An oven

Abstract

The present invention relates to an oven, comprising an inner tank, an outer shell, an air guide plate and a heat dissipation fan, wherein the inner tank is arranged in the outer shell and a gap is formed between the inner wall of the outer shell, the air guide plate is arranged at the top of the outer shell and a guide channel is formed between the top plate of the outer shell, an air inlet connected to the guide channel is opened at the rear of the air guide plate, and the air outlet of the guide channel extends to the front side of the outer shell, the heat dissipation fan is arranged on the air guide plate and provides power for cold air to enter the guide channel, and also comprises a guide pipe, the first port of the guide pipe is connected to the guide channel, and the second port of the guide pipe extends to the gap between the bottom of the inner tank and the bottom plate of the outer shell. The present invention is provided with a guide pipe that can introduce the cold air in the guide channel at the top of the oven into the bottom of the oven, the guide pipe introduces the cold air into the gap between the bottom of the inner tank and the bottom plate of the outer shell, and can take away and discharge the hot air there, thereby improving the heat dissipation effect of the bottom of the oven, reducing the temperature of the bottom of the oven, and thus avoiding the deformation of the cabinet due to heat and improving the service life of the cabinet.

Description

Technical Field

[0001] The invention relates to an oven, in particular to an oven capable of preventing a cabinet from being deformed by heat in an embedded installation state. Background Art

[0002] At present, built-in ovens are popular in the market because of their space saving and beautiful appearance. When the oven is baking food, the temperature of the oven liner can reach 300℃. Traditional electric ovens tend to accumulate heat in the box and it is difficult to dissipate it, which accelerates the aging of the oven circuit and electronic components, shortens the service life of the oven, and even causes the liner of the oven to rupture, causing danger.

[0003] In order to solve the above problems, the Chinese utility model patent "An electric oven with a heat dissipation structure" (application number: CN201120306724.0) with the authorization announcement number CN2021786U discloses a structure, which includes a box body with a door body, a heat dissipation box is arranged on the top of the box body, the heat dissipation box has an air outlet exposed on the front end surface of the box body, the side wall of the heat dissipation box also has an air inlet for external hot air to enter the heat dissipation box, the top wall of the box body is provided with an air guide port connecting the box body and the heat dissipation box, and the heat dissipation box is also installed with a heat dissipation fan for discharging the hot air entering the heat dissipation box to the air outlet. With the above structure, the hot air generated outside the box body enters the heat dissipation box through the introduction of the heat dissipation fan and is forced to be discharged to the air outlet of the heat dissipation box to the front of the cabinet in which the electric oven is embedded, which accelerates the convection of the air outside the box body, so that the heat in the cabinet in which the electric oven is embedded will not accumulate in large quantities, and to a certain extent improve the stability and safety of the operation of the electric oven.

[0004] Although the above structure has a heat dissipation effect, since the heat dissipation structure is arranged at the top of the oven, it mainly dissipates the hot air at the top of the oven, and it is difficult to achieve a significant heat dissipation effect for the hot air at the bottom of the oven. In particular, in order to improve the heating uniformity, existing ovens often have heating pipes at the top and bottom of the oven, so that the temperature of the oven bottom plate in contact with the cabinet can still reach 150°C. However, many cabinets are made of composite materials with poor heat resistance. They are easily deformed by heat when exposed to high temperatures for a long time, which affects the appearance and service life of the cabinets. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an oven that can introduce cold air from the top of the oven into the bottom of the oven to improve the heat dissipation effect of the bottom of the oven, thereby avoiding deformation of the cabinet due to heat and increasing the service life of the cabinet.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an oven, including an inner pot, an outer shell, an air guide plate and a heat dissipation fan, the inner pot is arranged in the outer shell and a gap is formed between the inner wall of the outer shell, the air guide plate is arranged at the top of the outer shell and a guide channel is formed between the top plate of the outer shell, the rear part of the air guide plate is provided with an air inlet connected to the guide channel, the air outlet of the guide channel extends to the front side of the outer shell, the heat dissipation fan is arranged on the air guide plate and provides power for cold air to enter the guide channel, and is characterized in that: it also includes a guide pipe, the first port of the guide pipe is connected to the guide channel, and the second port of the guide pipe extends to the gap between the bottom of the inner pot and the bottom plate of the outer shell.

[0007] As an improvement, a regulating mechanism capable of controlling the air intake size is provided at the first port of the guide tube. Since different temperatures are required for baking different foods, the temperature at the bottom of the oven will be different accordingly. By providing the above structure, the air intake size of the guide tube can be adjusted according to the specific baking conditions.

