Microwave cooking device

• US 9,918,358 B2
• Filed: 09/25/2015
• Issued: 03/13/2018
• Est. Priority Date: 12/30/2014
• Status: Active Grant

• Current Assignee: GuangDong Midea Kitchen Appliances Manufacturing Co., Ltd., Midea Group Co., Ltd
• Original Assignee: GuangDong Midea Kitchen Appliances Manufacturing Co., Ltd., Midea Group Co., Ltd
• Inventors: Cho, Jaeman, Ling, Qihong, Mao, Yongnan, An, Mingbo
• Primary Examiner(s): Ross, Dana
• Assistant Examiner(s): Harvey, Brandon
• Application Number:
  US14/866,162
• Publication Number:
  US 20160192445A1
• Time in Patent Office: 900 Days
• Field of Search: 219757
• CPC Class Codes: F04D 29/281 for fans or blowers
• CPC Class Codes: F04D 29/4213 suction ports
• CPC Class Codes: F04D 29/4226 Fan casings
• CPC Class Codes: F04D 29/4246 comprising more than one outlet
• CPC Class Codes: H05B 6/642 Cooling of the microwave components and related air circulation systems H05B6/6473 takes precedence

Abstract

A microwave oven includes a shell defining a cooling air inlet and a cooling air outlet therein; a compartment defining a cavity, nested in the shell and defining an open front end, a receiving space being defined between a rear plate of the compartment and a rear plate of the shell; a first electric member and a second electric member disposed in the receiving space respectively; and a fan disposed in the receiving space, defining a first air inlet, a second air inlet, a first air outlet communicated with the first air inlet to define a first air blowing channel, and a second air outlet communicated with the second air inlet to define a second air blowing channel, the fan being configured to cool the first electric member via the first air blowing channel and to cool the second electric member via the second air blowing channel.

Claims

1. A microwave oven, comprising:

a shell defining a cooling air inlet and a cooling air outlet therein;

a compartment defining a cavity, nested in the shell and defining an open front end, a receiving space being defined between a rear plate of the compartment and a rear plate of the shell, an air intake duct being formed between a side plate of the shell and a side plate of the compartment and communicated with the cooling air inlet;

a first electric member and a second electric member disposed in the receiving space respectively; and

a fan disposed in the receiving space, defining a first air inlet, a second air inlet opposite to the first air inlet, a first air outlet communicated with the first air inlet to define a first air blowing channel, and a second air outlet communicated with the second air inlet to define a second air blowing channel, the first air blowing channel being disposed independently of the second air blowing channel, the fan being configured to cool the first electric member via the first air blowing channel and to cool the second electric member via the second air blowing channel;

a compartment air inlet formed in the rear plate of the compartment, a compartment air outlet formed in the compartment, and wherein the microwave oven further comprises a front air guiding plate defining an end adjacent to and opposite to the first air outlet, and extending in a direction away from the first air outlet, a first air duct is formed between the front air guiding plate and the rear plate of the compartment and communicated with the compartment air inlet, and a second air duct is formed behind the front air guiding plate and opposite to the first electric member.

2. The microwave oven according to claim 1, wherein the fan further comprises a third air outlet, an opening direction of the third air outlet is different from the opening direction of the first air outlet and the opening direction of the second air outlet, the second air inlet is communicated with the third air outlet to define a third air blowing channel, and the microwave oven further comprises a third electric member, and the fan is configured to cool the third electric member via the third air blowing channel.

3. The microwave oven according to claim 2, wherein an opening of the first air outlet faces leftward or rightward, the first electric member is located at a left side or a right side of the first air outlet, an opening of the second air outlet faces downward, the second electric member is located below the second air outlet, an opening of the third air outlet faces upward, and the third electric member is located above the third air outlet.

4. The microwave oven according to claim 3, wherein the second electric member is disposed on a bottom plate of the shell, a part of a top plate of the compartment is backward extended beyond the rear plate of the compartment, and the third electric member is disposed on the part of the top plate of the compartment.

5. The microwave oven according to claim 1, further comprising:

a rear air guiding plate defining an end adjacent to the first air outlet, and extending in the direction away from the first air outlet, the second air duct being formed between the front air guiding plate and the rear air guiding plate.

6. The microwave oven according to claim 5, wherein the front air guiding plate comprises:

an air guiding plate body extending in a left-right direction, the first air duct being formed between the air guiding plate body and the rear plate of the compartment; and

an arc-shaped plate defining a front end connected with the air guiding plate body, and extending backward from the air guiding plate body, the second air duct being formed between the air guiding plate body, the arc-shaped plate and the rear air guiding plate.

7. The microwave oven according to claim 1, wherein the compartment air outlet is formed in a top plate of the compartment, the microwave oven further comprises an air guiding shield disposed on the top plate of the compartment, a third air duct is formed between the air guiding shield and the top plate of the compartment and extends in a front-rear direction, and a front part of the third air duct is communicated with the compartment air outlet.

8. The microwave oven according to claim 2, wherein the cooling air inlet is formed in a bottom plate of the shell, and located between the side plate of the shell and the side plate of the compartment, and the microwave oven further comprises a fourth electric member located between the side plate of the shell and the side plate of the compartment.

9. The microwave oven according to claim 8, wherein the first electric member is a magnetron, the second electric member is a transformer, the third electric member is a filter board, and the fourth electric member is a high-voltage capacitor.