Frying and baking machine

Abstract

The utility model discloses a frying and baking machine, which belongs to the field of kitchen appliances, solves the problem that the cooking effect is influenced by larger temperature difference between a heating tube area and other areas, poor energy storage of a baking tray and non-uniform surface temperature of the baking tray when the frying and baking machine is used, and adopts the technical scheme that the frying and baking machine mainly comprises the baking tray and a heating tube, a cooking area for containing food is defined by the bottom wall and the side wall, the heating pipe is fixed to the outer bottom face of the bottom wall, a bottom interlayer and a side interlayer which are communicated are arranged in the bottom wall and the side wall respectively, the bottom interlayer is filled with a heat-conducting medium, and the heat-conducting medium expands to fill the side interlayer after being heated by the heating pipe. The volume of the heat-conducting medium in the side interlayer accounts for more than half of the volume of the side interlayer and is smaller than the volume of the side interlayer. The temperature difference between the heating tube area and other areas is mainly reduced, the energy storage effect of the baking tray is improved, the temperature nonuniformity of the surface of the baking tray is reduced, and the cooking effect of food is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of kitchen appliances, in particular to a frying and baking machine. BACKGROUND

[0002] At present, the frying and baking machine widely enters people's life, can utilize its upper and lower two sides to heat food at the same time, is often used for frying or baking food, because the food made is delicious and tasty, convenient to use, is very popular with users.

[0003] The prior art CN208905571U discloses a baking tray assembly and frying and baking machine. The baking tray assembly comprises a shell and a heat insulation device, the shell cover is arranged on the heating device; the heat insulation device comprises a cover body arranged in the shell and covering the heating device, and an exhaust device arranged on the cover body, a first cavity is formed between the heat insulation device and the heating device, a second cavity is formed between the heat insulation device and the shell, the first cavity and the second cavity are used to block the heat radiated by the heating device to the shell; the exhaust device is provided with an air inlet, the air inlet is communicated with the first cavity, so as to exhaust the gas in the first cavity to the outside of the shell; the frying and baking machine comprises an upper tray assembly and a lower tray assembly hinged with the upper tray assembly, at least one of the upper tray assembly and the lower tray assembly is the above-mentioned baking tray assembly, the baking tray assembly of CN208905571U can keep the temperature of the surface of the shell within a safe temperature range, so as to avoid the high surface temperature of the shell from causing injury. In the prior art CN208905571U, the heating device comprises a fixed support and a heating pipe fixed on the fixed support, the heating pipe is fixed on one side of the fixed support close to the baking tray, so that the heat generated by the heating pipe is transmitted to the upper baking tray, and in order to make the upper baking tray heat more uniformly, the heating pipe is distributed on the fixed support in a circuitous manner, so as to increase the contact area of the heating pipe and the baking tray.

[0004] In all the above prior arts, the heating pipe is arranged on the outer bottom surface of the baking tray. When heating, the heat is transmitted from the outer bottom surface of the baking tray to other parts. The temperature of the area of the baking tray in contact with the heating pipe is the highest, and the heat of other areas needs to be transmitted from the high-temperature area to the low-temperature area. In addition, the existing baking tray is relatively thin, has poor energy storage and fast heat dissipation, which results in a large temperature difference between the area of the baking tray in contact with the heating pipe and other areas, uneven temperature of the inner surface of the baking tray, and poor cooking effect. UTILITY MODEL CONTENTS

[0005] The utility model wants to achieve the purpose of providing a frying and baking machine, solving the problem that the area of the baking tray in contact with the heating pipe and other areas has a large temperature difference when using the frying and baking machine, resulting in uneven temperature of the inner surface of the baking tray and affecting the cooking effect, reducing the temperature difference between the area of the baking tray in contact with the heating pipe and other areas, improving the uniformity of the temperature of the inner surface of the baking tray, and further improving the cooking effect of food, and also improving the energy storage effect of the baking tray.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of baking machine, including baking tray and heating pipe, baking tray includes bottom wall and side wall, both enclose the cooking area of containing food, heating pipe is fixed to the outer bottom surface of bottom wall, the bottom wall and side wall are respectively provided with the bottom interlayer and side interlayer that are connected, bottom interlayer is filled with heat conducting medium, heat conducting medium expands and fills side interlayer after being heated by heating pipe, the volume of heat conducting medium in side interlayer is more than half of the volume of side interlayer and less than the volume of side interlayer.

