Heating water and domestic hot water integrated heating device

Abstract

The application provides a heating water and domestic hot water integrated heating device, and relates to the technical field of unified heating and hot water supply in buildings. The device comprises an indoor heating pipeline unit, a domestic hot water insulation box and at least one hot water heating unit. The hot water heating unit comprises a first hot water unit and a second hot water unit. The first hot water unit is connected with the water inlet and outlet pipelines of the indoor heating pipeline unit. The second hot water unit provides tap water pressure domestic hot water for the domestic hot water insulation box through a water supply pipeline. The heating water pipelines of the first hot water unit and the second hot water unit are isolated from each other. The application has the beneficial effects that the tap water is provided for the building heating system and the domestic hot water system in the instant heating device, the heating and domestic hot water are integrated, the energy utilization rate is improved, and the equipment cost and the related maintenance cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of unified heating and hot water supply technology in buildings, and particularly to an integrated heating device for heating hot water and domestic hot water. Background Technology

[0002] In existing building energy systems, heating hot water / steam and domestic hot water are typically supplied by separate equipment. Traditional heating systems rely on gas-fired boilers, with many buildings supplied with heating hot water or steam through long, large-diameter heating pipes from a single boiler room. Once inside the building, the heating hot water is then distributed to each household through tiered heating pipes. Domestic hot water is supplied by each household using its own gas or electric water heater. This often necessitates re-laying domestic hot water pipes during renovations, while the existing heating hot water pipes must be maintained during renovations. This increases the amount of redundant construction work significantly, and the large heat loss during the journey of supplying heating hot water from a single boiler room through long, large-diameter pipes results in substantial heat loss. The existing separate heating and domestic hot water design has the following technical drawbacks: Low energy utilization: The heat sources of the two systems are independent of each other. The efficiency of gas-fired or coal-fired boilers is low. Even gas-fired boilers with higher thermal efficiency usually have a thermal efficiency of less than 90%, resulting in a large amount of energy waste.

[0003] 2. Equipment Redundancy and High Costs: Two independent sets of equipment occupy a large space, resulting in high initial investment and maintenance costs. These costs are also borne by the homebuyers. The gas boiler, hot water storage tank, and circulation pipelines all need to be included in the building area, leading to generally high shared public infrastructure costs for homebuyers.

[0004] Chinese Patent Publication CN202852185U discloses an internally heated faucet, specifically an energy-saving and highly efficient instant electric heating water pipe, comprising a faucet and a heating device. The heating device is disposed inside the faucet, characterized in that it is a quartz tube with an electric heating film covering its inner wall, and electrodes are provided on the electric heating film. This internally heated faucet utilizes the excellent properties of quartz tubes, such as high temperature resistance, corrosion resistance, extremely low coefficient of thermal expansion, and good electrical insulation. Furthermore, the electric heating film covering the inner wall of the quartz tube allows for effective heat absorption, resulting in significantly higher thermal efficiency than common heating devices that cover the outside of the quartz tube with an electric heating film. Simultaneously, this structure effectively prevents the heat emitted by the electric heating film from damaging other internal components of the faucet, effectively increasing the faucet's service life.

[0005] Chinese Patent Publication CN218895531U discloses an electrically heated water pipe based on a carbon fiber heating film, comprising a water pipe with a heating layer on its outer wall. Power cords are connected to both ends of the heating layer, and a thermostat is connected to the other end of each power cord. A plug is connected to the other end of the thermostat. The heated water pipe designed in this application features rapid heating, low energy consumption, and adjustable temperature. During use, the temperature can be adjusted according to the degree of freezing of the water pipe. Furthermore, the overall structure is reasonably designed, easy to operate, and safe.