[0008] Preferably, the adjustment mechanism includes a baffle, a rack, a gear and a motor. A socket is provided on the top wall of the air guide tube. The baffle passes through the socket and is arranged on the air guide tube so as to be movable up and down. The lower end of the rack is connected to the baffle. The gear meshes with the rack for transmission. The motor is arranged above the air guide tube and the output shaft is connected to the gear. The motor drives the baffle to move up and down, so as to adjust the coverage of the baffle on the cross section of the air guide tube, thereby adjusting the air intake volume.

[0009] Further improvement, the bottom plate of the shell is provided with a guide plate with a middle part arched backward, and the front side of the bottom plate of the shell is provided with a heat dissipation port arranged opposite to the guide plate. Since the air outlet port of the guide pipe is smaller than the overall width of the oven, the wind blown into the bottom of the oven is very uneven after being dispersed, with a part being directly discharged from the heat dissipation port, and the other part interfering with the discharge of hot air, resulting in hot air always being retained at the bottom of the oven, affecting the heat dissipation effect. The above structure can guide the wind entering the bottom of the oven, so that the cold air can expel the hot air to the heat dissipation port over a large area in the direction of the entire width of the oven, which is conducive to improving the heat dissipation effect.

[0010] Preferably, the guide plate is located at the middle rear part of the shell bottom plate, the first end of the guide plate is connected to the rear side wall of the guide tube, and the second end of the guide plate extends to the edge of the shell bottom plate arranged opposite to the second port of the guide tube.

[0011] Further improvement, a plurality of guide plates are arranged at intervals on the front side wall of the guide plate, which can guide the hot air on the front side of the guide plate to the heat dissipation port. The guide plate is formed into an arc-shaped structure with a middle portion arched toward the second port of the guide tube, the first side of the guide plate is connected to the front side wall of the guide plate, the second side of the guide plate extends in a direction opposite to the second port of the guide tube, and the distance between the guide plate and the guide plate gradually increases from the first side to the second side. This structure can play a better role in guiding the cold air, drive the strong hot air to the heat dissipation port for discharge, and improve the heat dissipation effect.

[0012] As a further improvement, the guide plate is provided with an ejection hole capable of guiding the hot air at the rear side of the guide plate to the front side of the guide plate, and the ejection hole is hidden at the rear side of the guide plate. When cold air blows through the guide plate on the guide plate, the gas flow rate at the ejection hole behind the guide plate is relatively high and the pressure is relatively low. The hot air behind the guide plate will flow to the front of the guide plate under the action of the pressure difference and then be discharged from the heat dissipation port, so that all the hot air at the bottom of the oven can be effectively discharged, thereby improving the heat dissipation effect.

[0013] In the above schemes, the heat dissipation fan is a centrifugal fan, and accordingly, the air guide plate has an air inlet area, an air guide area and an air outlet area, and an installation cavity for installing the centrifugal fan is formed between the air inlet area and the top plate of the shell, the air inlet is opened at the top of the air inlet area of ​​the air guide plate, the width of the air guide area gradually increases along the air outlet direction, a circuit board is arranged on the air outlet area, and the air outlet of the air outlet area is opened on the front side wall of the shell. The centrifugal fan in the present invention is mainly used to dissipate heat from the top of the oven, so as to prevent the temperature here from being too high and affecting the safety and service life of the circuit board.

[0014] Preferably, an air outlet port connected to the first port of the air guide pipe is formed on the side wall of the air guide plate corresponding to the air guide area, and the air guide pipe is formed as a flat pipe matching the width of the air outlet port. Since the air flow rate in the air guide area is the highest, opening the air inlet of the air guide pipe there is conducive to the rapid delivery of cold air.

[0015] Compared with the prior art, the advantages of the present invention are: the top of the oven of the present invention is provided with a guide channel and a heat dissipation fan which can dissipate heat to the top area of ​​the oven; the present invention is also provided with a guide pipe which can introduce the cold air in the guide channel into the bottom of the oven; the guide pipe introduces the cold air into the gap between the bottom of the inner tank and the bottom plate of the outer shell, and can take away and discharge the hot air there, thereby improving the heat dissipation effect of the bottom of the oven, reducing the temperature of the bottom of the oven, and thus avoiding deformation of the cabinet due to heat and increasing the service life of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the middle adjustment mechanism;

[0018] Figure 3 Schematic diagram of the assembly structure of the guide plate and the bottom plate in an embodiment of the present invention;

[0019] Figure 4 Schematic diagram of the partial structure of the guide plate in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 4 As shown, the oven of this embodiment includes an inner pot 1, an outer shell 2, an air guide plate 3, a heat dissipation fan 4 and a guide pipe 5. The inner pot 1 is arranged in the outer shell 2 and a gap 10 is formed between the inner wall of the outer shell 2. The air guide plate 3 is arranged on the top of the outer shell 2 and a guide channel 30 is formed between the top plate 21 of the outer shell 2. An air inlet 31 connected to the guide channel 30 is opened at the rear of the air guide plate 3. The air outlet of the guide channel 30 extends to the front side of the outer shell 2. The heat dissipation fan 4 is arranged on the air guide plate 3 and provides power for cold air to enter the guide channel 30. The first port 51 of the guide pipe 5 is connected to the guide channel 30, and the second port 52 of the guide pipe 5 extends to the gap 10 between the bottom of the inner pot 1 and the bottom plate 22 of the outer shell 2.

