阅读说明：本技术 一种双效食品干燥装置 (Double-effect food drying device ) 是由 陈建红 陶乐仁 黄理浩 于 2021-05-20 设计创作，主要内容包括：本发明涉及一种双效食品干燥装置,包括：冻干食品干燥箱、烘干食品干燥箱和中间箱,中间箱与冻干食品干燥箱间设有冻干风道,中间箱与烘干食品干燥箱间设有烘干风道；冻干食品干燥箱内设有冻干货架,冻干货架一侧处设有冻干送风机,冻干送风机进风口伸入至冻干风道内；烘干食品干燥箱内设有烘干吊架,烘干吊架设置在烘干热风机一侧处,所述烘干热风机进风口伸入至烘干风道内；中间箱内设有热泵系统。本发明的双效食品干燥装置结构简单,通过冷热风,实现了同时冻干和热干的工艺过程,减少了原先要独立冷源或者热源的问题,与传统的电热烘干相比,能效大大提高,与热泵烘干相比,提高了一倍的干燥效率,减少能源的损耗和能源的浪费。(The invention relates to a double-effect food drying device, which comprises: the device comprises a freeze-dried food drying box, a dried food drying box and an intermediate box, wherein a freeze-dried air channel is arranged between the intermediate box and the freeze-dried food drying box, and a dried air channel is arranged between the intermediate box and the dried food drying box; a freeze-drying shelf is arranged in the freeze-drying food drying box, a freeze-drying air feeder is arranged at one side of the freeze-drying shelf, and an air inlet of the freeze-drying air feeder extends into a freeze-drying air duct; a drying hanger is arranged in the drying food drying box, the drying hanger is arranged at one side of the drying air heater, and an air inlet of the drying air heater extends into the drying air duct; a heat pump system is arranged in the middle box. The double-effect food drying device is simple in structure, realizes the process of freeze drying and hot drying simultaneously by cold and hot air, reduces the problem that an original independent cold source or a heat source is needed, greatly improves the energy efficiency compared with the traditional electric heating drying, improves the drying efficiency by one time compared with the heat pump drying, and reduces the energy loss and the energy waste.)

1. A dual effect food drying apparatus comprising: the device comprises a freeze-dried food drying box, a dried food drying box and an intermediate box, wherein a freeze-dried air channel is arranged between the intermediate box and the freeze-dried food drying box, and a dried air channel is arranged between the intermediate box and the dried food drying box;

a freeze-drying shelf is arranged in the freeze-drying food drying box, a freeze-drying air feeder is arranged at one side of the freeze-drying shelf, and an air inlet of the freeze-drying air feeder extends into a freeze-drying air channel;

a drying hanger is arranged in the drying food drying box, the drying hanger is arranged at one side of the drying air heater, and an air inlet of the drying air heater extends into the drying air duct;

the middle incasement is equipped with heat pump system, heat pump system includes compressor, cold coil pipe and hot coil pipe, the one end of cold coil pipe one end and hot coil pipe is connected respectively to the compressor, interconnect between the cold coil pipe other end and hot coil pipe other end, cold coil pipe sets up in freeze-drying air duct, hot coil pipe sets up in stoving air duct.

2. The dual-purpose food drying device of claim 1, wherein a freeze-drying air return cover is arranged at the top end of the freeze-drying shelf, one end of the freeze-drying air return cover is connected with the freeze-drying food drying box, and the other end of the freeze-drying air return cover is connected with the freezing channel.

3. The dual-effect food drying device according to claim 1 or 2, wherein the heat pump system further comprises an expansion valve, two auxiliary heat exchangers and two compensation air valves, the expansion valve is arranged between the cold coil and the hot coil, an auxiliary heat exchanger is further arranged between the hot coil and the expansion valve, another auxiliary heat exchanger is arranged between the compressor and the cold coil, and the two compensation air valves are respectively arranged at positions corresponding to the auxiliary heat exchangers in the middle box.

4. The dual-purpose food drying device of claim 1, wherein the drying hanger comprises a hanger and a hook, a screw rod lifter is arranged at the top end inside the drying oven, the screw rod lifter is connected with the hanger, a plurality of mounting holes are distributed on the hanger in a staggered manner, and the hook is correspondingly arranged in the mounting holes. .

5. The dual action food drying apparatus of claim 3, wherein the hook is mounted in a mounting hole of the hanger via a height adjustable member, the height adjustable member comprises a lead screw rotatably mounted in the mounting hole, the lead screw passes through the mounting hole, a top stopper is provided on the lead screw extending out of the top end of the mounting hole, and a bottom stopper is provided on the lead screw extending out of the bottom end of the mounting hole.

