OTR microwave oven

Abstract

The utility model provides an OTR microwave oven which comprises a cavity, a smoke suction opening is formed in the lower portion of the cavity, an electrical chamber is formed in one side of the cavity, a driving assembly is arranged on the rear side of the top of the cavity, a smoke suction air channel is formed between the inlet end of the driving assembly and the smoke suction opening, and a second partition plate is arranged at the outlet end of the driving assembly. The flue is used for forming a smoke exhaust duct and conveying gas to the front side; a first partition plate is arranged on the front side of the top of the cavity, and the first partition plate is vertically placed, located on the side, away from the electrical chamber, of the second partition plate and used for forming a cooling air channel so as to convey air into a smoke suction air channel located on the side, away from the electrical chamber, of the cavity. According to the range hood, the air inlet amount of external air can be further increased by arranging the first partition plate, so that the cooling effect of cooling air on lampblack is improved under the suction action of the first fan and the second fan and the action of the third fan, and the temperature of waste gas exhausted into the atmosphere is prevented from being too high.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an OTR microwave oven. Background Art

[0002] As a kitchen appliance that combines cooking and ventilation, the OTR microwave oven can further improve the utilization rate of kitchen space and is favored by more and more consumers.

[0003] An OTR (over the range, located above the stove) microwave oven refers to a microwave cooking device with an oil fume extraction structure. Its structure is more complex than that of a single-function microwave oven, and it has higher requirements for the layout of components and heat dissipation. To this end, the Chinese patent application number 202320050913.9 provides an OTR microwave oven, in which cooling air enters the electrical room through the air inlet and cools the electrical components inside it, and is then sucked in by the first fan and discharged through the first exhaust port. The oil fume enters through the smoke port and passes through the smoke duct, and is then sucked in by the first fan, and then discharged through the first exhaust port. Both the cooling air and the oil fume are discharged from the first exhaust port, so the cooling air can cool the oil fume to prevent the exhaust gas from being too hot. However, the high-temperature smoke in the smoke duct on the side away from the electrical room will surround the periphery of the cavity, resulting in poor heat dissipation of the microwave oven and even uneven temperature distribution of the microwave oven.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The problem solved by the utility model is that the structure of the existing OTR microwave oven is unreasonable, resulting in high exhaust gas temperature and even uneven temperature distribution in the cavity of the microwave oven.

[0006] In order to solve the above problems, the present invention provides an OTR microwave oven, comprising a cavity, a smoking port is arranged at the bottom of the cavity, an electrical room is formed on one side of the cavity, a driving assembly is arranged on the top rear side of the cavity, a smoking duct is formed between the inlet end of the driving assembly and the smoking port, a second partition is arranged at the outlet end of the driving assembly, which is used to form a smoke exhaust duct and transport gas to the front side; a first partition is arranged on the top front side of the cavity, the first partition is placed vertically and is located on the side of the second partition away from the electrical room, which is used to form a cooling duct, thereby transporting air to the smoking duct located on the side of the cavity away from the electrical room.

[0007] This setting can introduce outside air into the smoke duct formed on the side of the cavity away from the electrical room, thereby dissipating the heat of the oil smoke in the smoke exhaust duct and preventing the exhaust gas discharged into the atmosphere from being too hot; at the same time, it reduces the impact of high-temperature smoke on the heat dissipation of the cavity, and the operation of the microwave oven is stable and reliable.

[0008] Preferably, the cavity includes a front side panel, which is provided with a first air inlet and a first exhaust port. The first air inlet is connected to the cooling air duct, and the first exhaust port is located on a side of the first air inlet away from the first partition and is connected to the smoke exhaust duct. This arrangement can introduce external air into the smoke exhaust duct through the cooling air duct, and then be sucked into the smoke exhaust duct by the drive assembly and discharged outward, thereby achieving good heat dissipation, a simple structure, and an aesthetically pleasing appearance.

[0009] Preferably, the drive assembly includes a first fan and a second fan, the inlet ends of which face opposite directions and form the smoke duct with the smoke outlet. The second partition is provided with a vertical baffle, which is located between the first and second fans and extends along the direction of the exhaust airflow of the smoke exhaust duct. This arrangement divides the second partition into two independent areas, preventing the exhaust airflows generated by the first and second fans from interfering with each other, resulting in low operating power and noise, while also improving overall mechanical strength.

