KR100212673B1 - Isolating structure for leakage of microwave in microwave type washing machine - Google Patents

Abstract

The present invention relates to an electromagnetic leakage blocking structure of the microwave laundry dryer, the present invention is rotatably inserted into the interior of the outer tub (5) laundry washing (1) to wash, dehydration, drying of the laundry and the washing tank (1) Hollow shaft (7) connected to the side of the), driving means (8) for rotating the washing tank (1) by rotating the hollow shaft (7) connected to the hollow shaft (7), and the hollow shaft (7) Is installed perpendicular to the end of the magnetron bracket (9), the magnetron (10) is coupled to the magnetron bracket (9) to oscillate the microwave, and is fixed to the hollow shaft (7) is inserted into the magnetron (10) In the microwave laundry dryer provided with an antenna 12 for inducing and feeding the oscillated microwaves into the washing tank 1, between the end of the hollow shaft 7 and the magnetron bracket 9 to which the magnetron 10 is coupled. Magnetron By allowing the choke chamber member 11 to block leakage of the microwaves oscillated at 10, the microwaves oscillated at the magnetron 10 can be effectively fed into the washing tank without leaking to the outside.

Description

Electromagnetic Leakage Blocking Structure of Microwave Laundry Dryer

The present invention relates to an electromagnetic leakage blocking structure of a microwave laundry dryer, and in particular, to prevent the microwaves oscillated from the magnetron from leaking to the outside, so that microwaves can be effectively fed into the washing tank. It's about structure.

In general, a washing machine can be divided into washing and dehydrating laundry, and washing and dehydrating and drying in terms of function, and washing and drying are performed after washing and rinsing. The process finishes the laundry.

As an example of a washing machine that combines the drying function, as shown in FIG. 1, a heater 3 installed in the condensation duct 2 communicating upper and lower portions of the washing tank 1 after the washing process is finished. The generated heat is circulated in the washing tank 1 to dry the laundry.

However, the structure as described above is drying the moisture by the air heated by the indirect heating method in which the air heated by the heater 3 is introduced into the washing tank 1 to evaporate and dry the moisture of the clothing by the introduced heating air. Since the efficiency is very low, the drying time is long, and there is a concern that the temperature of the clothing must be increased in order to dry the moisture deep in the clothing, thereby damaging the clothing.

Reference numeral 4 denotes a main body, 5 denotes an outer tub, and 6 denotes a blower fan.

On the other hand, by complementing the problems described above by installing a magnetron (MAGNETRON) inside the microwave (MICROWAVE; electromagnetic wave) generated by the magnetron by feeding the inside of the washing tank (1) by the dielectric heating principle of the microwave By drying the laundry by heating and evaporating the moisture in the textile tissue of the garment, not only can the clothes be prevented from being damaged by high temperatures, but also the drying time can be shortened by efficiently drying the moisture contained in the garment. To make it work.

The microwave laundry dryer equipped with the microwaveron as a heat source for feeding microwaves efficiently feeds the laundry into the washing tank 1 in which the microwaves generated from the magnetron do not leak to the outside in order to dry the laundry quickly and efficiently. Being an important task.

Accordingly, an object of the present invention is to provide an electromagnetic leakage blocking structure of a microwave laundry dryer which prevents microwaves oscillated from the magnetron from leaking to the outside to effectively feed the microwaves into the washing tank.

1 is a cross-sectional view schematically showing an example of a conventional drum washing machine.

Figure 2 (a) is a cross-sectional view showing a part of a microwave laundry dryer equipped with an electromagnetic wave blocking structure of the present invention.

Figure 2 (b) is a cross-sectional view showing a microwave laundry dryer electromagnetic wave blocking structure of the present invention.

Figure 3 is a cross-sectional view showing a microwave laundry dryer electromagnetic wave blocking structure of the present invention.

