CN115507403A - Heating device and control method thereof - Google Patents

Abstract

The invention discloses a heating device and a control method thereof, relates to the technical field of heating equipment, and solves the technical problems that in the prior art, solar energy and a single heat source heat pump are combined for heating, the efficiency of the heating device is obviously reduced in winter or the application of a water source heat pump is greatly limited. The heating device comprises a solar heat collection module, a heat storage water tank, a double-heat-source heat pump module and a tail end device, wherein a heating circulation loop is formed between the solar heat collection module and the heat storage water tank, and the heat storage water tank is connected with the tail end device to form a first heating loop; the double-heat-source heat pump module comprises a first heating component and a second heating component, wherein the first heating component is connected with the end equipment and forms a second heating loop; the heat storage water tank is connected with a second heating assembly, and the second heating assembly is connected with end equipment and forms a third heating loop. The heating device adopts a double-heat-source complementary heating mode, and can avoid the limitation of a single heat source.

Description

A heating device and its control method

technical field

The invention relates to the technical field of heating equipment, in particular to a heating device and a control method thereof.

Background technique

In northern China, it is very cold in winter, urban areas are equipped with municipal pipe networks, and rural areas mostly use small domestic boilers, and burning coal produces a lot of smoke, which is not good for the environment. In view of today's development status, solar-heat pump complementary heating can become a normal state in the future, and solar-heat pump complementary heating can effectively improve the operating efficiency of heat pumps in low-temperature environments in cold regions. The application of solar energy-heat pump complementary heating mode shows that it is feasible to apply multiple energy sources for complementary heating in cold regions; at the same time, it can effectively solve the current situation of high energy consumption and serious environmental pollution in the boiler heating system. In addition, the use of clean energy such as solar energy and air energy for heating has the characteristics of flexible layout and convenient construction.

The prior art discloses a solar energy cross-day and night indoor heating device, which includes: a solar heat collection module, a photovoltaic panel, a fan, a heat storage tank and an outdoor air duct, and the air is heated in the solar heat collection module and absorbed by the photovoltaic panel After the heat is generated, it passes through the heat storage tank from the outlet of the solar heat collection module, flows into the room through the air inlet, and then returns to the inlet of the solar heat collection module through the air return port. Compared with the existing technology, this technology breaks the traditional heating mode, and uses the selective absorption coating to absorb solar radiation energy to heat the air to heat the room. The heat storage tank can store surplus heat during the day, realize heating across the day and night and provide a small amount of domestic hot water. The device makes full use of solar energy, has the advantages of energy saving and environmental protection, low operating cost, high energy utilization rate, and can improve indoor air quality and comfort.

Another prior art discloses a solar air-conditioning heat source system, which integrates a solar water heating device and an air-source heat pump water heating device into the solar air-conditioning heat source system, and the solar water heating device converts solar energy into central The available heat source of the air-conditioning system bears the heat required by the air-conditioning system during the heating and humidification process during the day. The air-source heat pump water heater takes heat from the air through the heat pump, and provides the heat required for the heating and humidification of the air-conditioning system when the solar energy is insufficient. The system has the advantages of energy saving and environmental protection by utilizing renewable energy from solar energy and air energy.

The solar-heat pump complementary heating device includes a solar-air source heat pump combined heating device and a solar-water source heat pump combined heating device. However, the applicant found that the combination of solar energy and a single heat source heat pump for heating has the following disadvantages: if the combination of solar energy and air source heat pump is used for heating, the air source heat pump is prone to frost in winter when the temperature is low or the outdoor air is relatively humid. , so that the efficiency of the entire heating device is significantly reduced, and the heat capacity of the air is small. When you want to get the same amount of heat, you need a larger air volume; Restrictions and investment economics make the application of water source heat pumps have great limitations. Specifically, the location of the water source heat pump system must be close to the water source, and the extraction of water sources must overcome the limitations of the geographical structure of the water layer. At the same time, if the groundwater is excessive Mining without timely recharging will cause geological disasters and pose potential safety hazards.

Therefore, it is urgent to improve the existing combined heating device of solar energy and single heat source heat pump.

Contents of the invention

The purpose of the present invention is to propose a heating device and its control method, which solves the problem of combining solar energy and a single heat source heat pump for heating in the prior art, and the efficiency of the heating device is significantly reduced in winter or the application of the water source heat pump has relatively large limitations. technical problem. Many technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

To achieve the above object, the present invention provides the following technical solutions:

The heating device of the present invention includes a solar heat collection module, a hot water storage tank, a dual heat source heat pump module and terminal equipment, a heating cycle is formed between the solar heat collection module and the hot water storage tank, and the heat storage The water tank is connected to the terminal equipment and forms a first heating circuit; the dual heat source heat pump module includes a first heating assembly and a second heating assembly, wherein the first heating assembly is connected to the terminal equipment and forms a second heating circuit. A heating circuit; the hot water storage tank is connected to the second heating assembly, and the second heating assembly is connected to the terminal equipment to form a third heating circuit.