[0006] my country's power generation has reached the world's highest level, and the Yarlung Tsangpo Grand Hydropower Station and various green energy sources are still developing rapidly. Further utilizing coal or natural gas to generate electricity directly from oil and gas fields or mines, and supplying this electricity to newly built urban and rural buildings to produce hot water, while uniformly laying heating and hot water pipes within the buildings according to actual needs, would inevitably reduce energy consumption and lower building costs. How to provide an integrated energy-saving heating device for both heating and domestic hot water is a pressing technical problem that needs to be solved. Summary of the Invention

[0007] This invention provides an integrated heating device for both heating hot water and domestic hot water, the integrated heating device comprising: an indoor heating pipe unit, a domestic hot water insulation tank, and at least one hot water heating unit; The hot water heating unit includes a first hot water unit and a second hot water unit connected to the building's tap water pipes; The first hot water unit of the hot water heating unit is connected to the inlet and outlet pipes of the indoor heating pipe unit, and a heating circulation pump is installed in the inlet section of the building indoor heating system. The second hot water unit of the hot water heating unit provides domestic hot water with tap water pressure to the domestic hot water insulation tank through a water supply pipe; The heating water circuits of the first hot water unit and the second hot water unit inside the hot water heating unit are isolated from each other.

[0008] Preferably, the first hot water unit and the second hot water unit of the hot water heating unit each include a set of non-metallic heating water pipes; Each set of non-metallic heating water pipes includes at least one non-metallic heating water pipe; the non-metallic heating water pipe includes an electric heating film, and the interior of the non-metallic heating water pipe through the tap water pipe is insulated from the mains power. The electric heating film of the non-metallic heating water pipe is connected to the mains power supply, and the mains power supply is used as the heating energy for the tap water inside the non-metallic heating water pipe.

[0009] Preferably, the water circuits of at least two non-metallic heating water pipes in each group are connected in parallel or in series, and the electric heating films of each non-metallic heating water pipe in each group are connected in parallel in sequence.

[0010] Preferably, the tap water inlet is connected to the first water inlet channel and the second water inlet channel of the hot water heating unit, respectively; The first water inlet channel is connected to the first hot water unit via the first one-way valve, and the second water inlet channel is connected to the second hot water unit; The first check valve only allows water from the tap water inlet to flow into the first hot water unit.

[0011] Preferably, the outlet of the first hot water unit of the hot water heating unit is connected in sequence to the heating buffer insulation water tank, the heating valve, and the second one-way valve, which is connected to the inlet of the heating circulation pump. The heating circulation pump pumps the hot water into the inlet of the indoor heating pipe unit. At least one first water temperature detector and one first pressure detector are provided on the first hot water unit of the hot water heating unit; The outlet of the indoor heating pipe unit is connected to the water pump unit, which pumps the tailwater of the building's indoor heating system back into the first hot water unit of the hot water heating unit.

[0012] Preferably, the buffer insulated water tank is equipped with a second water temperature detector, a second pressure detector, an automatic pressure relief valve, and an automatic air vent valve; The second one-way valve only allows hot water for heating to flow from the buffer insulated water tank to the building's indoor heating system.

[0013] Preferably, the second hot water unit of the hot water heating unit heats the input tap water and outputs it to the domestic hot water insulation tank; The second hot water unit is equipped with a third water temperature detector; A fourth water temperature detector is installed on the domestic hot water insulation tank.

[0014] Preferably, the integrated heating device further includes a control device, which is connected to a first water temperature sensor, a second water temperature sensor, a third water temperature sensor, a first pressure sensor, and a second pressure sensor; the control device controls the heating temperature of the first hot water unit and the second hot water unit based on the temperature signals from each temperature sensor; the control device controls the hot water pressure in the first hot water unit and the heating buffer insulation water tank based on the pressure signals from each pressure sensor.

[0015] Preferably, a first water pressure gauge is installed at the tap water inlet; a second water pressure gauge is installed at the inlet of the indoor heating pipe unit. The integrated heating device includes a control device, which outputs control to start or stop the water pump unit and the heating circulation pump based on the pressure data from the first and second water pressure gauges.

[0016] Preferably, the non-metallic heating water pipe is any of the following types: quartz heating water pipe, high-density crystal heating water pipe.