* Explanation of symbols for main parts of the drawings

1: washing tank 5: outer tank

7: hollow shaft 8: driving means

9: magnetron bracket 10: magnetron

11: choke chamber member 11a: engaging surface part

11b: hole 11c: choke thread

12: antenna

In order to achieve the object of the present invention as described above, a washing tank rotatably inserted into the outer tub to wash, dehydrate, and dry the laundry, and a hollow shaft connected to the side of the washing tub, and connected to the hollow shaft, A driving means for rotating the washing tank by rotating the shaft, a magnetron bracket installed perpendicular to the end of the hollow shaft, a magnetron coupled to the magnetron bracket to oscillate the microwave, and inserted into the hollow shaft and oscillated at the magnetron. A microwave laundry dryer comprising an antenna for inducing and feeding microwaves into a washing tank; The microwave leakage blocking structure of the microwave laundry dryer is provided between the end of the hollow shaft and the magnetron bracket to which the magnetron is coupled.

The choke chamber member has a coupling surface portion coupled to the magnetron bracket on one side, the insertion hole is formed is inserted into the hollow shaft in the center and the choke seal having a predetermined width and depth is formed on the inner peripheral surface of the insertion hole A microwave leakage blocking structure of a microwave laundry dryer is provided.

The seal is provided with an electromagnetic leakage blocking structure of the microwave laundry dryer, characterized in that the number is formed on the inner surface of the insertion hole.

Hereinafter, the electromagnetic leakage blocking structure of the microwave laundry dryer of the present invention will be described according to the embodiment shown in the accompanying drawings.

Electromagnetic leakage blocking structure of the microwave laundry dryer of the present invention, as shown in 2 (a), 2 (b), 3 degrees, is rotatably inserted into the outer tub (5) to wash and dehydrate laundry The washing tank 1 is dried, the hollow shaft 7 connected to the side of the washing tank 1 and the hollow shaft 7 are connected to the washing shaft 1 by rotating the hollow shaft 7. A driving means 8 for rotating, a magnetron bracket 9 installed perpendicular to an end of the hollow shaft 7, a magnetron 10 coupled to the magnetron bracket 9 to oscillate a microwave, and the In the microwave washing dryer, which is inserted into the hollow shaft (7) and provided with an antenna (12) for feeding the microwaves oscillated from the magnetron (10) into the washing tank (1), the end of the hollow shaft (7) Between the magnetron bracket (9) and the magnetron (10) The choke chamber member 11 which blocks the microwaves oscillated from the magnetron 10 is coupled to each other.

As shown in FIG. 2 (b), the choke chamber member 11 has a coupling surface portion 11a coupled to the magnetron bracket 9 at one side thereof, and the hollow shaft 7 is inserted at the center thereof. The penetrating insertion hole 11b is formed, and several choke seals 11c having a predetermined width and depth are formed on the inner circumferential surface of the insertion hole 11b. At least two seals 11c are formed on the inner surface of the insertion hole in order to reliably block the microwave.

The choke chamber member 11 is coupled to the magnetron bracket 9, the coupling surface portion 11a is coupled to the means is preferably coupled by fastening a general screw.

On the other hand, a through hole (9a) is formed in the magnetron bracket (9) located on the center line of the hollow shaft (7) and the oscillating portion (10a) of the magnetron 10 is inserted into the through hole (9a). In addition, the antenna 12 may be spaced apart from the oscillation unit 10a or a power source, or may be located in combination with the oscillation unit 10a.

Hereinafter, the effects of the microwave laundry dryer electromagnetic leakage blocking structure of the present invention will be described.

In general, the microwave laundry dryer is a key-in so that the drying process is completed after the washing and dehydration process is completed, the drying process is performed by the control unit of the washing machine, the drying process is a hollow shaft ( 7) rotates the washing tank (1) while rotating to rotate the laundry inside the washing tank (1) and when the current is applied to the magnetron (10) to oscillate the microwave oscillated microwave to the antenna 12 It is guided and fed into the washing tub 1 while passing through the hollow shaft 7 through the antenna 12. The microwave fed to the washing tank 1 heats and evaporates moisture in the fiber tissue of the garment by the principle of dielectric heating to dry the laundry.

