Heat exchange device for drying room

Abstract

The utility model relates to the technical field of heat exchange devices, and aims to solve the problems that an existing heat exchange device of a drying room is not timely in heat exchange and poor in heat exchange uniformity. The utility model provides a heat exchange device for a drying room. The heat exchange device comprises a steam generator, the drying room, a fin type heat exchanger and a plurality of dispersing assemblies. The steam generator is communicated with the fin type heat exchanger; the air inlet end of the fin type heat exchanger is communicated with the bottom of the drying room through an air extracting pump; the air outlet end of the fin type heat exchanger is communicated with the dispersing assembly; the dispersing assembly is hung in the drying room; according to the heat exchange device for the drying room, hot air is introduced from the top of the drying room, meanwhile, cold air at the bottom of the drying room is continuously pumped out through the sucking pump, negative pressure is formed at the bottom of the drying room, and then the hot air can flow to the bottom of the drying room in time after being evenly dispersed from the top. Therefore, efficient and uniform heat exchange and temperature rise of the drying room are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange devices, and in particular to a heat exchange device used in a drying room. Background Art

[0002] Finned fin heat exchangers are commonly used in drying systems of drying rooms to heat the air, and the heat transfer medium includes steam or hot water; for example, the patent with publication number CN217407743U discloses a novel heating system for a cigar drying room, and the disclosed finned fin heat exchanger for the drying room, specifically through the finned fin heat exchanger combined with an axial flow fan, absorbs the low-temperature air in the drying room from the top of the drying room, and the low-temperature air is continuously blown to the high-temperature finned fin heat exchanger, and the low-temperature air is heated to high-temperature air, and the high-temperature air is sent into the drying room from the bottom of the drying room through the air supply duct, thereby increasing the temperature in the drying room;

[0003] However, although hot air is introduced from the bottom, the fin-type heat exchanger is only set on one side of the airing room. The hot air after heat exchange has gradually cooled down on the way to the heating area away from the fin-type heat exchanger, so it is actually impossible to quickly, timely and evenly heat up the airing room. In addition, since low-temperature air usually settles automatically, the method of absorbing low-temperature air in the airing room from the top of the airing room is less effective, which in turn affects the heat exchange efficiency of the fin-type heat exchanger.

[0004] Based on the above description, there is an urgent need for a heat exchange device for a drying room that can exchange heat promptly and evenly. Utility Model Content

[0005] The utility model aims to provide a heat exchange device for a drying room, aiming to solve the technical problems of untimely heat exchange and poor heat exchange uniformity of the existing heat exchange device for the drying room.

[0006] The embodiments of the present invention are implemented by the following technical solutions:

[0007] A heat exchange device for a drying room, comprising a steam generator, a drying room, a finned heat exchanger and a plurality of dispersion components; the steam generator is connected to the finned heat exchanger; the air inlet end of the finned heat exchanger is connected to the bottom of the drying room through an exhaust pump; the air outlet end of the finned heat exchanger is connected to the dispersion component; the dispersion component is suspended inside the drying room.

[0008] Preferably, the dispersion component includes a first end, a contraction cylinder, and a second end; the air outlet end of the fin heat exchanger is connected to the top of the drying room through an air pipe; the first end is covered at one end of the air pipe passing through the drying room; the first end is connected to the second end through the contraction cylinder; the second end extends to the top of the drying rack.

[0009] Preferably, a heat insulation board is provided in the drying room; an exhaust cavity is left between the heat insulation board and the bottom inner wall of the drying room; the heat insulation board is provided with a plurality of air holes; the drying room is provided with an exhaust pipe connecting the exhaust cavity and the fin-type heat exchanger; the exhaust pump is arranged on the exhaust pipe.

[0010] Preferably, a guide plate is provided between the insulation plate and the bottom inner wall of the drying room; a condensation chamber is left between the guide plate and the bottom inner wall of the drying room; the liquid inlet end of the condensation chamber is connected with the liquid outlet end of the fin-type heat exchanger; the liquid outlet end of the condensation chamber is connected with the liquid inlet end of the steam generator; and the end of the exhaust chamber close to the guide plate is connected with a drain pipe.

[0011] Preferably, the drain pipe is communicated with the steam generator.

[0012] Preferably, the liquid inlet end of the condensation chamber and the air vents are both arranged at the lower end of the guide plate.

[0013] Preferably, the air extraction pipe is arranged at the high end of the guide plate.

[0014] Preferably, a drying device is provided between the vacuum pump and the fin-type heat exchanger.