According to a preferred embodiment, the dual heat source heat pump module includes an air source evaporator, a water source evaporator, a compressor, a throttle valve and a condenser, wherein the air source evaporator is arranged in parallel with the water source evaporator; The air source evaporator, the compressor, the condenser, and the throttle valve are sequentially connected with the air source evaporator to form the first heating assembly; the water source evaporator, the compressor, The condenser, the throttle valve and the water source evaporator are sequentially connected to form the second heating assembly.

According to a preferred embodiment, the dual heat source heat pump module further includes a first control valve group, the first control valve group is arranged on the first heating assembly and the second heating assembly, and the first control The valve group is used to control the on-off state of the first heating assembly and the second heating assembly.

According to a preferred embodiment, the first control valve group includes a first three-way valve and a second three-way valve, wherein the three interfaces of the first three-way valve are respectively connected to the outlet of the air source evaporator, The outlet of the water source evaporator is connected to the inlet of the throttle valve; the three interfaces of the second three-way valve are respectively connected to the inlet of the air source evaporator, the inlet of the water source evaporator and the compressor machine outlet connection.

According to a preferred embodiment, the heating device further includes a second control valve group, the second control valve group is arranged on the first heating circuit, the second heating circuit and the third heating circuit, And the second control valve group is used to control the on-off state of the first heating circuit, the second heating circuit and the third heating circuit.

According to a preferred embodiment, the second control valve group includes a first cut-off valve, a second cut-off valve, a third cut-off valve, a fourth cut-off valve and a fifth cut-off valve, wherein the first cut-off valve is set at the On the water supply pipeline of the first heating circuit, the second cut-off valve is arranged on the return water pipeline of the first heating circuit; the third cut-off valve is arranged on the second heating circuit and the third heating circuit On the water supply pipeline, the fourth shut-off valve is set on the return water pipeline of the second heating circuit and the third heating circuit; the fifth shut-off valve is set on the hot water storage tank and the dual heat source Between the water source evaporators of the heat pump modules.

According to a preferred embodiment, the heating device further includes a first water pump, a second water pump and a third water pump, wherein the first water pump is arranged for connecting the solar heat collecting module and the hot water storage tank On the pipeline, the second water pump is arranged on the water supply pipelines of the first heating circuit, the second heating circuit and the third heating circuit, and the third water pump is arranged for connecting the heat storage The pipeline of the water tank and the water source evaporator of the dual heat source heat pump module.

According to a preferred embodiment, the heating device further includes a first temperature detector, the first temperature detector is located in the hot water storage tank, and the first temperature detector is used to detect the temperature of the hot water storage tank. water temperature inside.

According to a preferred embodiment, the heating device further includes a second temperature detector, the second temperature detector is located on the water supply pipelines of the second heating circuit and the third heating circuit, and the second temperature The detector is used to detect the water temperature on the water supply pipelines of the second heating circuit and the third heating circuit.

The control method of the heating device described in any one of the technical solutions of the present invention includes the following steps:

Obtain the water temperature in the hot water storage tank;

Comparing the water temperature in the hot water storage tank with a preset temperature;

On-off states of the first heating circuit, the second heating circuit and the third heating circuit are controlled based on the comparison result between the water temperature in the hot water storage tank and the preset temperature.

According to a preferred embodiment, when the water temperature in the hot water storage tank satisfies T> _T11 , the first heating circuit is controlled to be connected, and the second heating circuit and the third heating circuit are controlled to be disconnected. state;

When the water temperature in the hot water storage tank satisfies T ₁₂ ≤ T ≤ T ₁₁ , control the first heating circuit and the second heating circuit to be in a connected state, and control the third heating circuit to be in a disconnected state;

When the water temperature in the hot water storage tank satisfies T< _T12 , the first heating circuit and the second heating circuit are controlled to be disconnected, and the third heating circuit is controlled to be connected;

Wherein, T is the water temperature in the hot water storage tank, T ₁₁ is the first preset temperature, and T ₁₂ is the second preset temperature.

According to a preferred embodiment, when the second heating circuit or the third heating circuit is connected, the control method further includes the following steps:

Obtaining the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit;

Comparing the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit with the required temperature of the terminal equipment;

The opening degree of the second control valve group on the second heating circuit or the third heating circuit is controlled based on the comparison result of the water temperature on the water supply pipeline and the required temperature of the terminal equipment.

According to a preferred embodiment, when the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit satisfies T'< _T21 , the second heating circuit or the third heating circuit on the third heating circuit is controlled. The opening of the second control valve group decreases;

When the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit satisfies T'≥T ₂₁ , control the opening of the second control valve group on the second heating circuit or the third heating circuit degree increase;

Wherein, T' is the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit, and T ₂₁ is the required temperature of the terminal equipment.

