CN115299768A

CN115299768A - Steaming and baking oven

Info

Publication number: CN115299768A
Application number: CN202210945051.6A
Authority: CN
Inventors: 张成勇; 林郁超
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-11-08
Anticipated expiration: 2042-08-08
Also published as: CN115299768B

Abstract

The invention provides a steaming and baking oven, which comprises a drainage structure, wherein the drainage structure comprises: a water discharge joint; the drainage joint is provided with a circulation channel penetrating through the drainage joint so that the circulation channel is provided with a liquid inlet port communicated with the baking cavity and a liquid outlet port communicated with the outside of the baking cavity; the drainage core is provided with a drainage hole penetrating through the drainage core, and the flow section of the drainage hole is smaller than that of the flow channel; the drain core is movably arranged to have a first drain state and a second drain state; when the drainage core is in a first drainage state, the drainage core is shielded at the circulation channel, and two ports of the drainage hole are respectively communicated with the baking cavity and the liquid outlet port of the circulation channel; when the drainage core is in the second drainage state, the drainage core is far away from the circulation channel so as to enable the liquid inlet port of the circulation channel to be communicated with the baking cavity. The utility model provides a drainage structures can enough avoid roast intracavity ponding, can avoid again to evaporate the problem that the interior steam loss of during operation roast intracavity.

Description

Steaming and baking oven

Technical Field

The invention relates to the technical field of steam ovens, in particular to a steam oven.

Background

Steam oven can produce steam at the during operation, and steam meets cold can condense ponding in roast intracavity portion, and roast intracavity bottom position generally is equipped with the wash port, and the outlet size is got rid of to the inside water that condenses of oven has direct influence, and too big drainage that does benefit to is nevertheless steam easily run off, and undersize drain port department forms the water film easily, easily causes the drainage unsmooth, roast intracavity ponding.

Therefore, the existing steaming and baking oven has the problems that the drainage effect and the steam loss are difficult to be well considered.

Disclosure of Invention

The invention mainly aims to provide a steaming and baking oven, which solves the problem that the steaming and baking oven in the prior art cannot well take account of the drainage effect and avoid steam loss.

In order to achieve the above object, the present invention provides a steam oven including a drainage structure, the drainage structure including: the water drainage connector is used for being arranged at a water drainage opening of the steaming and baking oven communicated with the baking cavity; the drainage joint is provided with a circulation channel penetrating through the drainage joint so that the circulation channel is provided with a liquid inlet port communicated with the baking cavity and a liquid outlet port communicated with the outside of the baking cavity; the drainage core is provided with a drainage hole penetrating through the drainage core, and the flow section of the drainage hole is smaller than that of the flow channel; the drain core is movably arranged to have a first drain state and a second drain state; when the drainage core is in a first drainage state, the drainage core is shielded at the circulation channel, and two ports of the drainage hole are respectively communicated with the baking cavity and the liquid outlet port of the circulation channel; when the drainage core is in the second drainage state, the drainage core is far away from the circulation channel, so that the liquid inlet port of the circulation channel is communicated with the baking cavity.

Further, the drain core is movably disposed along an extending direction of the flow passage to be changed between a first drain state and a second drain state; and/or when the drainage core is in a first drainage state, at least part of the drainage core is positioned in the circulation channel, and the peripheral wall of the drainage core is in contact with the inner wall of the circulation channel; and/or when the drainage core is in the second drainage state, the drainage core is positioned outside the circulation channel and in the baking cavity.

Further, the drainage structure further includes: the first end of the connecting rod is fixedly connected with the drainage core, the connecting rod penetrates through the circulation channel, and the outer peripheral wall of the connecting rod and the inner wall of the circulation channel are arranged at intervals; the second end of the connecting rod is provided with a stopping part which is positioned at the outer side of the flow channel; when the drainage core is in a first drainage state, the stopping part and the drainage joint are arranged at intervals; when the drainage core is in a second drainage state, the stopping part is abutted against the drainage joint, and the cross section of the body part of the stopping part, which is opposite to the liquid outlet port of the circulation channel, is smaller than the circulation section of the liquid outlet port of the circulation channel.

