Heat insulation structure of food roaster

Abstract

The utility model provides a heat insulation structure of a food roaster, which comprises a roasting cavity, a heating device is arranged in the roasting cavity, an outer shell surrounding the roasting cavity is arranged outside the roasting cavity, a heat insulation layer is arranged between the outer shell and the roasting cavity, and a heat insulation space is formed between the heat insulation layer and the roasting cavity. A first heat dissipation space is formed between the heat insulation layer and the outer shell, a first cold air circulation mechanism used for taking away heat in the first heat dissipation space is arranged on the outer shell, and the first cold air circulation mechanism communicates with the external environment and the first heat dissipation space. By means of the structural arrangement, a certain distance is kept between the inner surface of the heat insulation layer and the outer surface of the baking cavity, heat of the baking cavity is transmitted to the heat insulation layer in a heat radiation mode, the heat transmitted to the heat insulation layer is little, further heat dissipation is achieved through the first cold air circulation mechanism, and finally only a small amount of heat is transmitted to the outer shell. A customer does not feel hot when touching the shell with hands, and the experience feeling is good.

Description

Technical Field

[0001] The utility model relates to the technical field of baking appliances, in particular to a heat insulation structure of a food toaster. Background Art

[0002] Most pizza machines on the market at present use gas or charcoal as the heat source. Such pizza machines have the advantage of reaching a temperature above 500 °C, but there is also the problem of inaccurate temperature control. There are also a small number of electric pizza machines. Due to their poor heat insulation effect, the outer shell will overheat during use. In order to solve the problem of overheating of the outer shell, in the prior art, a heat insulation structure is added between the baking cavity and the outer shell of some pizza machines.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN221489740U discloses a pizza machine with a heat preservation function, including a heating cavity with an opening at one end. A heating device is arranged in the heating cavity. A door body for covering the opening is arranged at the end of the heating cavity. A control device for controlling the heating device is arranged on the door body. An insulating layer board surrounding the heating cavity is arranged outside the heating cavity. An insulating space is formed between the insulating layer board and the heating cavity. The insulating space is filled with insulating cotton. An outer shell is arranged outside the insulating layer board. A bottom plate is arranged at the bottom of the outer shell. A mounting plate for installing the heating cavity and the insulating layer board is arranged on the back of the outer shell. Heat dissipation holes are arranged on the outer shell. A heat dissipation fan electrically connected to the control device is arranged on the bottom plate. This utility model realizes heat insulation and heat dissipation of the pizza machine by filling insulating cotton between the heating cavity and the insulating layer board and arranging a heat dissipation fan on the outer shell. However, in fact, the outer shell of this utility model is still relatively hot, and the customer experience will be poor.

[0004] Therefore, for how to further improve the heat insulation and heat dissipation effect of the outer shell of the pizza machine, the prior art still needs to be improved and developed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a heat insulation structure of a food toaster in view of the defects and deficiencies of the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The present utility model provides a heat insulation structure for a food toaster, which includes a baking cavity. A heating device is provided inside the baking cavity, and an outer housing that surrounds the baking cavity is provided outside the baking cavity. A heat insulation layer is provided between the outer housing and the baking cavity. A heat insulation space is formed between the heat insulation layer and the baking cavity, and a first heat dissipation space is formed between the heat insulation layer and the outer housing. A first cold air circulation mechanism for taking away the heat in the first heat dissipation space is provided on the outer housing, and the first cold air circulation mechanism communicates the external environment with the first heat dissipation space. Specifically, a certain distance is maintained between the inner surface of the heat insulation layer and the outer surface of the baking cavity, and a certain distance is also maintained between the outer surface of the heat insulation layer and the inner surface of the outer housing. The baking cavity can be fixedly connected to the heat insulation layer through a support frame, and the heat insulation layer can also be fixedly connected to the outer housing through a support frame. Through the above structural arrangement, a certain distance is maintained between the inner surface of the heat insulation layer and the outer surface of the baking cavity. The heat of the baking cavity is not directly transferred to the heat insulation layer by contact, but is transferred to the heat insulation layer by means of thermal radiation. Less heat is transferred to the heat insulation layer. Similarly, the heat on the heat insulation layer is also transferred to the outer housing by means of thermal radiation. Coupled with the further heat dissipation of the first cold air circulation mechanism, finally only a small amount of heat is transferred to the outer housing, and the customer will not feel the outer housing being scalding hot when touching it with their hands, and the experience will be better.

