water heater, comprising a gas water heater (1), characterized in that: The bottom of the gas water heater (1) is provided with a first pipeline (2) and a second pipeline (3); the middle of the second pipeline (3) is fixedly connected to a cold water pipeline (10); the bottom end of the second pipeline (3) is fixedly connected to the cold water pipeline (10); the end of the cold water pipeline (10) close to the second pipeline (3) is fixedly connected to a first solenoid valve (5); the right side of the second pipeline (3) is fixedly connected to an insulated water tank (6); the top end of the inner cavity of the insulated water tank (6) is fixedly connected to a water level detector (7); the bottom of the inner cavity of the insulated water tank (6) is provided with a temperature sensor (8); the bottom of the insulated water tank (6) is provided with a fourth pipeline (11); the connection between the fourth pipeline (11) and the insulated water tank (6) is fixedly connected to a water supply pump (9); and the bottom of the fourth pipeline (11) is provided with a spray pipe (15).

2. A centralized domestic hot water supply system using a gas water heater according to claim 1, characterized in that: A storage bin (12) is fixedly connected to the middle of the cold water pipeline (10), and a filter box (13) is fixedly connected to the inner cavity of the storage bin (12).

3. A centralized domestic hot water supply system using a gas water heater according to claim 1, characterized in that: A second solenoid valve (14) is fixedly connected to the connection between the thermal insulation water tank (6) and the second pipeline (3), and the thermal insulation water tank (6) is a hollow body.

4. A centralized domestic hot water supply system using a gas water heater according to claim 1, characterized in that: The gas water heater (1) is connected to the inner cavity of the thermal insulation water tank (6) through the first pipeline (2), and the gas water heater (1) is connected to the bottom of the thermal insulation water tank (6) through the second pipeline (3).

5. A centralized domestic hot water supply system using a gas water heater according to claim 1, characterized in that: The bottom end of the fourth pipeline (11) is fixedly connected to a third solenoid valve (16), and the upper and lower ends of the fourth pipeline (11) are respectively fixedly connected to the upper and lower ends of the thermal insulation water tank (6).

6. A centralized domestic hot water supply system using a gas water heater according to claim 2, characterized in that: A handle is fixedly connected to the front side of the filter box (13), and a connector is fixedly connected to one end of the cold water pipe (10) close to the placement compartment (12).

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