Furthermore, a positioning groove is formed in the inner wall of the circulation channel, a protruding portion is formed in the outer peripheral wall of the drainage core, and at least part of the protruding portion is made of flexible materials; the drainage structure further includes: the elastic expansion piece is arranged in an expansion manner along the extension direction of the circulation channel, and the first end of the elastic expansion piece is fixedly connected with one side of the drainage core, which is far away from the baking cavity; the second end of the elastic expansion piece is fixedly connected with the inner wall of the flow channel; when the drainage core is in a first drainage state, the elastic expansion piece is in a compressed state or a free state, and the convex part is clamped in the positioning groove; after the bulge is removed from the positioning groove, the drainage core moves to be converted from the first drainage state to the second drainage state under the elastic acting force of the elastic expansion piece.

Furthermore, the elastic expansion piece is provided with a through hole for water flow to pass through; or the cross section of the elastic expansion element perpendicular to the extension direction of the flow channel is smaller than the cross section of the flow channel perpendicular to the extension direction thereof.

Furthermore, the bulge part is made of rubber; or be provided with the mounting groove on the periphery wall of drainage core, drainage structures still includes the rubber spare, and the rubber spare setting is in the mounting groove, and the part body of rubber spare stretches out outside the mounting groove to form the bellying.

Furthermore, the flow channel comprises a first channel section and a second channel section which are distributed along the extension direction of the flow channel and are mutually communicated, the first channel section is positioned on one side of the second channel section, which is close to the baking cavity, and the cross section of the first channel section is larger than that of the second channel section so as to form a step structure on the inner wall of the flow channel; the drainage core and the elastic telescopic piece are both arranged in the first channel section, and the second end of the elastic telescopic piece is fixedly connected with the step surface of the step structure.

Furthermore, the circulation channel also comprises a transition channel section arranged between the first channel section and the second channel section, and the transition channel section is communicated with the first channel section and the second channel section; the cross-section of the transition channel section decreases gradually in the direction from the first channel section to the second channel section.

Furthermore, a plurality of drainage holes distributed at intervals are arranged on the drainage core, and the sum of the areas of the flow cross sections of the drainage holes is smaller than the area of the flow cross section of the flow channel.

Furthermore, the circulation channel extends along the vertical direction, and the steaming and baking box further comprises a water receiving tray which is positioned below the liquid outlet port of the circulation channel.

By applying the technical scheme of the invention, the steaming and baking oven comprises a drainage structure, wherein the drainage structure comprises a drainage connector and a drainage core, and the drainage connector is arranged at a drainage opening of the steaming and baking oven, which is communicated with the baking cavity; the drainage joint is provided with a circulation channel penetrating through the drainage joint so that the circulation channel is provided with a liquid inlet port communicated with the baking cavity and a liquid outlet port communicated with the outside of the baking cavity; the drainage core is provided with a drainage hole penetrating through the drainage core, and the flow section of the drainage hole is smaller than that of the flow passage, namely the flow section area of the drainage hole is smaller than that of the flow passage; the drain core is movably disposed to have a first drain state and a second drain state.

When the drainage core is in the first drainage state, the drainage core is shielded at the circulation channel, and two ports of the drainage hole are respectively communicated with the liquid outlet ports of the baking cavity and the circulation channel, so that condensed water in the baking cavity firstly passes through the drainage hole and then is drained from the liquid outlet port of the circulation channel. When the drainage core is in the second drainage state, the drainage core is far away from the circulation channel so as to enable the liquid inlet port of the circulation channel to be directly communicated with the baking cavity, and further enable condensed water in the baking cavity to directly enter the circulation channel from the liquid inlet port of the circulation channel and to be discharged from the liquid outlet port of the circulation channel. Because the flow cross section of the drain hole is smaller than that of the flow channel, when the drain core is in the second drainage state, the drainage of condensed water in the oven cavity can be accelerated.

In the specific implementation process, when the steaming oven carries out steaming work, the drainage core is in a first drainage state, and condensed water formed after steam in the baking cavity is condensed is drained from the liquid outlet port of the circulation channel after passing through the drainage hole; meanwhile, the flow cross section of the drain hole is smaller, so that the steam loss can be prevented when the steaming oven carries out steaming work. After the steaming work of steaming oven, in order to make the condensation ponding of roast intracavity arrange completely fast, make the drainage core be in second drainage state, because the circulation cross-section of circulation passageway is greater than the circulation cross-section of wash port, the condensation ponding of roast intracavity at this time is direct to be discharged through the circulation passageway to the discharge of the condensation ponding in the roast intracavity with higher speed. It is thus clear that the drainage structures of this application can realize freely switching of drainage core between first drainage state and second drainage state, can enough guarantee the drainage effect of steaming and baking oven, avoids roast intracavity ponding, can avoid again to evaporate the problem that the roast intracavity steam of system during operation lost, has solved the problem that steaming and baking oven among the prior art is difficult to compromise drainage effect better and avoids steam to run off.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an exploded view illustrating a drainage structure of a steaming and baking oven according to the present invention;

fig. 2 is a schematic view illustrating a drain core of a drain structure of a steaming oven according to the present invention in a first drain state;

