CN107550308B - Built-in microwave oven - Google Patents

Abstract

The invention provides an embedded microwave oven, comprising: a casing, the casing includes a casing front plate, a casing top plate, a casing rear cover, a casing bottom plate and two casing side plates, and the casing front plate There is an opening; a door body is installed on the front surface of the front plate of the casing; a control box is installed on the front surface of the front plate of the casing; plate, the bottom plate of the cavity and two side plates of the cavity, the front end of the cavity is fixedly connected with the front plate of the shell and aligned with the opening of the front plate of the shell, a cooling air duct is formed between the cavity and the shell, and the front plate of the shell is The casing air inlet and the casing air outlet communicated with the cooling air duct are provided; the cooling fan is installed in the cooling air duct; the electrical components are installed in the cooling air duct. In this solution, the cooling air duct is completely inside the product, the air in and out is not affected by the size of the cabinet, and the heat dissipation is stable and reliable, thus ensuring the safety and stability of the product's operation.

Description

Built-in microwave oven

technical field

The present invention relates to the field of cooking devices, and more particularly, to an embedded microwave oven.

Background technique

A microwave oven is an oven with microwave function. In order to realize the rapid heating of the oven, the cavity is required to be closed. However, when using the microwave function, in order to make the water vapor inside the cavity smoothly discharge and ensure that the door perspective window is clearly visible, The cavity needs to be ventilated, and there is a contradiction between sealing and ventilation. The air duct of the current built-in microwave oven is designed with the fan at the rear, and the electrical components are cooled by sucking air through the gap between the whole machine and the cabinet or the reserved gap of the cabinet, and then from the gap between the door body and the control box, the door body and the lower edge of the cabinet gap discharge. When the microwave heating is turned on, the cavity vent is opened through a controllable switch to ventilate the cavity; when the hot air or barbecue heating is turned on, the cavity vent is closed to ensure that the temperature can rise quickly. However, since the air inlet channel depends on the cabinet, when the size of the cabinet does not meet the design requirements, the gap between the whole machine and the cabinet is insufficient, so that the air intake of the microwave oven cannot be guaranteed, which affects the heat dissipation effect of the product and causes the temperature rise of the electrical components to be too high. , so it is easy to cause product safety performance problems.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, the purpose of the present invention is to provide an embedded microwave oven with reliable heat dissipation.

In order to achieve the above purpose, an embodiment of the present invention provides an embedded microwave oven, comprising: a casing, the casing includes a casing front plate, a casing top plate, a casing rear cover, a casing bottom plate and two shells The body side plate, the front plate of the casing is provided with an opening; the door body is installed on the front surface of the front plate of the casing, and is used to control the opening and closing of the opening of the front plate of the casing; the control box is installed on the front plate of the casing. on the front surface of the front plate of the casing; a cavity is arranged in the casing, the cavity includes a cavity top plate, a cavity rear plate, a cavity bottom plate and two cavity side plates, the cavity The front end is fixedly connected with the front panel of the housing and is aligned with the opening of the front panel of the housing, a cooling air channel is formed between the cavity and the housing, and the front panel of the housing is not covered by the door and the housing. The position covered by the control box is provided with a housing air inlet and a housing air outlet communicating with the cooling air duct; a cooling fan is installed in the cooling air duct and used for inhalation through the housing air inlet And the air is supplied to the air outlet of the casing through the cooling air duct; the electrical device is installed in the cooling air duct.

In this solution, a cooling air duct is formed between the shell and the cavity of the embedded microwave oven, and the air inlet and outlet of the shell are opened on the front plate of the shell, so that the cooling air duct is designed to be completely inside the product, and the air in and out It is not affected by the size of the cabinet, and the heat dissipation is stable and reliable. Even when the size of the cabinet does not meet the design requirements, a good heat dissipation effect can be achieved to prevent the problem of excessive temperature rise of electrical components, thereby ensuring the safety and stability of the product. .

In addition, the embedded microwave oven in the prior art relies on the air in or out of the gap between the body and the cabinet. Therefore, when the microwave heating function is used, the water vapor discharged from the cavity will enter the cabinet, which will cause certain damage to the cabinet. , affecting the service life of the cabinet. The cooling air duct of the embedded microwave oven provided by this solution is completely in the product, and the air is discharged from the front panel of the shell to ensure that the water vapor discharged from the cavity will not contact the interior of the cabinet, so as to avoid damage to the cabinet, thereby extending the The service life of the cabinet.

In the above technical solution, preferably, an air inlet channel is formed between the cavity top plate and the casing top plate, an air guide channel is formed between the cavity rear plate and the casing rear cover, and the cavity bottom plate is formed. A lower air outlet channel is formed between the bottom plate of the casing and the air inlet channel, the air guide channel and the lower air outlet channel are sequentially connected to form a cooling air channel, and the control box is located above the door body. And a gap is formed between the control box and the door body, the housing air inlet is aligned with the gap between the control box and the door body and communicates with the air inlet channel, and the housing air outlet includes: The lower air outlet of the housing is located below the door body and communicated with the lower air outlet channel.

