CN110652226B - Baking appliance - Google Patents

Abstract

The present invention provides a roasting appliance comprising: a housing; the heating chamber is arranged in the shell, an air channel is formed between a plurality of wall surfaces of the heating chamber and the shell, and a plurality of vent holes are formed in at least one wall surface of the plurality of wall surfaces; the heating element and the impeller are both arranged in the air duct, and the impeller is positioned on one side of the heating element; wherein, under the action of heating element and impeller, the gas in the wind channel is heated, and flows into the heating chamber through part of a plurality of ventilation holes. Form the wind channel through designing between a plurality of walls of heating chamber and the casing for by a plurality of walls of heating element heating high-temperature gas can encircle the heating chamber, be favorable to heating through heat transfer and heat radiation edible material in the heating chamber, combine high-temperature gas to blow to eating material to heating chamber inside through partial ventilation hole again and heat, heating efficiency is high, and a plurality of walls of heating chamber are encircleed by high-temperature gas, and it is effectual to keep warm.

Description

Baking appliance

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a baking appliance.

Background

At present, the heating source of the toaster is usually arranged at the whole back of the toaster, so as to avoid the heating source from being positioned on the appearance surface to scald users and the like, and in order to rapidly transmit the gas heated by the heating source to the inside of the heating chamber, the hot air inlet hole is usually arranged on the back plate of the heating chamber, but the whole temperature of the back of the heating chamber is higher, the front temperature is lower, the heating is uneven, and finally the bread cooking effect is poor.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, one aspect of the present invention proposes a roasting appliance.

In view of this, according to one aspect of the present invention there is provided a roasting appliance comprising: a housing; a heating chamber arranged in the housing, wherein an air duct is formed between a plurality of wall surfaces of the heating chamber and the housing, and a plurality of vent holes are arranged on at least one wall surface of the plurality of wall surfaces; the heating element and the impeller are both arranged in the air duct, and the impeller is positioned on one side of the heating element; wherein, under the effect of heating element and impeller, the gas in the wind channel is heated to partly a plurality of ventilation holes inflow heating chamber.

According to the baking appliance provided by the invention, the air channel is formed between the plurality of wall surfaces of the heating chamber and the shell, so that high-temperature gas heated by the heating element can surround the plurality of wall surfaces of the heating chamber, the food in the food containing device arranged in the heating chamber can be heated through heat transfer and heat radiation, and then the high-temperature gas is blown to the inside of the heating chamber through part of the vent holes to heat the food, so that the heating efficiency is high, the cooking time is greatly shortened, the plurality of wall surfaces of the heating chamber are surrounded by the high-temperature gas, the heat distribution is uniform, the food in the food containing device can be heated uniformly, the cooking effect is good, and the heat preservation effect is good. Through set up a plurality of ventilation holes on a plurality of walls in the wind channel that form between the heating chamber and the casing, this a plurality of ventilation holes can be opened and establish on one of them wall, also can open and establish on a plurality of walls, and then be favorable to the high-temperature gas in the wind channel to get into the heating chamber through the ventilation hole on a plurality of walls, get into the heating chamber from different position, make the inside temperature distribution of heating chamber more even, be favorable to eating material thermally equivalent, and high-temperature gas gets into the heating chamber through diversified while, the rate of being heated of inside edible material has also been improved, further shorten and cook for a long time. Through setting up the impeller in one side of heating element for be favorable to under the effect of impeller, guide air current flows through heating element place region, and then the heating element of being convenient for heats the gas temperature in the wind channel fast, improves the programming rate, and then improves the holistic rate of heating of baking utensil. Specifically, when cooking, the heating element heats the air in the air duct, the impeller rotates to blow high-temperature gas in the air duct into the heating chamber through partial ventilation holes, and the gas with the lower relative temperature in the heating chamber flows out of the heating chamber through partial ventilation holes under the action of the impeller, enters the air duct and is heated by the heating element, and then enters the heating chamber again, so that hot air heating circulation is realized, uniform heating of food materials in the food material containing device is facilitated, and the heating effect is good. It should be noted that the heating chamber may be completely independent from the housing, that is, each wall surface of the heating chamber is not the same as each wall surface of the housing; the heating chamber may also be partly co-walled with the housing, i.e. part of the wall of the housing may constitute part of the wall of the heating chamber.

