CN110056914B

CN110056914B - Microwave oven with a heat exchanger

Info

Publication number: CN110056914B
Application number: CN201910274953.XA
Authority: CN
Inventors: 包捷; 陆海东; 赵超一; 马启明
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-10-09
Anticipated expiration: 2039-04-03
Also published as: CN110056914A

Abstract

The invention discloses a microwave oven, which comprises: a housing provided with an air outlet; the cavity is arranged in the shell, and an exhaust port is arranged on the cavity; the air inlet cover is arranged between the cavity and the shell and is provided with an air inlet channel communicated with the air outlet and a water outlet communicated with the air inlet channel; and the water receiving piece is arranged below the air inlet cover and communicated with the water outlet so as to receive the condensed water in the air inlet channel. The technical scheme of the invention can prevent the condensed water formed by steam from contacting with the circuit device.

Description

Microwave oven with a heat exchanger

Technical Field

The invention relates to the field of cooking appliances, in particular to a microwave oven.

Background

The existing microwave oven with cooking function generates steam through a steam generating device, and the steam enters a cooking container through a steam channel to cook food. Most of the steam discharged by the exhaust device is directly discharged into the air, and a small part of the steam can be cooled into condensed water, and the condensed water easily flows to the surface of a circuit device, so that short circuit is caused, and the use safety of a user is seriously influenced.

Disclosure of Invention

The invention mainly aims to provide a microwave oven, aiming at preventing condensed water formed by steam from contacting with a circuit device.

In order to achieve the above object, the present invention provides a microwave oven, comprising:

a housing provided with an air outlet;

the cavity is arranged in the shell, and an exhaust port is arranged on the cavity;

the air inlet cover is arranged between the cavity and the shell and is provided with an air inlet channel communicated with the air outlet and a water outlet communicated with the air inlet channel; and the number of the first and second groups,

and the water receiving piece is arranged below the air inlet cover and is communicated with the water outlet so as to receive the condensed water in the air inlet channel.

Optionally, the housing includes a bottom plate assembly located on the bottom surface of the cavity, the water receiving member includes a first water receiving box and a drain pipe, the first water receiving box is located on the bottom plate assembly, one end of the drain pipe is connected with the water outlet, and the other end of the drain pipe is communicated with the first water receiving box.

Optionally, a first water receiving tank is arranged on the bottom plate assembly, a drain hole is formed in the bottom of the first water receiving tank, the first water receiving box is located under the drain hole, and the drain pipe is communicated with the first water receiving tank.

Optionally, a tubular joint is arranged on the bottom plate assembly, an inner hole of the tubular joint forms part of the first water receiving tank, and the drain pipe is sleeved on the tubular joint.

Optionally, the microwave oven further comprises a hot air assembly, the hot air assembly is fixed to the outer side of the cavity, a second water receiving tank is arranged on the bottom plate assembly, and the second water receiving tank is arranged right below the joint of the hot air assembly and the cavity and communicated with the first water receiving box.

Optionally, the shell further comprises an oven door assembly, the first water receiving box is located at the lower end of the oven door assembly, and the first water receiving box is provided with an upward opening to receive condensed water dropped by the oven door assembly.

Optionally, the microwave oven further comprises a water tank and an evaporator which are connected with each other, the water tank and the first water receiving box are arranged along the extending direction of the lower end of the oven door assembly, a water guide groove is formed in the top surface of the water tank and used for receiving condensed water dropping from the oven door assembly, and a water guide hole is formed in the bottom of the water guide groove and communicated with the first water receiving box.

Optionally, a second water receiving box is arranged on the surface of the water tank, which is away from the first water receiving box, and the second water receiving box is located at the lower end of the oven door assembly to receive condensed water dripping from the oven door assembly.

Optionally, the air inlet hood includes the cover body and box body, be equipped with on the cover body inlet channel, just the bottom surface of the cover body is equipped with the intercommunication mouth, the box body is open cavity form up to fix the bottom surface of the cover body, the bottom surface of box body is equipped with the outlet, the intercommunication mouth is located in the box body.

Optionally, the microwave oven further comprises an exhaust hood disposed on the housing and covering the air outlet.

