CN-121990171-A - Cruise power module heat dissipation device and method and aircraft

Abstract

The invention provides a heat dissipation device and method for a cruise power module and an aircraft, which belong to the technical field of aircrafts, and are characterized in that a heat exchanger is arranged in a power arm body at the inner end of a cruise motor by combining the pneumatic layout characteristics of an electric vertical take-off and landing aircraft through the structural design of a propeller fairing, a heat exchanger and an internal hot air exhaust pipeline, and the air-entraining fan blades are arranged on the inner wall of the propeller fairing, so that the propeller fairing is synchronously driven to rotate when the propeller rotates, the air-entraining fan blades are driven to rotate, external cold air can be pumped into the power arm body under the condition of no airspeed, the cold air flows through the cruise motor and the heat exchanger in a combination manner, the hot air after heat exchange is exhausted out of the power arm body through the internal hot air exhaust pipeline, the heat exchange efficiency is greatly improved, the cruising resistance can be reduced through the curved propeller fairing, and the heat exchange device has the advantages of high heat exchange efficiency, light structure weight, cruising resistance reduction and the like.

Inventors

• LIU SHIYI
• Shen Qiuyi
• LI YANFEI

Assignees

• 上海御风未来航空科技有限公司

Dates

Publication Date

20260508

Application Date

20241105

Claims (10)

1. 1. A heat dissipation device of a cruising power module is characterized by comprising a propeller fairing, a heat exchanger and an internal hot air exhaust pipeline, wherein, The propeller fairing is a front narrow and rear wide von-karman curve fairing, the propeller fairing is arranged on a propeller, and blades of the propeller are positioned outside the propeller fairing; the rear end of the propeller fairing is fixed at the end part of a propeller hub of the propeller, and the inner wall of the front end of the propeller fairing is provided with air entraining blades; the heat exchanger is arranged in the power arm body and comprises a first heat exchanger and a second heat exchanger which are respectively positioned at two sides of the inner end of the cruising motor, the first heat exchanger and the second heat exchanger are connected in series through a first cooling liquid conduit, a hot liquid inlet and a cold liquid outlet of the heat exchanger are respectively connected with a cooling liquid outlet pipe and a cooling liquid inlet pipe of the cruising motor through a second cooling liquid conduit, and a hot gas channel is formed among the first heat exchanger, the second heat exchanger and the inner side wall of the power arm body; The air inlet end of the internal hot air exhaust pipeline is in butt joint with the hot air channel, and the air outlet end of the internal hot air exhaust pipeline is in butt joint with a hot air outlet arranged on the side wall of the power arm body.
2. 2. The cruise power module heat sink according to claim 1, characterized in that, The propeller fairing is provided with a propeller extension opening, and blades of the propeller penetrate through the propeller extension opening and are positioned outside the propeller fairing.
3. 3. The cruise power module heat sink according to claim 1, characterized in that, The internal hot air exhaust pipeline is fixed inside the power arm body through an exhaust pipeline mounting support.
4. 4. A cruise power module heat sink according to claim 3, wherein, The exhaust pipeline mounting support is detachably fixed inside the power arm body.
5. 5. The cruise power module heat sink according to claim 1, characterized in that, The cruise motor is fixed inside the power arm body through a cruise motor mounting bracket.
6. 6. The cruise power module heat sink according to claim 5, wherein, The cruise motor mounting bracket is detachably fixed inside the power arm body.
7. 7. The cruise power module heat sink according to claim 1, characterized in that, An upper maintenance opening is arranged at the upper part of the power arm body, an upper maintenance opening cover is arranged at the upper maintenance opening, and/or, A lower maintenance opening is arranged at the lower part of the power arm body, and a lower maintenance opening cover is arranged at the lower maintenance opening.
8. 8. The cruise power module heat sink according to claim 1, characterized in that, The hot gas exhaust port is arranged behind the front expansion area of the power arm body.
9. 9. A method for dissipating heat from an aircraft cruise power module, characterized in that the cruise power module is dissipated by a cruise power module heat dissipating device according to any one of claims 1-8, comprising the steps of: Step S1, when an aircraft is ready to start gesture conversion or normal cruising flight, the aircraft sends a rotation instruction to a cruising motor; S2, the cruise motor rotates according to the rotation instruction and drives the propeller and the propeller fairing to rotate so as to drive the air entraining fan blades to synchronously rotate; S3, cooling liquid with the temperature increased after cooling enters the heat exchanger through the second cooling liquid guide pipe, exchanges heat through the heat exchanger and then circulates back to the cooling liquid inlet pipe of the cruise motor through the second cooling liquid guide pipe; S4, introducing air flow into the power arm body when the air entraining fan blades synchronously rotate, enabling the air flow to pass through the cruise motor, enabling the air flow to pass through the hot air channel, taking away heat generated by the fins of the first heat exchanger and the second heat exchanger, and discharging the heat from the hot air exhaust port to the outside of the power arm body through the internal hot air exhaust pipeline.
10. 10. An electric vertical take-off and landing aircraft comprising an aircraft body, wherein a cruise power module heat sink according to any one of claims 1 to 8 is provided on the aircraft body.

