Novel hot air box, tea dryer or withering machine

Abstract

The utility model relates to the field of heating equipment, in particular to a novel hot air box, a tea dryer or a withering machine. Comprising a closed box body, and a hot blast stove, a tail smoke deflector, a blower and an exhaust fan which are arranged in the box body, the hot-blast stove is horizontally arranged and comprises a flue and an air flue which exchanges heat with the flue; the tail smoke deflector comprises a plurality of lower-layer diversion pipes horizontally arranged and a plurality of upper-layer diversion pipes located above the lower-layer diversion pipes, the tails of the lower-layer diversion pipes are communicated with the tail end of the flue, the upper-layer diversion pipes are communicated with the heads of the lower-layer diversion pipes, and the exhaust fan is connected with the tail ends of the upper-layer diversion pipes and exhausts the tail ends of the upper-layer diversion pipes. The exhaust fan exhausts extracted smoke to the outside of the box body, an air inlet located above the tail smoke deflector is formed in the upper surface of the box body, and the blower is arranged at the tail of the hot blast stove, connected with the air flue and supplies air to the hot blast stove. The utility model provides a novel hot air box, a tea dryer or a withering machine. The heat energy utilization rate can be increased.

Description

Technical Field

[0001] The present application relates to the field of heating equipment, in particular to a novel hot air box, tea drying machine or withering machine. Background Art

[0002] The descriptions in this section only provide background information related to the present disclosure and do not constitute prior art. Tea leaves need to be dried during preparation. The main functions of tea leaf drying are as follows: Removing moisture: During the storage of tea leaves, moisture will cause bacteria and mold to multiply, leading to fermentation, which will give the tea leaves an unpleasant odor and taste. Drying can remove moisture from tea leaves to prevent them from spoiling and becoming moldy. Improving quality: The drying process can promote the activity of enzymes in tea leaves, making the aroma and taste of tea leaves better.

[0003] The tea dryer mainly includes a drying chamber and a hot air box for providing hot air thereto. The hot air box in the related art adopts a simple reciprocating bending arrangement structure, which easily causes uneven heat distribution, and the smoke generated by combustion is usually discharged directly without a heat recovery structure, resulting in problems such as waste of heat energy, long drying time, and unsatisfactory drying effect. Summary of the invention

[0004] In view of this, the present application provides a new type of hot air box, tea drying machine or withering machine, which can improve the utilization rate of thermal energy.

[0005] In order to achieve the above objectives, this application is implemented through the following technical solutions:

[0006] A new type of hot air box, characterized in that it includes a sealed box body, and a hot air stove, a tail smoke deflector, a blower and an exhaust fan arranged in the box body; the hot air stove is arranged horizontally, and the hot air stove includes a flue and an air duct for heat exchange with the flue; the tail smoke deflector is arranged side by side next to the hot air stove, and the tail smoke deflector includes a plurality of lower-layer guide pipes arranged horizontally, and a plurality of upper-layer guide pipes located above the lower-layer guide pipes, the tail of the lower-layer guide pipe is connected to the end of the flue, the upper-layer guide pipe is connected to the head of the lower-layer guide pipe, and the exhaust fan The fan is connected to the end of the upper guide pipe and exhausts air from it. The exhaust fan discharges the extracted smoke outside the box, so that the smoke output from the flue flows from the tail to the head of the lower guide pipe, and then flows from the head to the tail of the upper guide pipe; the upper surface of the box is provided with an air inlet located above the tail smoke deflector, and the hair dryer is arranged at the tail of the hot air stove and connected to the air duct and supplies air for it, wherein air enters the box from the air inlet, and at least part of the air is preheated on the surface of the upper guide pipe and the hot air stove, and finally the hair dryer sucks the air and blows it into the air duct.

[0007] The above-mentioned application is a new type of hot air box. By setting a tail smoke deflector beside the hot air stove in the box, the smoke generated by the hot air stove will pass through the lower guide pipe and then flow to the upper guide pipe. The air entering the box from the air inlet will pass through the upper guide pipe and the surface of the hot air stove, and be preheated by the residual heat of the upper guide pipe and the hot air stove, and finally be sucked into the hair dryer and supply air to the hot air stove. Such a structure can greatly utilize the residual heat of the tail smoke and the outer surface of the hot air stove to preheat the air, which can improve the utilization rate of heat energy and reduce the waste of heat energy.

