Thermal control device and method for airborne equipment
By using a thermal control device with a deformation gauge in the aircraft equipment, the thermal expansion effect of the deformation gauge can be used to automatically turn on and off the heating switch, solving the problem that the equipment cannot automatically control the heating function in a low-temperature environment, and automatic heating control and active thermal management are realized.
Patent Information
- Application Number
- CN202411947401.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-28
AI Technical Summary
The heating function of existing aircraft equipment cannot be automatically controlled in a low temperature environment, resulting in the equipment being in a low temperature state for a long time, affecting normal operation.
It adopts a thermal control device of an on-board equipment, including a heating switch, a heating chassis, a heating power supply, a heating relay, a cooling fan and a cooling system control module. The heating switch is composed of a first conductive sheet, a second conductive sheet and a deformation gauge. The deformation gauge is made of materials with different thermal expansion coefficients. When the temperature is lower than the normal working temperature, the deformation gauge is bent so that the second conductive sheet comes into contact with the first conductive sheet, realizing the automatic on-off of the heating switch.
It realizes automatic on and off of the heating switch, completes automatic heating control without active control and intervention, reduces equipment failure rate, and realizes active thermal management of electrical equipment.
Smart Images
Figure CN119729916A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of airborne thermal control equipment, and in particular to a thermal control device and method for airborne equipment. Background Art
[0002] In the prior art, with the development of aircraft electrical, the power supply system becomes more complex, the power distribution equipment increases, and is placed in every corner of the aircraft. In many cases, because the electrical equipment is too close to the aircraft skin, when the aircraft environment thermal regulation capacity is insufficient, the power supply of air conditioners, fans and other equipment causes the thermal regulation equipment to be unable to play a regulating role. Especially when the aircraft is powered on after being soaked in low temperature in high-altitude cold areas, it will cause the equipment to operate under low temperature tolerance for too long, which will have a serious impact on the normal operation of the equipment. Therefore, it has become an urgent problem to develop a low-temperature thermal control device for aircraft equipment. The heating function of the equipment at low temperature needs to be as simple and reliable as possible to achieve automatic thermal control and reduce the equipment failure rate. Summary of the invention
[0003] The purpose of the present invention is to provide a thermal control device and method for airborne equipment, which can realize automatic on and off of the heating switch and complete automatic heating control. It does not require active control and intervention, and does not require an additional control system to control the heat dissipation and heating mode of the electrical equipment, thereby realizing active thermal management of the electrical equipment.
[0004] To achieve the above-mentioned purpose, the present invention provides a thermal control device for airborne equipment, comprising a heating switch, a heating chassis, a heating power supply, a heating relay, a cooling fan and a cooling system control module; the heating relay is electrically connected to the heating chassis, the heating power supply, the heating switch and the cooling system control module respectively, the other end of the heating switch is grounded, and the cooling fan is electrically connected to the cooling system control module; the heating switch comprises a first conductive sheet, a second conductive sheet and a deformation sheet.
[0005] Preferably, the second conductive sheet is attached to the deformable sheet and corresponds to the position of the first conductive sheet, and the second conductive sheet is grounded.
[0006] Preferably, the deformable sheet is formed by pasting together two deformable thermosensitive materials with different thermal expansion coefficients.
[0007] Preferably, a heating resistor is provided in the heating chassis.
[0008] Preferably, the heat dissipation fan is mounted on one side of the heating chassis.
[0009] Preferably, two corresponding deformable thermosensitive materials with different thermal expansion coefficients are selected according to the temperature required for normal operation of the airborne equipment to make the deformable sheet; when the temperature of the airborne equipment is lower than the normal operating temperature, the two deformable thermosensitive materials of the deformable sheet undergo different degrees of volume contraction, causing the deformable sheet to bend, thereby driving the second conductive sheet to contact the first conductive sheet, closing the heating switch, connecting the heating relay, connecting the heating circuit, heating the heating chassis, suppressing the heat dissipation function, and controlling the heat dissipation fan to stop working by the heat dissipation system control module; when the temperature of the airborne equipment is higher than the normal operating temperature, the volume contraction degree of the two deformable thermosensitive materials of the deformable sheet decreases, causing the bending degree of the deformable sheet to decrease, thereby separating the second conductive sheet from the first conductive sheet, disconnecting the heating switch, and then disconnecting the heating relay, disconnecting the heating circuit, and stopping the heating of the heating chassis, releasing the heat dissipation function suppression, and controlling the heat dissipation system control module to control the working state of the heat dissipation fan according to the set temperature threshold.
