Vacuum freeze drying equipment
By introducing a fruit-turning mechanism and trays into the vacuum freeze-drying equipment, the problem of uneven drying of monk fruit was solved, achieving uniform drying and efficient production of monk fruit while maintaining the integrity of its nutritional components.
Patent Information
- Application Number
- CN202520212679.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-11
AI Technical Summary
In traditional freeze-drying methods, the drying uniformity of monk fruit is poor, resulting in inconsistent drying levels between the bottom and exposed parts, which affects the preservation of nutrients and production efficiency.
A vacuum freeze-drying device was designed, which includes a fruit-turning mechanism and a tray. The turning rod driven by a motor turns the monk fruit. Combined with the refrigeration and heating units, it ensures that the material is in uniform contact with the freeze-drying environment, and the vacuum unit maintains an appropriate vacuum level.
This method achieves uniform drying of monk fruit materials, improves drying efficiency, reduces labor intensity, increases production efficiency, and maintains the integrity of nutritional components.
Smart Images
Figure CN223636553U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a vacuum freeze drying technical field, especially a vacuum freeze drying equipment. BACKGROUND
[0002] Momordica is a kind of cucurbitaceae perennial vine plant, commonly grows in the altitude 400-1400 meters of mountain slope under the forest and river side wetland, shrub. The fruit of momordica has the medicinal value of moistening lung, expelling phlegm, diabetes, and also is a kind of cooling beverage raw material.
[0003] However, momordica drying is an important processing step, which can maximize the retention of nutrients and bioactive components in momordica, such as vitamins, minerals and antioxidants. Traditional drying methods, such as high-temperature baking, may cause the color of momordica dried fruit to become dark, the loss of nutrients, especially the loss of vitamin C. In order to solve these problems, modern processing technology of freeze drying is applied in the processing of momordica, which can better maintain the original color, aroma, taste, shape and nutrients of momordica, and improve the production efficiency and operation simplicity. However, momordica is generally placed in the freeze drying box without moving, and the drying uniformity of momordica is not good during the drying process, and the drying degree of the placed bottom and exposed part is inconsistent. Therefore, in order to ensure the uniformity of momordica drying, we design a kind of vacuum freeze drying equipment. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of vacuum freeze drying equipment to solve the problems raised in the above background technology.
[0005] In order to solve the above technical problems, the utility model provides the following technical scheme:
[0006] A kind of vacuum freeze-drying equipment, including cabinet, refrigeration unit, vacuum unit, heating unit and control system, the refrigeration unit, vacuum unit and heating unit are electrically connected with control system respectively;The cabinet front end side is hingedly connected with cabinet door, the cabinet door can be sealed and covered in cabinet, the inside of the cabinet is fixedly provided with partition, the inside space of the cabinet is separated into unit placement bin and freeze-drying bin by the partition, the refrigeration unit is used to freeze-drying bin cooling refrigeration, the vacuum unit is used to remove gas in freeze-drying bin, the heating unit is used to freeze-drying bin heating;The cabinet is provided with fruit turning mechanism and tray, the tray is detachably installed in freeze-drying bin, and it is used to place Luohan fruit material;The fruit turning mechanism includes vertically arranged main rotating rod, horizontally arranged fruit turning rod and motor, the main rotating rod is rotatably connected in freeze-drying bin and one end thereof is drivingly connected with the motor through transmission assembly, one end of the fruit turning rod is fixedly connected with the main rotating rod, in working state, the fruit turning rod can rotate in the tray to make Luohan fruit turn, and the motor is fixedly installed in the unit placement bin and is electrically connected with the control system.
[0007] As an option, the transmission assembly includes a transmission wheel and a belt, the output shaft of the motor and one end of the main rotating rod are each provided with a transmission wheel, and the belt is wound between the two transmission wheels.
[0008] As an option, the tray includes a tray frame and a tray bottom, the tray is provided with a U-shaped notch, and openings are formed in the tray frame on both sides corresponding to the notch, the openings allow the fruit turning rod to rotate through.
[0009] As an option, the tray has a circular structure, the tray bottom has a hollow mesh structure, and the fruit turning rod has an arc columnar structure.