Optionally, the exhaust hood has a flow guide cavity and a plurality of exhaust passages, the flow guide cavity has a first cavity wall and a second cavity wall which are oppositely arranged and extend in the up-down direction, the first cavity wall is provided with an opening and communicated with the air outlet, the top surface of the second cavity wall is spaced from the top surface of the exhaust hood to form an exhaust gap, and the exhaust gap is located above the opening and communicated with the plurality of exhaust passages.

Optionally, a stopper is arranged in the exhaust hood, the stopper includes a substrate and a baffle, the substrate is fixed to the bottom surface of the exhaust hood, and the baffle is connected to the substrate and forms the second cavity wall.

Optionally, a water collecting tank is arranged on the top surface of the substrate, and the baffle is arranged in the water collecting tank.

According to the invention, the water outlet is arranged on the air inlet cover, the air inlet cover is communicated with the cavity and the shell, and steam in the cavity passes through the longer pipeline when reaching the air inlet cover, so that part of steam is condensed into condensed water, the steam and the condensed water are shunted in the air inlet cover, the steam can be discharged from the air outlet on the shell, the condensed water is deposited in the air inlet cover and is discharged into the first water receiving box through the water outlet, thus the short circuit of a circuit device caused by the condensed water dropping between the shell and the cavity is avoided, and meanwhile, the water accumulation on a table top caused by the condensed water directly discharged outside along with the steam can also be avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a microwave oven according to an embodiment of the present invention;

FIG. 2 is a schematic view of the microwave oven shown in FIG. 1, as viewed from the rear;

FIG. 3 is a schematic rear view of the microwave oven of FIG. 1 with the rear housing cover removed;

fig. 4 is a schematic structural view of the microwave oven of fig. 1, in which an oven door assembly is opened;

FIG. 5 is a schematic view of the structure of a bracket of the baseplate assembly of FIG. 1;

FIG. 6 is a schematic plan view of a cover plate of the baseplate assembly of FIG. 1;

FIG. 7 is a schematic structural diagram of the cover plate in FIG. 6;

FIG. 8 is an enlarged schematic view at A of FIG. 7;

FIG. 9 is a schematic view of the construction of the bottom plate assembly of FIG. 1;

FIG. 10 is a schematic plan view of the base plate of FIG. 9;

FIG. 11 is an enlarged schematic view at B of FIG. 9;

fig. 12 is a schematic structural view of a first water receiving box, a second water receiving box and a water tank of the microwave oven in fig. 1;

FIG. 13 is a schematic view of the first receptacle of FIG. 12 in partial cutaway;

fig. 14 is a plan view of the first water receiving box, the second water receiving box and the water tank in fig. 12;

FIG. 15 is a schematic view, partly in section, of the second receptacle of FIG. 12;

FIG. 16 is a schematic view of the structure of the inlet cowl of FIG. 1;

FIG. 17 is an exploded view of the intake shroud, rear housing shroud, and exhaust shroud of FIG. 1;

FIG. 18 is a schematic view of the exhaust hood of FIG. 17;

FIG. 19 is a schematic view of the exhaust hood of FIG. 18 from another perspective, wherein the stop is not installed;

FIG. 20 is a schematic view, partially in section, of the exhaust hood of FIG. 17;

FIG. 21 is a schematic view of the stopper of FIG. 17.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				11	Furnace door assembly	41	First inner wall
12	Floor assembly	42	First inclined section
				121	First water receiving tank	51	Drain pipe
122	Drain hole	52	Evaporator with a heat exchanger
				123	Tubular joint	53	Water tank
124	Second water receiving tank	531	Water chute
				125	Cover plate	532	Water guide hole
126	Base plate	54	Water pump
				127	Support frame	60	Second water receiving box
13	Rear shell cover	61	Second inner wall
				131	Air outlet	62	Second inclined section
20	Cavity body	63	Drawing piece
				21	Exhaust port	70	Exhaust hood
22	Steam inlet	71	Flow guide cavity
				30	Air inlet cover	72	Exhaust passage
31	Cover body	73	First chamber wall
				311	Upper cover	731	Opening of the container
312	Lower cover	74	Second chamber wall
				313	Air inlet channel	741	Exhaust gap
314	Communication port	80	Stop piece
				32	Box body	81	Substrate
321	Water outlet	811	Water accumulating tank
				40	First water receiving box	82	Baffle plate

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a microwave oven.

