Microwave oven

Abstract

A microwave oven relates to the technical field of household appliances and comprises an oven body with a cavity, a magnetron arranged on one side of the cavity, a first steam exhaust structure arranged on the cavity and a fan assembly arranged at the magnetron, an air inlet of the fan assembly is communicated with the first steam exhaust structure, and an air outlet of the fan assembly is communicated with the first steam exhaust structure. And part of steam in the cavity is sucked out by the fan assembly and is blown into the magnetron. By the adoption of the technical scheme, part of steam in the cavity is sucked out through the fan assembly and blown to the magnetron, water vapor in the steam is evaporated through the magnetron, then the heated steam is blown back into the cavity, the interior of the cavity is dried and dehumidified, and finally the heated steam and residual steam in the cavity are discharged together. According to the microwave oven, steam in the cavity is optimized to be condensed into water, the exhausting and drying effects of the cavity are improved, the sufficient drying and dehumidification effects are achieved, the steam discharge amount is reduced, the working environment of the microwave oven is improved, the service life of the microwave oven is prolonged, the structure is simple, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, specifically relates to a microwave oven. BACKGROUND

[0002] The magnetron in the microwave oven is the most core component of the microwave oven, is a vacuum device, and is used for generating continuous microwaves for heating food. The continuous microwaves generated by the magnetron make molecules vibrate, and food is cooked by using the friction heat between food molecules. During the cooking process, a large amount of steam is generated in the food in the cavity, which causes excessive condensation of water in the cavity, affects the taste of food and cleaning difficulty, and a large amount of steam is discharged to the outside of the machine, which easily causes the environment around the machine to be humid and even damages the user's household items.

[0003] Therefore, a microwave oven with a cavity drying and dehumidifying function appears on the market, which includes a furnace body, a magnetron and an air guide mechanism. The air guide mechanism can form hot air by using the heat generated when the magnetron is cooled, finally deliver the hot air to the cavity, prevent water vapor from condensing in the cavity by using the hot air, form air pressure in the cavity, and finally discharge the steam mixed with water vapor and oil stains out of the cavity to realize the drying and exhaust functions of the cavity. In addition, the air guide mechanism can also recycle and utilize the heat generated when the magnetron is cooled.

[0004] However, during the use of the microwave oven, although the formation of condensed water in the cavity is reduced to a certain extent, the discharge of water vapor is not reduced, so that a large amount of water vapor is discharged out of the cavity, resulting in the humid environment around the microwave oven. INVENTION CONTENTS

[0005] The utility model discloses a microwave oven which solves the problem that a large amount of water vapor is discharged during the use of the microwave oven in the prior art, resulting in the humid environment around the microwave oven.

[0006] The utility model discloses the technical scheme is: a microwave oven, its characterized in that, including the furnace body with cavity, the magnetron of being located at one side of cavity, the first exhaust structure of being set up on the cavity and the fan module of being located at the magnetron, the air inlet of fan module with the first exhaust structure intercommunication, make part of steam in the inner cavity be sucked out and blow into the magnetron by fan module.

[0007] Optionally, one side of the cavity is formed with an air duct, and the fan module and the magnetron are located in the air duct, and the first exhaust structure is communicated with the air duct.

[0008] Optionally, the fan module comprises a wind guide cover fixedly arranged in the air duct, a fan blade rotatably arranged at an air outlet of the wind guide cover, and a shield motor for driving the fan blade to rotate, and the air outlet of the wind guide cover faces the magnetron.

[0009] Optionally, the air inlet of the fan assembly is an open area formed on the side wall of the air deflector, and the open area is in communication with the first steam exhaust hole.

[0010] Optionally, a second steam exhaust structure is formed on the cavity and in communication with the outside.

[0011] Optionally, a first air inlet hole is formed on the cavity and in communication with the air deflector, and a second air inlet hole is formed on the cavity and in communication with the magnetron, and the second air inlet hole is in the same plane as the first steam exhaust structure.

