Microwave sterilization device and microwave sterilization method for solid dairy products

Abstract

The present invention provides a microwave sterilization device and microwave sterilization method for solid dairy products, wherein the device includes: a microwave sterilization device having a sterilization chamber, a first opening and a second opening connected to the sterilization chamber, and a plurality of microwave generators; the microwave generators are arranged at intervals on the top of the sterilization chamber, and the microwave emitting end of each microwave generator extends into the sterilization chamber; a solid dairy product arranging device for outputting solid dairy products arranged in an array; a conveyor belt, the feed end of the conveyor belt is connected to the discharge end of the solid dairy product arranging device, the discharge end of the conveyor belt extends into the sterilization chamber from the first opening and extends out of the sterilization chamber from the second opening; a heat equalizing device is provided in the sterilization chamber for uniformly distributing heat in the sterilization chamber. Using the microwave sterilization device for solid dairy products of the embodiment of the present invention for microwave sterilization can achieve uniform heating of the solid dairy products, achieve a high sterilization rate, and avoid scorching.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of dairy product sterilization, and in particular to a microwave sterilization device and a microwave sterilization method for solid dairy products. Background Art

[0002] In the food production process, sterilization is an important step in increasing food storage time and ensuring food safety and hygiene.

[0003] Microwave sterilization is commonly used to sterilize solid dairy products. Microwave sterilization offers significant advantages over traditional heat sterilization. For the same sterilization rate, microwave sterilization typically takes only 1 / 9 to 1 / 12 of the time of traditional heat pasteurization methods.

[0004] However, when using existing microwave sterilization devices to sterilize solid dairy products in batches, there is a problem of uneven heating of the solid dairy products. In addition, there is also a problem of low sterilization rate caused by uneven heating. For example, the sterilization rate of solid dairy products that are less heated is low, resulting in a low sterilization rate for the entire batch of solid dairy products, while solid dairy products that are highly heated are prone to burning. Summary of the Invention

[0005] The embodiments of the present invention provide a microwave sterilization device and a microwave sterilization method for solid dairy products, so as to solve the problem of uneven heating of solid dairy products when using existing microwave sterilization devices to perform batch sterilization of solid dairy products, and also the problems of low sterilization rate and burning caused by the uneven heating.

[0006] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0007] In a first aspect, an embodiment of the present invention provides a microwave sterilization device for solid dairy products, comprising:

[0008] A microwave sterilization device comprises a sterilization chamber, a first opening and a second opening communicating with the sterilization chamber, and a plurality of microwave generators; the microwave generators are arranged at intervals on the top of the sterilization chamber, and a microwave emitting end of each microwave generator extends into the sterilization chamber;

[0009] Solid dairy product array equipment, used to output solid dairy products arranged in an array;

[0010] a conveyor belt, wherein a feed end of the conveyor belt is connected to a discharge end of the solid dairy product arranging device, and the discharge end of the conveyor belt extends from the first opening into the sterilization chamber and extends from the second opening to outside the sterilization chamber;

[0011] The heat equalizing device is arranged in the sterilization chamber and is used to evenly distribute the heat in the sterilization chamber.

[0012] Optionally, the sterilization chamber includes a first chamber segment and a second chamber segment. The first opening is located in the first chamber segment, and the second opening is located in the second chamber segment;

[0013] The first chamber segment is composed of a plurality of first sub-chambers; two sets of microwave emitting units are provided at the top of each of the first sub-chambers;

[0014] The second chamber segment is composed of a plurality of second sub-chambers; one set of the microwave emitting units is provided at the top of each of the second sub-chambers;

[0015] Each set of the microwave emitting units includes: three microwave generators, and the three microwave generators are arranged in a "pin" shape.

[0016] Optionally,

[0017] The number d1 of the first sub-chambers satisfies: 2 ≤ d1 ≤ 5.

[0018] Optionally,

[0019] The number d2 of the second sub-chambers satisfies: 2 ≤ d2 ≤ 5.

[0020] Optionally,

[0021] The array arrangement is M rows × N columns, or N rows × M columns; both M and N are positive integers, and M:N = 3:2.