[0017] Compared with the prior art, the integrated heating device for heating and domestic hot water provided by the present invention has the following advantages: by supplying tap water to the building heating system and the domestic hot water unit separately in the instant heating device, the integrated heating of heating and domestic hot water improves energy utilization and reduces equipment costs and related maintenance expenses; by setting a first one-way valve at the tap water inlet and the building heating system, the hot water of the building heating system is prevented from being lost from the tap water inlet, and tap water is used to simultaneously supply water to the building indoor heating system and the domestic hot water unit for water source replenishment.

[0018] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the non-metallic hot water heating pipe structure used in this invention.

[0020] The components include: 1. Indoor heating pipe unit; 2. Domestic hot water insulation tank; 3. Water pump unit; 4. Tap water inlet; 5. Hot water heating unit; 6. Heating buffer insulation tank; 7. Heating circulation pump; 8. First check valve; 9. Second check valve; 10. Heating valve; 11. Heating return water pipe; 12. Domestic hot water valve; 13. Heating pipe; 14. Mains power cord; 15. Heating layer; Detailed Implementation

[0021] The purpose of this invention is to provide an integrated independent heating and domestic hot water supply device installed inside buildings. Unlike existing unified heating methods that involve large-scale laying of hot water supply pipelines, this invention uses electric heating to supply domestic hot water within the building, and the overall size of the heating device is significantly smaller than that of unified heating methods. The construction unit only provides the domestic tap water input, and this integrated independent heating and domestic hot water supply device can provide the building with winter heating and year-round domestic hot water supply. The domestic hot water refers to the water used for bathing, cooking, and other domestic water requiring heating by the building's residents. This invention improves energy efficiency and reduces equipment costs and related maintenance expenses by integrating the heating of heating and domestic hot water. It also greatly reduces the difficulties of cross-laying pipes during home renovations, lowering residential maintenance costs.

[0022] To further illustrate the technical means and effects of the present invention in order to achieve the intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0023] Example 1

[0024] like Figure 1 The diagram shown is a structural schematic of an integrated heating device for both heating hot water and domestic hot water according to the present invention.

[0025] This invention provides an integrated heating device for both heating hot water and domestic hot water, comprising: an indoor heating pipe unit 1, a domestic hot water insulation tank 2, and at least one hot water heating unit 5; The hot water heating unit 5 includes a first hot water unit and a second hot water unit connected to the building's tap water pipes; The first hot water unit of the hot water heating unit 5 is connected to the inlet and outlet pipes of the indoor heating pipe unit 1, and a heating circulation pump is installed in the inlet section of the building indoor heating system 1. The second hot water unit of the hot water heating unit 5 provides domestic hot water with tap water pressure to the domestic hot water insulation tank 2 through the water supply pipe; The heating water paths of the first hot water unit and the second hot water unit inside the hot water heating unit 5 are isolated from each other.

[0026] As attached Figure 1 As shown, the water connection between the building's tap water inlet 4 and the hot water heating unit 5 includes: a first water inlet channel and a second water inlet channel. The second water inlet channel is directly connected to the second hot water unit of the hot water heating unit 5. Tap water is heated to the required temperature for domestic hot water by a set of non-metallic electric heating tubes 13 of the second hot water unit and directly input into the domestic hot water insulation tank 2. The tank 2 is insulated to maintain the domestic hot water temperature. The output pipeline of the domestic hot water insulation tank 2 is laid to various rooms in the building where domestic hot water is needed, and users can obtain domestic hot water by opening valve 12. The domestic hot water terminal includes: a hot water distribution assembly and a water terminal. The hot water distribution assembly includes pipes and valves connecting different water terminals. The water terminal includes: at least a shower head and at least one faucet.

[0027] The first water inlet channel enters the first hot water unit of the hot water heating unit 5 through the first one-way valve 8. The first one-way valve 8 only allows tap water to enter the first hot water unit and does not allow the heating hot water in the first hot water unit to flow back into the tap water end. The purpose of setting the first one-way valve 8 is to ensure that the heating system is a closed-loop system. In this closed-loop system, the hot water from the first hot water unit directly enters the heating buffer insulation water tank 6. The outlet of the heating buffer insulation water tank 6 enters the heating circulation pump through the second one-way valve 9 and the heating valve 10, and the heating hot water temperature is maintained by the heating buffer insulation water tank 6. The second one-way valve 9 only allows the heating circulation pump 7 to pump hot water from the heating buffer insulation water tank 6 into the building's indoor heating pipes. The heating valve 10 is closed during the non-heating season and is only opened during the heating season. The tailwater of the heating system 1 returns to the first hot water unit through the water pump unit 3. Under normal circumstances, the water temperature of the heating system is much higher than that of domestic hot water, which inevitably leads to the evaporation and consumption of heating water. When the control system detects that the water volume of the heating system is insufficient and the water pressure drops, it activates the first one-way valve 8 to replenish the heating water from the tap water pipe, thus restoring the water pressure and volume of the heating system.