In addition, it is conceivable that a suitable food material containing device may be placed in the heating chamber according to actual needs, for example, when food materials such as bread and the like need to be cooked, a food material containing barrel may be placed in the heating chamber, and when food materials such as biscuits, chicken wings and the like need to be cooked, a food material containing tray or a food material containing support may be placed in the heating chamber, which is not illustrated here.

In addition, according to the baking device in the above technical solution provided by the present invention, the baking device may further have the following additional technical features:

in any one of the above technical solutions, preferably, the plurality of ventilation holes include a plurality of air outlet holes, and the plurality of air outlet holes are disposed on a wall surface of the heating chamber corresponding to the impeller.

In this technical scheme, contain a plurality of exhaust vents in a plurality of ventilation holes, gas flows out the heating chamber through a plurality of exhaust vents, and a plurality of exhaust vents set up on the wall corresponding with the impeller of heating chamber, are favorable to the gas in the heating chamber to flow out the heating chamber fast under the effect of impeller, have improved the inside heated air circulation speed of heating chamber, shorten the duration of cooking. Especially, when the impeller is positioned at one side of the heating element, the gas which is led out of the heating chamber in time can be quickly heated by the heating element, and the heating efficiency of the whole baking appliance is improved. Alternatively, the impeller is provided between the back wall surface of the heating chamber and the casing, or between either of the left and right side wall surfaces of the heating chamber and the casing.

In any one of the above technical solutions, preferably, the plurality of vent holes includes a plurality of air inlet holes, and the plurality of air inlet holes are provided on at least one of the plurality of wall surfaces.

In the technical scheme, a plurality of vent holes comprise a plurality of air inlet holes, and air enters the heating chamber through the plurality of air inlet holes. The plurality of air inlet holes are formed in any one of the plurality of wall surfaces of the heating chamber and the shell to form the air channel, namely the plurality of air inlet holes are uniformly arranged on one wall surface, so that the production and the processing are convenient, the heat loss is reduced, and especially when the wall surface where the plurality of air inlet holes are located corresponds to the heating element, a large amount of high-temperature gas heated by the heating element can directly enter the heating chamber through the plurality of air inlet holes, and cannot flow in the air channel for a certain distance and then enter the heating chamber, so that the heating efficiency is improved. Through setting up a plurality of fresh air inlets on a plurality of walls of heating chamber, form the wind channel between these a plurality of walls all and the casing for high-temperature gas in the wind channel can get into the heating chamber through a plurality of fresh air inlets on a plurality of walls, gets into the heating chamber from different positions, makes the inside temperature distribution of heating chamber more even, is favorable to eating material thermally equivalent, and high-temperature gas gets into the heating chamber through diversified simultaneously, has improved the heated rate of inside edible material, shortens when cooking. Preferably, the number of the air inlet holes is multiple on the wall surface of the heating chamber which forms the air channel with the shell, and the air inlet quantity is ensured to be enough.

In any of the above solutions, preferably, the heating element corresponds to at least one wall surface of the heating chamber.

In the technical scheme, the heating element corresponds to at least one wall surface of the heating chamber, so that the heating element can be arranged between the back wall surface of the heating chamber and the shell, can also be arranged between the side wall surface of the heating chamber and the shell, and the like, and the uneven temperature distribution of each part of the heating chamber caused by the concentrated distribution of the heating element is effectively avoided.

In any of the above technical solutions, preferably, at least two of the plurality of air inlet holes are provided in the remaining wall surfaces except the wall surface corresponding to the heat generating element.

In the technical scheme, among a plurality of fresh air inlets, there are at least two fresh air inlets and set up on the remaining wall of heating chamber except that the wall corresponding with heating element, make the hot gas in the wind channel can get into inside the heating chamber from the fresh air inlet on the wall in addition, the edible material that holds in the bucket to inside edible material heats, can reduce the wall department temperature that heating element corresponds higher and the inside difference in temperature of heating chamber that arouses, make the inside edible material of heating chamber, not only can be heated at the heat transfer and the thermal radiation in heating element place region, can also heat through the hot gas that the fresh air inlet flowed in the region that heating element does not place, the uniformity of being heated of edible material has been improved, improve the culinary art effect.

In any of the above technical solutions, preferably, on the remaining wall surfaces of the heating chamber except the wall surface corresponding to the heating element, an opening area of each of the at least two air inlet holes is larger as being farther from the heating element.