[0010] As an option, the refrigeration unit includes a condenser, a refrigeration compressor, a water cooler, a heat exchanger and an evaporation pipeline fixedly installed in the unit placement bin, the heat exchanger includes a heat exchanger one and a heat exchanger two, the evaporation pipeline is meanderingly laid on the rear side wall of the freeze-drying bin, the refrigeration compressor, the water cooler, the heat exchanger one and the evaporation pipeline are sequentially connected to form a freeze-drying bin refrigeration circuit, control valves are arranged between the water cooler and the heat exchanger one and between the heat exchanger one and the refrigeration compressor, and an expansion valve is arranged between the heat exchanger one and the inlet end of the evaporation pipeline, the refrigeration compressor, the water cooler, the heat exchanger two and the condenser are sequentially connected to form a condensation refrigeration circuit, control valves are arranged between the water cooler and the heat exchanger two and between the heat exchanger two and the refrigeration compressor, and an expansion valve is arranged between the heat exchanger two and the input end of the condenser, the vacuum unit includes a vacuum pump and a vacuum gauge, the freeze-drying bin, the condenser and the vacuum pump are sequentially connected to form a water trapping channel, and the vacuum gauge is used to monitor the vacuum degree of the freeze-drying bin.
[0011] As an option, the exhaust port of the vacuum pump is in communication with the outside through a control valve, and the condenser is in communication with the outside through a control valve.
[0012] As an option, a heating shelf is arranged below the tray, and the heating shelf is fixedly connected to the left and right side walls of the cabinet body; the heating unit comprises a heating resistance wire and a heating power supply for heating the heating resistance wire, and the heating resistance wire is arranged in the interior of the heating shelf.
[0013] As an option, clamping strips are fixedly arranged on the left and right side walls of the cabinet body, and the clamping strips are arranged above the tray to clamp and fix the tray in cooperation with the heating shelf.
[0014] As an option, the number of the trays is several, and the number of the fruit turning rods corresponds to the number of the trays.
[0015] Due to the above technical scheme, the utility model has the following beneficial effects:
[0016] The utility model discloses a tray is placed in the freeze-drying bin, and the tray is placed on the heating shelf of the cabinet body in the way of drawing and is fixed through the clamping strip, which ensures the stability and safety of the momordica grosvenori materials in the freeze-drying process, realizes the quick loading and unloading of the momordica grosvenori materials, and improves the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the overall structure schematic diagram of the utility model.
[0018] Figure 2 It is the internal structure partial schematic diagram of the utility model.
[0019] Figure 3 It is the fruit turning mechanism structure schematic diagram of the utility model.
[0020] Figure 4 It is the front view of the utility model. Figure 3
[0021] Figure 5 It is the tray structure schematic diagram of the utility model.
[0022] Figure 6 It is the principle view of the refrigerating unit, the vacuum unit and the heating unit of the utility model.
[0023] In the drawings, the cabinet body 1, the partition plate 11, the unit placing bin 12, the freeze-drying bin 13, the cabinet door 2, the refrigeration unit 3, the condenser 31, the refrigeration compressor 32, the water cooler 33, the heat exchanger 34, the heat exchanger one 341, the heat exchanger two 342, the evaporation pipeline 35, the vacuum unit 4, the vacuum pump 41, the vacuum gauge 42, the heating unit 5, the heating resistance wire 51, the heating power supply 52, the fruit turning mechanism 6, the main rotating rod 61, the fruit turning rod 62, the motor 63, the transmission assembly 64, the transmission wheel 641, the belt 642, the tray 7, the tray frame 71, the tray bottom 72, the opening 73, and the heating shelf 8. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0025] Referring to Figures 1-6 The vacuum freeze-drying equipment in the embodiment includes a cabinet body 1, a cabinet door 2, a refrigeration unit 3, a vacuum unit 4, a heating unit 5, a control system, a fruit turning mechanism 6, and a tray 7. The refrigeration unit 3, the vacuum unit 4, and the heating unit 5 are electrically connected to the control system, and the control system is used to control the operation of each unit. The refrigeration unit 3 is used to cool and refrigerate the freeze-drying bin 13, the vacuum unit 4 is used to remove the gas in the freeze-drying bin 13, and the heating unit is used to heat the freeze-drying bin 13. It should be noted that the control system is a PLC controller, which is an application of the prior art. The control system includes a control display screen that can display monitoring data in the freeze-drying bin 13 to understand the freeze-drying condition in the freeze-drying process.
