CN110693347A

CN110693347A - Steaming and baking oven

Info

Publication number: CN110693347A
Application number: CN201911103847.1A
Authority: CN
Inventors: 贾铌; 王克真; 曹扶升
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-01-17

Abstract

The invention provides a steaming and baking oven which comprises an outer shell and a baking oven door arranged on the outer shell, wherein a heating cavity is arranged in the outer shell, an air return opening is formed in the inner wall of the heating cavity opposite to the baking oven door, the air return opening is communicated with a heating device and an air guide device, a flow passage is arranged between the inner side wall of the heating cavity and the outer shell and is communicated with the heating cavity, a communication part is arranged at the corresponding position of the inner side wall of the flow passage, and the communication area of the communication part in a unit area is gradually increased along the direction towards. And the intercommunication portion is along the intercommunication area crescent in the unit area on the oven door direction of orientation, has increased the heat of keeping away from the heat source position, can effectively reduce the difference in temperature in heating chamber for the temperature is more even, and does not need many times of debugging, and temperature uniformity's reliability is high, and thermal cycle's scope is wider, does not receive the quantity influence of air intake, can flow through more food region of waiting to cook, has solved among the prior art steaming oven inner chamber baking regional difference in temperature big, the inhomogeneous defect of baking.

Description

Steaming and baking oven

Technical Field

The invention relates to the technical field of household appliances, in particular to a steaming and baking oven.

Background

The steam oven becomes a necessary household appliance in many families, and can be used for making foods such as pizza, biscuits, bread, roast chicken and the like, thereby enriching the dining table of people.

A centrifugal fan is arranged in the center of the back wall surface of an inner cavity opposite to an oven door, a circle of heating pipes are arranged around the centrifugal fan, a baffle is arranged on one side of an air inlet of the centrifugal fan, a plurality of strip-shaped gratings or holes are arranged in the center of the baffle and the area close to the air inlet area of the centrifugal fan to serve as an air inlet channel of the centrifugal fan, and a plurality of gaps or holes are arranged around the baffle to serve as an air outlet channel of the centrifugal fan.

Above-mentioned oven is at the course of the work, and local high temperature or the condition of crossing low excessively appear in the cavity easily, and the three-dimensional difference in temperature is big, is unfavorable for the oven temperature even, influences the baking effect.

Disclosure of Invention

Therefore, the invention aims to overcome the defects of large temperature difference and uneven baking of an inner cavity baking area of the steaming oven in the prior art, and provides the steaming oven.

The invention provides a steaming and baking oven which comprises an outer shell and a baking oven door arranged on the outer shell, wherein a heating cavity is arranged in the outer shell, an air return opening is formed in the inner wall of the heating cavity opposite to the baking oven door, the air return opening is communicated with a heating device and an air guide device, a flow passage is arranged between the inner side wall of the heating cavity and the outer shell and is communicated with the heating cavity, a communication part is arranged at the corresponding position of the inner side wall of the flow passage, and the communication area of the communication part is gradually increased along the direction towards the baking oven door in unit area.

The communicating parts are a plurality of openings with the same aperture and are arranged gradually densely along the direction towards the oven door.

A plurality of bar-shaped protrusions are correspondingly arranged on two inner side walls of the heating cavity, the bar-shaped protrusions are parallel to the lower bottom surface of the heating cavity, and a groove body for accommodating a food carrier is arranged.

The plurality of holes comprise at least two hole groups formed by a plurality of single holes distributed in a strip shape, and the hole groups are arranged in parallel with the strip-shaped bulges.

The hole groups are arranged on two sides of the strip-shaped bulge.

The hole group with the minimum distance from the lower bottom surface of the heating cavity is only provided with the holes which are densely arranged at the position close to the door of the steaming and baking oven.

The height interval of the hole groups is 50-70 mm, and the diameter of the open holes is 3-7 mm.

The inner wall of the heating cavity opposite to the oven door is a back baffle plate, a smoke outlet is arranged on the back baffle plate, and a filtering device is arranged at the smoke outlet, is connected with an external fan and is suitable for discharging oil smoke.

The return air inlet comprises two filter screens which are arranged at different heights and have porous structures.

