JPH10321363A - Microwave heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microwave heating device capable of almost uniformly heating an object to be heated by effectively suppressing uneven heating of the object to be heated in which liquid or the like is contained conveyed in a microwave oven. SOLUTION: A microwave heating device has a microwave oven 4 connected to a microwave oscillator through a connecting wave guide tube, and a chain conveyer 6 passing and extending through the microwave oven 4 and covering a bag 5 in which liquid is contained into the microwave oven 4. A holder 7 for swingably supporting both end parts of the bag 5 in which liquid is contained at given intervals is formed in the conveyer 6. A bar 9 extending along the conveying direction of the chain conveyer 6 is arranged on the top of the chain conveyer 6, and a stopper 8 for swinging the liquid containing bag 5 in contact with the top of the bag 5 is movably fixed to the bar 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave heating apparatus, and more particularly to a microwave heating apparatus for heating an object to be heated such as a bag containing a liquid conveyed by a conveyor such as a conveyor.

[0002]

2. Description of the Related Art Conventionally, there has been known a microwave heating apparatus for heating an object to be heated such as a bag containing liquid conveyed by a conveyor such as a conveyor. As shown in FIGS. 5 and 6, such a microwave heating device includes a microwave oscillator 1 for generating microwaves, and a microwave oscillator 1 connected to the microwave oscillator 1 via a connection waveguide 2. Oven 4
And extends through the microwave oven 4 and in the microwave oven 4, a bag (liquid to be heated) 5 containing a liquid.
And a chain conveyor (transportation device) 6 for transporting the same.

[0003] The chain conveyor 6 is provided with holders 7 for swingably supporting both ends of the liquid-containing bag 5 at predetermined pitches. Also microwave oven 4
In the casing 4a to which the connection waveguide 2 is connected
A stirrer 3 for stirring the microwave supplied from the connection waveguide 2 and an illumination box 13 for illuminating the inside of the oven 4 are provided on the upper surface of the.

In the microwave heating apparatus shown in FIGS. 5 and 6, a holder 7 provided on a chain conveyor 6 is conveyed in a microwave oven 4 and microwaves generated by a microwave oscillator 1 are connected. It is sent into the microwave oven 4 via the waveguide 2. In addition,
The microwaves thus sent are diffused in the microwave oven 4 by the rotation of the stirrer 3.

[0005] Here, the liquid-containing bags 5 are sequentially placed on the holder 7 provided on the chain conveyor 6 before the holder 7 is conveyed into the microwave oven 4, and the liquid thus placed is placed. The containing bag 5 moves in the microwave oven 4 while being in an upright state as shown in FIG. In the process of moving the liquid-containing bag 5 in this manner, the liquid-containing bag 5 is heated by being irradiated with microwaves supplied from the upper surface of the casing 4a via the connection waveguide 2.

[0006]

As described above, in the conventional microwave heating apparatus, the bag 5 containing liquid conveyed by the chain conveyor 6 is connected to the microwave oven 4 via the connection waveguide 2 in the microwave oven 4. The casing 4a is heated by being irradiated with microwaves supplied from the upper surface thereof.
However, in the conventional microwave heating device, the bag 5 containing the liquid conveyed by the chain conveyor 6 is not shown in FIG.
, The temperature of the upper portion and the lower portion of the liquid in the liquid bag 5 differs due to the so-called bath effect, and the liquid bag 5
There is a problem in that the temperature of the upper part of the liquid inside becomes significantly higher than the temperature of the lower part.

[0007] The present invention has been made in view of such a point, and effectively suppresses uneven heating of an object to be heated containing a liquid or the like conveyed in a microwave oven and reduces the unevenness of the object to be heated. It is an object of the present invention to provide a microwave heating device capable of heating substantially uniformly.

[0008]

According to the present invention, there is provided a microwave oscillator for generating microwaves, a microwave oven connected to the microwave oscillator via a waveguide, and a microwave oven in the microwave oven. A transfer device for transferring the object to be heated, wherein the transfer device is provided with a holder for swingably supporting the object to be heated, and the object to be heated supported by the holder is swung in the microwave oven. Provided is a microwave heating device provided with a rocking means for moving.