FIG. 3 is a schematic view illustrating a drain core of a drain structure of a steaming and oven according to the present invention in a second drain state;

fig. 4 shows a schematic structural view of a steaming oven according to the present invention.

Wherein the figures include the following reference numerals:

100. a drainage structure; 10. a water discharge joint; 11. a flow-through channel; 111. a liquid inlet port; 112. a liquid outlet port; 114. positioning a groove; 115. a first channel segment; 116. a second channel segment; 117. a transition channel section; 12. a step structure; 20. a drainage core; 21. a drain hole; 22. mounting grooves; 23. a rubber member; 30. a connecting rod; 31. a stopper portion; 40. an elastic extensible member;

200. steaming and baking the oven; 210. a water pan; 220. and (6) baking the cavity.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The invention provides a steaming and baking oven, which comprises a drainage structure 100, and referring to fig. 1 to 4, the drainage structure 100 comprises a drainage joint 10 and a drainage core 20, wherein the drainage joint 10 is used for being arranged at a drainage opening of a steaming and baking oven 200 which is communicated with a baking cavity 220; the water discharge joint 10 has a flow channel 11 penetrating the water discharge joint 10 such that the flow channel 11 has a liquid inlet port 111 for communicating with the toasting cavity 220 and a liquid outlet port 112 for communicating with the outside of the toasting cavity 220; the drain core 20 has a drain hole 21 penetrating the drain core 20, and the flow cross section of the drain hole 21 is smaller than that of the flow channel 11, that is, the flow cross section area of the drain hole 21 is smaller than that of the flow channel 11; the drain core 20 is movably disposed to have a first drain state and a second drain state.

When the drainage core 20 is in the first drainage state, the drainage core 20 is shielded at the circulation channel 11, and two ports of the drainage hole 21 are respectively communicated with the baking cavity 220 and the liquid outlet port 112 of the circulation channel 11, so that the condensed water in the baking cavity 220 firstly passes through the drainage hole 21 and then is discharged from the liquid outlet port 112 of the circulation channel 11. When the drainage core 20 is in the second drainage state, the drainage core 20 is far away from the circulation channel 11, so that the liquid inlet port 111 of the circulation channel 11 is directly communicated with the baking cavity 220, and further, the condensed water in the baking cavity 220 can directly enter the circulation channel 11 from the liquid inlet port 111 of the circulation channel 11 and is discharged from the liquid outlet port 112 thereof. Since the flow cross-section of the water discharge hole 21 is smaller than that of the flow channel 11, the discharge of the condensed water in the toasting cavity 220 can be accelerated when the water discharge core 20 is in the second water discharge state.

The flow cross section of the drain hole 21 is a cross section of the drain hole 21 perpendicular to the extending direction thereof, and the flow cross section of the flow channel 11 is a cross section of the flow channel 11 perpendicular to the extending direction thereof. The drain hole 21 has two ports along the extending direction of the drain hole 21, and the two ports of the drain hole 21 are a first port and a second port, respectively.

In a specific implementation process, when the steaming oven 200 performs steaming, the drainage core 20 is in a first drainage state, and condensed water formed by condensing steam in the baking cavity 220 is drained from the liquid outlet port 112 of the flow channel 11 through the drainage hole 21; meanwhile, the flow cross section of the drain hole 21 is small, so that the steam loss can be prevented when the steaming oven 200 performs steaming work. After the steaming operation of the steaming and baking oven 200 is finished, in order to quickly drain the condensed water in the baking cavity 220, the water draining core 20 is in the second water draining state, because the flow cross section of the flow channel 11 is larger than the flow cross section of the water draining hole 21, the condensed water in the baking cavity 220 is directly drained through the flow channel 11, namely, the condensed water does not need to pass through the water draining hole 21, so as to accelerate the drainage of the condensed water in the baking cavity 220. It is thus clear that drainage structure 100 of this application can realize the free switching of drainage core 20 between first drainage state and second drainage state, can enough guarantee to evaporate oven 200's drainage effect, avoids roast intracavity 220 internal ponding, can avoid evaporating the problem that the interior steam of roast intracavity of during operation 220 lost again, has solved the problem that the oven that evaporates among the prior art is difficult to compromise drainage effect betterly and avoids steam to run off.

