Energy-saving dryer for drying fruits

Abstract

The utility model belongs to fruit drying technical field especially is used for energy -saving type drying -machine of fruit drying, including the frame of sliding insertion with the door plant, the inside of frame is provided with circulating device, circulating device includes the vane, the rotation drive of vane hot air in the frame carries out forced convection circulation, adjust the number to the moisture hole through setting drying device, the air of heat pump's air inlet inhales from the outside environment, the air that passes through heating is discharged through the air outlet of heat pump, and usually is transported to the conveying frame in pipeline, drying rack is located in the support pole of conveying frame middle, has set up the conveying hole on the support pole, is used for conveying hot air to stainless steel drying rack, temperature sensor will data transmission to control system, and control system drives heat pump through the program, thereby adjusts the temperature of the hot air that heat pump delivery according to the heat required by drying fruit.

Description

Technical Field

[0001] This utility model relates to the field of fruit drying technology, and in particular to an energy-saving dryer for fruit drying. Background Technology

[0002] Fruit drying is an important food processing technology. Its purpose is to reduce the moisture content of fruits, inhibit the growth of microorganisms, extend shelf life, and at the same time retain the nutritional components and flavor of the fruits. Dried fruit products are easy to transport and store, and are widely used in the food industry and daily life.

[0003] In existing technologies, when drying fruits such as apples, strawberries, and oranges, different fruits or different stages of drying the same fruit have different humidity requirements. The number of exhaust vents is fixed, and it is impossible to dynamically adjust the amount of humidity discharged according to the moisture content of the material and the drying stage. Furthermore, the hot air cannot be evenly distributed inside the dryer, resulting in some areas overheating and scorching, while other areas are not dried thoroughly due to insufficient temperature. Therefore, an energy-saving dryer for fruit drying is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In order to solve the technical problems in the prior art, such as the fixed number of dehumidification holes, the inability to dynamically adjust the humidity discharge according to the moisture content of the material and the drying stage, and the uneven distribution of hot air inside the dryer, resulting in some areas overheating and scorching while others are not dried thoroughly due to insufficient temperature, this application provides an energy-saving dryer for fruit drying.

[0005] The present invention proposes an energy-saving dryer for fruit drying, comprising a frame with a door panel slidably inserted, and a circulation device inside the frame, the circulation device comprising blades, the rotation of the blades driving the hot air inside the frame to undergo forced convection circulation.

[0006] The frame is equipped with a drying device, which includes an adjusting plate and dehumidification holes. The number of dehumidification holes is adjusted by moving the adjusting plate.

[0007] Preferably, the circulation device further includes a motor, which is fixedly installed in the bottom groove of the frame, and the output shaft of the motor is rotatably connected to the bottom groove of the frame through a bearing seat.

[0008] Through the above technical solution, the motor is fixedly installed on the frame, and the output shaft of the motor is rotatably connected to the frame through the bearing seat to ensure the stability of the output shaft rotation. The motor model can be Siemens YVF2 series, which has the characteristics of high efficiency, energy saving and reliable operation, and can be used with Siemens G120 series frequency converter to accurately adjust the speed of the rotating rod.

[0009] Preferably, the output shaft of the motor is fixedly mounted with a rotating rod, the rotating rod is rotatably connected to the top groove of the frame via a bearing, and the rear groove of the frame is rotatably connected to a rotating rod via a bearing.

[0010] The above technical solution involves fixing the motor output shaft to the rotating rod, driving the rotating rod to rotate. The rotating rod is rotatably connected to the frame via bearings, and the frame is rotatably connected to the rotating rod via bearings, ensuring the stability of its rotation. Both the rotating rod and the rotating rod are made of stainless steel, which has the characteristics of corrosion resistance and high strength. The bearings can be stainless steel deep groove ball bearings, which have the characteristics of high load capacity, corrosion resistance, low vibration, and are suitable for high temperature environments.

[0011] Preferably, the outer surface of the rotating rod is driven to rotate by a bevel gear set, the blade is fixedly installed on the outer surface of the front end of the rotating rod, a protective frame is fixedly installed on the inner wall of the frame, and the blade is located inside the protective frame.

[0012] Through the above technical solution, the rotating rod drives the rotating rod to rotate through a bevel gear set. The rotating rod is fixedly installed with the blades, driving the blades to rotate synchronously. The blades can be made of aluminum alloy, which has the characteristics of being lightweight, high temperature resistant, and corrosion resistant. They are fixedly installed with a frame and a protective frame to secure them. The blades are protected by being located inside the protective frame. The protective frame is also made of aluminum alloy to reduce the weight of the device. The rotation speed of the blades is usually 0.1-0.25 r / s to ensure uniform distribution of hot air.

