A hot water supply system with adjustable on / off water supply mode

Abstract

This utility model discloses a hot water supply system with an adjustable on / off water supply mode, comprising: a heat source, a first port, a hot water tank, a variable frequency pressurization device, a second port, and a third port; the heat source is connected to the first port via a hot water supply pipeline, and a first valve is also provided on the hot water supply pipeline, located close to the first port; a water supply branch is connected to the hot water tank on the hot water supply pipeline, and a second valve is provided on the water supply branch; the hot water tank is connected to the first port via the variable frequency pressurization device, and a third valve is provided between the hot water tank and the variable frequency pressurization device; a fourth valve is provided between the variable frequency pressurization device and the first port; the second port is connected to the inlet pipe of the heat source via a hot water return pipe; the third port is connected to the inlet pipe of the heat source via a domestic water supply pipeline. This application achieves the switching of the hot water supply system mode by controlling the opening and closing of valves, solving the problem of the limited applicability of a single system.

Description

Technical Field

[0001] This utility model belongs to the field of building water supply and drainage technology, and in particular relates to a hot water supply system with an adjustable on / off water supply mode. Background Technology

[0002] Currently, there are two main types of hot water supply systems: open hot water supply systems and closed hot water supply systems.

[0003] An open hot water supply system is directly connected to the atmosphere and typically uses an open water tank, relying on gravity or booster pumps for water supply. Advantages of this system include: 1. High stability: The water tank's buffering effect can handle short-term peak water usage. 2. Simple maintenance: Simple structure and low failure rate. Disadvantages include: Water quality risk: Exposed water tanks may breed bacteria or introduce impurities.

[0004] A closed-loop hot water supply system is completely sealed, maintaining system pressure through a water pump or municipal water pressure. The entire system is equipped with an expansion tank or safety valve. The advantages of this system type are: the sealed environment reduces the risk of contamination. The disadvantages are: when users have concentrated and large volumes of hot water, the heating equipment needs to be matched to the highest hot water demand, resulting in a higher initial investment for the system.

[0005] For buildings where hot water usage fluctuates significantly with the seasons, an open hot water supply system can be problematic. During the off-season, when water usage is low, the hot water stored in the tank loses a lot of heat, and the slow turnover of hot water may lead to bacterial growth.

[0006] Currently, there are no special designs for hot water systems in buildings where water consumption fluctuates significantly with the seasons; a single system is typically used. When the budget is ample, a closed-loop, storage-type hot water supply system that meets the maximum hourly heat consumption is chosen. When the budget is moderate, a heat source plus a hot water storage tank based on the average hourly heat consumption is selected. If a closed-loop system is chosen, the initial investment is higher; some equipment stops operating during the off-season, requiring regular maintenance. Utility Model Content

[0007] The purpose of this utility model is to overcome the problems of the prior art and disclose a hot water supply system with an adjustable on / off water supply mode. The hot water supply system of this application realizes the switching of the hot water supply system mode by controlling the opening and closing of the valve, thereby solving the problem of the limited applicability of a single system.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A hot water supply system with an adjustable on / off water supply mode, the hot water supply system comprising: a heat source, a first port, a hot water tank, a frequency converter pressurizing device, a second port, and a third port;

[0010] The heat source is connected to the first port via a hot water supply pipeline. The first port is connected to the user's hot water network. A first valve is also provided on the hot water supply pipeline, and the first valve is located close to the first port.

[0011] The hot water supply pipeline has a water supply branch connected to the hot water tank. A second valve is provided on the water supply branch. The hot water tank is connected to the first port via a frequency converter pressurization device. A third valve is provided between the hot water tank and the frequency converter pressurization device. A fourth valve is provided between the frequency converter pressurization device and the first port.

[0012] The second port is connected to the inlet pipe of the heat source via a hot water return pipe, and an outdoor hot water return main is connected to the second port.

[0013] The third port is connected to the inlet pipe of the heat source via a domestic water supply pipeline, and an outdoor domestic water supply pipe is connected to the third port.

[0014] According to a preferred embodiment, a sixth valve, a second temperature detector, an expansion tank, and a return water drive unit are sequentially provided on the hot water return pipeline from the second port to the heat source.

[0015] According to a preferred embodiment, the return water drive unit consists of two parallelly arranged first and second return water pumps.

[0016] According to a preferred embodiment, the bottom of the hot water tank is provided with a first return water pipe connected between a sixth valve and a second temperature detector on the hot water return water pipe; and the return water pipe is provided with a seventh valve.

[0017] According to a preferred embodiment, the hot water tank is further connected via a second return water pipe between a second port on the hot water return water pipe and a sixth valve; and a fifth valve is provided on the second return water pipe.