In an embodiment of the present invention, referring to fig. 1 to 5 in combination, the microwave oven includes a housing, a cavity 20, an air inlet cover 30, a water receiving member, an evaporator 52, and a water tank 53.

Referring to fig. 17, the housing is provided with an air outlet 131, the housing is substantially square, and the air outlet 131 is disposed on a side wall or a top wall of the housing. The housing may include a door assembly 11 and a bottom plate assembly 12, the door assembly 11 covers the opening of the cavity 20 and is openable and closable relative to the cavity 20, and the bottom plate assembly 12 is located at the bottom of the cavity 20 and is used for supporting the cavity 20. In addition, the housing further comprises a rear housing cover 13, the rear housing cover 13 is arranged opposite to the oven door assembly 11, and the air outlet 131 is arranged on the rear housing cover 13.

The cavity 20 is arranged in the shell, and the cavity 20 is provided with an exhaust port 21, and the exhaust port 21 is used for exhausting redundant steam in the cavity 20. Typically, there is a circumferential gap between the chamber 20 and the housing for receiving the evaporator 52 and electronic components and the like.

Referring to fig. 16, the inlet hood 30 is disposed between the chamber 20 and the housing and has an inlet passage 313 and a drain 321 communicating with the inlet passage 313, the inlet passage 313 communicating the outlet 131 with the outlet 21, so that the steam in the chamber 20 is exhausted from the outlet 131 of the housing.

The water receiving member is disposed under the inlet cowl 30 and communicates with the drain port 321 to receive the condensed water in the inlet passage 313. Specifically, the water receiving member includes a first water receiving box 40 (shown in fig. 12) and a drain pipe 51, and the first water receiving box 40 is disposed below the air intake hood 30. Optionally, a first water-receiving box 40 is arranged on the bottom plate assembly 12, so that the air inlet hood 30 can drain water from top to bottom. In addition, the first water receiving box 40 may be disposed on a side wall of the housing. One end of the drain pipe 51 is connected to the drain port 321, and the other end is communicated with the first water receiving box 40, so that the condensed water in the air intake hood 30 is drained to the first water receiving box 40. In addition, the water receiving member may only include the first water receiving box 40, or the water receiving member may be a water receiving groove or the like disposed on the bottom plate assembly 12.

The evaporator 52 and the water tank 53 are both disposed between the housing and the cavity 20, the cavity 20 is provided with a steam inlet 22, an arrow in fig. 4 indicates a flow direction of steam, one end of the evaporator 52 is communicated with the water tank 53, the other end of the evaporator 52 is communicated with the steam inlet 22, water in the water tank 53 flows into the evaporator 52, is evaporated to form steam, and then flows into the cavity 20 (please refer to fig. 1 and 4 in combination, the arrow in fig. 1 indicates a flow direction of water and steam, and the arrow in fig. 4 indicates a flow direction of steam). A water pump 54 is provided in a pipe connecting the water tank 53 and the evaporator 52. The water tank 53 is mounted on the base plate assembly 12, and specifically, the water tank 53 can be clamped by providing a clamp on the base plate assembly 12. In addition, a water pump 54 is also mounted to the floor assembly 12.

In the invention, the water outlet 321 is arranged on the air inlet cover 30, the air inlet cover 30 is communicated with the cavity 20 and the shell, and steam in the cavity 20 passes through a longer pipeline when reaching the air inlet cover 30, so that part of the steam is condensed into condensed water, the steam and the condensed water are shunted in the air inlet cover 30, the steam can be discharged from the air outlet 131 on the shell, the condensed water is deposited in the air inlet cover 30 and is discharged into the first water receiving box 40 through the water outlet 321, thus the phenomenon that condensed water drops between the shell and the cavity 20 to cause short circuit of a circuit device is avoided, and meanwhile, the phenomenon that the condensed water is directly discharged outside along with the steam to cause water accumulation on a table top is also avoided.