[0022] In this embodiment, an adjusting mechanism 6 capable of controlling the size of the air intake is provided at the first port 51 of the air guide tube 5. Since the temperature required for baking different foods is different, the temperature at the bottom of the oven will also be different accordingly. By providing the above structure, the size of the air intake of the air guide tube can be adjusted according to the specific conditions of baking. The adjusting mechanism 6 includes a baffle 61, a rack 62, a gear 63 and a motor 64. A socket 53 is provided on the top wall of the air guide tube 5. The baffle 61 is arranged on the air guide tube 5 so as to be movable up and down through the socket 53. The lower end of the rack 62 is connected to the baffle 61. The gear 63 is meshed with the rack 62 for transmission. The motor 64 is arranged above the air guide tube 5 through a bracket 65 and the output shaft is connected to the gear 63. The baffle 61 is driven up and down by the motor 64 to adjust the coverage of the cross section of the air guide tube 5 by the baffle 61, thereby adjusting the air intake volume.

[0023] In this embodiment, a guide plate 7 with a rearward arch in the middle is provided on the bottom plate 22 of the housing 2, and a heat dissipation port 23 arranged opposite to the guide plate 7 is provided on the front side of the bottom plate 22 of the housing 2. Since the second port 52 (air outlet port) of the guide tube 5 is smaller than the overall width of the oven, the wind blown into the bottom of the oven is very uneven after being dispersed, and a part of it is directly discharged from the heat dissipation port 23, and the other part will interfere with the discharge of hot air, resulting in hot air always being retained at the bottom of the oven, affecting the heat dissipation effect. The above structure can guide the wind entering the bottom of the oven, so that the cold air can expel the hot air to the heat dissipation port 23 over a large area in the direction of the entire width of the oven, which is conducive to improving the heat dissipation effect. The guide plate 7 is located in the middle and rear part of the bottom plate 22 of the housing 2, the first end of the guide plate 7 is connected to the rear side wall of the guide tube 5, and the second end of the guide plate 7 extends to the edge of the bottom plate 22 of the housing 2 arranged opposite to the second port 52 of the guide tube 5. A plurality of guide plates 71 capable of guiding the hot air on the front side of the guide plate 7 to the heat dissipation port 23 are arranged at intervals on the front side wall of the guide plate 7. The guide plate 71 is formed into an arc-shaped structure with a central portion arched toward the second port 52 of the guide tube 5. The first side edge 711 of the guide plate 71 is connected to the front side wall of the guide plate 7. The second side edge 712 of the guide plate 71 extends in a direction opposite to the second port 52 of the guide tube 5. Moreover, the distance between the guide plate 71 and the guide plate 7 gradually increases from the first side edge 711 to the second side edge 712. This structure can play a better role in guiding the cold air, driving the strong hot air to the heat dissipation port 23 for discharge, and improving the heat dissipation effect. The guide plate 7 is also provided with an ejection hole 72 capable of guiding the hot air on the rear side of the guide plate 7 to the front side of the guide plate 7. The ejection hole 72 is hidden on the rear side of the guide plate 71. When cold air blows through the guide plate 71 on the guide plate 7, the gas flow rate at the ejection hole 72 behind the guide plate 71 is relatively large and the pressure is relatively low. The hot air behind the guide plate 7 will flow to the front of the guide plate 7 under the action of the pressure difference, and then be discharged from the heat dissipation port 23, so that all the hot air at the bottom of the oven can be effectively discharged, thereby improving the heat dissipation effect.

[0024] In this embodiment, the heat dissipation fan 4 is a centrifugal fan. Accordingly, the air guide plate 3 has an air inlet area 33, an air guide area 34 and an air outlet area 35. An installation cavity for installing the centrifugal fan is formed between the air inlet area 33 and the top plate 21 of the housing 2. The air inlet 31 is opened at the top of the air inlet area 33 of the air guide plate 3. The width of the air guide area 34 gradually increases along the air outlet direction. The circuit board 8 is arranged on the air outlet area 35. The air outlet of the air outlet area 35 is opened on the front side wall of the housing 2. The centrifugal fan in this embodiment is mainly used to dissipate heat from the top of the oven, so as to prevent the temperature here from being too high and affecting the safety and service life of the circuit board 8. The air outlet port 36 connected to the first port 51 of the guide pipe 5 is opened on the side wall of the air guide plate 3 corresponding to the air guide area 34. The guide pipe 5 is formed into a flat pipe matching the width of the air outlet port 36. Since the gas flow rate in the air guide area 34 is the largest, opening the air inlet of the guide pipe 5 here is conducive to the rapid delivery of cold air.