6. The dual action food drying apparatus of claim 1, wherein a wind deflector is disposed at a bottom end of the freeze-dried food drying cabinet, and the wind deflector is disposed adjacent to the freeze-drying blower.

7. The dual effect food drying device of claim 6, wherein the wind screen is inclined from low to high from one side of the freeze drying fan to one side of the freeze drying shelf.

8. The dual-purpose food drying device as claimed in claim 6 or 7, wherein a freeze-drying flow equalizer is disposed at the bottom end of the freeze-drying shelf, and the freeze-drying fan is disposed at the lower portion of one side of the freeze-drying flow equalizer.

9. The dual action food drying apparatus of claim 8, wherein the freeze drying homogenizer comprises a flow homogenizing plate and a flow homogenizing hole disposed on the flow homogenizing plate;

the top end of the flow equalizing plate is a plane, the bottom end of the flow equalizing plate is arranged from the top to the bottom from the end close to the freeze-drying fan to the end far away from the freeze-drying fan, and the aperture of the flow equalizing hole is reduced from the bottom end of the flow equalizing plate to the direction of the top end.

Technical Field

The invention relates to a mechanical device, in particular to a double-effect food drying device.

Background

Food drying is usually carried out by heating with fuel, such as boiler, electric heater, etc. The freeze drying system is usually a separate refrigerating unit, and the absorbed heat is totally discharged to the outside. Therefore, the conventional drying device has a single function, the conversion efficiency is extremely low, the heat exchange energy efficiency of the boiler is less than 1, and the energy efficiency coefficient COP of the freeze-drying system is less than 2.5, so that the resource and energy are greatly wasted.

Therefore, it is necessary to develop an apparatus that can simultaneously perform drying and lyophilization.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention provides a double-effect food drying device.

The technical scheme adopted by the invention for solving the technical problems is as follows: a dual effect food drying apparatus comprising: the device comprises a freeze-dried food drying box, a dried food drying box and an intermediate box, wherein a freeze-dried air channel is arranged between the intermediate box and the freeze-dried food drying box, and a dried air channel is arranged between the intermediate box and the dried food drying box;

a freeze-drying shelf is arranged in the freeze-drying food drying box, a freeze-drying air feeder is arranged at one side of the freeze-drying shelf, and an air inlet of the freeze-drying air feeder extends into a freeze-drying air channel;

a drying hanger is arranged in the drying food drying box, the drying hanger is arranged at one side of the drying air heater, and an air inlet of the drying air heater extends into the drying air duct;

the middle incasement is equipped with heat pump system, heat pump system includes compressor, cold coil pipe and hot coil pipe, the one end of cold coil pipe one end and hot coil pipe is connected respectively to the compressor, interconnect between the cold coil pipe other end and hot coil pipe other end, cold coil pipe sets up in freeze-drying air duct, hot coil pipe sets up in stoving air duct.

In one embodiment of the invention, a freeze-drying air return cover is arranged at the top end of the freeze-drying shelf, one end of the freeze-drying air return cover is connected with the freeze-drying food drying box, and the other end of the freeze-drying air return cover is connected with the freezing channel.

In an embodiment of the present invention, the heat pump system further includes an expansion valve, two auxiliary heat exchangers, and two compensation air valves, the expansion valve is disposed between the cold coil and the hot coil, an auxiliary heat exchanger is further disposed between the hot coil and the expansion valve, another auxiliary heat exchanger is disposed between the compressor and the cold coil, and the two compensation air valves are respectively disposed at positions corresponding to the auxiliary heat exchangers in the intermediate box.

In one embodiment of the invention, the drying hanger comprises a hanger and a hook, a screw rod lifter is arranged at the top end in the drying oven for drying food, the screw rod lifter is connected with the hanger, a plurality of mounting holes are distributed on the hanger in a staggered manner, and the hook is correspondingly arranged in the mounting hole.

In one embodiment of the invention, the hook is arranged in the mounting hole on the hanging frame through the height-adjustable part, the height-adjustable part comprises an adjusting screw rod, the adjusting screw rod is rotatably arranged in the mounting hole, the adjusting screw rod penetrates through the mounting hole, a top limiting block is arranged on the adjusting screw rod extending out of the top end of the mounting hole, and a bottom limiting block is arranged on the adjusting screw rod extending out of the bottom end of the mounting hole.

In one embodiment of the invention, the bottom end of the freeze-drying food drying box is provided with a wind shield, and the wind shield is arranged close to the freeze-drying blower.