In the technical scheme, on the other wall surfaces of the heating chamber except the wall surface corresponding to the heating element, because the outlet air temperature of the inlet air holes closer to the heating element is higher, and the outlet air temperature of the inlet air holes farther from the heating element is lower, the outlet air area of the inlet air holes with higher outlet air temperature is controlled to be smaller, and the outlet air area of the inlet air holes with lower outlet air temperature is controlled to be larger, the outlet air effect of each inlet air hole can be integrated, the temperature of the area, close to the heating element, in the heating chamber is prevented from being higher due to the same outlet air area of each inlet air hole, and the uniform distribution of the temperature in the heating chamber is favorably ensured.

In any of the above technical solutions, preferably, on the remaining wall surfaces of the heating chamber except the wall surface corresponding to the heating element, the distance between any adjacent two of the at least two air inlet holes is smaller as being farther from the heating element.

In the technical scheme, on the other wall surfaces of the heating chamber except the wall surface corresponding to the heating element, because the outlet air temperature of the air inlet holes which are closer to the heating element is higher, the outlet air temperature of the air inlet holes which are farther from the heating element is lower, and then the distance between two adjacent air inlet holes which are higher in outlet air temperature is larger and the distance between two adjacent air inlet holes which are lower in outlet air temperature is smaller, the outlet air effect of each air inlet hole can be integrated, the temperature of the area, close to the heating element, in the heating chamber is prevented from being higher due to the same distance between the air inlet holes, and the uniform distribution of the temperature in the heating chamber is favorably ensured.

In any of the above technical solutions, preferably, at least two air inlet holes are located at a middle lower portion or a bottom portion of the heating chamber on the remaining wall surfaces of the heating chamber except the wall surface corresponding to the heating element.

In the technical scheme, on the other wall surfaces of the heating chamber except the wall surface corresponding to the heating element, because the hot air density is low, the hot air moves upwards, at least two air inlet holes are arranged at the position below the middle part of the heating chamber or at the bottom of the heating chamber, so that the high-temperature air can greatly rise in the heating chamber after entering the heating chamber through the at least two air inlet holes, the hot air circulation efficiency in the heating chamber is improved, and the heating uniformity in the heating chamber is improved. Conceivably, the plurality of air outlet holes are formed in the bottom of the heating chamber, so that low-temperature air in the heating chamber can flow out of the heating chamber, the temperature in the heating chamber can be quickly increased, and the cooking time can be shortened.

In any of the above technical solutions, preferably, at least one of the plurality of air inlet holes is provided on at least one wall surface of the heating chamber corresponding to the heating element.

In the technical scheme, at least one air inlet hole is formed in the plurality of air inlet holes and is formed in one or more wall surfaces of the heating chamber corresponding to the heating element, and the air inlet holes are formed in the wall surfaces corresponding to the heating element, so that a large amount of high-temperature gas heated by the heating element can directly enter the heating chamber through the air inlet hole in the wall surface closest to the heating element, the high-temperature gas can timely and quickly enter the heating chamber, and the heating rate is improved. Preferably, the heating element is arranged between the back wall surface of the heating chamber and the shell, and the back wall surface is provided with at least one air inlet hole; or the heating element is arranged between the back wall surface and the shell of the heating chamber and between one side wall surface and the shell, at least one air inlet hole is arranged on the back wall surface, or a plurality of air inlet holes are respectively arranged on the back wall surface and the side wall surface.

It is conceivable that, when there are a plurality of air inlet holes on at least one wall surface of the heating chamber corresponding to the heating element, among the plurality of air inlet holes, the opening area of the air inlet hole closer to the heating element is larger, and/or the distance between two adjacent air inlet holes closer to the heating element is larger, and/or the plurality of air inlet holes are provided at a lower middle portion or a bottom portion, i.e., a position below the middle portion, of the at least one wall surface.

In any of the above technical solutions, preferably, an air duct is formed between at least two side wall surfaces of the heating chamber and the housing.

In this technical scheme, further inject and form the wind channel between two at least lateral wall faces of heating chamber and the casing, and then two at least lateral wall faces of heating chamber all can receive high-temperature gas's heating and with heat transfer to the heating chamber in or with heat radiation to the heating chamber, be favorable to the side to heat the edible material that the edible material held in the bucket, improve heating and heat preservation effect.

In any of the above technical solutions, preferably, the roasting appliance further includes: and a front door arranged at the front end of the shell, wherein an air channel is formed between a plurality of side wall surfaces of the heating chamber and the shell.