Description

Cruise power module heat dissipation device and method and aircraft Technical Field The invention relates to the technical field of aircrafts, in particular to a cruise power module heat dissipation device and method and an aircraft. Background Evtol (electric vertical takeoff and landing aircraft) is a new type of aircraft that stems from the need for efficient, convenient and environmentally friendly clean urban air traffic. The traditional helicopter has the problems of high noise, high cost, complex operation and the like. evtol combine electric technology to reduce noise and operation and maintenance costs by electric drive. Because of having the capability of vertical lifting, the vehicle can lift in a narrow space without a special runway. The system integrates the technologies of aviation, electric and intelligent control and other fields, provides a new solution for the scenes of urban air travel, logistics, emergency rescue and the like, and has wide application scenes. Because the power of the large evtol is a high-power motor, the heat dissipation device is not suitable for natural heat dissipation, and the existing main heat dissipation schemes are air cooling heat dissipation and liquid cooling heat dissipation. The cooling liquid cooling heat dissipation mode is more direct and more effective, and the cooling liquid can be directly contacted with the area with the most serious heat generation, so that the heat is brought to the heat exchanger for heat exchange through the cooling pipeline to dissipate the heat. The current cruising power module generally adopts a heat dissipation method, and a heat dissipation fin or a heat dissipation fan is required to be exposed outside a power arm, so that the purpose of heat exchange is achieved by utilizing air flow which passes through the fin or is introduced by utilizing the heat dissipation fan. The heat dissipation method can cause certain flight resistance when the aircraft is cruising and flying, and the heat exchange efficiency is low. Disclosure of Invention In view of the above problems, the present invention aims to provide a heat dissipation device and method for a cruise power module and an aircraft, so as to solve the problems that in the prior art, a heat dissipation fin or a heat dissipation fan is required to be exposed outside a power arm, and the heat exchange is achieved by using air flow passing through the fin or air flow introduced by the heat dissipation fan, so that a certain flight resistance is caused when the aircraft is in cruise flight, and the heat exchange efficiency is low. The invention provides a heat abstractor of a cruising power module, which comprises a propeller fairing, a heat exchanger and an internal hot air exhaust pipeline, wherein, The propeller fairing is a front narrow and rear wide von-karman curve fairing, the propeller fairing is arranged on a propeller, and blades of the propeller are positioned outside the propeller fairing; the cruising motor of the propeller is arranged in the power arm body; the rear end of the propeller fairing is fixed at the end part of a propeller hub of the propeller; the heat exchanger is arranged in the power arm body and comprises a first heat exchanger and a second heat exchanger which are respectively positioned at two sides of the inner end of the cruise motor, the first heat exchanger and the second heat exchanger are connected in series through a first cooling liquid guide pipe, a hot liquid inlet and a cold liquid outlet of the heat exchanger are respectively connected with a cooling liquid outlet pipe and a cooling liquid inlet pipe of the cruise motor through a second cooling liquid guide pipe, and a hot gas channel is formed among the first heat exchanger, the second heat exchanger and the inner side wall of the power arm body; The air inlet end of the internal hot air exhaust pipeline is in butt joint with the hot air channel, and the air outlet end of the internal hot air exhaust pipeline is in butt joint with a hot air outlet arranged on the side wall of the power arm body. In addition, the propeller fairing is provided with a propeller extension opening, and the blades of the propeller penetrate through the propeller extension opening and are positioned outside the propeller fairing. In addition, preferably, the internal hot air exhaust pipeline is fixed inside the power arm body through an exhaust pipeline mounting support. Furthermore, preferably, the exhaust duct mounting support is detachably fixed inside the power arm body. Furthermore, it is preferable that the cruise motor is fixed inside the power arm body by a cruise motor mounting bracket. Furthermore, preferably, the cruise motor mounting bracket is detachably fixed inside the power arm body. In addition, the power arm is preferably provided with an upper maintenance port at the upper part thereof, an upper maintenance port cover at the upper maintenance port, and/or a lower maintenance port at the l