The technical scheme of the invention has the following advantages:

1. the invention provides a steaming and baking oven which comprises an outer shell and a baking oven door arranged on the outer shell, wherein a heating cavity is arranged in the outer shell, an air return opening is formed in the inner wall of the heating cavity opposite to the baking oven door, the air return opening is communicated with a heating device and an air guide device, a flow passage is arranged between the inner side wall of the heating cavity and the outer shell and is communicated with the heating cavity, a communication part is arranged at the corresponding position of the inner side wall of the flow passage, and the communication area of the communication part is gradually increased in a unit area along the direction towards the baking oven door.

The inner side wall of the heating cavity is additionally provided with the flow channel, and the communicating part is arranged between the flow channel and the heating cavity, so that air flow in the steaming oven is heated by the heating device and flows out of the heating cavity into the flow channel under the action of the air return opening, the flow channel is communicated with the heating cavity, hot air flow in the flow channel flows back to the heating cavity from the communicating part on the inner side wall of the heating cavity, and stable thermal circulation is formed.

In addition, because the inside heat source of oven is single, the heat that heating device's oven door direction obtained dorsad is less, the temperature is lower, and intercommunication area crescent in the unit area on the orientation oven door direction is followed to the intercommunication portion, the heat of keeping away from the heat source position has been increased, can effectively reduce the difference in temperature in heating chamber, make the temperature more even, and do not need debugging many times, temperature uniformity's reliability is high, and thermal cycle's scope is wider, do not receive the quantity influence of air intake, can flow through more food region of waiting to cook, it is big to have solved among the prior art steaming oven inner chamber baking regional difference in temperature, the inhomogeneous defect of baking.

2. The steaming and baking box provided by the invention is characterized in that the plurality of openings comprise at least two hole groups formed by a plurality of single openings distributed in a strip shape, and the hole groups are arranged in parallel with the strip-shaped protrusions.

The hole group can lead out hot air flow to the heating cavity, so that the steam oven is heated by similar degrees on the same horizontal height surface, the heating of the steam oven is more balanced, and the baking effect is improved.

3. According to the steam oven provided by the invention, the hole groups are respectively arranged on two sides of the strip-shaped bulge.

Food carrier has been placed to the bellied cell body of bar, and then bellied top of bar and below are for waiting to evaporate the position of roast food, set up like this for the air-out position of punch combination is just waiting to evaporate roast food, and the efficiency of the roast of steaming of improvement effectively reduces the energy consumption, and in addition, will evaporate the circulation that hot gas flow in the oven formed the fixed orbit on the plane of difference, and the annular is through food, makes each part of food by abundant heating, has improved the homogeneity of heating.

4. According to the steam oven provided by the invention, the hole group has the minimum distance with the lower bottom surface of the heating cavity, and only the densely arranged holes are arranged at the positions close to the steam oven door.

Because the density of the hot air is lower, the hot air tends to move upwards, and the temperature of the part nearest to the bottom surface is lower, on one hand, the number of the holes is reduced, and the heat output of the rest holes in the hole group is increased, so that the part of the heating cavity nearest to the bottom surface can keep higher temperature, on the other hand, the movement stroke of the hot air flow output by the opening can be increased, more hot air flow can pass through cooked food, and the heating effect is improved.

5. According to the steam oven provided by the invention, the inner wall of the heating cavity opposite to the oven door is a back baffle plate, a smoke outlet is arranged on the back baffle plate, a filtering device is arranged at the smoke outlet, and the smoke outlet is connected with an external fan and is suitable for discharging oil smoke.

The smoke outlet can effectively filter oil smoke generated by steaming and baking in the heating cavity, quickly pump out and discharge the oil smoke harmful to human bodies, and reduce pollution to purified air.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic internal perspective view of a steaming oven provided in an embodiment of the present invention;

FIG. 2 is a schematic front view of the steamer of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the internal structure of the steaming oven shown in FIG. 1;

FIG. 4 is a schematic top view of the internal structure of the steaming oven of FIG. 1;

FIG. 5 is a schematic layout view of a temperature detecting portion in a heating chamber according to an embodiment of the present invention;

description of reference numerals:

1-an outer shell; 2-heating chamber; 3-back baffle; 31-air return; 21-an inner side wall; 11-a flow channel; 211-group of holes; 212-bar-shaped protrusions; 213-a tank body; 32-smoke outlet.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-5, the present embodiment provides a steaming and baking oven, including an outer casing 1 and an oven door installed on the outer casing 1, a heating cavity 2 is provided inside the outer casing 1, an air return opening 31 is provided on an inner wall of the heating cavity 2 opposite to the oven door, the air return opening 31 is communicated with a heating device and an air guiding device, a flow passage 11 is provided between an inner side wall 21 of the heating cavity 2 and the outer casing 1, the flow passage 11 is communicated with the heating cavity 2, the flow passage 11 is provided with a communicating portion at a corresponding position of the inner side wall 21, and the communicating portion gradually increases a communicating area in a unit area along a.

The interval of prior art medium plate air outlet to return-air inlet 31 is short, local high temperature or the low condition of crossing appears in the cavity easily, the three-dimensional difference in temperature is big, it is even to be unfavorable for oven temperature, influence the baking effect, in addition for balanced temperature, through emulation or experiment, the trompil area and the quantity of controlling back baffle 3, position isoparametric, consume plenty of time and energy, especially when there are a plurality of fans inside the inner chamber, the flow direction of air current is difficult to calculate, the design degree of difficulty of back baffle 3 further improves.

In this embodiment, the flow channel 11 is additionally arranged on the inner side wall 21 of the heating cavity 2, and a communicating part is arranged between the flow channel 11 and the heating cavity 2, so that the air flow in the steaming and baking oven is heated by the heating device and flows out of the heating cavity 2 into the flow channel 11 under the action of the air return opening 31, the flow channel 11 is communicated with the heating cavity 2, the hot air flow in the flow channel 11 flows back into the heating cavity 2 from the communicating part on the inner side wall 21 of the heating cavity 2, and a stable thermal cycle is formed.

In addition, because the inside heat source of oven is single, the heat that heating device's oven door direction obtained dorsad is less, the temperature is lower, and intercommunication area crescent in the unit area on the oven door direction is followed to the intercommunication portion, the heat of keeping away from the heat source position has been increased, can effectively reduce the difference in temperature in heating chamber 2, make the temperature more even, and do not need debugging many times, temperature uniformity's reliability is high, and thermal cycle's scope is wider, do not influenced by the quantity of air intake, can flow through more food region of treating cooking, it is big to have solved among the prior art steaming oven inner chamber baking regional difference in temperature, the inhomogeneous defect of baking.

As an alternative embodiment, the communication portion may be a long hole whose opening gradually increases in a direction toward the toaster door, or a folding hole which can be opened and closed.

In this embodiment, the communicating part is a plurality of apertures with the same aperture, and is arranged gradually densely along the direction towards the oven door. As an alternative embodiment, the openings may be arranged in inclined strips or in a divergent manner on the inner wall of the heating chamber 2.

In this embodiment, the heating cavity 2 is a square space, a plurality of strip-shaped protrusions 212 are correspondingly disposed on two inner side walls 21 of the heating cavity 2, the strip-shaped protrusions 212 are parallel to the lower bottom surface of the heating cavity 2, and a groove 213 for accommodating a food carrier is disposed therein. The food carrier may be a baking tray or a grill, and is fixed to the groove 213 in a snap fit manner, or may be a push-pull structure.

The plurality of open pores comprise at least two pore groups 211 formed by a plurality of single open pores distributed in a strip shape, and the pore groups 211 are arranged in parallel with the strip-shaped bulges 212. The hole group 211 can guide hot air flow into the heating cavity 2, so that the same horizontal height surface in the steaming and baking box is heated by similar degrees, the heating of the steaming and baking box is more balanced, and the baking effect is improved.

The hole groups 211 are respectively provided on both sides of the bar-shaped protrusion 212. Food carriers are placed in the grooves 213 on the strip-shaped protrusions 212, and food to be steamed and baked is placed above and below the strip-shaped protrusions 212, so that the air outlet positions of the hole groups 211 are opposite to the food to be steamed and baked, the steaming and baking efficiency is improved, the energy consumption is effectively reduced, in addition, hot air in the steaming and baking oven forms circular flow with fixed tracks on different planes, and the circular flow passes through the food, so that all parts of the food are fully heated, and the heating uniformity is improved.