[0026] The cabinet door 2 is hingedly connected to one side of the front end of the cabinet body 1 and can be sealed and closed on the cabinet body 1. The inside of the cabinet body 1 is fixedly provided with a partition plate 11, which divides the inside space of the cabinet body 1 into a unit placing bin 12 and a freeze-drying bin 13. The cabinet body 1 is provided with a fruit turning mechanism 6 and a plurality of trays 7 for placing momordica grosvenori materials. The tray 7 can be detachably installed in the freeze-drying bin 13. Specifically, the freeze-drying bin 13 is provided with a heating shelf 8, the two sides of the heating shelf 8 are fixedly installed on the left and right side walls of the cabinet body 1, and the left and right side walls of the cabinet body 1 are also symmetrically welded with clamping strips 9. The clamping strips 9 are arranged above the heating shelf 8. The tray 7 can be directly placed on the heating shelf 8 and clamped and fixed by the clamping strips 9, that is, the tray 7 is installed in the freeze-drying bin like a drawer. Figure 5As shown, the tray 7 specifically presents a circular structure, which comprises a tray frame 71 and a tray bottom 72, the tray 7 is provided with a U-shaped notch, and the tray bottom 72 presents a hollow mesh structure, which is beneficial to freeze or heat the momordica grosvenori materials.
[0027] As shown in the figure, Figure 3 As shown, the fruit turning mechanism 6 specifically comprises a vertical main rotating rod 61, a plurality of horizontal fruit turning rods 62 and a motor 63, the motor 63 is fixedly installed in the machine group placing bin 12 and is electrically connected with the control system, the main rotating rod 61 is rotationally connected at the center in the freeze-drying bin 13, one end of the main rotating rod 61 passes through the shelf 11 and is transmissionally connected with the motor 63 through a transmission assembly 64, the transmission assembly 64 specifically comprises a transmission wheel 641 and a belt 642, the output shaft of the motor 63 and one end of the main rotating rod 61 are both provided with the transmission wheel 641, and the belt 642 is wound between the two transmission wheels 641. One end of the fruit turning rod 62 is fixedly connected on the main rotating rod 61, the fruit turning rod 62 specifically presents an arc column structure, and the notch of the tray 7 is provided with an opening 73 on the two sides of the tray frame 71, which can be used for the fruit turning rod 62 to rotate through. In the working state, the motor 63 drives the main rotating rod 61 to rotate, the fruit turning rod 62 makes a circular motion with the main rotating rod 61 as the center, and the bottom of the fruit turning rod 62 is as close as possible to the tray bottom 72, when the fruit turning rod 62 passes from below the momordica grosvenori materials, the momordica grosvenori is lifted and rolled to fall, so as to realize the turning of the momordica grosvenori materials.
