TWI700996B - Compound food continuous drying equipment - Google Patents

Abstract

The present invention uses a conveying device to control the combined drying of food through an oven and a microwave device in sequence. The aforementioned conveyor device is composed of a first conveyor belt matching the oven and a second conveyor belt matching the microwave device. The present invention controls the speed of the first conveyor belt to be greater than the speed of the second conveyor belt, so that the first conveyor belt and the oven can be aligned first The food is quickly dried to a moisture content of about 10-14%, and then the second conveyor belt and microwave device can continue to slow down the drying of the food to a moisture content of about 6-8%. According to this, the conveying device is combined with the oven and the microwave device to complementally dry and sterilize the food, so as to effectively limit the food microorganisms to the legal requirements under the economic principle.

Description

Compound food continuous drying equipment

The invention relates to the technical field of controlling the compound drying of food through an oven and a microwave device in sequence.

According to the amendment to the sanitary standards of raw and cooked mixed ready-to-eat foods stipulated by the Ministry of Sui Shi Zi No. 1021350146 on August 20, 102 of the Republic of China, the microbial limit of the E. coli group (MPN/g) is 103 or less.

As for the raw and cooked mixed ready-to-eat foods seen on the market, the drying and sterilization is either a single oven heating production line or a single microwave processing production line.

If the oven heating production line is used alone, the raw and cooked food mixed ready-to-eat food will have more problems with the residual flora, and it is difficult to meet the above-mentioned regulatory requirements. If the microwave processing production line is used alone, the overall installation cost remains high, and the working efficiency of food drying and sterilization has technical difficulties that cannot be further improved.

In view of this, the inventor of the present invention has been working hard to develop the present invention through continuous conception, innovation and research.

The invention provides a composite continuous food drying equipment, the main If a conveying device is used, the food is controlled to dry to about 10-14% moisture in the oven in the first stage, and then dried to about 6-8% moisture in the second stage with a microwave device.

This oven and microwave device is a consistent composite drying method, which can effectively improve the shortcomings of conventional ovens or microwave devices. After actual tests, the sterilization degree of the present invention can meet the above-mentioned regulations and standards. It is indeed effective for raw and cooked food mixed instant food. The novel technology of drying and sterilization is correct.

E‧‧‧Main Electric Box

10‧‧‧Oven

11‧‧‧Electric heater

12‧‧‧Fan Module

13‧‧‧Temperature control module

20‧‧‧Microwave device

21‧‧‧Microwave generator

22‧‧‧Microwave Control Module

30‧‧‧Conveying device

31‧‧‧The first conveyor belt

311‧‧‧First Motor

312‧‧‧First frequency converter

32‧‧‧Second conveyor belt

321‧‧‧Second Motor

322‧‧‧Second Inverter

Figure 1 is a schematic diagram of the arrangement of the conveying device, oven and microwave device of the present invention.

Figure 2 is a block diagram of the circuit of the present invention.

Please refer to Figures 1 and 2, the present invention includes: an oven 10 with an electric heater 11, a fan module 12, and a temperature control module 13 installed in appropriate positions to control the circulating hot air and far infrared rays generated inside the oven 10 The temperature control module 13 is set to maintain the temperature of the hot air at about 125°C, which is sufficient to produce the desired drying and sterilization effect; the aforementioned electric heater 11 is electrically connected to the main electric box E through the temperature control module 13, as The fan module 12 is directly electrically connected to the main electric box E, so that the electric heater 11 and the fan module 12 are arranged in parallel to the main electric box E, so that the main electric box E can set the hot air temperature of the oven 10, which is particularly Explain that the aforementioned electric heater 11 can be replaced with a gas burner; a microwave device 20, which has a microwave generator 21 installed inside, and the microwave generator 21 is electrically connected through a microwave control module 22 To the main electric box E, the main electric box E can set the power of the microwave generator 21; and a conveying device 30, which is formed by the first conveyor belt 31 matching the oven 10 and the second conveyor belt 32 matching the microwave device 20 The composition of the first conveyor belt 31 is greater than the length of the second conveyor belt 32 to control the sequential drying and sterilization of food through the oven 10 and the microwave device 20. The aforementioned first conveyor belt 31 is equipped with a first motor 311 and a first The inverter 312 controls the speed. The first motor 311 is electrically connected to the main electrical box E through the first inverter 312. As for the second conveyor belt 32, the second motor 321 and the second inverter 322 To coordinate and control the speed, the second motor 321 is electrically connected to the main electric box E through the second inverter 322, so that the main electric box E can control the speed of the first conveyor belt 31 to be greater than that of the second conveyor belt 32 Speed, so that the first conveyor belt 31 and the oven 10 can quickly dry the food to a moisture content of about 10-14%, and then the second conveyor belt 32 and the microwave device 20 can continue to slow down the drying of the food to the moisture content About 6-8%.

