Intelligent control multi-capability complementary coupling heating system in severe cold climate

Abstract

The utility model relates to the technical field of heating equipment, concretely is severe cold climate intelligent control multi -energy complementary coupling heating system, include: heat storage water tank, heat storage water tank is equipped with at least two groups of heat exchange coil, and heat exchange coil connects different heat source, water source heat pump, water source heat pump primary side is connected with heat storage water tank, heat storage water tank can directly connect heating end, the utility model discloses, through the integration of at least two groups of staggered arrangement heat exchange coil in the water tank, has realized the direct coupling and complementation of multiple heat sources in the same heat storage unit on the hardware structure, has improved the energy comprehensive utilization efficiency greatly. Through setting up water source heat pump and straight through bypass parallel with water tank main pipe, make the system can according to water temperature flexible selection " high -efficient direct supply " or " waste heat upgrading " two kinds of operation mode, guaranteeing the continuous stable heat supply under the severe cold climate, significantly reduce the waste of low -grade heat, realize the heating purpose of high -efficient, stable, energy -conserving.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, specifically to a multi-energy complementary coupling heating system for severe cold climates. Background Technology

[0002] In frigid regions, especially in high-latitude areas such as Northwest and Northeast my country, the long winter heating season, high heat load, and complex and variable climate conditions pose severe challenges to the stability and energy efficiency of heating systems. Northwest my country, with its vast territory and geographical isolation, has isolated buildings such as toll stations, research bases, remote outposts, and rural buildings in remote areas. These buildings, far from the main power grid and lacking supporting facilities, have long relied on traditional fossil fuels for energy. They not only face the problem of unstable energy supply due to winter snowstorms, but also bear the high costs of energy transportation and serious environmental pollution consequences.

[0003] For locations with such heating needs, traditional energy sources such as electricity are typically used. Even when using multiple renewable energy sources such as solar and air source heat pumps, existing technological solutions involve each heat source device being installed and operated independently. Because different systems are suited to different climatic conditions, the appropriate heat source is usually switched during suitable operating zones to ensure building heating. However, heat sources in non-operating zones still have unused heat, resulting in heat waste. Furthermore, air source heat pumps and solar energy are significantly affected by environmental factors, leading to large fluctuations in heating performance. They generally require supplemental electricity or other traditional energy sources, resulting in higher energy consumption. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a smart multi-energy complementary coupling heating system for severe cold climates.

[0005] The technical solution of this utility model is: The intelligent multi-energy complementary coupling heating system for frigid climates includes: A hot water storage tank, the hot water storage tank including a tank body, the tank body being provided with at least two sets of independent heat exchange coils, the heat exchange coils being used to connect to different external heat sources; A water source heat pump, wherein its primary side inlet is connected to the main heating pipe of the hot water storage tank, and its primary side outlet is connected to the main return pipe of the hot water storage tank; A bypass pipeline is connected in parallel between the primary and secondary sides of the water source heat pump.

[0006] Preferably, the heat exchange coil includes at least a first heat exchange coil and a second heat exchange coil.

[0007] Preferably, the heat source includes at least an air source heat pump and a solar collector, which are respectively connected to a first heat exchange coil and a second heat exchange coil.

[0008] Preferably, the air source heat pump is selectively connected to a plate heat exchanger via a first three-way valve group, and the secondary side of the plate heat exchanger is selectively connected to the primary side of the water source heat pump or an indoor terminal via a second three-way valve group.

[0009] Preferably, the air source heat pump and the first heat exchange coil are provided with a first circulation pump, the solar collector and the second heat exchange coil are provided with a second circulation pump, and the water source heat pump is provided with a second network circulation pump at the primary side return port.

[0010] Preferably, the bypass pipeline includes a straight heating pipe connecting the secondary side outlet and the primary side inlet of the water source heat pump and a fifth three-way valve, as well as a straight return pipe connecting the secondary side return outlet and the primary side return outlet of the water source heat pump and a sixth three-way valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention integrates at least two sets of staggered heat exchange coils inside the water tank, achieving direct coupling and complementarity of multiple heat sources within the same heat storage unit, significantly improving overall energy utilization efficiency. By setting up a water source heat pump connected in parallel with the water tank's main pipe and a direct bypass, the system can flexibly select between "high-efficiency direct supply" and "waste heat upgrading" operating modes based on water temperature. This ensures continuous and stable heating in frigid climates while significantly reducing the waste of low-grade heat. It achieves the goal of efficient, stable, and energy-saving heating. Attached Figure Description

[0012] Figure 1 This is a first schematic diagram of the water tank structure in this utility model; Figure 2 This is a front view of the water tank structure in this utility model; Figure 3 This is a schematic cross-sectional view of the water tank structure in this utility model; Figure 4 This is a schematic diagram of the heat exchange coil structure in this utility model; Figure 5 This is a schematic diagram of the system principle of this utility model.