The embedded microwave oven in the prior art usually blows out the air from the gap between the control box and the door, resulting in hot air blowing out from the position of the control box, which affects the user's experience of using the product. The embedded microwave oven provided by this solution enters the air through the gap between the control box and the door body, and exhausts the air from the bottom end of the front panel of the shell, so that the air outlet position is far away from the control box, so as to ensure that the user does not operate the control box. Contact with hot air, thereby enhancing the user's experience.

In any of the above technical solutions, preferably, the air inlet channel is provided with a partition, the partition divides the air inlet channel into a front area and a rear area, and the partition is provided with a ventilation hole, the electrical device includes a computer board, a filter board, a magnetron and a transformer, the computer board and the filter board are installed in the front area, the magnetron and the transformer are installed in the in the rear area.

During the use of the product, the magnetron and the transformer will generate more heat, while the computer board and the filter board have higher requirements for temperature rise control, and the problem of excessive temperature rise will affect the reliability of the product operation. For this reason, this scheme separates the computer board and filter board from heating components such as magnetrons and transformers through a partition, and installs the computer board and filter board in the front area before the partition, so that the position of the computer board and the filter board is Close to the air inlet of the casing, the computer board and filter board are cooled by the low-temperature air that has just been sucked into the casing, while the heating components such as magnetrons and transformers are installed in the rear area behind the partition, which is in the downwind of the computer board and filter board. At the same time, under the barrier of the partition, the heat transfer from the rear area where the magnetron and the transformer are located to the front area where the computer board and the filter board are located can be greatly reduced, so the temperature rise of the computer board and the filter board can be greatly reduced. So as to ensure the reliability of product operation.

In any of the above technical solutions, preferably, an upper heating pipe is installed in the cavity, and the upper heating pipe is installed close to the top of the cavity and located below the rear area.

This design increases the distance between the computer board, the filter board and the upper heating pipe, which can reduce the influence of the heat radiation generated by the upper heating pipe on the computer board and the filter board, thereby further reducing the temperature rise of the computer board and the filter board. Improve the reliability of product operation.

In any of the above technical solutions, preferably, the cooling fan is installed in the front area.

Existing products usually adopt the structure with the cooling fan at the rear. In this way, the distance between the cooling fan and the product air inlet is too large, so that the negative pressure generated at the position of the product air inlet is low, and the amount of sucked air is small, and the electrical components cannot be fully cooled. In this solution, the location of the cooling fan is close to the air inlet of the casing, which greatly shortens the distance between the cooling fan and the air inlet, thereby increasing the negative pressure at the air inlet of the casing, increasing the air intake, and thus improving the heat dissipation effect of the product.

In any of the above technical solutions, preferably, the cavity top plate is provided with a cavity air inlet, a cavity air outlet and an opening and closing control assembly, and the opening and closing control assembly is used to control the cavity air inlet and the cavity. The air outlet of the cavity is opened and closed.

In any of the above technical solutions, preferably, the opening and closing control assembly includes a bidirectional motor and a baffle plate, the bidirectional motor is electrically connected to the computer board, and the computer board is used to control the operation of the bidirectional motor, so The baffle is connected with the motor shaft of the two-way motor, so that the two-way motor can drive the baffle to move relative to the cavity top plate, and the baffle has a closed position and an open position relative to the cavity top plate, and the baffle plate has a closed position and an open position relative to the cavity top plate. When the baffle is in the closed position, the baffle simultaneously closes the cavity air inlet and the cavity air outlet, and when the baffle is in the open position, the baffle avoids the The air inlet of the cavity and the air outlet of the cavity are opened so that the air inlet of the cavity and the air outlet of the cavity are opened at the same time.

In this solution, the computer board can control the forward or reverse rotation of the two-way motor, so that the two-way motor can drive the baffle to reciprocate. When the product is turned on for microwave heating, the two-way motor drives the baffle to the open position, so that the air inlet of the cavity and the cavity are moved to the open position. The body air outlet is opened at the same time to ventilate the cavity to discharge the water vapor in the cavity; when the product is turned on hot air or barbecue heating, the two-way motor drives the baffle to move to the open position to close the position, so that the baffle can separate the cavity air inlet and the cavity. The air outlet of the cavity is closed at the same time to ensure that the temperature in the cavity can rise rapidly, thereby improving the heating efficiency of the product.

In any of the above technical solutions, preferably, the opening and closing control assembly further includes a gear and a rack, the gear is fixedly installed on the motor shaft of the bidirectional motor, and the rack is fixedly installed on the baffle, And the rack is always meshed with the gear.

In any of the above technical solutions, preferably, the opening and closing control assembly further includes a first position switch and a second position switch, and the first position switch and the second position switch are respectively electrically connected to the computer board, so When the shutter reaches the closed position, it interferes with the first position switch to trigger the first position switch, and when the shutter reaches the open position, it interferes with the second position switch to trigger the first position switch. Second position switch.