In the technical scheme, the baking device is also provided with a front door arranged at the front end of the shell, and at the moment, an air duct is formed between a plurality of side wall surfaces of the heating chamber and the shell, so that multidirectional heating around the heating chamber is facilitated. Preferably, an air duct is formed between the back wall surface of the heating chamber and the side wall surface directly connected with the back wall surface and the shell.

In any of the above technical solutions, preferably, the roasting appliance further includes: and the top door is arranged at the top end of the shell, and an air channel is formed between each side wall surface of the heating chamber and the shell.

In this technical scheme, baking device still has the overhead door that sets up at the casing top, and each side wall face of heating chamber can all form the wind channel with the casing between, and then be favorable to encircleing the heating chamber and heat all-roundly in circumference. Of course, it is conceivable that not all of the side wall surfaces may form the air duct with the housing, which is only the most preferable embodiment, and the other embodiments are not listed here.

In any of the above technical solutions, preferably, when the roasting appliance further includes a front door, an inner surface area of the front door is smaller than an area surrounded by an outer contour of a front wall surface of the heating chamber, and an air duct is also formed between the front wall surface of the heating chamber and the housing.

In the technical scheme, when the baking appliance is provided with the front door, the front door is smaller, and the area of the inner surface of the front door is smaller than the area enclosed by the outer contour of the front wall surface of the heating chamber, the air duct can still be arranged between the front wall surface surrounding the front door and the shell, at the moment, the front surface of the heating chamber can be heated through the heat transfer or the heat radiation of high-temperature gas in the air duct, or the high-temperature gas flowing out through the air inlet hole in the front wall surface is used for heating, so that the temperature distribution in the heating chamber is ensured to be more uniform.

In any of the above solutions, preferably, the impeller is a centrifugal impeller.

In the technical scheme, the impeller is a centrifugal impeller, which is beneficial to collecting gas in a centralized way, and the gas is blown to all parts of the air duct in a dispersing way, and the temperature of the gas in the air duct is evenly distributed, so that the temperature inside the heating chamber is evenly distributed.

In any of the above technical solutions, preferably, the heating element is a heating tube, and is disposed around the periphery of the centrifugal impeller.

In this technical solution, the heating element is preferably a heating tube, and certainly can also be a heating wire, an infrared heating element, etc. When the heating element is a heating pipe, the heating pipe is arranged around the centrifugal impeller, so that gas led out by the impeller can be heated uniformly in time, and the problem that the temperature rising speed of the gas in the air duct is low and the overall heating speed of the baking device is influenced due to the fact that part of the gas is leaked is solved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

figure 1 shows a schematic structural view of a baking implement according to an embodiment of the present invention;

FIG. 2 shows a schematic top partial view of the interior of a baking appliance of one embodiment of the present invention;

FIG. 3 shows a schematic partial front view of the interior of a baking implement according to an embodiment of the invention;

figure 4 shows a schematic view of a partial right side of the interior of a baking appliance of an embodiment of the invention;

figure 5 shows a schematic bottom view of a part of the interior of a baking appliance according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 5 is:

12 shells, 14 front doors, 16 heating chambers, 162 air outlet holes, 164 air inlet holes, 18 air ducts, 20 heating elements, 22 impellers and 24 food material containing barrels.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A baking appliance according to some embodiments of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1 to 5, an aspect embodiment of the present invention provides a roasting appliance, including: a housing 12; a heating chamber 16 provided inside the casing 12, an air duct 18 being formed between a plurality of wall surfaces of the heating chamber 16 and the casing 12, and a plurality of vent holes being provided on at least one of the plurality of wall surfaces; the heating element 20 and the impeller 22 are both arranged in the air duct 18, and the impeller 22 is positioned on one side of the heating element 20; wherein, under the action of the heating element 20 and the impeller 22, the air in the air duct 18 is heated and flows into the heating chamber 16 through a part of the plurality of ventilation holes.

