CN206989303U - A kind of accumulation of energy electric heating apparatus - Google Patents

Abstract

The utility model provides an energy storage electric heating device, which includes a heating box, an electric heating component, a dual power switch, a new energy system and a control unit; There are multiple heat storage bodies in the heating box between them, and there are gaps between adjacent heat storage bodies. The air inlet, air outlet and the gaps form the air duct for air circulation; the electric heating component is connected to the heat storage body , the heat storage body is used to store the heat of the electric heating component and exchange heat with the air in the air duct; the output terminal of the dual power switch is connected to the electric heating component, the first input terminal of the dual power switch is connected to the new energy system, and the first input terminal of the dual power switch is connected to the new energy system. The two input ends are connected with the mains power system. In the utility model, by controlling the operation of the dual power switch, the new energy system and the mains system are complementary, adapting to the characteristics of the intermittent power generation of the new energy system, and realizing the rational utilization of energy; the thermal energy is stored and the air is heated by the heat storage body.

Description

An energy storage electric heating device

technical field

The utility model relates to the technical field of heating equipment, in particular to an energy storage electric heating device.

Background technique

According to the division of building thermal engineering, more than 2/3 of my country's land area belongs to severe cold and cold areas. In order to ensure the basic conditions of survival, buildings must be heated.

The heating devices on the market all use electric energy to provide energy. When there is a heating demand, converting electric energy into thermal energy to heat the room requires a lot of electric energy. And when heating, the heating device requires that the power supply can continuously and stably provide electric energy in order to operate stably. However, the current new energy system has the disadvantages of discontinuity and poor system output, which cannot meet the requirements of the heating device for power stability. Therefore, the current heating device needs to be powered by the mains power system. How to reasonably use the new energy system to replace the mains power system to provide energy for the heating device and reduce the dependence of the heating device on the mains power system is an important problem to be solved urgently.

Utility model content

(1) Technical problems to be solved

The purpose of this utility model is to provide an energy storage electric heating device to solve the problem that the existing heating device is not suitable for the intermittent power generation of the new energy system, realize the application of the new energy system in the heating device, and reduce the heating device's impact on the mains system. rely.

(2) Technical solution

In order to solve the above technical problems, the utility model provides an energy storage electric heating device, including a heating box, an electric heating assembly, a dual power switch, a new energy system and a control unit; wherein, the heating box is provided with an air inlet and the air outlet, the heating box between the air inlet and the air outlet is provided with a plurality of heat storage bodies, and there is a gap between the adjacent heat storage bodies, the air inlet, the air outlet and the gap An air channel for air circulation is formed; the electric heating component is connected to the heat storage body, and the heat storage body is used to store the heat of the electric heating component and exchange heat with the air in the air channel; the The output end of the dual power switch is connected to the electric heating assembly, the first input end of the dual power switch is connected to the new energy system, and the second input end of the dual power switch is connected to the mains system; the The control unit is connected with the dual power switch, and is used to control the operation of the dual power switch to realize the switching between the new energy system and the mains power system.

Wherein, a fan is provided at the air inlet and/or the air outlet, and the fan is connected to the control unit.

Wherein, a voltage sensor is provided on the connection circuit between the first input end of the dual power switch and the new energy system, and the voltage sensor is connected to the control unit.

Wherein, the new energy system includes a solar panel, a battery and an AC inverter, the solar panel is connected to the battery, and the battery is connected to the first input end of the dual power switch through the AC inverter , the voltage sensor is arranged on the connection circuit between the AC inverter and the first input end of the dual power switch.

Wherein, the heat storage body is provided with a temperature sensor, and the temperature sensor is connected with the control unit.

Wherein, the control unit is arranged on the heating box, and a thermal protection layer is provided between the control unit and the heating box.

Wherein, the width of the gap between adjacent heat storage bodies is 4-6 cm.

Wherein, a card slot is provided on the inner wall of the heating box, and the heat storage body is fixed in the card slot.

Wherein, the heating box body is provided with a heat insulation layer.

Wherein, pulleys are provided outside the bottom plate of the heating box.

(3) Beneficial effects

Compared with the prior art, the utility model has the following advantages:

The utility model provides an energy storage electric heating device. The output end of the dual power switch is connected to the electric heating component, the first input end of the dual power switch is connected to the new energy system, and the second input end of the dual power switch is connected to the market. electrical system connection. When the output voltage of the new energy system is stable, the first input terminal of the dual power switch is connected; when the output voltage of the new energy system is unstable, the second input terminal of the dual power switch is The power supply of heating components realizes the switch between the new energy system and the mains system, makes the mains system and the new energy system complement each other, adapts to the intermittent power generation characteristics of the new energy system, and reduces the dependence of the heating device on the mains system. In addition, the new energy system and the low power grid can be used at the same time to realize the rational use of energy and reduce the operating cost of electric heating devices. At the same time, the thermal energy is stored through the heat storage body, which has the characteristics of high heat storage density and stable operation. In the case of fluctuations in the new energy system, use the stored heat to continue heating to avoid affecting the operation of the device.