Referring to fig. 6 to 11, the arrows indicate the water flow direction. In one embodiment, the bottom plate assembly 12 is provided with a first water receiving tank 121, a water discharging hole 122 is provided at the bottom of the first water receiving tank 121, the first water receiving box 40 is located right below the water discharging hole 122, and the water discharging pipe 51 is communicated with the first water receiving tank 121. In this embodiment, the first water receiving box 40 is communicated with the drainage hole 122, and can receive the condensed water drained from the drainage hole 122. Carry out the drainage through setting up first water receiving tank 121, can make things convenient for first water receiving box 40's setting for first water receiving box 40 can set up in suitable position, and its setting position is more nimble, for example is close to one side of furnace gate subassembly 11, makes things convenient for first water receiving box 40 to be taken out and pour water. In one embodiment, a tubular joint 123 is disposed on the bottom plate assembly 12, and an inner hole of the tubular joint 123 forms part of the first water receiving tank 121, and the drain pipe 51 is disposed on the tubular joint 123. Specifically, the tubular joint 123 is a semicircular joint, and a buckle or the like can be further arranged on the tubular joint 123 to clamp and fix the drain pipe 51, so as to prevent the drain pipe 51 from being separated. By fitting the drain pipe 51 directly over the tubular fitting 123, installation is made easier and the drain pipe 51 can be prevented from moving. Optionally, the tubular fitting 123 extends in the transverse direction. In addition, the drain pipe 51 may directly extend into the first drain tank 121 to discharge the condensed water to the first drain tank 121.

Further, the microwave oven further includes a hot air assembly (not shown) fixed outside the cavity 20, the hot air assembly being capable of generating hot air, and a hot air outlet of the hot air assembly being communicated with the cavity 20 and capable of introducing hot air into the cavity 20. A second water receiving groove 124 is formed in the bottom plate assembly 12, and the second water receiving groove 124 is arranged right below the joint of the hot air assembly and the cavity 20 and communicated with the first water receiving box 40. Since the cavity 20 is provided with meshes for communicating with the hot air assembly, and part of the steam is discharged from the meshes and condensed into water flow, and the water flow permeates through the installation fit clearance between the hot air assembly and the cavity 20, the second water receiving tank 124 is arranged on the bottom plate assembly 12, so that the condensed water permeating through the installation fit clearance between the hot air assembly and the cavity 20 can be recovered to the first water receiving box 40, and the circuit elements are prevented from being wetted. In this embodiment, the first water receiving tank 121 and the second water receiving tank 124 together form a trough-like structure similar to a triangle.

In an embodiment, the bottom plate assembly 12 is composed of a plurality of plate bodies, specifically, the bottom plate assembly 12 includes a cover plate 125, a bottom plate 126 and a bracket 127 which are sequentially stacked from top to bottom, the first water receiving tank 121 and the second water receiving tank 124 are both disposed on the cover plate 125, the first water receiving tank 40, the second water receiving tank 60, the water tank 53 and the water pump 54 are all disposed on the bracket 127, and the water discharge hole 122 penetrates through the cover plate 125 and the bottom plate 126. Of course, the floor assembly 12 may also be a unitary plate.

Referring to fig. 12 and 13, in an embodiment, the first water receiving box 40 is located at a lower end of the oven door assembly 11, and the first water receiving box 40 has an upward opening to receive condensed water dropping from the oven door assembly 11. Specifically, the first water receiving box 40 is partially exposed at the outer edges of the cover plate 125 and the bottom plate 126. The steam in the cavity 20 may be condensed on the oven door assembly 11 except flowing out through the above path, and at this time, the condensed water may directly flow down along the inner surface of the oven door assembly 11, so the first water receiving box 40 is disposed at the lower end of the oven door assembly 11, and can receive part or all of the condensed water dropping from the oven door assembly 11, and prevent the condensed water from flowing everywhere. In order to prevent the first water receiving box 40 from being excessively exposed outside the oven door assembly 11 and ensure that the first water receiving box 40 can receive the condensed water, in an embodiment, the first water receiving box 40 has a first inner wall 41, the first inner wall 41 extends along the lower end of the oven door assembly 11 and is located outside the oven door assembly 11, the first inner wall 41 has a first inclined section 42, the first inclined section 42 is connected with the top surface of the first inner wall 41 and is inclined inward in the upward and downward direction, so that the drainage can be facilitated, and the condensed water dropping from the oven door assembly 11 can be drained to the first water receiving box 40.