[0010] Preferably, the inlet end of the second fan is connected to the electrical room, a horizontally placed mounting plate is provided in the electrical room, a first cooling air duct is formed above the mounting plate, a filter plate is provided inside the first cooling air duct, and the filter plate is fixedly assembled on the side of the second partition.

[0011] This arrangement can prevent the filter plate from blocking the airflow in the first cooling air duct, allowing external air to flow more smoothly in the first cooling air duct, thereby fully utilizing the internal space of the microwave oven.

[0012] Preferably, a second cooling air duct is formed below the mounting plate for conveying outside air to the smoking air duct; a third fan and a magnetron are arranged in the second cooling air duct, and the magnetron is located on the air supply path of the third fan.

[0013] This setting can divide the cooling air into two paths. The first cooling air duct dissipates heat to the electrical components in the upper space, and then is sucked in by the second fan. The second cooling air duct dissipates heat to the electrical components in the lower space, and then is mixed with the oil smoke in the exhaust duct and sucked in by the second fan, preventing the exhaust gas discharged into the atmosphere from being too hot.

[0014] Preferably, the cavity is provided with an air inlet mesh on one side near the electrical room, and an air outlet mesh is provided on the sidewall of the other side of the cavity, the air outlet mesh communicating with the smoke duct. This arrangement enables the third fan to generate a high wind pressure within the electrical room, thereby allowing some air to enter the cavity through the air inlet mesh. The first baffle provided on the other side of the cavity significantly reduces the amount of smoke flowing through the air outlet mesh, causing the flowing smoke to draw air from the air outlet mesh, thereby facilitating the outflow of gas from the cavity through the air outlet mesh.

[0015] Preferably, the cavity includes a cavity top plate, the cavity top plate is provided with an air outlet, and an air guide plate is provided on the side of the air outlet, the air guide plate is located below the second partition plate, and the second partition plate, the air guide plate, and the cavity top plate together enclose an exhaust channel, and the exhaust channel is connected to the inlet end of the drive assembly. This arrangement further increases the air outlet area of ​​the cavity, allowing oil smoke, water vapor, etc. in the cavity to be discharged from different parts, preventing the accumulation of oil smoke and water vapor in the cavity, and improving the heat dissipation effect.

[0016] Preferably, a third partition extending vertically is provided between the second cooling air duct and the exhaust air duct, and the third partition is provided with mesh holes. This arrangement can reduce the ingress of oil smoke into the electrical room, thereby providing a certain degree of isolation for the oil smoke; the air blown by the third fan can also smoothly enter the rear exhaust air duct, thereby dissipating the heat of the oil smoke.

[0017] Preferably, a fourth partition extending vertically is provided between the first cooling air duct and the smoke duct. The fourth partition is provided with a second mesh and is positioned adjacent to the inlet end of the second fan. This arrangement can reduce the ingress of oil smoke into the electrical compartment, thereby providing a certain degree of isolation for the oil smoke and improving the operational stability of the OTR microwave oven.

[0018] Compared with the prior art, the OTR microwave oven described in the present invention has the following beneficial effects: 1) By setting the first partition, the air intake of the outside air can be further increased, so that the cooling air increases the heat dissipation effect of the components in the electrical room under the suction action of the first fan, the second fan and the action of the third fan, and at the same time the oil smoke is also dissipated to prevent the exhaust gas temperature discharged into the atmosphere from being too high; 2) by dividing the second partition into two independent parts, the air flow generated by the first fan and the second fan will not affect each other, the operating power is low and the noise is small; 3) the structure is compact and the equipment operation stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a first perspective view of the OTR microwave oven according to an embodiment of the present invention;

[0020] Figure 2 This is a second viewing angle diagram of the OTR microwave oven according to an embodiment of the present utility model;

[0021] Figure 3 This is a third perspective view of the OTR microwave oven according to an embodiment of the present utility model;