This scheme determines whether the baffle has reached the closed position or the open position by setting the first position switch and the second position switch. When the product is turned on for microwave heating, the two-way motor drives the baffle to move to one side under the control of the computer board. When the board reaches the open position, the baffle collides with the second position switch, triggering the second position switch, so that the second position switch sends a trigger signal to the computer board, and the computer board controls the bidirectional motor to stop according to the trigger signal, so as to keep the baffle at the In the open position, the cavity air inlet and the cavity air outlet are opened at the same time. When the product is turned off for microwave heating, the bidirectional motor drives the baffle to move in the opposite direction under the control of the computer board. When the baffle reaches the closed position, the baffle collides with the first position switch, triggering the first position switch, so that the first position switch moves to the opposite direction. The computer board sends a trigger signal, and the computer board controls the bidirectional motor to stop according to the trigger signal, so as to keep the baffle in the closed position, so that the cavity air inlet and the cavity air outlet are closed at the same time.

In any of the above technical solutions, preferably, the cavity top plate includes a top plate body and a support plate, and the top plate body is connected to the shell front plate, the cavity rear plate, and the two cavity side plates. In a sealed connection, the support plate is mounted on the upper surface of the top plate body, and the air inlet channel is formed between the support plate and the casing top plate.

In any of the above technical solutions, preferably, the cavity air outlet includes a first air outlet provided on the top plate body and a second air outlet provided on the support plate and opposite to the first air outlet. The air outlet, the cavity air inlet includes a first air inlet provided on the top plate body and a second air inlet provided on the support plate, and a communication connection is provided between the top plate body and the support plate. The cavity air inlet duct of the first air inlet and the second air inlet, the baffle can control the opening and closing of the second air inlet and the second air outlet, wherein the first air inlet Adjacent to the housing front panel, the second air inlet and the second air outlet are located in the rear region.

When the product is turned on for microwave heating, the baffle opens the second air inlet and the second air outlet on the support plate, and part of the air in the air inlet channel enters the cavity air inlet channel between the support plate and the top plate body through the second air inlet. Then along the cavity air inlet duct to the position of the first air inlet, and then enter the cavity through the first air inlet. Since the first air inlet is close to the front panel of the housing, the air entering from the first air inlet will push the air in the cavity to the The rear end of the cavity moves, and finally enters the cooling air duct through the first air outlet and the second air outlet in sequence, which can prevent the water vapor in the cavity from condensing on the inner surface of the door, so as to ensure that the door window is clearly visible, so that users can The situation in the cavity can be seen clearly, and since the first air outlet and the second air outlet are located in the rear area, the air discharged from the cavity will not affect the computer board and the filter board.

In any of the above technical solutions, preferably, two windshields extending in the front-rear direction are provided in the rear area, and the magnetron, the transformer and the opening and closing control assembly are all located in the between two wind deflectors, and the ventilation holes of the partition plate, the second air inlet and the second air outlet are all aligned with the area between the two wind deflectors.

In this scheme, two wind deflectors are arranged at intervals in the rear area, and both wind deflectors extend in the front and rear directions. This design reduces the width of the air duct in the rear area, and the electrical components in the rear area are installed. On the two windshields, the air is concentrated to flow through the electrical components, which can improve the heat dissipation effect.

In any of the above technical solutions, preferably, one of the two wind shields is provided with a wind shield surface protruding between the two wind shield plates, and the wind shield surface is located on the second wind shield. The rear of the second air inlet.

Blocking the air flow by the wind blocking surface can increase the air intake volume of the second air inlet, so that the ventilation effect of the cavity can be improved, and the water vapor in the cavity can be effectively discharged.

In any of the above technical solutions, preferably, the electrical device further includes a hot air motor, and the hot air motor is installed in the air guide channel.

The hot air component is usually installed behind the cavity of the embedded microwave oven, and the heat dissipation structure of the existing product cannot effectively dissipate the heat of the hot air motor. Therefore, the hot air motor must be wrapped with a thick thermal insulation material, and a heat dissipation fan of the hot air motor needs to be added. As a result, the hot air assembly occupies a large space. In order to make the product meet the specifications, the volume of the cavity can only be reduced, so that the volume of the product is damaged. The cooling air duct of the embedded microwave oven provided by this solution passes through the gap between the cavity rear plate and the shell rear cover, and the hot air motor is installed in the gap between the cavity rear plate and the shell rear cover, which can effectively reduce the speed of the turntable motor. Therefore, the thickness of the thermal insulation layer of the hot air motor can be reduced and the cooling fan of the hot air motor can be removed, thereby increasing the volume of the cavity and increasing the volume of the product.

In any of the above technical solutions, preferably, the electrical device further includes a turntable motor, and the turntable motor is installed in the lower air outlet channel.

When the lower heating pipe is installed at the bottom of the cavity, the heat radiation generated by the lower heating pipe has a great influence on the turntable motor, and the existing products cannot effectively dissipate the heat of the turntable motor. The cooling air duct of the embedded microwave oven provided by this solution passes through the gap between the cavity bottom plate and the shell bottom plate, and the turntable motor is installed in the gap between the cavity bottom plate and the shell bottom plate, so the temperature of the turntable motor can be effectively reduced.

In any of the above technical solutions, preferably, a side air outlet channel and the lower air outlet channel are respectively formed between the two cavity side plates and the two casing side plates, and the casing air outlet It also includes side air outlets located at the left and right ends of the front panel of the housing and communicated with the side air outlet channels.