[0022] Optionally,

[0023] The solid dairy product aligning device includes:

[0024] A pressing roller, which has M or N forming molds arranged at intervals along its own length direction, and is used for batch forming and outputting solid dairy products in the form of the array arrangement, for batch forming and outputting solid dairy products in the form of the array arrangement.

[0025] Optionally,

[0026] The solid dairy product aligning device includes:

[0027] A pressing plate, the plate surface of which has forming molds arranged in the form of the array, and is used for batch forming and outputting solid dairy products in the form of the array arrangement.

[0028] Optionally, it further includes: a controller, a temperature sensor and a driving motor;

[0029] The temperature sensor is arranged in the sterilization chamber and is electrically connected to the temperature sensor; the temperature sensor is used for obtaining the temperature information of the solid dairy product and sending the temperature information to the controller;

[0030] The driving motor is used to drive the conveyor belt to move and is electrically connected to the controller;

[0031] The controller is used to receive the temperature information of the solid dairy product sent by the temperature sensor, determine the maximum temperature difference between the solid dairy products based on the temperature information, and determine whether the maximum temperature difference exceeds a preset temperature difference threshold; if it exceeds the temperature difference threshold, send a deceleration signal to the drive motor.

[0032] Optionally, it also includes:

[0033] The controller is also electrically connected to the microwave generator;

[0034] The controller is further configured to shut down a preset first number of microwave generators if the temperature difference threshold is exceeded and the lowest temperature of the solid dairy product is determined to be greater than a preset lowest temperature threshold based on the temperature information.

[0035] In a second aspect, an embodiment of the present invention provides a microwave sterilization method, which is applied to the microwave sterilization device as described in any one of the first aspects, and the method includes:

[0036] controlling the solid dairy product arranging device to arrange the solid dairy products into the array arrangement, and placing the solid dairy products arranged in the array at the feed end of the conveyor belt;

[0037] The conveyor belt is controlled to transport the solid dairy products arranged in the array into the sterilization chamber, and the microwave generator is turned on to perform microwave sterilization on the solid dairy products arranged in the array.

[0038] In the embodiments of the present invention, the solid dairy products are arranged in an array by providing a solid dairy product arranging device. This facilitates uniform microwave radiation to the solid dairy products within the sterilization chamber, thereby reducing temperature differences between the solid dairy products during microwave sterilization. Furthermore, the provision of a heat equalization device evenly distributes heat within the sterilization chamber, further reducing temperature differences between the solid dairy products during microwave sterilization. Using the microwave sterilization device for solid dairy products according to the embodiments of the present invention for microwave sterilization can achieve uniform heating of the solid dairy products, a high sterilization rate, and avoid scorching. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0040] Figure 1It is a side view schematic diagram of a microwave sterilization device for solid dairy products according to an embodiment of the present invention;

[0041] Figure 2 Schematic top view of a microwave sterilization device for solid dairy products according to an embodiment of the present invention;

[0042] Figure 3 To correspond to the attached Figure 1 A longitudinal cross-sectional schematic diagram of a microwave sterilization device for solid dairy products according to an embodiment of the present invention;

[0043] in:

[0044] 1. Microwave sterilization equipment; 10. Sterilization chamber; 101. First chamber section; 1011. First sub-chamber; 102. Second chamber section; 1021. Second sub-chamber; 11. First opening; 12. Second opening; 13. Microwave generator;

[0045] 2. Solid dairy product display equipment; 21. Discharge end of solid dairy product display equipment;

[0046] 3. Conveyor belt; 31. Feed end of conveyor belt; 32. Discharge end of conveyor belt;

[0047] 4. Heat distribution equipment; 5. Tray; 6. Controller; 7. Temperature sensor; 8. Drive motor. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] The embodiment of the present invention provides a microwave sterilization device for solid dairy products. Figures 1 to 3 As shown, the microwave sterilization device for solid dairy products includes:

[0050] The microwave sterilization device 1 comprises a sterilization chamber 10, a first opening 11 and a second opening 12 communicating with the sterilization chamber 10, and a plurality of microwave generators 13. The microwave generators 13 are arranged at intervals on the top of the sterilization chamber 10, and the microwave emitting end of each microwave generator 13 extends into the sterilization chamber 10.