The heating device and its control method provided by the present invention have at least the following beneficial technical effects:

In the heating device and its control method of the present invention, a heating cycle loop is formed between the solar heat collection module and the hot water storage tank, the water in the hot water storage tank can be heated by solar energy, and the hot water storage tank is connected to the terminal equipment and The first heating circuit is formed, that is, when the water temperature in the hot water storage tank is high enough, the hot water in the hot water storage tank can be used to heat the terminal equipment; the first heating component is connected with the terminal equipment to form a second heating circuit, and the storage The hot water tank is connected to the second heating component, and the second heating component is connected to the terminal equipment to form a third heating circuit. Three heating circuits provide heating for terminal equipment.

In the heating device and its control method of the present invention, the dual heat source heat pump module includes a first heating component and a second heating component. For example, the first heating component can be an air source heating component, and the second heating component can be a water source heating component. The dual heat source The form of complementary heating can avoid the limitations of a single heat source, not only solves the technical problem that the efficiency of air source heating components is significantly reduced in winter, but also solves the technical problem that the application of water source heat pumps has relatively large limitations. On the other hand, the heating device and its control method of the present invention include multiple heating circuits, and the corresponding heating circuits can be selected according to the water temperature in the hot water storage tank, so that the multiple heating circuits complement each other. That is to say, the heating device and its control method of the present invention, in the form of multiple heating circuits complementing each other, can not only effectively utilize clean energy such as solar energy and air energy, but also enable the heating device of the present invention to heat terminal equipment across day and night, Avoiding the influence of meteorological conditions and solar energy instability factors, the time for solar energy to directly heat the hot water in the hot water storage tank to meet the temperature required by the terminal equipment is relatively short, and at the same time, the required area of the solar collector is large, resulting in a decrease in solar energy utilization The problem.

In the heating device and its control method of the present invention, the hot water storage tank is connected to the second heating component, and the second heating component is connected to the terminal equipment to form a third heating circuit, that is, the water temperature in the hot water storage tank does not meet the requirements of the terminal equipment When , the hot water storage tank can be used as the heat supply end of the evaporation side of the second heating component, thereby improving the heat exchange efficiency of the evaporation side.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of a preferred embodiment of the heating device of the present invention;

Fig. 2 is a flow chart of a preferred embodiment of the control method of the heating device of the present invention;

Fig. 3 is a flow chart of a preferred embodiment of the control method of the heating device of the present invention.

In the figure: 11. Solar heat collection module; 12. Hot water storage tank; 13. Dual heat source heat pump module; 131. Air source evaporator; 132. Water source evaporator; 133. Compressor; 134. Throttle valve; 135. Condenser; 136, first three-way valve; 137, second three-way valve; 14, terminal equipment; 151, first stop valve; 152, second stop valve; 153, third stop valve; 154, fourth stop valve valve; 155, the fifth stop valve; 161, the first water pump; 162, the second water pump; 163, the third water pump; 171, the first temperature detector; 172, the second temperature detector.

detailed description

In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

The heating device and its control method of the present invention will be described in detail below with reference to Figures 1-3 and Embodiments 1 and 2 of the description.

Example 1

This embodiment describes the heating device of the present invention in detail.

The heating device of this embodiment includes a solar heat collection module 11 , a hot water storage tank 12 , a dual heat source heat pump module 13 and a terminal device 14 , as shown in FIG. 1 . Preferably, a heating cycle loop is formed between the solar heat collection module 11 and the hot water storage tank 12, and the hot water storage tank 12 is connected to the terminal equipment 14 to form a first heating loop; the dual heat source heat pump module 13 includes a first heating assembly and The second heating assembly, wherein the first heating assembly is connected to the terminal equipment 14 and forms a second heating circuit; the hot water storage tank 12 is connected to the second heating assembly, and the second heating assembly is connected to the terminal equipment 14 to form a third heating circuit ,As shown in Figure 1. The first heating component is, for example, an air source heating component, and the second heating component is, for example, a water source heating component. The terminal equipment 14 is, for example, a geothermal coil.

Specifically, the water outlet end of the hot water storage tank 12 is connected to the water inlet end of the terminal equipment 14, and the water return end of the hot water storage tank 12 is connected to the water outlet end of the terminal equipment 14, so that the hot water storage tank 12 and the terminal equipment 14 A first heating circuit is formed between them. Similarly, the water outlet end of the first heating component is connected to the water inlet end of the terminal equipment 14, and the water return end of the first heating component is connected to the water outlet end of the terminal equipment 14, so that a water supply is formed between the first heating component and the terminal equipment 14. The second heating circuit; the water outlet of the second heating component is connected to the water inlet of the terminal equipment 14, and the return water end of the second heating component is connected to the water outlet of the terminal equipment 14, so that the connection between the second heating component and the terminal equipment 14 Between the formation of the third heating circuit.