In this scheme, on the basis of the lower air outlet, side air outlets are opened on both sides of the front plate of the casing, and the air outlet channels on both sides of the front plate of the casing are added through the casing, so that the coverage of the product cooling air passage is enlarged. At the same time, the air outlet effect is improved, which can improve the overall heat dissipation effect of the product.

In any of the above technical solutions, preferably, the embedded microwave oven further comprises: three air guide plates, the three air guide plates are respectively installed on the casing bottom plate and the two casing side plates and the three wind deflectors all extend to the front of the housing front plate, so that the three wind deflectors are located on the outer sides of the lower air outlet and the side air outlet respectively.

The air deflector is located on the outer side of the air outlet of the cavity to prevent the air discharged from the air outlet of the cavity from contacting the cabinet, so as to prevent the moisture in the exhaust from causing damage to the cabinet.

Additional aspects and advantages of the present invention will become apparent in the description section that follows, or will be learned by practice of the present invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic diagram of a side view of the air inlet and outlet principle of an embedded microwave oven provided by an embodiment of the invention;

Fig. 2 is the schematic diagram of the main view of the air inlet and outlet principle of the embedded microwave oven shown in Fig. 1;

Fig. 3 is the exploded structure schematic diagram of embedded microwave oven shown in Fig. 2;

FIG. 4 is a schematic structural view of the cavity shown in FIG. 3 (with the support plate removed);

Fig. 5 is the top sectional structure schematic diagram of the embedded microwave oven shown in Fig. 1 when the microwave function is turned on;

Fig. 6 is the left side sectional structure schematic diagram of the embedded microwave oven shown in Fig. 5;

Fig. 7 is the top sectional structure schematic diagram of the embedded microwave oven shown in Fig. 1 when the microwave function is turned off;

FIG. 8 is a left cross-sectional structural schematic diagram of the embedded microwave oven shown in FIG. 7 .

Wherein, the arrows in Figure 1, Figure 2 and Figures 5 to 8 replace the air, and the corresponding relationship between the reference numerals in Figure 1 to Figure 8 and the names of the components is:

101 Housing front panel, 1011 Housing air inlet, 1012 Lower air outlet, 1013 Side air outlet, 102 Housing top panel, 103 Housing rear cover, 104 Housing bottom panel, 105 Housing side panel, 106 Door body, 107 Control Box, 201 Top Plate Body, 2011 First Air Inlet, 2012 First Air Outlet, 2013 Cavity Air Inlet, 202 Support Plate, 2021 Second Air Inlet, 2022 Second Air Outlet, 203 Cavity Back Cover, 204 Cavity Bottom plate, 205 cavity side plate, 301 cooling fan, 401 hot air motor, 402 computer board, 403 filter board, 404 magnetron, 405 transformer, 406 turntable motor, 501 baffle, 5011 notch, 502 bidirectional motor, 503 gear, 504 rack, 505 first position switch, 506 second position switch, 601 upper heating tube, 701 partition, 702 wind deflector, 703 wind deflector.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific implementation disclosed below. example limitations.

An embodiment of the present invention provides an embedded microwave oven, as shown in FIG. 1 to FIG. 8 , including: a shell, a cavity, a door 106 , a control box 107 , a heat dissipation motor and an electrical device, and the shell includes a shell The front plate 101, the top plate 102 of the casing, the rear cover 103 of the casing, the bottom plate 104 of the casing and the two side plates 105 of the casing are provided with openings on the front plate 101 of the casing; the door body 106 is installed on the front plate 101 of the casing On the front surface of the casing, it is used to control the opening and closing of the front plate 101 of the casing; the control box 107 is installed on the front surface of the front plate 101 of the casing; the cavity is arranged in the casing, and the cavity includes a cavity top plate, a cavity Body rear plate 203, cavity bottom plate 204 and two cavity side walls 205, the front end of the cavity is fixedly connected with the shell front plate 101 and aligned with the opening of the shell front plate 101, and a cooling air is formed between the cavity and the shell The housing front panel 101 is not covered by the door body 106 and the control box 107, and is provided with a housing air inlet 1011 and a housing air outlet that communicate with the cooling air duct; the cooling fan 301 is installed in the cooling air duct and uses Because the air is sucked from the air inlet 1011 of the casing and supplied to the air outlet of the casing through the cooling air duct; the electrical components are installed in the cooling air duct.

In this solution, a cooling air duct is formed between the shell and the cavity of the embedded microwave oven, and the shell air inlet 1011 and the shell air outlet are both opened on the shell front plate 101, so that the cooling air duct is designed to be completely inside the product, The air in and out is not affected by the size of the cabinet, and the heat dissipation is stable and reliable. Even when the size of the cabinet does not meet the design requirements, a good heat dissipation effect can be achieved to prevent the problem of excessive temperature rise of electrical components, so as to ensure the safety and performance of the product. stability.