[0028] As shown in the figure, Figure 6As shown, the refrigeration unit 3 specifically includes a condenser 31, a refrigeration compressor 32, a water cooler 33, a heat exchanger 34 including a heat exchanger one 341 and a heat exchanger two 342, and an evaporation pipeline 35 fixedly installed in the unit placement bin 12, the evaporation pipeline 35 is meanderingly laid on the rear side wall of the freeze-drying bin 13, the refrigeration compressor 32, the water cooler 33, the heat exchanger one 341 and the evaporation pipeline 35 are sequentially connected to constitute a freeze-drying bin refrigeration circuit, control valves are arranged between the water cooler 33 and the heat exchanger one 341 and between the heat exchanger one 341 and the refrigeration compressor 32, and an expansion valve is arranged between the heat exchanger one 341 and the inlet end of the evaporation pipeline 35, the water cooler 33, the heat exchanger two 342 and the condenser 31 are sequentially connected to constitute a condensation refrigeration circuit, control valves are arranged between the water cooler 33 and the heat exchanger two 342 and between the heat exchanger two 342 and the refrigeration compressor 32, an expansion valve is arranged between the heat exchanger two 342 and the input end of the condenser 31, and the water outlet of the condenser 31 is communicated with the outside through a control valve. The vacuum unit 4 specifically includes a vacuum pump 41 and a vacuum gauge 42, the freeze-drying bin 13, the condenser 31 and the vacuum pump 41 are sequentially connected to constitute a water collection channel, the air outlet of the vacuum pump 41 is communicated with the outside through a control valve, and the vacuum gauge 42 is used for monitoring the vacuum degree of the freeze-drying bin 13. The heating unit 5 specifically includes a heating resistance wire 51 and a heating power supply 52 for heating the heating resistance wire 51, the heating resistance wire 51 is arranged in the inside of the heating shelf 8, the heating shelf 8 can be specifically a copper plate, the copper plate generates radiant heat after being heated by the heating resistance wire 51, so as to heat the momordica grosvenori above, and the heating power supply 52 is fixedly installed in the unit placement bin 12.
[0029] The vacuum freeze-drying process of the utility model is divided into a pre-freezing stage, a water collection stage and a sublimation drying stage: 1. The pre-freezing stage: the momordica grosvenori is placed in the freeze-drying bin 13, at this time, the control system controls the freeze-drying bin 13 refrigeration circuit to run and the condensation refrigeration circuit not to run, gradually pre-freezing the momordica grosvenori, and not collecting the water in the freeze-drying bin 13, this stage lasts for 2-4 hours to make the temperature in the freeze-drying bin 13 drop to -40℃--60℃, and the momordica grosvenori is evenly iced by slowly turning the momordica grosvenori material through the fruit turning rod 62; 2. The water collection stage and the sublimation drying stage: the vacuum freeze-drying process of the momordica grosvenori usually lasts the longest in this stage, at this time, the control system controls the freeze-drying bin 13 refrigeration circuit not to run, the condensation refrigeration circuit to run and the vacuum pump 41 to start and run, and the heating unit is run, the freeze-drying bin 13 is vacuumized, the water in the momordica grosvenori is gradually sublimated, the water vapor is condensed into water through the condenser 31 and then discharged to the outside from the water outlet thereof, avoiding water accumulation in the inside of the cabinet 1, this stage lasts for 7-14 hours, and gradually makes the temperature in the freeze-drying bin 13 rise to 20℃-25℃. After the above stages, the cabinet door 2 is opened, the tray 7 is pulled out, and the momordica grosvenori material is collected for the next step.
[0030] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through the indirect connection of intermediate medium, can be two element internal communication or two element mutual action relation. For ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.
[0031] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.
[0032] Obviously, the above embodiments of the utility model are only for clear illustration of the utility model, and are not limited to the embodiments of the utility model. For ordinary skilled person in the art, various obvious changes, readjustment and replacement can be carried out without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.
Claims
1. A vacuum freeze-drying equipment, comprising a cabinet body (1), a refrigeration unit (3), a vacuum unit (4), a heating unit (5) and a control system, the refrigeration unit (3), the vacuum unit (4) and the heating unit (5) are respectively electrically connected with the control system; one side of the front end of the cabinet body (1) is hingedly connected with a cabinet door (2), the cabinet door (2) can be sealed and covered on the cabinet body (1), an inner portion of the cabinet body (1) is fixedly provided with a partition plate (11), the partition plate (11) separates the internal space of the cabinet body (1) into a unit placing bin (12) and a freeze-drying bin (13), the refrigeration unit (3) is used for cooling and refrigerating the freeze-drying bin (13), the vacuum unit (4) is used for pumping out the gas in the freeze-drying bin (13), and the heating unit is used for heating the freeze-drying bin (13); characterized in that: The cabinet (1) is provided with a fruit turning mechanism (6) and a tray (7), the tray (7) is detachably installed in the freeze-drying bin (13) and is used for placing momordica grosvenori materials; the fruit turning mechanism (6) comprises a vertically arranged main rotating shaft (61), a horizontally arranged fruit turning rod (62) and a motor (63), the main rotating shaft (61) is rotationally connected in the freeze-drying bin (13) and one end thereof is drivingly connected with the motor (63) through a transmission assembly (64), one end of the fruit turning rod (62) is fixedly connected with the main rotating shaft (61), in the working state, the fruit turning rod (62) can rotate in the tray (7) to turn the momordica grosvenori, and the motor (63) is fixedly installed in the machine group placing bin (12) and is electrically connected with a control system.
