TW202236979A - Classified food drying apparatus with room temperature and pressure - Google Patents

Abstract

The present invention is related to a classified food drying apparatus with normal temperature and pressure. The classified food drying apparatus has a first and second drying rooms communicated to each other. Air in the first drying room is drawn out and a temperature thereof is adjusted to a first temperature. The air is further transmitted to a dehumidifier at a second temperature. A temperature difference between the first and second temperatures makes that the first temperature of the exhausted air is decreased to a dew point and then a vaporous water included in the exhausted air becomes to a liquid. The air through the dehumidifier becomes dry air. A temperature of the dry air is adjusted to a room temperature and then transmitted to the second drying room. Since semi-dried foods are placed in the second drying room, the dry air at room temperature increases a speed of drying food and an absorption of moisture is limited. Therefore, the dry air through the second drying room still dry foods with higher humidity in the first drying room. The present invention not only ensures that the first and second drying rooms are at room temperature and pressure, and the foods with different humidity levels are classed in different drying room to effectively increase the production of dry foods.

Description

Normal temperature and pressure food grade drying equipment

The invention relates to a normal temperature and pressure food drying equipment, in particular to a normal temperature and pressure food graded drying equipment.

Food drying technology allows food to prolong the storage time. Common food drying technologies include hot air drying, vacuum frying and dehydration drying, vacuum freeze drying, air drying, normal temperature and pressure drying, etc.; these food drying methods have Its advantages and disadvantages, among them, the normal temperature and pressure drying method can best retain the nutritional content of the food, which is the best drying processing method; however, although the normal temperature and normal pressure drying method can retain the nutritional content of the food, it requires a long drying time for the food , helpless mass production.

At present, the existing room temperature drying system that can dry a large amount of food can dry a large amount of food evenly at room temperature. One of the dehydration devices is additionally equipped with air pressurization equipment, which extracts the indoor air in the drying room and then pressurizes it. Then send it into the water removal device to increase the water removal capacity of the water removal device to relatively increase the dryness of the air outlet from the water removal device, and return the dry air to the drying room to accelerate the drying speed of the indoor food . Such a room temperature drying system can indeed complete the food drying process at room temperature, but the air pressurization equipment not only takes up space but also consumes power and high equipment cost, it is still not the best room temperature drying system.

Domestic announcement No. I546022 "Normal temperature and pressure food drying equipment" invention patent proposes that a large amount of dried food can be produced by normal temperature and normal pressure drying, but it is still limited by the long drying time at normal temperature and normal pressure, and the output is limited, so it is necessary to further improve it.

In view of the fact that there is still room for improvement in the quantity of food dried by the current normal temperature and pressure food drying equipment, the main purpose of the present invention is to propose a normal temperature and pressure food graded drying equipment.

The main technical means used to achieve the above purpose is that the normal temperature and pressure food grade drying equipment includes: A first drying chamber, including a first air outlet and a first air inlet; A second drying chamber comprising a second air outlet and a second air inlet; wherein the second air outlet is connected to the first air inlet of the first drying chamber; A first circulating air pipe includes an air inlet pipe and an air outlet pipe; wherein the air inlet pipe is connected to the first air outlet of the first drying chamber, and the air outlet pipe is connected to the air outlet of the second drying chamber. second air inlet; A first air blower is connected in series with the air intake pipe of the first circulating air pipe, and draws the indoor air from the first air outlet of the drying chamber; A first temperature control unit is connected in series to the intake pipe of the first circulating air pipe to adjust the temperature of the air in the intake pipe to maintain a first temperature; A dehumidification device includes a container, a low-temperature gas channel, a water outlet, and a refrigeration unit, the container is connected in series between the inlet pipe and the outlet pipe of the first circulating air pipe, and is maintained by the refrigeration unit At a second temperature, and the low-temperature gas channel is arranged in the inner space of the container, communicates with the inlet pipe and the gas outlet pipe of the first circulating air pipe, and the water outlet communicates with the low-temperature gas channel; wherein The air outlet pipe passes through the heating area of the refrigeration unit to increase the temperature of the air in the air outlet pipe; and A second temperature control unit is connected in series to the outlet pipe of the first circulating air pipe to adjust the temperature of the air in the outlet pipe to maintain a normal temperature; The above-mentioned second temperature is lower than the first temperature, so that the temperature of the gas in the low-temperature gas channel is reduced to a dew point temperature, and the gaseous water contained therein is condensed into liquid water, which is discharged from the water outlet.