In the heating device of this embodiment, a heating cycle is formed between the solar heat collection module 11 and the hot water storage tank 12, and solar energy can be used to heat the water in the hot water storage tank 12; and the hot water storage tank 12 and the terminal equipment 14 Connect and form the first heating circuit, that is, when the water temperature in the hot water storage tank 12 is high enough, the hot water in the hot water storage tank 12 can be used to heat the terminal equipment 14; the first heating component is connected with the terminal equipment 14 and forms The second heating circuit, the hot water storage tank 12 is connected to the second heating assembly, and the second heating assembly is connected to the terminal equipment 14 to form a third heating circuit, that is, when the water temperature in the hot water storage tank 12 does not meet the requirements of the terminal equipment 14 , the terminal equipment 14 can also be heated through the second heating circuit or the third heating circuit.

In the heating device of this embodiment, the dual heat source heat pump module 13 includes a first heating assembly and a second heating assembly. For example, the first heating assembly can be an air source heating assembly, and the second heating assembly can be a water source heating assembly. The form of heat can avoid the limitation of a single heat source. It not only solves the obvious reduction in the efficiency of the air source heating component in the winter heating device, but also solves the technical problem that the application of the water source heat pump has relatively large limitations. On the other hand, the heating device of this embodiment includes multiple heating circuits, and the corresponding heating circuit can be selected according to the water temperature in the hot water storage tank 12, so that the multiple heating circuits complement each other. That is to say, the heating device of this embodiment, in the form of multiple heating circuits complementing each other, can not only effectively utilize clean energy such as solar energy and air energy, but also enable the heating device of this embodiment to provide heat for the terminal equipment 14 across day and night, avoiding In order to be affected by meteorological conditions and unstable factors of solar energy, the time for solar energy to directly heat the hot water in the hot water storage tank 12 to meet the temperature required by the terminal equipment 14 is relatively short. Lowering the problem.

In the heating device of this embodiment, the hot water storage tank 12 is connected to the second heating assembly, and the second heating assembly is connected to the terminal equipment 14 to form a third heating circuit, that is, the temperature of the water in the hot water storage tank 12 does not meet the requirements of the terminal equipment 14. When required, the hot water storage tank 12 can be used as the heat supply end of the evaporation side of the second heating component, thereby improving the heat exchange efficiency of the evaporation side.

According to a preferred embodiment, the dual heat source heat pump module 13 includes an air source evaporator 131, a water source evaporator 132, a compressor 133, a throttle valve 134 and a condenser 135, wherein the air source evaporator 131 and the water source evaporator 132 are arranged in parallel ,As shown in Figure 1. The air source evaporator 131 , compressor 133 , condenser 135 , throttle valve 134 are sequentially connected with the air source evaporator 131 to form a first heating assembly, as shown in FIG. 1 . The water source evaporator 132 , the compressor 133 , the condenser 135 , and the throttle valve 134 are sequentially connected with the water source evaporator 132 to form a second heating assembly, as shown in FIG. 1 . That is, the first heating component is an air source heating component, and the air source evaporator 131 of the air source heating component can use the energy in the air for heating, and its heating principle can be the same as that of the prior art, so it will not be repeated here; the second heating The component is a water source heating component, and the water source evaporator 132 of the water source heating component can use water energy for heating, and its heating principle can be the same as that of the prior art, so it will not be repeated here. In the heating device of the preferred technical solution of this embodiment, the dual heat source heat pump module 13 includes an air source heating component and a water source heating component. The technical problem that the efficiency of the heating device is obviously reduced also solves the technical problem that the application of the water source heat pump has relatively large limitations.

According to a preferred embodiment, the dual heat source heat pump module 13 also includes a first control valve group, the first control valve group is arranged on the first heating component and the second heating component, and the first control valve group is used to control the first heating component and the on-off state of the second heating component. The on-off state mentioned in the preferred technical solution of this embodiment includes a connected state and a disconnected state. The heating device of the preferred technical solution of this embodiment also includes a first control valve group, through which the on-off state of the first heating assembly and the second heating assembly can be controlled, so as to be able to The water temperature selects the first heating component or the second heating component to heat the terminal equipment 14 .

Preferably, the first control valve group includes a first three-way valve 136 and a second three-way valve 137, wherein the three interfaces of the first three-way valve 136 are respectively connected to the outlet of the air source evaporator 131 and the outlet of the water source evaporator 132. The outlet is connected to the inlet of the throttle valve 134; the three ports of the second three-way valve 137 are respectively connected to the inlet of the air source evaporator 131, the inlet of the water source evaporator 132 and the outlet of the compressor 133, as shown in FIG. 1 . The inlet of the water source evaporator 132 refers to the inlet on the side where the water source evaporator 132 is connected to the compressor 133; the outlet of the water source evaporator 132 refers to the outlet on the side where the water source evaporator 132 is connected to the throttle valve 134, as shown in Figure 1 . Referring to FIG. 1 again, it can be seen that the water source evaporator 132 has another inlet and another outlet on the side where the water source evaporator 132 is connected to the hot water storage tank 12 . Specifically, when the first heating component is required to provide heating for the terminal equipment 14, the interface connecting the first three-way valve 136 and the second three-way valve 137 to the air source evaporator 131 is in a communication state, and the interface communicating with the water source evaporator 132 is in a state of communication. disconnected state, so that the dual heat source heat pump module 13 is used as an air source heating component; when the second heating component is required to heat the terminal equipment 14, the first three-way valve 136 and the second three-way valve 137 are connected to the interface of the water source evaporator 132 In the connected state, the interface communicating with the air source evaporator 131 is in the disconnected state, so that the dual heat source heat pump module 13 acts as a water source heating component.

