阅读说明：本技术 一种电蓄能装置 (Electric energy storage device ) 是由 刘勇 于 2020-05-07 设计创作，主要内容包括：一种电蓄能装置包括换热器(1)、储热器(2)以及分别连接换热器(1)和储热器(2)的第一管路(3)和第二管路(4)；第一管路包括换热回流管(31)和储热进流管(32),换热回流管(31)与储热进流管(32)连接；第二管路包括换热进流管(41),该换热进流管连接储热器(2)与换热器(1)；换热器包括集流管(11),该集流管的两端分别与换热进流管(41)和换热回流管(31)连接,换热回流管相对于水平面向下倾斜设置。该电蓄能装置大大加快了介质的回流速度,提高了制热效率。(An electric energy storage device comprises a heat exchanger (1), a heat reservoir (2), and a first pipeline (3) and a second pipeline (4) which are respectively connected with the heat exchanger (1) and the heat reservoir (2); the first pipeline comprises a heat exchange return pipe (31) and a heat storage inflow pipe (32), and the heat exchange return pipe (31) is connected with the heat storage inflow pipe (32); the second pipeline comprises a heat exchange inlet pipe (41) which is connected with the heat reservoir (2) and the heat exchanger (1); the heat exchanger comprises a collecting pipe (11), two ends of the collecting pipe are respectively connected with a heat exchange inflow pipe (41) and a heat exchange return pipe (31), and the heat exchange return pipe is arranged downwards relative to a horizontal plane. The electric energy storage device greatly accelerates the backflow speed of the medium and improves the heating efficiency.)

1. An electrical energy storage device, characterized by: the heat storage system comprises a heat exchanger (1), a heat reservoir (2), and a first pipeline (3) and a second pipeline (4) which are respectively connected with the heat exchanger (1) and the heat reservoir (2); the first pipeline (3) comprises a heat exchange return pipe (31) and a heat storage inflow pipe (32), and the heat exchange return pipe (31) is connected with the heat storage inflow pipe (32); the second pipeline (4) comprises a heat exchange inlet pipe (41), and the heat exchange inlet pipe (41) is connected with the heat reservoir (2) and the heat exchanger (1); the heat exchanger (1) comprises a collecting pipe (11), two ends of the collecting pipe (11) are respectively connected with the heat exchange inlet pipe (41) and the heat exchange return pipe (31), and the heat exchange return pipe (31) is arranged downwards relative to a horizontal plane.

2. An electrical energy storage apparatus according to claim 1, characterized in that: the heat exchanger (1) is a fin heat exchanger.

3. An electrical energy storage apparatus according to claim 1 or 2, characterized in that: an electric heating resistor is arranged in the heat reservoir (2).

4. An electrical energy storage apparatus according to any one of claims 1-3, characterized in that: capillary tubes (33) are arranged beside the heat storage inflow tube (32).

5. An electrical energy storage apparatus according to claim 4, characterized in that: one or more valves (34) are further arranged on the first pipeline (3), and the heat exchange return pipe (31) is connected with the heat storage inflow pipe (32) through the valves (34).

6. An electrical energy storage apparatus according to claim 1, characterized in that: the inclination angle of the heat exchange return pipe (31) is larger than 0 degree and smaller than or equal to 60 degrees.

7. An electrical energy storage apparatus according to claim 6, characterized in that: the inclination angle is greater than or equal to 5 degrees and less than or equal to 45 degrees.

Technical Field

The invention relates to the technical field of electric energy storage, in particular to an electric energy storage device.

Background

Nowadays, severe problems such as global environment deterioration, climate warming, resource exhaustion and the like directly threaten the survival and development of human beings, and the development of low-carbon economy becomes a new development trend in the world. An electric heat storage device is a special device which is different from a water tank type heat storage electric boiler. The electric heat storage device adopts an integrated structure design, and combines a heating system, a heat storage system and a heat supply system together. The heat storage material is solid material, and the heat storage capacity is several times of that of common water. The system adopts a heat-taking mode of coexistence of internal circulation and external circulation, the internal circulation medium is a special liquid working medium, and the external circulation medium is water. The main principle is that the wave valley electricity is utilized to heat the heat storage medium to hundreds of degrees for storing heat at high temperature after midnight, the heat is released according to the requirement by an automatic control device when the wave valley is not generated, and the water outlet temperature of the module can be automatically, quickly and sensitively controlled according to the requirement of a user and with reference to the ambient temperature. However, the condensate liquid reflux speed of the existing electric energy storage device is slow, so that the heating efficiency of the whole system is influenced.