[0012] Optionally, the cavity comprises a cavity U plate, a cavity front plate, a cavity rear plate and a cavity top plate, the first steam exhaust hole and the second steam exhaust hole are respectively located on two sides of the cavity U plate, and the first air inlet hole is located on the cavity rear plate.

[0013] Optionally, the first steam exhaust structure comprises a plurality of first air exhaust holes arranged in an array, the first air exhaust hole and the second air inlet hole are uniformly distributed between the middle and the upper part of one side of the cavity U plate, and the second steam exhaust structure comprises a plurality of second steam exhaust holes uniformly distributed on the upper part of the other side of the cavity U plate.

[0014] Optionally, a wind deflector structure is arranged between the magnetron and the second air inlet hole for guiding the heated air and steam of the magnetron to the second air inlet hole.

[0015] Optionally, the wind deflector structure comprises an inclined plate obliquely arranged between the magnetron and the second air inlet hole, and an upper plate and a lower plate respectively arranged on the upper side and the lower side of the inclined plate, both ends of the inclined plate are fixed to the magnetron and the outer wall of the cavity, and the upper plate and the lower plate are used to close the upper side and the lower side of the inclined plate.

[0016] After the above technical scheme is adopted, the microwave oven has the following beneficial effects:

[0017] The first steam exhaust structure in communication with the fan assembly is formed on the cavity, so that when the microwave oven is used to cook food, part of the steam in the cavity is sucked into the fan assembly, the fan assembly blows it into the magnetron, the steam is evaporated by the magnetron and blown back into the cavity, and finally the steam is discharged together with the remaining steam in the cavity, thereby reducing the amount of steam discharged to the outside of the microwave oven, improving the working environment of the microwave oven, prolonging the service life of the microwave oven, and improving the heat dissipation effect of the magnetron when the steam enters the magnetron, optimizing the condensation of water in the cavity, improving the exhaust and drying effect of the cavity, and fully drying and dehumidifying. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 is a schematic diagram of the overall structure of the embodiment;

[0020] Figure 2 is a cross-sectional view for embodying the steam flow trajectory in the embodiment;

[0021] Figure 3 is an exploded view of the furnace body in the embodiment;

[0022] Figure 4 is an exploded view of the furnace body after removing the shell, furnace door and base in the embodiment;

[0023] Figure 5 is an exploded view of the fan assembly in the embodiment;

[0024] Figure 6 is a display diagram of the air guide cover in the embodiment;

[0025] Figure 7 is an exploded view of the cavity in the embodiment;

[0026] Figure 8 is a display diagram of the cavity U plate in the embodiment;

[0027] Figure 9 is a display diagram of the air guide plate structure in the embodiment.

[0028] Explanation of reference numerals: 100, furnace body; 10, cavity; 11, cavity U plate; 12, cavity front plate; 13, cavity rear plate; 14, cavity top plate; 15, waveguide tube; 101, first steam discharge structure; 102, second steam discharge structure; 103, air duct; 104, first air inlet hole; 105, second air inlet hole; 20, magnetron; 30, fan assembly; 31, air guide cover; 311, air inlet; 312, air outlet; 32, fan blade; 33, shaded-pole motor; 34, motor fixing support; 40, air guide plate structure; 41, inclined plate; 42, upper plate; 43, lower plate; 50, furnace door; 60, base; 70, shell; 80, control box. DETAILED DESCRIPTION

[0029] The following will combine the drawings in the embodiments of the present application to make a detailed description. Figures 1-9The technical solutions in the embodiments of the present application are clearly and completely described, and obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0031] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled persons in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0032] The present embodiment relates to a microwave oven, referring to Figures 1-9 , comprising a furnace body 100 with a cavity 10, a magnetron 20 arranged on one side of the cavity 10, a first steam exhaust structure 101 opened on the cavity 10, and a fan assembly 30 arranged at the magnetron 20, wherein the air inlet 311 of the fan assembly 30 communicates with the first steam exhaust structure 101, so that part of the steam in the cavity 10 can be sucked out by the fan assembly 30 and blown into the magnetron 20.

