Household hot water tank suitable for central heating

Abstract

The utility model relates to the technical field of heating water supply systems, in particular to a household hot water tank suitable for central heating, which comprises an auxiliary heater, a first temperature sensor and a heat exchange coil which are arranged in the hot water tank, the heat exchange coil comprises a coil inlet and a coil outlet, and the coil inlet is connected with a heating water supply pipeline. Hot water in the heating water supply pipeline comes from a central heating heat source, and indoor heating equipment is arranged between the heating water supply pipeline and the heating water return pipeline. The central heating heat source provides heat for indoor heating, hot water can be supplied to users at the same time, heat energy can be utilized to the maximum extent, indoor heating or hot water can be supplied to the users independently, and the problem that the central heating heat source, especially a solar heat source, is idle in non-heating seasons is solved. And meanwhile, the controller receives temperature data, analyzes the temperature data and feeds back a signal to control the electric valve to start and stop, and the temperature of hot water of a user is automatically controlled. The water temperature is automatically controlled, and the water use experience of the terminal is good.

Description

Technical Field

[0001] The utility model relates to the technical field of heating and water supply systems, in particular to a household hot water tank suitable for central heating. Background Art

[0002] In the existing heating system, users' hot water is not taken into account, but users solve the hot water problem through various water heaters. In the case of centralized heating, especially solar centralized heating, in the non-heating season, solar equipment is idle, solar energy cannot be used 24 hours a day throughout the year, the equipment is in a stopped state, and measures need to be taken to avoid overheating of the system. Central heating, especially solar centralized heating, has a low utilization rate and a single heating function. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a household hot water tank suitable for central heating, which can heat hot water according to demand while providing heating in the heating season; in the non-heating season, the heating shut-off valve is closed, and the central heating heat source only heats hot water but no longer provides heating.

[0004] The technical problem to be solved by the utility model is achieved through the following technical scheme: a household hot water tank suitable for centralized heating, wherein the hot water tank is provided with an auxiliary heater, a first temperature sensor and a heat exchange coil, the heat exchange coil comprises a coil inlet and a coil outlet, the coil inlet is connected with a heating water supply pipeline, the hot water in the heating water supply pipeline comes from a centralized heating heat source, a first heating shut-off valve is provided on the heating water supply pipeline, an inlet pipe is provided between the heating water supply pipeline upstream of the first heating shut-off valve and the coil inlet, an electric valve and a first hot water shut-off valve are provided on the inlet pipe, a second heating shut-off valve is provided on the heating return pipe, a return pipe is provided between the heating return pipe upstream of the second heating shut-off valve and the coil outlet, and a second hot water shut-off valve is provided on the return pipe; the centralized heating heat source provides heat for indoor heating, can supply hot water to users at the same time, maximizes the use of thermal energy, and can also supply indoor heating or user hot water separately, solving the problem of idleness of centralized heating heat sources, especially solar heat sources, in the non-heating season.

[0005] The first temperature sensor is connected to the electric valve in communication with a controller, and a set value T is preset in the controller. The first temperature sensor detects the water temperature T1 in the hot water tank and transmits it to the controller. The controller compares T1 with the set value T to determine the feedback information and control the start and stop of the electric valve. The controller receives the temperature data, analyzes it and then feeds back the signal to control the start and stop of the electric valve, automatically controlling the water temperature of the user's hot water.

[0006] As a further solution of the utility model, the first temperature sensor detects that the water temperature T1 in the hot water tank is lower than the set value T, the electric valve opens, the hot water in the heating water supply pipeline is supplied to the hot water tank, and the temperature in the hot water tank rises until the water temperature T1 in the hot water tank is equal to the set value T, and the electric valve closes; the first temperature sensor detects that the water temperature T1 in the hot water tank is higher than the set value T, the electric valve closes, and the hot water in the heating water supply pipeline stops supplying the hot water tank.

[0007] As a further solution of the utility model, a second temperature sensor is provided on the heating water supply pipe. The second temperature sensor detects the water temperature T2 in the heating water supply pipe and transmits it to the controller. The first temperature sensor detects the water temperature T1 in the hot water tank and first compares it with the set value T and then with the water temperature T2 in the heating water supply pipe to control the start and stop of the electric valve.

