Food freeze-drying device

Abstract

The utility model discloses a food freeze-drying device, which relates to the field of food processing machinery, and comprises a box body, a refrigeration mechanism and a freeze-drying barrel arranged in the box body, the freeze-drying barrel is provided with a freeze-drying cavity, an inner barrel and a thermal insulation layer attached to the side wall of the inner barrel, and a material placing assembly used for placing materials to be processed is arranged in the freeze-drying cavity. The refrigerating mechanism comprises a cold trap arranged between the side wall of the inner barrel and the heat preservation layer, and the cold trap comprises a refrigerating pipe arranged around the side wall of the inner barrel. Due to the fact that the cold trap is arranged between the inner barrel and the heat preservation layer, the cold trap and the freeze-drying cavity are integrally arranged, during freeze-drying, moisture sublimated by materials can be captured by the cold trap and condensed on the inner wall of the freeze-drying cavity, freeze-drying dehydration is achieved, due to the fact that the cold trap and the freeze-drying cavity are integrally arranged, set functions can be achieved, the device can be simplified, and the device is high in integration degree, small in size and convenient to use. And the modern household space requirement is met, so that the household use requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of food processing machinery, and in particular to a food freeze-drying device. Background Technology

[0002] Freeze-drying equipment is a device that removes moisture from materials through low-temperature freezing and vacuum sublimation. It directly converts the moisture in food from a solid state to a gaseous state for drying. It is widely favored by users because it can preserve the nutrition, flavor and structure of food to the greatest extent.

[0003] Most existing freeze-drying devices are used in industry. Because the cold trap and freeze-drying chamber are set up separately, their refrigeration system is more complex. The separate cold trap and freeze-drying chamber make the freeze-drying device larger in size, which cannot meet the needs of household use. Utility Model Content

[0004] This invention provides a food freeze-drying device to overcome the limitations of existing freeze-drying devices, which have separate cold traps and freeze-drying chambers, resulting in complex and bulky freezing systems that cannot meet the needs of home use.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A food freeze-drying apparatus includes a housing, a refrigeration mechanism, and a freeze-drying barrel disposed within the housing. The freeze-drying barrel has a freeze-drying chamber, an inner barrel, and an insulation layer disposed against the side wall of the inner barrel. The freeze-drying chamber is provided with a material placement assembly for holding the material to be processed. The refrigeration mechanism includes a cold trap disposed between the side wall of the inner barrel and the insulation layer. The cold trap includes a refrigeration pipe disposed around the side wall of the inner barrel.

[0007] As described above, the food freeze-drying apparatus further includes a condenser, a compressor, and a dryer. One end of the refrigeration pipe is connected to a suction pipe, which is connected to the suction port of the compressor. The discharge port of the compressor is connected to an exhaust pipe, the other end of which is connected to the condenser. The other end of the condenser is connected to the dryer, and the other end of the dryer is connected to the end of the refrigeration pipe away from the suction pipe.

[0008] As described above, in the food freeze-drying apparatus, the freeze-drying chamber is connected to a vacuum device, which includes a vacuum pump and a vacuum tube. One end of the vacuum tube is connected to the freeze-drying chamber, and the other end is connected to the vacuum pump.

[0009] As described above, the food freeze-drying apparatus further includes a vacuum gauge that communicates with the freeze-drying chamber and is used to detect the vacuum level inside the freeze-drying chamber. The vacuum gauge includes a control module, which includes a relay module that is electrically connected to the vacuum gauge and the vacuum pump.

[0010] In the food freeze-drying apparatus described above, the feeding assembly includes a feeding rack, a tray, and a support plate disposed on the feeding rack, the support plate being used to support the tray.

[0011] In the food freeze-drying apparatus described above, a heating component is provided at the bottom of the tray, and the heating component is used to heat the material to be processed.

[0012] In the food freeze-drying apparatus described above, the freeze-drying barrel is provided with a drain pipe, which is connected to the freeze-drying chamber.

