Konjaku flour freezing type drying machine with circulating cold storage function

Abstract

The utility model relates to the technical field of freezing type dryers, and discloses a konjaku flour freezing type dryer with a circulating cold storage function, which comprises a supporting seat, a machine shell is arranged at the top end of the supporting seat, and a mounting door is rotatably arranged on the front side of the machine shell. And a circulating cold storage mechanism for freeze-drying the konjaku flour is arranged at the position, close to the top, in the machine shell. The phase change material layer in the spiral pipe can store cold air and release the cold air synchronously, the spiral structure further enhances the cold storage effect, and cold air loss is reduced. After being transmitted through the spiral pipe, cold air enters the heat exchanger through the second connecting pipe to be preheated, so that the return air temperature is closer to the set working condition of the refrigerating unit, the difference value of heat needing to be absorbed by the compressor is reduced, power consumption is reduced, and high efficiency of circulating refrigeration is achieved. And after initial cooling is finished, the output power of the refrigerating unit is reduced, cold air is slowly released through the phase-change material layer, the freeze-drying process is continuously maintained, and energy is further saved.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze-type dryers, in particular to a konjac flour freeze-type dryer with a circulating cold storage function. Background Art

[0002] In order to maximize the preservation of heat-sensitive nutrients and active substances in konjac flour, such as dietary fiber and glucomannan, and to avoid damage by high temperatures, a special konjac flour freeze dryer is often used in the production process of konjac flour.

[0003] For example, the Chinese patent publication number CN218166506U discloses a circulating cold storage refrigeration dryer. This existing device stores the cooling capacity of the compressor through a phase change cold storage medium and recycles it in the heat exchange process of the air, which has a significant energy-saving effect and saves costs. At the same time, it will not be blocked by ice due to the large cooling capacity, and the stability of the refrigeration system is maintained. However, in actual application, this existing device still has the following significant technical disadvantages: First, the cold air transmission path is single, and there is a lack of a coordinated design of an efficient heat exchange structure, resulting in low cold transmission efficiency and prolonged drying cycle; second, konjac flour is prone to caking due to standing still during the drying process, and the existing device lacks an effective material dispersion mechanism, which further aggravates the problem of uneven drying; in addition, the existing device does not utilize the air after transmission, resulting in some heat waste, and the overall energy efficiency of the system needs to be improved. Utility Model Content

[0004] The present invention provides a konjac flour freeze dryer with a circulating cold storage function. A phase change material layer within a spiral tube stores and releases cold air simultaneously, thereby reducing cold air loss. After being transported through the spiral tube, the cold air enters a heat exchanger through a second connecting pipe for preheating, bringing the return air temperature closer to the set operating conditions of the refrigeration unit and reducing the heat difference required by the compressor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a konjac flour freeze dryer with a circulating cold storage function, comprising a support base, a shell provided on the top of the support base, a mounting door provided on the front side of the shell for rotation, and a circulating cold storage mechanism for freeze-drying konjac flour provided near the top of the shell.

[0006] The circulating cold storage mechanism includes a freeze-drying component and an auxiliary circulation component. The freeze-drying component includes at least two groups of spiral tubes arranged above the inside of the casing and a refrigeration unit arranged at the top of the casing. A first connecting tube is provided outside the refrigeration unit, and the first connecting tube is connected to the spiral tube.

[0007] The auxiliary circulation component includes a second connecting pipe arranged outside the spiral pipe, and the second connecting pipe is connected to a heat exchanger for preheating the outgoing air on a side away from the spiral pipe.

[0008] Preferably, the freeze-drying assembly includes at least two groups of mounting frames arranged at the top end of the interior of the casing, finned tubes are arranged in the mounting frames, and the spiral tubes are arranged in the finned tubes.

[0009] Preferably, the circulating cold storage mechanism includes a phase change material layer arranged in the spiral tube for storing cold, and the outer wall of the spiral tube is in contact with the inner wall of the fin tube.

[0010] Preferably, the phase change material layer is evenly distributed inside the spiral tube.

[0011] Preferably, the auxiliary circulation component further includes a third connecting pipe provided at the output end of the heat exchanger, and the third connecting pipe is communicated with the interior of the refrigeration unit.