[0025] The top of the oven of this embodiment is provided with a guide channel 30 and a heat dissipation fan 4 which can dissipate heat to the top area of ​​the oven. This embodiment is also provided with a guide pipe 5 which can introduce the cold air in the guide channel 30 into the bottom of the oven. The guide pipe 5 introduces the cold air into the gap 10 between the bottom of the inner tank 1 and the bottom plate 22 of the outer shell 2, and can take away and discharge the hot air here, thereby improving the heat dissipation effect of the bottom of the oven, reducing the temperature of the bottom of the oven, and thus avoiding deformation of the cabinet due to heat and increasing the service life of the cabinet.

Claims

1. An oven, comprising an inner container (1), an outer shell (2), an air guide plate (3) and a heat dissipation fan (4), wherein the inner container (1) is arranged in the outer shell (2) and a gap (10) is formed between the inner container and the inner wall of the outer shell (2), the air guide plate (3) is arranged on the top of the outer shell (2) and a guide channel (30) is formed between the inner container and the top plate (21) of the outer shell (2), an air inlet (31) connected to the guide channel (30) is opened at the rear of the air guide plate (3), and an air outlet of the guide channel (30) extends to the front side of the outer shell (2), the heat dissipation fan (4) is arranged on the air guide plate (3) and provides power for cold air to enter the guide channel (30), and the characteristics are: It also comprises a flow guide tube (5), a first port (51) of the flow guide tube (5) being in communication with the flow guide channel (30), and a second port (52) of the flow guide tube (5) extending into a gap (10) between the bottom of the inner container (1) and the bottom plate (22) of the outer shell (2); An adjusting mechanism (6) capable of controlling the size of the air intake is provided at the first port (51) of the air guide tube (5); the adjusting mechanism (6) comprises a baffle (61), a rack (62), a gear (63) and a motor (64); a socket (53) is provided on the top wall of the air guide tube (5); the baffle (61) passes through the socket (53) and is arranged on the air guide tube (5) so as to be movable up and down; the lower end of the rack (62) is connected to the baffle (61); the gear (63) and the rack (62) are meshed for transmission; the motor (64) is arranged above the air guide tube (5) and the output shaft is connected to the gear (63); A guide plate (7) with a middle portion arched backwards is arranged on the bottom plate (22) of the housing (2), and a heat dissipation port (23) arranged opposite to the guide plate (7) is opened on the front side of the bottom plate (22) of the housing (2); a plurality of guide plates (71) capable of guiding hot air on the front side of the guide plate (7) to the heat dissipation port (23) are arranged at intervals on the front side wall of the guide plate (7); the guide plate (71) is formed into an arc-shaped structure with a middle portion arched toward the second port (52) of the guide tube (5); a first side edge (711) of the guide plate (71) is connected to the front side wall of the guide plate (7), and a second side edge (712) of the guide plate (71) extends in a direction opposite to the second port (52) of the guide tube (5), and the distance between the guide plate (71) and the guide plate (7) gradually increases from the first side edge (711) to the second side edge (712).

2. The oven according to claim 1, characterized in that: The guide plate (7) is located at the middle rear part of the bottom plate (22) of the outer shell (2); the first end of the guide plate (7) is connected to the rear side wall of the guide tube (5); the second end of the guide plate (7) extends to an edge of the bottom plate (22) of the outer shell (2) arranged opposite to the second port (52) of the guide tube (5).

3. The oven according to claim 1, characterized in that: The guide plate (7) is also provided with an ejection hole (72) capable of guiding hot air at the rear side of the guide plate (7) to the front side of the guide plate (7); the ejection hole (72) is hidden at the rear side of the guide piece (71).

4. The oven according to any one of claims 1 to 3, characterized in that: The heat dissipation fan (4) is a centrifugal fan. Accordingly, the air guide plate (3) has an air inlet area (33), an air guide area (34) and an air outlet area (35). An installation cavity for installing the centrifugal fan is formed between the air inlet area (33) and the top plate (21) of the housing (2). The air inlet (31) is opened at the top of the air inlet area (33) of the air guide plate (3). The width of the air guide area (34) gradually increases along the air outlet direction. A circuit board (8) is arranged on the air outlet area (35). The air outlet of the air outlet area (35) is opened on the front side wall of the housing (2).

5. The oven according to claim 4, characterized in that: An air outlet port (36) connected to the first port (51) of the air guide pipe (5) is formed on the side wall of the air guide plate (3) corresponding to the air guide area (34), and the air guide pipe (5) is formed into a flat pipe with a width matching that of the air outlet port (36).

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