[0008] According to the above solution, the heat insulation layer includes an inner heat insulation board and an outer heat insulation board, and a high-temperature resistant heat insulation material layer is provided between the inner heat insulation board and the outer heat insulation board. Through the above structural arrangement, the inner heat insulation board and the outer heat insulation board can play a good role in fixing the high-temperature resistant heat insulation material. The inner heat insulation board can also reflect the thermal radiation of the baking cavity, and the high-temperature resistant heat insulation material layer can achieve a good heat insulation effect.

[0009] According to the above solution, the first cold air circulation mechanism includes a first cooling fan, a first air inlet, and a first air outlet. Both the first air inlet and the first air outlet are provided on the outer housing. The first air inlet and the first air outlet are connected through the inside of the outer housing to form a first heat dissipation air duct, and the first cooling fan is provided in the first heat dissipation air duct. Through the above structural arrangement, the cold air in the external environment enters the first heat dissipation space through the first air inlet under the action of the first cooling fan, and the hot air in the first heat dissipation space leaves from the first air outlet to achieve heat dissipation.

[0010] According to the above solution, the first cooling fan is fixed to the inner side of the outer housing and corresponds to the first air inlet.

[0011] According to the above solution, the first air inlet is arranged at the rear side of the rear end of the outer shell, and the first air outlet is arranged on the left and right sides and the upper side of the front end of the outer shell. Through the above structural arrangement, air convection can be achieved, and the hot air in the first heat dissipation space is easily taken out.

[0012] The present utility model further includes a heat-insulating door, the heat-insulating door is hinged to the front end of the outer shell, an opening is formed at the front end of the baking cavity, and when the heat-insulating door is closed, the heat-insulating door covers the opening. Through the above structural arrangement, both the outer shell and the door of the present utility model can achieve heat insulation.

[0013] According to the above solution, the heat-insulating door includes a door frame, a second heat dissipation space is formed inside the door frame, and a second cold air circulation mechanism for taking away the heat in the second heat dissipation space is arranged on the door frame, and the second cold air circulation mechanism communicates the external environment with the second heat dissipation space. Through the above structural arrangement, the cold air circulation mechanism can quickly take away the heat in the second heat dissipation space.

[0014] According to the above solution, the second cold air circulation mechanism includes a second cooling fan, a second air inlet and a second air outlet. Both the second air inlet and the second air outlet are arranged on the door frame. The second air inlet and the second air outlet are internally connected through the door frame to form a second heat dissipation air duct, and the second cooling fan is fixedly arranged in the second heat dissipation air duct. Through the above structural arrangement, when the second cooling fan is controlled to be turned on, the cold air in the external environment enters the second heat dissipation space, and the hot air in the second heat dissipation space leaves through the second air outlet, thereby realizing the heat dissipation of the heat-insulating door.

[0015] According to the above solution, the heat-insulating door further includes a window glass layer. The window glass layer includes an inner glass and an outer glass. A third heat dissipation space is formed between the inner glass and the outer glass. A window hole is arranged on the door frame, and the window glass layer is installed on the window hole through a window support. The third heat dissipation space is communicated with the second heat dissipation space. Through the above structural arrangement, when the second cooling fan works, the hot air in the third heat dissipation space inside the window glass layer can be taken away, thereby realizing the heat dissipation and temperature reduction of the window glass layer.

[0016] According to the above solution, a control unit electrically connected to the heating device is arranged inside the lower end of the heat-insulating door. The air inlet end of the second cooling fan corresponds to the second air inlet, and the air outlet end of the second cooling fan corresponds to the control unit. When specifically arranged, multiple second cooling fans can be arranged according to the need of heat dissipation effect, and multiple second air inlets and multiple second air outlets can be opened. Through the above structural arrangement, when the second cooling fan works, it can dissipate heat and reduce the temperature of the door frame and the window glass layer, and can also dissipate heat and reduce the temperature of the control unit.