[0008] In some embodiments, the hot blast furnace further comprises two or more smoke ducts and air ducts which are sequentially arranged layer by layer from the inside to the outside, the interior of the air duct forms the air duct, and the interior of the smoke duct forms the flue, thereby forming a mutually nested structure in which one layer of flue is covered with another layer of air duct; the outermost air duct is connected to the hair dryer, and the heads or tails of two adjacent air ducts are connected, and the air blown in by the hair dryer flows from the outer air duct to the inner air duct, and the innermost air duct is provided with an outlet for blowing air outward; the fuel is burned in the innermost smoke duct, and the outermost smoke duct is connected to the tail smoke deflector, and the heads or tails of two adjacent smoke tubes are connected, and the smoke generated by the combustion flows from the inner smoke duct to the outer smoke duct.

[0009] The present application sets the hot blast furnace as a structure in which the smoke pipe and the air pipe are nested with each other, wherein the number of the smoke pipe and the air pipe can be set to three, four or other numbers as required. In this way, each smoke duct will perform a heat exchange with the corresponding air duct, which can further reduce the heat loss, and the nested structure can reduce the volume of the overall hot blast furnace.

[0010] In some embodiments, the smoke pipe includes a first smoke pipe, a second smoke pipe and a third smoke pipe which are sequentially set from the inside to the outside, and the air duct includes a first air duct, a second air duct and a third air duct which are sequentially arranged between the two smoke pipes from the inside to the outside; the head of the first smoke pipe is provided with a fuel inlet, the tail of the first smoke pipe is connected to the tail of the second smoke pipe, the head of the second smoke pipe is connected to the head of the third air duct, and the tail of the third air duct is connected to the tail smoke deflector through a pipeline; the hair dryer is arranged on one side of the tail end of the third smoke pipe, the tail of the third air duct is connected to the hair dryer, the head of the third air duct is connected to the head of the second air duct, the tail of the second air duct is connected to the tail of the first air duct, and the air outlet is arranged at the head of the first air duct. Preferably, the present application adopts a three-wind and three-fire structure, which is more in line with the temperature requirements for tea drying.

[0011] In some embodiments, the air outlet is connected to a bell tube that opens downward and gradually expands from top to bottom, and a plurality of diverter plates are arranged in the bell tube to divert the air blown out of the air duct. The purpose of providing the bell tube is to evenly distribute the air volume at the air outlet, ensure uniform air output, and avoid uneven heating of the tea leaves, which affects the drying quality.

[0012] In some embodiments, the heads of each air duct and each smoke duct are fixed on a connecting plate, an outer cover is also provided outside the connecting plate, a first partition plate is provided inside the outer cover and the connecting plate, the first partition plate divides the internal space of the outer cover and the connecting plate into an upper space and a lower space, one end of the heads of the second smoke duct and the third smoke duct are both connected to the upper space, a heat insulation layer is provided in the lower space, and the heat insulation layer is located outside the heads of the first air duct and the first smoke duct. Each air duct and the smoke duct are fixed on the connecting plate, wherein the connecting plate plays a role in positioning during installation, and the connecting plate and the outer cover can form a channel for the second smoke duct and the third smoke duct to circulate, and a corresponding heat insulation layer can be filled outside the first air duct and the first smoke duct to avoid heat loss in the two layers with relatively high temperatures. The heat insulation layer can be made of materials such as asbestos, rock wool and silicate.

[0013] In some embodiments, the tail smoke deflector also includes a first connecting end and a second connecting end arranged at both ends of the guide pipe, a second partition plate is provided in the first connecting end, and the second partition plate divides the internal space of the first connecting end into an upper area and a lower area, the lower area is connected to the tail of the third smoke pipe, the two ends of the lower guide pipe are respectively connected to the lower area of ​​the first connecting end and the interior of the second connecting end, the two ends of the upper guide pipe are respectively connected to the upper area of ​​the first connecting end and the interior of the second connecting end, and the exhaust fan is connected to the upper area of ​​the first connecting end.

[0014] The present application also provides a tea drying machine or withering machine, which is equipped with the above-mentioned new type of hot air box, characterized in that it also includes a drying chamber, and the new type of hot air box is arranged above the drying chamber.

[0015] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0016] 1. The present application discloses a new type of hot air box. By setting a tail smoke deflector beside the hot air stove in the box, the smoke generated by the hot air stove will flow through the lower guide pipe and then flow to the upper guide pipe. The air entering the box from the air inlet will pass through the upper guide pipe and the surface of the hot air stove, and will be preheated by the residual heat of the upper guide pipe and the hot air stove, and finally be sucked in by the hair dryer and supply air to the hot air stove. Such a structure can greatly utilize the residual heat of the tail smoke and the residual heat of the outer surface of the hot air stove to preheat the air, which can improve the utilization rate of heat energy and reduce the waste of heat energy.