In addition, the transition of the drain core 20 of the drain structure 100 of the present application between the first drain state and the second drain state is not achieved by the repeated attaching and detaching structure, i.e., the repeated attaching and detaching is not required, so that the transition operation of the drain core 20 of the drain structure 100 between the first drain state and the second drain state is convenient.

Specifically, when the drain core 20 is in the second drain state, the drain core 20 is away from the flow channel 11 and is located in the toasting cavity 220.

Specifically, the drain core 20 has a first end and a second end disposed opposite to each other, a first port of the drain hole 21 extends to the first end face of the drain core 20, and a second port of the drain hole 21 extends to the second end face of the drain core 20. Alternatively, the first and second ends of the drain core 20 are distributed in a direction parallel to or the same as the extending direction of the drain hole 21.

Specifically, the drainage core 20 has a columnar structure, and the drainage core 20 has a first end and a second end which are oppositely arranged along the extending direction of the drainage core 20.

Specifically, the drain connector 10 has a columnar structure, and the drain connector 10 has a first end surface and a second end surface along an extending direction of the drain connector 10, and two ends of the flow channel 11 extend to the first end surface and the second end surface of the drain connector 10, respectively, so as to form the liquid inlet port 111 and the liquid outlet port 112 on the first end surface and the second end surface of the drain connector 10, respectively. Alternatively, the extension direction of the drain connector 10 is the same as the extension direction of the flow channel 11.

In the present embodiment, the drain core 20 is movably disposed in the extending direction of the flow channel 11 to be shifted between the first drain state and the second drain state, which is advantageous to simplify the shifting operation of the drain core 20 between the first drain state and the second drain state.

In this embodiment, when the drainage core 20 is in the first drainage state, the first way of matching the drainage core 20 with the flow channel 11 is: at least part of the drainage core 20 is located in the flow channel 11, the outer peripheral wall of the drainage core 20 is in contact with the inner wall of the flow channel 11 in a fitting manner, so that the second port of the drainage hole 21 is communicated with the liquid outlet port 112 of the flow channel 11, the first port of the drainage hole 21 is directly communicated with the baking cavity 220 or the first port of the drainage hole 21 is communicated with the liquid inlet port 111 of the flow channel 11, and further the first port of the drainage hole 21 is communicated with the baking cavity 220 through the liquid inlet port 111 of the flow channel 11, so that the condensed water in the baking cavity 220 is discharged through the drainage hole 21 and then through the liquid outlet port 112 of the flow channel 11. The outer peripheral wall of the drainage core 20 is in contact with the inner wall of the flow channel 11, so that the condensed water in the baking cavity 220 must pass through the drainage hole 21 and then be discharged through the liquid outlet port 112 of the flow channel 11, and the loss of steam in the baking cavity 220 can be avoided.

Specifically, for the drainage core 20 in the first drainage state, when the plane of the first port of the drainage hole 21 is flush with the plane of the liquid inlet port 111 of the circulation passage 11, or when the plane of the first port of the drainage hole 21 is located outside the plane of the liquid inlet port 111 of the circulation passage 11 (i.e., the plane of the first port of the drainage hole 21 is located in the toasting cavity 220), the first port of the drainage hole 21 is directly communicated with the toasting cavity 220. When the plane of the first port of the drainage hole 21 is located on the side of the plane of the liquid inlet port 111 of the flow channel 11 away from the toasting cavity 220, the first port of the drainage hole 21 is communicated with the liquid inlet port 111 of the flow channel 11, so that the first port of the drainage hole 21 is communicated with the toasting cavity 220 through the liquid inlet port 111 of the flow channel 11.

Specifically, with the drain core 20 in the first drainage state, the extending direction of the drain hole 21 is parallel to or the same as the extending direction of the flow channel 11.

Specifically, with the drain core 20 in the first drainage state, the plane in which the second port of the drainage hole 21 is located inside the plane in which the liquid outlet port 112 of the flow-through passage 11 is located, so that the second port of the drainage hole 21 communicates with the liquid outlet port 112 of the flow-through passage 11.