[0008] As a further solution of the utility model, the water temperature T1 in the hot water tank is less than the set value T, and the water temperature T1 in the hot water tank is less than the water temperature T2 in the heating water supply pipe, the electric valve is opened, and the hot water in the heating water supply pipe is supplied to the hot water tank, and the temperature in the hot water tank increases until the water temperature T1 in the hot water tank is equal to the set value T, and the electric valve is closed;

[0009] The water temperature T1 in the hot water tank is greater than the water temperature T2 in the heating water supply pipe, the electric valve is closed, and the hot water in the heating water supply pipe continues to be heated by the central heating heat source until the water temperature T2 in the heating water supply pipe is greater than the water temperature T1 in the hot water tank. The electric valve is opened, and the hot water in the heating water supply pipe is supplied to the hot water tank. The temperature in the hot water tank rises until the water temperature T1 in the hot water tank is equal to the set value T. The electric valve is closed and the auxiliary heater is started.

[0010] As a further solution of the utility model, the hot water tank and the heating water supply pipeline are both arranged indoors, and a water inlet is arranged on the top of the hot water tank, and the water inlet is connected to a tap water pipe;

[0011] The bottom of the hot water tank is connected to several domestic water supply pipes, which are equipped with water supply valves and end with faucets or showers. The heat energy in the heat exchange coil is transferred to the tap water in the hot water tank, and the heated tap water is supplied to domestic water, maximizing the utilization of heat energy. In addition, the heat energy of the heat source can also be utilized in the non-heating season.

[0012] As a further solution of the utility model, the auxiliary heater is an electric heater. The electric heater can independently heat and increase the temperature.

[0013] As a further solution of the utility model, the heat exchange coil is set as a large diameter copper coil. The large diameter copper coil reduces the resistance when using hot water and exchanges heat efficiently. It reduces the heat exchange time and avoids the impact on the heat and hydraulic balance of the heating system when the hot water is heated.

[0014] As a further solution of the utility model, an indoor heating device is arranged between the heating water supply pipeline and the heating return water pipeline. In the heating season, the heat energy of the heat source is supplied to the indoor heating device to heat the room.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a household hot water tank suitable for centralized heating, including an auxiliary heater, a first temperature sensor and a heat exchange coil arranged in the hot water tank, the heat exchange coil including a coil inlet and a coil outlet, the coil inlet is connected to a heating water supply pipeline, the hot water in the heating water supply pipeline comes from a centralized heating heat source, and an indoor heating device is arranged between the heating water supply pipeline and the heating return water pipeline. The centralized heating heat source provides heat for indoor heating, and can also supply hot water to users at the same time to maximize the use of heat energy, or can supply indoor heating or hot water to users separately, solving the problem of idle centralized heating heat sources, especially solar heat sources, in the non-heating season.

[0017] At the same time, the controller receives temperature data, analyzes it, and then feeds back a signal to control the start and stop of the electric valve, automatically controlling the water temperature of the user's hot water. Automatic water temperature control is achieved, and the terminal water experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The system principle of the utility model Figure 1 ;

[0019] Figure 2 The system principle of the utility model Figure 2 .

[0020] Among them: 1- indoor heating equipment, 2- heating water supply pipeline, 201- the first heating shut-off valve, 3- heating return pipeline, 301- the second heating shut-off valve, 4- controller, 5- hot water tank, 501- the first temperature sensor, 6- heat exchange coil, 7- water inlet pipe, 701- electric valve, 702- the first hot water shut-off valve, 8- return pipe, 801- the second hot water shut-off valve, 9- domestic water supply pipe, 901- faucet, 10- the second temperature sensor, 11- an auxiliary heater is provided inside. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below through embodiments and in combination with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. Example

[0024] like Figure 1 to Figure 2 As shown, a household hot water tank suitable for central heating, the hot water tank 5 and the heating water supply pipeline 2 are both arranged indoors, a water inlet is provided on the top of the hot water tank, and the water inlet is connected to a tap water pipe; the tap water comes from the municipal tap water and meets the domestic water standard.

[0025] The hot water tank 5 is provided with an auxiliary heater 11, a first temperature sensor 501 and a heat exchange coil 6, and the heat exchange coil is a large-diameter copper coil. The large-diameter copper coil reduces the resistance when hot water is used, and can achieve a heat exchange effect in a short time. When the hot water is heated, it will not affect the heat and hydraulic balance of the heating system.