[0013] Preferably, the drying device further includes a heat pump, which is fixedly installed on the left side surface of the frame. A conveyor frame is fixedly installed in the left side groove of the frame, and the air outlet of the heat pump is fixedly connected to the left end surface of the conveyor frame through a pipe.

[0014] Through the above technical solution, the heat pump is fixedly installed to the frame, and the frame is fixedly installed to the conveyor frame. The air inlet of the heat pump draws in air from the outside environment. The air first passes through the evaporator, where the low-temperature heat is absorbed by the refrigerant. Then the refrigerant is compressed by the compressor, increasing its temperature and pressure. Next, the high-temperature and high-pressure refrigerant flows through the condenser, releasing heat to the air and raising its temperature. The heated air is discharged through the air outlet of the heat pump and is usually transported to the conveyor frame through pipelines. The heat pump model can be selected as Sahara KC-240RD / 8C, which has the advantages of energy saving, high efficiency, and stable operation.

[0015] Preferably, a stainless steel drying rack is slidably inserted into the grooves on both sides of the frame, and a temperature sensor and a humidity sensor are fixedly installed on the inner wall of the frame respectively.

[0016] The above technical solution uses a frame that slides into the stainless steel drying rack, fixing it in place without hindering its removal. The drying rack is located in the middle of the support rods of the conveyor frame, with conveying holes on the rods to deliver hot air to the stainless steel drying rack. The frame is fixed to temperature and humidity sensors to monitor the internal temperature and humidity in real time. The temperature sensor transmits data to the control system, which drives the heat pump through a program to adjust the temperature of the hot air delivered by the heat pump according to the heat required for drying the fruit. For example, for apples, the temperature is 50-60℃ to prevent browning caused by high temperatures; for oranges, the temperature is 45-55℃ to maintain vitamin C content. Simultaneously, the humidity sensor transmits data to the control system, which can determine the drying process and adjust the fan motor speed through a program. For example, when the humidity is high, the fan speed is increased to accelerate dehumidification; when the temperature is too high, the fan speed is reduced to prevent the material from overheating. The positions of the temperature and humidity sensors are not fixed; operators can adjust their positions as needed.

[0017] Preferably, the dehumidification hole is opened on the upper surface of the frame, a filter screen is fixedly bonded in the top groove of the frame, the filter screen is located below the dehumidification hole, and the adjustment plate is slidably inserted into the top groove of the frame.

[0018] The above technical solution uses a dehumidification hole located above the frame for easy drainage. The frame is fixedly attached to the filter, facilitating both fixation and replacement. The filter, also made of stainless steel, is positioned below the dehumidification hole to prevent dust from entering the frame. An adjustment plate slides into the frame, allowing operators to adjust the number of dehumidification holes based on humidity detected by a humidity sensor. When not in use, this design effectively prevents dust from entering the frame.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. By setting up a circulation device, the hot air inside the drive frame is forced to circulate. The motor drives the rotating rod to rotate, and the rotating rod drives the rotating shaft to rotate through the bevel gear set, which drives the blades to rotate synchronously. The blades are located inside the protective frame to protect them. The blade rotation speed is usually 0.1-0.25 r / s to ensure uniform distribution of hot air. This solves the technical problem in the prior art that the hot air cannot be evenly distributed inside the dryer, resulting in some areas overheating and scorching, while other parts are not dried thoroughly due to insufficient temperature.

[0021] 2. By setting up a drying device and adjusting the number of exhaust vents, the heat pump draws in air from the outside environment, heats the air, and discharges it through the heat pump outlet. The air is typically piped to the conveyor rack, which is located in the middle of the support rods. The support rods have conveying holes for delivering hot air to the stainless steel drying rack. Temperature sensors transmit data to the control system, which drives the heat pump via a program to adjust the temperature of the hot air according to the heat required for drying the fruit. Simultaneously, humidity sensors transmit data to the control system, which can determine the drying process and adjust the fan motor speed accordingly. A filter is located below the exhaust vents to prevent dust from entering the frame. Operators can adjust the number of exhaust vents by moving an adjustment plate based on the humidity detected by the humidity sensor. When not in use, this prevents dust from entering the frame. This solves the technical problem in existing technologies where, when drying fruits such as apples, strawberries, and oranges, different fruits or different drying stages of the same fruit have different humidity requirements, and the number of exhaust vents is fixed, making it impossible to dynamically adjust the amount of humidity discharged based on the material's moisture content and the drying stage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an energy-saving dryer for fruit drying proposed in this utility model;