[0051] Solid dairy product arranging equipment 2, used for outputting solid dairy products arranged in an array;

[0052] The conveyor belt 3 has a feed end 31 connected to the discharge end 21 of the solid dairy product arranging device, and a discharge end 32 of the conveyor belt extends from the first opening 11 into the sterilization chamber 10 and extends from the second opening 12 to the outside of the sterilization chamber 10;

[0053] The heat equalizing device 4 is provided in the sterilization chamber 10 and is used to evenly distribute the heat in the sterilization chamber 10 .

[0054] The microwave emitting end of each microwave generator 13 extends into the sterilization chamber 10 to radiate microwaves to the solid dairy product in the sterilization chamber 10 .

[0055] In actual application, in order to ensure that the solid dairy products are clean and pollution-free, a tray 5 is placed on the conveyor belt 3, and the solid dairy products arranged in an array output by the solid dairy product arranging equipment 2 are placed on the tray 5. The solid dairy products enter the sterilization chamber 10 with the tray 5 for microwave sterilization treatment.

[0056] Arrangement equipment is equipment used to arrange items in an orderly manner. In embodiments of the present invention, the solid dairy product arrangement equipment 2 is equipment that arranges solid dairy products in an array. In some embodiments, the solid dairy product arrangement equipment 2 may include: a palletizing robot, which uses a robotic arm to arrange solid dairy products in an array; in some embodiments, the solid dairy product arrangement equipment 2 may include: a solid dairy product forming equipment, in which the forming molds are arranged in an array, so that the formed solid dairy products are arranged in an array.

[0057] In some embodiments of the present invention, the heat equalizing device 4 may include: a fan and a motor for driving the fan, that is, the motor drives the fan to rotate to accelerate the airflow velocity in the sterilization chamber 10, thereby achieving uniform heat distribution in the sterilization chamber 10. In some embodiments, the heat equalizing device 4 may include: a heat equalizing tube coiled around the inner wall of the sterilization chamber 10, the liquid inlet end of the heat equalizing tube being connected to the liquid outlet end of a drive pump. When the drive pump is turned on, the drive pump injects liquid heat-conducting medium into the heat equalizing tube and drives the liquid heat-conducting medium to be discharged from the liquid outlet end of the heat equalizing tube. During the flow of the liquid heat-conducting medium in the heat equalizing tube, uniform heat distribution in the sterilization chamber 10 is achieved.

[0058] When solid dairy products need to be sterilized, the solid dairy product arranging device 2 is controlled to arrange the solid dairy products into an array, and the solid dairy products arranged in an array are placed on the feed end 31 of the conveyor belt; the conveyor belt 3 is controlled to transport the solid dairy products arranged in an array to the sterilization chamber 10, and the microwave generator 13 is turned on to perform microwave sterilization on the solid dairy products arranged in an array.

[0059] In the embodiments of the present invention, by arranging the solid dairy product alignment device 2 to align the solid dairy products in an array, it is beneficial for the solid dairy products to be evenly irradiated by microwaves in the sterilization chamber 10, reducing the temperature difference between the solid dairy products during microwave sterilization. Moreover, by arranging the heat equalization device 4 to evenly distribute the heat in the sterilization chamber 10, it is beneficial for further reducing the temperature difference between the solid dairy products during microwave sterilization. Using the microwave sterilization device for solid dairy products in the embodiments of the present invention for microwave sterilization can achieve uniform heating of the solid dairy products, achieve a high sterilization rate, and avoid the phenomenon of scorching.

[0060] In some embodiments of the present invention, optionally, refer to Figures 1 to 3 As shown, the sterilization chamber 10 includes a first chamber segment 101 and a second chamber segment 102. The first opening 11 is located in the first chamber segment 101, and the second opening 12 is located in the second chamber segment 102;

[0061] The first chamber segment 101 is composed of a plurality of first sub-chambers 1011; two groups of microwave emitting units are provided at the top of each first sub-chamber 1011;

[0062] The second chamber segment 102 is composed of a plurality of second sub-chambers 1021; one group of microwave emitting units is provided at the top of each second sub-chamber 1021;

[0063] Each group of microwave emitting units includes: three microwave generators 13, and the three microwave generators 13 are arranged in a "pin" shape.