[0026] The heat exchange coil includes a coil inlet and a coil outlet. The coil inlet is connected to a heating water supply pipeline 2. The hot water in the heating water supply pipeline comes from a central heating heat source. The central heating heat source can be a solar heat source or other heat sources.

[0027] A first heating shutoff valve 201 is provided on the heating water supply pipeline 2, a water inlet pipe 7 is provided between the heating water supply pipeline upstream of the first heating shutoff valve and the coil inlet, an electric valve and a first hot water shutoff valve 702 are provided on the water inlet pipe, a second heating shutoff valve 301 is provided on the heating return water pipeline 3, a return water pipe 8 is provided between the heating return water pipeline upstream of the second heating shutoff valve 301 and the coil outlet, and a second hot water shutoff valve 801 is provided on the return water pipe;

[0028] When it is not in the heating season, the first heating shut-off valve 201 and the second heating shut-off valve 301 are closed, and the hot water in the central heating heat source is heat-exchanged through the heat exchange coil to heat and store the water in the water tank.

[0029] The first temperature sensor 501 is connected to the electric valve in communication with the controller 4, and a set value T is preset in the controller. The first temperature sensor detects the water temperature T1 in the hot water tank and transmits it to the controller. The controller compares T1 with the set value T to determine the feedback information and control the start and stop of the electric valve 701. The controller 4 controls the start and stop of the electric valve to automatically control the water temperature of the user's hot water.

[0030] The first temperature sensor 501 detects that the water temperature T1 in the hot water tank is less than the set value T, which is the manually set water temperature value. When the water temperature is set to 37°C, and the water temperature T1 in the hot water tank is less than 37°C, the electric valve opens, and the hot water in the heating water supply pipeline is supplied to the hot water tank. The temperature in the hot water tank rises until the water temperature T1 in the hot water tank equals the set value T. When it reaches 37°C, the electric valve closes;

[0031] The first temperature sensor 501 detects that the water temperature T1 in the hot water tank is greater than the set value T, the electric valve is closed, and the hot water in the heating water supply pipeline stops supplying the hot water tank.

[0032] The bottom of the hot water tank is connected with several domestic water supply pipes 9, on which water supply valves are arranged, and the end of the domestic water supply pipes is a faucet 901 or a shower. When the water temperature T1 in the hot water tank reaches the set value T, the faucet or shower is turned on for use. Example

[0033] A second temperature sensor 10 is provided on the heating water supply pipe. The second temperature sensor detects the water temperature T2 in the heating water supply pipe and transmits it to the controller 4. The first temperature sensor detects the water temperature T1 in the hot water tank and compares it with the set value T first, and then compares it with the water temperature T2 in the heating water supply pipe to control the start and stop of the electric valve.

[0034] The water temperature T1 in the hot water tank is less than the set value T, and the water temperature T1 in the hot water tank is less than the water temperature T2 in the heating water supply pipe. The electric valve is opened, and the hot water in the heating water supply pipeline is supplied to the hot water tank. The temperature in the hot water tank rises until the water temperature T1 in the hot water tank is equal to the set value T, and the electric valve is closed; the faucet or shower can be opened, and the hot water in the hot water tank is used along the faucet or shower. Example

[0035] When the water temperature T1 in the hot water tank is greater than the water temperature T2 in the heating water supply pipe, the electric valve is closed, and the hot water in the heating water supply pipe continues to be heated by the central heating heat source until the water temperature T2 in the heating water supply pipe is greater than the water temperature T1 in the hot water tank. The electric valve is opened, and the hot water in the heating water supply pipe is supplied to the hot water tank. The temperature in the hot water tank rises until the water temperature T1 in the hot water tank is equal to the set value T. The electric valve is closed, and the auxiliary heater is started. The auxiliary heater 11 is an electric heater, which can heat and raise the temperature independently. Example

[0036] An indoor heating device 1 is provided between the heating water supply pipeline 2 and the heating return water pipeline 3. During the heating season, the first heating shutoff valve 201 and the second heating shutoff valve 301 are opened, and a portion of the hot water in the central heating heat source enters the indoor heating device along the heating water supply pipeline, and the heat is transferred to the indoor air through the indoor heating device, the indoor temperature rises, and the cooled hot water circulates along the heating return water pipeline back to the central heating heat source for reheating.

[0037] Another part of the hot water in the central heating heat source can be transported to the heat exchange coil to exchange heat with the tap water in the hot water tank, so that the tap water in the hot water tank is heated and stored for use as domestic water.