In this embodiment, when the drainage core 20 is in the first drainage state, the second way of matching the drainage core 20 with the flow channel 11 is: the first port of the water discharge hole 21 is directly communicated with the baking chamber 220, so that the condensed water in the baking chamber 220 enters the water discharge hole 21 through the first port of the water discharge hole 21; the drainage core 20 is further provided with a sleeving hole communicated with the second port of the drainage hole 21, and the drainage core 20 is sleeved on the drainage connector 10 through the sleeving hole so as to communicate the second port of the drainage hole 21 with the liquid inlet port 111 of the circulation channel 11 and further communicate the second port of the drainage hole 21 with the liquid outlet port 112 of the circulation channel 11; the wall of the hole is in contact with the outer peripheral wall of the drainage joint 10, so that the condensed water flowing out from the second port of the drainage hole 21 can only enter the circulation channel 11 and then is discharged from the liquid outlet port 112 of the circulation channel 11, and the loss of steam in the baking cavity 220 is avoided.

In this embodiment, when the drainage core 20 is in the second drainage state, the drainage core 20 is located outside the flow channel 11 and inside the baking cavity 220, the liquid inlet port 111 of the flow channel 11 is communicated with the baking cavity 220, and the condensed water in the baking cavity 220 enters the flow channel 11 through the liquid inlet port 111 of the flow channel 11 and is discharged through the liquid outlet port 112 of the flow channel 11.

Specifically, when the drain core 20 is in the second drainage state, the drain core 20 is disposed apart from the liquid inlet port 111 of the flow channel 11 in the extending direction of the flow channel 11.

In this embodiment, the drainage structure 100 further includes a connecting rod 30, a first end of the connecting rod 30 is fixedly connected to the drainage core 20, the connecting rod 30 is inserted into the flow channel 11, and an outer peripheral wall of the connecting rod 30 is spaced from an inner wall of the flow channel 11 to ensure the flow of the flow channel 11; the second end of the connecting rod 30 is provided with a stop 31, the stop 31 being located outside the flow channel 11. Since the first end of the connecting rod 30 is fixedly connected to the drain core 20, the stopping portion 31 is necessarily located at the side of the liquid outlet port 112 of the flow channel 11 far away from the liquid inlet port 111, i.e. the stopping portion 31 is necessarily located outside the baking cavity 220.

Specifically, since the connecting rod 30 is inserted into the flow channel 11, the extending direction of the connecting rod 30 is parallel to or the same as the extending direction of the flow channel 11; when the drain core 20 moves to transit between the first drain state and the second drain state, the link 30 and the stopper 31 are moved.

Specifically, for the drain core 20 in the first drainage state, the first end of the connecting rod 30 is fixedly connected to the side of the drain core 20 away from the toasting cavity 220.

Specifically, when the drain core 20 is in the first drain state, the stopper portion 31 is spaced from the drain joint 10 along the extending direction of the connecting rod 30, that is, the stopper portion 31 is spaced from the end surface of the flow-through channel 11 where the liquid outlet port 112 is located. When the drainage core 20 is in the second drainage state, the stopping portion 31 abuts against the drainage joint 10, that is, the stopping portion 31 abuts against the end surface where the liquid outlet port 112 of the flow channel 11 is located; the cross section of the body part of the stopping portion 31 opposite to the liquid outlet 112 of the flow channel 11 is smaller than the flow section of the liquid outlet 112 of the flow channel 11, so that the liquid outlet 112 of the flow channel 11 is not completely blocked, and the flow of the liquid outlet 112 of the flow channel 11 is ensured. The cross section of the body part of the stopper 31 opposite to the liquid outlet 112 of the flow channel 11 is: a cross section of the body portion of the stopper portion 31 opposite to the liquid outlet port 112 of the flow channel 11, which is perpendicular to the extending direction of the flow channel 11; the flow cross section of the liquid outlet port 112 of the flow channel 11 refers to the cross section of the liquid outlet port 112 of the flow channel 11 perpendicular to the extension direction of the flow channel 11. The stopper portion 31 is provided to limit the movement of the drain core 20 to a certain extent so as to prevent the drain core 20 from being excessively far away from the flow channel 11; and when the drainage core 20 is in the second drainage state, the stopping portion 31 can play a certain positioning effect on the drainage core 20.