[0013] The meanings of the labels in the diagram are as follows: 1. Hot water storage tank; 101. Tank body; 102. First heat exchange coil; 103. Second heat exchange coil; 104. Water supply pipe; 105. Drain pipe; 106. Main heating pipe; 107. Main return water pipe; 2. Air source heat pump; 3. First circulation pump; 4. First three-way valve; 5. Second three-way valve; 6. Plate heat exchanger; 7. Solar collector; 8. Second circulation pump; 9. Water source heat pump; 10. Third three-way valve; 11. Fourth three-way valve; 13. Secondary network circulation pump; 14. Straight-through heating pipe; 15. Straight-through return water pipe; 16. Fifth three-way valve; 17. Sixth three-way valve. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1: Please see Figure 1-5 The present invention will describe the above technical solution in detail through the following embodiments: The intelligent multi-energy complementary coupling heating system for frigid climates includes: Hot water storage tank 1 includes a tank body 101, and at least two sets of independent heat exchange coils are provided inside the tank body 101. The heat exchange coils are used to connect to different external heat sources. In terms of ease of processing and sealing, cylindrical shape is preferred for housing 101.

[0016] The housing 101 should be equipped with at least a water supply pipe 104, a sewage pipe 105, a main heating pipe 106, and a main return water pipe 107.

[0017] The water supply pipe 104 is used to replenish the water lost during the heating process. The replenished water needs to be softened first. The drain pipe 105 is used to remove impurities generated after the water is repeatedly heated.

[0018] The water source heat pump 9 has its primary side inlet connected to the main heating pipe 106 of the hot water storage tank 1, and its primary side outlet connected to the main return pipe 107 of the hot water storage tank 1.

[0019] The working principle of the water source heat pump 9 is to use a small amount of electricity to absorb heat from the primary side water by evaporating the refrigerant, and then release the heat by compressing the refrigerant to heat the secondary side water, thereby achieving heat transfer.

[0020] When the external ambient temperature is low and the heat source is insufficient, the water temperature inside the housing 101 will be low, for example, below 35 degrees Celsius. The water source heat pump 9 can absorb heat from the hot water provided by the main heating pipe 106 to increase the heating temperature at the indoor terminal. Under this condition, the water on the primary and secondary sides of the water source heat pump 9 circulates separately and does not come into contact with each other.

[0021] A bypass pipeline is connected in parallel between the primary and secondary sides of the water source heat pump 9.

[0022] When the water temperature inside the tank 101 is high, such as above 45 degrees Celsius, direct heating can be used to save energy.

[0023] The bypass pipeline includes a straight heating pipe 14 connecting the secondary side outlet and the primary side inlet of the water source heat pump 9 and a fifth three-way valve 16, as well as a straight return pipe 15 connecting the secondary side return outlet and the primary side return outlet of the water source heat pump 9 and a sixth three-way valve 17.

[0024] When the hot water storage tank 1 directly supplies heating to the indoor terminal, the indoor terminal return water pipe is connected to the main return water pipe 107 through the straight return water pipe 15 and the sixth three-way valve 17, and the indoor terminal heating pipe is connected to the main heating pipe 106 through the straight heating pipe 14 and the fifth three-way valve 16.

[0025] By switching the operating states of the fifth three-way valve 16 and the sixth three-way valve 17, it is possible to select whether the water source heat pump 9 participates in heating.

[0026] In this embodiment, both the heat exchange coil and the heat source are set to two.

[0027] The heat exchange coil includes at least a first heat exchange coil 102 and a second heat exchange coil 103.

[0028] The first heat exchange coil 102 and the second heat exchange coil 103 can be U-shaped, spiral-shaped or other structures. In this embodiment, a U-shaped structure is used.

[0029] The first heat exchange coil 102 and the second heat exchange coil 103 are interlocked within the housing 101, which can improve space utilization and ensure heat exchange efficiency.

[0030] The main heating pipe 106 is located at the bottom side of the box 101, and the main return water pipe 107 is located in the lower middle part of the box 101, close to the heat exchange coil.

[0031] The heat source includes at least an air source heat pump 2 and a solar collector 7, which are connected to the first heat exchange coil 102 and the second heat exchange coil 103, respectively.

[0032] Air source heat pump 2 is used for heating when solar radiation intensity is low, on cloudy days, or at night.

[0033] Solar collector 7 is used for heating when solar radiation is strong.

[0034] The air source heat pump 2 and the first heat exchange coil 102 are equipped with a first circulation pump 3, and the solar collector 7 and the second heat exchange coil 103 are equipped with a second circulation pump 8.

[0035] Both the first circulation pump 3 and the second circulation pump 8 are used for the circulation of the heat exchange fluid. The heat exchange fluid flows in the pipes without directly contacting the water.

[0036] The air source heat pump 2 is optionally connected to a plate heat exchanger 6 via a first three-way valve group. The secondary side of the plate heat exchanger 6 is optionally connected to the primary side of the water source heat pump 9 or the indoor terminal via a second three-way valve group.