[0023] Figure 2 This is a perspective view of the heat pump structure of the energy-saving dryer for fruit drying proposed in this utility model;

[0024] Figure 3 This is a perspective view of the dehumidification hole structure of the energy-saving dryer for fruit drying proposed in this utility model;

[0025] Figure 4 This is a perspective view of the adjusting plate structure of the energy-saving dryer for fruit drying proposed in this utility model;

[0026] Figure 5 This is a perspective view of the blade structure of the energy-saving dryer for fruit drying proposed in this utility model;

[0027] Figure 6 This is a perspective view of the stainless steel drying rack structure of the energy-saving dryer for fruit drying proposed in this utility model;

[0028] Figure 7 This is a perspective view of the conveyor frame structure of the energy-saving dryer for fruit drying proposed in this utility model.

[0029] In the diagram: 1. Frame; 2. Motor; 3. Rotating rod; 31. Rotating rod; 4. Blade; 41. Protective frame; 5. Heat pump; 51. Conveyor frame; 6. Stainless steel drying rack; 61. Temperature sensor; 62. Humidity sensor; 7. Exhaust vent; 71. Filter screen; 72. Adjustment plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figures 1-7 An energy-saving dryer for fruit drying includes a frame 1 with a sliding door panel. The frame 1 is equipped with a circulation device, which includes blades 4. The rotation of the blades 4 drives the hot air inside the frame 1 to circulate in a forced convection manner.

[0032] To precisely adjust the rotational speed of the rotating rod 3, the circulation device also includes a motor 2. The motor 2 is fixedly installed in the bottom groove of the frame 1. The output shaft of the motor 2 is rotatably connected to the bottom groove of the frame 1 through a bearing seat. The motor 2 is fixedly installed to the frame 1 to ensure the stability of its output shaft rotation. The model of the motor 2 can be Siemens YVF2 series, which has the characteristics of high efficiency, energy saving and reliable operation, and can be used with Siemens G120 series frequency converters to precisely adjust the rotational speed of the rotating rod 3.

[0033] To drive the rotating rod 3 to rotate, the output shaft of the motor 2 is fixedly mounted with the rotating rod 3. The rotating rod 3 is rotatably connected to the top groove of the frame 1 via a bearing. The rear groove of the frame 1 is rotatably connected with the rotating rod 31 via a bearing. The output shaft of the motor 2 is fixedly mounted with the rotating rod 3 to drive the rotating rod 3 to rotate. The rotating rod 3 is rotatably connected to the frame 1 via a bearing. The frame 1 and the rotating rod 31 are rotatably connected via a bearing to ensure the stability of their rotation. Both the rotating rod 3 and the rotating rod 31 are made of stainless steel, which has the characteristics of corrosion resistance and high strength. The bearing can be a stainless steel deep groove ball bearing, which has the characteristics of high load capacity, corrosion resistance, low vibration, etc., and is suitable for high temperature environments.

[0034] To ensure uniform hot air distribution, the outer surface of the rotating rod 3 drives the rotating rod 31 to rotate via a bevel gear set. The blade 4 is fixedly installed on the outer surface of the front end of the rotating rod 31. A protective frame 41 is fixedly installed on the inner wall of the frame 1. The blade 4 is located inside the protective frame 41. The rotating rod 3 drives the rotating rod 31 to rotate via the bevel gear set. The rotating rod 31 is fixedly installed with the blade 4, causing the blade 4 to rotate synchronously. The blade 4 can be made of aluminum alloy, which has the characteristics of being lightweight, high temperature resistant, and corrosion resistant. It is fixedly installed with the frame 1 and the protective frame 41 to secure it. The blade 4 is located inside the protective frame 41 to protect it. The protective frame 41 is also made of aluminum alloy to reduce the weight of the device. The rotation speed of the blade 4 is usually 0.1-0.25 r / s to ensure uniform hot air distribution.

[0035] By setting up a circulation device, the hot air in the drive frame 1 is forced to circulate. The motor 2 drives the rotating rod 3 to rotate, and the rotating rod 3 drives the rotating rod 31 to rotate through the bevel gear set, which drives the blades 4 to rotate synchronously. The blades 4 are located inside the protective frame 41 to protect them. The rotation speed of the blades 4 is usually 0.1-0.25 r / s to ensure that the hot air is evenly distributed. This solves the technical problem in the prior art that the hot air cannot be evenly distributed inside the dryer, resulting in some areas overheating and burning, while other parts are not dried thoroughly due to insufficient temperature.