[0033] When the microwave oven is working, the magnetron 20 generates microwaves to heat the food, and the temperature of the magnetron 20 is increased (the working temperature of the magnetron 20 is about 250°C), and a large amount of steam is generated in the cavity 10. Since the first steam exhaust structure 101 is communicated with the air inlet 311 of the fan assembly 30, part of the steam in the cavity 10 can be sucked into the fan assembly 30 and blown into the magnetron 20, and the part of the steam is secondarily evaporated by the magnetron 20, and then the high-temperature steam is blown back into the cavity 10 and is discharged together with the remaining steam in the cavity 10, which optimizes the condensation of water in the cavity 10 and reduces the amount of steam discharged outside the cavity 10. At the same time, the magnetron 20 is cooled, and the heat dissipated from the magnetron 20 is recycled and utilized.

[0034] Further, referring to Figure 2 and Figure 3 , the cavity 10 is formed with an air duct 103, and the fan assembly 30 and the magnetron 20 are located in the air duct 103, and the first steam exhaust structure 101 is communicated with the air duct 103.

[0035] The cavity 10 and the air duct 103 are located in the oven body 100, so that part of the steam in the cavity 10 is sucked into the air duct 103 by the fan assembly 30, and then blown to the magnetron 20 by the fan assembly 30.

[0036] Further, referring to Figure 2 and Figure 7 , the fan assembly 30 comprises a wind guide cover 31 fixedly installed in the air duct 103, a fan blade 32 rotatably arranged at an air outlet 312 of the wind guide cover 31, and a shield motor 33 for driving the fan blade 32 to rotate, wherein the wind guide cover 31 has an air inlet 311 and the air outlet 312, the air inlet 311 of the wind guide cover 31 is an open area formed in the side wall of the wind guide cover 31, and the open area is communicated with the first steam exhaust structure 101 to enable the steam in the cavity 10 to be sucked into the wind guide cover 31 and blown out from the air outlet 312 of the wind guide cover 31. The fan blade 32 is rotatably arranged at the air outlet 312 of the wind guide cover 31, and in this embodiment, the fan blade 32 protrudes from the air outlet 312 of the wind guide cover 31, and in other embodiments, the fan blade 32 can be arranged flush with the air outlet 312 of the wind guide cover 31 or inside the air outlet 312 of the wind guide cover 31, which is not limited herein.

[0037] In addition, in order to facilitate the fixation of the shield motor 33, the fan assembly 30 further comprises a motor fixing bracket 34 fixedly installed in the wind guide cover 31, the shield motor 33 is fixedly installed on the motor fixing bracket 34, and the output shaft of the shield motor 33 is fixedly connected to the fan blade 32 after penetrating through the motor fixing bracket 34.

[0038] When the shield motor 33 works, the shield motor 33 drives the fan blade 32 to rotate, and the inner side of the fan blade 32 generates negative pressure, so that the steam in the cavity 10 is sucked out from the first steam exhaust structure 101, enters the air duct 31 through the open area of the side wall of the air duct 31, and then is blown by the fan blade 32 to the magnetron 20, so that the steam is secondarily evaporated by the temperature in the magnetron 20, that is, the water vapor in the steam is evaporated, the humidity of the steam is reduced, and the temperature of the steam is increased, and finally the high-temperature steam is blown back into the cavity 10, so that the steam in the cavity 10 is less likely to condense into water, the steam emission is reduced, and the environment around the furnace body 100 is less likely to be humid.

[0039] Further, the second steam exhaust structure 102 is further provided on the cavity 10 and communicates with the outside, the second steam exhaust structure 102 is used for exhausting the steam generated in the cavity, the hot steam and the hot air after being heated by the magnetron out of the cavity, so that the steam emission is reduced, and the drying and dehumidifying effect of the cavity is achieved.