It can be seen from the above description that the food graded drying equipment of the present invention mainly includes two first and second drying chambers that communicate with each other but place foods with different humidity. First, the air in the first drying chamber is extracted and its temperature is adjusted to the second One temperature, and then pass through a dehumidification device maintained at a second temperature lower than the first temperature, so that the temperature of the air drops to the dew point temperature and dehumidification and drainage are performed to make the air drier, and then the temperature of the dry air is adjusted to Return to the second drying room after normal temperature; because the second drying room places semi-dry food with low humidity, the dry air at room temperature can speed up its drying speed, and the absorbed moisture is limited, which can be used for drying food placed in the first drying room. Foods with high indoor humidity are dried; this can not only ensure that the first and second drying chambers are at normal temperature and pressure, and set foods with different humidity levels in different levels, but also effectively increase the production of dried foods; The heat generating area of the refrigeration unit makes the temperature of the air in the outlet pipe rise in advance, reducing the power consumption burden of the second temperature control unit for heating to normal temperature.

The present invention further improves the food drying equipment at normal temperature and pressure, and several preferred embodiments are given below to illustrate the detailed technical content of the present invention.

First please refer to Fig. 1A and shown in Fig. 1B, it is the first embodiment of the food grading and drying equipment at normal temperature and pressure of the present invention, which includes a body 10, a first drying chamber 20, a second drying chamber 21, a A first circulating air pipe 30 , a first blower 40 , a first temperature control unit 50 , a dehumidifier 60 and a second temperature control unit 51 .

At least three spaces 11, 12, 13 are separated in the above-mentioned body 10, wherein the two spaces 11, 12 respectively house the first and second drying chambers 20, 21, and the body 10 corresponds to the first and second drying chambers. One side of the two drying chambers 20, 21 is respectively provided with a door panel 111, 121, for the food to be dried and the dried food to enter and exit the first and second drying chambers 20, 21. The structures other than the first and second drying chambers 20 , 21 are arranged in another space 13 of the body 10 .

Two opposite sides of the first drying chamber 20 are respectively formed with a first air outlet 201 and a first air inlet 202, and two opposite sides of the second drying chamber 21 are respectively formed with a second air outlet 211 and a second air inlet. The tuyere 212 ; and the second air outlet 211 is connected to the first air inlet 202 , so that the second drying chamber 21 and the first drying chamber 20 communicate. In this embodiment, the main body 10 separates two adjacent spaces 11, 12, and a partition is between the first and second drying chambers 20, 21, so a perforation can be formed on the partition, so that the The first and second drying chambers 20 and 21 are connected; therefore, the second air outlet 211 and the first air inlet 202 of the present invention can be perforated on the partition, as shown in FIG. 3B .

The above-mentioned first circulating air pipe 30 comprises an air inlet pipe 31 and an air outlet pipe 32, wherein the air inlet pipe 31 is connected to the first air outlet 201 of the first drying chamber 20, and the air outlet pipe 32 is connected to the The second air inlet 212 of the second drying chamber 21 forms an airtight communication gas channel with the first and second drying chambers 20, 21; in one embodiment, the first circulating air pipe 30 can be an independent pipe , or an airtight passage is separated by a partition in the body 10 as the first circulating air pipe 30 , but it is not limited thereto.

The above-mentioned first air blower 40 is connected in series with the air intake pipe 31 of the first circulating air pipe 30, and the indoor air is extracted from the first air outlet 21 of the first drying chamber 20 and sent to the dehumidifier 60; The horsepower of the blower 40 is determined according to the volume of the drying equipment, and its gas flow can be adjusted, so the matching gas flow can be adjusted according to the types of food to be dried in the first and second drying chambers 20 and 21.

The above-mentioned first temperature control unit 50 is connected in series with the intake pipe 31 of the first circulating air pipe 30 to adjust and maintain the temperature of the air in the intake pipe 31 at a first temperature. In this embodiment, the first temperature control unit 50 is closer to the first air outlet 201 of the first drying chamber 20 than the first blower 40 .

