CN219628684U - Gas oven with uniform temperature distribution - Google Patents

Abstract

The utility model discloses a gas oven with uniform temperature distribution, which comprises a base provided with a furnace end, an upper cover matched with the base to form an oven cavity, wherein a baking column is arranged at the bottom of the oven cavity above the furnace end, the gas oven is also provided with a thermal circulation air duct and a circulating fan, the thermal circulation air duct comprises a top air duct arranged at the top of the upper cover and a side air duct arranged at the side surface of the upper cover, the side air duct is communicated with the top air duct, a fan air inlet communicated with the top air duct is correspondingly arranged in the central area above the baking column, the circulating fan is arranged above the fan air inlet, an inner air outlet is correspondingly arranged at the side surface of the upper cover, the inner air outlet faces towards the upper part of the baking column and is close to the baking column area, and the circulating fan sucks hot air in the oven cavity into the thermal circulation air duct and enables the hot air to flow along the thermal circulation air duct, blow out from the inner air outlet and blow out from the upper part of the baking column. The utility model can make the temperature distribution in the inner cavity of the oven more uniform, improve the effect of baking food and promote the user experience.

Description

Gas oven with uniform temperature distribution

[ field of technology ]

The utility model belongs to the technical field of ovens, and particularly relates to a gas oven.

[ background Art ]

The existing gas oven in the market comprises a base, an upper cover and an oven cavity arranged between the base and the upper cover, wherein a furnace end is arranged on the base, a baking column is arranged at the bottom of the oven cavity above the furnace end, food is placed on the baking column, the furnace end burns to generate flame and heats air, and therefore the food on the baking column is baked.

Because flame concentrates on the roast fence bottom, and the heat that produces concentrates on the bottom of roast fence and food, and the furnace end burns a part of heat that produces simultaneously and upwards carries the hot air through thermal convection, and the central zone temperature that is close to the upper cover above the roast fence is also higher, but keeps away from food, and the regional heat in oven inner chamber side is less relatively, therefore the food heating on the roast fence is inhomogeneous, toasts food effect inequality, influences user's use experience.

[ utility model ]

Aiming at the defects in the prior art, the technical problem to be solved by the utility model is to provide the gas oven with uniform temperature distribution, so that the temperature of the inner cavity of the oven is more uniform, and the baking effect of food is improved.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a temperature evenly distributed's gas oven, includes the base that is equipped with the furnace end, forms the upper cover of oven inner chamber with the base cooperation, oven inner chamber bottom is equipped with the roast fence in the furnace end top, gas oven still is equipped with thermal cycle wind channel and circulating fan, the thermal cycle wind channel is including the top wind channel of locating the upper cover top and the lateral part wind channel of locating the upper cover side, lateral part wind channel and top wind channel intercommunication, the upper cover top corresponds the fan air intake that is equipped with top wind channel intercommunication in roast fence top central region, circulating fan locates fan air intake top, lateral part wind channel corresponds the upper cover side and is equipped with interior air outlet, interior air outlet is close to roast fence region towards roast fence top, circulating fan inhales the hot air in the oven inner chamber in the thermal cycle wind channel to make the hot air flow along the thermal cycle wind channel, blow out after the roast fence top through interior air outlet.

Preferably, the thermal circulation air duct is provided with two side air ducts, the two side air ducts are symmetrically arranged on two lateral sides of the upper cover, the fan air inlet and the circulation fan are correspondingly arranged in the central area of the top of the upper cover, the top air duct extends from the central area of the top of the upper cover to two lateral sides, and two ends of the top air duct are respectively communicated with the two side air ducts.

Preferably, the front side wall and the rear side wall of the middle part of the top air duct are provided with logarithmic spiral lines corresponding to the positions of the circulating fans.

Preferably, a volute tongue is arranged at the connection position of the logarithmic spiral and the two lateral sides of the top air duct.

Preferably, the width of the side air duct increases from top to bottom.

Preferably, the height of the top air channel is H1, the height of the side air channels is H2, and H1 is more than H2.

Preferably, the lowest point of the inner air outlet is higher than the baking railing, and the height higher than the baking railing is smaller than 2cm.

Preferably, an air inlet filter screen is arranged at the air inlet of the fan; and/or, the inner air outlet is provided with a plurality of inner air outlet holes, and the inner air outlet extends along the length direction of the side surface of the upper cover and is provided with at least one row of inner air outlet holes along the length direction.

