CN215412528U - Electric heat storage boiler that heat conversion efficiency is high - Google Patents

Abstract

The utility model discloses an electric heat storage boiler with high heat conversion efficiency, which comprises a heat insulation box body, a power distribution cabinet, a heating part, a heat exchange part and a heat storage part, wherein the heating part and the heat storage part are both arranged in the heat insulation box body, the power distribution cabinet is electrically connected to the heating part, the heat exchange part and the heat storage part are thermally coupled, the heating part comprises a plurality of first heating wires and a plurality of second heating wires, the heat storage part comprises two heat storage bricks, two adjacent heat storage bricks are arranged at intervals, the first heating wires extend along a first direction, the second heating wires extend along a second direction perpendicular to the first direction, the first heating wires and the second heating wires can be abutted against and contacted with the heat storage bricks, and an air inlet and an air outlet are formed in the heat insulation box body. When this application uses, first heater strip and second heater strip crisscross formation network structure each other for the inside heat of heat accumulation brick can transmit for cold air through first heater strip and second heater strip, and then improves hot conversion efficiency.

Description

Electric heat storage boiler that heat conversion efficiency is high

Technical Field

The utility model relates to the technical field of heat storage equipment, in particular to an electric heat storage boiler with high heat conversion efficiency.

Background

Under the policy of eliminating small boilers in China, heat supply mainly adopts three types, namely an air source heat pump, a gas boiler and an electric heat storage boiler. The electric heat storage boiler is widely applied in northern areas, and because the performance of the air source heat pump is obviously reduced below-20 ℃, the electric heat storage boiler is easy to frost. So the electric heat storage boiler is well used in northern cold areas. Electric heat storage boilers usually achieve heat storage by means of heat storage bricks inside them. However, in the prior art, the heat storage bricks are solid, and cold air can only exchange heat with the heat storage bricks through the surfaces of the heat storage bricks, so that the heat conversion efficiency is low. The present application therefore aims to provide an electric heat storage boiler that overcomes the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the electric heat storage boiler with high heat conversion efficiency.

The purpose of the utility model is realized by the following technical scheme: the utility model provides an electric heat storage boiler that thermal conversion efficiency is high, includes thermal-insulated box, switch board, heating portion, heat transfer portion and heat accumulation portion, the heating portion with heat accumulation portion all set up in the thermal-insulated box, the switch board electricity is connected to the heating portion, heat transfer portion with heat accumulation portion thermal coupling, the heating portion includes the first heater strip of a plurality of and a plurality of second heater strip, heat accumulation portion includes two heat accumulation bricks, and two adjacent heat accumulation bricks are arranged at interval each other, first heater strip extends along the first direction, the second heater strip along with first direction vertically second direction extends, wherein, first heater strip with the second heater strip can support to lean on to contact to the heat accumulation brick, be provided with air intake and air exit on the thermal-insulated box.

Preferably, in the case where the heat storage bricks include first and second heat storage bricks, an upper end portion of the first heat storage brick is connected to a top of the heat insulation box, and a lower end portion of the second heat storage brick is connected to a bottom of the heat insulation box.

Preferably, the heat exchange portion includes circulating fan, heat transfer water pipe and drying cabinet, the air exit with heat transfer water pipe intercommunication, the heat transfer water pipe with the drying cabinet intercommunication, two tip of circulating fan are connected to respectively the air intake with the drying cabinet.

Preferably, the upper end of the heat exchange water pipe is communicated with the cold water tank under the condition that the extending direction of the heat exchange water pipe is approximately vertical to the ground.

The utility model has the following advantages:

(1) the respective extending directions of the first heating wire and the second heating wire are perpendicular to each other to form a net structure, and heat inside the heat storage brick can be transmitted to cold air through the first heating wire and the second heating wire, so that the heat conversion efficiency is improved, and the temperature difference of hot air at the air outlet is reduced.

(2) A bent air channel is formed, the contact area of cold air and the heat storage bricks can be increased through the air channel, and the heat conversion efficiency can be improved.

