Energy storage heat exchange device

Abstract

The present invention discloses an energy storage heat exchange device, comprising: a heat storage unit, the heat storage unit having at least one heat storage body, the heat storage body comprising magnesium oxide bricks and honeycomb iron oxide bricks; a heat exchange unit, the heat exchange unit is connected to the heat storage unit; an electric control unit, the electric control unit communicates with the heat storage unit and the heat exchange unit respectively. The heat storage energy exchange device according to the embodiment of the present invention has the advantages of uniform heat receiving and heat releasing process, high heat exchange efficiency, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler heating systems, and in particular to an energy storage and heat exchange device. Background Art

[0002] The structure of the solid electric thermal energy storage device in the related art has problems such as uneven heat absorption and heat release process, poor thermal insulation effect of the equipment, and low heat exchange efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an energy storage and heat exchange device having advantages such as uniform heat absorption and heat release process and high heat exchange efficiency.

[0004] According to an embodiment of the present invention, the energy storage and heat exchange device includes: a heat storage unit, wherein the heat storage unit has at least one heat storage body, and the heat storage body includes magnesium oxide bricks and honeycomb iron oxide bricks; a heat exchange unit, wherein the heat exchange unit is connected to the heat storage unit; and an electronic control unit, wherein the electronic control unit communicates with the heat storage unit and the heat exchange unit respectively.

[0005] The heat storage and energy conversion device according to the embodiment of the present invention has the advantages of uniform heat absorption and heat release process and high heat exchange efficiency.

[0006] In addition, the energy storage and heat exchange device according to the above embodiment of the present invention may also have the following additional technical features:

[0007] According to one embodiment of the present invention, the magnesia bricks and the honeycomb iron oxide bricks are alternately arranged into multiple layers stacked in the up and down direction, the honeycomb iron oxide bricks in the same layer are in contact with each other, the magnesia bricks in the same layer are spaced apart from each other and heating wires are provided between adjacent magnesia bricks.

[0008] According to one embodiment of the present invention, for adjacent layers of magnesia bricks and honeycomb iron oxide bricks, the magnesia bricks are located at the junction of adjacent honeycomb iron oxide bricks.

[0009] According to one embodiment of the present invention, the heat storage unit includes an air insulation layer, an insulating insulation layer and a heat preservation layer arranged in sequence from the inside to the outside, and the heat storage body is fixed in the air insulation layer by an insulating bracket.

[0010] According to one embodiment of the present invention, the insulating and heat-insulating layer is a phlogopite ceramic fiber composite board.

[0011] According to one embodiment of the present invention, the thermal insulation layer includes a thermal insulation skeleton and perlite particles filled on the thermal insulation skeleton, and the thickness of the perlite particles is greater than 400 mm.

[0012] According to one embodiment of the present invention, the insulating support is composed of insulating porcelain columns arranged in an array.

[0013] According to one embodiment of the present invention, the heat storage unit further includes a decorative layer arranged outside the heat insulation layer.

[0014] According to one embodiment of the present invention, the decorative layer includes an aluminum alloy frame and a fire-resistant insulation board and a single aluminum plate arranged on the aluminum alloy frame.

[0015] According to one embodiment of the present invention, the heat storage unit further includes a water return pipe arranged in the thermal insulation layer, and the water return pipe is connected to a heat exchanger located outside the heat storage unit.

[0016] According to one embodiment of the present invention, the heat exchange unit includes: a heat exchanger, which is a composite heat exchanger including finned carbon steel and finned copper tubes; a low-temperature air duct, which is respectively connected to the heat storage body and the heat exchanger; a high-temperature air duct, which is respectively connected to the heat storage body and the heat exchanger; and a variable frequency fan, which is arranged on the low-temperature air duct.

[0017] According to one embodiment of the present invention, the electronic control unit includes a heat storage control module for controlling the heat storage unit, a heat exchange control module for controlling the heat exchange unit, a power supply module for power supply, a remote control module and a screen centralized command system module.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 2 is a schematic structural diagram of a heat storage body of an energy storage and heat exchange device according to an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of an energy storage and heat exchange device according to an embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the structure of an energy storage and heat exchange device according to an embodiment of the present invention.

[0023] Reference numerals:

[0024] Energy storage and heat exchange device 100;

[0025] Thermal storage unit 10; thermal storage body 11; magnesium oxide brick 111; honeycomb iron oxide brick 112; heating wire 113; air insulation layer 12; insulating insulation layer 13; thermal insulation layer 14; insulating bracket 15; insulating electric porcelain column 151; decorative layer 16; return pipe 17;

[0026] Heat exchange unit 20; heat exchanger 21; low-temperature air duct 22; high-temperature air duct 23; variable frequency fan 24. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0030] Reference below Figures 1 to 3 An energy storage and heat exchange device 100 according to an embodiment of the present invention is described.