The cavity top plate is provided with a cavity air inlet, a cavity air outlet and an opening and closing control assembly, and the opening and closing control assembly is used to control the opening and closing of the cavity air inlet and the cavity air outlet. The embedded microwave oven in the prior art relies on the air inlet or outlet between the body and the cabinet. When the microwave heating function is used, it can only control the switch of the air inlet of the cavity, but cannot control the switch of the air outlet of the cavity. The temperature of the center of the body rises rapidly, and the number of air outlets in the cavity must be controlled, so that the water vapor in the cavity cannot be dissipated. The cooling air duct of the embedded microwave oven provided by this solution is completely inside the product, and the air is discharged from the front panel 101 of the shell to ensure that the water vapor discharged from the cavity will not contact the interior of the cabinet, so as to avoid damage to the cabinet. Extend the life of your cabinets.

Specifically, an air inlet channel is formed between the cavity top plate and the casing top plate 102, an air guide channel is formed between the cavity rear plate 203 and the casing rear cover 103, and a lower air outlet channel is formed between the cavity bottom plate 204 and the casing bottom plate 104, The air inlet channel, the air guide channel and the lower air outlet channel are connected in sequence to form a cooling air channel, the control box 107 is located above the door body 106, and a gap is formed between the control box 107 and the door body 106, and the housing air inlet 1011 is aligned with the control box The gap between 107 and the door body 106 is communicated with the air inlet passage. The air outlet of the casing includes an air outlet 1012 under the casing. The air outlet 1012 under the casing is located below the door body 106 and communicates with the lower air outlet passage.

The embedded microwave oven in the prior art usually blows out the air from the gap between the control box and the door, resulting in hot air blowing out from the position of the control box, which affects the user's experience of using the product. In the embedded microwave oven provided by this solution, the air is fed through the gap between the control box 107 and the door body 106, and the air is discharged from the bottom end of the front panel 101 of the housing, so that the air outlet position is far away from the control box 107, so as to ensure that the user is not aware of the control box 107. The operation will not be exposed to hot air, thereby improving the user's experience.

In the above embodiment, the air inlet channel is provided with a partition 701, the partition 701 divides the air inlet channel into a front area and a rear area, and the partition 701 is provided with ventilation holes, and the electrical components include the computer board 402, The filter board 403, the magnetron 404 and the transformer 405, the computer board 402 and the filter board 403 are installed in the front area, and the magnetron 404 and the transformer 405 are installed in the rear area.

During the use of the product, the magnetron 404 and the transformer 405 will generate more heat, while the computer board 402 and the filter board 403 have higher requirements on temperature rise control, and the problem of excessive temperature rise will affect the reliability of the product operation. For this reason, in this scheme, the computer board 402 and the filter board 403 are separated from the heating components such as the magnetron 404 and the transformer 405 by the partition board 701, and the computer board 402 and the filter board 403 are installed in the front area before the partition board 701. The position of the computer board 402 and the filter board 403 is close to the air inlet 1011 of the casing, and the computer board 402 and the filter board 403 are cooled by the low-temperature air that has just been sucked into the casing, and the heating components such as the magnetron 404 and the transformer 405 are installed on the partition plate. In the rear area behind 701, it is on the leeward side of the computer board 402 and the filter board 403. At the same time, under the block of the partition board 701, the rear area where the magnetron 404 and the transformer 405 are located can be greatly reduced. The front area where the board 403 is located transfers heat, so the temperature rise of the computer board 402 and the filter board 403 can be greatly reduced, thereby ensuring the reliability of product operation.

In the above embodiment, the upper heating pipe 601 is installed in the cavity, and the upper heating pipe 601 is installed near the top of the cavity and located below the rear area.

This design increases the distance between the computer board 402, the filter board 403 and the upper heating pipe 601, which can reduce the influence of the heat radiation generated by the upper heating pipe 601 on the computer board 402 and the filter board 403, thereby further reducing the computer board 402. , The temperature rise of the filter board 403 improves the reliability of product operation.

In the above-described embodiment, the cooling fan 301 is installed in the front area.

Existing products usually adopt the structure with the cooling fan at the rear. In this way, the distance between the cooling fan and the product air inlet is too large, so that the negative pressure generated at the position of the product air inlet is low, and the amount of sucked air is small, and the electrical components cannot be fully cooled. In this solution, the position of the cooling fan 301 is close to the air inlet 1011 of the casing, which greatly shortens the distance between the cooling fan 301 and the air inlet, thereby increasing the negative pressure at the position of the air inlet 1011 of the casing, increasing the air intake volume, and further improving the heat dissipation of the product Effect.

In the above embodiment, preferably, a side air outlet channel connected to the lower air outlet channel is formed between the two cavity side walls 205 and the two housing side panels 105 respectively, and the housing air outlet further includes a side air outlet channel that communicates with the side air outlet channel. The side air outlet 1013 is provided on the front panel 101 of the housing and is located on the left and right sides of the door body 106 .

In this scheme, on the basis of the lower air outlet, side air outlets 1013 are opened on both sides of the front plate 101 of the casing, and the air outlet channels on both sides of the front plate 101 of the casing are added through the casing, so that the cooling air duct of the product is designed to be larger. The coverage area is improved, and the air outlet effect is improved, so that the overall heat dissipation effect of the product can be improved.