[0018] According to a preferred embodiment, when the second valve, third valve, fourth valve, fifth valve, and seventh valve are in the closed state, and the first valve and sixth valve are in the open state, the hot water supply system is a closed hot water supply system.

[0019] According to a preferred embodiment, when the second valve, third valve, fourth valve, fifth valve, and seventh valve are in the open state, and the first valve and sixth valve are in the closed state, the hot water supply system is an open hot water supply system.

[0020] According to a preferred embodiment, the hot water tank is equipped with a first temperature sensor.

[0021] According to a preferred embodiment, the heat source consists of a plurality of water heaters arranged in parallel.

[0022] According to a preferred embodiment, each water heater in the heat source is a storage-type gas water heater.

[0023] The aforementioned main solution of this utility model and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted by this utility model and for which protection is sought. Those skilled in the art, after understanding the solution of this utility model, will realize, based on existing technology and common knowledge, that there are many combinations, all of which are technical solutions to be protected by this utility model; therefore, they are not exhaustively listed here.

[0024] The beneficial effects of this utility model are:

[0025] Seasonal changes lead to fluctuations in hot water consumption. This application's hot water system allows for switching between different hot water system types via valves. Compared to traditional open systems, it reduces the size of the water tank, saving floor space. The tank can be shut off when hot water consumption is low, reducing water pollution and heat waste caused by tank dissipation. During seasons with high hot water consumption, the tank can be filled in advance via a heat source before peak usage.

[0026] Compared to traditional closed systems, this reduces the number of water heaters, lowers initial investment, and even allows the hot water tank and water heaters to provide hot water simultaneously during peak water usage periods. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the principle structure of the hot water supply system of this utility model;

[0028] Among them, 1-heat source, 2-first valve, 3-first port, 4-second valve, 5-hot water tank, 6-first temperature detector, 7-third valve, 8-variable frequency pressurization equipment, 9-fourth valve, 10-fifth valve, 11-sixth valve, 12-second temperature detector, 13-expansion tank, 14-first return water pump, 15-second return water pump, 16-seventh valve, 17-second port, 18-third port. Detailed Implementation

[0029] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Furthermore, it should be noted that unless otherwise specified, the specific structures, connections, positions, power sources, etc. involved in this utility model are all things that a person skilled in the art can know without creative effort based on the prior art.

[0035] Example 1

[0036] refer to Figure 1 As shown in the figure, a hot water supply system with an adjustable on / off water supply mode is illustrated. The hot water supply system includes: a heat source 1, a first port 3, a hot water tank 5, a variable frequency pressurization device 8, a second port 17, and a third port 18.

[0037] Heat source 1 is connected to the first port 3 via a hot water supply pipeline. The first port 3 is connected to the user's hot water network, and a first valve 2 is also installed on the hot water supply pipeline, located close to the first port 3. Thus, the heat source 1 heats the process water medium to provide hot water to the user's hot water network.

[0038] Preferably, the heat source 1 consists of several water heaters arranged in parallel. Each water heater in the heat source 1 is a storage-type gas water heater.

[0039] A water supply branch is provided on the hot water supply pipeline and connected to the hot water tank 5. A second valve 4 is provided on the water supply branch to provide hot water storage for the hot water tank 5. A first temperature detector 6 is provided inside the hot water tank 5 to monitor the water temperature inside the hot water tank 5.

[0040] The hot water tank 5 is connected to the first port 3 via the frequency converter pressurization device 8, and a third valve 7 is provided between the hot water tank 5 and the frequency converter pressurization device 8, and a fourth valve 9 is provided between the frequency converter pressurization device 8 and the first port 3.

[0041] The second port 17 is connected to the inlet pipe of the heat source 1 via the hot water return pipe, and an outdoor hot water return main pipe is connected to the second port 17.

[0042] Preferably, a sixth valve 11, a second temperature detector 12, an expansion tank 13, and a return water drive unit are sequentially provided on the hot water return pipe from the second port 17 to the heat source 1.

[0043] Furthermore, the water return drive unit comprises two parallel water return pumps, a first water return pump 14 and a second water return pump 15. This dual-pump structure achieves redundancy between the pump bodies, ensuring the water return function.

[0044] Preferably, the bottom of the hot water tank 5 is provided with a first return water pipe connected between the sixth valve 11 and the second temperature detector 12 on the hot water return water pipe; and the return water pipe is provided with a seventh valve 16.

[0045] Preferably, the hot water tank 5 is also connected to the second port 17 and the sixth valve 11 of the hot water return pipe via a second return water pipe; and a fifth valve 10 is provided on the second return water pipe.

[0046] The third port 18 is connected to the inlet pipe of the heat source 1 via a domestic water supply pipeline, and an outdoor domestic water supply pipe is connected to the third port 18.