[0028] Under normal heating conditions, since the heating system is a closed-loop system, the first hot water unit only needs to be heated to the required heating temperature by the mains power supply during the start-up period. Normally, the first hot water unit only needs to heat the return water to the set supply water temperature, with a temperature difference of approximately 5-15℃. This invention provides an integrated energy-saving heating device for both heating and domestic hot water. One such device can be installed in a building or even on a single floor. This reduces energy waste associated with the construction and maintenance of centralized heating main pipelines and the heating of circulating hot water, which accounts for over 50% of the main heating network between buildings, significantly reducing energy consumption.

[0029] Appendix Figure 1 The invention provides a set of hot water heating unit 5; users can accurately budget the actual needs based on the specific building area, heating and domestic hot water usage, and install the integrated heating device for heating and domestic hot water of the present invention. By adding one or more sets of hot water heating units 5, sufficient heating and domestic hot water can be provided for buildings with large building areas.

[0030] Preferably, the first hot water unit and the second hot water unit of the hot water heating unit 5 each include a set of non-metallic heating water pipes; Each set of non-metallic heating water pipes includes at least one non-metallic heating water pipe; the non-metallic heating water pipe includes an electric heating film, and the interior of the non-metallic heating water pipe through the tap water pipe is insulated from the mains power. The electric heating film of the non-metallic heating water pipe is connected to the mains power supply, and the mains power supply is used as the heating energy for the tap water inside the non-metallic heating water pipe.

[0031] Preferably, the water circuits of at least two non-metallic heating water pipes in each group are connected in parallel or in series, and the electric heating films of each non-metallic heating water pipe in each group are connected in parallel in sequence.

[0032] The non-metallic heating tube used in this invention has an electroplated heating film on its outer surface. When heated by electricity, the internal insulation properties of the non-metallic tube maintain the absolute safety of domestic water. Preferably, the non-metallic heating water tube is any of the following types: quartz heating water tube, high-density crystal heating water tube.

[0033] As attached Figure 2 As shown, non-metallic heating water pipes commonly use quartz heating tubes 13 with an externally deposited resistance film. Their inner walls are smooth and do not easily accumulate scale. Adding a filter and descaling agent essentially eliminates scale formation. Because quartz / silica is a highly insulating material, heating and domestic water supply are very safe even when using mains electricity as the heating power source. The quartz heating tube 13 has an externally deposited resistance film 15. Depending on the required water volume and temperature, a single heating tube 13 may not be sufficient; multiple heating tubes 13 can be connected in parallel in the water circuit to provide adequate water volume and temperature. To simplify the circuit structure, the externally deposited resistance film 15 of the quartz heating tubes 13 can be connected in series or in parallel. (See attached image.) Figure 1 The diagram shows a parallel-connected resistive film 15 deposited on the outer surface of the quartz heating tube 13, while the water circuit is connected in series.

[0034] Preferably, the tap water inlet 4 is connected to the first water inlet channel and the second water inlet channel of the hot water heating unit 5 respectively; The first water inlet channel is connected to the first hot water unit via the first one-way valve 8, and the second water inlet channel is connected to the second hot water unit. The first one-way valve 8 only allows water from the tap water inlet 4 to flow into the first hot water unit.

