An oven and an oven heat dissipation control method

Abstract

The application discloses an oven and an oven heat dissipation control method, and belongs to the technical field of kitchen appliances. The oven comprises a heat dissipation system, and the heat dissipation system comprises a door body air inlet, an air outlet, a door body air duct, a main air duct and a top air inlet. The door body air inlet is located at the bottom end of the oven door body. The air outlet is located at the front end of the bottom of the oven. One end of the door body air duct is communicated with the door body air inlet, and the other end of the door body air duct extends from bottom to top along the oven door body. One end of the main air duct is communicated with the top of the door body air duct, and the other end of the main air duct is communicated with the air outlet in sequence through the circuit board at the top of the oven, the back of the oven and the bottom of the oven. The top air inlet is located at the front end of the top of the oven and is communicated with the main air duct. The oven heat dissipation control method adopts the oven. When the door body air inlet and the top air inlet are opened at the same time, the air in the door body air duct has a certain temperature, the temperature of the air mixed with the air at the top air inlet is reduced, and the circuit board is cooled, so that the cooling effect is good.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to an oven and a method for controlling oven heat dissipation. Background Technology

[0002] Ovens are becoming increasingly common. Because ovens generate high temperatures during use, they are generally equipped with a cooling system, and most use air cooling.

[0003] In existing technology, air ducts are formed in the oven door and shell. Air entering from the air inlet passes through components such as the door, circuit board, and convection fan, carrying away heat. However, the air is already heated as it passes through the door, and then it dissipates heat to the circuit board, resulting in poor cooling effect.

[0004] Furthermore, most existing ovens have exhaust vents at the top front, and the hot air emitted can easily injure the operator. Since ovens are typically built into cabinets, if a rear exhaust system were used, the hot air would enter the cabinets, causing them to become damp. Summary of the Invention

[0005] The purpose of this invention is to provide an oven and an oven heat dissipation control method to solve the technical problems of poor cooling effect on the circuit board and unreasonable exhaust port setting in the prior art.

[0006] Based on the above concept, the technical solution adopted by this invention is as follows:

[0007] An oven includes a heat dissipation system, the heat dissipation system comprising:

[0008] The air inlet is located at the bottom of the oven door.

[0009] The air vent is located at the front of the bottom of the oven;

[0010] The door air duct connects to the door air inlet at one end and extends upward along the oven door at the other end.

[0011] The main air duct connects to the top of the door air duct at one end and passes sequentially through the circuit board on the top of the oven, the back of the oven, and the bottom of the oven at the other end, and connects to the air outlet.

[0012] The top air inlet is located at the front of the top of the oven and is connected to the main air duct.

[0013] The air inlet of the door and the air inlet at the top are opened and closed independently.

[0014] The heat dissipation system further includes:

[0015] The side air intake is located at the bottom of the side of the oven.

[0016] The side air duct is connected to the side air inlet at one end and extends to the top of the oven and is connected to the main air duct at the other end. The connection between the side air duct and the main air duct is located downstream of the circuit board. The door air inlet, the top air inlet and the side air inlet open and close independently.

[0017] The side air inlet is located at the bottom front side of the oven side, and the side air duct extends obliquely along the oven side.

[0018] The oven has two side air ducts, which are located on the two sides of the oven.

[0019] An oven heat dissipation control method, using the above-mentioned oven, includes:

[0020] When the oven starts working, the door air inlet is open and the top air inlet is closed, and air flows out from the air outlet through the door air duct and the main air duct.

[0021] Detect the temperature value of the circuit board;

[0022] When the temperature of the circuit board reaches the first threshold, the top air inlet opens, and the air from the top air inlet enters the main air duct and flows out from the air outlet.

[0023] When the top air inlet is opened, the door air inlet also opens. The air entering through the door air inlet mixes with the air entering through the top air inlet and enters the main air duct, then flows out through the air outlet.

[0024] Specifically, when the top air inlet is open, the door air inlet is closed; after the door air inlet has been closed for a set period of time, both the door air inlet and the top air inlet open simultaneously.

[0025] When the door air inlet and the top air inlet are opened simultaneously, the temperature rise rate of the circuit board is obtained based on the temperature value of the circuit board, and the speed of the cooling fan is adjusted according to the temperature rise rate.

