Multi-energy complementary heating system combining air source heat pump and electric heat storage

Abstract

The utility model discloses a multi-energy complementary heating system combining an air source heat pump and electric heat storage, and aims to improve the energy utilization rate of the heating system through efficient energy scheduling and conversion. The system comprises an air source heat pump, an electric heat accumulator, a heat exchanger and a control system, and the heat exchanger is connected with the air source heat pump and the electric heat accumulator and can automatically adjust heat transfer and switching; the control system accurately regulates and controls operation of the heat exchanger through a sensor, a control unit and an electric valve, and flexible switching of cold and heat sources is achieved. By means of the system, energy use can be optimized under different environment conditions, and the purposes of energy saving and efficient heating are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heating equipment technical field more specifically, the utility model relates to a kind of multi-energy complementary heating system of air source heat pump and electric heat storage combination. BACKGROUND

[0002] With the increase of energy consumption, the traditional heating mode faces the problems of low energy efficiency, serious pollution and high operating cost. In recent years, air source heat pump has become a widely used heating equipment due to its high efficiency and environmental protection, but its energy efficiency is reduced in low temperature environment. As another convenient energy storage device, electric heat accumulator can store heat when electricity price is low and use it during peak period. By combining air source heat pump with electric heat accumulator, energy utilization can be optimized and energy waste can be reduced while ensuring heating effect.

[0003] However, the existing technology often cannot flexibly schedule the use of the two energy sources, and usually can only choose one heat source for heating, which is difficult to cope with different environmental conditions and energy demand. Therefore, how to improve the energy efficiency of the system and realize intelligent switching of the heat source is still a technical problem to be solved. SUMMARY

[0004] The utility model aims to provide a kind of multi-energy complementary heating system of air source heat pump and electric heat storage combination, by reasonable design heat exchanger and control system, so that air source heat pump and electric heat accumulator can be flexibly switched according to external environmental conditions and energy price, so as to realize efficient and energy-saving heating scheme.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A kind of multi-energy complementary heating system of air source heat pump and electric heat storage combination, comprising air source heat pump, electric heat accumulator, heat exchanger, control system, the air source heat pump includes compressor, evaporator, condenser, expansion valve, the electric heat accumulator includes electric heating element, heat storage container, temperature controller, the heat exchanger is connected air source heat pump and electric heat accumulator by heat exchange pipeline, the heat exchanger includes heat exchange pipeline and automatic switching valve, the control system includes main control unit, temperature sensor, current sensor, electric valve, the condenser is connected with indoor heating system by pipeline, the electric heat accumulator is connected with power supply by electric wiring, the temperature controller, temperature sensor and current sensor are connected with control system respectively, the control system controls the automatic switching of heat exchanger by electric valve.

[0007] As an improvement of the utility model, the heat exchange pipeline is connected with the condenser of air source heat pump and the heat storage container of electric heat accumulator to realize effective heat transfer.

[0008] As an improvement of the utility model, the compressor is connected with the condenser through the refrigerant pipeline, the compressor compresses the gas, the pressure of the gas is increased, and then the gas flows into the condenser through the pipeline; the expansion valve is connected with the evaporator, and the expansion valve controls the flow of the refrigerant into the evaporator.

[0009] As an improvement of the utility model, the electric heating element is arranged in the heat storage container, the electric heating element is connected with the temperature controller, the temperature controller disconnects the electric heating element when the set temperature is reached, and over-heating or over-power consumption is prevented.

[0010] Preferably, the electric heating element is connected with the external power supply through the electrical connector, the heat storage container is filled with graphite to store heat, the electric heating element is heated by electricity, and heat is transferred to the heat storage medium in the heat storage container.

[0011] As an improvement of the utility model, the electric valve is installed between the inlet and outlet pipelines of the heat exchanger, and is used for adjusting the heat source flow direction and switching the working state of the air source heat pump and the electric heat accumulator according to the instruction of the control system.

[0012] The multi-energy complementary heating system combining the air source heat pump and the electric heat storage has the following beneficial effects:

[0013] The air source heat pump and the electric heat accumulator are cooperatively worked, the flexible switching of the cold and heat sources is realized, the system can intelligently dispatch energy according to the external temperature change, the indoor temperature demand and the electricity price change, the system efficiency is maximized, and energy waste is avoided.

[0014] The temperature sensor, the current sensor and the control system are arranged, the system state can be monitored in real time, the working of the heat exchanger is automatically adjusted, the best performance of the system under different operating conditions is ensured, heat is intelligently adjusted and switched through the heat exchanger, complex mechanical devices and control systems are avoided, and the maintenance and management difficulty of the equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a connection relationship diagram of the air source heat pump;

[0017] Figure 3 It is a connection relationship diagram of the electric heat accumulator;

[0018] Figure 4The frame diagram of the utility model.

[0019] List of reference signs:

[0020] 1, air source heat pump;2, electric heat accumulator;3, heat exchanger;11, compressor;12, evaporator;13, condenser;14, expansion valve;21, electric heating element;22, heat storage container;23, temperature controller. DETAILED DESCRIPTION

[0021] The utility model is further illustrated below in combination with the drawings and specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the utility model and not used to limit the scope of the utility model. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component.