Description of drawings

Fig. 1 is a structural schematic diagram of an energy storage electric heating device of the present utility model;

Fig. 2 is a schematic diagram of the installation of the axial flow fan in Embodiment 1 of the present utility model;

Figure 3 is a schematic diagram of the connection between the heat storage body and the electric heating assembly in Embodiment 1 of the utility model;

Explanation of reference signs

1-Heating box; 2-Control unit; 3-Heat storage body; 4-Dual power switch; 5-Output terminal; 6-First input terminal; 7-Second input terminal; 8-Battery; 9-Solar panel 10-voltage sensor; 11-electric heating assembly; 12-heat storage body shell; 13-bottom plate; 14-axial fan; 15-pulley; 16-AC inverter.

detailed description

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

In the description of the present utility model, it should be noted that unless otherwise specified, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", " The orientation or positional relationship indicated by "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 specific orientation, be constructed and operate in a specific 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 utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood 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, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Example 1:

As shown in FIG. 1 , an energy storage electric heating device provided in this embodiment includes a heating box 1 , an electric heating assembly, a dual power switch 5 , a new energy system and a control unit 2 .

The heating box 1 is made of stainless steel, the bottom is provided with an air inlet, and the top is provided with an air outlet. Further, a fan is provided at the air inlet and/or the air outlet, and the fan is connected to the control unit 2, and the control unit 2 controls the operation of the axial flow fan. As shown in FIG. 2 , in this embodiment, the fan is an axial flow fan 14 , and a plurality of axial flow fans 14 are arranged on the bottom plate 13 of the heating box 1 .

The heating box 1 is provided with a plurality of heat storage bodies 3, and the heat storage bodies 3 are located between the air inlet and the air outlet. As shown in FIG. 3 , the heat storage body 3 includes a heat storage body shell 12 , and the heat storage body shell 12 is filled with a composite phase change material. The electric heating assembly 11 is attached to the right side of the heat storage body shell 12 . The electric heating assembly 11 is used for heating the heat storage body 3 . A plurality of heat storage bodies 3 are arranged in parallel, and gaps are provided between adjacent heat storage bodies 3 . The air inlet, the air outlet and the gap of the heating box 1 form an air duct for air circulation. Cold air circulates in the heating box 1 through the air duct, and the heat storage body 3 is used to store the heat of the electric heating component 11 and exchange heat with the air in the air duct.

The output terminal 5 of the dual power switch 4 is connected to the electric heating assembly 11; the first input terminal 6 of the dual power switch 4 is connected to the new energy system; the second input terminal 7 of the dual power switch 4 is connected to the mains system. The control unit 2 is connected with the dual power switch 4 for controlling the operation of the dual power switch 4 to realize switching between the new energy system and the mains power system.

In this embodiment, a voltage sensor 10 is provided on the connection circuit between the first input end 6 of the dual power switch 4 and the new energy system, and the voltage sensor 10 is connected to the control unit 2 . The voltage sensor 10 is used to detect the voltage of the new energy system and feed it back to the control unit 2 .

The voltage sensor 10 is a device that converts the measured electric quantity parameters into DC current and DC voltage and outputs analog or digital signals in isolation. In practical applications, the voltage sensor 10 can be used to measure voltage or current signals with serious waveform distortion in the power grid, and can also measure non-sinusoidal waveforms such as square waves and triangular waves.

In this embodiment, the new energy system includes a solar panel 9, a battery 8 and an AC inverter 16, the solar panel 9 is connected to the battery 8, and the battery 8 is connected to the first input terminal 6 of the dual power switch 4 through the AC inverter 16 . The voltage sensor 10 is arranged on the connection circuit between the AC inverter 16 and the first input terminal of the dual power switch 4 .

The AC inverter 16 is a device that uses electronic components to switch direct current and convert it to alternating current. In practical applications, the AC inverter 16 is connected to the storage battery 8 to convert the DC power into a usable AC power.

Further, the control unit 2 is arranged on the heating box 1, and a thermal protection layer is provided between the control unit 2 and the heating box 1 to prevent the temperature of the electric heating component 11 from being too high, thereby causing danger to the circuit of the control unit 2 .

The following describes in further detail through a specific power supply process.

The solar panel 9 converts solar energy into electrical energy and stores it in the storage battery 8 during the day; the control unit 2 controls the operation of the dual power switch 4 according to the feedback information from the voltage sensor 10 .

When the storage capacity in the storage battery 8 is sufficient, the second input terminal 7 of the dual power switch 4 is disconnected, the first input terminal 6 of the dual power switch 4 is connected, and the AC inverter 16 converts the direct current in the storage battery 8 into available alternating current, and supply power to the electric heating assembly 11.

When the voltage of the storage battery 8 fluctuates and an undervoltage phenomenon occurs, the first input terminal 6 of the dual power switch 4 is disconnected, and the second input terminal 7 of the dual power switch 4 is connected to supply power to the electric heating assembly 11 through the commercial power system. The stable operation of the heating box body 1 is guaranteed.