[0036] In order to adjust the number of exhaust holes 7, a drying device is provided inside the frame 1. The drying device includes an adjusting plate 72 and exhaust holes 7. The movement of the adjusting plate 72 adjusts the number of exhaust holes 7.

[0037] To deliver heated air to the conveyor rack 51, the drying device also includes a heat pump 5. The heat pump 5 is fixedly installed on the left side surface of the frame 1. The conveyor rack 51 is fixedly installed in the left side groove of the frame 1. The air outlet of the heat pump 5 is fixedly connected to the left end surface of the conveyor rack 51 through a pipe. The heat pump 5 is fixedly installed to the frame 1, and the frame 1 is fixedly installed to the conveyor rack 51. The air inlet of the heat pump 5 draws in air from the outside environment. The drawn-in air first passes through the evaporator, where the low-temperature heat is absorbed by the refrigerant. Then the refrigerant is compressed by the compressor, and its temperature and pressure increase. Next, the high-temperature and high-pressure refrigerant flows through the condenser, releasing heat to the air and raising the air temperature. The heated air is discharged through the air outlet of the heat pump 5 and is usually delivered to the conveyor rack 51 through a pipe. The model of the heat pump 5 can be Sahara KC-240RD / 8C, which has the advantages of energy saving, high efficiency, and stable operation.

[0038] To adjust the temperature of the hot air delivered by the heat pump 5 according to the heat required for drying the fruit, stainless steel drying racks 6 are slidably inserted into the grooves on both sides of the frame 1. Temperature sensors 61 and humidity sensors 62 are fixedly installed on the inner wall of the frame 1. The frame 1 is slidably inserted into the stainless steel drying racks 6, securing them without hindering their removal. The drying racks are located in the middle of the support rods of the conveyor frame 51, and the support rods have conveying holes for delivering hot air to the stainless steel drying racks 6. The frame 1 is fixed to the temperature sensors 61 and humidity sensors 62 to monitor the temperature and humidity inside the frame 1 in real time. The temperature sensor 61 transmits data to the control system. The control system drives the heat pump 5 through a program, thereby adjusting the temperature of the hot air delivered by the heat pump 5 according to the heat required for drying the fruit. For example, the temperature for apples is 50-60℃ to avoid browning caused by high temperature, and the temperature for oranges is 45-55℃ to maintain the vitamin C content. At the same time, the humidity sensor 62 transmits data to the control system, which can judge the drying process and adjust the speed of the fan motor 2 through a program. For example, when the humidity is high, the fan speed is increased to speed up dehumidification, and when the temperature is too high, the fan speed is reduced to prevent the material from overheating. The positions of the temperature sensor 61 and the humidity sensor 62 are not fixed and can be adjusted by the staff according to actual needs.

[0039] To prevent dust from entering the frame 1, a dehumidification hole 7 is located on the upper surface of the frame 1. A filter screen 71 is fixedly attached to the groove at the top of the frame 1, and the filter screen 71 is located below the dehumidification hole 7. An adjusting plate 72 is slidably inserted into the groove at the top of the frame 1. The dehumidification hole 7 is located above the frame 1 to facilitate the discharge of dust. The frame 1 and the filter screen 71 are fixedly attached, which not only secures them but also facilitates replacement. The filter screen 71 is also made of stainless steel. The location of the filter screen 71 below the dehumidification hole 7 prevents dust from entering the frame 1. The adjusting plate 72 is slidably inserted into the frame 1. The operator can move the adjusting plate 72 according to the humidity detected by the humidity sensor 62 to adjust the number of dehumidification holes 7. When not in use, this effectively prevents dust from entering the frame 1.

[0040] By setting up a drying device and adjusting the number of exhaust holes 7, the air inlet of the heat pump 5 draws in air from the external environment, and the heated air is discharged through the air outlet of the heat pump 5. The air is typically transported through pipes to the conveyor rack 51, which is located in the middle of the support rods. The support rods have conveying holes for delivering hot air to the stainless steel drying rack 6. The temperature sensor 61 transmits data to the control system, which drives the heat pump 5 through a program to adjust the temperature of the hot air delivered by the heat pump 5 according to the heat required for drying the fruit. Simultaneously, the humidity sensor 62 transmits data to the control system. The drying process can be judged, and the speed of the fan motor 2 can be adjusted through the program. The filter screen 71 is located below the exhaust hole 7 to prevent dust from entering the frame 1. The operator can move the adjustment plate 72 according to the humidity detected by the humidity sensor 62 to adjust the number of exhaust holes 7. When not in use, it can prevent dust from entering the frame 1. This solves the technical problem in the prior art that when drying fruits such as apples, strawberries, and oranges, different fruits or different drying stages of the same fruit have different humidity requirements, the number of exhaust holes 7 is fixed, and it is impossible to dynamically adjust the humidity discharge according to the moisture content of the material and the drying stage.

