JPH07153568A - Microwave heating device - Google Patents

Abstract

PURPOSE:To heat one or two or more materials to be heated uniformly by meshing an internal teeth gear in common with planetary gears arranged around a sun gear, and fixing/providing the internal teeth gear to/ in an opening part of a support frame body. CONSTITUTION:When a driving motor 21 and a microwave output means 2 are set in an operating condition, a rotary main shaft part 5 and a sun gear 6 rotate simultaneously, and a microwave is radiated to a part to be heated in a chamber 1 from a microwave emitting part 2C. When the gear 6 rotates, planetary gears 7 and 8 start rotation and revolution simultaneously, and revolve around the gear 6 so as to run along an inner peripheral surface of an internal teeth gear 9. Since heating material placing parts 11 and 12 on the gears 7 and 8 revolve around the gear 6 while rotating respectively, plural test tubes also revolve around the gear 9 while rotating together with the placing parts 11 and 12. The gear 9 is fixed to an opening part 4A of a support frame body 4, and the test tubes turn toward various directions in the chamber 1, and the positions change continuously, so that the microwave is uniformly radiated without cusing nonuniformity.

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, in which a turntable is provided in a semi-sealed container, and an object to be heated on the turntable is irradiated with microwaves for heating. Regarding the device.

[0002]

2. Description of the Related Art As a microwave heating device of this type,
Microwave ovens are well known in the past. In this case, the turntable in the sealed container is generally used in a circular orbit because of its durability and cost reduction.

[0003]

However, in the above-mentioned conventional example, the object to be heated in the hermetically sealed container is simply kept to move in a circular orbit, which causes uneven irradiation and uniform heating. There was an inconvenience that it could not be done. Further, when the above-mentioned conventional example is used for a plurality of test tubes in order to shorten the reaction time of the oxygen immune reaction, it is said that each test tube (actually the internal liquid sample) cannot be heated uniformly. There was an inconvenience.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a microwave heating apparatus capable of improving the disadvantages of the conventional example, and in particular, capable of uniformly heating one or more objects to be heated. To do.

[0005]

According to the present invention, a box-shaped chamber formed so as to be hermetically sealed, a microwave output means for radiating a microwave to a space inside the chamber, which is provided adjacent to the chamber, and the chamber. The turntable mechanism provided in the turntable mechanism, and the object-to-be-heated mounting portion provided in a part of the turntable mechanism.

The turntable mechanism includes a support frame body having a U-shaped cross section, which is fixed to a bottom portion in the chamber and has an upper opening, and a rotary main shaft portion rotatably mounted on the center line of the support frame body. A sun gear mounted on the tip of the rotating main shaft, a plurality of planet gears arranged around the sun gear, and a common mesh with the plurality of planet gears and at the opening of the support frame. It has a fixedly mounted internal gear. Then, a configuration is adopted in which each of the above-mentioned planetary gears is individually equipped with the object mounting portion to be heated. This aims to achieve the above-mentioned object.

[0007]

[Operation] First, when the drive motor and the microwave output means are set to the operating state, the rotary main shaft portion and the sun gear rotate at the same time, and microwaves are radiated from the microwave radiation portion toward the object to be heated in the chamber. It In this case, the planetary gear starts to rotate and revolve at the same time by being biased by the sun gear. Therefore, the object to be heated on the object-to-be-heated placing portion faces various positions in the chamber. Therefore, the position of the object to be heated continuously changes in the chamber, and as a result, the unevenness of the microwave irradiation to the object to be heated is reduced, and the object to be heated is substantially uniformly irradiated.

The rotation of the sun gear 6 depends on the planetary gears 7,
8 and the planetary gears 7, 8 start rotating and revolving at the same time.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

First, in FIG. 1, reference numeral 1 indicates a box-shaped chamber formed so as to be hermetically sealed. The chamber 1 is provided with a microwave output means 2 for emitting a microwave to the space inside the chamber 1. The microwave output means 2 includes a microwave generation member 2A and a microwave amplification section 2B that amplifies the microwave output from the microwave generation member 2A. The microwave amplified by the microwave amplification section 2B is radiated from the microwave radiation section 2C toward the object to be heated in the chamber 1.

A turntable mechanism 3 is installed in the chamber 1.

The turntable mechanism 3 includes a chamber 1
A support frame body 4 having a U-shaped cross-section, which is fixed to a bottom portion inside and has an upper opening, a rotary main shaft portion 5 rotatably mounted on the center line of the support frame body 4, and a rotary main shaft portion 5 of the rotary main shaft portion 5. A sun gear 6 mounted on the tip portion, and a plurality of (two in this embodiment) planetary gears 7, 8 arranged around the sun gear 6,
The planetary gears 7 and 8 are in common mesh with the support frame 4
And an internal gear 9 fixedly mounted in the opening 4A.