Specifically, the top plate of the cavity includes a top plate body 201 and a support plate 202 , the top plate body 201 is sealedly connected with the shell front plate 101 , the cavity rear plate 203 , and the two cavity side walls 205 , and the support plate 202 is installed on the top plate body 201 . On the upper surface, an air inlet channel is formed between the support plate 202 and the casing top plate 102 . The air outlet of the cavity includes a first air outlet 2012 arranged on the top plate body 201 and a second air outlet 2022 arranged on the support plate 202 and opposite to the first air outlet 2012. The air inlet of the cavity includes a second air outlet 2022 arranged on the top plate body 201 The first air inlet 2011 and the second air inlet 2021 arranged on the support plate 202, and the second air inlet 2021 and the second air outlet 2022 are arranged side by side, and the top plate body 201 and the support plate 202 are provided with a first air inlet that communicates with each other. 2011 and the cavity air inlet duct 2013 of the second air inlet 2021, the baffle 501 can control the opening and closing of the second air inlet 2021 and the second air outlet 2022, wherein the first air inlet 2011 is close to the housing front panel 101, and the The second air inlet 2021 and the second air outlet 2022 are located in the rear area. The opening and closing control assembly includes a bidirectional motor 502, a baffle 501, a gear 503, a rack 504, a first position switch 505 and a second position switch 506. The bidirectional motor 502 is electrically connected to the computer board 402, and the gear 503 is fixedly installed on the bidirectional motor 502. On the motor shaft, the rack 504 is fixedly installed on the baffle 501, and the rack 504 is always meshed with the gear 503, so that the bidirectional motor 502 can drive the baffle 501 along the connection between the second air inlet 2021 and the second air outlet 2022. Reciprocating movement in the direction of the line, the baffle 501 is roughly rectangular, and the baffle 501 is provided with a gap 5011 adapted to the second air outlet 2022, the first position switch 505 and the second position switch 506 are respectively electrically connected to the computer board 402, The baffle 501 has a closed position and an open position relative to the cavity top plate. When the baffle 501 is in the closed position, the baffle 501 closes the second air inlet 2021 and the second air outlet 2022 at the same time, and when the baffle 501 reaches the closed position, the second air inlet 2021 and the second air outlet 2022 are closed. A position switch 505 interferes to trigger the first position switch 505. When the baffle 501 is in the open position, the baffle 501 staggers the second air inlet 2021, and the gap 5011 on the baffle 501 is aligned with the second air outlet 2022, so that The cavity air inlet and the cavity air outlet are opened at the same time, and when the baffle 501 reaches the open position, it interferes with the second position switch 506 to trigger the second position switch 506 .

When the product is turned on for microwave heating, as shown in Figures 5 and 6, the two-way motor 502 drives the baffle 501 to move to one side under the control of the computer board 402. When the baffle 501 reaches the open position, the baffle 501 and the second position The switch 506 interferes, triggering the second position switch 506, so that the second position switch 506 sends a trigger signal to the computer board 402, and the computer board 402 controls the bidirectional motor 502 to stop according to the trigger signal, thereby keeping the baffle 501 in the open position, so that the cavity The body air inlet and the cavity air outlet are opened at the same time. Under the action of the cooling motor, the external air enters the air inlet channel through the housing air inlet 1011 to cool the electrical components in the air inlet channel. into the cavity air inlet duct 2013, and then along the cavity air inlet duct 2013 to the position of the first air inlet 2011, and then the first air inlet 2011 enters the cavity. The air entering the first air inlet 2011 will push the air in the cavity to move to the rear end of the cavity, and finally enter the cooling air duct through the first air outlet 2012 and the second air outlet 2022 in sequence, which can prevent the water vapor in the cavity from being trapped in the cooling air duct. The inner surface of the door body 106 is condensed to ensure that the window of the door body 106 is clearly visible, so that the user can see the situation in the cavity. The air does not affect the computer board 402 and the filter board 403 . The air in the air inlet channel that does not enter the second air inlet 2021 and the air returning to the air inlet channel from the second air outlet 2022 will enter the air guiding channel, and then enter the lower air outlet channel and the lower air outlet through the air guiding channel. The side air outlet channel is finally discharged out of the product through the upper and lower air outlets 1012 and the side air outlet 1013 of the housing front panel 101 .

When the product is turned off for microwave heating, as shown in Figures 7 and 8, the bidirectional motor 502 drives the baffle 501 to move in the opposite direction under the control of the computer board 402. When the baffle 501 reaches the closed position, the baffle 501 and the first position switch 505 conflict, trigger the first position switch 505, so that the first position switch 505 sends a trigger signal to the computer board 402, and the computer board 402 controls the bidirectional motor 502 to stop according to the trigger signal, thereby keeping the baffle 501 in the closed position, so that the second position The air inlet 2021 and the second air outlet 2022 are closed at the same time. Under the action of the cooling motor, the external air enters the air inlet channel through the air inlet 1011 of the casing, cools the electrical components in the air inlet channel, then enters the air guide channel from the air inlet channel, and then enters the lower air outlet channel and The side air outlet channel is finally discharged out of the product through the upper and lower air outlets 1012 and the side air outlet 1013 of the housing front panel 101 .