[0038] Central heating heat sources provide heat for indoor heating and hot water for users, maximizing the use of thermal energy. They can also provide indoor heating or hot water for users separately, solving the problem of idle central heating heat sources, especially solar heat sources, in the non-heating season.

[0039] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A household hot water tank suitable for central heating, characterized in that: The hot water tank (5) is provided with an auxiliary heater (11), a first temperature sensor (501) and a heat exchange coil (6); the heat exchange coil includes a coil inlet and a coil outlet; the coil inlet is connected to a heating water supply pipeline (2); the hot water in the heating water supply pipeline comes from a central heating heat source; a first heating shut-off valve (201) is provided on the heating water supply pipeline; an inlet pipe (7) is provided between the heating water supply pipeline upstream of the first heating shut-off valve and the coil inlet; an electric valve (701) and a first hot water shut-off valve (702) are provided on the inlet pipe; a second heating shut-off valve (301) is provided on the heating return water pipeline (3); a return water pipe (8) is provided between the heating return water pipeline upstream of the second heating shut-off valve and the coil outlet; a second hot water shut-off valve (801) is provided on the return water pipe; The first temperature sensor (501) is connected to the electric valve (701) in communication with a controller (4), a set value T is preset in the controller, the first temperature sensor detects the water temperature T1 in the hot water tank and transmits it to the controller, the controller compares T1 with the set value T to determine feedback information, and controls the start and stop of the electric valve.

2. The household hot water tank suitable for central heating according to claim 1, characterized in that: When the first temperature sensor (501) detects that the water temperature T1 in the hot water tank is less than the set value T, the electric valve (701) opens, and the hot water in the heating water supply pipeline is supplied to the hot water tank (5), and the temperature in the hot water tank rises until the water temperature T1 in the hot water tank is equal to the set value T, and the electric valve closes; when the first temperature sensor detects that the water temperature T1 in the hot water tank is greater than the set value T, the electric valve closes, and the hot water in the heating water supply pipeline stops supplying the hot water tank.

3. The household hot water tank suitable for central heating according to claim 1, characterized in that: The heating water supply pipeline (2) is provided with a second temperature sensor (10), which detects the water temperature T2 in the heating water supply pipe and transmits it to the controller. The first temperature sensor detects the water temperature T1 in the hot water tank and compares it with the set value T first, and then compares it with the water temperature T2 in the heating water supply pipe to control the start and stop of the electric valve.

4. The household hot water tank suitable for central heating according to claim 1, characterized in that: The water temperature T1 in the hot water tank is less than the set value T, and the water temperature T1 in the hot water tank is less than the water temperature T2 in the heating water supply pipe, the electric valve (701) is opened, the hot water in the heating water supply pipe is supplied to the hot water tank (5), and the temperature in the hot water tank rises until the water temperature T1 in the hot water tank is equal to the set value T, and the electric valve is closed; When the water temperature T1 in the hot water tank (5) is greater than the water temperature T2 in the heating water supply pipe, the electric valve is closed, and the hot water in the heating water supply pipe continues to be heated by the central heating heat source until the water temperature T2 in the heating water supply pipe is greater than the water temperature T1 in the hot water tank. The electric valve is opened, and the hot water in the heating water supply pipe is supplied to the hot water tank (5). The temperature in the hot water tank rises until the water temperature T1 in the hot water tank is equal to the set value T. The electric valve is closed, and the auxiliary heater is started.

5. The household hot water tank suitable for central heating according to claim 1, characterized in that: The hot water tank (5) and the heating water supply pipeline (2) are both arranged indoors, and a water inlet is arranged on the top of the hot water tank, and the water inlet is connected to a tap water pipe; A plurality of domestic water supply pipes (9) are connected to the bottom of the hot water tank, and a water supply valve is provided on the domestic water supply pipe. The end of the domestic water supply pipe is a faucet (901) or a shower.

6. The household hot water tank suitable for central heating according to claim 1, characterized in that: The auxiliary heater (11) is an electric heater.

7. The household hot water tank suitable for central heating according to claim 1, characterized in that: The heat exchange coil (6) is configured as a large-diameter copper coil.

8. The household hot water tank suitable for central heating according to claim 1, characterized in that: An indoor heating device (1) is provided between the heating water supply pipeline and the heating water return pipeline.

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