[0012] Preferably, the housing is provided with an auxiliary drying component for shaking out the placed konjac flour, and the auxiliary drying component comprises an elastic placement plate movably arranged in the housing.

[0013] Preferably, the auxiliary drying assembly further comprises a second fixing frame fixed to the bottom end of the interior of the casing, wherein the second fixing frame is rotatably provided with two groups of push plates capable of contacting the bottom of the elastic placement plate.

[0014] Preferably, the auxiliary drying component includes a first fixed frame fixed at the bottom end of the inner part of the casing, a driving motor is arranged in the first fixed frame, the output shaft of the driving motor is externally connected to a half gear, a movable disk is arranged in the two sets of top moving plates, and a gear block meshing with the half gear is arranged outside the movable disk.

[0015] Compared with the prior art, the present invention provides a konjac flour freeze dryer with a circulating cold storage function, which has the following beneficial effects:

[0016] 1. The konjac flour freeze dryer with a circulating cold storage function has a phase change material layer in the spiral tube that can store cold air and release it synchronously. Its spiral structure further enhances the cold storage effect and reduces the loss of cold air. After the cold air is transmitted through the spiral tube, it enters the heat exchanger through the second connecting pipe for preheating, so that the return air temperature is closer to the set working condition of the refrigeration unit, reducing the heat difference that the compressor needs to absorb, thereby reducing power consumption and achieving high efficiency of circulating refrigeration. After the initial cooling is completed, the output power of the refrigeration unit is reduced, and the cold air is slowly released by the phase change material layer to continuously maintain the freeze-drying process, further saving energy.

[0017] 2. The konjac flour freeze dryer with a cyclic cold storage function has a driving motor that drives the rotation of a semi-gear. Through intermittent meshing with the external teeth of the movable plate, it drives the top plate to rotate and intermittently contact the elastic placement plate, causing it to vibrate, thereby dispersing the konjac flour and preventing caking. During the continuous cyclic refrigeration process, combined with the vibration of the elastic placement plate, it ensures that the konjac flour is evenly cooled, improves the drying efficiency and quality, and avoids problems such as local overheating or uneven drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic three-dimensional structure diagram of a konjac flour freeze dryer with a cyclic cold storage function of the present utility model; Figure 1 ;

[0019] Figure 2 FIG. is a schematic three-dimensional structure diagram of a konjac flour freeze dryer with a cyclic cold storage function of the present utility model; Figure 2 ;

[0020] Figure 3 FIG. is a schematic diagram of the internal structure of the casing of a konjac flour freeze dryer with a cyclic cold storage function of the present utility model;

[0021] Figure 4 FIG. is a schematic diagram of a partial internal structure of the casing of a konjac flour freeze dryer with a cyclic cold storage function of the present utility model;

[0022] Figure 5 FIG. is a schematic diagram of a partially sectional structure of a freeze-drying component of a konjac flour freeze dryer with a cyclic cold storage function of the present utility model;

[0023] Figure 6 FIG. is a schematic three-dimensional structure diagram of an auxiliary drying component of a konjac flour freeze dryer with a cyclic cold storage function of the present utility model;

[0024] Figure 7 FIG. is a schematic diagram of a partial three-dimensional structure of an auxiliary drying component of a konjac flour freeze dryer with a cyclic cold storage function of the present utility model.

[0025] In the figures: 1. Support base; 2. Casing; 21. Installation door; 3. Cyclic cold storage mechanism; 31. Freeze-drying component; 311. Installation frame; 312. Finned tube; 313. Spiral tube; 314. Phase change material layer; 315. First connecting pipe; 316. Refrigeration unit; 32. Auxiliary circulation component; 321. Second connecting pipe; 322. Heat exchanger; 323. Third connecting pipe; 4. Auxiliary drying component; 41. First fixing frame; 42. Driving motor; 43. Semi-gear; 44. Second fixing frame; 45. Top plate; 46. Movable plate; 47. Tooth block; 48. Elastic placement plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To further understand the features, technical means, specific purposes, and functions achieved by the present utility model, the following provides a more detailed description of the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0027] Example 1: Please refer to Figures 1-6 , the present utility model provides a technical solution: a freeze dryer for konjac powder with a circulating cold storage function, including a support base 1. A machine shell 2 is provided at the top of the support base 1. An installation door 21 is rotatably provided on the front of the machine shell 2. A circulating cold storage mechanism 3 for freeze-drying konjac powder is provided at a position near the top inside the machine shell 2.