Referring to fig. 14, the arrow in fig. 14 is a water flow direction, in an embodiment, the water tank 53 and the first water receiving box 40 are arranged along an extending direction of the lower end of the oven door assembly 11, that is, along a transverse direction, a water guide groove 531 is disposed on a top surface of the water tank 53, the water guide groove 531 faces the lower end of the oven door assembly 11 to receive condensed water dropping from the oven door assembly 11, and a water guide hole 532 is disposed on a bottom of the water guide groove 531 and is communicated with the first water receiving box 40. In this embodiment, the water guide groove 531 extends along an extending direction of the lower end of the oven door assembly 11 and partially extends into the first water receiving box 40, and a portion of the water guide groove 531 extending into the first water receiving box 40 is provided with a water guide hole 532, so that the collected condensed water is discharged into the first water receiving box 40. In the embodiment of the present invention, if the length of the first water receiving box 40 is set to be too large, the occupied space of the microwave oven will be too large, so in this embodiment, the length of the first water receiving box 40 is smaller than the length of the lower end of the oven door assembly 11, and a part of the space for placing the water supply tank 53 is left, which can reduce the occupied space. The diversion trench arranged on the water tank 53 and the first water receiving box 40 together receive the condensed water dropped from the oven door assembly 11, so that the condensed water is prevented from dropping to the bottom plate assembly 12.

Referring to fig. 15, in an embodiment, a second water receiving box 60 is disposed on a surface of the water tank 53 away from the first water receiving box 40, and the second water receiving box 60 is located at a lower end of the oven door assembly 11 to receive condensed water dropping from the oven door assembly 11. In this embodiment, the downward orthographic projection of the lower end of the oven door assembly 11 is entirely located in the groove formed by the first water receiving box 40, the second water receiving box 60 and the water guiding groove 531, and the first water receiving box 40, the second water receiving box 60 and the water guiding groove 531 can collectively recycle all the condensed water dropping from the oven door assembly 11.

In an embodiment, the second water receiving box 60 has a second inner wall 61, the second inner wall 61 extends along the lower end of the oven door assembly 11 and is located outside the oven door assembly 11, the second inner wall 61 has a second inclined section 62, the second inclined section 62 is connected with the top surface of the second inner wall 61 and is inclined inward in the upward and downward direction, so that drainage can be facilitated, and condensed water dropping from the oven door assembly 11 can be drained to the second water receiving box 60.

In this embodiment, in order to pour out the condensed water in the first water receiving box 40 and the second water receiving box 60 in time, the first water receiving box 40 is movably connected to the bottom plate assembly 12, and the second water receiving box 60 is also movably connected to the bottom plate assembly 12. Similarly, the tank 53 is movably connected to the base plate assembly 12 to facilitate timely refilling of the tank 53. Specifically, a drawing opening is formed in a side surface of the bottom plate assembly 12, the drawing opening and the oven door assembly 11 are located on the same side, and the first water receiving box 40, the second water receiving box 60 and the water tank 53 can be drawn out from the drawing opening. In addition, first water receiving box 40, second water receiving box 60 and water tank 53 all can carry out the joint through the buckle with bottom plate assembly 12, avoid rocking or removing. In order to facilitate the drawing of the water tank 53, a drawer 63 is provided on the water tank 53, the drawer 63 is substantially in the form of an elongated plate and is located on the outer side of the water tank 53, and a handle or a groove may be provided on the drawer 63 for the user to act. The second water receiving box 60 is arranged on the drawer 63, and optionally, the second water receiving box 60 and the drawer 63 are integrally formed.