During operation, the control unit 2 controls the operation of the axial flow fan 14, so that cold air enters the heating box 1 from the air inlet, and exchanges heat with the heat storage body 3 in the gap to become hot air. Afterwards, hot air is discharged through the air outlet that is located on the top plate of heating box body 1.

This embodiment provides an energy storage electric heating device. The first input end of the dual power switch is connected to the new energy system, and the second input end of the dual power switch is connected to the mains system. When the output voltage of the new energy system is stable, the first input terminal of the dual power switch is connected; when the output voltage of the new energy system is unstable, the second input terminal of the dual power switch is The heating component supplies power to realize the switch between the new energy system and the mains system, so that the mains system and the new energy system complement each other to store heat energy, adapt to the intermittent power generation characteristics of the new energy system, and reduce the dependence of the heating device on the mains system. And it can use the new energy system and the low power grid at the same time to realize the rational use of energy and reduce the operating cost of the electric heating device; the voltage sensor can further detect the voltage of the new energy system to more accurately control the operation of the dual power switch. At the same time, the thermal energy is stored through the heat storage body, which has the characteristics of high heat storage density and stable operation. In the case of fluctuations in the new energy system, use the stored heat to continue heating to avoid affecting the operation of the device.

Example 2:

This embodiment is basically the same as Embodiment 1. For the sake of brevity, in the description process of this embodiment, the same technical features as Embodiment 1 will not be described, and only the differences between this embodiment and Embodiment 1 will be described:

Further, a temperature sensor is provided on the heat storage body 3 , and the temperature sensor is connected to the control unit 2 . The temperature sensor is used to detect the temperature of the heat storage body 3, and feeds back to the control unit 2, and the control unit 2 judges whether to close the dual power switch 4 according to the feedback information, so as to avoid the overload operation of the electric heating component 11 and make the temperature of the heat storage body 3 If it is too high, there will be safety hazards in severe cases.

Further, the width of the gap between adjacent heat storage bodies 3 ranges from 4 to 6 cm, and any value within this range can be selected in actual operation, such as: 4.5 cm; 4.8 cm; 5.6 cm, etc.

Furthermore, a card slot is provided on the inner wall of the heating box 1, and the heat storage body 3 is fixed in the card slot, so that the heat storage body 3 can be easily taken out and replaced.

Further, the heating box 1 is provided with a heat insulation layer, which is used to isolate the heat transfer between the inside and outside of the heating box 1 and avoid heat loss.

Further, pulleys 15 are provided outside the bottom plate 13 of the heating box 1 for easy movement. In some embodiments, the pulley 15 may be equipped with brake components to avoid unnecessary movement.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. An energy storage electric heating device, characterized in that it includes a heating box, an electric heating assembly, a dual power switch, a new energy system and a control unit; wherein, the heating box is provided with an air inlet and an air outlet, The heating box between the air inlet and the air outlet is provided with a plurality of heat storage bodies, and there is a gap between the adjacent heat storage bodies. The air duct; the electric heating assembly is connected to the heat storage body, and the heat storage body is used to store the heat of the electric heating assembly and exchange heat with the air in the air duct; the dual power switch The output end is connected to the electric heating assembly, the first input end of the dual power switch is connected to the new energy system, and the second input end of the dual power switch is connected to the mains system; the control unit is connected to the dual The power switch is connected to control the operation of the dual power switch to realize switching between the new energy system and the mains power system. 2. The energy storage electric heating device according to claim 1, wherein a fan is provided at the air inlet and/or the air outlet, and the fan is connected to the control unit. 3. The energy storage electric heating device according to claim 1, characterized in that a voltage sensor is provided on the connection circuit between the first input end of the dual power switch and the new energy system, and the voltage sensor is connected to the new energy system. connected to the control unit described above. 4. The energy storage electric heating device according to claim 3, wherein the new energy system includes a solar panel, a storage battery and an AC inverter, the solar panel is connected to the storage battery, and the storage battery passes through the The AC inverter is connected to the first input end of the dual power switch, and the voltage sensor is arranged on a connection circuit between the AC inverter and the first input end of the dual power switch. 5. The energy storage electric heating device according to claim 1, wherein a temperature sensor is provided on the heat storage body, and the temperature sensor is connected to the control unit. 6. The energy-storage electric heating device according to any one of claims 1-5, characterized in that the control unit is arranged on the heating box, and between the control unit and the heating box With heat protection layer. 7. The energy-storage electric heating device according to any one of claims 1-5, characterized in that the width of the gap between adjacent heat-storage bodies ranges from 4 to 6 cm. 8 . The energy storage electric heating device according to claim 7 , wherein a card slot is provided on the inner wall of the heating box, and the heat storage body is fixed in the card slot. 9. The energy storage electric heating device according to any one of claims 1-5, characterized in that a heat insulation layer is provided on the heating box. 10. The energy storage electric heating device according to any one of claims 1-5, characterized in that pulleys are provided outside the bottom plate of the heating box.