In one embodiment of the invention, the wind deflector is arranged in a manner that the wind deflector is inclined from low to high from one side of the freeze-drying fan to one side of the freeze-drying shelf.

In one embodiment of the invention, the bottom end of the freeze-drying shelf is provided with a freeze-drying flow equalizer, and the freeze-drying fan is arranged at the lower part of one side of the freeze-drying flow equalizer.

In one embodiment of the invention, the freeze-drying flow equalizer comprises a flow equalizing plate and a flow equalizing hole arranged on the flow equalizing plate;

the top end of the flow equalizing plate is a plane, the bottom end of the flow equalizing plate is arranged from the top to the bottom from the end close to the freeze-drying fan to the end far away from the freeze-drying fan, and the aperture of the flow equalizing hole is reduced from the bottom end of the flow equalizing plate to the direction of the top end.

The invention has the beneficial effects that: the double-effect food drying device is simple in structure, realizes the process of freeze drying and hot drying simultaneously by cold and hot air, reduces the problem that an original independent cold source or a heat source is needed, greatly improves the energy efficiency compared with the traditional electric heating drying, improves the drying efficiency by one time compared with the heat pump drying, and reduces the energy loss and the energy waste.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the drying hanger of the present invention;

FIG. 3 is a schematic view of the height adjustable member of the present invention;

fig. 4 is a schematic structural diagram of a freeze-drying flow equalizer according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The first embodiment is as follows: a dual effect food drying apparatus as shown in fig. 1, comprising: the drying device comprises a freeze-dried food drying box 100, a dried food drying box 200 and an intermediate box 300, wherein the intermediate box 300 is respectively connected with the freeze-dried food drying box 100 and the dried food drying box 200; the freeze-dried food drying box 100 and the dried food drying box 200 are completely separated, and the temperatures in the two air boxes are independently controlled;

a freeze-drying air duct 400 is arranged between the intermediate box 300 and the freeze-drying food drying box 100, and a drying air duct 500 is arranged between the intermediate box 300 and the dried food drying box 200;

a freeze-drying shelf 101 is arranged in the freeze-drying food drying box 100, a freeze-drying blower 102 is arranged at one side of the freeze-drying shelf 101, and an air inlet of the freeze-drying blower 102 extends into the freeze-drying air duct 400; a freeze-drying air return cover 103 is arranged at the top end of the freeze-drying shelf 101, one end of the freeze-drying air return cover 103 is connected with the freeze-drying food drying box 100, and the other end is connected with the freezing channel 400;

a drying hanger 201 is arranged in the drying food drying box 200, the drying hanger 201 is arranged at one side of the drying hot air blower 202, and an air inlet of the drying hot air blower 202 extends into the drying air duct 500;

be equipped with heat pump system in the middle box, heat pump system includes compressor 301, cold coil 302 and hot coil 303, and cold coil 302 one end and the one end of hot coil 303 are connected respectively to compressor 301, and interconnect between the cold coil 302 other end and the other end of hot coil 303, cold coil 302 sets up in freeze-drying wind channel 400, and hot coil 303 sets up in stoving wind channel 500.

The return air in the freeze-dried food drying box 100 is cooled by the cold coil 302, flows in the freeze-dried air channel 400, is sent into the freeze-dried food drying box 100 by the freeze-dried air blower 102, and enters the freeze-dried goods shelf 101 to freeze-dry the food, and enters the freeze-dried air channel 400 in the freeze-dried food drying box 100 by the freeze-dried air return cover 103 after passing through the surface of the food.

Similarly, after the return air in the dried food drying box 200 is heated by the hot coil pipe 303, the return air flows in the drying air duct 500, and is sent into the dried food drying box 200 through the drying air heater 202, and the hot air is directly sent into the drying hanging bracket 201, so that the food is dried, and after passing through the surface of the food, the hot air enters the drying air duct 500 in the dried food drying box 200 through the drying hanging bracket 201.

Through cold and hot wind, the technical process of freeze-drying and hot-drying simultaneously is realized, the problem that an original independent cold source or a heat source is needed is reduced, compared with the traditional electric heating drying, the energy efficiency is greatly improved, compared with the heat pump drying, the drying efficiency is improved by one time, and the energy loss and the energy waste are reduced.