[0007] After adopting the above technical scheme, the utility model has the following advantages: baking tray forms cooking area by bottom wall and side wall, after food is placed in cooking area, heating pipe is opened and heated on the outer bottom surface of bottom wall, heat conducting medium is expanded and filled in bottom interlayer and side interlayer by heat, so that the heat of heating pipe is transmitted to cooking area by heat conducting medium, since heat conducting medium expands and fills in side interlayer, "water bath state" of uniform heating can be formed, temperature difference between bottom wall and side wall is reduced, surface temperature uniformity in baking tray is improved, and then cooking effect of food is improved;Heat conducting medium is filled in side interlayer after expansion, so that heat conducting medium in side interlayer is equivalent to form heat preservation layer, heat preservation effect of side wall is increased, and cooling speed of side wall of baking tray is reduced.The volume of heat conducting medium is set to be more than half of the volume of side interlayer and less than the volume of side interlayer after expansion and filling in side interlayer, so that heat conducting medium is filled in side interlayer as much as possible after expansion, but it is not filled in side interlayer completely, risk of overflow of heat conducting medium is avoided, and safety of use of baking tray is improved.

[0008] Further, the volume of the heat conducting medium at normal temperature is less than or equal to the volume of the bottom interlayer.

[0009] By using the foregoing technical scheme, the volume of the heat conducting medium at normal temperature is set to be less than or equal to the volume of the bottom interlayer, on the one hand, a smaller amount of heat conducting medium can achieve the purpose of the application, and the bottom wall and the side wall are prevented from being subjected to the pressure of the expanded heat conducting medium, and on the other hand, the heat conducting medium can lose the heat preservation function of the side wall after cooling, which is conducive to further improving the cooling speed.

[0010] Further, the bottom interlayer is provided with a flow guide rib between the upper wall surface and the lower wall surface, the flow guide rib extends outward from the center of the bottom wall and forms a spiral flow channel, and the outlet of the spiral flow channel is located at the edge of the bottom interlayer.

[0011] By using the foregoing technical scheme, the viscosity of the heat conducting medium is reduced after heating, and the heat conducting medium flows along the spiral flow channel under the guidance of the flow guide rib, so that the speed of the heat conducting medium filling into the side interlayer is accelerated, and the temperature rising speed of the cooking area and the entering into the uniform heating state are further accelerated. The flow guide rib can also support the upper wall surface and the lower wall surface of the bottom interlayer to ensure the thickness stability of the bottom interlayer.

[0012] Further, the guide ribs are provided with multiple and form multiple spiral flow channels.

[0013] By the foregoing technical scheme, the guide ribs are provided with multiple and form multiple spiral flow channels, further accelerating the flow of the heat-conducting medium from the bottom interlayer to the side interlayer after being heated, and then faster entering the uniform heating state.

[0014] Further, the outlets of the spiral flow channels are uniformly distributed on the edge of the bottom interlayer.

[0015] By the foregoing technical scheme, the outlets of the multiple spiral flow channels are uniformly distributed on the edge of the bottom interlayer, so that the heat-conducting medium is uniformly filled in the side interlayer after entering the side interlayer from the bottom interlayer, improving the uniformity of the distribution of the heat-conducting medium, and then improving the temperature uniformity and stability after the sidewall is heated.

[0016] Further, the width W of the spiral flow channel is greater than the thickness B1 of the bottom interlayer.

[0017] By the foregoing technical scheme, the width of the spiral flow channel is set to be greater than the thickness of the bottom interlayer, so that the width between the adjacent two guide ribs is relatively large, and then the flowability of the heat-conducting medium after being heated is improved.

[0018] Further, the thickness B1 of the bottom interlayer is equal to the thickness B2 of the side interlayer.

[0019] By the foregoing technical scheme, the thickness of the bottom interlayer is equal to the thickness of the side interlayer, so that the thickness of the heat-conducting medium filled between the bottom interlayer and the side interlayer is relatively uniform, and a more uniform heating state is obtained.

[0020] Further, the baking tray comprises a first disc body and a second disc body, the first disc body is sleeved outside the second disc body and is sealingly connected to form the bottom interlayer and the side interlayer, and the heating pipe is fixed to the outer bottom surface of the first disc body.

[0021] By the foregoing technical scheme, the heating pipe is fixed to the outer bottom surface of the first disc body, when the heating pipe generates heat, the heat is transmitted to the bottom interlayer through the outer bottom surface of the first disc body, so that the heat-conducting medium in the bottom interlayer is heated to heat the food in the cooking area, and part of the heat is also transmitted to the side interlayer, so that the side interlayer can be preheated, and the sleeving of the first disc body and the second disc body facilitates the assembly of the baking tray.