[0017] 2. Each flue in the present application needs to perform a heat exchange with the corresponding air duct, which can further reduce the heat loss, and the mutually nested structure can reduce the volume of the overall hot air furnace.

[0018] 3. This application provides a trumpet tube at the air outlet to ensure uniform air outlet, avoid uneven heating of the tea leaves and affect the drying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a new type of hot air box in an embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the structure of the new hot air box in the embodiment of the present application after the outer sheet metal of the box body is removed;

[0021] Figure 3 Schematic diagram of the internal structure of the new hot air box in the embodiment of the present application Figure 1 ;

[0022] Figure 4 Schematic diagram of the internal structure of the new hot air box in the embodiment of the present application Figure 2 ;

[0023] Figure 5 Schematic diagram of the hot air furnace in use according to the embodiment of the present application;

[0024] Figure 6 Schematic diagram of the use state of the tail smoke deflector in the embodiment of the present application;

[0025] Figure 7 It is a schematic diagram of the structure of an embodiment of the present application.

[0026] Explanation of reference numerals: 1. New hot air box; 2. Box body; 21. Air inlet; 3. Hot air furnace; 31. First smoke pipe; 311. Fuel inlet; 32. Second smoke pipe; 33. Third smoke pipe; 34. First air duct; 341. Air outlet; 35. Second air duct; 36. Third air duct; 37. Connecting plate; 38. Outer cover; 39. First partition plate; 391. Upper space; 392. Lower space; 310. Insulation layer; 4. Tail smoke deflector; 41. Lower guide pipe; 42. Upper guide pipe; 43. First connecting end; 431. Second partition plate; 432. Upper area; 433. Lower area; 44. Second connecting end; 5. Hair dryer; 6. Exhaust fan; 7. Trumpet tube; 71. Diverter plate; 8. Drying chamber; DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The terms used in the implementation method of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0028] See also Figures 1 to 7 The embodiment of the present application provides a tea drying machine or withering machine, which is mainly used for drying tea leaves or the like, and includes a new hot air box 1 and a drying chamber 8. The hot air box is arranged above the drying chamber 8 and provides hot air to the interior of the drying chamber 8.

[0029] The novel hot air box 1 comprises a sealed box body 2, and a hot air stove 3, a tail smoke deflector 4, a blower 5 and an exhaust fan 6 arranged in the box body 2; the hot air stove 3 is arranged horizontally, and the hot air stove 3 comprises a flue and an air duct for heat exchange with the flue; the tail smoke deflector 4 is arranged side by side beside the hot air stove 3, and the tail smoke deflector 4 comprises a plurality of lower layer guide pipes 41 arranged horizontally, and a plurality of upper layer guide pipes 42 located above the lower layer guide pipes 41, the tail of the lower layer guide pipe 41 is connected to the end of the flue, the upper layer guide pipe 42 is connected to the head of the lower layer guide pipe 41, and the exhaust fan 6 is connected to the upper layer guide pipe 42. The end of the lower-layer guide duct 42 is connected and exhaust is performed on it, and the exhaust fan 6 discharges the extracted smoke to the outside of the box body 2, so that the smoke output from the flue flows from the tail end to the head end of the lower-layer guide duct 41, and then flows from the head end to the tail end of the upper-layer guide duct 42; the upper surface of the box body 2 is provided with an air inlet 21 located above the tail smoke deflector 4, and the hair dryer 5 is arranged at the tail end of the hot air stove 3 and is connected to the air duct and supplies air for it, wherein air enters the box body 2 from the air inlet 21, and at least part of the air is preheated on the surface of the upper-layer guide duct 42 and the hot air stove 3, and finally the hair dryer 5 sucks the air and blows it into the air duct.

[0030] The hot air box is provided with a tail smoke deflector 4 beside the hot air stove 3 in the box body 2. The smoke generated by the hot air stove 3 will pass through the lower guide pipe 41 and then flow to the upper guide pipe 42. The air entering the box body 2 from the air inlet 21 will pass through the upper guide pipe 42 and the surface of the hot air stove 3, and will be preheated by the residual heat of the upper guide pipe 42 and the hot air stove 3, and finally be sucked into the blower 5 and supply air to the hot air stove 3. Such a structure can greatly utilize the residual heat of the tail smoke and the residual heat of the outer surface of the hot air stove 3 to preheat the air, which can improve the utilization rate of heat energy and reduce the waste of heat energy.