[0026] When the door air inlet and the top air inlet are opened at the same time, if the temperature value of the convection fan reaches the second threshold, at least one side air inlet will open. The air entering through the side air inlet will enter the main air duct through the side air duct, mix with the air downstream of the circuit board in the main air duct, and flow out from the air outlet through the convection fan.

[0027] The beneficial effects of this invention are:

[0028] The oven proposed in this invention allows outside air to enter through the door air inlet when the door air inlet is open and the top air inlet is closed. This air then flows through the door air duct, into the main air duct, and out through the air outlet, simultaneously cooling the door, circuit board, and convection fan. When both the door and top air inlets are open, the air entering through the top air inlet mixes with the air exiting the door air duct, enters the main air duct, and exits through the air outlet. Since the air in the door air duct has a certain temperature, its temperature decreases after mixing with the air at the top air inlet, further cooling the circuit board and resulting in a better cooling effect.

[0029] Because the air vent is located at the front of the bottom of the oven, the air will not blow into the cabinet where the oven is installed, thus preventing the cabinet from becoming hot and humid. The air will also not blow directly onto the operator, thus preventing the operator from being harmed by hot air. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the heat dissipation system of the oven provided in an embodiment of the present invention.

[0031] In the picture:

[0032] 1. Oven door; 2. Circuit board; 3. Cooling fan; 4. Convection fan;

[0033] 10. Door air duct; 20. Main air duct; 30. Side air duct. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] See Figure 1 An oven includes an oven shell and an oven door 1. The interior of the oven shell forms a cavity for holding food to be baked. The oven door 1 is used to open and close the opening of the oven shell. Typically, the oven shell has a bottom plate, a top plate, a back plate, and side plates. A circuit board 2 is installed inside the top plate, and a control panel is located at the front of the top plate. A cooling fan 3 is installed at the junction of the top plate and the back plate to draw outside air into the air duct. A convection fan 4 is installed inside the back plate.

[0039] An oven includes a heat dissipation system, which consists of an air inlet, an air outlet, and an air duct.

[0040] There are multiple air inlets, including at least a door air inlet and a top air inlet. The door air inlet is located at the bottom of the oven door 1, and the top air inlet is located at the front of the top of the oven. There are multiple air ducts, including at least a door air duct 10 and a main air duct 20. One end of the door air duct 10 connects to the door air inlet, and the other end extends upwards along the oven door 1. One end of the main air duct 20 connects to the top of the door air duct 10, and the other end passes sequentially through the circuit board 2 on the top of the oven, the back of the oven, and the bottom of the oven, connecting to the air outlet. There is one air outlet located at the front of the bottom of the oven. The top air inlet connects to the main air duct 20.

[0041] The door air inlet and the top air inlet open and close independently. Specifically, valves are installed at both the door air inlet and the top air inlet, and the oven's control system can control the opening and closing of these valves.

[0042] When the door air inlet is open and the top air inlet is closed, outside air enters through the door air inlet, passes through the door air duct 10, enters the main air duct 20, and flows out through the air outlet, simultaneously cooling the door, circuit board 2, and convection fan 4. When both the door air inlet and the top air inlet are open, the air entering through the top air inlet mixes with the air exiting the door air duct 10, enters the main air duct 20, and flows out through the air outlet. Since the air inside the door air duct 10 has a certain temperature, its temperature drops after mixing with the air at the top air inlet, further cooling the circuit board 2, resulting in a better cooling effect.

[0043] Because the air vent is located at the front of the bottom of the oven, the air will not blow into the cabinet where the oven is installed, thus preventing the cabinet from becoming hot and humid. The air will also not blow directly onto the operator, thus preventing the operator from being harmed by hot air.

[0044] In order to achieve precise heat dissipation in the oven, temperature sensors are installed in different areas inside the oven. The temperature sensors are used to detect the temperature values ​​at locations such as the oven door 1, circuit board 2, and convection fan 4.