The heat pump system further comprises an expansion valve 304, two auxiliary heat exchangers 305 and two compensation air valves 306, the expansion valve 304 is arranged between the cold coil 302 and the hot coil 303, the auxiliary heat exchanger 305 is further arranged between the hot coil 303 and the expansion valve 304, another auxiliary heat exchanger 305 is arranged between the compressor 301 and the cold coil 302, and the two compensation air valves 306 are respectively arranged in the middle box 300 at positions corresponding to the auxiliary heat exchangers 305; when the load in freeze-drying food drying cabinet 100 and/or dry food drying cabinet 200 is not uniform, compensation damper 306 and auxiliary heat exchanger 305 control are employed.

Example two: as shown in fig. 1 and 2, the drying hanger 201 includes a hanger 2011 and a hook 2012, a screw rod lifter 2013 is disposed at the top end in the drying oven 200 for drying food, the screw rod lifter 2013 is connected with a hanger 2011, and the screw rod lifter is driven to rotate forward or backward, so that the lifting screw rod 2013a is further rotated forward or backward, the hanger 2011 moves up or down along the lifting screw rod 2013a, and the position of the hanger 2011 is adjusted to meet the requirements of food with different lengths; the stagger distribution has a plurality of mounting holes 2014 on the stores pylon 2011, corresponds in the mounting hole 2014 and is equipped with couple 2012, and the couple 2012 that the stagger distributes avoids blockking each other, avoids being dried in the food that is blockked can't be in the finite time, improves the homogeneity and the uniformity that food was dried on couple 2012 everywhere, improves the stoving effect.

As shown in fig. 3, the hook 2012 is arranged in the mounting hole 2014 of the hanger through a height adjustable part, the height adjustable part comprises an adjusting belt screw rod 2015, the adjusting screw rod 2015 is rotatably arranged in the mounting hole 2014, threads are arranged in the mounting hole 2014, the adjusting screw rod 2015 penetrates through the mounting hole 2014, a top limit block 2016 is arranged on the adjusting screw rod 2015 extending out of the top end of the mounting hole 2014, and a bottom limit block 2017 is arranged on the screw rod extending out of the bottom end of the mounting hole; the length of the adjusting screw rod extending out of the mounting hole is adjusted through the rotation of the adjusting screw rod in the mounting hole, and finally the height of food on the hook is adjusted, so that the height adjusting hook is suitable for various foods with different lengths or the height of a specific hook is adjusted independently; when the adjusting screw rod 2015 rotates, the hook is driven to rotate, so that the food on the hook 2012 is further driven to rotate, the food can be conveniently dried in all directions, and the drying uniformity and the drying efficiency are improved; in order to further improve the drying efficiency and improve the mechanization of the rotation of the adjusting screw rods, each adjusting screw rod can be correspondingly connected with a driving motor, a control switch is arranged at the outer part of the device, and the rotation of a specific certain or all adjusting screw rods is realized through manual or automatic control.

Example three: as shown in fig. 1, the bottom end of the freeze-dried food drying box 100 is provided with a wind shield 600, the wind shield 600 is arranged close to the freeze-dried air blower 102, the wind shield is arranged to block cold air, the freeze-dried air blower is prevented from blowing cold air to sink, and the freeze-drying efficiency is improved. In order to further reduce the sinking cold wind, the wind screen 600 is disposed to incline from low to high from the side of the freeze-drying fan 102 to the side of the freeze-drying shelf 101, that is, the cold wind blown from the freeze-drying fan 102 is lifted up to the bottom end of the freeze-drying shelf along a slope by the wind screen.

As shown in fig. 4, a freeze-drying flow equalizer 104 is disposed at the bottom end of the freeze-drying shelf 101, and a freeze-drying fan 102 is disposed at the lower portion of one side of the freeze-drying flow equalizer 104, so that cold air is uniformly distributed through the freeze-drying flow equalizer 104, and the freeze-drying uniformity is improved; specifically, the freeze-drying flow equalizer 104 includes a flow equalizer 1041 and flow equalizing holes 1042 arranged on the flow equalizer 1041; because it is original more to sink from nearly to far away cold wind from freeze-drying fan, consequently, it is the plane to flow equalizer 1041 top, the bottom is from being close to freeze-drying fan 102 one end to keeping away from freeze-drying fan 102 one end by the height to low setting, such structure setting, it is downthehole to be convenient for get into the flow equalizer fast apart from far away local cold wind of freeze-drying fan, realize that freeze-drying flow equalizer is to effectively equalizing flow of cold wind fast, improve freeze-drying uniformity and the validity of freeze-dried food, the flow equalizer reduces to top direction aperture from flow equalizer bottom, be convenient for utilize less air outlet to increase the pressure of air outlet, improve freezing effect.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.