[0064] In the embodiments of the present invention, by arranging two groups of microwave emitting units (6 microwave emitters 13) at the top of the first sub-chamber 1011 close to the solid dairy product alignment device 2, and combining with one group of the microwave emitting units (3 microwave emitters 13) provided at the top of the second sub-chamber 1021, it can further promote the solid dairy products to be evenly irradiated by microwaves in the sterilization chamber 10, reduce the temperature difference between the solid dairy products during microwave sterilization, and achieve a high sterilization rate.

[0065] The following is illustrated with measured data:

[0066] Example 1:

[0067] A microwave sterilization device, wherein the sterilization chamber comprises a first chamber section and a second chamber section, with a first opening located in the first chamber section and a second opening located in the second chamber section; the first chamber section comprises four first sub-chambers, each of which is topped by two sets of microwave emitting units; the second chamber section comprises four second sub-chambers, each of which is topped by a set of microwave emitting units, each set of microwave emitting units comprising three microwave generators arranged in a "pin" shape. The microwave power is 0.675 kW, and the conveyor speed is 3.48 m / min. The milk bars (equivalent to the solid dairy product in this embodiment of the present invention) are arranged on the tray in 12 rows by 8 columns.

[0068] Comparative Example 1:

[0069] A microwave sterilization device, wherein the sterilization chamber consists of eight sub-chambers, each with a microwave emitting unit mounted on top. Each microwave emitting unit includes three microwave generators arranged in a "pin" shape. The microwave power is 0.675 kW, and the conveyor speed is 3.48 m / min. Milk bars (equivalent to the solid dairy product in this embodiment of the present invention) are arranged on the tray in 12 rows by 8 columns.

[0070] Comparative Example 2:

[0071] A microwave sterilization device, wherein the sterilization chamber comprises a first chamber section and a second chamber section, with a first opening located in the first chamber section and a second opening located in the second chamber section; the first chamber section comprises four first sub-chambers; the top of each first sub-chamber is equipped with six microwave generators arranged in a "I" shape; the second chamber section comprises four second sub-chambers; the top of each second sub-chamber is equipped with a group of microwave emitting units, each group of microwave emitting units comprising three microwave generators arranged in a "pin" shape. The microwave power is 0.675 kW, the conveyor belt speed is 3.48 m / min, and the milk bars (equivalent to the solid dairy product in the embodiments of the present invention) are arranged on the tray in 12 rows by 8 columns.

[0072] The measured results are shown in Table 1:

[0073] Table 1 Bactericidal effect comparison table 1

[0074]

[0075] The sterilization effect is the average sterilization rate, which is the average sterilization rate of all milk bars. The sterilization rate indicates the degree of reduction in the number of bacteria or viruses after sterilization within a certain period of time. Log4 means a sterilization rate of 99.99%; Log3 means a sterilization rate of 99.9%; and Log2 means a sterilization rate of 99%.

[0076] Compared with Example 1, Comparative Example 2 and Comparative Example 3, the total number of microwave generators in Comparative Example 1 is 24, which is less than the total number of 36 microwave generators in Example 1 and Comparative Example 2. Among the three, Comparative Example 1 has the largest temperature difference in microwave sterilization, the worst sterilization effect, and the poor appearance of the material.

[0077] Compared with Example 1 and Comparative Example 2, only the arrangement of the three microwave generators provided at the top of the first sub-chamber is different. In Example 1, it is in a "pin" shape, and in Comparative Example 2, it is in a "one" shape. It can be obtained that: compared with Comparative Example 2, Example 1 has a smaller temperature difference in microwave sterilization, a better sterilization effect, and better sensory properties of the material, which can further promote the uniform microwave radiation of solid dairy products in the sterilization chamber 10, reduce the temperature difference between solid dairy products during microwave sterilization, and achieve a high sterilization rate.