(3) The cold water in the cold water tank flows downwards, and the hot air exhausted from the air outlet flows upwards, so that the contact time between the hot air and the cold water can be prolonged, and the heat conversion efficiency can be improved.

Drawings

FIG. 1 is a schematic structural view of a preferred high heat conversion efficiency electric heat storage boiler of the present invention;

fig. 2 is a schematic structural view of a preferred heating part of the present invention.

In the figure, 1-a heat insulation box body, 2-a power distribution cabinet, 3-a heating part, 4-a heat exchanging part, 5-a heat accumulating part, 3 a-a first heating wire, 3 b-a second heating wire, 5 a-a heat accumulating brick, 6-an air inlet, 7-an air outlet, 5 a-1-a first heat accumulating brick, 5 a-2-a second heat accumulating brick, 4 a-a circulating fan, 4 b-a heat exchanging water pipe, 4 c-a drying box, 8-a cold water box and 9-an air duct.

Detailed Description

The utility model will be further described with reference to the accompanying drawings, without limiting the scope of the utility model to the following:

as shown in fig. 1 and 2, the present application provides an electric heat storage boiler with high heat conversion efficiency, which includes a heat insulation box 1, a distribution cabinet 2, a heating portion 3, a heat exchanging portion, and a heat storage portion 5. Heating portion 3 and heat accumulation portion 5 all set up in thermal-insulated box 1, and switch board 2 electricity is connected to heating portion 3. The power distribution cabinet 2 is used for supplying power to the heating part 3, and when the heating part 3 is powered on to work, the heating part 5 can be heated and heated. The heat exchanging portion 4 and the heat storage portion 5 are thermally coupled, and the heat in the heat storage portion 5 can be exchanged by the heat exchanging portion 4 out of the heat insulating box 1 for heating.

The heating part 3 includes a plurality of first heating wires 3a and a plurality of second heating wires 3 b. The heating portion 5 includes two heat storage bricks 5 a. Two adjacent bricks 5a are arranged at intervals from each other. The first heater wire 3a extends in a first direction and the second heater wire 3b extends in a second direction perpendicular to the first direction. For example, as shown in fig. 2, the first direction may be a vertical direction and the second direction may be a horizontal direction. The first and second heating wires 3a and 3b can be abutted against and contacted to the heat storage bricks 5a, and then the heat generated by the first and second heating wires 3a and 3b can be directly transmitted to the heat storage bricks 5 a. The heat accumulating bricks 5a may be heat accumulating magnesite bricks. The heat insulation box body 1 is provided with an air inlet 6 and an air outlet 7. The outside cold air can be discharged into and discharged from the heat insulation box body 1 through the air inlet 6 to be heated, and the heated hot air is discharged out of the heat insulation box body 1 through the air outlet 7. In the prior art, the heat storage bricks 5a are solid, cold air can only exchange heat with the heat storage bricks 5a through the surfaces of the heat storage bricks, and the heat conversion efficiency is low. Meanwhile, the heat storage bricks 5a can present a state of low surface temperature and high internal temperature in the heat exchange process, so that the temperature of hot air exhausted from the air outlet 7 can generate large temperature difference along with the passage of time, and the heat supply is finally influenced. In this application, the respective extending direction of first heater strip 3a and second heater strip 3b is perpendicular each other, form network structure, the inside heat of heat accumulation brick 5a can transmit for the cold air through first heater strip 3a and second heater strip 3b, and then improve heat conversion efficiency and reduce the difference in temperature of hot air of air exit 7 department, it can be understood, all can be provided with the valve in air intake 6 and the air exit 7, through manual control valve, just can realize opening or closing of air intake 6 and air exit 7 and put the valve.

In the case where the heat storage bricks 5a include the first heat storage bricks 5a-1 and the second heat storage bricks 5a-2, the upper end portions of the first heat storage bricks 5a-1 are connected to the top of the insulation box 1, and the lower end portions of the second heat storage bricks 5a-2 are connected to the bottom of the insulation box 1. In this way, a curved air duct 9 can be formed, and the air duct 9 can increase the contact area between the cool air and the heat storage bricks 5a, thereby improving the heat conversion efficiency.