[0045] Furthermore, the heat dissipation system also includes a side air inlet and a side air duct 30. The side air inlet is located at the bottom of the side of the oven. One end of the side air duct 30 is connected to the side air inlet, and the other end extends to the top of the oven and is connected to the main air duct 20. The connection between the side air duct 30 and the main air duct 20 is located downstream of the circuit board 2. The door air inlet, the top air inlet and the side air inlet open and close independently.

[0046] Since the oven door 1 is mostly made of transparent glass, it is difficult to insulate it. Therefore, the cold air flowing through the door air duct 10 will be heated to a higher temperature. However, the sides of the oven have insulation measures, so the temperature of the cold air flowing through the sides is still lower than the air temperature at the cooling circuit board 2 inside the main air duct 20.

[0047] Since the air in the main air duct 20 cools the circuit board 2 and is at a high temperature, when the side air inlet is opened, the air entering through the side air inlet mixes with the air in the main air duct 20 through the side air duct 30, which cools the air in the main air duct 20 and improves the cooling effect on the convection fan 4. Finally, the air is discharged from the air outlet through the bottom of the oven.

[0048] Specifically, the side air inlet is located at the bottom front of the oven side, facilitating air intake from the outside. Since ovens are typically built into cabinets, placing the side air inlet in the middle of the bottom side would hinder air intake. Because the circuit board 2 is generally located in the middle of the top of the oven, the side air duct 30 extends obliquely along the side of the oven, increasing the contact area between the side air duct 30 and the oven shell, resulting in better cooling.

[0049] In this embodiment, two side air ducts 30 are provided, which are located on the two sides of the oven respectively, so that the two sides of the oven can be evenly aired in, thereby dissipating heat evenly, while increasing the air intake and improving the cooling effect.

[0050] Of course, air vents can also be added to other parts of the oven, such as the top plate or back plate, to increase the amount of air intake.

[0051] This invention also provides an oven heat dissipation control method, using the above-described oven, comprising:

[0052] When the oven starts working, the door air inlet is open and the top air inlet is closed, and air flows out from the air outlet through the door air duct 10 and the main air duct 20.

[0053] Detect the temperature value of circuit board 2;

[0054] When the temperature of circuit board 2 reaches the first threshold, the top air inlet opens, and the air from the top air inlet enters the main air duct 20 and flows out from the air outlet.

[0055] Since the oven door 1 and circuit board 2 are components with high temperature rise in the oven, when the oven starts working, outside air enters through the air inlet of the door, passes through the air duct 10, enters the main air duct 20 and flows out through the air outlet, dissipating heat for the oven door 1, circuit board 2 and convection fan 4 at the same time.

[0056] When the temperature of circuit board 2 reaches the first threshold, it indicates that the temperature of circuit board 2 is high and the heat dissipation effect cannot be achieved by relying solely on the door air inlet. At this time, the top air inlet is opened, the air temperature entering through the top air inlet is lower, and the distance between the top air inlet and the cooling fan 3 is closer. The air entering through the top air inlet dissipates heat from circuit board 2 through the main air duct 20, thereby rapidly cooling circuit board 2.

[0057] When the top air inlet is opened, the door air inlet also opens simultaneously. The air entering through the door air inlet mixes with the air entering through the top air inlet in the door air duct 10 and then flows out through the air outlet. The air at the top air inlet can cool the air exiting through the door air duct 10 and also provide a good cooling effect on the circuit board 2.

[0058] Optionally, when the top air inlet is open, the door air inlet is closed, so that all the air entering through the top air inlet is used to cool the circuit board 2, allowing the circuit board 2 to cool down quickly and preventing damage from high temperatures. After the door air inlet has been closed for a set period of time, both the door air inlet and the top air inlet open simultaneously to prevent the oven door 1 from overheating.

[0059] When the door air inlet and the top air inlet are opened simultaneously, the temperature rise rate of circuit board 2 is obtained based on its temperature value, and the speed of cooling fan 3 is adjusted accordingly. There is a positive correlation between the temperature rise rate and the speed.