[0035] Preferably, the outlet of the first hot water unit of the hot water heating unit 5 is connected in sequence to the heating buffer insulation water tank 6, the heating valve 10, and the second one-way valve 9, which are then connected to the inlet of the heating circulation pump 7. The heating circulation pump 7 pumps the hot water into the inlet of the indoor heating pipe unit 1. At least one first water temperature detector and one first pressure detector are provided on the first hot water unit of the hot water heating unit 5; The outlet of the indoor heating pipe unit 1 is connected to the water pump unit 3, and the water pump unit 3 pumps the tailwater of the building indoor heating system 1 back into the first hot water unit of the hot water heating unit 5.

[0036] The heating buffer insulation water tank 6 is equipped with an automatic pressure relief valve 16 and an automatic air vent valve 17. The automatic pressure relief valve 16 and the automatic air vent valve 17 are used to control the internal pressure of the heating buffer insulation water tank 6, and protect the heating system from excessive internal pressure that could cause damage or leakage.

[0037] Preferably, the heating buffer insulation water tank 6 is equipped with a second water temperature detector, a second pressure detector, an automatic pressure relief valve, and an automatic air vent valve; The second one-way valve 9 only allows hot water for heating to flow from the heating buffer insulation tank 6 to the building indoor heating system 1.

[0038] Preferably, the second hot water unit of the hot water heating unit 5 heats the input tap water and outputs it to the domestic hot water insulation tank (2). The second hot water unit is equipped with a third water temperature detector; A fourth water temperature detector is installed on the domestic hot water insulation box (2).

[0039] Preferably, the integrated heating device further includes a control device, which is connected to a first water temperature sensor, a second water temperature sensor 12, a third water temperature sensor 13, a first pressure sensor, and a second pressure sensor; the control device controls the heating temperature of the first hot water unit and the second hot water unit based on the temperature signals from each temperature sensor; the control device controls the hot water pressure in the first hot water unit and the heating buffer insulation water tank 6 based on the pressure signals from each pressure sensor.

[0040] Preferably, a first water pressure gauge is installed at the tap water inlet 4; and a second water pressure gauge is installed at the inlet of the indoor heating pipe unit 1. The integrated heating device includes a control device, which outputs control on the start or stop of the water pump unit (3) and the heating circulation pump (7) based on the pressure data of the first water pressure gauge and the second water pressure gauge.

[0041] Preferably, the non-metallic heating water pipe is any of the following types: quartz heating water pipe, high-density crystal heating water pipe.

[0042] Heating water is heated by multiple instant heating pipes, while domestic water is heated by one or more instant heating pipes. The heating water system is a closed-loop system. The heated hot water flows through radiators, underfloor heating pipes, fan coil units, and other terminal radiators before returning to the heating hot water heating module inside the instant heating device 5 for further heating. Unless the heating pipes are damaged, almost no water is consumed. Domestic hot water is an open system. When a user turns on the tap of the domestic water system, the incoming tap water is instantly heated to the set temperature by the domestic hot water heating module. After use, the water is discharged directly into the building's sewer system as domestic wastewater.

[0043] The building indoor heating system 1 includes a filter for filtering impurities in the pipes and protecting the pipes and equipment from blockage.

[0044] The heat dissipation terminal is a radiator.

[0045] In the appendix Figure 1 In the middle, the tap water input at inlet 4 is divided into two water inlet channels: the first water inlet channel and the second water inlet channel. (See attached diagram) Figure 1 The second water inlet channel, connected to the domestic hot water unit 2, enters the hot water heating unit 5 via a heating pipe. This pipe is the second hot water unit. After the tap water is heated in the second hot water unit, the hot water enters the domestic hot water unit 2. This second hot water unit basically maintains the water pressure of the inlet tap water. The so-called normal pressure hot water refers to the water pressure of the tap water in the urban water supply system. This second hot water unit is completely separate and isolated from the first hot water unit, and will not be contaminated or interfered with by the heating hot water. The requirement for domestic water is cleanliness and hygiene. The first hot water unit itself requires that the pipes can only withstand the temperature of domestic hot water, such as 40-70℃, typically around 50-55℃, but the pipes must not easily corrode to ensure a long-term safe supply of domestic water.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated heating device for both heating hot water and domestic hot water, characterized in that: The integrated heating device includes: an indoor heating pipe unit (1), a domestic hot water insulation tank (2), and at least one hot water heating unit (5). The hot water heating unit (5) includes a first hot water unit and a second hot water unit connected to the building's tap water pipe; The first hot water unit of the hot water heating unit (5) is connected to the inlet and outlet pipes of the indoor heating pipe unit (1), and a heating circulation pump is installed in the inlet section of the building indoor heating system (1). The second hot water unit of the hot water heating unit (5) provides domestic hot water at tap water pressure to the domestic hot water insulation box (2) through the water supply pipe; The heating water paths of the first hot water unit and the second hot water unit inside the hot water heating unit (5) are isolated from each other.