According to the baking appliance provided by the invention, the air duct 18 is formed between the plurality of wall surfaces of the heating chamber 16 and the shell 12, so that high-temperature gas heated by the heating element 20 can surround the plurality of wall surfaces of the heating chamber 16, the food in the food containing device arranged in the heating chamber 16 can be heated through heat transfer and heat radiation, and then the high-temperature gas is blown into the heating chamber 16 through part of the ventilation holes to heat the food, so that the heating efficiency is high, the cooking time is greatly shortened, the wall surfaces of the heating chamber 16 are surrounded by the high-temperature gas, the heat distribution is uniform, the food in the food containing barrel 24 can be uniformly heated, the cooking effect is good, and the heat preservation effect is good. Set up a plurality of ventilation holes through form the wind channel 18 between the casing 12 and the heating chamber 16 on a plurality of walls, these a plurality of ventilation holes can be opened and establish on one of them wall, also can be seted up on a plurality of walls, and then be favorable to the high-temperature gas in the wind channel 18 to get into the heating chamber 16 through the ventilation hole on a plurality of walls, get into the heating chamber 16 from different position, make the inside temperature distribution of heating chamber 16 more even, be favorable to eating material thermally equivalent, and high-temperature gas gets into the heating chamber 16 simultaneously through diversified, the rate of heating of inside edible material has also been improved, further shorten cooking duration. By arranging the impeller 22 at one side of the heating element 20, the air flow is guided to flow through the area where the heating element 20 is located under the action of the impeller 22, so that the heating element 20 can heat the air temperature in the air duct 18 quickly, the temperature rising speed is increased, and the heating speed of the whole baking apparatus is increased. Specifically, when cooking, the heating element 20 heats the air in the air duct 18, the impeller 22 rotates to blow high-temperature air in the air duct 18 into the heating chamber 16 through part of the ventilation holes, and the air with lower relative temperature in the heating chamber 16 flows out of the heating chamber 16 through part of the ventilation holes under the action of the impeller 22, enters the air duct 18 and is heated by the heating element 20, and then enters the heating chamber 16 again, so that hot air heating circulation is realized, uniform heating of food materials in the food material containing barrel 24 is facilitated, and the heating effect is good. It should be noted that the heating chamber 16 may be completely independent of the housing 12, i.e., the walls of the heating chamber 16 are not co-extensive with the walls of the housing 12; the heating chamber 16 may also be partly co-walled with the housing 12, i.e. part of the wall of the housing 12 constitutes part of the wall of the heating chamber 16.

It is also conceivable that an appropriate food material accommodating device is placed in the heating chamber 16 as needed, for example, when a food material such as bread is to be cooked, the food material accommodating tub 24 is placed in the heating chamber, and when a food material such as a biscuit or chicken wing is to be cooked, a food material accommodating tray or a food material accommodating rack is placed in the heating chamber 16, which is not illustrated here.

In one embodiment of the present invention, preferably, as shown in fig. 3, the plurality of ventilation holes include a plurality of ventilation holes 162, and the plurality of ventilation holes 162 are provided on a wall surface of the heating chamber 16 corresponding to the impeller 22.

In this embodiment, the plurality of vent holes include a plurality of air outlet holes 162, the air flows out of the heating chamber 16 through the plurality of air outlet holes 162, and the plurality of air outlet holes 162 are disposed on the wall surface of the heating chamber 16 corresponding to the impeller 22, so that the air in the heating chamber 16 can flow out of the heating chamber 16 quickly under the action of the impeller 22, the circulation speed of the hot air in the heating chamber 16 is increased, and the cooking time is shortened. Particularly, when the impeller 22 is located on one side of the heating element 20, the gas which is immediately led out of the heating chamber 16 can be quickly heated by the heating element 20, and the heating efficiency of the entire roasting apparatus is improved. Alternatively, the impeller 22 is provided between the back wall surface of the heating chamber 16 and the casing 12, or between any of the left and right side wall surfaces of the heating chamber 16 and the casing 12.

In one embodiment of the present invention, preferably, as shown in fig. 2 to 4, the plurality of ventilation holes includes a plurality of air inlet holes 164, and the plurality of air inlet holes 164 are provided on at least one of the plurality of walls.