[0013] The food freeze-drying device described above includes a control module, which includes a relay module, a control panel, and a main controller. The output terminal of the control panel is electrically connected to the input terminal of the main controller, the output terminal of the main controller is electrically connected to the input terminal of the relay module, and the output terminal of the relay module is electrically connected to the input terminals of the heating component and the refrigeration mechanism, respectively.

[0014] As described above, the freeze-drying device for food has a sealing door and a discharge port communicating with the freeze-drying chamber. The freeze-drying barrel is equipped with a sealing ring. When the sealing door abuts against the sealing ring, the sealing door is used to seal the freeze-drying chamber.

[0015] The food freeze-drying apparatus described above further includes a cooling mechanism aligned with the condenser, wherein the refrigeration mechanism also includes a cooling fan.

[0016] Compared with existing technologies, the beneficial effects of this technical solution are as follows:

[0017] 1. Since the cold trap is located between the inner barrel and the insulation layer, and includes refrigeration pipes arranged around the side wall of the inner barrel, the cold trap and the freeze-drying chamber are integrated. During freeze-drying, the water sublimated by the material is captured by the cold trap and condensed on the inner wall of the freeze-drying chamber, thereby achieving freeze-drying dehydration. The integrated design of the cold trap and the freeze-drying chamber can not only achieve the intended function, but also simplify the device, resulting in a high degree of integration and a small size, which meets the needs of modern home space and thus satisfies the needs of family use.

[0018] 2. By pre-storing the freeze-drying formula in the control module, users only need to select specific freeze-drying parameters to complete the process, and can easily operate without requiring professional freeze-drying knowledge.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the internal structure of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the internal structure of this utility model. Figure 2 ;

[0023] Figure 3 This is an exploded structural diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the material placement component structure of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 5 The freeze-drying device shown includes a housing 1, a refrigeration mechanism 2, and a freeze-drying barrel 3 disposed within the housing 1. The freeze-drying barrel 3 is provided with a freeze-drying chamber 31, an inner barrel 32, and an insulation layer 33 disposed against the side wall of the inner barrel 32. The freeze-drying chamber 31 is provided with a material placement assembly 5 for holding the material to be processed. The refrigeration mechanism 2 includes a cold trap 23 disposed between the side wall of the inner barrel 32 and the insulation layer 33. The cold trap 23 includes a refrigeration pipe 231 disposed around the side wall of the inner barrel 32. Since the cold trap 23 is located between the inner barrel 23 and the insulation layer 33, and the cold trap 23 includes a refrigeration pipe 231 arranged around the side wall of the inner barrel 32, the cold trap 23 and the freeze-drying chamber 31 are integrated. During freeze-drying, the sublimated water of the material is captured by the cold trap 23 and condensed on the inner wall of the freeze-drying chamber 31, thereby achieving freeze-drying dehydration. The integrated arrangement of the cold trap 23 and the freeze-drying chamber 31 can not only achieve the intended function, but also simplify the device, making the device highly integrated and small in size, which meets the needs of modern home space and thus meets the needs of family use.

[0028] Furthermore, the housing 1 is provided with a sealing door 11 that seals the freeze-drying chamber 31 and a discharge port that communicates with the freeze-drying chamber 31. The freeze-drying barrel 3 is also provided with a sealing ring 34 corresponding to the discharge port. When the freeze-drying chamber 31 is closed, the sealing door 11 is operated to abut against the sealing ring 34, which makes the sealing performance better and makes it more convenient to place materials.

[0029] As a specific implementation and not a limitation, to form a complete refrigeration system, the refrigeration mechanism 2 further includes a condenser 21, a compressor 22, and a dryer 25. One end of the refrigeration pipe 231 is connected to a suction pipe 232, which communicates with the suction port of the compressor 22. The discharge port of the compressor 22 is connected to a discharge pipe 233, the other end of which communicates with the condenser 21. The other end of the condenser 21 is connected to the dryer 25, and the other end of the dryer 25 is connected to the end of the refrigeration pipe 231 away from the suction pipe 232. The compressor 2 compresses the low-temperature, low-pressure refrigerant gas in the cold trap 23 through the suction pipe 232, and then discharges it as high-temperature, high-pressure gas into the condenser 21. The condenser cools the high-temperature, high-pressure gaseous refrigerant into a high-pressure refrigerant liquid, while releasing heat to the outside. The high-pressure refrigerant liquid is then transported back to the cold trap 23, thus forming a cycle and completing the refrigeration system. The refrigeration mechanism 2 also includes a cooling fan 24 aligned with the condenser 21, which drives the cooling fan 24 to dissipate heat from the condenser 21.