Alternatively, the stopper 31 is a rod-shaped structure, and the axial direction of the stopper 31 is perpendicular to the axial direction of the connecting rod 30.

Optionally, the first end of the connecting rod 30 is threadedly coupled to the drain core 20. Further, the first end of the connecting rod 30 is provided with an external thread, the drainage core 20 is provided with an internal thread hole, and the first end of the connecting rod 30 penetrates through the internal thread hole of the drainage core 20, so that the first end of the connecting rod 30 is in threaded connection with the drainage core 20.

In this embodiment, in the case that the drainage core 20 and the flow channel 11 adopt the first matching manner when the drainage core 20 is in the first drainage state, the inner wall of the flow channel 11 is provided with the positioning groove 114, the outer peripheral wall of the drainage core 20 is provided with the protrusion, and at least part of the protrusion is made of a flexible material; the drainage structure 100 further comprises an elastic expansion piece 40, the elastic expansion piece 40 is arranged in an expansion manner along the extension direction of the circulation channel 11, and a first end of the elastic expansion piece 40 is fixedly connected with one side of the drainage core 20 away from the baking cavity 220; the second end of the elastic expansion piece 40 is fixedly connected with the inner wall of the flow channel 11; when the drainage core 20 is in the first drainage state, the elastic expansion piece 40 is in a compressed state or a free state, and the protruding part is clamped in the positioning groove 114; when the projection is removed from the positioning groove 114, the drain core 20 moves to change from the first drain state to the second drain state under the elastic force of the elastic expansion member 40. The cooperation of the protruding portion and the positioning groove 114 can provide a positioning effect for the drain core 20 in the first draining state.

In the specific implementation process, when the drainage core 20 is in the first drainage state, the drainage core 20 is positioned in the first drainage state by clamping the protrusion part in the positioning groove 114. By pressing the drainage core 20 in the first drainage state, the drainage core 20 moves towards the direction close to the elastic expansion piece 40, so that the elastic expansion piece 40 is compressed or further compressed, and the protrusion moves out of the positioning groove 114, so that under the elastic acting force of the elastic expansion piece 40, the drainage core 20 moves to be changed from the first drainage state to the second drainage state. The drain core 20 in the second drainage state is moved into the flow channel 11 and the drain core 20 is pressed so that the protrusion is engaged with the positioning groove 114, and at this time, the pressing force on the drain core 20 is smaller than the pressing force for moving the protrusion out of the positioning groove 114. At least part of the protruding portion is made of a flexible material, so that the protruding portion can slide out of the positioning groove 114 or slide into the positioning groove 114.

Specifically, the elastic expansion member 40 has a flow hole through which water flows; optionally, the resilient telescoping member 40 is a spring. Alternatively, the cross section of the elastic expansion element 40 perpendicular to the extension direction of the flow channel 11 is smaller than the cross section of the flow channel 11 perpendicular to the extension direction of the flow channel 11 to ensure the flow-through of the flow channel 11.

Specifically, the positioning groove 114 and the protrusion are both annular structures extending in the circumferential direction of the flow channel 11, that is, the protrusion is an annular structure extending in the circumferential direction of the drain core 20.

In this embodiment, the protruding portion is made of rubber; or the peripheral wall of the drainage core 20 is provided with a mounting groove 22, the drainage structure 100 further comprises a rubber member 23, the rubber member 23 is arranged in the mounting groove 22, part of the body of the rubber member 23 extends out of the mounting groove 22, and part of the body of the rubber member 23 extending out of the mounting groove 22 forms a protruding part.

Specifically, the mounting groove 22 and the rubber member 23 are both annular structures extending along the circumferential direction of the flow channel 11; namely, the mounting groove 22 and the rubber member 23 are each of a ring-shaped structure extending in the circumferential direction of the drain core 20. Optionally, the rubber member 23 is an expanded rubber ring.

In this embodiment, the circulation channel 11 comprises a first channel segment 115 and a second channel segment 116 distributed along the extending direction thereof and communicated with each other, the first channel segment 115 is located at one side of the second channel segment 116 close to the toasting cavity 220, i.e. the port of the end of the first channel segment 115 far from the second channel segment 116 forms the liquid inlet port 111 of the circulation channel 11, and the port of the end of the second channel segment 116 far from the first channel segment 115 forms the liquid outlet port 112 of the circulation channel 11; the cross section of the first channel section 115 is larger than that of the second channel section 116 to form a stepped structure 12 on the inner wall of the flow channel 11; the cross section of the first channel segment 115 is a cross section of the first channel segment 115 perpendicular to the extending direction of the flow channel 11, and the cross section of the second channel segment 116 is a cross section of the second channel segment 116 perpendicular to the extending direction of the flow channel 11.