[0015] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0016] The utility model generates steam through a steam generator, introduces the steam into a fin-type heat exchanger through an induced draft fan, further exchanges heat with cold air extracted from a drying room through the steam, thereby heating the cold air into hot air, and again disperses the hot air evenly through a dispersion component and passes it into the drying room; wherein, the hot air is passed into the drying room from the top, and at the same time, the cold air at the bottom of the drying room is continuously extracted through an exhaust pump, thereby forming a negative pressure at the bottom of the drying room, and then the hot air can flow to the bottom of the drying room in time after being evenly dispersed from the top, thereby realizing efficient and uniform heat exchange and heating of the drying room. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the device system of the utility model.

[0019] Icons: 1-steam generator, 2-drying room, 3-fin heat exchanger, 4-dispersion component, 41-first end, 42-contraction cylinder, 43-second end, 5-vacuum pump, 6-air pipe, 7-insulation board, 71-air vent, 8-vacuum pipe, 9-guide plate, 10-drain pipe, 11-drying device, 12-drying rack. DETAILED DESCRIPTION

[0020] Example 1

[0021] See also Figure 1 The utility model provides the following technical solutions: a heat exchange device for a drying room, which is suitable for uniform and efficient heating of the drying room.

[0022] Specifically, Figure 1 As shown, a heat exchange device for a drying room comprises a steam generator 1, a drying room 2, a finned heat exchanger 3 and a plurality of dispersion components 4; the steam generator 1 is connected to the finned heat exchanger 3; the air inlet end of the finned heat exchanger 3 is connected to the bottom of the drying room 2 through an exhaust pump 5; the air outlet end of the finned heat exchanger 3 is connected to the dispersion component 4; the dispersion component 4 is suspended inside the drying room 2.

[0023] Specific implementation process: Steam is generated by a steam generator 1, and the steam is introduced into a fin-type heat exchanger 3 through an induced draft fan, and the cold air extracted from the drying room 2 is further heat-exchanged by the steam, so that the cold air is heated into hot air, and the hot air is evenly dispersed again through a dispersion component 4 and passed into the drying room 2; wherein, the hot air is passed into the drying room 2 from the top, and at the same time, the cold air at the bottom of the drying room 2 is continuously extracted through an exhaust pump 5, thereby forming a negative pressure at the bottom of the drying room 2, and then the hot air can flow to the bottom of the drying room 2 in time after being dispersed from the top, thereby realizing efficient and uniform heat exchange and heating of the drying room 2.

[0024] Specifically, Figure 1 As shown, the dispersion component 4 includes a first end 41, a contraction cylinder 42, and a second end 43; the air outlet end of the fin heat exchanger 3 is connected to the top of the drying room 2 through the air supply pipe 6; the first end 41 is covered at one end of the air supply pipe 6 that passes into the drying room 2; the first end 41 is connected to the second end 43 through the contraction cylinder 42; the second end 43 extends toward the drying rack 12.

[0025] In this embodiment, the first end 41 and the second end 43 are both bucket-shaped, and the two are connected by a contraction cylinder 42. The first end 41 is convenient for accommodating and buffering hot air, and the contraction cylinder 42 is convenient for automatically pressurizing part of the hot air as the hot air in the first end 41 increases, and finally rushing out and dispersing through the second end 43. The hot air quickly rushes from the top of the drying rack 12 in the drying room 2 to the bottom, thereby quickly dispersing the hot air; wherein, a plurality of dispersion components 4 can be used and arranged on the top of the drying room 2; the air supply pipe 6 is further provided with an induced draft fan, thereby facilitating the rapid introduction of hot air into the first end 41.

[0026] Specifically, Figure 1 As shown, a heat insulation board 7 is provided in the drying room 2; an exhaust cavity is left between the heat insulation board 7 and the bottom inner wall of the drying room 2; the heat insulation board 7 is provided with a plurality of air holes 71; a exhaust pipe 8 connecting the exhaust cavity and the fin-type heat exchanger 3 is penetrated through the drying room 2; and an exhaust pump 5 is provided on the exhaust pipe 8.

[0027] In this embodiment, a heat insulation plate 7 and a guide plate 9 are provided at the bottom of the drying room 2 in sequence. The heat insulation plate 7 divides the drying room 2 into a drying chamber and an exhaust chamber. The drying chamber and the exhaust chamber are connected through a plurality of air holes 71. The cold air at the bottom of the drying chamber and the exhaust chamber is extracted by the exhaust pump 5, and then a negative pressure is formed at the bottom of the drying chamber, so that the hot air at the top of the drying chamber flows quickly to the bottom of the drying chamber after dispersion. When the hot air quickly reaches the bottom of the drying chamber, it is blocked by the heat insulation plate 7 and cannot be directly extracted through the air holes 71, thereby further extending the residence time of the hot air with residual temperature in the drying chamber, reducing heat waste and saving energy consumption.