In the above embodiment, two windshields 702 extending in the front-rear direction are provided in the rear area, the magnetron 404, the transformer 405 and the opening and closing control assembly are all located between the two windshields 702, and the partition plate The ventilation holes 701 , the second air inlet and the second air outlet 2022 are all aligned with the area between the two wind deflectors 702 .

In this solution, two wind deflectors 702 are arranged at intervals in the rear area, and both wind deflectors 702 extend in the front-rear direction. In this way, the width of the air duct in the rear area is reduced, and the electrical components in the rear area are reduced. Both are installed on the two air baffles 702, so that the air flows through the electrical components in a concentrated manner, so that the heat dissipation effect can be improved.

In the above embodiment, one of the two wind shields 702 is provided with a wind shield surface protruding between the two wind shield plates 702 , and the wind shield surface is located behind the second air inlet 2021 .

Blocking the air flow by the wind blocking surface can increase the air intake volume of the second air inlet 2021, thereby improving the ventilation effect of the cavity and effectively discharging the water vapor in the cavity.

In the above embodiment, the electrical device further includes a hot air motor 401, and the hot air motor 401 is installed in the air guide channel.

The hot air component is usually installed behind the cavity of the embedded microwave oven, and the heat dissipation structure of the existing product cannot effectively dissipate the heat of the hot air motor. Therefore, the hot air motor must be wrapped with a thick thermal insulation material, and a heat dissipation fan of the hot air motor needs to be added. As a result, the hot air assembly occupies a large space. In order to make the product meet the specifications, the volume of the cavity can only be reduced, so that the volume of the product is damaged. The cooling air duct of the embedded microwave oven provided by this solution passes through the gap between the cavity rear plate 203 and the shell rear cover 103, and the hot air motor 401 is installed in the gap between the cavity rear plate 203 and the shell rear cover 103, The temperature of the turntable motor 406 can be effectively reduced, so the thickness of the thermal insulation layer of the hot air motor 401 can be reduced and the cooling fan of the hot air motor 401 can be removed, thereby increasing the volume of the cavity and increasing the volume of the product.

In the above embodiment, the electrical device further includes a turntable motor 406, and the turntable motor 406 is installed in the air outlet channel.

When the lower heating pipe is installed at the bottom of the cavity, the heat radiation generated by the lower heating pipe has a great influence on the turntable motor 406 , and the existing products cannot effectively dissipate heat from the turntable motor 406 . The cooling air duct of the embedded microwave oven provided by this solution passes through the gap between the cavity bottom plate 204 and the housing bottom plate 104, and the turntable motor 406 is installed in the gap between the cavity bottom plate 204 and the shell bottom plate 104, so it can effectively reduce the The temperature of the turntable motor 406 .

In the above-mentioned embodiment, the embedded microwave oven further includes: three air guide plates 703, the three air guide plates 703 are respectively installed on the front ends of the housing bottom plate 104 and the two housing side plates 105, and the three air guide plates 703 are respectively 703 all extend to the front of the front panel 101 of the housing, so that the three air guide plates 703 are located at the outer sides of the lower air outlet 1012 and the side air outlet 1013 respectively.

The air deflector 703 is located outside the air outlet of the cavity, so as to prevent the air discharged from the air outlet of the cavity from contacting the cabinet, so as to prevent moisture in the exhaust from damaging the cabinet.

In the description of the present invention, the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "left", "right", etc. are based on the orientations or positional relationships shown in the accompanying drawings, It is only for the convenience of describing the present invention and simplifying the description, not to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present invention, the terms "first" and "second" are only used for the purpose of description, and should not be construed as indicating or implying relative importance, unless otherwise explicitly specified and limited; the terms "connection", " "Installation" and "fixing" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "specific embodiment", etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in the present specification at least one embodiment or example of the invention. In the present specification, schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, the terms "connected", "installed", "fixed", etc. should be understood in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; Directly connected or indirectly connected through an intermediary. For those of ordinary skill in the field of the present invention, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art of the present invention, various modifications and changes may be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (14)