Please refer to Figure 1 again. In the present invention, the hot air temperature of the oven 10, the speed of the first conveyor belt 31, the speed of the second conveyor belt 32, and the power of the microwave generator 21 are set through the current switch of the main electric box E. The controlled food is sequentially subjected to compound drying and sterilization through the oven 10 and the microwave device 20, and the overall operation or adjustment is quite simple.

Therefore, the present invention has at least the following improvements:

1. The food controlled by the present invention is dried to a moisture content of about 10-14% through an oven in the first stage, followed by drying to a moisture content of about 10-14% with a microwave device in the second stage 6-8%. According to the actual test, the present invention can reduce the food microbial limit to (MPN/g) 103 or less, so it can meet the above-mentioned regulations and standards to overcome the problem of insufficient sterilization capacity of the oven alone, and can greatly shorten the microwave device Time for separate drying and sterilization.

2. The present invention can flexibly adjust the oven hot air temperature, the speed of the first conveyor belt, the speed of the second conveyor belt, and the power of the microwave generator under the different texture and shape of the raw materials of the food to meet the above-mentioned regulations and standards, so the scope of application Quite broad.

3. When the present invention is combined drying and sterilizing through an oven and a microwave device, the taste of the food can be more diverse and rich.

From the above description, it is clear that the present invention has the above-mentioned effect enhancements, and it is indeed a very outstanding and excellent design; furthermore, the structural designer disclosed in the present invention has not been disclosed firstly with the same or similar ones, but sufficient Applicable to the application requirements of an invention patent, the application shall be filed in accordance with the law. However, the above is only a preferred embodiment of the present invention, and when it cannot be used to limit its scope of implementation, that is, all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention should still be covered by the present invention. Within the range.

E‧‧‧Main Electric Box

10‧‧‧Oven

11‧‧‧Electric heater

12‧‧‧Fan Module

13‧‧‧Temperature control module

20‧‧‧Microwave device

21‧‧‧Microwave generator

22‧‧‧Microwave Control Module

311‧‧‧First Motor

312‧‧‧First frequency converter

321‧‧‧Second Motor

322‧‧‧Second Inverter

Claims (8)

A composite food continuous drying equipment, which at least includes: an oven; a microwave device; and a conveyor device, which is composed of a first conveyor belt matching the oven and a second conveyor belt matching the microwave device, and the first The speed of the conveyor belt is greater than that of the second conveyor belt, and the length of the first conveyor belt is further controlled to be greater than the length of the second conveyor belt, so that the food can be controlled to pass through the oven and the microwave device in order, so that the oven can treat the food first Dry to a moisture content of about 10-14%, and then, the microwave device can continue to slow down the drying of the food to a moisture content of about 6-8%. For the composite food continuous drying equipment described in claim 1, the first conveyor belt is further equipped with a first motor and a first frequency converter, and the second conveyor belt is additionally equipped with a second motor and a second frequency converter. In the compound continuous food drying equipment described in claim 2, the oven is equipped with an electric heater, a fan module and a temperature control module to control the circulating hot air and far infrared rays generated inside the oven. For the compound continuous food drying equipment described in claim 3, the electric heater is electrically connected to a main electric box through a temperature control module, and the fan module is directly electrically connected to the main electric box, so that The electric heater and the fan module are arranged in parallel to the main electric box. According to the compound continuous food drying equipment described in claim 3, the temperature control module controls the circulating hot air to be maintained at about 125°C. According to the compound continuous food drying equipment described in claim 1, the oven is equipped with a gas burner, a fan module and a temperature control module to control the circulating hot air and far infrared rays generated inside the oven. According to the compound continuous food drying equipment described in claim 6, the temperature control module controls the circulating hot air to be maintained at about 125°C. According to the composite food continuous drying equipment of claim 1, a microwave generator is installed inside the microwave device, and the microwave generator is electrically connected to a main electric box through a microwave control module.

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