[0017] Advantages of the present utility model:

[0018] The inner surface of the heat insulation layer of the present utility model maintains a certain distance from the outer surface of the baking cavity. The heat of the baking cavity is not directly transferred to the heat insulation layer by contact, but is transferred to the heat insulation layer by means of thermal radiation. Less heat is transferred to the heat insulation layer. Similarly, the heat on the heat insulation layer is also transferred to the outer casing by means of thermal radiation. Coupled with the further heat dissipation of the first cold air circulation mechanism, finally only a small amount of heat is transferred to the outer casing, and the customer will not feel hot when touching the outer casing with hands, and the experience will be better. Description of the drawings

[0019] Figure 1 is a schematic diagram of the external structure of the present utility model;

[0020] Figure 2 is a schematic sectional structure diagram of the present utility model;

[0021] Figure 3 is a schematic diagram of the external structure of the heat insulation door of the present utility model;

[0022] Figure 4 is Figure 3 a cross-sectional view of the A-A section of;

[0023] Figure 5 is a schematic diagram of the internal structure of the heat insulation door of the present utility model.

[0024] In the figure: 1, baking cavity; 2, outer casing; 3, heat insulation layer; 4, heat insulation space; 5, first heat dissipation space; 6, first cooling fan; 7, door frame; 8, second heat dissipation space; 9, second cooling fan; 10, window glass layer; 11, window support; 12, control unit; 21, first air inlet; 22, first air outlet; 31, inner heat insulation plate; 32, outer heat insulation plate; 33, high-temperature heat insulation material layer; 71, inner door frame; 72, outer door frame; 73, second air inlet; 74, second air outlet; 101, inner glass; 102, outer glass; 103, third heat dissipation space. Specific embodiments

[0025] The technical solutions of the present utility model will be described below in conjunction with the drawings and embodiments.

[0026] Embodiment 1

[0027] As Figure 1-2As shown, the arrow direction is the air flow direction. The present utility model provides a heat insulation structure for a food toaster, which includes a baking cavity 1. The baking cavity 1 includes a top, a bottom, left and right sides, and a back. A heating device (not shown in the figure) is provided inside the baking cavity 1. An outer housing 2 that surrounds it is provided outside the baking cavity 1. A heat insulation layer 3 is provided between the outer housing 2 and the baking cavity 1, and the heat insulation layer 3 also surrounds the baking cavity 1. A heat insulation space 4 is formed between the heat insulation layer 3 and the baking cavity 1. A first heat dissipation space 5 is formed between the heat insulation layer 3 and the outer housing 2. The outer housing 2 is provided with a first cold air circulation mechanism for taking away the heat in the first heat dissipation space 5. The first cold air circulation mechanism communicates the external environment with the first heat dissipation space 5. Specifically, the inner surface of the heat insulation layer 3 and the outer surface of the baking cavity 1 maintain a certain distance, and the outer surface of the heat insulation layer 3 and the inner surface of the outer housing 2 also maintain a certain distance. The baking cavity 1 can be fixedly connected to the heat insulation layer 3 through a support frame, and the heat insulation layer 3 can also be fixedly connected to the outer housing 2 through a support frame. Through the above structural arrangement, the inner surface of the heat insulation layer 3 and the outer surface of the baking cavity 1 maintain a certain distance, and the heat of the baking cavity 1 is not directly transferred to the heat insulation layer 3 by contact, but is transferred to the heat insulation layer 3 by means of thermal radiation. Less heat is transferred to the heat insulation layer 3. Similarly, the heat on the heat insulation layer 3 is also transferred to the outer housing 2 by means of thermal radiation. Coupled with the further heat dissipation of the first cold air circulation mechanism, finally only a small amount of heat is transferred to the outer housing 2, and the customer will not feel hot when touching the outer housing with their hands, and the experience will be better.