[0078] In the embodiments of the present invention, optionally, the number d1 of the first sub-chambers 1011 satisfies: 2 ≤ d1 ≤ 5. The number d1 of the first sub-chambers 1011 satisfying 2 ≤ d1 ≤ 5 can reduce the procurement cost while ensuring a high sterilization rate, and is more suitable for installation in narrow sites.

[0079] In the embodiments of the present invention, optionally, the number d2 of the second sub-chambers 1021 satisfies: 2 ≤ d2 ≤ 5. The number d2 of the second sub-chambers 1021 satisfying 2 ≤ d2 ≤ 5 can reduce the procurement cost while ensuring a high sterilization rate, and is more suitable for installation in narrow sites.

[0080] In some embodiments of the present invention, optionally, [[ID=IS=13]]

[0081] The array arrangement is M rows × N columns, or N rows × M columns; both M and N are positive integers, and M:N = 3:2.

[0082] The following is illustrated with actual measurement data:

[0083] Based on Example 1 above, the following examples and comparative examples are further set:

[0084] Example 2:

[0085] A microwave sterilization device, wherein the sterilization chamber includes a first chamber section and a second chamber section, the first opening is located in the first chamber section, and the second opening is located in the second chamber section; the first chamber section is composed of 4 first sub-chambers; two groups of microwave emission units are provided at the top of each first sub-chamber;; one group of microwave emission units is provided at the top of each second sub-chamber, and each group of microwave emission units includes: three microwave generators and the three microwave generators are arranged in a "pin" shape. The microwave power is 0.675 kw, and the conveyor belt speed is 3.48 m / min; the placement method of milk bars (i.e., equivalent to the solid dairy products in the embodiments of the present invention) on the tray is arranged in 8 rows × 12 columns.

[0086] Comparative Example 3:

[0087] A microwave sterilization device, wherein the sterilization chamber comprises a first chamber section and a second chamber section, with a first opening located in the first chamber section and a second opening located in the second chamber section; the first chamber section comprises four first sub-chambers; the top of each first sub-chamber is equipped with two sets of microwave emitting units; the top of each second sub-chamber is equipped with a set of microwave emitting units, each set of microwave emitting units comprising three microwave generators arranged in a "pin" shape. The microwave power is 0.675 kW, and the conveyor speed is 3.48 m / min. The milk bars (equivalent to the solid dairy product in this embodiment of the present invention) are arranged on the tray in 14 rows by 8 columns.

[0088] Comparative Example 4:

[0089] A microwave sterilization device, wherein the sterilization chamber comprises a first chamber section and a second chamber section, with a first opening located in the first chamber section and a second opening located in the second chamber section; the first chamber section comprises four first sub-chambers; the top of each first sub-chamber is equipped with two sets of microwave emitting units; the top of each second sub-chamber is equipped with a set of microwave emitting units, each set of microwave emitting units comprising three microwave generators arranged in a "pin" shape. The microwave power is 0.675 kW, and the conveyor speed is 3.48 m / min. The milk bars (equivalent to the solid dairy product in this embodiment of the present invention) are arranged on the tray in 10 rows by 8 columns.

[0090] Comparative Example 5:

[0091] A microwave sterilization device, wherein the sterilization chamber comprises a first chamber section and a second chamber section, with a first opening located in the first chamber section and a second opening located in the second chamber section. The first chamber section is composed of four first sub-chambers. Two sets of microwave emitting units are located at the top of each first sub-chamber. Each set of microwave emitting units is located at the top of each second sub-chamber. Each set of microwave emitting units includes three microwave generators arranged in a "pin" shape. The microwave power is 0.675 kW, and the conveyor speed is 3.48 m / min. The milk bars (equivalent to the solid dairy product in this embodiment of the present invention) are arranged on the tray in 8 rows by 10 columns.

[0092] The measured results are shown in Table 2:

[0093] Table 2 Bactericidal effect comparison table 2

[0094]

[0095] The sterilization effect is the average sterilization rate, which is the average sterilization rate of all milk bars. The sterilization rate indicates the degree of reduction in the number of bacteria or viruses after sterilization within a certain period of time. Log4 means a sterilization rate of 99.99%; Log3 means a sterilization rate of 99.9%; and Log2 means a sterilization rate of 99%.