Preferably, a heat radiation plate is arranged between the furnace end and the baking railing.

Preferably, the rear side wall of the upper cover is provided with an air outlet.

The utility model adopts the technical scheme and has the following beneficial effects:

1. the flame generated by the combustion of the burner heats food on the baking oven, and the heat rises, and the burner is communicated with the inner cavity of the baking oven, so that part of heat generated by the combustion of the burner conveys hot air upwards through thermal convection, namely the upper part of the inner cavity of the baking oven, and the temperature of the central area, close to the top of the upper cover, of the upper part of the inner cavity of the baking oven is highest, therefore, the air inlet of the fan is opposite to the central area above the baking oven, the hot air in the central area above the baking oven is sucked into the thermal circulation air channel through the circulating fan, flows along the thermal circulation air channel and finally blows back to the side area of the inner cavity of the baking oven.

Because the inner air outlet faces the upper part of the baking railing and is close to the baking railing area, hot air blown out from the inner air outlet can blow out from the upper part of the baking railing to heat food on the baking railing;

and the hot air blown out from the inner air outlet and the hot air in the central area above the baking railing form convection, so that the temperature distribution in the inner cavity of the baking oven is more uniform, the effect of baking food is improved, and the user experience is improved.

2. Considering that a part of heat is transferred through the heat circulation, the air flow in the top air channel on the upper cover must be blown out transversely, and cannot be blown down directly to the bottom area of the upper cover, otherwise, the hot air cannot be sent into the heat circulation air channel, and therefore the top air channel extends from the central area of the top of the upper cover to two lateral sides;

hot air is transversely blown back to the inner cavity of the oven from the inner air outlet through the side air channels on the left side and the right side of the upper cover, so that two heat convection loops are formed in the oven, and the inner temperature in the inner cavity of the oven is more uniform.

3. Because the middle part of the top air channel is provided with the logarithmic spiral line, and the volute tongue is arranged at the joint position of the top air channel and the two lateral sides of the top air channel, when hot air flows from the middle of the top air channel to the two lateral sides, the turbulence of internal air can be reduced, and the noise is reduced.

4. The width of the side air duct is increased from top to bottom, the inner air outlet is arranged at the lower part of the side air duct and extends along the width direction of the side air duct, so that hot air blown out from the inner air outlet can be uniformly distributed in the front-rear direction of the inner cavity of the oven.

5. Because the height of the top air channel is greater than that of the side air channels, when hot air passes through the top air channel to the side air channels, the pressure is increased, and when the hot air is blown out through the inner air outlet, the speed is higher, so that the air circulation is more uniform.

6. The lowest point of the inner air outlet is higher than the highest point of the baking railing, so that the hot air can be blown through food placed on the baking railing after being blown out transversely, and the food is ensured to be heated uniformly. And the height higher than the baking oven is lower than 2cm, if the height higher than the baking oven is too high, the hot air continuously flows upwards in the middle area of the inner cavity of the baking oven after being blown out transversely and reenters the thermal circulation air duct, so that food cannot be effectively heated.

7. An air inlet filter screen is arranged at the air inlet of the fan, so that food scraps and the like can be prevented from being sucked into the thermal circulation air duct; because the inner air outlet extends along the length direction of the side surface of the upper cover and at least one row of inner air outlet holes are arranged along the length direction, the hot air blown out of the inner air outlet can be uniformly distributed in the front-back direction of the inner cavity of the oven.

8. After the burner is ignited, a part of heat energy is transferred to the heat radiation plate, and after the heat radiation plate is heated, the heat energy is transferred to the baking railing through heat radiation to heat food, so that the food can be uniformly heated.

9. The back side wall of the upper cover is provided with an air outlet, when the furnace end burns, hot air rises, and part of hot air is discharged from the air outlet so as to balance a certain temperature in the inner cavity of the oven.

These features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described with reference to the accompanying drawings:

FIG. 1 is a schematic view of a gas oven in an open state of an upper cover;

FIG. 2 is a schematic view of the gas oven in the upper lid closed state;

FIG. 3 is a schematic view of the internal structure of a gas oven;

FIG. 4 is a schematic illustration of the internal thermal convection cycle of a gas oven;

FIG. 5 is a schematic view of the structure of the top duct and the side duct;

FIG. 6 is a top view of a top duct;

FIG. 7 is a schematic view of a top duct and a side duct;

reference numerals: the upper cover 1, the upper cover housing 11, the inner housing 111, the outer housing 112, the interlayer 113, the circulation fan 12, the centrifugal fan blade 121, the motor 122, the heat circulation duct 13, the top duct 131, the middle portion 1311, the logarithmic spiral 1312, the volute tongue 1313, the lateral side 1314, the lateral side duct 132, the fan air inlet 133, the inner air outlet 134, the outer air outlet 135, the handle 136, the base 2, the case 21, the burner 22, the heat radiation plate 23, the grill 24, the gas bottle 25, the control panel 26, the door 27, and the baffle assembly 3.