In this embodiment, the plurality of vent holes includes a plurality of air inlet holes 164, and the air enters the interior of the heating chamber 16 through the plurality of air inlet holes 164. The plurality of air inlet holes 164 are arranged on any one of the plurality of wall surfaces of the heating chamber 16 and the shell 12 forming the air duct 18, namely, the plurality of air inlet holes 164 are uniformly arranged on one wall surface, so that the production and the processing are convenient, and the heat loss is reduced, especially when the wall surface where the plurality of air inlet holes 164 are located corresponds to the heating element 20, a large amount of high-temperature gas heated by the heating element 20 can directly enter the heating chamber 16 through the plurality of air inlet holes 164, and cannot enter the heating chamber 16 after flowing for a certain distance in the air duct 18, and the heating efficiency is improved. Through setting up a plurality of inlet openings 164 on a plurality of walls of heating chamber 16, form wind channel 18 between these a plurality of walls all and casing 12, make the hot gas in wind channel 18 can get into heating chamber 16 through a plurality of inlet openings 164 on a plurality of walls, get into heating chamber 16 from different positions, make the inside temperature distribution of heating chamber 16 more even, be favorable to eating material thermally equivalent, and hot gas gets into heating chamber 16 simultaneously through diversified, the rate of heating of inside edible material has been improved, shorten the duration of cooking. Preferably, the number of the air inlet holes 164 is plural on the wall surface of the heating chamber 16 forming the air passage 18 with the housing 12, so as to ensure a sufficient air inlet amount.

In one embodiment of the present invention, it is preferable that the heating element 20 corresponds to at least one wall surface of the heating chamber 16, as shown in fig. 2 to 5.

In this embodiment, the heating element 20 corresponds to at least one wall surface of the heating chamber 16, so that the heating element 20 can be disposed not only between the back wall surface of the heating chamber 16 and the casing 12, but also between the side wall surface of the heating chamber 16 and the casing 12, and the like, thereby effectively avoiding uneven temperature distribution in each part of the heating chamber 16 due to the concentrated distribution of the heating element 20.

In one embodiment of the present invention, preferably, as shown in fig. 2 and 4, at least two air inlet holes 164 among the plurality of air inlet holes 164 are provided on the remaining wall surfaces except the wall surface corresponding to the heating element 20.

In this embodiment, at least two air inlet holes 164 are formed in the plurality of air inlet holes 164, and are disposed on the remaining wall surface of the heating chamber 16 except the wall surface corresponding to the heating element 20, so that the high-temperature air in the air duct 18 can enter the heating chamber 16 through the air inlet holes 164 on the other wall surface, and heat the food in the internal food containing barrel 24, and the temperature difference inside the heating chamber 16 caused by the higher temperature at the wall surface corresponding to the heating element 20 can be reduced, so that the food in the heating chamber 16 can be heated not only by heat transfer and heat radiation in the area where the heating element 20 is located, but also by the high-temperature air flowing in through the air inlet holes 164 in the area where the heating element 20 is not located, and therefore, the uniformity of heating the food can be improved, and the cooking effect can be improved.

In one embodiment of the present invention, it is preferable that, as shown in fig. 4, on the remaining wall surfaces of the heating chamber 16 except the wall surface corresponding to the heating element 20, the opening area of each of the at least two air inlet holes 164 is larger as being farther from the heating element 20.

In this embodiment, on the remaining wall surfaces of the heating chamber 16 except the wall surface corresponding to the heating element 20, since the outlet air temperature of the air inlet holes 164 closer to the heating element 20 is higher, and the outlet air temperature of the air inlet holes 164 farther from the heating element 20 is lower, further by controlling that the outlet air area of the air inlet holes 164 with higher outlet air temperature is smaller, and the outlet air area of the air inlet holes 164 with lower outlet air temperature is larger, the outlet air effect of each air inlet hole 164 can be integrated, the temperature of the region inside the heating chamber 16 close to the heating element 20 due to the same outlet air area of each air inlet hole 164 is prevented from being higher, which is beneficial to ensuring the uniform temperature distribution inside the heating chamber 16.

In one embodiment of the present invention, it is preferable that, as shown in fig. 4, on the remaining wall surfaces of the heating chamber 16 except the wall surface corresponding to the heating element 20, the interval between any adjacent two of the at least two air inlet holes 164 is smaller as being farther from the heating element 20.

In this embodiment, on the remaining wall surfaces of the heating chamber 16 except the wall surface corresponding to the heating element 20, since the outlet air temperature of the air inlet holes 164 closer to the heating element 20 is higher, and the outlet air temperature of the air inlet holes 164 farther from the heating element 20 is lower, further by controlling the distance between two adjacent air inlet holes 164 with higher outlet air temperature to be larger, and the distance between two adjacent air inlet holes 164 with lower outlet air temperature to be smaller, the outlet air effect of each air inlet hole 164 can be synthesized, the temperature of the region inside the heating chamber 16 close to the heating element 20 due to the same distance between the air inlet holes 164 is prevented from being higher, and the uniform distribution of the temperature inside the heating chamber 16 is favorably ensured.