On the upper surface portions of the planetary gears 7 and 8, the object-to-be-heated placing portions 11 and 12 are mounted. The heated object placement parts 11 and 12 are for holding a plurality of test tubes T placed to obtain an oxygen immune reaction. Code 11
Reference numerals a and 12a respectively denote mounting frames.

The planetary gears 7, 8 are rotatably mounted on the arm member 20 via fixed support shafts 7A, 8A. Further, the arm member 20 is rotatably mounted on the rotating main shaft portion 5 described above at the center thereof. Reference numeral 5A indicates a bearing. The drive motor 2 is attached to the rotary main shaft portion 5.
1 is directly connected. The rotation speed of the drive motor 21 can be freely variably set by an external operation. Reference numeral 22 indicates a support plate for the motor. Further, reference numerals 1A and 1B indicate columns for the chamber 1.

Next, the operation of the first embodiment will be described with reference to FIG.

First, when the drive motor 21 and the microwave output means 2 are set to the operating state, the rotating main shaft portion 5 and the sun gear 6 rotate at the same time, and the microwave radiating portion 2C directs the object to be heated in the chamber 1. Microwaves are emitted.

Further, the rotation of the sun gear 6 depends on the planetary gears 7,
8 and the planetary gears 7, 8 start rotating and revolving at the same time. That is, in FIG. 2A, when the sun gear 6 rotates in the direction of arrow A (counterclockwise), the planetary gears 7 and 8 are biased by this and rotate in the directions of arrow B (clockwise). On the other hand, since the planetary gears 7 and 8 mesh with the internal gear 9 as described above, the sun gear 6 is rotated around the sun gear 6 in the direction of arrow C (that is, in the counterclockwise direction) along the inner peripheral surface of the internal gear 9. Revolve around.

Therefore, the object mounting portions 11, 12 on the planetary gears 7, 8 revolve around the sun gear 6 while rotating on their own axis, so that the plurality of test tubes T are also heated. It revolves around the sun gear 6 while rotating integrally with the object rests 11 and 12 respectively. Figure 2
FIG. 2B exemplifies the state immediately after the rotation and revolution of the planetary gears 7 and 8 are started, and FIG.
This is an example of a state in which the rotation advances by / 4 rotation. In this case, the rotational speeds and rotational speeds of the object-to-be-heated mounting portions 11, 12 for rotation and revolution are determined by the numbers of teeth of the sun gear 6, the planetary gears 7, 8 and the internal gear 9.

Therefore, the plurality of test tubes T on the object-to-be-heated mounting portions 11 and 12 face various positions in the chamber 1. Therefore, the position of the test tube T in the chamber 1 continuously changes, and as a result, the unevenness of the microwave irradiation is reduced, and the test tube T is generally uniformly irradiated.

The movement of the liquid sample in the test tube T is shown in FIGS. In the figure, in comparison between the points a and b, the test tube T _{2 at the} point b has a larger radius of gyration than the test tube T _{1 at the} point a. In this case, since the liquid sample inside also moves largely, it is effectively stirred. FIG. 4 shows a situation in which the movement of the liquid sample differs depending on the magnitude of the centrifugal force. For this reason, the test tubes T ₁ and T ₂ are not
In addition to being effectively heated along with the rotation and the revolution of No. 2, the liquid sample inside is also heated while being stirred, and the advantage that the reaction time of the oxygen immune reaction can be surely shortened can be obtained.

Next, a second embodiment will be described with reference to FIGS.

The second embodiment shown in FIGS. 5 to 7 shows another example of the turntable mechanism portion disclosed in the embodiment of FIG. 1 described above, and FIG. 5 shows a schematic configuration diagram. 6 shows the relationship between the sun gear, the planetary gears, and the turntable, and FIG. 7 is a diagram showing the rotating surface of the turntable of FIG.

5 to 7, the turntable mechanism 33 includes a cylindrical support frame 34 fixed to the center of the bottom of the chamber 1 and having an opening at the top, and an opening 34A portion of the cylindrical support frame 33. The sun gear 35 installed on the
Four planet gears 3 arranged around the sun gear 35
6, 37, 38, 39.

The four planetary gears 36 to 37 are rotatably supported by an arm member 40A. The arm member 40 is connected to and supported by a rotating main shaft portion 40 rotatably mounted on the center line of the cylindrical support frame 33. Also, the planetary gears 36 to 39 are individually equipped with turntables 41 to 44. Furthermore, planetary gear 3
As shown in FIG. 7, each of 6 to 39 is provided with a heating target mounting portion 50 individually.