[0040] Further, referring to Figure 3 and Figure 4 , the first air inlet hole 104 which communicates with the air duct 31 is provided on the cavity 10 corresponding to the position of the air duct 31, and the second air inlet hole 105 which communicates with the magnetron 20 is further provided on the cavity 10, and the second air inlet hole 105 is in the same plane as the first steam exhaust structure 101.

[0041] By providing the first air inlet hole 104 on the cavity 10 corresponding to the position of the air duct 31, the air outside can enter the air duct 31 through the first air inlet hole 104, so that the air outside can be continuously blown into the magnetron 20 when the shield motor 33 works, so as to achieve the cooling and heat dissipation of the magnetron 20. Since the steam in the cavity 10 is also blown into the magnetron 20, the air and the steam heated by the magnetron 20 enter the cavity 10 through the second air inlet hole 105. At the same time, the second air inlet hole 105 and the first steam exhaust structure 101 are arranged in the same plane, so that the steam in the cavity 10 can be quickly blown back into the cavity 10 after being sucked out, and the steam exhaust efficiency is improved.

[0042] Further, the cavity 10 provided by the embodiment includes a cavity U plate 11, a cavity front plate 12, a cavity rear plate 13, and a cavity top plate 14. The opening of the cavity U plate 11 faces upward, the first steam exhaust structure 101 and the second steam exhaust structure 102 are respectively located on both sides of the cavity U plate 11, the cavity front plate 12, the cavity rear plate 13 and the cavity top plate 14 cooperate to close the cavity U plate 11, and one side of each of the cavity front plate 12 and the cavity rear plate 13 extends outwardly from the cavity U plate 11 to form an air duct 103 in cooperation. The first air inlet hole 104 is located at the position of the cavity rear plate 13 close to the air duct 103.

[0043] Through the above setting, part of the steam in the cavity 10 is sucked into the air duct 103 by the fan assembly 30 through the first steam exhaust structure 101 arranged on one side of the cavity U plate 11, and then blown into the magnetron 20, and then blown back into the cavity 10 from the second air inlet hole 105 after being evaporated by the magnetron 20, and finally discharged from the second steam exhaust structure 102 arranged on the other side of the cavity U plate 11 together with the remaining steam in the cavity 10.

[0044] In addition, the cavity 10 further comprises a waveguide 15 in communication with the magnetron 20, the waveguide 15 is welded to one side of the cavity U plate 11, and the waveguide 15 is located at a position between the first steam exhaust structure 101 and the second air inlet hole 105.

[0045] Through the communication between the waveguide 15 and the magnetron 20, the microwaves generated by the magnetron 20 are transmitted to the cavity 10 through the waveguide 15, so that the microwaves are prevented from leaking out.

[0046] Further, the first steam exhaust structure 101 comprises a plurality of first steam exhaust holes arranged in an array, the first steam exhaust holes and the second air inlet hole 105 are uniformly distributed between the middle and the upper part of the cavity U plate 11, and the second steam exhaust structure 102 comprises a plurality of second steam exhaust holes uniformly distributed on the upper part of the other side of the cavity U plate 11.

[0047] Uniformly arranging the first steam exhaust structure 101 and the second air inlet hole 105 between the middle and the upper part of the cavity U plate 11 makes the steam in the cavity 10 more easily enter and exit the cavity 10, and uniformly distributing the second steam exhaust structure 102 on the upper part of the other side of the cavity U plate 11 is more conducive to the discharge of the remaining steam, hot air and hot steam in the cavity 10, because the hot air and the hot steam will rise to the top of the cavity 10 after being blown into the cavity 10.

[0048] Further, with reference to Figure 4 and Figure 6 In order to enable the air and steam heated by the magnetron 20 to smoothly enter the cavity 10 from the second air inlet hole 105, and to prevent the hot air and the hot steam from randomly flowing in the air duct 103, a wind deflector structure 40 is arranged between the magnetron 20 and the second air inlet hole 105 for guiding the air and steam heated by the magnetron 20 to the second air inlet hole 105.