1. an embedded microwave oven, is characterized in that, comprises: a casing, the casing comprises a casing front plate, a casing top plate, a casing rear cover, a casing bottom plate and two casing side plates, and the casing front plate is provided with an opening; a door body, mounted on the front surface of the front panel of the housing, for controlling the opening and closing of the opening of the front panel of the housing; a control box, mounted on the front surface of the front panel of the housing; A cavity is arranged in the casing, the cavity includes a cavity top plate, a cavity rear plate, a cavity bottom plate and two cavity side plates, and the front end of the cavity is fixedly connected with the casing front plate It is aligned with the opening of the front panel of the housing, a cooling air duct is formed between the cavity and the housing, and the position of the front panel of the housing that is not covered by the door and the control box is provided with a cooling air duct. a housing air inlet and a housing air outlet communicating with the cooling air duct; a cooling fan, installed in the cooling air duct, for inhaling air from the housing air inlet and supplying air to the housing air outlet through the cooling air duct; electrical components, installed in the cooling air duct; The cavity top plate is provided with a cavity air inlet, a cavity air outlet and an opening and closing control assembly, and the opening and closing control assembly is used to control the opening and closing of the cavity air inlet and the cavity air outlet; An air inlet channel is formed between the cavity top plate and the casing top plate; a partition plate is arranged in the air inlet channel, and the partition plate divides the air inlet channel into a front area and a rear area; the The opening and closing control assembly includes a bidirectional motor and a baffle; The cavity top plate includes a top plate body and a support plate, the top plate body is sealedly connected with the casing front plate, the cavity rear plate, and the two cavity side plates, and the support plate is installed on the On the upper surface of the top plate body, the air inlet channel is formed between the support plate and the casing top plate; The cavity air outlet includes a first air outlet arranged on the top plate body and a second air outlet arranged on the support plate and opposite to the first air outlet, and the cavity air inlet includes an air outlet. The first air inlet on the top plate body and the second air inlet on the support plate, the top plate body and the support plate are connected with the first air inlet and the second air inlet. The cavity air inlet duct of the air outlet, the baffle can control the opening and closing of the second air inlet and the second air outlet, Wherein, the first air inlet is close to the front panel of the housing, and the second air inlet and the second air outlet are located in the rear area. 2. embedded microwave oven according to claim 1, is characterized in that, An air guide channel is formed between the cavity rear plate and the shell rear cover, a lower air outlet channel is formed between the cavity bottom plate and the shell bottom plate, and the air inlet channel, the air guide channel and the The lower air outlet passages are connected in sequence to form a cooling air passage, the control box is located above the door body, and a gap is formed between the control box and the door body, and the housing air inlet is aligned with the control box The gap between the door body and the door body is communicated with the air inlet channel. The air outlet of the casing includes an air outlet under the casing, and the lower air outlet of the casing is located under the door body and communicates with the lower air outlet. channel connection. 3. embedded microwave oven according to claim 2, is characterized in that, The baffle is provided with ventilation holes, the electrical device includes a computer board, a filter board, a magnetron and a transformer, the computer board and the filter board are installed in the front area, the magnetron and the transformer is installed in the rear area. 4. embedded microwave oven according to claim 3, is characterized in that, An upper heating pipe is installed in the cavity, and the upper heating pipe is installed near the top of the cavity and below the rear area. 5. embedded microwave oven according to claim 3, is characterized in that, The cooling fan is installed in the front area. 6. The embedded microwave oven according to claim 3, characterized in that, The two-way motor is electrically connected to the computer board, and the computer board is used to control the operation of the two-way motor, and the baffle is connected to the motor shaft of the two-way motor, so that the two-way motor can drive the baffle The plate moves relative to the cavity top plate, and the baffle plate has a closed position and an open position relative to the cavity top plate. When the baffle plate is in the closed position, the baffle plate simultaneously connects the cavity air inlet and the cavity. The cavity air outlet is closed, and when the baffle is in the open position, the baffle avoids the cavity air inlet and the cavity air outlet at the same time, so that the cavity air inlet and the cavity air outlet are closed. The body air outlet is opened at the same time. 7. The embedded microwave oven according to claim 6, characterized in that, The opening and closing control assembly further includes a gear and a rack, the gear is fixedly mounted on the motor shaft of the bidirectional motor, the rack is fixedly mounted on the baffle, and the rack is always meshed with the gear . 8. The embedded microwave oven according to claim 6, characterized in that, The opening and closing control assembly further includes a first position switch and a second position switch, the first position switch and the second position switch are respectively electrically connected to the computer board, and the baffle plate is connected to the computer board when it reaches the closed position. The first position switch interferes to trigger the first position switch, and when the baffle plate reaches the open position, it interferes with the second position switch to trigger the second position switch. 9. The embedded microwave oven according to claim 6, characterized in that, The rear area is provided with two windshields extending in the front-rear direction, the magnetron, the transformer and the opening and closing control assembly are all located between the two windshields, and the The ventilation hole of the partition plate, the second air inlet and the second air outlet are all aligned with the area between the two wind deflectors. 10. The embedded microwave oven according to claim 9, characterized in that, One of the two wind shields is provided with a wind shield surface protruding between the two wind shield plates, and the wind shield surface is located behind the second air inlet. 11. The built-in microwave oven according to any one of claims 2 to 10, characterized in that, The electrical device further includes a hot air motor, and the hot air motor is installed in the air guide channel. 12. The built-in microwave oven according to any one of claims 2 to 10, characterized in that, The electrical device further includes a turntable motor, and the turntable motor is installed in the lower air outlet channel. 13. The built-in microwave oven according to any one of claims 2 to 10, characterized in that, A side air outlet channel corresponding to the lower air outlet channel is formed between the two cavity side panels and the two housing side panels, respectively. A side air outlet communicated with the side air outlet channel. 14. The embedded microwave oven of claim 13, further comprising: three air guide plates, which are respectively installed on the front end of the bottom plate of the casing and the two side plates of the casing, and the three wind guide plates all extend to the front plate of the casing front, so that the three wind deflectors are located at the outer sides of the lower air outlet and the side air outlet respectively.

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