[0096] Compared with the milk bar arrangement in Comparative Examples 3-5, Examples 1 and 2 adopt the array arrangement of the embodiments of the present invention, which has a smaller microwave sterilization temperature difference, better sterilization effect, and better material sensory experience. It can further promote the solid dairy products to be uniformly irradiated by microwaves in the sterilization chamber 10, reduce the temperature difference between solid dairy products during microwave sterilization, and achieve a high sterilization rate.

[0097] In some embodiments of the present invention, optionally, M is 12 and N is 8, which can better promote uniform microwave radiation of solid dairy products in the sterilization chamber 10, reduce the temperature difference between solid dairy products during microwave sterilization, and achieve a high sterilization rate.

[0098] In some embodiments of the present invention, optionally, the solid dairy product arranging device 2 includes:

[0099] The pressing roller (not shown in the figure) has M or N forming molds arranged at intervals along its own length, which is used for batch forming and outputting solid dairy products arranged in an array, and is used for batch forming and outputting solid dairy products arranged in an array.

[0100] In actual applications, when the pressure roller (not shown in the figure) has M forming dies arranged at intervals along its own length, the pressure roller (not shown in the figure) forms the dairy product N times during the forming process (for example, it rotates N times and forms M pieces per circle) to obtain solid dairy products arranged in an array of M rows × N columns. In actual applications, when the pressure roller (not shown in the figure) has N forming dies arranged at intervals along its own length, the pressure roller (not shown in the figure) forms the dairy product M times during the forming process (for example, it rotates M times and forms N pieces per circle) to obtain solid dairy products arranged in an array of N rows × M columns. The embodiment of the present invention combines the forming and arranging of solid dairy products by providing a pressure roller (not shown in the figure), which can simplify the production process of solid dairy products and improve production efficiency on the basis of ensuring a high sterilization rate; it can be understood that users no longer need to pay for the cost of setting up a separate forming equipment, thereby reducing costs.

[0101] In some embodiments of the present invention, optionally, the solid dairy product arranging device 2 includes:

[0102] A pressing plate (not shown) has a surface with forming dies arranged in an array, which is used to batch-form and output solid dairy products arranged in an array. By providing a pressing plate (not shown), the present invention combines the forming and arranging of solid dairy products. This simplifies the production process of solid dairy products while ensuring a high sterilization rate, improving production efficiency. This eliminates the need for users to pay for separate forming equipment, reducing costs.

[0103] In some embodiments of the present invention, optionally, see Figures 1 to 3 As shown, it also includes: a controller 6, a temperature sensor 7 and a drive motor 8;

[0104] The temperature sensor 7 is provided in the sterilization chamber 10 and is electrically connected to the temperature sensor 7; the temperature sensor 7 is used to obtain temperature information of the solid dairy product and send the temperature information to the controller 6;

[0105] A drive motor 8 is used to drive the conveyor belt 3 to move and is electrically connected to the controller 6;

[0106] The controller 6 is used to receive the temperature information of the solid dairy product sent by the temperature sensor 7, determine the maximum temperature difference between the solid dairy products based on the temperature information, and determine whether the maximum temperature difference exceeds a preset temperature difference threshold; if it exceeds the temperature difference threshold, send a deceleration signal to the drive motor 8.

[0107] In actual application, the power output end of the drive motor 8 is connected to the conveyor belt 3 through a transmission structure such as a gear or a transmission belt. When the drive motor 8 is turned on, the conveyor belt 3 is driven by the transmission structure. The speed of the conveyor belt 3 can be adjusted by controlling the output power of the drive motor 8, thereby adjusting the sterilization time of the solid dairy product and changing the temperature of the solid dairy product.

[0108] Figure 1 In the embodiment, the controller 6 is located on one side of the outer shell of the microwave sterilizer 1, making it easier for users to debug and maintain the device. In actual applications, the controller 6 can be set up remotely, for example, to remotely receive temperature information from the temperature sensor 7 and remotely control the drive motor 8 via a wireless network, reducing the tedious operation of on-site wiring.