[0031] In some embodiments, the hot blast furnace 3 further includes two or more smoke ducts and air ducts which are sequentially arranged layer by layer from the inside to the outside, the interior of the air duct forms an air duct, and the interior of the smoke duct forms a flue, thereby forming a mutually nested structure in which one layer of flue is covered with another layer of air duct; the outermost air duct is connected to the hair dryer 5, and the heads or tails of two adjacent air ducts are connected, the air blown in by the hair dryer 5 flows from the outer air duct to the inner air duct, and the innermost air duct is provided with an outlet 341 for blowing air outward; the fuel is burned in the innermost smoke duct, the outermost smoke duct is connected to the tail smoke deflector 4, and the heads or tails of two adjacent smoke ducts are connected, and the smoke generated by the combustion flows from the inner smoke duct to the outer smoke duct.

[0032] The present application sets the hot blast furnace 3 as a structure in which the smoke pipe and the air pipe are nested with each other, wherein the number of the smoke pipe and the air pipe can be set to three, four or other numbers as required. In this way, each smoke duct will perform a heat exchange with the corresponding air duct, which can further reduce the heat loss, and the nested structure can reduce the volume of the whole hot blast furnace 3.

[0033] In some embodiments, the smoke pipe includes a first smoke pipe 31, a second smoke pipe 32 and a third smoke pipe 33 which are sequentially arranged from the inside to the outside, and the air pipe includes a first air pipe 34, a second air pipe 35 and a third air pipe 36 which are sequentially arranged between the two smoke pipes from the inside to the outside; the head of the first smoke pipe 31 is provided with a fuel inlet 311, the tail of the first smoke pipe 31 is connected to the tail of the second smoke pipe 32, the head of the second smoke pipe 32 is connected to the head of the third air pipe 36, and the tail of the third air pipe 36 is connected to the tail smoke deflector 4 through a pipeline; the blower 5 is arranged on one side of the tail end of the third smoke pipe 33, the tail of the third air pipe 36 is connected to the blower 5, the head of the third air pipe 36 is connected to the head of the second air pipe 35, the tail of the second air pipe 35 is connected to the tail of the first air pipe 34, and the air outlet 341 is arranged at the head of the first air pipe 34. Preferably, the present application adopts a three-wind and three-fire structure, which is more in line with the temperature requirements for tea drying.

[0034] In some embodiments, the air outlet 341 is connected to a bell tube 7 that opens downward and expands gradually from top to bottom, and a plurality of diverter plates 71 are arranged in the bell tube 7 to divert the air blown out of the air duct. The purpose of providing the bell tube 7 is to evenly distribute the air volume of the air outlet 341 to ensure uniform air discharge, thereby preventing uneven heating of the tea leaves and affecting the drying quality.

[0035] In some embodiments, the heads of each air duct and each smoke pipe are fixed on a connecting plate 37, and an outer cover 38 is also provided outside the connecting plate 37. A first partition plate 39 is provided inside the outer cover 38 and the connecting plate 37. The first partition plate 39 divides the internal space of the outer cover 38 and the connecting plate 37 into an upper space 391 and a lower space 392. One end of the heads of the second smoke pipe 32 and the third smoke pipe 33 are both connected to the upper space 391. A heat insulation layer 310 is provided in the lower space 392. The heat insulation layer 310 is located outside the heads of the first air duct 34 and the first smoke pipe 31. Each air duct and the smoke pipe are fixed on the connecting plate 37, and the connecting plate 37 plays a role in positioning during installation. The connecting plate 37 and the outer cover 38 can form a channel for the second smoke pipe 32 and the third smoke pipe 33 to circulate. Moreover, a corresponding heat insulation layer 310 can be filled outside the first air duct 34 and the first smoke pipe 31 to prevent the heat loss of the two layers with relatively high temperatures. The heat insulation layer 310 may be made of materials such as asbestos, rock wool and silicate.

[0036] In some embodiments, the tail smoke deflector 4 also includes a first connection end 43 and a second connection end 44 arranged at both ends of the guide pipe, and a second partition plate 431 is provided in the first connection end 43, and the second partition plate 431 divides the internal space of the first connection end 43 into an upper area 432 and a lower area 433, and the lower area 433 is connected to the tail of the third smoke pipe 33. The two ends of the lower guide pipe 41 are respectively connected to the lower area 433 of the first connection end 43 and the interior of the second connection end 44, and the two ends of the upper guide pipe 42 are respectively connected to the upper area 432 of the first connection end 43 and the interior of the second connection end 44, and the exhaust fan 6 is connected to the upper area 432 of the first connection end 43.

[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] The terms "first," "second," "third," "fourth," etc., if any, are used to distinguish between similar objects and not necessarily to describe a particular sequence or order.