Disclosure of Invention

In order to solve the problems of the prior art, the invention provides an electric energy storage device for improving the heating efficiency of the whole device.

The electric energy storage device of the invention comprises: the heat exchanger, the heat reservoir and a first pipeline and a second pipeline which are respectively connected with the heat exchanger and the heat reservoir; the first pipeline comprises a heat exchange return pipe and a heat storage inflow pipe, and the heat exchange return pipe is connected with the heat storage inflow pipe; the second pipeline comprises a heat exchange inlet pipe, and the heat exchange inlet pipe is connected with the heat reservoir and the heat exchanger; the heat exchanger comprises a collecting pipe, two ends of the collecting pipe are respectively connected with the heat exchange inflow pipe and the heat exchange return pipe, and the heat exchange return pipe is arranged downwards relative to a horizontal plane.

Preferably, the heat exchanger is a fin heat exchanger.

Furthermore, an electric heating resistor is arranged in the heat reservoir.

Furthermore, a capillary tube is arranged beside the heat storage inflow tube.

Furthermore, one or more valves are further arranged on the first pipeline, and the heat exchange return pipe is connected with the heat storage inflow pipe through the valves.

Furthermore, the inclination angle of the heat exchange return pipe is greater than 0 degree and less than or equal to 60 degrees. Preferably, the inclination angle is equal to or greater than 5 degrees and equal to or less than 45 degrees.

According to the electric energy storage device, the heat exchange backflow pipe is arranged in a downward inclined mode so that the cooling liquid flows back to the interior of the heat reservoir from top to bottom under the action of gravity, the backflow speed of the medium is greatly increased, the electric energy storage device can increase the backflow speed of the medium, and therefore heating efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of an electrical energy storage apparatus according to the present invention;

FIG. 2 is a schematic diagram of another electrical energy storage apparatus according to the present invention;

fig. 3 is a schematic structural diagram of another electrical energy storage device according to the present invention.

In the figure: the heat exchange system comprises a heat exchanger 1, a collecting pipe 11, a heat storage 2, a first pipeline 3, a heat exchange return pipe 31, a heat storage inflow pipe 32, a capillary pipe 33, a valve 34, a second pipeline 4 and a heat exchange inflow pipe 41.

Detailed Description

The embodiments of the invention will be described and explained more fully hereinafter with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an electrical energy storage device according to the present invention.

As shown in fig. 1, the electric energy storage apparatus of the present invention includes a heat exchanger 1, a heat reservoir 2, and a first pipe 3 and a second pipe 4 respectively connecting the heat exchanger 1 and the heat reservoir 2. The first pipeline 3 comprises a heat exchange return pipe 31 and a heat storage inflow pipe 32, and the heat exchange return pipe 31 is connected with the heat storage inflow pipe 32. The second pipeline 4 comprises a heat exchange inlet pipe 41, and the heat exchange inlet pipe 41 is connected with the heat reservoir 2 and the heat exchanger 1. The heat exchanger 1 comprises a collecting pipe 11, two ends of the collecting pipe 11 are respectively connected with a heat exchange inlet pipe 41 and a heat exchange return pipe 31, and the heat exchange return pipe 31 is arranged downwards relative to a horizontal plane. The first and second conduits 3, 4 may be one or more conduits. The collecting pipe 11 is provided with a working medium, which may be liquid or gas, or a medium that is converted into liquid after low-temperature cooling and evaporated into gas after high-temperature heating. Preferably, the working medium is liquid at room temperature (e.g., 5-30 ℃) and evaporates to a gas after heating at high temperature (e.g., 80-100 ℃). For example, the working medium may specifically be water. The heat exchanger 1 is preferably a fin heat exchanger.

Fig. 1 also shows the operation of the electrical energy storage device according to the invention.

As shown in fig. 1, arrows in the figure indicate the flow direction of the working medium, and when heating, the heat reservoir 2 is activated, and a heating resistor (not shown) in the heat reservoir 2 is heated, so that electric energy is converted into heat energy and stored in the heat reservoir 2. Working medium in the collecting pipe 11 in the heat exchanger 1 enters the heat storage inflow pipe 32 through the heat exchange return pipe 31 and then enters the heat reservoir 2 for heat exchange, then the working medium is gradually evaporated from bottom to top into gaseous medium, and in the process, the working medium is evaporated to absorb heat to take away heat in the heat reservoir 2. Then, the gaseous medium enters the heat exchanger 1 through the heat exchange inflow pipe 41, the gaseous medium inside the heat exchanger 1 exchanges heat with the air outside the heat exchanger 1, and the gaseous medium is cooled and then flows back to the heat exchange return pipe 31, so that one cycle is completed. In the process, the air outside the heat exchanger 1 is heated and enters the room, so that the purpose of heating the room is achieved. Here, the amount of the return liquid of the heat exchange return pipe 31 connected to the heat exchanger 1 determines the amount of the evaporation in the heat reservoir 2, and affects the amount of heating.