[0109] In the embodiment of the present invention, the temperature sensor 7 includes: an infrared temperature sensor, which can obtain temperature information of each solid dairy product, generate and output a thermal infrared image to the controller 6 based on the temperature information.

[0110] Some embodiments of the present invention may optionally further include:

[0111] The controller 6 is also electrically connected to the microwave generator 13;

[0112] The controller 6 is further configured to turn off a preset first number of microwave generators 13 if the temperature difference threshold is exceeded and the determined lowest temperature of the solid dairy product is greater than a preset lowest temperature threshold.

[0113] In an embodiment of the present invention, by providing the controller 6, when the lowest temperature of the solid dairy product is greater than the preset lowest temperature threshold, the preset first number of microwave generators 13 are turned off, which can effectively control the overheating of the solid dairy product and ensure the quality of the solid dairy product.

[0114] An embodiment of the present invention further provides a microwave sterilization method, which is applied to any microwave sterilization device of the embodiments of the present invention. The method includes:

[0115] Step S11: Control the solid dairy product alignment device 2 to align the solid dairy products into the array arrangement, and place the solid dairy products in the array arrangement at the feeding end 31 of the conveyor belt.

[0116] Step S12: Control the conveyor belt 3 to convey the solid dairy products in the array arrangement to the sterilization chamber 10, and turn on the microwave generators 13 to perform microwave sterilization treatment on the solid dairy products in the array arrangement.

[0117] In an embodiment of the present invention, by controlling the solid dairy product alignment device 2 to align the solid dairy products into the array arrangement, placing the solid dairy products in the array arrangement at the feeding end 31 of the conveyor belt, controlling the conveyor belt 3 to convey the solid dairy products in the array arrangement to the sterilization chamber 10, and turning on the microwave generators 13 to perform microwave sterilization treatment on the solid dairy products in the array arrangement, the temperature difference between the solid dairy products during microwave sterilization can be reduced, the uniform heating of the solid dairy products can be achieved, and a high sterilization rate can be realized.

[0118] In some embodiments of the present invention, optionally,

[0119] The sterilization chamber includes a first chamber segment and a second chamber segment. The first opening is located in the first chamber segment, and the second opening is located in the second chamber segment.

[0120] The first chamber segment is composed of multiple first sub-chambers; two groups of microwave emission units are provided at the top of each of the first sub-chambers.

[0121] The second chamber segment is composed of multiple second sub-chambers; one group of the microwave emission units is provided at the top of each of the second sub-chambers.

[0122] Each group of the microwave emission units includes: three microwave generators, and the three microwave generators are arranged in a "pin" shape.

[0123] In some embodiments of the present invention, optionally,

[0124] The number d1 of the first sub-chambers satisfies: 2≤d1≤5.

[0125] In some embodiments of the present invention, optionally,

[0126] The number d2 of the second sub-chambers satisfies: 2≤d2≤5.

[0127] In some embodiments of the present invention, optionally,

[0128] The array is arranged in M ​​rows×N columns, or N rows×M columns; M and N are both positive integers, and M:N=3:2.

[0129] In some embodiments of the present invention, optionally,

[0130] The solid dairy product whole array equipment comprises:

[0131] A pressing roller having M or N forming dies arranged at intervals along its length direction, for batch forming and outputting solid dairy products arranged in the array, for batch forming and outputting solid dairy products arranged in the array.

[0132] In some embodiments of the present invention, optionally,

[0133] The solid dairy product whole array equipment comprises:

[0134] A pressing plate, the plate surface of which has forming dies arranged in the array, is used for batch forming and outputting solid dairy products arranged in the array.

[0135] In some embodiments of the present invention, optionally,

[0136] Also includes: controller, temperature sensor and drive motor;

[0137] The temperature sensor is provided in the sterilization chamber and is electrically connected to the temperature sensor; the temperature sensor is used to obtain temperature information of the solid dairy product and send the temperature information to the controller;

[0138] The driving motor is used to drive the conveyor belt to move and is electrically connected to the controller;

[0139] The controller is used to receive the temperature information of the solid dairy product sent by the temperature sensor, determine the maximum temperature difference between the solid dairy products based on the temperature information, and determine whether the maximum temperature difference exceeds a preset temperature difference threshold; if it exceeds the temperature difference threshold, send a deceleration signal to the drive motor.