[0030] Furthermore, to ensure a vacuum environment during the freeze-drying process, the freeze-drying chamber 3 is connected to a vacuum device 7. The vacuum device 7 includes a vacuum pump 71 and a vacuum pipe 73. One end of the vacuum pipe 73 is connected to the freeze-drying chamber 31, and the other end is connected to the vacuum pump 71. Activating the vacuum pump 71 draws air out of the freeze-drying chamber 31 through the vacuum pipe 73, thereby creating a vacuum environment and allowing the material to be freeze-dried under vacuum.

[0031] As a specific implementation and not a limitation, in order to detect the vacuum level within the freeze-drying chamber 31, the vacuum device 7 further includes a vacuum gauge 72 connected to the freeze-drying chamber 31 and used for detecting the vacuum level within the freeze-drying chamber 31. The vacuum device 72 includes a control module 8, which includes a relay module 81. The relay module 81 is electrically connected to the vacuum gauge 72 and the vacuum pump 71, respectively. This vacuum gauge 72 is a thermocouple vacuum gauge, which indirectly reflects the vacuum level by measuring the change in the thermal conductivity of the gas within the freeze-drying chamber 31. This achieves real-time detection of the vacuum level within the freeze-drying chamber 31.

[0032] Furthermore, for material placement, the material placement assembly 5 includes a material placement rack 51, a tray 52, and a support plate 53 disposed on the material placement rack 51. The support plate 53 supports the tray 52. ​​Multiple support plates 53 are arranged on the material placement rack 51, forming multiple layers. Each support plate 53 supports a tray 52, which can be removed from the material placement rack 51 for convenient material placement. Additionally, the top and bottom of the material placement rack 51 are equipped with heat insulation plates 54 for heat preservation, resulting in faster and more uniform heating of the material in the tray 52 and reduced energy loss.

[0033] As a specific implementation and not a limitation, in order to heat the material, the bottom of the tray 53 is provided with a heating component 6, which is used to heat the material to be processed. The heating component 6 is a heating sticker with a temperature sensing function. The heating sticker can be pasted on the tray 53. In addition, the temperature sensing function of the heating sticker can provide temperature feedback, so as to heat the material more accurately.

[0034] Furthermore, the freeze-drying chamber 3 is equipped with a drain pipe 26, which is connected to the freeze-drying chamber 31. After drying, a large amount of ice has condensed on the inner wall of the freeze-drying chamber 31. After being heated by the heating component 6, the ice melts, and the melted water is discharged from the drain pipe 26, thereby removing the ice. A ball valve is also provided at the end of the drain pipe 26 away from the freeze-drying chamber 31. When it is necessary to drain the liquid in the freeze-drying chamber 31, simply open the ball valve, and the liquid can be discharged along the drain pipe 26.

[0035] As a specific implementation and not a limitation, the device includes a control module 8, which comprises a relay module 81, a control panel 82, and a main controller 83. The output of the control panel 82 is electrically connected to the input of the main controller 83, and the output of the main controller 83 is electrically connected to the input of the relay module 81. The output of the relay module 81 is electrically connected to the inputs of the heating component 6 and the refrigeration mechanism 2, respectively. By inputting preset freeze-drying parameters through the control panel 82, the main controller 83 controls the freeze-drying device to operate according to the predetermined parameters. The relay module 81 has multiple relays, which are electrically connected to multiple corresponding heating components 6, thereby controlling the heating components 6 to perform heating. Because the relay module 81 is electrically connected to the vacuum gauge 72, vacuum pump 71, heating mechanism 6, and refrigeration mechanism 2, the electrical system of the freeze-drying device is highly integrated, the control is more reliable, and the size of the freeze-drying device is significantly reduced.