Referring to fig. 16 and 17, the arrows in the drawings indicate the flow direction of steam, and the downward arrow in fig. 17 indicates the flow direction of condensed water. In order to achieve better water-vapor separation and avoid the condensed water from flowing out to the air outlet 131, in an embodiment, the air inlet channel 313 extends along the transverse direction, and the water outlet 321 is disposed on the bottom wall of the air inlet cover 30, so that the steam flows along the transverse direction, and the condensed water drops downward to achieve water-vapor separation. Specifically, the air inlet cover 30 includes a cover 31 and a box 32, an air inlet passage 313 is provided on the cover 31, a communication port 314 is provided on the bottom surface of the cover 31, the box 32 is in a cavity shape with an upward opening and is fixed on the bottom surface of the cover 31, a water outlet 321 is provided on the bottom surface of the box 32, and the communication port 314 is located in the box 32. In this implementation, through add a box body 32 under cover body 31, can guarantee that the comdenstion water in the cover body 31 discharges to the box body 32 fast in, better realization steam separation. In addition, in the case of the original structure including only the cover 31, the structure of the cover 31 does not need to be changed excessively, that is, the mold structure of the cover 31 does not need to be changed, and only the communication port 314 needs to be formed after the cover 31 is molded, or only the structure of the mold for forming the communication port 314 needs to be added to the mold, and thus, the change is small, and therefore, the increase in the mold cost of the cover 31 can be avoided. In addition, by adding the box 32, the box 32 can be disposed at a position of the cover 31 close to the cavity 20, and the drain port 321 is disposed close to the position of the cavity 20, so as to avoid interference of the drain port 321 with other parts at the bottom.

In one embodiment, the cover 31 includes an upper cover 311 and a lower cover 312, the lower cover 312 is in a cavity shape that is open upward and open both forward and backward, the upper cover 311 covers the upper opening of the upper cover 311, the upper cover 311 is in a substantially inverted L shape, and an air inlet channel 313 is formed between the front opening and the rear opening of the lower cover 312.

Referring to fig. 18 and 19 together, the arrows indicate the flowing direction of the steam, and in one embodiment, the microwave oven further includes an exhaust hood 70, and the exhaust hood 70 is disposed on the housing and covers the air outlet 131. The exhaust hood 70 can extend the flow path of the steam, reduce the temperature of the steam, disperse the steam, and prevent the concentrated discharge of the steam from scalding the user. Specifically, the exhaust hood 70 is detachably connected to the housing, and for example, the exhaust hood 70 is fixed to the housing by screws, snaps, or the like. The exhaust hood 70 is provided with a plurality of exhaust passages 72, and the plurality of exhaust passages 72 are all provided up through the exhaust hood 70, and the plurality of exhaust passages 72 are all communicated with the air outlet 131 on the casing, thereby dispersedly discharging the steam.

Referring to fig. 20 in conjunction, the arrows in fig. 20 refer to the flow direction of the steam. In an embodiment, the exhaust hood 70 has a flow guiding cavity 71 and a plurality of exhaust passages 72, the flow guiding cavity 71 has a first cavity wall 73 and a second cavity wall 74 that are disposed opposite to each other and extend in the vertical direction, the first cavity wall 73 is provided with an opening 731 to communicate with the air outlet 131, the top surface of the second cavity wall 74 is spaced from the top surface of the exhaust hood 70 to form an exhaust gap 741, the exhaust gap 741 is vertically staggered from the opening 731, the exhaust gap 741 is located above the opening 731, and the exhaust gap 741 communicates with the plurality of exhaust passages 72. Specifically, the steam exhausted from the air outlet 131 of the housing flows into the diversion cavity 71 through the opening 731 of the exhaust hood 70 and impinges on the second cavity wall 74, the second cavity wall 74 performs a diversion function, and the steam flows upwards along the second cavity wall 74, then flows into the plurality of exhaust channels 72 from the gap between the second cavity wall 74 and the top surface of the exhaust hood 70, and finally is exhausted from the plurality of exhaust channels 72. In this embodiment, after the steam impacts the second chamber wall 74, the flow direction and the flow speed of the steam are changed, and the steam is scattered by the second chamber wall 74, so that the steam is prevented from directly flowing forward after entering the exhaust hood 70 and being intensively discharged from the exhaust passage 72 closest to the exhaust hood, and meanwhile, the steam is greatly reduced from sinking and flowing out from the fit gap between the exhaust hood 70 and the rear shell.

Referring to fig. 21, in an embodiment, a stopper 80 is disposed in the exhaust hood 70, the stopper 80 includes a base plate 81 and a baffle 82, the base plate 81 is fixed to a bottom surface of the exhaust hood 70, and the baffle 82 is connected to the base plate 81 and forms the second chamber wall 74. Specifically, a step is arranged on the housing, the exhaust hood 70 is fixed on the step, a mounting opening is arranged on the bottom surface of the exhaust hood 70, the stop member 80 is installed into the diversion cavity 71 from the mounting opening, and the stop member 80 and the exhaust hood 70 are detachably connected, for example, fixed by screws. In this embodiment, the second chamber walls 74 can be formed by providing the stoppers 80 in the exhaust hood 70 to form the second chamber walls 74.