According to a preferred embodiment, the heating device further includes a second control valve group, the second control valve group is arranged on the first heating circuit, the second heating circuit and the third heating circuit, and the second control valve group is used to control the first On-off status of the heating circuit, the second heating circuit and the third heating circuit. The heating device of the preferred technical solution of this embodiment also includes a second control valve group, through which the on-off status of the first heating circuit, the second heating circuit and the third heating circuit can be controlled, so that the The water temperature in the water tank 12 selects at least one heating circuit among the first heating circuit, the second heating circuit and the third heating circuit to heat the terminal equipment 14 .

Preferably, the second control valve group includes a first cut-off valve 151, a second cut-off valve 152, a third cut-off valve 153, a fourth cut-off valve 154 and a fifth cut-off valve 155, wherein the first cut-off valve 151 is arranged at the first On the water supply pipeline of the heating circuit, the second stop valve 152 is arranged on the return water pipeline of the first heating circuit; the third stop valve 153 is arranged on the water supply pipeline of the second heating circuit and the third heating circuit, and the fourth stop valve 154 is set On the return water pipelines of the second heating circuit and the third heating circuit; the fifth cut-off valve 155 is arranged between the hot water storage tank 12 and the water source evaporator 132 of the dual heat source heat pump module 13 , as shown in FIG. 1 . Specifically, when the first heating circuit is required to supply heat to the terminal equipment 14, the first cut-off valve 151 and the second cut-off valve 152 are in the open state, and the third cut-off valve 153, the fourth cut-off valve 154, and the fifth cut-off valve 155 are in the closed state. , so that the hot water in the hot water storage tank 12 can be sent to the terminal equipment 14 through the first shut-off valve 151 , and the return water after heat exchange with the terminal equipment 14 returns to the hot water storage tank 12 through the second shut-off valve 152 . When the second heating circuit is required to supply heat to the terminal equipment 14, the third shut-off valve 153 and the fourth shut-off valve 154 are opened, and the rest of the shut-off valves are closed, so that the return water after heat exchange with the terminal equipment 14 can pass through the fourth shut-off valve. The cut-off valve 154 returns to the condenser 135 , exchanges heat with the condenser 135 and sends it to the terminal equipment 14 through the third cut-off valve 153 . When the third heating circuit is required to heat the terminal equipment 14, the first cut-off valve 151 and the second cut-off valve 152 are in the closed state, and the third cut-off valve 153, the fourth cut-off valve 154 and the fifth cut-off valve 155 are in the open state, so that The hot water storage tank 12 is used as the heat supply end of the water source evaporator 132, and after the hot water is pressurized and exchanged by the compressor 133 and the condenser 135, it is sent to the terminal equipment 14 through the third shut-off valve 153, and the terminal equipment 14 The return water after heat exchange returns to the condenser 135 through the fourth stop valve 154 .

According to a preferred embodiment, the heating device further includes a first water pump 161, a second water pump 162 and a third water pump 163, wherein the first water pump 161 is arranged on the pipeline for connecting the solar heat collection module 11 and the hot water storage tank 12 The second water pump 162 is arranged on the water supply pipelines of the first heating circuit, the second heating circuit and the third heating circuit, and the third water pump 163 is arranged on the water source evaporator for connecting the hot water storage tank 12 and the dual heat source heat pump module 13 132 on the pipeline, as shown in Figure 1. The heating device of the preferred technical solution of this embodiment also includes a first water pump 161, a second water pump 162 and a third water pump 163. Through the action of the first water pump 161, the heating between the solar heat collection module 11 and the hot water storage tank 12 can be accelerated. The water flow velocity between the dual heat source heat pump module 13 and the terminal equipment 14 can be accelerated by the second water pump 162; the water flow velocity between the hot water storage tank 12 and the water source evaporator 132 can be accelerated by the third water pump 163 the water velocity between them.

According to a preferred embodiment, the heating device further includes a first temperature detector 171, the first temperature detector 171 is located in the hot water storage tank 12, and the first temperature detector 171 is used to detect the water temperature in the hot water storage tank 12, such as Figure 1 shows. The heating device of the preferred technical solution of this embodiment also includes a first temperature detector 171, through which the water temperature in the hot water storage tank 12 can be monitored, so as to determine the first heating circuit, the second heating circuit and The on-off state of the third heating circuit provides a basis, so that the heating device can not only meet the requirements of the terminal equipment 14, but also realize the advantages of energy saving and high efficiency.