[0022] Figure 4 Schematic diagram of the explosion of the OTR microwave oven according to the embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1 - Chamber; 101 - Front side panel; 1011 - First air inlet; 1012 - First exhaust outlet; 1013 - Second air inlet; 1014 - Second exhaust outlet; 102 - Rear side panel; 103 - Chamber top panel; 1031 - Exhaust hole; 104 - U-shaped panel; 1041 - Inlet mesh; 1042 - Exhaust mesh; 2 - Box bottom panel; 21 - Smoke outlet; 3 - Control panel; 4 - Electrical room ;41-upper space;411-filter board;412-capacitor;42-lower space;421-magnetron;422-transformer;423-third fan;5-drive assembly;51-first fan;52-second fan;6-first partition;7-second partition;71-vertical baffle;8-third partition;9-fourth partition;10-door assembly;11-air guide plate;12, mounting plate. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. The technical features of the embodiments of the present invention can be combined with each other without conflict.

[0026] It should be noted that all terms used in this utility model to indicate direction and position, such as "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "low", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection status between the various components in a certain specific state (as shown in the accompanying drawings). They are only for the convenience of describing this utility model, and do not require that the utility model must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the utility model. In addition, the descriptions of "first", "second", etc. in this utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated.

[0027] In the description of this utility model, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0028] The OTR microwave oven has the functions of microwave heating and oil fume extraction. It is usually hung above the stove and usually higher than a person's head. It can extract the oil fume generated by the stove to prevent the oil fume from polluting the human body. It is equivalent to the function of a range hood. The oil fume is sucked by the fan in the OTR microwave oven and discharged through the first exhaust port of the OTR microwave oven. The oil fume has a high temperature when it is discharged, which will cause the exhaust gas temperature in the atmosphere to be too high. By introducing some cold air into the electrical room to mix the cold air with the high-temperature flue gas, the temperature of the exhaust waste can be reduced, but the effect needs to be further improved. To this end, the applicant proposes the following technical solution:

[0029] like Figure 1-4 As shown, an OTR microwave oven includes a cavity 1, a smoking port 21 is arranged below the cavity 1, an electrical chamber 4 is formed on one side of the cavity 1, a driving assembly 5 is arranged on the top rear side of the cavity 1, a smoking duct is formed between the inlet end of the driving assembly 5 and the smoking port 21, a second partition 7 is arranged on the outlet end of the driving assembly 5, which is used to form a smoke exhaust duct and transport gas to the front side; a first partition 6 is arranged on the top front side of the cavity 1, the first partition 6 is placed vertically and is located on the side of the second partition 7 away from the electrical chamber 4, which is used to form a cooling duct for transporting air into the smoke exhaust duct.

[0030] This setting can introduce outside air into the smoke duct formed on the side of the cavity 1 away from the electrical room 4, thereby dissipating the heat of the oil smoke in the smoke exhaust duct and preventing the exhaust gas discharged into the atmosphere from being too hot; at the same time, it reduces the influence of high-temperature smoke on the heat dissipation of the cavity 1, and the operation of the microwave oven is stable and reliable.

[0031] Preferably, the chamber 1 includes a front side panel 101 and a rear side panel 102. The front side panel 101 is provided with a first air inlet 1011 and a first exhaust port 1012. The first air inlet 1011 is connected to the cooling air duct, and the first exhaust port 1012 is located on a side of the first air inlet 1011 away from the first partition 6 and is connected to the exhaust air duct. This arrangement allows external air to be introduced into the exhaust air duct through the cooling air duct, and then sucked into the exhaust air duct by the drive assembly 5 and discharged outward, thereby achieving a good heat dissipation effect.

[0032] Preferably, the cavity 1 includes a U-shaped plate 104, and the U-shaped plate 104 is provided with an air outlet mesh 1042 on one side close to the first partition 6, which is used to discharge the oil smoke and the like generated in the cavity 1 to the smoke duct. The first partition 6 can prevent a large amount of smoke from flowing through the air outlet mesh 1042 or even entering the cavity 1, ensuring that the wind pressure outside the air outlet mesh 1042 is low, so that the oil smoke in the cavity 1 can be discharged. As an example of the present invention, the U-shaped plate 104 is provided with an air intake mesh 1041 on one side of the electrical chamber 4. This setting can promptly remove the heat generated in the cavity 1, ensuring good heat dissipation of the microwave oven as a whole.