In one embodiment of the present invention, it is preferable that at least two air inlet holes 164 are formed in a lower middle portion or a bottom portion of the heating chamber 16 on the remaining wall surface of the heating chamber 16 except the wall surface corresponding to the heating element 20, as shown in fig. 4.

In this embodiment, since the hot air moves upward due to the low density in the remaining wall surfaces of the heating chamber 16 except the wall surface corresponding to the heating element 20, the at least two air inlet holes 164 are disposed at a position below the middle portion of the heating chamber 16 or at the bottom portion of the heating chamber 16, so that the high-temperature air can rise greatly inside the heating chamber 16 after entering the heating chamber 16 through the at least two air inlet holes 164, which is beneficial to improving the circulation efficiency of the hot air in the heating chamber 16 and improving the uniformity of heating inside the heating chamber 16. Conceivably, the plurality of air outlet holes 162 are provided at the bottom of the heating chamber 16, which facilitates the flow of the low-temperature air inside the heating chamber 16 out of the heating chamber 16, ensures a rapid rise in the temperature inside the heating chamber 16, and shortens the cooking time period.

In one embodiment of the present invention, it is preferable that at least one air inlet hole 164 among the plurality of air inlet holes 164 is provided on at least one wall surface of the heating chamber 16 corresponding to the heating element 20, as shown in fig. 3.

In this embodiment, at least one of the air inlet holes 164 is disposed on one or more wall surfaces of the heating chamber 16 corresponding to the heating element 20, and by disposing the air inlet holes 164 on the wall surface corresponding to the heating element 20, a large amount of high-temperature air heated by the heating element 20 directly enters the heating chamber 16 through the air inlet hole 164 on the wall surface closest to the heating element, so that the high-temperature air can enter the heating chamber 16 quickly and in time, and the heating rate is increased. Preferably, the heating element 20 is disposed between the back wall of the heating chamber 16, which is provided with at least one air inlet hole 164, and the housing 12; or the heating element 20 is disposed between the back wall surface of the heating chamber 16 and the casing 12 and between one side wall surface and the casing 12, at least one air inlet hole 164 is provided on the back wall surface, or a plurality of air inlet holes 164 are provided on the back wall surface and the side wall surface, respectively.

It is conceivable that, when there are a plurality of air inlet holes 164 on at least one wall surface of the heating chamber 16 corresponding to the heating element 20, among the plurality of air inlet holes 164, the opening area of the air inlet hole 164 closer to the heating element 20 is larger, and/or the distance between two adjacent air inlet holes 164 closer to the heating element 20 is larger, and/or the plurality of air inlet holes 164 are provided at a lower middle portion or a bottom portion, i.e., a lower middle portion, of the at least one wall surface.

In one embodiment of the present invention, preferably, as shown in fig. 2, a duct 18 is formed between at least two side wall surfaces of the heating chamber 16 and the housing 12.

In this embodiment, an air duct 18 is further defined between at least two side wall surfaces of the heating chamber 16 and the housing 12, so that at least two side wall surfaces of the heating chamber 16 can be heated by the high-temperature gas to transfer heat into the heating chamber 16 or radiate heat into the heating chamber 16, which is beneficial to laterally heating the food in the food containing barrel 24, and improves heating and heat preservation effects.

In one embodiment of the present invention, preferably, as shown in fig. 1 to 5, the roasting appliance further comprises: the front door 14 is provided at the front end of the casing 12, and an air duct 18 is formed between a plurality of side wall surfaces of the heating chamber 16 and the casing 12.

In this embodiment, the roasting apparatus further has a front door 14 provided at the front end of the casing 12, and in this case, air ducts 18 are formed between a plurality of side wall surfaces of the heating chamber 16 and the casing 12, which facilitate multi-directional heating around the heating chamber 16. Preferably, the back wall surface and the side wall surface directly connected thereto of the heating chamber 16 form an air duct 18 with the housing 12.

In one embodiment of the present invention, preferably, the roasting appliance further comprises: and a top door provided at the top end of the casing 12, and air ducts 18 are formed between the respective side wall surfaces of the heating chamber 16 and the casing 12.

In this embodiment, the roasting apparatus further has a top door provided at the top end of the casing 12, and each side wall surface of the heating chamber 16 may form an air passage 18 with the casing 12, thereby facilitating heating all around the circumference of the heating chamber 16. Of course, it is contemplated that not all of the side walls may form the air channel 18 with the housing 12, but only the preferred embodiments are illustrated, and the other embodiments are not illustrated.