[0010] Therefore, the present invention adopts the above-mentioned thermal control device and method of airborne equipment to realize automatic on and off of the heating switch and complete automatic heating control. It does not require active control and intervention, and does not require an additional control system to control the heat dissipation and heating mode of the electrical equipment, thereby realizing active thermal management of the electrical equipment.
[0011] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the composition structure of an embodiment of a thermal control device for airborne equipment of the present invention; Figure 2 It is a schematic diagram of the appearance of a heat dissipation fan of an embodiment of a thermal control device for airborne equipment of the present invention; Figure 3 The present invention is a flow chart of a thermal control method of a thermal control device for airborne equipment.
[0013] Reference numerals 10. Heating switch; 101. First conductive sheet; 102. Second conductive sheet; 103. Deformable sheet; 20. Heating chassis; 201. Heating resistor; 30. Heating power supply; 40. Heating relay; 50. Cooling fan; 60. Cooling system control module. DETAILED DESCRIPTION
[0014] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.
[0015] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0016] Embodiment 1 like Figure 1 As shown, the present invention provides a thermal control device for airborne equipment, including a heating switch 10, a heating chassis 20, a heating power supply 30, a heating relay 40, a cooling fan 50 and a cooling system control module 60.
[0017] The heating switch 10 includes a first conductive sheet 101, a second conductive sheet 102 and a deformable sheet 103. The second conductive sheet 102 is attached to the deformable sheet 103 and corresponds to the position of the first conductive sheet 101. In this embodiment, the second conductive sheet 102 is located directly below the first conductive sheet 101, and one end of the second conductive sheet 102 is grounded. The deformable sheet 103 is made of two deformable thermosensitive materials with different thermal expansion coefficients. Due to the difference in thermal expansion coefficients of the two deformable thermosensitive materials, under certain temperature conditions, the volume shrinkage of the upper deformable thermosensitive material is greater than that of the lower deformable thermosensitive material, thereby causing the deformable sheet 103 to bend, driving the second conductive sheet 102 to contact the upper first conductive sheet 101.
[0018] A heating resistor 201 is provided in the heating chassis 20, and the device can be heated when the heating circuit is turned on. The function of the heating power supply 30 is to provide energy for the heating control and heat dissipation control of the device.
[0019] The heating relay 40 is electrically connected to the heating chassis 20, the heating power supply 30, the heating switch 10, and the cooling system control module 60, respectively, and mainly executes the heating control signal sent by the heating switch 10 to complete the turning on or off of the heating function and the inhibition or release of the cooling function.
[0020] The cooling fan 50 is electrically connected to the cooling system control module 60 and mainly performs the cooling control function. Figure 2As shown, the heat dissipation fan 50 is mounted on one side of the heating chassis 20 to facilitate heat dissipation for the onboard equipment through the heat dissipation fan 50.
[0021] In the actual application process, two corresponding deformation thermosensitive materials with different thermal expansion coefficients are selected according to the temperature required for the normal operation of the airborne equipment to make the deformation sheet 103. For example, when the normal operating temperature of the airborne equipment is between -40°C and -15°C, it is necessary to have a heating function. The selection of the two deformation thermosensitive materials of the deformation sheet 103 should meet the following requirements: when the minimum temperature of the airborne equipment is not lower than -40°C and the maximum temperature is not higher than -15°C, it can ensure that the deformation sheet 103 is fully bent, thereby driving the second conductive sheet 102 to contact the first conductive sheet 101; when the temperature of the airborne equipment is higher than -15°C, it can ensure that the bending degree of the deformation sheet 103 is reduced, thereby separating the second conductive sheet 102 from the first conductive sheet 101.