Reference numeral 45 represents a drive motor. The rotational force of the drive motor 45 is transmitted to the rotary main shaft portion 40 described above via the worm 45A and the worm gear 45B. Reference numeral 46 indicates a bearing.

Further, the above-mentioned arm member 40A is equipped with a cover plate 47 which rotates integrally with the revolution of each of the turntables 41 to 44. The cover plate 47 has through-holes 47A to 47 for accommodating and arranging the turntables 41 to 44 in the disposition portion of the turntables 41 to 44 described above using a disc-shaped member as a material.
Equipped with D.

Therefore, as shown in FIGS. 5 and 7, the turntables 41 to 44 and the cover plate 47 are set so that their upper surfaces are located on the same plane.
Reference numeral 48 indicates a fixing jig for fixing the object-to-be-heated mounting portion. Reference numeral 1H indicates a through hole that allows the cover plate 47 to rotate. The other structure is the same as that of the first embodiment described above.

In this way as well, in addition to having the same effects as the first embodiment described above, it is possible to make the overall size smaller because the gears on the outside are not necessary, and other than the turntables 41-44. It is easy to cover the place with a microwave reflection sheet or the like, and in this respect, there is an advantage that complicated equipment therefor is unnecessary and cost can be reduced.

[0029]

Since the present invention is constructed and functions as described above, according to this, the position and orientation of one or more objects to be heated on the object mounting portion are continuous in the chamber. It is possible to significantly reduce irradiation unevenness of microwaves to each heated object and to irradiate each heated object with the microwaves substantially uniformly. When used for acceleration, it is possible to simultaneously heat the liquid sample inside a plurality of test tubes while agitating it, and thus it is possible to reliably reduce the reaction time of the oxygen immune reaction. It is possible to provide an excellent microwave heating device.

[Brief description of drawings]

FIG. 1 is a longitudinal section showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing the operation of the embodiment shown in FIG.

FIG. 3 is an explanatory diagram showing a stirring state of the liquid sample when the object to be heated is the liquid sample in the example in FIG.

FIG. 4 is an explanatory diagram showing a state in which the liquid sample in the test tube is viewed from the side in the state of FIG.

FIG. 5 is a schematic configuration diagram showing a second embodiment.

6 is an explanatory diagram showing a positional relationship of gears in FIG. 5. FIG.

FIG. 7 is a plan view with a part of FIG. 5 omitted.

[Explanation of symbols]

 1 Chamber 2 Microwave Output Means 3,33 Turntable Mechanism 4 Support Frame 4A Opening of Support Frame 5,40 Rotating Spindle 6 Sun Gear 7,8,36,37,38,39 Planetary Gear 9 Internal Gear 11, 12, 50 Heated object mounting portion 34 Cylindrical support frame 40A Arm member T Test tube

Claims (2)

[Claims] 1. A box-shaped chamber which is formed so as to be capable of being sealed, a microwave output means which is provided in the chamber and radiates a microwave into a space in the chamber, and a turntable mechanism which is provided in the chamber. In the microwave heating device provided with a heated object mounting portion provided in a part of the turntable mechanism, the turntable mechanism is fixed to a bottom portion in the chamber and has a cross-section A support frame in the shape of a letter, a rotary main shaft part rotatably mounted on the center line of the support frame, a sun gear mounted on the tip of the rotary main shaft part, and a sun gear mounted around the sun gear. A plurality of planetary gears, and an internal gear that meshes with the plurality of planetary gears in common and is fixedly installed in the opening of the support frame, and the heated object mounting portion is the planetary gear. Each of the gear Microwave heating apparatus characterized by equipped individually. 2. A box-shaped chamber which is formed so as to be hermetically sealed, a microwave output unit which is provided adjacent to the chamber and radiates microwaves to a space in the chamber, and a turntable mechanism which is provided in the chamber. A microwave heating device provided with a heated object mounting portion provided in a part of the turntable mechanism, wherein the turntable mechanism is a cylindrical shape fixed to a center of a bottom portion of the chamber and having an upper opening. A support frame, and a sun gear mounted in the opening of the cylindrical support frame,
A plurality of planet gears arranged around the sun gear, and a rotary main shaft portion rotatably mounted on the center line of the cylindrical support frame and rotatably supporting the plurality of planet gears via an arm member. And a turntable individually mounted on each of the planetary gears, wherein the object mounting portion is individually mounted on each of the planetary gears.