[0060] When the cooling fan 3 is turned on, the speed of the cooling fan 3 is the set speed. If the temperature rise rate of the circuit board 2 reaches the first set value, indicating that the temperature of the circuit board 2 is rising continuously, the speed of the cooling fan 3 is adjusted to the first speed, which is greater than the set speed. When the cooling fan 3 continues at the first speed for a first set time, if the temperature rise rate of the circuit board 2 is not less than the second set value, the speed of the cooling fan 3 is adjusted to the second speed, which is greater than the first set value.

[0061] By adjusting the speed of the cooling fan 3, energy can be saved and noise in the air duct can be reduced.

[0062] When the oven's cooling system has side air inlets, if the door air inlet and top air inlet are both open, and the temperature of the convection fan 4 reaches the second threshold, at least one side air inlet will open. Air entering through the side air inlet passes through the side air duct 30 into the main air duct 20, mixes with the air downstream of the circuit board 2 within the main air duct 20, and then flows out through the air outlet after passing through the convection fan 4. The air within the side air duct 30 cools the air within the main air duct 20, improving the cooling effect on the convection fan 4. Both side air inlets can be opened simultaneously to increase the air intake and achieve a better cooling effect.

[0063] In summary, opening the door air inlet, top air inlet, and side air inlet simultaneously maximizes the airflow and provides the best cooling effect. Figure 1 The middle arrow indicates the direction of airflow within the duct.

[0064] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for controlling heat dissipation in an oven, the oven comprising a heat dissipation system, characterized in that, The heat dissipation system includes: The air inlet is located at the bottom of the oven door (1); The air vent is located at the front of the bottom of the oven; The door air duct (10) is connected to the door air inlet at one end and extends from bottom to top along the oven door (1) at the other end; The main air duct (20) is connected to the top of the door air duct (10) at one end, and the other end passes through the circuit board (2) on the top of the oven, the back of the oven and the bottom of the oven in sequence, and is connected to the air outlet. The top air inlet is located at the front end of the top of the oven and is connected to the main air duct (20); The side air intake is located at the bottom of the side of the oven. The side air duct (30) is connected to the side air inlet at one end and extends to the top of the oven and is connected to the main air duct (20) at the other end. The connection between the side air duct (30) and the main air duct (20) is located downstream of the circuit board (2). The oven heat dissipation control method includes: When the oven starts working, the door air inlet is opened and the top air inlet is closed, and air flows out from the air outlet through the door air duct (10) and the main air duct (20); Detect the temperature value of the circuit board (2); When the temperature of the circuit board (2) reaches the first threshold, the top air inlet opens, and the air from the top air inlet enters the main air duct (20) and flows out from the air outlet. When the door air inlet and the top air inlet are opened at the same time, if the temperature value of the convection fan (4) reaches the second threshold, at least one of the side air inlets will be opened. The air entering through the side air inlet will enter the main air duct (20) through the side air duct (30), mix with the air downstream of the circuit board (2) in the main air duct (20), and flow out from the air outlet through the convection fan (4).

2. The oven heat dissipation control method according to claim 1, characterized in that, The air inlet of the door and the air inlet at the top open and close independently.

3. The oven heat dissipation control method according to claim 1, characterized in that, The door air inlet, the top air inlet, and the side air inlet open and close independently.

4. The oven heat dissipation control method according to claim 3, characterized in that, The side air inlet is located at the bottom front side of the oven side, and the side air duct (30) extends obliquely along the oven side.

5. The oven heat dissipation control method according to claim 3, characterized in that, Two side air ducts (30) are provided, and the two side air ducts (30) are respectively located on the two sides of the oven.

6. The oven heat dissipation control method according to claim 1, characterized in that, When the top air inlet is opened, the door air inlet is opened at the same time. The air entering through the door air inlet mixes with the air entering through the top air inlet through the door air duct (10) and enters the main air duct (20), and flows out from the air outlet.

7. The oven heat dissipation control method according to claim 1, characterized in that, When the top air inlet is open, the door air inlet is closed. After the door air inlet has been closed for a set period of time, both the door air inlet and the top air inlet open simultaneously.

8. The oven heat dissipation control method according to claim 1, characterized in that, When the door air inlet and the top air inlet are opened at the same time, the temperature rise rate of the circuit board (2) is obtained according to the temperature value of the circuit board (2), and the speed of the cooling fan (3) is adjusted according to the temperature rise rate.

Images