2. The heating device according to claim 1, characterized in that: The hot water heating unit (5) includes a set of non-metallic heating water pipes in its first hot water unit and second hot water unit. Each set of non-metallic heating water pipes includes at least one non-metallic heating water pipe; the non-metallic heating water pipe includes an electric heating film, and the interior of the non-metallic heating water pipe through the tap water pipe is insulated from the mains power. The electric heating film of the non-metallic heating water pipe is connected to the mains power supply, and the mains power supply is used as the heating energy for the tap water inside the non-metallic heating water pipe.

3. The heating device according to claim 2, characterized in that: The water circuits of at least two non-metallic heating water pipes in each group are connected in parallel or in series, and the electric heating films of each non-metallic heating water pipe in each group are connected in parallel in sequence.

4. The heating device according to claim 1, characterized in that: The tap water inlet (4) is connected to the first water inlet channel and the second water inlet channel of the hot water heating unit (5) respectively; The first water inlet channel is connected to the first hot water unit via the first one-way valve (8), and the second water inlet channel is connected to the second hot water unit; The first one-way valve (8) only allows water from the tap water inlet (4) to flow into the first hot water unit.

5. The heating device according to claim 4, characterized in that: The outlet of the first hot water unit of the hot water heating unit (5) is connected in sequence to the heating buffer insulation water tank (6), the heating valve (10), and the second one-way valve (9), which is connected to the inlet of the heating circulation pump (7). The heating circulation pump (7) pumps the hot water into the inlet of the indoor heating pipe unit (1). At least one first water temperature detector and one first pressure detector are provided on the first hot water unit of the hot water heating unit (5); The outlet of the indoor heating pipe unit (1) is connected to the water pump unit (3), and the water pump unit (3) pumps the tailwater of the building indoor heating system (1) back into the first hot water unit of the hot water heating unit (5).

6. The heating device according to claim 5, characterized in that: The buffer insulated water tank (6) is equipped with a second water temperature detector, a second pressure detector, an automatic pressure relief valve and an automatic air vent valve; The second one-way valve (9) only allows heating hot water to flow from the buffer insulated water tank (6) to the building indoor heating system (1).

7. The heating device according to claim 6, characterized in that: The second hot water unit of the hot water heating unit (5) heats the input tap water and outputs it to the domestic hot water insulation tank (2); The second hot water unit is equipped with a third water temperature detector; A fourth water temperature detector is installed on the domestic hot water insulated box (2).

8. The heating device according to claim 7, characterized in that: The integrated heating device also includes a control device, which is connected to a first water temperature sensor, a second water temperature sensor, a third water temperature sensor, a first pressure sensor, and a second pressure sensor. The control device controls the heating temperature of the first hot water unit and the second hot water unit based on the temperature signals from each temperature sensor. The control device controls the hot water pressure in the first hot water unit and the heating buffer insulation water tank (6) based on the pressure signals from each pressure sensor.

9. The heating device according to claim 4, characterized in that: A first water pressure gauge is installed at the tap water inlet (4); a second water pressure gauge is installed at the inlet of the indoor heating pipe unit (1); The integrated heating device includes a control device, which outputs control on the start or stop of the water pump unit (3) and the heating circulation pump (7) based on the pressure data of the first water pressure gauge and the second water pressure gauge.

10. The heating device according to claim 2, characterized in that: The non-metallic heating water pipe is any of the following types: quartz heating water pipe, high-density crystal heating water pipe.

Images