[0037] The first three-way valve group includes a first three-way valve 4 and a second three-way valve 5. The first three-way valve 4 is used to connect the primary side inlet of the plate heat exchanger 6, the liquid outlet of the air source heat pump 2, and the liquid inlet of the first heat exchange coil 102. The second three-way valve 5 is used to connect the primary side outlet of the plate heat exchanger 6, the return water outlet of the air source heat pump 2, and the water outlet of the first heat exchange coil 102.

[0038] The second three-way valve group includes a third three-way valve 10 and a fourth three-way valve 11. The third three-way valve 10 is used to connect the secondary side outlet of the plate heat exchanger 6, the main heating pipe 106, and the primary side inlet of the water source heat pump 9. The fourth three-way valve 11 is used to connect the secondary side return outlet of the plate heat exchanger 6, the main return pipe 107, and the primary side outlet of the water source heat pump 9.

[0039] When the air source heat pump 2 is highly efficient, the heat from the air source heat pump 2 can be directly supplied to the plate heat exchanger 6 using the first three-way valve 4 and the second three-way valve 5, and the plate heat exchanger 6 can then directly supply the heat to the water source heat pump 9. Furthermore, a bypass pipe can be used to isolate the water source heat pump 9, allowing the heat from the air source heat pump 2 to directly heat the indoor terminals.

[0040] When the plate heat exchanger 6 directly supplies heat to the water source heat pump 9, the connection between the water source heat pump 9 and the hot water storage tank 1 can be disconnected through the second three-way valve group.

[0041] When the hot water storage tank 1 supplies heat to the water source heat pump 9, the plate heat exchanger 6 can be disconnected through the second three-way valve group.

[0042] A secondary circulation pump 13 is installed at the primary side return water inlet of the water source heat pump 9.

[0043] Secondary circulation pump 13 is used for water circulation on the primary side of water source heat pump 9.

[0044] Working principle: When solar radiation is strong: The solar collector 7 heats the water in the hot water storage tank 1. The hot water storage tank 1 isolates the water source heat pump 9 through a bypass pipeline and directly provides heating to the indoor terminals.

[0045] When solar radiation is weak, but the ambient temperature is not too low: The air source heat pump 2 absorbs air energy, and the heat from the air source heat pump 2 can be directly supplied to the plate heat exchanger 6 through the first three-way valve 4 and the second three-way valve 5. The plate heat exchanger 6 isolates the water source heat pump 9 through the bypass pipeline and directly provides heating to the indoor terminal.

[0046] When both the solar collector 7 and the air source heat pump 2 have low efficiency: The solar collector 7 and the air source heat pump 2 heat the water in the hot water storage tank 1. The hot water storage tank 1 is connected to the water source heat pump 9 through the main heating pipe 106 and the main return water pipe 107. The water source heat pump 9 uses the waste heat in the hot water storage tank 1 to heat the water in the indoor terminal pipe network.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-energy complementary coupling heating system for severe cold climates, characterized in that: include: A hot water storage tank (1) includes a tank body (101), and the tank body (101) is provided with at least two sets of independent heat exchange coils, which are used to connect different external heat sources. The water source heat pump (9) has its primary side inlet connected to the main heating pipe (106) of the hot water storage tank (1), and its primary side outlet connected to the main return pipe (107) of the hot water storage tank (1). A bypass pipeline is connected in parallel between the primary and secondary sides of the water source heat pump (9).

2. The intelligent multi-energy complementary coupling heating system for severe cold climates as described in claim 1, characterized in that: The heat exchange coil includes at least a first heat exchange coil (102) and a second heat exchange coil (103).

3. The intelligent multi-energy complementary coupling heating system for severe cold climates as described in claim 2, characterized in that: The heat source includes at least an air source heat pump (2) and a solar collector (7), which are connected to the first heat exchange coil (102) and the second heat exchange coil (103), respectively.

4. The intelligent multi-energy complementary coupling heating system for severe cold climates as described in claim 3, characterized in that: The air source heat pump (2) is optionally connected to a plate heat exchanger (6) via a first three-way valve group. The secondary side of the plate heat exchanger (6) is optionally connected to the primary side of the water source heat pump (9) or the indoor terminal via a second three-way valve group.

5. The intelligent multi-energy complementary coupling heating system for severe cold climates as described in claim 3, characterized in that: The air source heat pump (2) and the first heat exchange coil (102) are equipped with a first circulation pump (3), the solar collector (7) and the second heat exchange coil (103) are equipped with a second circulation pump (8), and the water source heat pump (9) is equipped with a second network circulation pump (13) at the primary side return water port.

6. The intelligent multi-energy complementary coupling heating system for severe cold climates as described in claim 1, characterized in that: The bypass pipeline includes a straight heating pipe (14) connecting the secondary side outlet and the primary side inlet of the water source heat pump (9) and a fifth three-way valve (16), as well as a straight return pipe (15) connecting the secondary side return outlet and the primary side return outlet of the water source heat pump (9) and a sixth three-way valve (17).

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