Specifically, the drain core 20 and the elastic expansion member 40 are both disposed in the first passage section 115, and the second end of the elastic expansion member 40 is fixedly connected with the step surface of the stepped structure 12. By forming the step structure 12, when the drainage core 20 is pressed, the step surface of the step structure 12 can better support the elastic expansion piece 40, so that the elastic expansion piece 40 is prevented from transversely deviating in the compression process, and the elastic acting force effect of the elastic expansion piece 40 is further ensured. Preferably, the elastic expansion member 40 is a spring, and the outer circumferential wall of the spring is in contact with the inner wall of the first channel section 115 or the outer circumferential wall of the spring is in clearance fit with the inner wall of the first channel section 115.

Specifically, a positioning groove 114 is provided on an inner wall of the first channel segment 115.

In this embodiment, the flow channel 11 further comprises a transition channel section 117 arranged between the first channel section 115 and the second channel section 116, the transition channel section 117 communicating with both the first channel section 115 and the second channel section 116; that is, the flow channel 11 includes a first channel section 115, a transition channel section 117, and a second channel section 116 connected in series. The transition channel section 117 gradually decreases in cross-section in the direction from the first channel section 115 to the second channel section 116 to facilitate the flow of water in the first channel section 115 towards the second channel section 116.

Specifically, the transition channel section 117 is a conical structure.

In the present embodiment, the drainage core 20 is provided with a plurality of drainage holes 21 distributed at intervals, and the sum of the areas of the flow cross sections of the plurality of drainage holes 21 is smaller than the area of the flow cross section of the flow channel 11.

In this embodiment, the flow channel 11 of the drainage structure 100 extends in a vertical direction, and the steaming and baking box 200 further includes a water receiving tray 210, where the water receiving tray 210 is located below the liquid outlet port 112 of the flow channel 11 to receive condensed water flowing out from the liquid outlet port 112 of the flow channel 11.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

according to the steam oven 200 provided by the invention, when the steam oven 200 performs steaming work, the drainage core 20 is in the first drainage state, and condensed water formed by condensing steam in the baking cavity 220 is drained from the liquid outlet port 112 of the flow channel 11 to the water receiving tray 210 through the drainage hole 21; meanwhile, the cross-sectional area of the drain hole 21 perpendicular to the extending direction thereof is small, so that the steam loss can be prevented when the steaming oven 200 performs steaming work. After the steaming operation of the steaming and baking oven 200 is finished, in order to quickly drain the condensed water in the baking cavity 220, the water draining core 20 is in the second water draining state, because the flow cross-sectional area of the flow channel 11 is larger than the sum of the flow cross-sectional areas of all the water draining holes 21, the condensed water in the baking cavity 220 is directly drained to the water receiving tray 210 through the flow channel 11, so as to accelerate the drainage of the condensed water in the baking cavity 220.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms such as "above … …", "above … …", "above … … upper surface", "above", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A steaming and baking oven comprising a drainage structure, wherein the drainage structure comprises:

the water drainage connector (10), the water drainage connector (10) is used for being installed at a water drainage opening of the steaming oven, which is communicated with the baking cavity (220); the drainage joint (10) is provided with a circulation channel (11) penetrating through the drainage joint (10), so that the circulation channel (11) is provided with a liquid inlet port (111) communicated with the baking cavity (220) and a liquid outlet port (112) communicated with the outside of the baking cavity (220);

a drainage core (20), the drainage core (20) having a drainage hole (21) penetrating through the drainage core (20), the drainage hole (21) having a smaller flow cross section than the flow cross section of the flow channel (11); the drain core (20) is movably disposed to have a first drain state and a second drain state;

when the drainage core (20) is in the first drainage state, the drainage core (20) is shielded at the circulation channel (11), and two ports of the drainage hole (21) are respectively communicated with the baking cavity (220) and the liquid outlet port (112) of the circulation channel (11); when the drainage core (20) is in the second drainage state, the drainage core (20) is far away from the circulation channel (11) so as to enable the liquid inlet port (111) of the circulation channel (11) to be communicated with the baking cavity (220).