In one embodiment of the present invention, preferably, when the baking apparatus further comprises a front door 14, the inner surface area of the front door 14 is smaller than the area enclosed by the outer contour of the front wall surface of the heating chamber 16, and the air duct 18 is also formed between the front wall surface of the heating chamber 16 and the housing 12.

In this embodiment, when the baking apparatus has the front door 14, and when the front door 14 is smaller and the area of the inner surface of the front door 14 is smaller than the area enclosed by the outer contour of the front wall surface of the heating chamber 16, the air duct 18 can still be provided between the front wall surface surrounding the front door 14 and the housing 12, and at this time, the front surface of the heating chamber 16 can also be heated by the heat transfer or radiation of the high-temperature gas in the air duct 18, or by the high-temperature gas flowing out through the air inlet holes 164 on the front wall surface, so as to ensure that the temperature distribution inside the heating chamber 16 is more uniform.

In one embodiment of the present invention, preferably, the impeller 22 is a centrifugal impeller.

In this embodiment, the impeller 22 is a centrifugal impeller, which is beneficial to collect the gas in a centralized manner and blow the gas to all parts of the air duct 18 in a dispersed manner, and is beneficial to the uniform distribution of the temperature of the gas in the air duct 18, and thus the uniform distribution of the temperature in the heating chamber 16.

In one embodiment of the present invention, the heating element 20 is preferably a heating pipe, which is disposed around the outer circumference of the centrifugal impeller.

In this embodiment, the heating element 20 is preferably a heating tube, but may also be a heating wire, an infrared heating element, or the like. When the heating element 20 is a heating tube, the heating tube is disposed around the centrifugal impeller, which is beneficial to timely and uniformly heating the gas led out by the impeller 22, and thus, the temperature rising speed of the gas in the air duct 18 is prevented from being slow, which affects the overall heating speed of the baking apparatus.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are used broadly and should be construed to include, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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 (7)

1. A roasting appliance, comprising:

a housing;

a heating chamber provided inside the casing, an air duct being formed between a plurality of wall surfaces of the heating chamber and the casing, at least one of the wall surfaces being provided with a plurality of vent holes;

the heating element and the impeller are arranged in the air channel, and the impeller is positioned on one side of the heating element;

under the action of the heating element and the impeller, gas in the air duct is heated and flows into the heating chamber through part of the plurality of ventilation holes;

the plurality of vent holes comprise a plurality of air inlet holes;

the heating element corresponds to at least one wall surface of the heating chamber, and at least two air inlet holes in the plurality of air inlet holes are arranged on the rest wall surfaces except the wall surface corresponding to the heating element;

on the other wall surfaces of the heating chamber except the wall surface corresponding to the heating element, the opening area of each of the at least two air inlet holes is larger as being farther away from the heating element;

a front door provided at a front end of the housing, the air duct being formed between a plurality of side wall surfaces of the heating chamber and the housing; or

The top door is arranged at the top end of the shell, and the air duct is formed between each side wall surface of the heating chamber and the shell;

when the baking apparatus comprises the front door, the inner surface area of the front door is smaller than the area enclosed by the outer contour of the front wall surface of the heating chamber, and the air duct is also formed between the front wall surface of the heating chamber and the shell.

2. Baking apparatus according to claim 1,

the plurality of ventilation holes comprise a plurality of air outlet holes, and the plurality of air outlet holes are formed in the wall surface of the heating chamber, corresponding to the impeller.

3. Baking appliance according to claim 1,

the plurality of air inlet holes are provided in at least one of the plurality of walls.

4. Baking appliance according to claim 1,

and/or

The distance between any two adjacent air inlet holes in the at least two air inlet holes is smaller as the distance from the heating element is larger, and/or

The at least two air inlet holes are positioned at the middle lower part or the bottom of the heating chamber.

5. Baking apparatus according to claim 1,

at least one air inlet hole is formed in the wall surface of the heating chamber, which corresponds to the heating element.

6. Baking appliance according to any of the claims 1 to 5,

the air duct is formed between at least two side wall surfaces of the heating chamber and the shell.

7. Baking appliance according to any of claims 1 to 5,

the impeller is a centrifugal impeller;

the heating element is a heating pipe and is arranged around the periphery of the centrifugal impeller.

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