According to the present invention, a holder for swingably supporting an object to be heated is provided in the transfer device, and a swing means for swinging the object to be heated is provided in a microwave oven through which the transfer device passes. The object to be heated can be swung in the process of moving the object to be heated in the microwave oven, thereby effectively suppressing uneven heating of the object to be heated containing liquid or the like. Can be heated almost uniformly.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing an embodiment of a microwave heating apparatus according to the present invention.

First, the entire microwave heating apparatus will be described with reference to FIG. As shown in FIG. 3, the microwave heating device includes a plurality of microwave oscillators 1 that generate microwaves, and a plurality of microwave ovens connected to each of the microwave oscillators 1 via a connection waveguide 2. 4 and a chain conveyor (conveying device) that extends through the plurality of microwave ovens 4 and conveys a liquid-containing bag (heated object) 5 containing a liquid such as a chemical solution in the plurality of microwave ovens 4. And 6).

Here, the plurality of microwave ovens 4 are arranged in a row with adjacent ones connected to each other.
At the ends of the plurality of microwave ovens 4 arranged in a row in this manner, a microwave trap 10 for preventing microwaves from leaking from the microwave oven 4 is provided.

The chain conveyor 6 has a first roller 6a and a second roller 6b on which a chain is stretched.
The drive device 11 for operating the chain conveyor 6 continuously or intermittently is connected to the second roller 6b. The chain conveyor 6 is provided with holders 7 for swingably supporting both ends of the liquid bag 5 at a predetermined pitch, and the liquid conveyor bag 5 is turned below the second roller 6b of the chain conveyor 6. A collection case 12 for collecting is arranged.

Next, the configuration inside the microwave oven 4 of the microwave heating apparatus shown in FIG. 3 will be described with reference to FIGS. Here, FIG. 1 is a cross-sectional view showing the configuration inside the microwave oven 4 of the microwave heating apparatus shown in FIG. 3, and FIG. 2 is a diagram showing the transfer of the liquid-containing bag 5 in the microwave oven 4 shown in FIG. It is a longitudinal section showing a situation.

As shown in FIG. 1, the microwave oven 4
In the inside, the connection waveguide 2 is connected to the upper surface of the casing 4 a of the microwave oven 4, and the microwave supplied from the connection waveguide 2 is supplied near the connection portion of the connection waveguide 2. A stirrer 3 for stirring is arranged. An illumination box 13 for illuminating the inside of the oven 4 is provided on the upper surface of the casing 4a.

As shown in FIGS. 1 and 2, above the chain conveyor 6 for transporting the holders 7 provided at a predetermined pitch, the liquid-containing bag 5 is shaken by contacting the upper portion of the liquid-containing bag 5. A plurality of stoppers (swinging means) 8 for moving are provided along the conveying direction of the chain conveyor 6. The plurality of stoppers 8 are movably mounted on a bar 9 extending along the direction of transport of the chain conveyor 6, so that the mounting pitch of the stoppers 8 is variable. Therefore, by changing the mounting pitch of the stoppers 8, the contact interval of the liquid-containing bag 5 with respect to the stoppers 8 can be adjusted, and several adjacent stoppers 8 can be arranged in close contact,
Further, by withdrawing the stopper 8 from the bar 9, the number of times the liquid-containing bag 5 abuts on the stopper 8 can be adjusted.

Next, the operation of the present embodiment having such a configuration will be described with reference to FIGS.

First, the chain conveyor 6 is operated by operating the driving device 11, and the holder 7 provided on the chain conveyor 6 is conveyed from the first roller 6a side to the second roller 6b side in the microwave oven 4. I do. In this state, the microwave generator 1 is operated to generate a microwave, and the microwave is sent into the microwave oven 4 via the connection waveguide 2. The microwaves thus sent are diffused in the microwave oven 4 by the rotation of the stirrer 3.

Here, on the holder 7 provided on the chain conveyor 6, the holder 7 into the microwave oven 4 is placed.
Before the transfer, the liquid-containing bags 5 are sequentially placed. Then, the liquid-containing bag 5 thus placed moves in the microwave oven 4 and the connection waveguide 2
Is heated by receiving irradiation of microwaves supplied from the upper surface of the casing 4a through the.