2. The steaming oven of claim 1,

the drain core (20) is movably disposed along an extending direction of the circulation passage (11) to transit between the first drain state and the second drain state; and/or

When the drainage core (20) is in the first drainage state, at least part of the drainage core (20) is positioned in the circulation channel (11), and the peripheral wall of the drainage core (20) is in fit contact with the inner wall of the circulation channel (11); and/or

When the water discharge core (20) is in the second water discharge state, the water discharge core (20) is positioned outside the circulation passage (11) and inside the toasting cavity (220).

3. The steaming oven of claim 2, wherein the drain structure further comprises:

the first end of the connecting rod (30) is fixedly connected with the drainage core (20), the connecting rod (30) penetrates through the circulation channel (11), and the peripheral wall of the connecting rod (30) and the inner wall of the circulation channel (11) are arranged at intervals; a stopping part (31) is arranged at the second end of the connecting rod (30), and the stopping part (31) is positioned outside the circulating channel (11);

wherein, when the drainage core (20) is in the first drainage state, the stopping part (31) is arranged at a distance from the drainage joint (10); when the drainage core (20) is in the second drainage state, the stopping part (31) is abutted against the drainage joint (10), and the cross section of the body part of the stopping part (31) opposite to the liquid outlet port (112) of the circulating channel (11) is smaller than the circulating cross section of the liquid outlet port (112) of the circulating channel (11).

4. The steaming and baking box as claimed in claim 2, wherein the inner wall of the circulation channel (11) is provided with a positioning groove (114), the outer peripheral wall of the drainage core (20) is provided with a convex part, and at least part of the convex part is made of flexible material; the drainage structure further includes:

the elastic expansion piece (40) is arranged in an expansion manner along the extension direction of the circulation channel (11), and the first end of the elastic expansion piece (40) is fixedly connected with one side, away from the baking cavity (220), of the drainage core (20); the second end of the elastic expansion piece (40) is fixedly connected with the inner wall of the flow channel (11);

when the drainage core (20) is in the first drainage state, the elastic expansion piece (40) is in a compressed state or a free state, and the bulge part is clamped in the positioning groove (114); when the bulge part is removed from the positioning groove (114), under the elastic force of the elastic expansion piece (40), the drainage core (20) moves to be converted from the first drainage state to the second drainage state.

5. The steaming oven of claim 4,

the elastic expansion piece (40) is provided with a through hole for water flow to pass through; or

The cross section of the elastic expansion element (40) perpendicular to the direction of extension of the flow channel (11) is smaller than the cross section of the flow channel (11) perpendicular to the direction of extension thereof.

6. The steaming oven of claim 4,

the convex part is made of rubber; or

Be provided with mounting groove (22) on the periphery wall of drainage core (20), drainage structure still includes rubber spare (23), rubber spare (23) set up in mounting groove (22), the partial body of rubber spare (23) stretches out to outside mounting groove (22), in order to form the bellying.

7. The steaming oven according to claim 4, characterized in that the flow channel (11) comprises a first channel section (115) and a second channel section (116) distributed along its extension and communicating with each other, the first channel section (115) being located at a side of the second channel section (116) close to the baking cavity (220), the first channel section (115) having a larger cross-section than the second channel section (116) to form a step structure (12) on the inner wall of the flow channel (11); the drainage core (20) and the elastic expansion piece (40) are arranged in the first channel section (115), and the second end of the elastic expansion piece (40) is fixedly connected with the step surface of the step structure (12).

8. The steaming oven according to claim 7, wherein the flow-through channel (11) further comprises a transition channel section (117) disposed between the first channel section (115) and the second channel section (116), the transition channel section (117) being in communication with both the first channel section (115) and the second channel section (116); the transition channel section (117) gradually decreases in cross-section in the direction from the first channel section (115) to the second channel section (116).

9. The steaming and baking box as claimed in claim 1, wherein a plurality of the drainage holes (21) are arranged at intervals on the drainage core (20), and the sum of the areas of the flow cross sections of the drainage holes (21) is smaller than the area of the flow cross section of the flow channel (11).

10. The steaming oven according to claim 1, characterized in that the flow channel (11) extends in a vertical direction, the steaming oven further comprising a water pan (210), the water pan (210) being located below the liquid outlet port (112) of the flow channel (11).