[0047] Preferably, when the second valve 4, the third valve 7, the fourth valve 9, the fifth valve 10, and the seventh valve 16 are in the closed state, and the first valve 2 and the sixth valve 11 are in the open state, the hot water supply system is a closed-loop hot water supply system. In this case, the hot water is directly heated by the gas water heater from the outdoor water supply pipe and then delivered to the user to meet the needs when the hot water consumption is small.

[0048] Furthermore, when the hot water supply system is a closed hot water supply system, the start and stop of the return water drive unit is controlled by the temperature value of the second temperature detector 12 located at the end of the hot water return pipe.

[0049] Preferably, when the second valve 4, the third valve 7, the fourth valve 9, the fifth valve 10, and the seventh valve 16 are in the open state, and the first valve 2 and the sixth valve 11 are in the closed state, the hot water supply system is an open hot water supply system. In this case, the variable frequency pressurization device 8 directly draws hot water from the hot water tank 5 to supply the user, and the gas water heater is only used to replenish the hot water tank 5 to meet the demand when the hot water consumption is high.

[0050] Furthermore, when the hot water supply system is an open hot water supply system, the start and stop of the return water drive unit is controlled by the temperature value of the first temperature sensor 6 installed inside the hot water tank 5.

[0051] To address the seasonal fluctuations in hot water consumption, this application presents a hot water system that can be switched via valves. Compared to traditional open systems, this reduces the size of the water tank, saving floor space. The tank can be closed during periods of low hot water demand, reducing water contamination and heat waste caused by tank dissipation. During peak hot water seasons, the tank can be filled in advance using a heat source. Compared to traditional closed systems, this reduces the number of water heaters required, lowering initial investment. It also allows for simultaneous hot water supply from both the tank and water heaters during peak periods.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hot water supply system with an adjustable on / off water supply mode, characterized in that, The hot water supply system includes: a heat source (1), a first port (3), a hot water tank (5), a variable frequency pressurization device (8), a second port (17), and a third port (18); The heat source (1) is connected to the first port (3) via a hot water supply pipeline. The first port (3) is connected to the user's hot water network. A first valve (2) is also provided on the hot water supply pipeline. The first valve (2) is located close to the first port (3). The hot water supply pipeline is provided with a water supply branch connected to the hot water tank (5). A second valve (4) is provided on the water supply branch. The hot water tank (5) is connected to the first port (3) via a frequency converter (8). A third valve (7) is provided between the hot water tank (5) and the frequency converter (8). A fourth valve (9) is provided between the frequency converter (8) and the first port (3). The second port (17) is connected to the inlet pipe of the heat source (1) via the hot water return pipe, and the second port (17) is connected to an outdoor hot water return main pipe. The third port (18) is connected to the inlet pipe of the heat source (1) via a domestic water supply pipeline, and an outdoor domestic water supply pipe is connected to the third port (18).

2. The hot water supply system as described in claim 1, characterized in that, A sixth valve (11), a second temperature detector (12), an expansion tank (13) and a return water drive unit are sequentially installed on the hot water return pipeline from the second port (17) to the heat source (1).

3. The hot water supply system as described in claim 2, characterized in that, The return water drive unit consists of two parallel sets of a first return water pump (14) and a second return water pump (15).

4. The hot water supply system as described in claim 2, characterized in that, The bottom of the hot water tank (5) is provided with a first return water pipe connected between the sixth valve (11) and the second temperature detector (12) on the hot water return water pipe; and the return water pipe is provided with a seventh valve (16).

5. The hot water supply system as described in claim 4, characterized in that, The hot water tank (5) is also connected to the second port (17) of the hot water return pipe and the sixth valve (11) via the second return pipe; and the second return pipe is provided with a fifth valve (10).

6. The hot water supply system as described in claim 5, characterized in that, When the second valve (4), the third valve (7), the fourth valve (9), the fifth valve (10), and the seventh valve (16) are closed, and the first valve (2) and the sixth valve (11) are open, the hot water supply system is a closed hot water supply system.

7. The hot water supply system as described in claim 5, characterized in that, When the second valve (4), the third valve (7), the fourth valve (9), the fifth valve (10), and the seventh valve (16) are in the open state, and the first valve (2) and the sixth valve (11) are in the closed state, the hot water supply system is an open hot water supply system.

8. The hot water supply system as described in claim 1, characterized in that, The hot water tank (5) is equipped with a first temperature detector (6).

9. The hot water supply system as described in claim 1, characterized in that, The heat source (1) consists of several water heaters arranged in parallel.

10. The hot water supply system as described in claim 8, characterized in that, Each water heater in the heat source (1) is a storage-type gas water heater.

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