[0022] Further, the edge of the second disc body is provided with a flange, and the top end of the first disc body abuts the lower surface of the flange.

[0023] The edge of the second disc body is provided with a flange, when the first disc body and the second disc body are installed, the first disc body is sleeved on the outer sidewall of the second disc body from bottom to top until the top end of the first disc body abuts against the flange, so that the thickness uniformity of the bottom interlayer and the side interlayer is easily ensured, the flange is supported by the top end of the first disc body, and the stability of the second disc body is improved; and the first disc body and the second disc body are conveniently sealed and assembled through welding or the like.

[0024] Further, the top of the side interlayer is provided with a gas venting and pressure relief valve.

[0025] According to the above technical scheme, the gas in the side interlayer is discharged through the gas venting and pressure relief valve when the heating pipe works, so that the high-pressure environment in the side interlayer is avoided to cause a safety risk, and in the cooling process, the low-temperature air outside can enter the side interlayer to accelerate the cooling speed. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further described below in combination with the drawings:

[0027] Figure 1 It is the initial state schematic view of the heat conduction medium in the utility model;

[0028] Figure 2 It is the state schematic view of the heat conduction medium expansion in the utility model;

[0029] Figure 3 It is the utility model Figure 2 The enlarged view of A in the utility model;

[0030] Figure 4 It is the structure schematic view of the flow guide rib in the utility model;

[0031] Figure 5 It is the structure schematic view of the flow guide rib and the bottom interlayer in the utility model;

[0032] Figure 6 It is the utility model Figure 5 The enlarged view of B in the utility model;

[0033] Figure 7 It is the structure schematic view of the first disc body and the second disc body in the utility model. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0035] The terms "first", "second", and the like (if any) in the description and claims of the utility model are used to distinguish similar objects, and are not used to describe a specific order or sequence, even if "second" is used in front of a certain technical feature to distinguish, it does not mean that it must have "first". It should be understood that in the utility model, "including" and "having" and any variation thereof are intended to cover non-exclusive inclusion. It should be understood that in the utility model, "multiple" refers to two or more than two. And / or is only a description of the association relationship of the associated object, which means that there are three kinds of relationships, for example, X and / or Y can represent: three cases of X alone, X and Y exist at the same time, and Y alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship. "Including X, Y and Z", "including X, Y, Z" means that X, Y and Z are all included, "including X, Y or Z" means that one of X, Y and Z is included, and "including X, Y and / or Z" means that any one or any two or three of X, Y and Z is included.

[0036] The technical scheme of the utility model will be described in detail below with specific examples. The following specific examples can be combined or replaced according to actual conditions, and the same or similar concepts or processes may not be described in some examples.

[0037] As shown in Figure 1 The utility model provides a kind of grill, including baking tray 1 and heating pipe 2, baking tray 1 includes bottom wall 11 and side wall 12, which is enclosed into the cooking area 13 of containing food, heating pipe 2 is fixed to the outer bottom surface of bottom wall 11, after energization, heating pipe 2 generates heat, food is placed on the upside of bottom wall 11 before heating, when starting heating or when heating to the required temperature of food, so that food continues to cook by the heating of heating pipe 2;When producing baking tray 1, bottom wall 11 and side wall 12 are provided with bottom interlayer 111 and side interlayer 121 respectively, to improve the heating speed of heating pipe 2 and the upside of bottom wall 11, the inside surface of side wall 12, bottom interlayer 111 is filled with heat conducting medium 3, when heating pipe 2 heats, the heat of heating pipe 2 is transferred to the upside of bottom wall 11 by heat conducting medium 3, to improve the heating speed of the upside of bottom wall 11, improve the frying speed of food;In this embodiment, heat conducting medium 3 is usually paraffin, kerosene, hydrocarbon and the like, which will expand after heating, such as Figure 2As shown, the heat-conducting medium 3 filled in the bottom interlayer 111 is filled into the side interlayer 121 after thermal expansion, which can form a uniform heating "water bath state", so that the heat-conducting medium 3 also heats the cooking area 13 from the side interlayer 121, reduces the temperature difference between the bottom wall 11 and the side wall 12, improves the surface temperature uniformity of the baking tray 1, and further improves the cooking effect of the food; by filling the heat-conducting medium 3 in the side interlayer 121 after thermal expansion, a heat preservation layer is also formed at the side interlayer 121 to play a heat preservation role, increase the heat preservation effect of the side wall 12, and reduce the cooling speed of the side wall 12 of the baking tray 1, thereby improving the heat storage capacity of the bottom wall 11 and the side wall 12; as shown, Figure 2 and Figure 3 As shown, the volume of the heat-conducting medium 3 that expands into the side interlayer 121 accounts for more than half of the volume of the side interlayer 121 and is less than the volume of the side interlayer 121, so that the heat-conducting medium 3 expands as much as possible to fill in the side interlayer 121 but does not completely fill the side interlayer 121, avoiding the risk of overflow of the heat-conducting medium 3 and improving the safety of the baking tray 1. Specifically, when adding the heat-conducting medium 3, the heat-conducting medium 3 at room temperature can be filled into the side interlayer 121, only filled into the bottom interlayer 111, or the volume of the filled heat-conducting medium 3 is less than the volume of the bottom interlayer 111, which can effectively improve the heating speed of the baking tray 1 and as much as possible avoid the pressure on the bottom wall 11 and the side wall 12 after the expansion of the heat-conducting medium 3, thereby improving the safety performance.

