CN202361428U

CN202361428U - Microwave oven

Info

Publication number: CN202361428U
Application number: CN 201120233472
Authority: CN
Inventors: 李昌林
Original assignee: Guangdong Midea Microwave Oven Manufacturing Co Ltd
Current assignee: Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2011-07-05
Filing date: 2011-07-05
Publication date: 2012-08-01
Anticipated expiration: 2021-07-05

Abstract

The utility model relates to a microwave oven comprising a cavity, a microwave generator and a waveguide tube for guiding microwaves into the cavity. The waveguide tube with a rectangular groove structure is very close to the side and the lower side of the cavity and is claddingly mounted to the cavity; a convex rectangular holding cavity is disposed on the top of the waveguide tube, and a through-hole is arranged at the back of the holding cavity at a certain distance from both the top wall and the side wall of the holding cavity; the microwave generator is mounted on the outer side of the back of the holding cavity, whose energy outputter passes through the through-hole and is located in the holding cavity, which is characterized in that the middle position of the top wall of the holding cavity is arched outwards in a circular arc form, and that the vertical distance H2 between the energy outputter and the top wall of the holding cavity is smaller than the vertical distance H1 between the energy outputter and the side wall of the holding cavity. The microwave oven adopts the structure that the top wall of the holding cavity is designed to be arched in a circular arc form, and the vertical distance H2 between the energy outputter and the top wall of the holding cavity is smaller than the vertical distance H1 between the energy outputter and the side wall of the holding cavity; therefore, not only the space between the energy outputter and the top wall of the holding cavity is enlarged and electric arc is avoided, but microwave energy efficiency is also improved, and in addition, the microwave oven not only has a simple structure and reasonable design, but the quality and performance of the product is also improved and guaranteed.

Description

A kind of micro-wave oven

Technical field

The utility model relates to a kind of micro-wave oven, the improved micro-wave oven of particularly a kind of waveguide structure.

Background technology

The micro-wave oven of prior art such as Fig. 1 are to shown in Figure 3; Comprise cavity 1, microwave generating apparatus 2 and be used for microwave is imported the waveguide 3 in the cavity; Waveguide 3 rectangular groove shapes wherein; Be close to cavity 1 coating and be installed in its side and downside, microwave generating apparatus 2 is positioned at the outside of cavity 1 and is installed in the outside, upper end of waveguide 3; The top of waveguide 3 is provided with the host cavity 31 of rectangular structure, and the host cavity back is provided with through hole 32, and the energy follower 21 of microwave generating apparatus 2 passes through hole 32 and is positioned at host cavity 31; In the above-mentioned design; Energy follower 21 has strict restriction apart from the roof 33 of host cavity 31 and the spacing of sidewall 34, can not be excessive or too small, should satisfy the requirement of microwave energy efficient; Guarantee again to produce electric arc, avoid burning out energy follower or waveguide; In the design process, generally need the preferential distance H 2 (left and right sides sidewall generally is symmetrical set) that guarantees energy follower 21 to host cavity sidewall 33, and then consider the distance H 1 of roof 34; If H1 is greater than critical value D0 (generally the diameter according to microwave wavelength and energy follower determines); Then can not produce electric arc and harm, if but H1 is excessive, and microwave energy efficient then can be lower; Therefore; The shaped design of host cavity is a more complicated in the prior art, gently then causes problems such as electric arc generation easily, and is heavy then damage micro-wave oven.

Summary of the invention

The purpose of the utility model be to consider the problems referred to above and provide a kind of reasonable in design, simple in structure, can avoid producing between the microwave generating apparatus and waveguide in the course of work micro-wave oven that electric arc improves microwave energy efficient.

The technical scheme of the utility model is: a kind of micro-wave oven; Comprise cavity, microwave generating apparatus and be used for microwave is imported the waveguide in the cavity; The rectangular groove shape of waveguide structure wherein, side and the downside of being close to cavity coats mounted thereto, and the top of waveguide is provided with the host cavity of the cuboid of evagination; The back of host cavity is provided with through hole; Through hole all has certain distance apart from the roof and the sidewall of host cavity, and microwave generating apparatus is installed in the outside, back of host cavity, and its energy follower passes through hole and is positioned at host cavity; The outside circular arc in centre position that it is characterized in that the roof of said host cavity arches upward, the energy follower to the vertical range H2 of the roof of host cavity less than vertical range H1 to sidewall.

The circular arc degree of position is arched upward greater than the radian of energy follower in the centre of the roof of said host cavity.

The utility model adopts the roof with host cavity to be designed to the structure that circular arc arches upward; And the energy follower less than the vertical range H1 to sidewall, therefore, has not only enlarged the gap between energy follower and the host cavity roof to the vertical range H2 of host cavity roof; Avoided the generation of electric arc; And improve microwave energy efficient, and not only simple in structure, reasonable in design, and the quality of product and performance are improved and guarantee.

Description of drawings

Fig. 1 is the prior art constructions sketch map.

Fig. 2 is waveguide and the microwave generation device mounting structure sketch map among Fig. 1.

Fig. 3 is waveguide and the topology layout floor map of energy follower among Fig. 1.

Fig. 4 is the structural representation of the utility model.

Fig. 5 is waveguide and the topology layout floor map of energy follower among Fig. 4.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is done and to be further described.

With reference to shown in Figure 4; The utility model micro-wave oven comprises cavity 1, microwave generating apparatus 2 and is used for microwave is imported the waveguide 3 in the cavity, wherein waveguide 3 rectangular groove shape structures; Right side and the downside of being close to cavity 1 coat mounted thereto; The top of waveguide 3 is provided with the host cavity 31 of the cuboid of evagination a little, and the back of host cavity 31 is provided with through hole 32, and through hole 32 all has certain distance apart from the roof 33 of host cavity 31 with sidewall 34; Microwave generating apparatus 2 is installed in the outside, back of host cavity 31; Its energy follower 21 passes through hole 32 and is positioned at host cavity 31, and the outside circular arc in centre position of the roof 33 of host cavity 31 arches upward, energy follower 21 to the vertical range H2 of the roof 33 of host cavity 31 less than vertical range H1 to sidewall 34.

In the present embodiment, the circular arc degree of position is arched upward greater than the radian of energy follower 21 in the centre of the roof 33 of said host cavity 31.

The utility model adopts the roof with host cavity to be designed to the structure that circular arc arches upward; And the energy follower to the vertical range H2 of host cavity roof less than vertical range H1 to sidewall; Therefore; Not only enlarge the gap between energy follower and the host cavity roof, avoided the generation of electric arc, and improved microwave energy efficient greatly.

Claims

1. micro-wave oven; Comprise cavity (1), microwave generating apparatus (2) and be used for microwave is imported the waveguide (3) in the cavity; The rectangular groove shape structure of waveguide (3) wherein; Side and the downside of being close to cavity (1) coat mounted thereto; The top of waveguide (3) is provided with the host cavity (31) of the cuboid of evagination, and the back of host cavity (31) is provided with through hole (32), and through hole (32) all has certain distance apart from the roof (33) and the sidewall (34) of host cavity (31); Microwave generating apparatus (2) is installed in the outside, back of host cavity (31); Its energy follower (21) passes through hole (32) and is positioned at host cavity (31), it is characterized in that the outside circular arc in centre position of the roof (33) of said host cavity (31) arches upward, energy follower (21) to the vertical range H2 of the roof (33) of host cavity (31) less than vertical range (H1) to sidewall (34).

2. micro-wave oven according to claim 1, the centre that it is characterized in that the roof (33) of said host cavity (31) arch upward the circular arc degree of position greater than the radian of energy follower (21).