[0031] exist Figure 1 In the illustrated embodiment, the energy storage and heat exchange device 100 includes a heat storage unit 10 , a heat exchange unit 20 , and an electronic control unit.

[0032] The heat storage unit 10 includes at least one heat storage body 11, which includes magnesium oxide bricks 111 and honeycomb iron oxide bricks 112. The heat exchange unit 20 is connected to the heat storage unit 10. The electronic control unit communicates with the heat storage unit 10 and the heat exchange unit 20 respectively.

[0033] Specifically, the thermal storage unit 10 includes one or more thermal storage bodies 11, each comprising a magnesia brick 111 and a honeycomb iron oxide brick 112. The magnesia brick 111 and the honeycomb iron oxide brick 112 are arranged adjacent to each other and are insulated and independent of each other. This means that the magnesia brick 111 and the honeycomb iron oxide brick 112 operate independently of each other. The magnesia brick 111 is used to store thermal energy, and the honeycomb iron oxide brick 112 is provided with multiple holes for rapid release of thermal energy. The heat exchange unit 20 is connected to the thermal storage unit 10 and can transfer the stored thermal energy of the thermal storage unit 10 to the outside of the thermal storage unit 10. The electronic control unit is used to control the thermal storage unit 10 and the heat exchange unit 20.

[0034] According to the energy storage and heat exchange device 1000 of the embodiment of the present invention, by arranging magnesium oxide bricks 111 and honeycomb iron oxide bricks 112 in the heat storage body 11, the electronic control unit communicates with the heat storage unit 10 and the heat exchange unit 20 respectively. During the heating process of the heat storage body 11, the magnesium oxide bricks 111 slowly and evenly absorb heat energy. During the heat release process of the heat storage body 11, the honeycomb iron oxide bricks 112 quickly release the heat energy stored in the magnesium oxide bricks 111. The heating and heat release processes are independent of each other and do not interfere with each other, and the electronic control unit controls the heating and heat release of the heat storage unit 10. Therefore, the energy storage and heat exchange device 100 according to the embodiment of the present invention has the advantages of uniform heating and heat release processes and high heat exchange efficiency.

[0035] The energy storage and heat exchange device 100 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0036] In some embodiments of the present invention, Figure 1 As shown, the magnesia bricks 111 and the honeycomb iron oxide bricks 112 are alternately arranged into multiple layers stacked in the up and down direction, the honeycomb iron oxide bricks 112 in the same layer are in contact with each other, the magnesia bricks 111 in the same layer are spaced apart from each other, and heating wires 113 are provided between adjacent magnesia bricks 111.

[0037] Specifically, the magnesia bricks 111 and the honeycomb iron oxide bricks 112 are provided in multiple layers, and the multiple layers of magnesia bricks 111 and the honeycomb iron oxide bricks 112 are stacked in the up and down directions, and the magnesia bricks 111 and the honeycomb iron oxide bricks 112 are alternately arranged in layers, for example, Figure 1In the specific embodiment shown, each layer of magnesium oxide bricks 111 and honeycomb iron oxide bricks 112 are stacked on each other, the honeycomb iron oxide bricks 112 in the same layer are in contact with each other, and adjacent magnesium oxide bricks 111 in the same layer are separated from each other by heating wires 113. The heating wires 113 can continuously provide heat energy to the adjacent magnesium oxide bricks 111. As a result, the multi-layer magnesium oxide bricks 111 and honeycomb iron oxide bricks 112 have a good energy storage effect and release heat more evenly.

[0038] In one embodiment of the present invention, for adjacent layers of magnesia bricks 111 and honeycomb iron oxide bricks 112, the magnesia bricks 111 are located at the junction of adjacent honeycomb iron oxide bricks 112. For example, Figure 1 In the illustrated embodiment, the upper and lower adjacent layers of the same layer of magnesia bricks 111 are honeycomb iron oxide bricks 112 , and the upper and lower adjacent layers of the same layer of honeycomb iron oxide bricks 112 are magnesia bricks 111 .

[0039] According to one embodiment of the present invention, Figure 2 and Figure 3 As shown, the heat storage unit 10 further includes an air insulation layer 12 , an insulating insulation layer 13 and a heat preservation layer 14 arranged in sequence from the inside to the outside, and the heat storage body 11 is fixed in the air insulation layer 12 by an insulating bracket 15 .