[0049] Specifically, the wind deflector structure 40 comprises an inclined plate 41 arranged obliquely between the magnetron 20 and the second air inlet hole 105, and an upper plate 42 and a lower plate 43 arranged respectively on the upper side and the lower side of the inclined plate 41, both ends of the inclined plate 41 are fixedly connected to the magnetron 20 and the outer wall of the cavity 10, and the upper plate 42 and the lower plate 43 are used to close the upper side and the lower side of the inclined plate 41, so that the hot air and the hot steam blown out of the magnetron 20 can smoothly pass through the second air inlet hole 105 into the cavity 10 in the wind deflector structure 40.

[0050] It can be understood that, under the action of the inclined plate 41, the upper plate 42 and the lower plate 43, the hot air and the hot steam blown out from the magnetron 20 will move to the second air inlet hole 105 under the guidance of the inclined plate 41, and then enter the cavity 10 through the second air inlet hole 105, avoiding the hot air and the hot steam to run around in the air duct 103, thereby improving the exhaust efficiency of the steam in the cavity 10.

[0051] Further, the furnace body 100 further comprises a furnace door 50, a base 60, an outer shell 70 and a control box 80, wherein the furnace door 50 and the control box 80 are both arranged at the front end of the cavity 10, the furnace door 50 is rotatably connected to one side of the cavity front plate 12, and the furnace door 50 is used to open or close the cavity 10 to facilitate the putting in or taking out of food. The control box 80 component is electrically connected with the fan assembly 30 and the magnetron 20, and is used to control the operation of the fan assembly 30 and the magnetron 20, and the control box 80 is located away from the connection end of the cavity front plate 12 and the furnace door 50. The base 60 is fixedly installed at the bottom of the cavity 10, and is used to support the cavity 10. The outer shell 70 is fixedly installed outside the cavity 10, and can protect the cavity 10, and cooperates with the base 60 to close the air duct 103 formed by the cavity front plate 12 and the cavity rear plate 13.

[0052] It can be understood that, in use, the furnace door 50 is opened by rotating the furnace door 50, at this time the food to be heated is put into the cavity 10 and the furnace door 50 is closed, the magnetron 20 and the fan assembly 30 are controlled to operate by the control box 80 component, the food is heated by the microwaves generated by the magnetron 20, the fan assembly 30 inhales the air outside and part of the steam generated in the cavity 10 and blows it to the magnetron 20 to heat the magnetron 20, and at the same time, the heat generated by the magnetron 20 is used to heat the steam and the air, then the heated steam and air are blown into the cavity 10 from the second air inlet hole 105, and finally the remaining steam in the cavity 10 and the heated steam and air are discharged from the second steam discharge structure 102.

[0053] In addition, in combination with Figure 3 In this embodiment, there is a gap between the cavity 10 and the outer shell 70 and the base 60, and the steam discharged from the second air outlet hole is actually discharged into the gap formed by the cavity 10, the outer shell 70 and the base 60. A plurality of through holes are formed in the base 60 and communicate with the gap, so that the steam discharged from the cavity 10 is discharged from the through holes of the base 60.

[0054] The working principle of the utility model is roughly as follows: when the microwave oven works, the magnetron 20 works to emit microwaves to heat food, the temperature of the magnetron 20 rises, at this time, the fan assembly 30 operates, on the one hand, the outside air is continuously blown to the magnetron 20 through the first air inlet hole 104, on the other hand, part of the steam generated in the cavity 10 is sucked out and blown to the magnetron 20 through the first steam exhaust structure 101 to cool the magnetron 20, at the same time, the heat of the magnetron 20 is used to evaporate the water vapor in the steam and heat the air, and the hot steam and hot air are blown back into the cavity 10 through the second air inlet hole 105, the hot steam and hot air exchange heat with the remaining steam in the cavity 10 to reduce the condensation of steam into water, finally, the hot steam and hot air are discharged from the second steam exhaust structure 102 together with the remaining air in the cavity 10, since part of the steam is sucked out by the fan assembly 30 and blown into the magnetron 20 to evaporate, the steam emission is reduced, the problem that the surrounding environment of the microwave oven is humid due to too much steam emission is avoided, the working environment of the microwave oven is improved, and the service life of the microwave oven is prolonged.