In one embodiment, a water collecting groove 811 is disposed on the top surface of the substrate 81, and the baffle 82 is disposed in the water collecting groove 811. After the steam impacts on the baffle 82, the baffle 82 has a certain condensation effect on the steam, and partial condensed water can be generated, so that after the water collecting groove 811 is arranged, the condensed water can flow downwards into the water collecting groove 811 along the baffle 82, and the condensed water is prevented from flowing downwards along the shell. In addition, the steam carried by the steam can flow down the baffle 82.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A microwave oven, comprising:

a housing provided with an air outlet;

the air inlet cover is arranged between the cavity and the shell and is provided with an air inlet channel communicated with the air outlet and a water outlet communicated with the air inlet channel;

the water receiving piece is arranged below the air inlet cover and is communicated with the water outlet so as to receive condensed water in the air inlet channel; and the number of the first and second groups,

the exhaust hood is arranged on the shell and covers the air outlet; the exhaust hood is provided with a flow guide cavity and a plurality of exhaust channels, the flow guide cavity is provided with a first cavity wall and a second cavity wall which are oppositely arranged and extend along the vertical direction, the first cavity wall is provided with an opening and communicated with the air outlet, the top surface of the second cavity wall is spaced from the top surface of the exhaust hood to form an exhaust gap, and the exhaust gap is positioned above the opening and communicated with the plurality of exhaust channels.

2. The microwave oven as claimed in claim 1, wherein the housing includes a bottom plate assembly located at a bottom surface of the cavity, the water receiving member includes a first water receiving box and a drain pipe, the first water receiving box is disposed at the bottom plate assembly, one end of the drain pipe is connected to the drain opening, and the other end of the drain pipe is communicated with the first water receiving box.

3. The microwave oven as claimed in claim 2, wherein a first water receiving tank is provided on the bottom plate assembly, a drain hole is provided at a bottom of the first water receiving tank, the first water receiving box is located right below the drain hole, and the drain pipe is communicated with the first water receiving tank.

4. The microwave oven as claimed in claim 3, wherein a tubular joint is provided on the base plate assembly, an inner hole of the tubular joint forms a part of the first water receiving tank, and the drain pipe is fitted over the tubular joint.

5. The microwave oven as claimed in claim 2, further comprising a hot air assembly fixed to an outer side of the cavity, wherein a second water receiving groove is formed in the bottom plate assembly, and the second water receiving groove is disposed opposite to a lower portion of a junction between the hot air assembly and the cavity and is communicated with the first water receiving box.

6. The microwave oven of claim 2, wherein the housing further comprises an oven door assembly, the first water receiving box is located at a lower end of the oven door assembly, and the first water receiving box has an opening facing upward to receive condensed water dripping from the oven door assembly.

7. The microwave oven as claimed in claim 6, further comprising a water tank and an evaporator connected to each other, wherein the water tank and the first water receiving box are arranged along an extending direction of the lower end of the door assembly, a water guide groove is formed on a top surface of the water tank, the water guide groove is used for receiving condensed water dropping from the door assembly, and a water guide hole is formed on a bottom of the water guide groove and communicated with the first water receiving box.

8. The microwave oven as claimed in claim 7, wherein a surface of the water tank facing away from the first water receiving box is provided with a second water receiving box at a lower end of the door assembly to receive condensed water dropped from the door assembly.

9. The microwave oven according to claim 1, wherein the inlet hood includes a hood body and a box body, the hood body is provided with the inlet passage, the bottom surface of the hood body is provided with a communication opening, the box body is in a cavity shape with an upward opening and is fixed to the bottom surface of the hood body, the bottom surface of the box body is provided with the outlet opening, and the communication opening is located in the box body.

10. The microwave oven as claimed in any one of claims 1 to 9, wherein a stopper is provided in the hood, the stopper comprising a base plate fixed to a bottom surface of the hood and a baffle plate connected to the base plate and constituting the second chamber wall.

11. The microwave oven as claimed in claim 10, wherein the top surface of the base plate is provided with a water collecting groove, and the baffle is disposed in the water collecting groove.