[0022] In addition, the terms "mount", "connect", and "connect" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] As shown in the figure, the utility model provides a kind of multi-energy complementary heating system of air source heat pump and electric heat storage combination, including air source heat pump 1, electric heat accumulator 2, heat exchanger 3, control system, the air source heat pump 1 includes compressor 11, evaporator 12, condenser 13, expansion valve 14, the electric heat accumulator 2 includes electric heating element 21, heat storage container 22, temperature controller 23, the heat exchanger 3 is connected air source heat pump 1 with electric heat accumulator 2 by heat exchange pipeline, the heat exchanger 3 includes heat exchange pipeline and automatic switching valve, the control system includes main control unit, temperature sensor, current sensor, electric valve, the condenser 13 is connected by pipeline with indoor heating system, the electric heat accumulator 2 is connected by electric wiring with power supply, the temperature controller 23, temperature sensor and current sensor are connected with control system respectively, the control system controls the automatic switching of heat exchanger 3 by electric valve.

[0024] The heat exchange pipeline of the utility model is connected with the condenser 13 of air source heat pump 1 and the heat storage container 22 of electric heat accumulator 2, to realize the effective transmission of heat.

[0025] The compressor 11 is connected with the condenser 13 through a refrigerant pipeline, the compressor 11 compresses gas, the pressure of the gas is increased, and then the gas flows into the condenser 13 through the pipeline; the expansion valve 14 is connected with the evaporator 12, and the expansion valve 14 is responsible for controlling the flow of the refrigerant into the evaporator 12. The expansion valve 14 reduces the pressure of the refrigerant, so that the refrigerant absorbs heat in the evaporator 12 and completes heat exchange.

[0026] The electric heating element 21 is arranged in the heat storage container 22, the electric heating element 21 is connected with the temperature controller 23, the temperature controller 23 is disconnected when the set temperature is reached, and excessive heating or excessive power consumption is prevented.

[0027] The electric heating element 21 is connected with an external power supply through an electrical connector, the heat storage container 22 is filled with graphite to store heat, the electric heating element 21 is heated by electricity, and heat is transferred to the heat storage medium in the heat storage container 22.

[0028] The electric valve is installed between the inlet and outlet pipelines of the heat exchanger 3, is used for adjusting the heat source flow direction according to the instruction of the control system, and switches the working state of the air source heat pump 1 and the electric heat accumulator 2.

[0029] The working principle of the multi-energy complementary heating system provided by the air source heat pump and the electric heat accumulator is as follows:

[0030] When there is a heating demand, the air source heat pump 1 starts to work, heat in a low-temperature environment is extracted by the compressor 11 and is transferred to the condenser 13, and the condenser 13 transfers heat to the heat exchanger 3 through a pipeline. The control system judges whether the indoor temperature meets the demand according to the feedback of the temperature sensor. If the indoor temperature is lower than the set value, the air source heat pump 1 continues to work; if the temperature has reached the set value, the system selects the electric heat accumulator 2 according to the electricity price and the external environment. The electric heat accumulator 2 heats the heat storage container 22 through the electric heating element 21, stores heat, and releases the heat when needed. When the electric heat accumulator 2 releases heat, the heat is transferred to the indoor heating system through the heat exchanger 3, so that the indoor temperature is stable.

[0031] It should be noted that, in this text, relational terms such as first and second and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between or among the entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover non-exclusive inclusions, so that a process, method, article, or device that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article, or device.

[0032] The accompanying drawings only illustrate the technical thought of the present application, and cannot be used to limit the protection scope of the present application. For those skilled in the art, some improvements and decorations can be made without departing from the principle of the present application, and all the improvements and decorations fall within the protection scope of the present application.

Claims

1. A multi-energy complementary heating system combining air source heat pump and electric heat storage, comprising an air source heat pump, an electric heat accumulator, a heat exchanger, and a control system, characterized in that: The air source heat pump comprises a compressor, an evaporator, a condenser and an expansion valve; the electric heat accumulator comprises an electric heating element, a heat storage container and a temperature controller; the heat exchanger is connected with the air source heat pump and the electric heat accumulator through a heat exchange pipeline; the heat exchanger comprises the heat exchange pipeline and an automatic switching valve; the control system comprises a main control unit, a temperature sensor, a current sensor and an electric valve; the condenser is connected with the indoor heating system through a pipeline; the electric heat accumulator is connected with a power supply through an electric wire; the temperature controller, the temperature sensor and the current sensor are connected with the control system respectively; the control system controls the automatic switching of the heat exchanger through the electric valve; and the electric valve is installed between the inlet and outlet pipelines of the heat exchanger.

2. The air source heat pump combined with electric heat storage multi-energy complementary heating system according to claim 1, characterized in that: The heat exchange pipeline is connected with the condenser of the air source heat pump and the heat storage container of the electric heat accumulator.

3. The air source heat pump combined with electric heat storage multi-energy complementary heating system according to claim 2, characterized in that: The compressor is connected with the condenser through a refrigerant pipeline, and the expansion valve is connected with the evaporator.

4. The air source heat pump combined with electric heat storage multi-energy complementary heating system according to claim 1, characterized in that: The electric heating element is arranged in the heat storage container, and the electric heating element is connected with the temperature controller.

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