[0039] In the description of the embodiments of the present application, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A new type of hot air box, characterized by: The invention comprises a sealed box body, and a hot air furnace, a tail smoke deflector, a blower and an exhaust fan arranged in the box body; the hot air furnace is arranged horizontally, and the hot air furnace comprises a flue and an air duct for heat exchange with the flue; the tail smoke deflector is arranged side by side beside the hot air furnace, and the tail smoke deflector comprises a plurality of lower-layer guide pipes arranged horizontally, and a plurality of upper-layer guide pipes located above the lower-layer guide pipes, the tail of the lower-layer guide pipe is connected to the end of the flue, the upper-layer guide pipe is connected to the head of the lower-layer guide pipe, and the exhaust fan is connected to the upper-layer guide pipe. The ends of the tubes are connected and exhaust is performed on them, and the exhaust fan discharges the extracted smoke outside the box, so that the smoke output from the flue flows from the tail end to the head end of the lower guide tube, and then flows from the head end to the tail end of the upper guide tube; the upper surface of the box is provided with an air inlet located above the tail smoke deflector, and the hair dryer is arranged at the tail end of the hot air stove and connected to the air duct and supplies air for it, wherein air enters the box from the air inlet, and at least part of the air is preheated on the surface of the upper guide tube and the hot air stove, and finally the hair dryer sucks the air and blows it into the air duct.

2. A new type of hot air box according to claim 1, characterized in that: The hot blast furnace also includes more than two smoke pipes and air ducts which are sequentially arranged layer by layer from the inside to the outside, the interior of the air duct forms the air duct, and the interior of the smoke pipe forms the flue, thereby forming a mutually nested structure in which one layer of flue is covered with another layer of air duct; the outermost air duct is connected to the blower, and the heads or tails of two adjacent air ducts are connected, and the air blown in by the blower flows from the outer air duct to the inner air duct, and the innermost air duct is provided with an air outlet for blowing air outwards; the fuel is burned in the innermost smoke pipe, and the outermost smoke pipe is connected to the tail smoke deflector, and the heads or tails of two adjacent smoke pipes are connected, and the smoke generated by the combustion flows from the inner smoke pipe to the outer smoke pipe.

3. A new type of hot air box according to claim 2, characterized in that: The smoke tube includes a first smoke tube, a second smoke tube and a third smoke tube which are sequentially arranged in layers from the inside to the outside, and the air duct includes a first air duct, a second air duct and a third air duct which are sequentially arranged between the two smoke tubes from the inside to the outside; a fuel inlet is provided at the head of the first smoke tube, the tail of the first smoke tube is connected to the tail of the second smoke tube, the head of the second smoke tube is connected to the head of the third air duct, and the tail of the third air duct is connected to the tail smoke deflector through a pipeline; the hair dryer is arranged on one side of the tail end of the third smoke tube, the tail of the third air duct is connected to the hair dryer, the head of the third air duct is connected to the head of the second air duct, the tail of the second air duct is connected to the tail of the first air duct, and the air outlet is arranged at the head of the first air duct.

4. A new type of hot air box according to claim 2, characterized in that: The air outlet is connected to a bell tube which opens downward and expands gradually from top to bottom. A plurality of diverter plates are arranged in the bell tube for diverting the air blown out from the air duct.

5. A new type of hot air box according to claim 3, characterized in that: The heads of each air duct and each smoke duct are fixed on a connecting plate, an outer cover is provided outside the connecting plate, a first partition plate is provided inside the outer cover and the connecting plate, the first partition plate divides the internal space of the outer cover and the connecting plate into an upper space and a lower space, one end of the heads of the second smoke duct and the third smoke duct are connected to the upper space, an insulation layer is provided in the lower space, and the insulation layer is located outside the heads of the first air duct and the first smoke duct.

6. A new type of hot air box according to claim 3, characterized in that: The tail smoke deflector also includes a first connecting end and a second connecting end arranged at both ends of the guide pipe, a second partition plate is arranged in the first connecting end, and the second partition plate divides the internal space of the first connecting end into an upper area and a lower area, the lower area is connected to the tail of the third smoke pipe, the two ends of the lower guide pipe are respectively connected to the lower area of ​​the first connecting end and the interior of the second connecting end, the two ends of the upper guide pipe are respectively connected to the upper area of ​​the first connecting end and the interior of the second connecting end, and the exhaust fan is connected to the upper area of ​​the first connecting end.

7. A tea drying machine or withering machine, equipped with a new type of hot air box according to any one of claims 1 to 6, characterized in that: The utility model also comprises a drying chamber, and the novel hot air box is arranged above the drying chamber.

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