[0028] Furthermore, the heat insulation layer 3 includes an inner heat insulation board 31 and an outer heat insulation board 32. A high-temperature resistant heat insulation material layer 33 is provided between the inner heat insulation board 31 and the outer heat insulation board 32. Specifically, during production, a high-temperature resistant heat insulation material is used to fill the space between the inner heat insulation board 31 and the outer heat insulation board 32, thereby forming the high-temperature resistant heat insulation material layer 33. Through the above structural arrangement, the inner heat insulation board 31 and the outer heat insulation board 32 can play a good fixing role for the high-temperature resistant heat insulation material. The inner heat insulation board 31 can also reflect the thermal radiation of the baking cavity 1, and the high-temperature resistant heat insulation material layer 33 can achieve a good heat insulation effect.

[0029] Furthermore, the first cold air circulation mechanism includes a first cooling fan 6, a first air inlet 21, and a first air outlet 22. The first air inlet 21 is provided at the rear side of the rear end of the outer housing 2, and the first air outlet 22 is provided on the left and right sides and the upper side of the front end of the outer housing 2. The first air inlet 21 and the first air outlet 22 are connected through the inside of the outer housing 2 to form a first heat dissipation air duct, and the first cooling fan 6 is provided in the first heat dissipation air duct. The first cooling fan 6 is fixed to the inner side of the outer housing 2 and corresponds to the first air inlet 21. Through the above structural arrangement, the cold air in the external environment enters the first heat dissipation space 5 through the first air inlet 21 under the action of the first cooling fan 6, and the hot air in the first heat dissipation space 5 leaves from the first air outlet 22, realizing heat dissipation.

[0030] As Figure 3-5 shown, the present utility model further includes a heat insulation door, which is hinged to the front end of the outer housing 2. An opening is formed at the front end of the baking cavity 1. When the heat insulation door is closed, the heat insulation door covers the opening. Through the above structural arrangement, both the outer housing 2 and the door of the present utility model can achieve heat insulation.

[0031] Furthermore, the heat insulation door includes a door frame 7, and the door frame 7 includes an inner door frame 71 and an outer door frame 72. The inner door frame 71 and the outer door frame 72 are fixedly assembled to form a second heat dissipation space 8. A second cold air circulation mechanism for taking away the heat in the second heat dissipation space 8 is provided on the door frame 7, and the second cold air circulation mechanism communicates with the external environment and the second heat dissipation space 8. Through the above structural arrangement, the second cold air circulation structure can take away the hot air in the second heat dissipation space 8, reducing the heat transferred to the outer door frame 72.

[0032] Furthermore, the second cold air circulation mechanism includes a second cooling fan 9, a second air inlet 73, and a second air outlet 74. Both the second air inlet 73 and the second air outlet 74 are provided on the door frame 7. The second air inlet 73 and the second air outlet 74 are connected through the inside of the door frame 7 to form a second heat dissipation air duct, and the second cooling fan 9 is fixedly arranged in the second heat dissipation air duct. Through the above structural arrangement, when the second cooling fan 9 is controlled to be turned on, the cold air in the external environment enters the second heat dissipation space 8, and the hot air in the second heat dissipation space 8 leaves through the second air outlet, thereby realizing the heat dissipation of the heat insulation door.

[0033] Furthermore, the heat-insulating door further includes a window glass layer 10, which includes an inner glass 101 and an outer glass 102. A third heat dissipation space 103 is formed between the inner glass 101 and the outer glass 102. Window holes are provided on both the inner door frame 71 and the outer door frame 72. The inner glass 101 and the outer glass 102 are both installed on the window holes of the inner door frame 71 and the outer door frame 72 respectively through window brackets 11. The third heat dissipation space 103 communicates with the second heat dissipation space 8. Through the above structural arrangement, when the second cooling fan 9 works, it can take away the hot air in the third heat dissipation space 103 in the window glass layer 10, thereby realizing the heat dissipation and temperature reduction of the window glass layer 10.

[0034] Furthermore, a control unit 12 electrically connected to the heating device is provided inside the lower end of the heat-insulating door. The window hole is provided in the middle of the door frame 7. The air inlet end of the second cooling fan 9 corresponds to the second air inlet 73, and the air outlet end of the second cooling fan 9 corresponds to the control unit 12. Specifically, as Figure 5 shown, the second air inlet 73 is provided on the lower right side of the door frame 7, the second air outlet 74 is provided on the right side of the door frame 7, the control unit 12 is fixed to the left side inside the door frame 7, and the second cooling fan 9 blows towards the control unit 12. Through the above structural arrangement, when the second cooling fan 9 works, it can dissipate heat from the door frame 7 and the window glass layer 10, and can also dissipate heat from the control unit 12.