[0033] As an example of the present invention, the drive assembly 5 includes a first fan 51 and a second fan 52. The second partition 7 is provided with a vertical baffle 71, which is located between the first and second fans 51, 52. This arrangement divides the second partition 7 into two independent areas, preventing the first and second fans 51, 52 from interfering with each other, while also improving the mechanical strength of the second partition 7. Preferably, the inlet end of the second fan 52 is positioned toward the electrical compartment 4, while the inlet end of the first fan 51 is positioned away from the electrical compartment 4.

[0034] Preferably, the front side panel 101 also includes a second air inlet 1013 and a second exhaust port 1014. The second air inlet 1013 is located on the side of the second exhaust port 1014 away from the first exhaust port 1012. The cooling air entering through the second air inlet 1013 is suitable for flowing through the electrical room 4 and then flowing into the second fan 52. The inlet end of the second fan 52 is connected to the smoking port 21 through the smoking air duct, and the outlet end of the second fan 52 is connected to the second exhaust port 1014 through the smoke exhaust air duct.

[0035] As an example of the present invention, the OTR microwave oven includes a cabinet bottom plate 2. The smoke outlet 21 is disposed on the cabinet bottom plate 2 and extends in a left-right direction, enabling oil suction over a large area. The OTR microwave oven also includes a door assembly 10 and a control panel 3. The specific structure and assembly relationship of these components are conventional and will not be described in detail here.

[0036] Preferably, a grille structure is provided above the door assembly 10, with the first exhaust port 1012 and the second exhaust port 1014 both formed on the grille structure, and the first air inlet 1011 and the second air inlet 1013 communicating with the grille structure. This arrangement can shield the first air inlet 1011 and the second air inlet 1013, improving the appearance and directing the smoke upward.

[0037] Preferably, the second fan 52 is located at the top of the cavity 1, near the rear, with its inlet facing the electrical room 4 and its outlet facing the front. This arrangement allows the cooling air to be smoothly drawn by the second fan 52 after cooling the electrical components in the electrical room 4 and discharged toward the front, simplifying the structure of the exhaust duct.

[0038] As an example of the present invention, a horizontally placed mounting plate 12 is provided within the electrical room 4. The mounting plate 12 divides the electrical room 4 into an upper space 41 and a lower space 42. The upper space 41 forms a first cooling air duct and is internally provided with a filter plate 411 and a capacitor 412. The lower space 42 forms a second cooling air duct and is internally provided with a magnetron 421 and a transformer 422. The first cooling air duct connects the second air inlet 1013 with the inlet end of the second fan 52, while the second cooling air duct connects the second air inlet 1013 with the exhaust duct. This arrangement can separate the cooling air into two paths: the first cooling air duct dissipates heat from the electrical components in the upper space 41 and is then drawn in by the second fan 52. The second cooling air duct dissipates heat from the electrical components in the lower space 42 and is then mixed with the oil smoke in the exhaust duct and drawn in by the second fan 52, thereby preventing the exhaust gas discharged into the atmosphere from being too hot.

[0039] As an example of the present invention, a third fan 423 is provided in the second cooling air duct, and the magnetron 421 is located in the air supply path of the third fan 423. This arrangement allows some cooling air to enter the lower space 42 under its suction effect, ensuring good heat dissipation of the magnetron 421 and other components. It also increases the wind pressure within the electrical room 4, facilitating some air to enter the cavity 1 through the air inlet mesh 1041.

[0040] Preferably, a vertically extending third partition 8 is provided between the second cooling air duct and the exhaust air duct, and the third partition 8 is provided with mesh holes. This arrangement can reduce the entry of oil smoke into the electrical room 4, thereby providing a certain degree of isolation for the oil smoke; the air blown by the third fan 423 can also smoothly enter the rear exhaust air duct, thereby dissipating the heat of the oil smoke.

[0041] Preferably, a fourth partition plate 9 extending vertically is provided between the first cooling air duct and the smoke air duct, the fourth partition plate 9 being provided with a second mesh and being arranged adjacent to the inlet end of the second fan 52. This arrangement can reduce the entry of oil smoke into the electrical room 4, thereby playing a certain role in isolating the oil smoke.