2. A vacuum freeze drying apparatus according to claim 1, wherein: The transmission assembly (64) comprises transmission wheels (641) and a belt (642), the output shaft of the motor (63) and one end of the main rotating shaft (61) are provided with transmission wheels (641), and the belt (642) is wound between the two transmission wheels (641).
3. A vacuum freeze drying apparatus as claimed in claim 1, wherein: The tray (7) comprises a tray frame (71) and a tray frame bottom (72), the tray (7) is provided with a U-shaped notch, the notch is provided with an opening (73) corresponding to the two side tray frames (71), and the opening (73) is used for allowing the fruit turning rod (62) to rotate through.
4. A vacuum freeze drying apparatus as claimed in claim 3, wherein: The tray (7) is in a circular structure, the tray frame bottom (72) is in a hollow mesh structure, and the fruit turning rod (62) is in an arc columnar structure.
5. The vacuum freeze-drying apparatus according to claim 1, wherein: The refrigeration unit (3) comprises a condenser (31), a refrigeration compressor (32), a water cooler (33), a heat exchanger (34) and an evaporation pipeline (35) which are fixedly installed in the machine group placing bin (12), the heat exchanger (34) comprises a heat exchanger one (341) and a heat exchanger two (342), the evaporation pipeline (35) is meanderingly laid on the rear side wall of the freeze-drying bin (13), the refrigeration compressor (32), the water cooler (33), the heat exchanger one (341) and the evaporation pipeline (35) are sequentially connected to form a freeze-drying bin refrigeration circuit, control valves are arranged between the water cooler (33) and the heat exchanger one (341) and between the heat exchanger one (341) and the refrigeration compressor (32), and an expansion valve is arranged between the heat exchanger one (341) and the inlet end of the evaporation pipeline (35); the refrigeration compressor (32), the water cooler (33), the heat exchanger two (342) and the condenser (31) are sequentially connected to form a condensation refrigeration circuit, control valves are arranged between the water cooler (33) and the heat exchanger two (342) and between the heat exchanger two (342) and the refrigeration compressor (32), and an expansion valve is arranged between the heat exchanger two (342) and the input end of the condenser (31); the vacuum unit (4) comprises a vacuum pump (41) and a vacuum gauge (42), the freeze-drying bin (13), the condenser (31) and the vacuum pump (41) are sequentially connected to form a water trapping channel, and the vacuum gauge (42) is used for monitoring the vacuum degree of the freeze-drying bin (13).
6. A vacuum freeze drying apparatus as claimed in claim 5, wherein: The exhaust port of the vacuum pump (41) is communicated with the outside through a control valve, and the condenser (31) is communicated with the outside through a control valve.
7. A vacuum freeze drying apparatus as claimed in claim 6, wherein: A heating shelf (8) is arranged below the tray (7), and two sides of the heating shelf (8) are fixedly connected to the left and right side walls of the cabinet body (1); the heating unit (5) comprises heating resistance wires (51) and a heating power supply (52) for heating the heating resistance wires (51), and the heating resistance wires (51) are arranged inside the heating shelf (8).
8. A vacuum freeze drying apparatus according to claim 7, wherein: A clamping strip (9) is fixedly arranged on the left and right side walls of the cabinet body (1), and the clamping strip (9) is arranged above the tray (7) to clamp and fix the tray (7) in cooperation with the heating shelf (8).
9. A vacuum freeze-drying apparatus according to any one of claims 1 to 8, characterized in that: The number of the trays (7) is several, and the number of the fruit turning rods (62) corresponds to the number of the trays (7).