[0041] Working principle: When fruit needs to be dried, the staff moves the door panel on the frame 1, takes out the internally sliding stainless steel drying rack 6, lays the fruit to be dried flat on the stainless steel drying rack 6, puts it into the frame 1, moves the door panel to close the frame 1, starts the heat pump 5, and its air outlet delivers hot air to the conveyor rack 51 through the pipe, and then delivers it evenly to the stainless steel drying rack 6 through the conveying holes on the support rod of the conveyor rack 51 to dry the fruit.

[0042] During the drying process, temperature sensor 61 monitors the temperature inside frame 1 in real time and transmits the data to the control system. The control system adjusts the temperature of the hot air delivered by heat pump 5 according to the received temperature data. For example, for apples, the temperature is controlled at 50-60℃ to avoid browning caused by high temperature; for oranges, the temperature is controlled at 45-55℃ to maintain the vitamin C content.

[0043] When hot air circulation is required, the motor 2 is started to drive the rotating rod 3 to rotate. The rotating rod 3 drives the rotating rod 31 to rotate through the bevel gear set, which in turn drives the blades 4 on the rotating rod 31 to rotate. The rotation speed of the blades 4 is usually 0.1-0.25 r / s to ensure uniform distribution of hot air. At the same time, the control system adjusts the speed of the fan motor 2 in real time according to the humidity data detected by the humidity sensor 62 to achieve precise dehumidification control. For example, when the humidity is high, the air speed is increased to speed up dehumidification; when the temperature is too high, the air speed is reduced to prevent the material from overheating. The protective frame 41 protects the blades 4. The operator can move the adjustment plate 72 according to the humidity detected by the humidity sensor 62 to adjust the number of dehumidification holes 7. The filter screen 71 is located below the dehumidification holes 7 to prevent dust from entering the interior of the frame 1.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An energy-saving dryer for fruit drying, comprising a frame (1) with a door panel slidably inserted, characterized in that: The frame (1) is equipped with a circulation device, which includes blades (4). The rotation of the blades (4) drives the hot air inside the frame (1) to undergo forced convection circulation. The frame (1) is equipped with a drying device, which includes an adjusting plate (72) and a dehumidification hole (7). The number of dehumidification holes (7) is adjusted by moving the adjusting plate (72).

2. The energy-saving dryer for fruit drying according to claim 1, characterized in that: The circulation device also includes a motor (2), which is fixedly installed in the bottom groove of the frame (1), and the output shaft of the motor (2) is rotatably connected to the bottom groove of the frame (1) through a bearing seat.

3. The energy-saving dryer for fruit drying according to claim 2, characterized in that: The output shaft of the motor (2) is fixedly mounted with a rotating rod (3), which is rotatably connected to the top groove of the frame (1) via a bearing. The rear groove of the frame (1) is rotatably connected with a rotating rod (31) via a bearing.

4. The energy-saving dryer for fruit drying according to claim 3, characterized in that: The outer surface of the rotating rod (3) drives the rotating rod (31) to rotate through a bevel gear set. The blade (4) is fixedly installed on the outer surface of the front end of the rotating rod (31). A protective frame (41) is fixedly installed on the inner wall of the frame (1). The blade (4) is located inside the protective frame (41).

5. The energy-saving dryer for fruit drying according to claim 1, characterized in that: The drying device also includes a heat pump (5), which is fixedly installed on the left side surface of the frame (1). A conveyor frame (51) is fixedly installed in the left side groove of the frame (1). The air outlet of the heat pump (5) is fixedly connected to the left end surface of the conveyor frame (51) through a pipe.

6. The energy-saving dryer for fruit drying according to claim 1, characterized in that: Stainless steel drying racks (6) are slidably inserted into the grooves on both sides of the frame (1), and temperature sensor (61) and humidity sensor (62) are fixedly installed on the inner wall of the frame (1).

7. The energy-saving dryer for fruit drying according to claim 1, characterized in that: The dehumidification hole (7) is opened on the upper surface of the frame (1). A filter screen (71) is fixedly attached to the top groove of the frame (1). The filter screen (71) is located below the dehumidification hole (7). The adjusting plate (72) is slidably inserted into the top groove of the frame (1).

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