[0055] The above is only used to illustrate the technical scheme of the utility model and is not limited, other modifications or equivalent replacements of the technical scheme of the utility model made by the ordinary skilled in the art should be covered in the claim range of the utility model.

Claims

1. A microwave oven characterized by comprising: The application relates to a furnace body (100) comprising a cavity (10), a magnetron (20) arranged at one side of the cavity (10), a first steam exhaust structure (101) arranged on the cavity (10), and a fan assembly (30) arranged at the magnetron (20), wherein the air inlet (311) of the fan assembly (30) is communicated with the first steam exhaust structure (101), and part of the steam in the cavity (10) is sucked out by the fan assembly (30) and blown into the magnetron (20).

2. A microwave oven according to claim 1, wherein One side of the cavity (10) is formed with an air duct (103), and the fan assembly (30) and the magnetron (20) are arranged in the air duct (103), wherein the first steam exhaust structure (101) is communicated with the air duct (103).

3. A microwave oven according to claim 2, wherein The fan assembly (30) comprises a wind guide cover (31) fixedly arranged in the air duct (103), a fan blade (32) rotatably arranged at the air outlet (312) of the wind guide cover (31), and a cover motor (33) for driving the fan blade (32) to rotate, wherein the air outlet (312) of the wind guide cover (31) faces the magnetron (20).

4. A microwave oven according to claim 3, wherein The air inlet (311) of the fan assembly (30) is an open area arranged on the side wall of the wind guide cover (31), and the open area is communicated with the first steam exhaust structure (101).

5. The microwave oven as claimed in claim 3, wherein The cavity (10) is further arranged with a second steam exhaust structure (102) communicated with the outside.

6. A microwave oven according to claim 5, wherein The cavity (10) is arranged with a first air inlet hole (104) communicated with the wind guide cover (31) at the position corresponding to the wind guide cover (31), and is further arranged with a plurality of second air inlet holes (105) communicated with the magnetron (20), wherein the plurality of second air inlet holes (105) are arranged on the same plane as the first steam exhaust structure (101).

7. A microwave oven according to claim 6, wherein The cavity (10) comprises a cavity U-shaped plate (11), a cavity front plate (12), a cavity rear plate (13) and a cavity top plate (14), wherein the first steam exhaust structure (101) and the second steam exhaust structure (102) are arranged on the two sides of the cavity U-shaped plate (11), and the first air inlet hole (104) is arranged on the cavity rear plate (13).

8. A microwave oven according to claim 7, wherein The first steam exhaust structure (101) comprises a plurality of first exhaust holes arranged in an array, and the first exhaust holes and the second air inlet holes (105) are uniformly arranged between the middle part and the upper part of one side of the cavity U-shaped plate (11), and the second steam exhaust structure (102) comprises a plurality of second steam exhaust holes uniformly arranged on the upper part of the other side of the cavity U-shaped plate (11).

9. The microwave oven as claimed in claim 6, wherein The magnetron (20) and the second air inlet hole (105) are arranged with a wind guide plate structure (40) for guiding the air and steam heated by the magnetron (20) to the second air inlet hole (105).

10. The microwave oven as claimed in claim 9, wherein The wind guide plate structure (40) comprises an inclined plate (41) arranged between the magnetron (20) and the second air inlet hole (105), and an upper plate (42) and a lower plate (43) arranged on the upper side and the lower side of the inclined plate (41) respectively, wherein the two ends of the inclined plate (41) are fixed to the magnetron (20) and the outer wall of the cavity (10) respectively, and the upper plate (42) and the lower plate (43) are used for sealing the upper side and the lower side of the inclined plate (41).

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