The above-mentioned dehumidification device 60 includes a container 61 , a low-temperature gas channel 62 , a water outlet 63 and a refrigeration unit 64 . The container 61 is connected in series between the inlet pipe 31 and the outlet pipe 32 of the first circulating air pipe 30, the low-temperature gas channel 62 is arranged in the container 61, and is connected with the first circulating air pipe 30. The air inlet pipe 31 communicates with the air outlet pipe 32 . The water outlet 63 communicates with the low-temperature gas channel 62 ; preferably, the water outlet 63 is formed at the connection between the container 61 and the gas outlet pipe 32 to communicate with the low-temperature gas channel 62 . The refrigeration unit 64 is connected to the container 61 so that the container 61 is maintained at a second temperature, and the second temperature is lower than the first temperature, and the temperature difference between the first and second temperatures will make the first When the temperature is lowered to a dew point temperature, the refrigerating unit 64 can be a compressor, which will generate heat during operation, so its heating area 641 will communicate with the outside of the body 10 through a channel 642 to perform heat exchange; In this embodiment, the inlet of the channel 642 is further provided with an air filter 70 to filter the air entering the body 10 from outside the body. Because the low-temperature gas passage 62 in the container communicates with the air inlet pipe 31, through the operation of the first blower 50, the air at the first temperature in the air inlet pipe 31 will be discharged into the low-temperature gas passage 62. After the gas at the first temperature enters the low-temperature gas pipe 62 , the temperature of the air temperature will asymptotically be lower than the dew point temperature, so that the gaseous water in the gas condenses into liquid water and turns into a dry gas. The dry gas will be discharged into the gas outlet pipe 32 communicating with the low-temperature gas channel 62 , and the liquid water will be discharged from the water outlet 63 smoothly, and further discharged out of the main body 10 . In this embodiment, the low-temperature gas passage 62 is a low-temperature gas pipe, and the low-temperature gas pipe can be connected in parallel by a plurality of branch elbows and communicated with each other. As shown in FIG. 2, the low-temperature gas passage 62 is a Continuous bend. Also in this embodiment, a cooling liquid 611 can be further added into the container 61, so that the low-temperature channel 62 is completely immersed in the cooling liquid 611, which can prevent the outer wall of the low-temperature channel 62 from frosting or freezing.

Since the heating area 641 of the refrigeration unit 64 of the dehumidification device 60 will generate heat during operation, the outlet pipe 32 of the first circulating air pipe 30 can be further connected to the heating area 641 of the refrigeration unit 64, so that the air in the outlet pipe 32 The dry air passes through the heating area 641 to absorb the heat of the heating area 641 to increase the temperature of the air therein. In this embodiment, in order to effectively improve the heat exchange between the dry air and the heating area 641 , the heating area 64 can be provided with large-area cooling fins.

The above-mentioned second temperature control unit 51 is connected in series with the air outlet pipe 32 of the first circulating air pipe 30. When the dry gas discharged from the dehumidification device 60 enters the air outlet pipe 32 and passes through the heating area 641, the temperature is further adjusted and maintained. The temperature of the dry air in the air outlet pipe 32 is at a normal temperature; here, the dry air in the air outlet pipe 32 is usually heated to the normal temperature by heating. Since the air outlet pipe 32 is connected to the second air inlet 212 of the second drying chamber 21, the dry gas at normal temperature can be discharged into the second drying chamber 21, and then the second air outlet of the second drying chamber 21 211 and the first air inlet 202 of the first drying chamber 20 enter into the first drying chamber 20; such a cycle keeps passing through the dehumidification device 60 to remove water and become more dry, so that the humidity in the drying chamber 20 is continuously reduced, so that The moisture contained in the food is forced to release to achieve the drying effect.

As can be seen from the above embodiment, since the time for drying food at normal temperature and pressure is relatively long, the semi-dry food with low humidity can be placed in the second drying chamber 21, and the driest air is allowed to accelerate the drying of the semi-dry food first. The humidity of dried food is relatively low, and the air that passes through this second drying chamber 21 absorbs little moisture, and after entering this first drying chamber 20, food with higher humidity can still be dried; therefore, during actual operation of the present invention, it is possible First make a batch of semi-dried food with the first drying chamber 20 (humidity and volume are all reduced), then put it into the second drying chamber 21, and then put the next batch of fresh food in the first drying chamber 20 (humidity and volume are reduced). In this way, semi-dry food can be accelerated to fully dry food at the same time, and fresh food can be dried at room temperature and pressure smoothly, so that the output of dry food can be increased.

Please refer to Fig. 3A and Fig. 3B again, it is the second embodiment of the food grading and drying equipment at normal temperature and pressure of the present invention, which is roughly the same as the first embodiment shown in Fig. 1A and Fig. 1B, but further includes a The third drying chamber 22.