The hollow shaft in which the antenna 12, which guides the microwaves oscillated from the magnetron 10, rotates at a predetermined interval from the magnetron 10 while the magnetron 10 is fixed to the magnetron bracket 9 in the above process. (7) Inserted and fixed inside to induce microwave, part of the microwave generated from the magnetron 10 leaks into the gap between the magnetron 10 and the hollow shaft (7), which is the antenna 12 is fixed insertion The microwave leaked by the choke chamber member 11 surrounding one end of the hollow shaft 7 is blocked.

The frequency of the microwave leaked by the choke chamber 11c formed to have a predetermined space inside the choke chamber member 11 is attenuated and the leakage of the microwave is blocked.

On the other hand, in order to maximize the effect of blocking the leakage of the microwave to increase the impedance (IMPEDANCE) at the inlet of the seal (11c), the impedance relationship for this, with reference to Figure 2 (b), Same as the equation.

는 파의 이동경로 구조 및 유전율에 의해 정해지는 값이다.Where Z _inpul ; Input impedance with distance from load, Z _o ; Characteristic impedance, Z _o ,

Is a value determined by the wave path structure and permittivity.

0인 면이 된다. 따라서 막힌 면으로 부터

(

g ; 마이크로웨이브의 관내파장)만큼 떨어진 점인 D점에서 임피던스는 무한대가 되어 마이크로웨이브의 누설이 차단된다. 즉 쵸크실부재(11)의 삽입공 내주면에 형성되는 실의 깊이

이 된다. 이는 사용주파수에 따라 실의 깊이를 조정함에 의해 마이크로웨이브의 누설을 차단할 수 있게 된다.However, since one side of the thread is blocked, Z _l

It's going to be zero. So from the blocked side

(

g; At point D, which is a distance away from the microwave wavelength of the microwave, the impedance becomes infinite and the leakage of the microwave is blocked. In other words, the depth of the yarn formed on the inner peripheral surface of the insertion hole of the choke seal member 11

Becomes This makes it possible to block the microwave leakage by adjusting the depth of the seal according to the frequency of use.

As described above, the microwave leakage blocking structure of the microwave laundry dryer according to the present invention includes a washing tank rotatably inserted into an outer tank to wash, dehydrate, and dry laundry, and a hollow shaft connected to the side of the washing tank. Drive means for rotating the washing tub by rotating the hollow shaft connected to the hollow shaft, a magnetron bracket installed perpendicular to the end of the hollow shaft, a magnetron coupled to the magnetron bracket to oscillate the microwave, and the hollow shaft portion In the microwave laundry dryer provided with an antenna inserted in the microwave to guide the microwaves oscillated from the magnetron into the washing tank, the microwaves oscillated from the magnetron are leaked between the end of the hollow shaft and the magnetron bracket to which the magnetron is coupled. There is an effect that a microwave from the magnetron to be oscillated by the seal member such that the choke is coupled can be effectively fed into the washing tub without being leaked to the outside to block.

Claims (3)

A washing tank rotatably inserted into the outer tub to wash, dehydrate, and dry the laundry; a hollow shaft connected to the side of the washing tub; and driving means for rotating the tub by rotating the hollow shaft connected to the hollow shaft; And a magnetron bracket vertically installed at an end of the hollow shaft, a magnetron coupled to the magnetron bracket to oscillate the microwave, and an antenna inserted into the hollow shaft to guide and feed the microwaves oscillated from the magnetron into the washing tank. Microwave made in the laundry dryer; Electromagnetic leakage blocking structure of the microwave laundry dryer, characterized in that between the end of the hollow shaft and the magnetron bracket to which the magnetron is coupled, a choke chamber member for blocking leakage of the microwave generated from the magnetron. The choke chamber member of claim 1, wherein the choke chamber member has a coupling surface portion coupled to the magnetron bracket at one side thereof, and an insertion hole into which the hollow shaft is inserted at the center thereof, and a choke having a predetermined width and depth at an inner circumferential surface of the insertion hole. Electromagnetic leakage blocking structure of the microwave laundry dryer, characterized in that the thread is formed. The electromagnetic leakage blocking structure of the microwave laundry dryer according to claim 2, wherein the seal is formed on the inner surface of the insertion hole.

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