CN2662143Y - Dual duct air heater - Google Patents

Abstract

The utility model relates to a double-duct unit heater, which comprises a combustion furnace 2 and an outer cover 1 of a furnace body. The upper part of the outer cover 1 of the furnace body is connected with a hot air cylinder 4, and the lower part of the outer cover 1 of the furnace body is connected with an induced draft fan 10; a heat pipe 8 with liquid medium is fixed on the top wall of the combustion furnace. The utility model is characterized in that: a refractory layer 3 is arranged on the inner wall of the combustion furnace 2 at the position of a combustion chamber; a cylindrical inner wall 11 and the combustion furnace 2 form a seal interlayer in the upper part; the seal interlayer is filled with solid heat conductive medium; a pipe 5 is arranged at the upper end of the interlayer wall to cross the outer cover 1 of the furnace body; a regulating valve 6 is arranged at the end of the pipe 5; a plurality of heat conduction pipes 9 are arranged axially on the side wall of the furnace body around the interlayer wall; heat pipes 8 and the heat conduction pipes 9 are provided with a cooling fin 12. The cooperation of the two kinds of heat pipes is in a continuous form during the operation, which are complementary to each other; besides, the solid medium radiates heat gradually during the deoxidization process; therefore, the utility model can radiate heat in the method of heat conduction and radiation with high efficiency, extend the insulating time, and more meaningfully change the backward heat conductive method of mainly relying on the furnace body radiation of heat source, thus having good thermal energy utilization result and significant energy saving result.

Description

The DLC warm-air drier

Technical field the utility model relates to heating equipment, a kind of DLC warm-air drier that comprises combustion furnace.

The heating that background technology has the warm-air drier of combustion furnace generally to be used for warmhouse booth, car carwash, school, restaurant reaches in farm and sideline product processing industry as heat resource equipment.Warm-air drier of the prior art mostly adopts a kind of heat pipe or water or air heat transfer of medium.Such as, between combustion furnace and body of heater outer cover, mezzanine space being arranged, the combustion furnace roof is fixed with the heat pipe that is sealing liquid medium.The deficiency of this form is: although heat pipe has higher heat transfer efficiency, its position is far away apart from thermal source, just fully reclaims the heat in the chimney, and radiating mode mainly leans on the radiation of combustion furnace body of heater.Also have plenty of on this basis, set up several pipes in the burner hearth above the combustion chamber, pipe end passes body of heater and communicates with cavity, makes the cold air acceleration exchange that blows in interior heated air of stove and the cavity.The shortcoming of this design is: as the air heat pipe, its major part is subjected to calcination in combustion furnace, and temperature is at 200-500 ℃ during burning, because the air heat transfer efficiency is low, pipe is easy to be burnt, thereby heat-conducting mode is still based on the body of heater radiation.Thereby the heat energy utilization rate of above-mentioned design is low, and when burning weakened, temperature descended thereupon, presented the batch (-type) heat supply, and for the assurance temperature then needs continuous burning, thereby power consumption is big, and the combustion furnace activity duration is long.

The summary of the invention the purpose of this utility model provides a kind of DLC warm-air drier, has temperature and continues to discharge, and equipment life is long, and low characteristics consume energy.

The DLC warm-air drier, comprise combustion furnace 2 and body of heater outer cover 1, body of heater outer cover 1 top connects thermal chimney 4, and body of heater outer cover 1 bottom connects air-introduced machine 10, is fixed with the heat pipe 8 of liquid medium on the roof of combustion furnace 2, position, the combustion chamber inwall that it is characterized in that combustion furnace 2 has refractory masses 3, constitute airtight double wall by tubular inwall 11 and combustion furnace 2 furnace body walls at an upper portion thereof, fill solid-state heat-conducting medium therebetween, establish pipeline 5 in the double wall upper end, pass body of heater outer cover 1, pipeline 5 ends are established control valve 6; Establish a plurality of heat pipes 9 vertically on combustion furnace 2 sidewalls of double wall periphery, on heat pipe 8, the heat pipe 9 fin is arranged all.

This DLC warm-air drier of the present utility model is provided with the heat pipe of two kinds of heat-conducting mediums, and the operating temperature of liquid medium is at 50-400 ℃, and programming rate is fast; The operating temperature of solid state medium is at 140-700 ℃, the cooperation of two kinds of heat pipes, in job state, present the form of continuing, complementary short long, and solid state medium is heat release lentamente in reduction process, both can be expeditiously with heat conduction and radiation mode heat radiation, can prolong again and make heat energy utilization effective, energy-saving effect is remarkable.The design's warm-air drier performance parameter is as follows:

Specification weight output temperature area of heat-supply service power consumption coal consumption air output

mm kg ℃ M ² kw/h kg/h M ³/h

4700×1900 400 120-80 700 0.75 10 3500

Description of drawings Fig. 1 is the cutaway view of DLC warm-air drier;

Fig. 2 is the A-A view of Fig. 1;

The specific embodiment

The design's DLC warm-air drier comprises combustion furnace 2 and body of heater outer cover 1, sees Fig. 1; Combustion furnace 2 centers have chimney 7 to pass body of heater outer cover 1, on roof around the chimney 7, be fixed with the heat pipe 8 of a plurality of liquid mediums, body of heater outer cover 1 top connects thermal chimney 4, hot blast in the body of heater cavity is sent, body of heater outer cover 1 bottom connects air-introduced machine 10, send into cold air, from Fig. 2, can overlook two kinds of heat pipes 8,9 and combine with combustion furnace 2; Position, the combustion chamber inwall that it is characterized in that combustion furnace 2 has refractory masses 3, top at refractory masses 3 constitutes airtight double wall by tubular inwall 11 and combustion furnace 2 furnace body walls, fill solid-state heat-conducting medium therebetween, establish pipeline 5 in the double wall upper end, pass body of heater outer cover 1, pipeline 5 ends are established control valve 6, are used for discharging the moisture of solid state medium and replenish medium; Establish a plurality of heat pipes that communicate with interlayer 9 vertically on combustion furnace 2 sidewalls of double wall periphery, on the heat pipe 8,9 fin 12 is arranged all.

Claims (1)

1, DLC warm-air drier, comprise the thermal chimney (4) that combustion furnace (2) and body of heater outer cover (1) and the bottom air-introduced machine (10) that joins and top join, be fixed with the heat pipe (8) of liquid medium on the roof of combustion furnace (2), position, the combustion chamber inwall that it is characterized in that combustion furnace (2) has refractory masses (3), constitute airtight double wall by tubular inwall (11) and combustion furnace (2) sidewall of the furnace body at an upper portion thereof, solid-state heat-conducting medium is arranged therebetween, establish pipeline (5) in the double wall upper end, pass body of heater outer cover (1), pipeline (5) end is established control valve (6); Establish a plurality of heat pipes that communicate with interlayer (9) vertically on the combustion furnace of double wall periphery (2) sidewall, on heat pipe (8), the heat pipe (9) fin (12) is arranged all.

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