In the process of moving the liquid bag 5 in the microwave oven 4, the liquid bag 5
The upper part of the abutment sequentially contacts the plurality of stoppers 8. Here, when the upper part of the liquid-containing bag 5 comes into contact with the stopper 8, the liquid-containing bag 5 supported by the holder 7 is rotated by its support shaft 14.
4 (a) from the state shown in FIG. 4 (a) to the state shown in FIG. 4 (b), when the liquid-containing bag 5 further moves and the stopper 8 comes off from the upper part of the liquid-containing bag 5. As shown in FIG. 4 (c), the left and right swing state is repeated for a predetermined time. Due to such swinging, the liquid in the liquid-containing bag 5 is stirred every time the liquid comes into contact with the stopper 8, thereby effectively suppressing the uneven heating of the liquid in the liquid-containing bag 5 and causing the liquid in the liquid-containing bag 5. The liquid can be heated almost uniformly.

Finally, the liquid-containing bag 5 heated in the microwave oven 4 separates from the holder 7 in response to the rotational movement of the holder 7 on the second roller 6b, and is disposed below the second roller 6b. Collected case 12.

As described above, according to the present embodiment, the holder 7 for swingably supporting the liquid-containing bag 5 is provided on the chain conveyor 6 at a predetermined pitch, and the holder 7 is provided above the chain conveyor 6 in the liquid-containing bag 5. Since the stopper 8 for swinging the liquid-containing bag 5 in contact therewith is provided, in the process of moving the liquid-containing bag 5 in the microwave oven 4, the liquid-containing bag 5 is moved around the support shaft of the holder 7. Can be swung. For this reason,
The liquid in the liquid-containing bag 5 is stirred every time it comes into contact with the stopper 8, thereby effectively suppressing uneven heating of the liquid in the liquid-containing bag 5 and heating the liquid in the liquid-containing bag 5 substantially uniformly. be able to.

Further, according to the present embodiment, the plurality of stoppers 8 are movably mounted on the bar 9 and the mounting pitch of the stoppers 8 is variable. The contact interval and the number of times of contact can be appropriately adjusted. For this reason, the liquid-containing bag 5 can be swung under the optimal conditions required to suppress uneven heating according to the type of liquid in the liquid-containing bag 5 and the like.

In the above-described embodiment, the stopper 8 is arranged at a position where it comes into contact with the upper part of the liquid bag 5, but the position of the stopper 8 is not limited to this. As long as the liquid-containing bag 5 can be swung, the stopper 8 can be arranged at an arbitrary position such as to come into contact with a lower portion of the liquid-containing bag 5 or the like.

In the above-described embodiment, the liquid-containing bag 5 is rocked by utilizing the contact of the liquid-containing bag 5 with the stopper 8, but the means for rocking the liquid-containing bag 5 is The liquid-containing bag 5 supported by the holder 7 is not limited to this.
A pinion may be provided in the vicinity of the support shaft 14, and racks cooperating with the pinion may be provided at predetermined intervals along the chain conveyor 6. With such a configuration, the liquid-containing bag 5 that is the object to be heated can be rotated (turned) once, so that the liquid in the liquid-containing bag 5 can be made more uniform as compared with the above-described embodiment. Can be heated. Even in such a configuration, a plurality of racks may be provided along the traveling direction of the chain conveyor 6, and the rack mounting pitch may be variable.

Further, in the above-described embodiment,
The liquid-containing bag 5 is transported by the chain conveyor 6, but the transporting device for transporting the liquid-containing bag 5 is not limited to such a device, and the liquid-containing bag 5 is continuously transferred in a predetermined direction. Alternatively, various existing conveyors can be used as long as they can be transported intermittently.

[0027]

Next, a specific embodiment of the microwave heating apparatus shown in FIGS. 1 to 3 will be described.

Here, the microwave oven 4 of the microwave heating apparatus has a length of about 5 m in the conveying direction, a length of about 0.8 m in the transverse direction, and a height of about 0.6 m. Three such microwave ovens 4 are provided in series in the transport direction of the chain conveyor 6. The microwave output of the microwave oscillator 1 connected to each microwave oven 4 was set to 1.5 kW, and the transport speed of the chain conveyor 6 was set such that the heating time of the liquid-containing bag 5 was 30 seconds. Further, 20 stoppers 8 were attached to the bar 9 extending in the three connected microwave ovens 4 at equal intervals. In addition, the liquid amount is 100
cc, a drug solution (physiological saline) having an initial temperature of 19 ° C. was added.