According to a preferred embodiment, the heating device further includes a second temperature detector 172, the second temperature detector 172 is located on the water supply pipelines of the second heating circuit and the third heating circuit, and the second temperature detector 172 is used to detect the temperature of the second heating circuit. circuit and the water temperature on the water supply pipeline of the third heating circuit, as shown in Figure 1. The heating device of the preferred technical solution of this embodiment also includes a second temperature detector 172, through which the second temperature detector 172 can monitor the water temperature on the water supply pipelines of the second heating circuit and the third heating circuit, so as to determine the temperature of each shut-off valve. The opening degree provides a basis, so that the heating device can meet the demand of the terminal equipment 14.

Example 2

This embodiment describes in detail the control method of the heating device of the present invention.

Fig. 2 shows a flow chart of a preferred implementation of the control method of the heating device in this embodiment. As shown in Figure 2, the method for controlling the heating device of any one of the technical solutions in Embodiment 1 includes the following steps:

Step 1: Obtain the water temperature in the hot water storage tank 12 .

Step 2: Compare the water temperature in the hot water storage tank 12 with the preset temperature.

Step 3: Based on the comparison result of the water temperature in the hot water storage tank 12 and the preset temperature, control the on-off status of the first heating circuit, the second heating circuit and the third heating circuit.

The control method of the heating device in this embodiment controls the on-off status of the first heating circuit, the second heating circuit and the third heating circuit based on the comparison result of the water temperature in the hot water storage tank 12 and the preset temperature, so that multiple The heating circuits complement each other, not only can effectively utilize clean energy such as solar energy and air energy, but also enable the heating device of this embodiment to provide heat for the terminal equipment 14 across day and night, avoiding the influence of meteorological conditions and unstable factors of solar energy. The time to directly heat the hot water in the hot water storage tank 12 to meet the temperature required by the terminal equipment 14 is relatively short, and at the same time, the area of the solar collector is required to be large, resulting in a decrease in the utilization rate of solar energy. In the second aspect, the on-off state of the first heating circuit, the second heating circuit and the third heating circuit is controlled based on the comparison result of the water temperature in the hot water storage tank 12 and the preset temperature, and the limitation of a single heat source can also be avoided. It not only solves the obvious reduction in the efficiency of the heating device of the air source heating component in winter, but also solves the technical problem that the application of the water source heat pump has relatively large limitations. In the third aspect, when the water temperature in the hot water storage tank 12 does not meet the requirements of the terminal equipment 14, the hot water storage tank 12 can be used as the heat supply end of the evaporation side of the second heating component, thereby improving the heat exchange efficiency of the evaporation side.

Fig. 3 shows a flow chart of another preferred implementation of the control method of the heating device in this embodiment. As shown in Figure 3, when the water temperature in the hot water storage tank 12 satisfies T> _T11 , the first heating circuit is controlled to be in a connected state, and the second heating circuit and the third heating circuit are controlled to be in a disconnected state; the hot water storage tank 12 When the water temperature in the storage tank 12 satisfies T ₁₂ ≤ T ≤ T ₁₁ , the first heating circuit and the second heating circuit are controlled to be connected, and the third heating circuit is controlled to be disconnected; the water temperature in the hot water storage tank 12 satisfies T<T ₁₂ , control the first heating circuit and the second heating circuit to be disconnected, and control the third heating circuit to be connected; wherein, T is the water temperature in the hot water storage tank 12, T ₁₁ is the first preset temperature, and T ₁₂ for the second preset temperature. More preferably, the first preset temperature is 45°C, and the second preset temperature is 30°C.

Specifically, during the day, with the continuous heating of solar energy, the temperature in the hot water storage tank 12 continues to rise. When the solar energy heats the water in the hot water storage tank 12 above the first preset temperature, the hot water storage tank 12 The hot water in the tank can meet the demand of the terminal equipment 14. At this time, the first heating circuit is controlled to be connected, the second heating circuit and the third heating circuit are controlled to be disconnected, that is, the first shut-off valve 151 and the second shut-off valve 152 are controlled to be in an open state, and the third shut-off valve 153, The fourth shut-off valve 154 and the fifth shut-off valve 155 are in the closed state, so that the hot water in the hot water storage tank 12 can be sent to the terminal equipment 14 through the first shut-off valve 151, and the return water after heat exchange with the terminal equipment 14 can pass through The second stop valve 152 returns to the hot water storage tank 12 .

When the solar energy in cloudy days is not enough to heat the water in the hot water storage tank 12 above the first preset temperature, the combined heating mode of the first heating circuit and the second heating circuit can be adopted, through which the second heating circuit Auxiliary heating to meet the needs of terminal equipment 14. At this time, control the first heating circuit and the second heating circuit to be in a connected state, and control the third heating circuit to be in a disconnected state, that is, control the connection between the first three-way valve 136 and the second three-way valve 137 and the air source evaporator 131 The interface is in the connected state, the interface connected with the water source evaporator 132 is in the disconnected state, the first stop valve 151 to the fourth stop valve 154 are controlled to be in the open state, and the fifth stop valve 155 is in the closed state, so that the hot water storage tank can The hot water in 12 is sent to the terminal equipment 14 through the first shut-off valve 151, and the return water after heat exchange with the terminal equipment 14 returns to the hot water storage tank 12 through the second shut-off valve 152; The return water after heat exchange returns to the condenser 135 through the fourth cut-off valve 154 , exchanges heat with the condenser 135 , and then is sent to the terminal equipment 14 through the third cut-off valve 153 .