[0042] Preferably, the cavity 1 has a cavity top plate 103, which is provided with an air outlet 1031, which is connected to the inlet end of the second fan 52. After the cooling air in the second cooling air duct dissipates heat from the magnetron 421, part of the cooling air can enter the interior of the cavity 1 through the air inlet mesh 1041, cool the interior of the cavity 1, and then be discharged through the air outlet 1031 and the air outlet mesh 1042, pass through and be sucked into the drive assembly 5, and then be discharged outside the OTR microwave oven through the exhaust duct.

[0043] As an example of the present invention, an air guide plate 11 is provided on the outer peripheral side of the air outlet 1031, and the air guide plate 11 is located below the second partition plate 7. The second partition plate 7, the air guide plate 11, and the cavity top plate 103 together form an exhaust channel, which can ensure that the gas discharged from the cavity 1 can flow into the second fan 52 along the exhaust channel, and the exhaust channel is located below the smoke exhaust duct, and the gas directly discharged from the cavity 1 will not mix with the smoke blown out from the second fan 52.

[0044] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. An OTR microwave oven, comprising a cavity (1), a smoking port (21) being provided below the cavity (1), an electrical chamber (4) being formed on one side of the cavity (1), a driving assembly (5) being provided at the top rear side of the cavity (1), a smoking air duct being formed between an inlet end of the driving assembly (5) and the smoking port (21), and a second partition (7) being provided at an outlet end of the driving assembly (5) for forming a smoke exhaust air duct and conveying gas to the front side; characterized in that: A first partition (6) is provided on the top front side of the cavity (1), and the first partition (6) is placed vertically and is located on the side of the second partition (7) away from the electrical room (4), and is used to form a cooling air duct, thereby transporting air to the smoking air duct located on the side of the cavity (1) away from the electrical room (4).

2. The OTR microwave oven according to claim 1, characterized in that The cavity (1) comprises a front side plate (101), the front side plate (101) being provided with a first air inlet (1011) and a first air outlet (1012), the first air inlet (1011) being in communication with the cooling air duct, and the first air outlet (1012) being located on a side of the first air inlet (1011) away from the first partition plate (6) and being in communication with the smoke exhaust air duct.

3. The OTR microwave oven according to claim 1, characterized in that The driving assembly (5) comprises a first fan (51) and a second fan (52), wherein the inlet ends of the first fan (51) and the second fan (52) face opposite directions and respectively form the smoking air duct with the smoking port (21), and the second partition (7) is provided with a vertical baffle (71), wherein the vertical baffle (71) is located between the first fan (51) and the second fan (52) and extends along the airflow direction of the smoke exhaust duct.

4. The OTR microwave oven according to claim 3, characterized in that The inlet end of the second fan (52) is connected to the electrical room (4), a horizontally placed mounting plate (12) is provided in the electrical room (4), a first cooling air duct is formed above the mounting plate (12), a filter plate (411) is provided inside the first cooling air duct, and the filter plate (411) is fixedly assembled on the side of the second partition plate (7).

5. The OTR microwave oven according to claim 4, characterized in that A second cooling air duct is formed below the mounting plate (12) for conveying outside air to the smoking air duct; a third fan (423) and a magnetron (421) are arranged in the second cooling air duct, and the magnetron (421) is located on the air supply path of the third fan (423).

6. The OTR microwave oven according to claim 5, characterized in that The cavity (1) is provided with an air inlet mesh (1041) on one side close to the electrical chamber (4), and an air outlet mesh (1042) is provided on the side wall of the other side of the cavity (1), and the air outlet mesh (1042) is communicated with the smoking air duct.

7. The OTR microwave oven according to claim 6, characterized in that The cavity (1) includes a cavity top plate (103), an air outlet (1031) is provided on the cavity top plate (103), an air guide plate (11) is provided on the side of the air outlet (1031), the air guide plate (11) is located below the second partition plate (7), the second partition plate (7), the air guide plate (11), and the cavity top plate (103) together form an exhaust channel, and the exhaust channel is connected to the inlet end of the drive component (5).

8. The OTR microwave oven according to claim 5, characterized in that A third partition plate (8) extending vertically is provided between the second cooling air duct and the smoking air duct, and mesh holes are provided on the third partition plate (8).

9. The OTR microwave oven according to claim 8, characterized in that A fourth partition (9) extending vertically is provided between the first cooling air duct and the smoking air duct. The fourth partition (9) is provided with a second mesh and is arranged adjacent to the inlet end of the second fan (52).

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