[0038] In order to avoid the pressure on the bottom wall 11 and the side wall 12 after the expansion of the heat-conducting medium 3, the volume of the heat-conducting medium 3 at room temperature is less than or equal to the volume of the bottom interlayer 111, on the one hand, a smaller amount of heat-conducting medium 3 can achieve the purpose of the invention, avoiding the heat-conducting medium 3 from completely filling in the side interlayer 121 after expansion, thereby avoiding the pressure on the bottom wall 11 and the side wall 12 after the expansion of the heat-conducting medium 3, and on the other hand, the heat-conducting medium 3 can lose the heat preservation function of the side wall 12 after cooling, which is conducive to further improving the cooling speed.

[0039] In order to accelerate the heat-conducting medium 3 to expand and fill into the side interlayer 121 from the bottom interlayer 111, as shown, Figure 4 A flow guide rib 112 is arranged between the upper wall surface and the lower wall surface of the bottom interlayer 111, the flow guide rib 112 extends outward in a spiral from the center of the bottom wall 11 and forms a spiral flow channel 113, the outlet of the spiral flow channel 113 is located at the edge of the bottom interlayer 111, the viscosity of the heat-conducting medium 3 decreases after thermal expansion, and under the flow guide action of the flow guide rib 112, the heat-conducting medium 3 flows faster in the spiral flow channel 113 to the edge of the bottom interlayer 111, thereby accelerating the speed of the heat-conducting medium 3 to fill into the side interlayer 121, and accelerating the heating speed of the cooking area 13 to enter the uniform heating state faster. The flow guide rib 112 can also support the upper wall surface and the lower wall surface of the bottom interlayer 111 to ensure the thickness stability of the bottom interlayer 111.

[0040] In the embodiment, the plurality of flow guides 112 are provided, and each of the plurality of flow guides 112 forms a spiral flow channel 113, and the outlets of the spiral flow channels 113 are uniformly distributed on the edge of the bottom layer 111, further accelerating the flow of the heat conducting medium 3 from the bottom layer 111 to the side layer 121 after being heated, and then more quickly entering the uniform heating state; the uniform distribution of the outlets of the spiral flow channels 113 makes the heat conducting medium 3 uniformly distributed when entering the side layer 121, thereby avoiding the uneven distribution of the heat conducting medium 3 to affect the heating speed of the cooking area 13, and improving the temperature uniformity and stability of the side wall 12 after being heated.

[0041] In another embodiment, as shown in Figure 6 , the width W of the spiral flow channel 113, the thickness B1 of the bottom layer 111, W>B1, the spiral flow channel 113 is wider, so that the width between the adjacent two flow guides 112 is larger, thereby improving the flowability of the heat conducting medium 3 after being heated; in the production of the baking tray 1, the flow guide 112 and the upper wall of the bottom layer 111 are usually considered to be integrally cast by a mold, the thickness of the flow guide 112 is set to be smaller than the width of the spiral flow channel 113, so as to reduce the cavities formed in the flow guide 112 due to the poor air exhaust of the pouring material, thereby affecting the strength and thermal conductivity of the flow guide 112; the flow guide 112 can also be integrally die-cast with the lower side wall 12 of the bottom layer 111 by a mold.

[0042] In order to improve the stability of the bottom layer 111 and the side layer 121, as shown in Figure 6 , the thickness B1 of the bottom layer 111 and the thickness B2 of the side layer 121 are B1=B2, so that the thickness of the heat conducting medium 3 filled between the bottom layer 111 and the side layer 121 is relatively uniform, so as to obtain a more uniform heating state.