[ detailed description ] of the utility model

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

Those skilled in the art will appreciate that the features of the examples and embodiments described below can be combined with one another without conflict.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The words "upper", "lower", "inner", "outer", "front", "rear", and the like, which refer to an orientation or positional relationship as follows, are merely based on the orientation or positional relationship shown in the drawings, for convenience of description and simplicity of description, and do not indicate or imply that the devices/elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus are not to be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1

As shown in fig. 1 to 7, the present embodiment provides a gas oven, which includes a base 2, an upper cover 1, and an oven cavity provided between the base 2 and the upper cover 1. The base 2 is provided with a furnace end 22, and the bottom of the inner cavity of the oven is provided with a baking railing 24 above the furnace end 22. A hinge is usually provided between the upper cover 1 and the base 2, and the oven cavity is closed or opened by the upper cover 1 to put in or take out the food to be baked.

The volume of the inner cavity of the gas oven is much larger than that of a common air fryer and oven, and is generally more than 250000mm ³ At present, foods are baked mainly by flame and heat of combustion of a furnace end, and the temperature distribution in the inner cavity of the oven is uneven. To convect the hot air inside the oven cavity to increase temperature uniformity. In this embodiment, the gas oven is further provided with a circulation fan 12 and a thermal circulation duct 13, wherein the circulation fan 12 sucks the hot air in the middle region of the oven cavity into the thermal circulation duct 13, and blows the hot air back to the side region of the oven cavity along the thermal circulation duct. The hot air continues to flow upwards and in the middle area after being blown out of the side area, and forms convection with the air in the inner cavity of the oven, so that the temperature distribution in the inner cavity of the oven is more uniform, the effect of baking food is improved, and the user experience is improved.

In this embodiment, the thermal circulation air duct 13 includes a top air duct 131 disposed at the top of the upper cover and a side air duct 132 disposed at the side of the upper cover, and the upper end of the side air duct is communicated with the end of the top air duct.

The circulating fan 12 is usually a centrifugal fan, and comprises a motor 122 and centrifugal blades 121, a fan air inlet 133 communicated with a top air duct 131 is arranged in the central area of the top of the upper cover, the circulating fan 12 is arranged above the fan air inlet, and an inner air outlet 134 is arranged on the side face of the side air duct 132 corresponding to the upper cover.

The flame generated by the combustion of the burner heats the food on the baking grate, and the heat rises, and the burner is communicated with the inner cavity of the oven, so that the burner also has a part of heat energy for conveying hot air upwards, namely the inner cavity of the oven, through thermal convection, the temperature of the central area, which is close to the top of the upper cover, of the upper part of the inner cavity of the oven is highest, and the temperature of the side area is lower. Therefore, the fan air inlet 133 and the circulating fan 12 are correspondingly arranged in the central area of the top of the upper cover and correspondingly arranged right above the central area above the baking grate, so as to suck the hot air with higher temperature in the middle area of the inner cavity of the oven into the hot circulating air duct.

Considering that some heat is transferred through the heat cycle, the hot air blown out from the heat cycle air duct 13 must be blown out laterally, not directly down to the bottom area of the upper cover, or else the hot air cannot be sent into the heat cycle air duct. Therefore, as shown in fig. 3 and 4, in this embodiment, two side air channels 132 are simultaneously provided, and the two side air channels 132 are symmetrically provided on two lateral sides of the upper cover, the top air channel 131 extends from the central area of the top of the upper cover to two lateral sides, two ends of the top air channel are respectively communicated with the two side air channels, and hot air is blown back to the oven cavity from the inner air outlet through the side air channels on the left and right sides of the upper cover. So that hot air blown out from the inner air outlet 134 of the side air duct does not affect the hot air suction of the central area into the heat circulation air duct. And the hot air forms two internal heat circulation in the inner cavity of the oven under the action of the circulating fan and the heat circulation air duct, so that the temperature in the inner cavity of the oven is more uniform.