In this embodiment, as shown in FIG. 4 , the main body 10 is divided into four spaces 11 , 12 , 13 , and 14 , and the three spaces 11 , 12 , and 14 respectively accommodate the first to third drying chambers 20 , 21, 22 Among them, the first and third drying chambers 20, 22 are adjacently arranged side by side. The third drying chamber 22 includes a third air outlet 221 and a third air inlet 222, the third air outlet 221 is directly exposed outside the body 10, and the third air inlet 222 passes through an inner air duct 33 Connected to the heating area 641 of the refrigeration unit 64, and connected to the outside of the main body 10 through an outer air pipe 34, the outer air pipe 34 is provided with an air filter 70', the third air inlet 222 and the inner and outer air pipes 33, 34 connection is provided with a dehumidifier 71, a third temperature control unit 52 and an exhaust fan 41; wherein the exhaust fan 42 draws in the external air, passes through an air filter 70' and a dehumidifier 71, and The air is filtered and dehumidified; at the same time, the dry air passing through the heating area 641 of the refrigeration unit 64 is extracted and mixed with the outside air; in this way, the temperature of the outside air can be slightly raised, and then the third temperature control unit 52 adjusts the temperature of the mixed dry air temperature, and maintained at room temperature, enter the third air inlet 222, dry the food in the third drying chamber 22, and then discharge through the third air outlet 221. The order and position of the dehumidifier 71 , the third temperature control unit 52 and the exhaust fan 41 in this embodiment can be adjusted, so that the air entering the third air inlet 222 is filtered and dried. In this embodiment, as shown in FIG. 3B, the inner and outer air pipes 33, 34 can be integrally connected and arranged on the back of the body 10, and form an outer cover structure, so as to be connected with a cover of the heat dissipation fins arranged on the heat dissipation area 641. The body 643 is connected, and the large-area cooling fins can increase the heating area.

As can be seen from the above description, the second embodiment of the normal temperature and pressure food grading and drying equipment of the present invention adds a drying chamber, and extracts a part of the internally circulated dry air to mix with the external air. In this way, compared with the first embodiment, the dry food output of the food grading drying equipment of the present invention can be further improved.

To sum up, the food grading and drying equipment of the present invention mainly provides at least two drying rooms connected to each other but for placing foods with different humidity. One temperature, and then pass through a dehumidification device maintained at a second temperature lower than the first temperature, so that the temperature of the air drops to the dew point temperature and dehumidification and drainage are performed to make the air drier, and then the temperature of the dry air is adjusted to After normal temperature, return to the drying room where the food with low humidity is placed; due to the drying room where the semi-dry food with low humidity is placed, the dry air at room temperature can speed up the drying speed, and the absorbed moisture is limited, and the humidity is relatively low when entering the room. The drying room of Gaozhi Food can still dry the food; in this way, it can not only ensure that each drying room is at normal temperature and pressure, and the food with different humidity can be set in different levels, but also can effectively improve the production of dry food; in addition, because the air outlet pipe system Through the heating area of the refrigeration unit, the temperature of the air in the outlet pipe is raised in advance, reducing the power consumption burden of the second temperature control unit for heating to normal temperature.

The above description is only an embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with the embodiment, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field, Within the scope of not departing from the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

10: Body 11, 12, 13, 14: accommodation space 111, 112, 113: door panels 20: The first drying room 201, 201’: the first air outlet 202, 202': the first air inlet 21: The second drying room 211: Second air outlet 212: The second air inlet 22: The third drying room 221: The third air outlet 222: The third air inlet 30: The first circulating trachea 31: Intake pipe 32: Outlet pipe 33: inner trachea 34: Outer trachea 40: First blower 41: exhaust fan 50: The first temperature control unit 51: The second temperature control unit 52: The third temperature control unit 60: Dehumidification device 61: container 611: cooling liquid 62:Cryogenic gas channel 63: water outlet 64: Refrigeration unit 641:Heating area 642: channel 643: cover body 70, 70': air filter 71: Dehumidifier

Fig. 1A: a three-dimensional appearance view of the first embodiment of the normal temperature and pressure food grading and drying equipment of the present invention. FIG. 1B : a schematic diagram of an internal structure of FIG. 1A . Fig. 2: A partial structural schematic diagram of the dehumidification device of the present invention. Fig. 3A: a front perspective perspective view of the second embodiment of the normal temperature and pressure food grading and drying equipment of the present invention. Fig. 3B: a rear perspective perspective view of the second embodiment of the normal temperature and pressure food grading and drying equipment of the present invention. FIG. 4: A schematic diagram of an internal structure of FIG. 3A.