[0028] Specifically, Figure 1 As shown, a guide plate 9 is provided between the insulation plate 7 and the bottom inner wall of the drying room 2; a condensation chamber is left between the guide plate 9 and the bottom inner wall of the drying room 2; the liquid inlet end of the condensation chamber is connected to the liquid outlet end of the fin-type heat exchanger 3; the liquid outlet end of the condensation chamber is connected to the liquid inlet end of the steam generator 1; and a drain pipe 10 is connected to one end of the air extraction chamber close to the guide plate 9. The drain pipe 10 is connected to the steam generator 1.

[0029] In this embodiment, a guide plate 9 is provided between the insulation plate 7 and the bottom inner wall of the drying room 2, and the air extraction chamber is further divided by the guide plate 9 to further form a new air extraction chamber and a condensation chamber, wherein the liquid inlet end and the air vent 71 of the condensation chamber are both provided at the lower end of the guide plate 9, and the air extraction pipe 8 is provided at the high end of the guide plate 9. Furthermore, in the process of extracting the gas through the air extraction pump 5, the water vapor carried by the cold air after drying is condensed and collected, and is discharged through the guide plate 9 and the drain pipe 10, and collected in the steam generator 1 for reuse, wherein the condensate is the condensate after heat exchange in the fin-type heat exchanger 3, and the condensate is further condensed on the water vapor in the cold air and is also recovered in the steam generator 1.

[0030] Specifically, Figure 1 As shown, a drying device 11 is provided between the vacuum pump 5 and the fin-type heat exchanger 3 .

[0031] In this embodiment, a drying device 11 (spray dryer, box dryer, etc.) is further arranged between the vacuum pump 5 and the fin-type heat exchanger 3 to dry the cold air, so as to improve the drying effect of the hot air after heat exchange and further improve the drying efficiency in the drying chamber 2.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat exchange device for a drying room, comprising a steam generator (1), a drying room (2) and a fin heat exchanger (3), characterized in that: It also includes a plurality of dispersion components (4); the steam generator (1) is connected to the fin-type heat exchanger (3); the air inlet end of the fin-type heat exchanger (3) is connected to the bottom of the drying room (2) through an exhaust pump (5); the air outlet end of the fin-type heat exchanger (3) is connected to the dispersion component (4); and the dispersion component (4) is suspended inside the drying room (2).

2. The heat exchange device for a drying room according to claim 1, characterized in that: The dispersion component (4) comprises a first end (41), a contraction cylinder (42), and a second end (43); the air outlet end of the fin heat exchanger (3) is connected to the top of the drying room (2) through an air supply pipe (6); the first end (41) is covered at one end of the air supply pipe (6) passing through the drying room (2); the first end (41) is connected to the second end (43) through the contraction cylinder (42); and the second end (43) extends toward the top of the drying rack (12).

3. The heat exchange device for a drying room according to claim 1 or 2, characterized in that: The drying room (2) is provided with a heat insulation board (7); an exhaust cavity is left between the heat insulation board (7) and the bottom inner wall of the drying room (2); the heat insulation board (7) is provided with a plurality of air holes (71); the drying room (2) is provided with an exhaust pipe (8) connecting the exhaust cavity and the fin-type heat exchanger (3); the exhaust pump (5) is arranged on the exhaust pipe (8).

4. The heat exchange device for a drying room according to claim 3, characterized in that: A guide plate (9) is provided between the heat insulation plate (7) and the bottom inner wall of the drying room (2); a condensation chamber is left between the guide plate (9) and the bottom inner wall of the drying room (2); the liquid inlet end of the condensation chamber is connected to the liquid outlet end of the fin-type heat exchanger (3); the liquid outlet end of the condensation chamber is connected to the liquid inlet end of the steam generator (1); and a drain pipe (10) is connected to one end of the exhaust chamber close to the guide plate (9).

5. The heat exchange device for a drying room according to claim 4, characterized in that: The liquid discharge pipe (10) is in communication with the steam generator (1).

6. The heat exchange device for a drying room according to claim 4, characterized in that: The liquid inlet end of the condensation chamber and the air vent (71) are both arranged at the lower end of the guide plate (9).

7. The heat exchange device for a drying room according to claim 5, characterized in that: The air extraction pipe (8) is arranged at the high end of the guide plate (9).

8. The heat exchange device for a drying room according to any one of claims 4 to 7, characterized in that: A drying device (11) is provided between the vacuum pump (5) and the fin-type heat exchanger (3).

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