When the temperature is low in winter and the water in the hot water storage tank 12 is lower than the second preset temperature, using the hot water storage tank 12 to supply heat to the terminal equipment 14 can no longer meet the needs of the terminal equipment 14, and the third heating can be used The circuit supplies heat to the terminal equipment 14 to meet the demand of the terminal equipment 14 . At this time, the hot water storage tank 12 can be used as the heat source of the water source evaporator 132 to improve the heat exchange efficiency of the water source evaporator 132 . At this time, the first heating circuit and the second heating circuit are controlled to be disconnected, and the third heating circuit is controlled to be connected, that is, the connection between the first three-way valve 136 and the second three-way valve 137 and the air source evaporator 131 is controlled. The interface is disconnected, the interface connected with the water source evaporator 132 is in the connected state, the first stop valve 151 and the second stop valve 152 are controlled to be in the closed state, and the third stop valve 153 to the fifth stop valve 155 are in the open state, so that The hot water storage tank 12 can be used as the heat supply end of the water source evaporator 132, and then the hot water is pressurized and exchanged by the compressor 133 and the condenser 135, and then sent to the terminal equipment 14 through the third shut-off valve 153, and the terminal equipment 14 The return water after heat exchange returns to the condenser 135 through the fourth stop valve 154 .

According to a preferred embodiment, when the second heating circuit or the third heating circuit is in a connected state, the control method further includes the following steps:

Obtain the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit;

Comparing the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit with the required temperature of the terminal equipment 14;

Based on the comparison result of the water temperature on the water supply pipeline and the required temperature of the terminal equipment 14, the opening degree of the second control valve group on the second heating circuit or the third heating circuit is controlled.

Preferably, the second control valve group on the second heating circuit or the third heating circuit is the third shut-off valve 153 , the fourth shut-off valve 154 and the fifth shut-off valve 155 described in Embodiment 1.

The control method of the preferred technical solution of this embodiment, the comparison result of the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit and the temperature demanded by the terminal equipment 14 is used to control the second control on the second heating circuit or the third heating circuit The opening of the valve group can not only make the water supply temperature of the second heating circuit or the third heating circuit meet the demand of the terminal equipment 14, but also speed up the heating speed to the terminal equipment 14.

Preferably, when the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit satisfies T'< _T21 , the opening degree of the second control valve group on the second heating circuit or the third heating circuit is controlled to decrease; When the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit satisfies T'≥T ₂₁ , the opening degree of the second control valve group on the second heating circuit or the third heating circuit is controlled to increase; wherein, T' is The water temperature on the water supply pipeline of the second heating circuit or the third heating circuit, T ₂₁ is the required temperature of the terminal equipment 14 . The required temperature of the terminal equipment 14 is, for example, 45°C. Specifically, when the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit satisfies T'< _T21 , the opening degree of the second control valve group on the second heating circuit or the third heating circuit is controlled to decrease, Thereby, the temperature of the water flowing out of the condenser 135 can be increased, so that the temperature of the water supply of the second heating circuit or the third heating circuit meets the demand of the terminal equipment 14; when the water supply pipeline of the second heating circuit or the third heating circuit When the water temperature satisfies T′≥T ₂₁ , the opening degree of the second control valve group on the second heating circuit or the third heating circuit is controlled to increase, thereby speeding up the heating speed to the terminal equipment 14 .

In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner ", "outside", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (13)