[0036] The specific working principle of this utility model is as follows:

[0037] When freeze-drying food is required, take out tray 5, place the material evenly in tray 5, place the tray on the pallet, close the sealing door 11, and then select appropriate parameters on the control panel 82 to freeze-dry. After starting the freeze dryer, the freeze-drying chamber 31 is cooled by the cold trap 23 on the refrigeration mechanism 2, which causes the material to freeze rapidly. The vacuum device 7 is used to evacuate the vacuum. After the vacuum freezing is completed, the heating component 6 is used to heat the material, which causes the water in the material to directly change from solid to gaseous. The gaseous water is captured by the cold trap 23 and condensed into ice that adheres to the inner wall of the freeze-drying chamber 31, thereby removing the water in the material and achieving the freeze-drying effect.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A food freeze-drying apparatus, comprising a housing (1), a refrigeration mechanism (2), and a freeze-drying drum (3) disposed within the housing (1), characterized in that, The freeze-drying barrel (3) is provided with a freeze-drying chamber (31), an inner barrel (32) and a heat insulation layer (33) attached to the side wall of the inner barrel (32). The freeze-drying chamber (31) is provided with a material placement component (5) for holding the material to be processed. The refrigeration mechanism (2) includes a cold trap (23) located between the side wall of the inner barrel (32) and the heat insulation layer (33). The cold trap (23) includes a refrigeration pipe (231) arranged around the side wall of the inner barrel (32).

2. The food freeze-drying apparatus according to claim 1, characterized in that, The refrigeration mechanism (2) further includes a condenser (21), a compressor (22) and a dryer (25). One end of the refrigeration pipe (231) is connected to a suction pipe (232), which is connected to the suction port of the compressor (22). The exhaust port of the compressor (22) is connected to an exhaust pipe (233), which is connected to the condenser (21) at the other end. The other end of the condenser (21) is connected to the dryer (25), and the other end of the dryer (25) is connected to the end of the refrigeration pipe (231) away from the suction pipe (232).

3. The food freeze-drying apparatus according to claim 1, characterized in that, The freeze-drying chamber (3) is connected to a vacuum device (7), which includes a vacuum pump (71) and a vacuum tube (73). One end of the vacuum tube (73) is connected to the freeze-drying chamber (31), and the other end is connected to the vacuum pump (71).

4. The food freeze-drying apparatus according to claim 3, characterized in that, The vacuum device (7) further includes a vacuum gauge (72) that communicates with the freeze-drying chamber (31) and is used to detect the vacuum level in the freeze-drying chamber (31), and includes a control module (8). The control module (8) includes a relay module (81), which is electrically connected to the vacuum gauge (72) and the vacuum pump (71) respectively.

5. The food freeze-drying apparatus according to claim 1, characterized in that, The material placement assembly (5) includes a material placement rack (51), a tray (52), and a support plate (53) disposed on the material placement rack (51), the support plate (53) being used to support the tray (52).

6. The food freeze-drying apparatus according to claim 5, characterized in that, The bottom of the pallet (53) is provided with a heating component (6), which is used to heat the material to be processed.

7. The food freeze-drying apparatus according to claim 1, characterized in that, The freeze-drying tank (3) is equipped with a drain pipe (26), which is connected to the freeze-drying chamber (31).

8. The food freeze-drying apparatus according to claim 6, characterized in that, The system includes a control module (8), which includes a relay module (81), a control panel (82), and a main controller (83). The output of the control panel (82) is electrically connected to the input of the main controller (83), the output of the main controller (83) is electrically connected to the input of the relay module (81), and the output of the relay module (81) is electrically connected to the input of the heating component (6) and the input of the refrigeration mechanism (2).

9. The food freeze-drying apparatus according to claim 1, characterized in that, The box (1) is provided with a sealing door (11) and a discharge port communicating with the freeze-drying chamber (31). The freeze-drying barrel (3) is provided with a sealing ring (34). When the sealing door (11) abuts against the sealing ring (34), the sealing door (11) is used to seal the freeze-drying chamber (31).

10. The food freeze-drying apparatus according to claim 2, characterized in that, The refrigeration mechanism (2) also includes a cooling fan (24) aligned with the condenser (21).

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