[0040] Specifically, the air insulation layer 12 encloses the air within the air insulation layer 12. Since the enclosed air has good insulation properties, the enclosed air serves to isolate the heat storage body 11 from the outside world. The insulating heat insulation layer 13 has good chemical stability, corrosion resistance, and good electrical insulation properties, which serves to insulate the heat storage body 11 from the outside world, and further improves the insulation properties of the heat storage body 11 from the outside world. The thermal insulation layer 14 is arranged on the outside of the insulating heat insulation layer 13. The thermal insulation layer 14 uses an insulating material to further reduce the heat loss of the heat storage unit 10, and has a good insulation effect. Therefore, by arranging the air insulation layer 12, the insulating heat insulation layer 13 and the thermal insulation layer 14 in sequence from the inside to the outside, the heat storage body 11 with a high temperature of 600 degrees Celsius can be well isolated from the outside world, preventing heat energy from being dissipated to the outside of the heat storage unit 10.

[0041] Furthermore, the insulation layer is a 13-layer phlogopite ceramic fiber composite board. Phlogopite has good insulation properties, and ceramic fiber has the advantages of good thermal stability, high temperature resistance, and low thermal conductivity. Therefore, the phlogopite ceramic fiber composite board can achieve excellent insulation and heat insulation effects.

[0042] According to one embodiment of the present invention, insulation layer 14 includes an insulating framework and perlite particles filled within the framework. The perlite particles are greater than 400 mm thick. After expansion, the perlite particles exhibit low thermal conductivity and excellent chemical stability. Filling the insulating framework with the perlite particles to form insulation layer 14 further enhances the thermal insulation performance of thermal storage unit 10 and prevents heat loss from the thermal storage unit 10.

[0043] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, the insulating support 15 is composed of insulating porcelain columns 151 arranged in an array. The insulating porcelain columns 151 are arranged on the upper and lower sides of the thermal storage body 11. A plurality of insulating porcelain columns 151 are arranged in an array to form the insulating support 15. The insulating porcelain columns 151 have good compressive and insulating properties. Therefore, the plurality of insulating porcelain columns 151 can not only support the thermal storage body 11, but also insulate the thermal storage body 11 from the outside world. It should be noted that it is also possible to set only one layer of insulating porcelain columns 151 below the thermal storage body 11, which can also serve to insulate and support the thermal storage body 11.

[0044] According to one embodiment of the present invention, Figure 2 and Figure 3 As shown, the thermal storage unit 10 further includes a decorative layer 16 arranged outside the thermal insulation layer 14 .

[0045] Specifically, decorative layer 16 includes an aluminum alloy frame, a fire-resistant insulation board, and a single aluminum plate mounted on the aluminum alloy frame. The fire-resistant insulation board is mounted on the aluminum alloy frame to further insulate heat storage body 11. The single aluminum plate is mounted on the aluminum alloy frame and positioned as an outer layer of the fire-resistant insulation board. Single aluminum plates offer advantages such as low cost, a variety of color options, and excellent heat resistance. Therefore, the single aluminum plate makes energy storage and heat exchange device 100 more aesthetically pleasing, cost-effective, and fire-resistant.

[0046] According to one embodiment of the present invention, Figure 2 As shown, the thermal storage unit 10 further includes a water return pipe 17 arranged in the thermal insulation layer 14 , and the water return pipe 17 is connected to a heat exchanger 21 located outside the thermal storage unit 10 .

[0047] Specifically, the return pipe 17 includes two double-arranged pipes, which are respectively arranged on both sides of the insulating layer 13. The return pipe 17 is welded with thick-walled seamless carbon steel pipes. The return pipe 17 is connected to the heat exchanger 21 located outside the heat storage unit 10. The heat energy in the heat storage body 11 can heat the water or air in the return pipe 17. The heated water or air flows in the return pipe 17 to the heat exchanger 21 to preheat the heat exchanger 21, and at the same time, the temperature of the insulation layer 14 can be appropriately reduced.

[0048] According to one embodiment of the present invention, Figure 3 As shown, the heat exchange unit 20 includes: a heat exchanger 21 , a low-temperature air duct 22 , a high-temperature air duct 23 and a variable frequency fan 24 .

[0049] Heat exchanger 21 is a composite heat exchanger comprising carbon steel fins and copper fins. These fins are mounted on the outer wall of the heat pipe. Due to their large, tight contact surface with the heat pipe, they offer excellent and stable heat transfer performance, with minimal resistance to air flow. When steam or water flows through the steel pipes, heat is transferred to the air passing between the fins via the tightly wound carbon steel fins and copper fins, achieving both heating and cooling. Consequently, heat exchanger 21 achieves high heat exchange efficiency.

[0050] The low-temperature air duct 22 is connected to the heat storage unit 11 and the heat exchanger 21, respectively, while the high-temperature air duct 23 is connected to the heat storage unit 11 and the heat exchanger 21, respectively. Air enters the heat exchanger 21 through the low-temperature air duct 22 and is discharged through the high-temperature air duct 23 after being heated by the heat exchanger 21. The high-temperature air duct 23 extends horizontally and is inclined at the connection with the heat storage unit 10. The diameter of the high-temperature air duct 23 gradually decreases along the air outlet direction. This increases the wind pressure and the air circulation speed during heat exchange, thereby improving the heat exchange efficiency. When the fan stops running, it can prevent the high-temperature air from radiating heat to the carbon steel fins and the copper fins.