[0022] like Figure 3 As shown, the thermal control method of the thermal control device of this embodiment is as follows: when the airborne equipment is in a low temperature state and needs to be heated, the two deformable thermosensitive materials of the deformable sheet 103 undergo different degrees of volume contraction, causing the deformable sheet 103 to bend, thereby driving the second conductive sheet 102 to contact the first conductive sheet 101, so that the heating switch 10 is closed, the heating relay 40 is turned on, the heating circuit is turned on, the heating chassis 20 is heated, the heating function is turned on, and the heat dissipation function is suppressed; when the temperature of the airborne equipment is higher than the normal working temperature, the volume contraction degree of the two deformable thermosensitive materials of the deformable sheet 103 is reduced, resulting in a reduction in the bending degree of the deformable sheet 103, so that the second conductive sheet 102 is separated from the first conductive sheet 101, the heating switch 10 is disconnected, and then the heating relay 40 is disconnected, so that the heating circuit is disconnected, the heating chassis 20 stops heating, and the heat dissipation function is suppressed, allowing the heat dissipation system control module 60 to control the working state of the heat dissipation fan 50 according to the set temperature threshold, and turn on the heat dissipation function as needed, such as: when the temperature is higher than 50°C, the heat dissipation system control module 60 controls the heat dissipation fan 50 to enter the working state.
[0023] Therefore, the present invention adopts the above-mentioned thermal control device and method of airborne equipment to realize automatic on and off of the heating switch and complete automatic heating control. It does not require active control and intervention, and does not require an additional control system to control the heat dissipation and heating mode of the electrical equipment, thereby realizing active thermal management of the electrical equipment.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.
Claims
1. A thermal control device for airborne equipment, characterized in that: It includes a heating switch, a heating chassis, a heating power supply, a heating relay, a cooling fan and a cooling system control module; the heating relay is electrically connected to the heating chassis, the heating power supply, the heating switch and the cooling system control module respectively, the other end of the heating switch is grounded, and the cooling fan is electrically connected to the cooling system control module; the heating switch includes a first conductive sheet, a second conductive sheet and a deformation sheet.
2. A thermal control device for airborne equipment according to claim 1, characterized in that: The second conductive sheet is attached to the deformable sheet and corresponds to the position of the first conductive sheet. The second conductive sheet is grounded.
3. The thermal control device for airborne equipment according to claim 1, characterized in that: The deformable sheet is formed by pasting two deformable thermosensitive materials with different thermal expansion coefficients.
4. The thermal control device for airborne equipment according to claim 1, characterized in that: A heating resistor is arranged in the heating chassis.
5. The thermal control device for airborne equipment according to claim 1, characterized in that: The heat dissipation fan is mounted on one side of the heating chassis.
6. A thermal control method for a thermal control device of an airborne device according to any one of claims 1 to 5, characterized in that: According to the temperature required for the normal operation of the airborne equipment, two corresponding deformable thermosensitive materials with different thermal expansion coefficients are selected to make a deformable sheet. When the temperature of the airborne equipment is lower than the normal operating temperature, the two deformable thermosensitive materials of the deformable sheet undergo different degrees of volume contraction, causing the deformable sheet to bend, thereby driving the second conductive sheet to contact the first conductive sheet, so that the heating switch is closed, the heating relay is turned on, the heating circuit is turned on, the heating chassis is heated, the heat dissipation function is suppressed, and the heat dissipation system control module controls the heat dissipation fan to stop working; when the temperature of the airborne equipment is higher than the normal operating temperature, the volume contraction degree of the two deformable thermosensitive materials of the deformable sheet is reduced, resulting in a decrease in the bending degree of the deformable sheet, so that the second conductive sheet is separated from the first conductive sheet, the heating switch is disconnected, and then the heating relay is disconnected, the heating circuit is disconnected, the heating chassis stops heating, the heat dissipation function is released, and the heat dissipation system control module controls the working state of the heat dissipation fan according to the set temperature threshold.