[0043] In another embodiment, as shown in Figure 1 and Figure 7 , the baking tray 1 comprises a first disc body 14 and a second disc body 15, the first disc body 14 is sleeved outside the second disc body 15 and is sealingly connected with the second disc body 15 to form the bottom layer 111 and the side layer 121, the heat conducting medium 3 is filled in the bottom layer 111 formed between the first disc body 14 and the second disc body 15, the heating pipe 2 is fixed on the outer bottom surface of the first disc body 14, when the heating pipe 2 generates heat, the heat is transmitted to the bottom layer 111 through the outer bottom surface of the first disc body 14, so that the heat conducting medium 3 in the bottom layer 111 is heated and expands to heat the food in the cooking area 13, and part of the heat is also transmitted to the side layer 121, so that the side layer 121 can be preheated, and the temperature of the heating pipe 2 is transmitted to the bottom layer 111 through the lower bottom surface of the first disc body 14, so that the heat conducting medium 3 in the bottom layer 111 is heated and expands to fill in the side layer 121.

[0044] In order to improve the sealing of the side sandwich layer 121, as shown in Figure 7 The edge of the second disc body 15 is provided with a flange 151, and the first disc body 14 is sleeved on the second disc body 15 from below and upward until the top end of the first disc body 14 abuts against the lower surface of the flange 151, so that the thickness uniformity of the bottom sandwich layer 111 and the side sandwich layer 121 is easily guaranteed, and then the upper end of the first disc body 14 is sealed with the flange 151 by welding or the like, thereby improving the sealing of the side sandwich layer 121; when the first disc body 14 and the second disc body 15 are welded, the first disc body 14 and the second disc body 15 are relatively stable due to the abutment of the top end of the first disc body 14 against the flange 151, so that the welding operation is facilitated.

[0045] In another embodiment, in order to avoid the safety risk caused by the high-pressure environment in the side sandwich layer 121, the top of the side sandwich layer 121 is provided with a gas permeable pressure relief valve, and the gas in the side sandwich layer 121 is discharged through the gas permeable pressure relief valve when the heating pipe 2 is working, so as to avoid the safety risk caused by the high-pressure environment in the side sandwich layer 121, and in the cooling process, the low-temperature air outside can enter the side sandwich layer 121 to accelerate the cooling speed.

[0046] In addition to the above preferred embodiments, the utility model also has other implementation manners, and all other embodiments obtained by the person skilled in the art based on the embodiments in the utility model without creative labor belong to the range of the utility model claimed.

Claims

1. A grill, comprising a grill plate including a bottom wall and a side wall, both of which enclose a cooking area for receiving food, and a heating tube fixed to an outer bottom surface of the bottom wall, characterized in that, The bottom wall and the side wall are respectively provided with a bottom interlayer and a side interlayer in communication, the bottom interlayer is filled with a heat-conducting medium, the heat-conducting medium expands and fills the side interlayer after being heated by the heating pipe, and the volume of the heat-conducting medium in the side interlayer is more than half of the volume of the side interlayer and less than the volume of the side interlayer.

2. The combination grill and oven of claim 1 wherein, The volume of the heat-conducting medium at normal temperature is less than or equal to the volume of the bottom interlayer.

3. The combination grill and oven of claim 1 wherein, The bottom interlayer is provided with a flow guide rib between the upper wall surface and the lower wall surface, the flow guide rib extends outward from the center of the bottom wall and forms a spiral flow channel, and the outlet of the spiral flow channel is located at the edge of the bottom interlayer.

4. The combination grill and oven of claim 3 wherein, The flow guide rib is provided with a plurality of flow guide ribs and forms a plurality of spiral flow channels.

5. The combination grill and oven of claim 4 wherein, The outlets of the spiral flow channels are uniformly distributed at the edge of the bottom interlayer.

6. The combination grill and oven of claim 3 wherein, The width W of the spiral flow channel is greater than the thickness B1 of the bottom interlayer.

7. The combination grill and oven of claim 1 wherein, The thickness B1 of the bottom interlayer is equal to the thickness B2 of the side interlayer.

8. The combination grill and oven of claim 1 wherein, The baking tray comprises a first tray body and a second tray body, the first tray body is sleeved outside the second tray body and is sealingly connected to form the bottom interlayer and the side interlayer, and the heating pipe is fixed to the outer bottom surface of the first tray body.

9. The combination grill and oven of claim 8 wherein, The edge of the second tray body is provided with a flange, and the top end of the first tray body abuts against the lower surface of the flange.

10. The combination grill and oven of claim 1, wherein, The top of the side interlayer is provided with a breathable pressure relief valve.

Images