10: Ontology

11, 12, 13: space

20: The first drying room

201: The first air outlet

202: The first air inlet

21: The second drying room

211: Second air outlet

212: Second air inlet

30: The first circulating trachea

31: Intake pipe

32: Outlet pipe

40: First blower

50: The first temperature control unit

51: Second temperature control unit

60: Dehumidification device

61: container

62:Cryogenic gas channel

63: water outlet

64: Refrigeration unit

641: hot zone

Claims (10)

A normal temperature and pressure food graded drying equipment, including: A first drying chamber, including a first air outlet and a first air inlet; A second drying chamber comprising a second air outlet and a second air inlet; wherein the second air outlet is connected to the first air inlet of the first drying chamber; A first circulating air pipe includes an air inlet pipe and an air outlet pipe; wherein the air inlet pipe is connected to the first air outlet of the first drying chamber, and the air outlet pipe is connected to the air outlet of the second drying chamber. second air inlet; A first air blower is connected in series with the air intake pipe of the first circulating air pipe, and draws the indoor air from the first air outlet of the drying chamber; A first temperature control unit is connected in series to the intake pipe of the first circulating air pipe to adjust the temperature of the air in the intake pipe to maintain a first temperature; A dehumidification device includes a container, a low-temperature gas channel, a water outlet, and a refrigeration unit, the container is connected in series between the inlet pipe and the outlet pipe of the first circulating air pipe, and is maintained by the refrigeration unit At a second temperature, and the low-temperature gas channel is arranged in the inner space of the container, communicates with the inlet pipe and the gas outlet pipe of the first circulating air pipe, and the water outlet communicates with the low-temperature gas channel; wherein The air outlet pipe passes through the heating area of the refrigeration unit to increase the temperature of the air in the air outlet pipe; and A second temperature control unit is connected in series to the outlet pipe of the first circulating air pipe to adjust the temperature of the air in the outlet pipe to maintain a normal temperature; The above-mentioned second temperature is lower than the first temperature, so that the temperature of the gas in the low-temperature gas channel is reduced to a dew point temperature, and the gaseous water contained therein is condensed into liquid water, which is discharged from the water outlet. The food grading and drying equipment at normal temperature and pressure as described in Claim 1, wherein the dry air in the outlet pipe enters the heat-generating area of the refrigeration unit, and the heat-generating area exchanges heat with the outside air through a channel. The normal temperature and pressure food grading and drying equipment as described in Claim 2, wherein an air filter is arranged at the entrance of the channel. The food grading and drying equipment at normal temperature and pressure as described in claim 3, wherein the heat dissipation area is provided with heat dissipation fins. The normal temperature and pressure food grading and drying equipment described in any one of claims 2 to 4 further includes a third drying chamber, and the first drying chamber further includes another air inlet and another first air outlet ; Wherein the third drying chamber contains: a third air outlet; and A third air inlet is connected to an inner air pipe and an outer air pipe; wherein: The inner air pipe is in communication with the heating area of the refrigeration unit, and part of the dry air passing through the heating area in the air outlet pipe is sent to the third air inlet; and The external air pipe system is exposed, and the external air is sent to the third air inlet. The normal temperature and pressure food grading and drying equipment as described in claim 5, wherein the external air pipe is provided with another air filter to filter the external air. The food grading and drying equipment at normal temperature and pressure as described in Claim 6, wherein a dehumidifier, a third temperature control unit and an exhaust fan are further provided at the joints of the third air inlet, the inner air pipe and the outer air pipe. The normal temperature and pressure food grading and drying equipment as described in Claim 5, wherein the first drying chamber and the third drying chamber are arranged side by side. The normal temperature and pressure food graded drying equipment as described in any one of claims 1 to 4, wherein a cooling liquid is further added into the container of the dehumidification device, so that the low temperature channel is completely immersed in the cooling liquid. The normal temperature and pressure food graded drying equipment as described in claim 5, wherein a cooling liquid is further added into the container of the dehumidification device, so that the low temperature channel is completely immersed in the cooling liquid.

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