The heat exchanging part 4 includes a circulation fan 4a, a heat exchanging water pipe 4b, and a drying box 4 c. The air outlet 7 is communicated with the heat exchange water pipe 4 b. The heat exchange water pipe 4b is communicated with the drying box 4 c. Both end portions of the circulation fan 4a are connected to the air intake 6 and the drying box 4c, respectively. Low-temperature water flows in the heat exchange water pipe 4b in a circulating manner. After the hot air exhausted from the air outlet 7 is directly injected into the heat exchange water pipe 4b, the hot air is directly contacted with the low-temperature water for heat exchange, and then the heat exchange efficiency is higher. The cooled hot air enters the drying box 4c for dehydration treatment, and is finally injected into the heat insulation box body 1 through the circulating fan 4a for recycling, and the drying box 4c can be internally provided with a chemical drying agent to absorb moisture in the air, so that the drying purpose is achieved.

The upper end of the heat exchange water pipe 4b communicates with the cold water tank 8 under the condition that the extending direction of the heat exchange water pipe 4b is substantially perpendicular to the ground. In this way, the cold water in the cold water tank 8 flows downwards, and the hot air exhausted from the air outlet 7 flows upwards, so that the contact time between the hot air and the cold water can be prolonged, and the heat conversion efficiency can be improved.

The working principle of this application does: the power distribution cabinet 2 is turned on to supply power to the heating part 3, and the heating part 3 generates heat to heat the heat storage bricks 5 a. After the heat storage brick 5a is saturated in heat storage, the power distribution cabinet 2 is closed, and when heat supply is needed, the air outlet 7 of the air inlet 6 and the circulating fan 4a are opened, at the moment, cold air enters the heat insulator 1 from the air inlet 6, heated hot air enters the heat exchange water pipe 4b from the air outlet 7, and the water temperature in the heat exchange water pipe 4b is increased to complete heat supply to the outside.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. An electric heat storage boiler that thermal conversion efficiency is high, includes thermal-insulated box (1), switch board (2), heating portion (3), heat transfer portion (4) and heat accumulation portion (5), heating portion (3) with heat accumulation portion (5) all set up in thermal-insulated box (1), switch board (2) electricity is connected to heating portion (3), heat transfer portion (4) with heat accumulation portion (5) thermal coupling, its characterized in that: heating portion (3) include first heater strip of a plurality of (3a) and a plurality of second heater strip (3b), heat accumulation portion (5) include two heat accumulation bricks (5a), and two adjacent heat accumulation bricks (5a) arrange at intervals each other, first heater strip (3a) extend along the first direction, second heater strip (3b) along with first direction vertically second direction extends, wherein, first heater strip (3a) with second heater strip (3b) can support to lean on to contact to heat accumulation brick (5a), be provided with air intake (6) and air exit (7) on thermal-insulated box (1).

2. The electric heat storage boiler of claim 1, wherein: in the case where the heat storage bricks (5a) include first heat storage bricks (5a-1) and second heat storage bricks (5a-2), the upper end portions of the first heat storage bricks (5a-1) are connected to the top of the heat-insulating case (1), and the lower end portions of the second heat storage bricks (5a-2) are connected to the bottom of the heat-insulating case (1).

3. The electric heat storage boiler of claim 1, wherein: the heat exchanging part (4) comprises a circulating fan (4a), a heat exchanging water pipe (4b) and a drying box (4c), an air outlet (7) is communicated with the heat exchanging water pipe (4b), the heat exchanging water pipe (4b) is communicated with the drying box (4c), and two end parts of the circulating fan (4a) are respectively connected to an air inlet (6) and the drying box (4 c).

4. The electric heat storage boiler of claim 3, wherein: under the condition that the extending direction of the heat exchange water pipe (4b) is approximately vertical to the ground, the upper end of the heat exchange water pipe (4b) is communicated with the cold water tank (8).

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