[0028] The circulating cold storage mechanism 3 includes a freeze-drying component 31 and an auxiliary circulation component 32. The freeze-drying component 31 includes two groups of spiral tubes 313 provided above the inside of the machine shell 2 and a refrigeration unit 316 provided at the top of the machine shell 2. A first connecting pipe 315 is provided outside the refrigeration unit 316, and the first connecting pipe 315 is communicated with the spiral tube 313. Through the combined design of multiple groups of spiral tubes 313 and the refrigeration unit 316, uniform distribution and efficient transfer of cold air are realized, improving the freeze-drying efficiency.

[0029] The auxiliary circulation component 32 includes a second connecting pipe 321 provided outside the spiral tube 313. A heat exchanger 322 for preheating the outgoing air is communicated with the side of the second connecting pipe 321 away from the spiral tube 313. The heat exchanger 322 preheats the air, reducing the compressor power consumption of the refrigeration unit 316, achieving energy conservation and extending the equipment life.

[0030] Furthermore, the freeze-drying component 31 includes two groups of mounting frames 311 provided at the top inside the machine shell 2. Finned tubes 312 are provided in the mounting frames 311, and the spiral tubes 313 are provided in the finned tubes 312. The nested design of the finned tubes 312 and the spiral tubes 313 increases the heat exchange area, improves the cold air transfer efficiency, and further optimizes the freezing effect.

[0031] Furthermore, the circulating cold storage mechanism 3 includes a phase change material layer 314 for storing cold in the spiral tube 313, and the outer wall of the spiral tube 313 is in contact with the inner wall of the finned tube 312. The phase change material layer 314 stores cold air and slowly releases it when needed, maintaining a stable low-temperature environment, reducing the frequent start and stop of the refrigeration unit 316, and reducing energy consumption.

[0032] Furthermore, the phase change material layer 314 is evenly distributed inside the spiral tube 313. The evenly distributed phase change material layer 314 ensures the stability of cold air release, avoids local temperature fluctuations, and improves the freeze-drying quality.

[0033] Furthermore, the auxiliary circulation component 32 further includes a third connecting pipe 323 provided at the output end of the heat exchanger 322, and the third connecting pipe 323 is connected to the interior of the refrigeration unit 316. The third connecting pipe 323 realizes the circulation of air, reduces heat waste, and improves the overall system efficiency.

[0034] Example 2: Please refer to Figures 6-7 In combination with Example 1, it is further obtained that the housing 2 is provided with an auxiliary drying assembly 4 for shaking the placed konjac flour. The auxiliary drying assembly 4 includes an elastic placement plate 48 movably disposed in the housing 2. The elastic placement plate 48 provides stable support while allowing shaking, thereby preventing the konjac flour from clumping and improving drying uniformity.

[0035] Furthermore, the auxiliary drying assembly 4 also includes a second fixed frame 44 fixed to the bottom end of the interior of the housing 2. The second fixed frame 44 is rotatably provided with two sets of push plates 45 that can contact the bottom of the elastic placement plate 48. The push plates 45 intermittently contact the elastic placement plate 48 to achieve dispersion of the konjac flour and ensure the freeze-drying effect.

[0036] Furthermore, the auxiliary drying assembly 4 includes a first fixed frame 41 fixed to the bottom end of the interior of the casing 2, a drive motor 42 is provided in the first fixed frame 41, the output shaft of the drive motor 42 is externally connected to a half gear 43, and two sets of ejector plates 45 are provided with a movable disk 46. The movable disk 46 is externally provided with a tooth block 47 that meshes with the half gear 43. The meshing transmission of the half gear 43 and the tooth block 47 realizes the intermittent rotation of the ejector plate 45, accurately controls the shaking frequency of the konjac flour, and improves the drying efficiency.