In such a microwave heating device,
The liquid-containing bag 5 placed on one holder 7 provided on the chain conveyor 6 moves in the microwave oven 4 and is supplied from the upper surface of the casing 4 a via the connection waveguide 2. Heated by wave irradiation. In the process of moving the liquid-containing bag 5 as described above, the upper portion of the liquid-containing bag 5 sequentially contacts the 20 stoppers 8 arranged at equal intervals, and the liquid-containing bag 5 is swung by swinging of the liquid-containing bag 5. The drug solution in 5 is stirred.

Here, as a result of measuring the temperature of the chemical solution in the liquid-containing bag 5 after the heating process, the temperature of the upper portion of the chemical solution in the liquid-containing bag 5 is 42 ° C., and the temperature of the lower portion is 41 ° C. Thus, there was almost no unevenness in the heating of the liquid medicine in the liquid bag 5. After heating, the liquid bag 5
When the temperature of the chemical solution is made uniform by shaking, the temperature of the chemical solution becomes 41 ° C., and the average temperature rise value from the initial temperature is 2 ° C.
It was 2 ° C.

(Comparative Example) Next, for comparison, the results when the same heating is performed on the liquid-containing bag 5 by the conventional microwave heating device shown in FIGS. 5 and 6 will be described. The dimensions and the number of the microwave ovens 4, the microwave output of the microwave oscillator 1, the heating time of the liquid bag 5, the liquid amount of the liquid medicine in the liquid bag 5, the initial temperature, and the like are described above. It was the same as the experimental example.

In such a conventional microwave heating apparatus, one holder 7 provided on the chain conveyor 6
The liquid-containing bag 5 placed thereon moves while standing in the microwave oven 4 while being heated, while being irradiated with the microwave supplied from the upper surface of the casing 4 a via the connection waveguide 2. Is done.

Here, as a result of measuring the temperature of the chemical solution in the liquid-containing bag 5 having undergone such a heating process, the temperature of the upper portion of the chemical solution in the liquid-containing bag 5 is 50 ° C., and the temperature of the lower portion is 38 ° C. Thus, a very large difference of 12 ° C. occurred between the upper part and the lower part of the liquid medicine in the liquid bag 5. When the temperature of the chemical is made uniform by shaking the liquid-containing bag 5 after heating, the temperature of the chemical becomes 42
° C, and the average temperature rise from the initial temperature was 23 ° C.

[0034]

As described above, according to the present invention, the object to be heated can be rocked in the process of moving the object to be heated in the microwave oven. The object to be heated can be heated substantially uniformly by effectively suppressing uneven heating of the object.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a microwave oven of a microwave heating device according to the present invention.

FIG. 2 is a longitudinal sectional view showing a configuration inside the microwave oven shown in FIG.

FIG. 3 is an overall schematic diagram showing a microwave heating device according to the present invention.

FIG. 4 is a diagram for explaining a swinging state of a liquid-containing bag that is an object to be heated.

FIG. 5 is a cross-sectional view showing a microwave oven of a conventional microwave heating device.

FIG. 6 is a longitudinal sectional view showing a configuration inside the microwave oven shown in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Microwave oscillator 2 Connecting waveguide 4 Microwave oven 5 Bag with liquid (object to be heated) 6 Chain conveyor (transport device) 7 Holder 8 Stopper 9 Bar

Continuation of the front page (72) Inventor Yoichi Goto 7-1, Nisshincho, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Toshiba Electronic Engineering Co., Ltd.

Claims (3)

[Claims] 1. A microwave generator for generating microwaves, a microwave oven connected to the microwave oscillator via a waveguide, and a transfer for transferring an object to be heated in the microwave oven. A holder for swingably supporting the object to be heated is provided in the transfer device, and a swing unit for swinging the object to be heated supported by the holder is provided in the microwave oven. A microwave heating device, comprising: 2. The microwave heating apparatus according to claim 1, wherein said swinging means is a stopper provided above said transfer device and abutting against the object to be heated to swing the object to be heated. 3. The microwave heating apparatus according to claim 2, wherein a plurality of the stoppers are provided along a traveling direction of the transfer device, and a mounting pitch of the plurality of stoppers is variable.