[0035] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. Heat insulation structure of a food toaster, comprising a baking cavity (1), a heating device is arranged in the baking cavity (1), an outer housing (2) surrounding it is arranged outside the baking cavity (1), and a heat insulation layer (3) is arranged between the outer housing (2) and the baking cavity (1). It is characterized in that A heat insulation space (4) is formed between the heat insulation layer (3) and the baking cavity (1), a first heat dissipation space (5) is formed between the heat insulation layer (3) and the outer housing (2), a first cold air circulation mechanism for taking away the heat in the first heat dissipation space (5) is arranged on the outer housing (2), and the first cold air circulation mechanism communicates the external environment with the first heat dissipation space (5).

2. The heat insulation structure of the food toaster according to claim 1, wherein, The heat insulation layer (3) comprises an inner heat insulation plate (31) and an outer heat insulation plate (32), and a high-temperature heat insulation material layer (33) is arranged between the inner heat insulation plate (31) and the outer heat insulation plate (32).

3. The heat insulation structure of the food toaster according to claim 1, characterized in that, The first cold air circulation mechanism comprises a first cooling fan (6), a first air inlet (21) and a first air outlet (22), the first air inlet (21) and the first air outlet (22) are both arranged on the outer housing (2), the first air inlet (21) and the first air outlet (22) are internally connected through the outer housing (2) to form a first heat dissipation air duct, and the first cooling fan (6) is arranged in the first heat dissipation air duct.

4. The heat insulation structure of the food roaster according to claim 3, characterized in that, The first cooling fan (6) is fixed to the inner side of the outer housing (2), and the first cooling fan (6) corresponds to the first air inlet (21).

5. The heat insulation structure of the food toaster according to any one of claims 3-4, characterized in that The first air inlet (21) is arranged at the rear side of the rear end of the outer housing (2), and the first air outlet (22) is arranged on the left and right sides and the upper side of the front end of the outer housing (2).

6. The heat insulation structure of the food roaster according to claim 1, characterized in that, It further comprises a heat insulation door, the heat insulation door is hinged to the front end of the outer housing (2), an opening is formed at the front end of the baking cavity (1), and when the heat insulation door is closed, the heat insulation door covers the opening.

7. The heat insulation structure of the food toaster according to claim 6, characterized in that, The heat insulation door comprises a door frame (7), a second heat dissipation space (8) is formed in the door frame (7), a second cold air circulation mechanism for taking away the heat in the second heat dissipation space (8) is arranged on the door frame (7), and the second cold air circulation mechanism communicates the external environment with the second heat dissipation space (8).

8. The heat insulation structure of the food toaster according to claim 7, characterized in that, The second cold air circulation mechanism comprises a second cooling fan (9), a second air inlet (73) and a second air outlet (74), the second air inlet (73) and the second air outlet (74) are both arranged on the door frame (7), the second air inlet (73) and the second air outlet (74) are internally connected through the door frame (7) to form a second heat dissipation air duct, and the second cooling fan (9) is fixedly arranged in the second heat dissipation air duct.

9. The heat insulation structure of the food roaster according to claim 8, characterized in that, The heat-insulating door further includes a window glass layer (10), the window glass layer (10) includes an inner glass (101) and an outer glass (102), a third heat dissipation space (103) is formed between the inner glass (101) and the outer glass (102), a window hole is provided on the door frame (7), and the window glass layer (10) is installed on the window hole through a window bracket (11), and the third heat dissipation space (103) is communicated with the second heat dissipation space (8).

10. The heat insulation structure of the food toaster according to claim 9, characterized in that, A control unit (12) electrically connected to the heating device is provided inside the lower end of the heat-insulating door, the air inlet end of the second cooling fan (9) corresponds to the second air inlet (73), and the air outlet end of the second cooling fan (9) corresponds to the control unit (12).

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