An air inlet filter screen can be arranged at the air inlet of the fan to avoid food scraps and the like from being sucked into the thermal circulation air channel. The air inlet filter screen can adopt a concentric ring net structure.

Generally, the inner air outlet 134 may be disposed on any side of the upper cover, including any one or more of front, rear, and lateral sides. In this embodiment, two side air channels 132 are corresponding to two inner air outlets 134, which are correspondingly disposed on the two side air channels, and the inner air outlets 134 are close to the bottom of the oven cavity and towards the area above the baking oven and close to the baking oven. Thus, the hot air is blown out from the inner air outlet and then is blown out from the upper part of the baking railing, and the food on the baking railing is heated.

Further, the lowest point of the inner air outlet 134 is higher than the highest point of the grill 24, and the height of the inner air outlet is lower than 2cm. Therefore, the hot air can be blown through the food placed on the baking railing after being transversely blown out, and the food is ensured to be heated uniformly. If the height of the oven is higher than that of the baking railing, the hot air continuously flows upwards in the middle area of the inner cavity of the oven after being blown out transversely and reenters the heat circulation air duct, so that food cannot be heated effectively.

Further, the width of the side air duct 132 is increased from top to bottom, the upper portion is in an isosceles trapezoid structure, and the lower portion is in a rectangular structure, and since the inner air outlet 134 is arranged at the lower portion of the side air duct 132, the inner air outlet is provided with a plurality of inner air outlet holes, and the inner air outlet extends along the front-back direction (the width direction of the side air duct) of the side face of the upper cover and is provided with at least one row of inner air outlet holes along the extending direction thereof. Therefore, the hot air blown out from the inner air outlet can be uniformly distributed in the front-back direction of the inner cavity of the oven, and the hot air blown to the food on the baking railing is also uniform.

As shown in FIG. 7, the height of the top air duct is H1, and the height of the side air duct is H2, H1 > H2. So that the pressure is increased when the hot air passes through the top air duct to the side air ducts, and a faster speed is obtained when the hot air is blown out through the inner air outlet, so that the air circulation is more uniform.

In addition, the rear side wall of the inner cavity of the upper cover is also provided with an air outlet 135. Of course, the device may be provided at other locations. When the burner burns, the hot air rises and a portion is exhausted from the outlet to balance a temperature (i.e., a preferred baking temperature) in the oven cavity. A heat radiation plate 23 is arranged between the furnace end 22 and the baking railing 24. After the burner is ignited, a part of heat energy is transferred to the heat radiation plate, and after the heat radiation plate is heated, the heat energy is transferred to the baking railing through heat radiation to heat food.

In order to form the thermal circulation duct 13 on the upper cover, the upper cover 1 includes an upper cover case 11, the upper cover case 11 includes an inner case 111 and an outer case 112, and an interlayer 113 is provided between the inner case 111 and the outer case 112. The above-mentioned thermal circulation air duct 13 and the installation circulation fan 12 are formed in the interlayer 113, and specifically, air duct baffles may be disposed on two side walls of the thermal circulation air duct 13, and the two sides of the height of the air duct baffles are correspondingly connected with the inner casing 111 and the outer casing 112. Meanwhile, the sandwich structure also has a heat insulation effect, so that heat in the inner cavity is prevented from being rapidly dissipated to the outside.

As shown in fig. 1 to 3, the front of the upper cover is provided with a handle 136 to facilitate opening and closing of the upper cover. Baffle assemblies 3 are arranged on two lateral sides of the top of the base. The front side of the top of the base is provided with a control panel 26 and control components such as a valve for controlling the furnace end are arranged. The base 2 is provided with a box body 21, a gas bottle 25 is arranged in the inner cavity of the box body and is connected with the furnace end through a gas pipe to supply gas for the furnace end, and a box door 27 is arranged at the front side. This may facilitate outdoor use without natural gas.

With reference to a common hinge structure, the hinge includes a lower hinge fixed to the base, an upper hinge fixed to the upper cover, and a pin shaft connecting the upper hinge and the lower hinge.