Compared with the prior art, the heat exchange return pipe 31 is obliquely arranged, so that the cooling liquid flows back to the interior of the heat reservoir 2 from top to bottom under the action of gravity, and the return speed of the condensing medium is greatly increased. Therefore, the electric energy storage device can improve the return speed of the medium, thereby improving the heating efficiency.

Fig. 2 is a schematic structural diagram of another electric energy storage device according to the present invention. As shown in fig. 2, the difference from the first electric energy storage device is that a capillary tube 33 is further disposed beside the heat storage inflow tube 32, that is, the first pipeline 3 includes a heat exchange return tube 31, a capillary tube 33 and a heat storage inflow tube 32 which are connected in sequence. The rest are the same and are not described in detail.

The working process diagram of the electric energy storage device shown in fig. 2 is as follows: in heating, the heat reservoir 2 is activated, a heating resistor (not shown) in the heat reservoir 2 is heated, and electric energy is converted into thermal energy to be stored in the heat reservoir 2. The medium in the collecting pipe 11 in the heat exchanger 1 enters the capillary tube 33 through the heat exchange return pipe 31, so as to exchange heat with the heat reservoir 2 outside the capillary tube 33, and then is gradually evaporated into a gaseous medium from bottom to top, and in the process, the working medium evaporates and absorbs heat to take away the heat inside the heat reservoir 2. Then, the gaseous medium enters the heat exchanger 1 through the heat exchange inflow pipe 41, the gaseous medium inside the heat exchanger 1 exchanges heat with the air outside the heat exchanger 1, and after cooling, the gaseous medium flows back to the heat exchange return pipe 31, and a cycle is completed.

Fig. 3 is a schematic structural diagram of another electrical energy storage device according to the present invention. As shown in fig. 3, the difference from the second electric energy storage device is that one or more valves 34 are further disposed on the heat storage inflow pipe 32, and the rest are the same and will not be described again. Thus, by opening or closing the valve, the heat exchange return pipe 31 is connected or disconnected with the heat storage inlet pipe 32/capillary tube 33. When the heat exchange return pipe 31 is communicated with the heat storage inlet pipe 32, the return flow of the liquid medium is increased; when the heat exchange return pipe 31 is communicated with the capillary tube 33, the return amount of the liquid medium is reduced.

In the invention, the heat exchange return pipe 31 is obliquely arranged, so that the return speed of the condensing medium can be accelerated, and the gaseous medium can return to the heat exchanger without blocking the returned liquid medium. The inclination angle of the heat exchange return pipe 31 relative to the horizontal plane is more than 0 degree and less than or equal to 60 degrees. The liquid medium reflux amount and the preset angle form a linear relation, namely, the larger the preset angle is, the larger the liquid medium reflux amount is, the smaller the preset angle is, and the smaller the liquid medium reflux amount is. The heating efficiency and the liquid medium reflux quantity have a linear relation, namely, the larger the liquid medium reflux quantity is, the larger the heating efficiency is, the smaller the liquid medium reflux quantity is, and the smaller the heating efficiency is.

Preferably, the inclination angle of the heat exchange return pipe 31 with respect to the horizontal plane is greater than or equal to 5 degrees and less than or equal to 45 degrees. In the case of a too slow return of the liquid medium, the cooling medium may accumulate in the heat exchange return pipe 31 and also in the heat storage inlet pipe 32. In case the liquid medium flows back too fast, the gaseous medium cannot smoothly return to the heat exchanger 1 and thus the flowing back liquid medium is blocked. Therefore, the reflux rate of the liquid medium should be within an appropriate range. In order to avoid the above phenomenon, the inclination angle of the heat exchange return pipe 31 with respect to the horizontal plane cannot be too small or too large.

The technical solutions and preferred embodiments of the present invention have been described above in clear and in detail. It is to be understood that the described embodiments are merely preferred embodiments of the invention, rather than all embodiments, and that the invention is not limited thereto. All other embodiments, which can be obtained by modifications, equivalents and/or simple variations without inventive step, are included in the scope of the present invention by those skilled in the art.