1. A heating device, characterized in that it comprises a solar heat collecting module (11), a hot water storage tank (12), a dual heat source heat pump module (13) and a terminal device (14), the solar heat collecting module (11 ) forms a heating cycle loop with the hot water storage tank (12), and The hot water storage tank (12) is connected to the terminal equipment (14) to form a first heating circuit; the dual heat source heat pump module (13) includes a first heating component and a second heating component, wherein the first A heating assembly is connected to the terminal equipment (14) to form a second heating circuit; the hot water storage tank (12) is connected to the second heating assembly, and the second heating assembly is connected to the terminal equipment (14 ) to connect and form the third heating circuit. 2. The heating device according to claim 1, characterized in that, the dual heat source heat pump module (13) comprises an air source evaporator (131), a water source evaporator (132), a compressor (133), a throttle valve (134) and a condenser (135), wherein the air source evaporator (131) is arranged in parallel with the water source evaporator (132); The air source evaporator (131), the compressor (133), the condenser (135), the throttle valve (134) are sequentially connected with the air source evaporator (131) and form the the first heating element; The water source evaporator (132), the compressor (133), the condenser (135), and the throttle valve (134) are sequentially connected with the water source evaporator (132) to form the second Heating components. 3. The heating device according to claim 2, characterized in that, the dual heat source heat pump module (13) further comprises a first control valve group, and the first control valve group is arranged between the first heating component and the The second heating assembly, and the first control valve group is used to control the on-off state of the first heating assembly and the second heating assembly. 4. The heating device according to claim 3, characterized in that, the first control valve group comprises a first three-way valve (136) and a second three-way valve (137), wherein, The three interfaces of the first three-way valve (136) are respectively connected with the outlet of the air source evaporator (131), the outlet of the water source evaporator (132) and the inlet of the throttle valve (134) ; The three ports of the second three-way valve (137) are respectively connected with the inlet of the air source evaporator (131), the inlet of the water source evaporator (132) and the outlet of the compressor (133) . 5. The heating device according to claim 1, further comprising a second control valve group, the second control valve group is arranged in the first heating circuit, the second heating circuit and the second heating circuit. There are three heating circuits, and the second control valve group is used to control the on-off status of the first heating circuit, the second heating circuit and the third heating circuit. 6. The heating device according to claim 5, characterized in that, the second control valve group includes a first cut-off valve (151), a second cut-off valve (152), a third cut-off valve (153), a fourth cut-off valve Stop valve (154) and the fifth stop valve (155), wherein, The first shut-off valve (151) is set on the water supply pipeline of the first heating circuit, and the second shut-off valve (152) is set on the return water pipeline of the first heating circuit; The third cut-off valve (153) is arranged on the water supply pipelines of the second heating circuit and the third heating circuit, and the fourth cut-off valve (154) is arranged on the second heating circuit and the first heating circuit. On the return water pipe of the three heating circuits; The fifth stop valve (155) is arranged between the hot water storage tank (12) and the water source evaporator (132) of the dual heat source heat pump module (13). 7. The heating device according to claim 5, characterized in that it further comprises a first water pump (161), a second water pump (162) and a third water pump (163), wherein, The first water pump (161) is set on the pipeline used to connect the solar heat collection module (11) and the hot water storage tank (12), and the second water pump (162) is set on the first On the water supply pipelines of the heating circuit, the second heating circuit and the third heating circuit, the third water pump (163) is arranged for connecting the hot water storage tank (12) and the dual heat source heat pump module On the pipeline of the water source evaporator (132) of (13). 8. The heating device according to claim 1, characterized in that it further comprises a first temperature detector (171), the first temperature detector (171) is located in the hot water storage tank (12), the The first temperature detector (171) is used to detect the water temperature in the hot water storage tank (12). 9. The heating device according to claim 1, characterized in that it further comprises a second temperature detector (172), the second temperature detector (172) is located between the second heating circuit and the third heating circuit On the water supply pipeline of the circuit, the second temperature detector (172) is used to detect the water temperature on the water supply pipeline of the second heating circuit and the third heating circuit. 10. A method for controlling the heating device according to any one of claims 1 to 9, characterized in that it comprises the following steps: Obtain the water temperature in the hot water storage tank (12); Comparing the water temperature in the hot water storage tank (12) with the preset temperature; Based on the comparison result between the water temperature in the hot water storage tank (12) and the preset temperature, the on-off states of the first heating circuit, the second heating circuit and the third heating circuit are controlled. 11. The heating device control method according to claim 10, characterized in that, when the water temperature in the hot water storage tank (12) satisfies T>T ₁₁ , the first heating circuit is controlled to be in a connected state, and the control The second heating circuit and the third heating circuit are disconnected; When the water temperature in the hot water storage tank (12) satisfies T ₁₂ ≤ T ≤ T ₁₁ , control the first heating circuit and the second heating circuit to be connected, and control the third heating circuit to be disconnected state; When the water temperature in the hot water storage tank (12) satisfies T< _T12 , the first heating circuit and the second heating circuit are controlled to be disconnected, and the third heating circuit is controlled to be connected; Wherein, T is the water temperature in the hot water storage tank (12), _T11 is the first preset temperature, and _T12 is the second preset temperature. 12. The control method of the heating device according to claim 11, characterized in that, when the second heating circuit or the third heating circuit is in a connected state, the control method further comprises the following steps: Obtaining the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit; Comparing the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit with the required temperature of the terminal equipment (14); Based on the comparison result of the water temperature on the water supply pipeline and the required temperature of the terminal equipment (14), the opening degree of the second control valve group on the second heating circuit or the third heating circuit is controlled. 13. The heating device control method according to claim 12, characterized in that, when the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit satisfies T'< _T21 , the second heating circuit is controlled to The opening degree of the second control valve group on the second heating circuit or the third heating circuit is reduced; When the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit satisfies T'≥T ₂₁ , control the opening of the second control valve group on the second heating circuit or the third heating circuit degree increase; Wherein, T' is the water temperature on the water supply pipeline of the second heating circuit or the third heating circuit, and T ₂₁ is the required temperature of the terminal equipment (14).

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