It can be appreciated that in order to realize the buffering of the upper cover in the cover opening and closing process, a hinge spring can be further arranged between the upper cover and the base, and the self gravity of the upper cover is larger than the torsion of the hinge spring. Specifically, the hinge spring is sleeved on the pin shaft, and two ends of the hinge spring are provided with supporting feet which are correspondingly connected with the upper hinge and the lower hinge. In the cover closing process, the gravity of the upper cover plays a positive role, the upper cover rotates downwards to be closed, the torsion of the hinge spring plays a buffering role, and in the cover opening process, the gravity of the upper cover is overcome by hands, the torsion of the hinge spring plays a positive role, and the upper cover is opened up and down in an auxiliary mode. In the closing process, the gravity of the upper cover is larger than the torsion of the hinge spring, so that the upper cover can smoothly reach the closing position, the impact force generated by a sudden box cover is avoided, and the use experience is good; therefore, the torsion of the hinge spring and the self weight of the upper cover are combined to realize buffering, and the device is opened and used without an excessive locking mechanism, so that the operation is concise and the experience is good.

Example two

As shown in fig. 5 and 6, in order to reduce noise, the lateral sides of the top air duct 131, that is, the lateral sides 1314 are rectangular structures, the center lines of the lateral sides of the top air duct are staggered a certain distance in the front-rear direction, and the front and rear side walls of the middle 1311 of the top air duct are provided with logarithmic spiral lines 1312 corresponding to the positions of the circulating fans. The connection position of the logarithmic spiral 1312 and the two lateral sides of the top air duct is provided with a volute tongue 1313. The design of the logarithmic spiral and the volute tongue can reduce the air turbulence in the top air channel, thereby reducing noise.

It will be appreciated that the magnitude of the optimal helix angle may be determined experimentally.

It will be appreciated that other curves, such as archimedes' spiral, may be used for the front and rear sidewalls of the top tunnel middle 1311 corresponding to the position of the circulating fan.

While the utility model has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the utility model is not limited thereto but includes, but is not limited to, the drawings and the description of the specific embodiments. Any modifications which do not depart from the functional and structural principles of the utility model are intended to be included within the scope of the appended claims.

Claims (10)

1. The utility model provides a temperature evenly distributed's gas oven, includes the base that is equipped with the furnace end, form the upper cover of oven inner chamber with the base cooperation, oven inner chamber bottom is equipped with the roast fence in the furnace end top, its characterized in that, gas oven still is equipped with thermal cycle wind channel and circulating fan, the thermal cycle wind channel is including the top wind channel of locating the upper cover top and the lateral part wind channel of locating the upper cover side, lateral part wind channel and top wind channel intercommunication, the upper cover top corresponds the fan air intake that is equipped with top wind channel intercommunication in roast fence top central zone, circulating fan locates fan air intake top, lateral part wind channel corresponds the upper cover side and is equipped with interior air outlet, interior air outlet is close to roast fence area towards roast fence top, circulating fan inhales the hot air in the oven inner chamber in the thermal cycle wind channel to make the hot air flow along the thermal cycle wind channel, blow out after the roast fence top through interior air outlet.

2. The gas oven with uniform temperature distribution according to claim 1, wherein the thermal circulation air duct is provided with two side air ducts, the two side air ducts are symmetrically arranged on two lateral sides of the upper cover, the fan air inlet and the circulation fan are correspondingly arranged in the central area of the top of the upper cover, the top air duct extends from the central area of the top of the upper cover to two lateral sides, and two ends of the top air duct are respectively communicated with the two side air ducts.

3. The gas oven with uniform temperature distribution according to claim 2, wherein the front and rear side walls of the middle part of the top air duct are provided with logarithmic spiral lines corresponding to the circulating fan.

4. A gas oven with uniform temperature distribution according to claim 3, wherein a volute tongue is arranged at the connection position of the logarithmic spiral and the two lateral sides of the top air duct.

5. The gas oven of claim 1, wherein the width of the side air duct increases from top to bottom.

6. The gas oven with uniform temperature distribution according to claim 1, wherein the top duct has a height H1 and the side ducts have a height H2, H1 > H2.

7. The gas oven with uniform temperature distribution according to claim 1, wherein the lowest point of the inner air outlet is higher than the baking rail, and the height higher than the baking rail is less than 2cm.

8. The gas oven with uniformly distributed temperature according to claim 1, wherein the air inlet of the fan is provided with an air inlet filter screen; and/or, the inner air outlet is provided with a plurality of inner air outlet holes, and the inner air outlet extends along the length direction of the side surface of the upper cover and is provided with at least one row of inner air outlet holes along the length direction.

9. The gas oven of claim 1, wherein a heat radiation plate is disposed between the burner and the grill.

10. The gas oven with uniform temperature distribution according to claim 1, wherein the rear side wall of the upper cover is provided with an air outlet.