In this embodiment, the hole groups 211 are arranged on both sides of the 3 layers of strip-shaped protrusions 212 from 4 groups on one inner side surface of the heating chamber 2.

The group of holes 211 having the smallest distance from the lower bottom surface of the heating chamber 2 has only holes densely arranged near the door of the steaming and baking oven. Because the density of the hot air is lower, the hot air tends to move upwards, and the temperature of the part nearest to the bottom surface is lower, on one hand, the arrangement reduces the number of the open holes and increases the heat output of the rest open holes of the hole group 211, so that the part of the heating cavity 2 nearest to the bottom surface can keep higher temperature, on the other hand, the movement stroke of the hot air flow output by the opening can be increased, more hot air flow can pass through cooked food, and the heating effect is improved.

The hole groups 211 have a height interval of 50-70 mm and an opening diameter of 3-7 mm.

The inner wall of the heating cavity 2 opposite to the oven door is a back baffle plate 3, a smoke outlet 32 is arranged on the back baffle plate, and the smoke outlet 32 is provided with a filtering device and is connected with an external fan and is suitable for discharging oil smoke. The smoke outlet 32 can effectively filter the oil smoke generated by steaming and baking in the heating cavity 2, quickly exhaust the oil smoke harmful to human body and reduce the pollution to purified air. As an alternative embodiment, the exhaust vent 32 may be provided on the inner wall of the other heating chamber 2.

In this embodiment, the air return opening 31 includes two filter screens with porous structures and arranged at different heights.

The lower part is that 27 average temperature data points can be obtained by taking a cross section at three heights of the inner cavity and uniformly dividing the cross section into 9 small blocks through simulation comparison of the structure of the embodiment and the traditional hot air convection structure, and are shown in tables 1 and 2.

TABLE 1 conventional hot air convection temperature distribution

Table 2 convection temperature profile of this example

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. The utility model provides a steaming and baking oven, includes shell body (1) and installs oven door on shell body (1), shell body (1) inside is provided with heating chamber (2), with oven door is relative be provided with return air inlet (31) on heating chamber (2) inner wall, return air inlet (31) and heating device and air ducting intercommunication, its characterized in that, heating chamber (2) inside wall (21) with be equipped with runner (11) between shell body (1), runner (11) with heating chamber (2) intercommunication, runner (11) are in be equipped with the intercommunication portion on the corresponding position of inside wall (21), the intercommunication portion is along the orientation intercommunication area crescent in the unit area on the oven door direction.

2. The steaming oven of claim 1, wherein the communication parts are a plurality of openings with the same diameter and are arranged in a gradually-dense manner along the direction towards the oven door.

3. The steaming oven according to claim 2, wherein a plurality of strip-shaped protrusions (212) are correspondingly arranged on the two inner side walls (21) of the heating cavity (2), the strip-shaped protrusions (212) are arranged in parallel with the lower bottom surface of the heating cavity (2), and a groove body (213) for accommodating a food carrier is arranged.

4. The steaming oven according to claim 3, wherein the plurality of openings comprises at least two hole sets (211) consisting of a plurality of single openings distributed in a bar shape, the hole sets (211) being arranged in parallel with the bar-shaped protrusions (212).

5. The steaming oven according to claim 4, wherein the hole sets (211) are provided at both sides of the bar-shaped protrusion (212).

6. The steaming oven according to claim 5, characterised in that the group of holes (211) having the smallest distance to the lower bottom surface of the heating chamber (2) has the holes arranged densely only near the steaming oven door.

7. The steaming oven according to any one of claims 4 to 6, wherein the hole sets (211) are spaced at 50-70 mm height intervals and the holes have a diameter of 3-7 mm.

8. The steaming oven according to claim 1, characterised in that the inner wall of the heating chamber (2) opposite to the oven door is a back baffle (3) provided with an exhaust port (32), said exhaust port (32) being provided with filtering means and being connected to an external fan adapted to exhaust fumes.

9. The steaming oven according to claim 1, characterized in that the return air opening (31) comprises two filtering nets with a porous structure arranged at different heights.