[0037] In the actual operation process, when freeze-drying konjac powder, the operation process is as follows: Open the installation door 21, place the konjac powder on the top of the elastic placement plate 48, and then close the installation door 21. Subsequently, start the refrigeration unit 316, and the cold air enters the spiral tube 313 through the first connecting pipe 315. The phase change material layer 314 in the spiral tube 313 stores and synchronously releases the cold air, and its spiral structure enhances the cold storage effect. The cold air is transmitted to the machine shell 2 through the finned tube 312 to freeze-dry the konjac powder. After the air is transmitted through the spiral tube 313, it enters the heat exchanger 322 through the second connecting pipe 321 for preheating, reducing the compressor power consumption of the refrigeration unit 316, and realizing cyclic refrigeration. After the initial cold supply ends, reduce the output power of the refrigeration unit 316. The phase change material layer 314 slowly releases the cold air, and continuously freeze-dries the konjac powder through the finned tube 312. The processed cold air will be introduced into the heat exchanger 322 through the second connecting pipe 321, and after being processed, it will flow back to the refrigeration unit 316 for processing again to realize cyclic cold storage. At the same time, the driving motor 42 can be started to drive the rotation of the half gear 43. The half gear 43 is intermittently engaged with the tooth block 47 outside the movable plate 46, driving the rotation of the two sets of top plates 45. The top plate 45 is intermittently in contact with the elastic placement plate 48, making it vibrate, dispersing the konjac powder to optimize the drying effect.

[0038] The above embodiments only represent one or several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A konjac flour freeze dryer with a circulating cold storage function, comprising a support base (1), the top of the support base (1) is provided with a machine shell (2), and an installation door (21) is rotatably arranged on the front of the machine shell (2), characterized in that: A circulating cold storage mechanism (3) for freeze-drying konjac flour is provided near the top of the casing (2); the circulating cold storage mechanism (3) comprises a freeze-drying component (31) and an auxiliary circulation component (32); the freeze-drying component (31) comprises at least two groups of spiral tubes (313) provided above the inside of the casing (2) and a refrigeration unit (316) provided at the top of the casing (2); a first connecting tube (315) is provided outside the refrigeration unit (316), and the first connecting tube (315) is connected to the spiral tube (313); the auxiliary circulation component (32) comprises a second connecting tube (321) provided outside the spiral tube (313), and the second connecting tube (321) is connected to a heat exchanger (322) for preheating the air coming out of the spiral tube (313) on a side away from the spiral tube (313).

2. The freeze dryer for konjac powder with a cyclic cold storage function according to claim 1, wherein: The freeze drying assembly (31) comprises at least two groups of mounting frames (311) arranged at the top end inside the casing (2), finned tubes (312) are arranged in the mounting frames (311), and the spiral tubes (313) are arranged in the finned tubes (312).

3. The freeze dryer for konjac powder with a cyclic cold storage function according to claim 2, wherein: The circulating cold storage mechanism (3) comprises a phase change material layer (314) arranged in a spiral tube (313) for storing cold, and the outer wall of the spiral tube (313) is in contact with the inner wall of the fin tube (312).

4. The freeze dryer for konjac powder with a cyclic cold storage function according to claim 3, wherein: The phase change material layer (314) is evenly distributed inside the spiral tube (313).

5. A konjac flour freeze dryer with a circulating cold storage function according to claim 1, characterized in that: The auxiliary circulation component (32) further includes a third connecting pipe (323) provided at the output end of the heat exchanger (322), and the third connecting pipe (323) is in communication with the interior of the refrigeration unit (316).

6. A konjac flour freeze dryer with a cyclic cold storage function according to claim 1, characterized in that: An auxiliary drying component (4) for shaking the placed konjac flour is provided in the housing (2), and the auxiliary drying component (4) comprises an elastic placement plate (48) movably provided in the housing (2).

7. The freeze dryer for konjac powder with a cyclic cold storage function according to claim 6, characterized in that: The auxiliary drying assembly (4) further comprises a second fixing frame (44) fixed to the bottom end of the interior of the housing (2), wherein two groups of push plates (45) capable of contacting the bottom of the elastic placement plate (48) are rotatably arranged in the second fixing frame (44).

8. A konjac flour freeze dryer with a cyclic cold storage function according to claim 7, characterized in that: The auxiliary drying assembly (4) comprises a first fixing frame (41) fixed to the bottom end of the interior of the housing (2), a driving motor (42) being arranged in the first fixing frame (41), an output shaft of the driving motor (42) being externally connected to a half gear (43), a movable disk (46) being arranged in the two sets of top moving plates (45), and a tooth block (47) being arranged outside the movable disk (46) and meshing with the half gear (43).

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