[0140] Some embodiments of the present invention may optionally further include:

[0141] The controller is also electrically connected to the microwave generator;

[0142] The controller is further configured to shut down a preset first number of microwave generators if the temperature difference threshold is exceeded and the lowest temperature of the solid dairy product is determined to be greater than a preset lowest temperature threshold based on the temperature information.

[0143] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A microwave sterilization device for solid dairy products, characterized in that: Comprising: A microwave sterilization device, having a sterilization chamber, a first opening and a second opening communicating with the sterilization chamber, and a plurality of microwave generators; The microwave generators are arranged at intervals on the top of the sterilization chamber, and the microwave emission ends of each of the microwave generators extend into the sterilization chamber; A solid dairy product alignment device for outputting solid dairy products arranged in an array; A conveyor belt, the feeding end of the conveyor belt is connected to the discharging end of the solid dairy product alignment device, and the discharging end of the conveyor belt extends into the sterilization chamber from the first opening and extends out of the sterilization chamber from the second opening; A heat equalization device is arranged in the sterilization chamber for uniformly distributing the heat in the sterilization chamber; The sterilization chamber includes a first chamber section and a second chamber section, the first opening is located in the first chamber section, and the second opening is located in the second chamber section; The first chamber section is composed of a plurality of first sub-chambers; two groups of microwave emission units are arranged on the top of each of the first sub-chambers; The second chamber section is composed of a plurality of second sub-chambers; one group of the microwave emission units is arranged on the top of each of the second sub-chambers; Each group of the microwave emission units includes: three microwave generators, and the three microwave generators are arranged in a "pin" shape.

2. The microwave sterilization device according to claim 1, wherein The number d1 of the first sub-chambers satisfies: 2 ≤ d1 ≤ 5.

3. The microwave sterilization device according to claim 1 or 2, wherein The number d2 of the second sub-chambers satisfies: 2 ≤ d2 ≤ 5.

4. The microwave sterilization device according to claim 1, wherein The array arrangement is M rows × N columns, or N rows × M columns; both M and N are positive integers, and M:N = 3:

2.

5. The microwave sterilization device according to claim 4, wherein The solid dairy product alignment device includes: A pressing roller, the pressing roller has M or N forming molds arranged at intervals along its own length direction, and is used for batch forming and outputting solid dairy products arranged in the array.

6. The microwave sterilization device according to claim 4, wherein The solid dairy product alignment device includes:

7. The microwave sterilization device according to claim 1, characterized in that: A pressing plate, the plate surface of the pressing plate has forming molds arranged in the array, and is used for batch forming and outputting solid dairy products arranged in the array. It further includes: A controller, a temperature sensor and a driving motor; The temperature sensor is arranged in the sterilization chamber and is electrically connected to the controller; the temperature sensor is used for obtaining the temperature information of the solid dairy product and sending the temperature information to the controller; The driving motor is used for driving the conveyor belt to move and is electrically connected to the controller; The controller is used for receiving the temperature information of the solid dairy product sent by the temperature sensor, determining the maximum temperature difference between the solid dairy products according to the temperature information, and determining whether the maximum temperature difference exceeds a preset temperature difference threshold; 8. The microwave sterilization device according to claim 7, characterized in that: If it exceeds the temperature difference threshold, a deceleration signal is sent to the driving motor. It further includes: The controller is also electrically connected to the microwave generator; The controller is further configured to shut down a preset first number of microwave generators if the temperature difference threshold is exceeded and the lowest temperature of the solid dairy product is determined to be greater than a preset lowest temperature threshold based on the temperature information.

9. A microwave sterilization method, characterized in that: Applied to the microwave sterilization device according to any one of claims 1 to 8, the method comprises: controlling the solid dairy product arranging device to arrange the solid dairy products into the array arrangement, and placing the solid dairy products arranged in the array at the feed end of the conveyor belt; The conveyor belt is controlled to transport the solid dairy products arranged in the array into the sterilization chamber, and the microwave generator is turned on to perform microwave sterilization on the solid dairy products arranged in the array.

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