[0051] The variable frequency fan 24 is installed in the low-temperature air duct 22. The variable frequency fan 24 draws cold air from the low-temperature air duct 22 into the heat exchanger 23. The heated air is then drawn out of the high-temperature air duct 23 by the variable frequency fan 24. The variable frequency fan 24 can be a straight-axis, heat-insulating, naturally cooled, sound-insulating, low-speed centrifugal variable frequency fan.

[0052] In one embodiment of the present invention, the electronic control unit includes a heat storage control module for controlling the heat storage unit 10, a heat exchange control module for controlling the heat exchange unit 20, a power supply module for power supply, a remote control module and a screen centralized command system module.

[0053] Furthermore, the power supply module's control power is derived partly from the high-voltage thermal storage device's high-voltage sensor and charged display, and partly from an open-circuit current-type voltage converter. A portion of the 220V power is used to power the contactor and relay, while another portion of the 24V rectifier and filter (to charge the battery) powers the 24V DC relay and microcontroller module.

[0054] In other words, the control power supply refers to the low-voltage power supply that is extracted from the high-voltage porcelain bottle with a high-voltage sensor output by the high-voltage circuit breaker without the need for an external low-voltage power supply. The low-voltage power supply is reduced to the required voltage by a small transformer, rectified and filtered by a rectifier and capacitor, and stored in a battery to provide power for the control system and operating system.

[0055] Other structures and operations of the energy storage and heat exchange device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0056] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An energy storage heat exchange device, characterized in that: include: A heat storage unit, wherein the heat storage unit has at least one heat storage body, and the heat storage body comprises magnesium oxide bricks and honeycomb iron oxide bricks; A heat exchange unit, wherein the heat exchange unit is connected to the heat storage unit; An electric control unit, the electric control unit communicates with the heat storage unit and the heat exchange unit respectively; the magnesium oxide bricks and the honeycomb iron oxide bricks are alternately arranged into multiple layers stacked in an up-and-down direction, and the honeycomb iron oxide bricks in the same layer are in contact with each other; Adjacent magnesia bricks in the same layer are separated from each other by heating wires, and the heating wires are used to continuously provide heat energy to the adjacent magnesia bricks; The heat storage unit comprises an air insulation layer, an insulating insulation layer and a heat preservation layer which are arranged in sequence from the inside to the outside, and the heat storage body is fixed in the air insulation layer through an insulating bracket.

2. The energy storage heat exchange device according to claim 1, characterized in that: For adjacent layers of magnesia bricks and honeycomb iron oxide bricks, the magnesia bricks are located at the junction of adjacent honeycomb iron oxide bricks.

3. The energy storage heat exchange device according to claim 1, characterized in that: The insulating and heat-insulating layer is a phlogopite ceramic fiber composite board.

4. The energy storage heat exchange device according to claim 1, characterized in that: The thermal insulation layer comprises a thermal insulation skeleton and perlite particles filled on the thermal insulation skeleton, and the thickness of the perlite particles is greater than 400 mm.

5. The energy storage heat exchange device according to claim 1, characterized in that: The insulating support is composed of insulating electric porcelain columns arranged in an array.

6. The energy storage heat exchange device according to claim 1, characterized in that: The heat storage unit further includes a decorative layer arranged outside the heat preservation layer.

7. The energy storage heat exchange device according to claim 6, characterized in that: The decorative layer comprises an aluminum alloy frame and a fire-resistant heat-insulating plate and a single aluminum plate arranged on the aluminum alloy frame.

8. The energy storage heat exchange device according to claim 1, characterized in that: The heat storage unit further includes a water return pipe arranged in the thermal insulation layer, and the water return pipe is connected to a heat exchanger located outside the heat storage unit.

9. The energy storage heat exchange device according to claim 1, characterized in that: The heat exchange unit comprises: A heat exchanger, wherein the heat exchanger is a composite heat exchanger including finned carbon steel and finned copper tubes; A low-temperature air duct, wherein the low-temperature air duct is connected to the heat storage body and the heat exchanger respectively; A high-temperature air duct, wherein the high-temperature air duct is connected to the heat storage body and the heat exchanger respectively; A variable frequency fan is arranged on the low temperature air duct.

10. The energy storage heat exchange device according to claim 1, characterized in that: The electronic control unit includes a heat storage control module for controlling the heat storage unit, a heat exchange control module for controlling the heat exchange unit, a power supply module for power supply, a remote control module and a screen centralized command system module.

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