Plateau self-adaptive device for volatile fuel heater
Patent Information
- Application Number
- CN202521349717.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-06-30
AI Technical Summary
Volatile fuel heaters in high-altitude areas may experience malfunctions such as dripping oil, smoking, and failure to ignite due to changes in altitude. Existing sensors cannot accurately measure altitude, causing the heaters to malfunction. This is especially problematic in areas far from repair stations, such as Tibet, where rescue efforts are difficult and costly.
Design a high-altitude adaptive device for a volatile fuel heater. It uses an STM32 microcontroller and an altitude sensor to measure the altitude in real time and adjust the working cycle of the oil pump through the microcontroller to ensure complete combustion of fuel. The device includes a controller motherboard, housing and waterproof connectors to achieve normal operation across the entire altitude range.
It achieves normal operation across the entire altitude range, has a simple structure, is easy to install, can be retrofitted, and automatically adjusts the oil volume to ensure the heater operates normally in high-altitude areas, reducing malfunctions and rescue needs.
Smart Images
Figure CN224931776U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of volatile fuel oil heater technology, and in particular to a high-altitude adaptive device for volatile fuel oil heaters. Background Technology
[0002] Currently, existing volatile fuel heaters are divided into two main categories: volatile water heaters and volatile air heaters. Volatile water heaters are widely used in construction machinery, trucks, and light passenger vehicles for low-temperature engine starting, windshield defrosting, and passenger compartment heating; volatile air heaters are also used in construction machinery, trucks, and light passenger vehicles for windshield defrosting and passenger compartment heating. With the booming development of the transportation industry and people's increasing demands for comfort, air conditioning in summer and heating in winter have become essential equipment for vehicles.
[0003] However, the effectiveness of heaters is affected by altitude, especially in high-altitude areas. Air density decreases with altitude, and at high altitudes, heaters may drip oil, smoke, or fail to ignite. These malfunctions can prevent the vehicle from starting and the cab from heating up. Cities in Tibet are far apart, and repair shops are scarce; if a problem occurs, the vehicle is unlikely to start, and roadside assistance requires significant time and expense.
[0004] The volatile liquid heater is installed in the vehicle chassis. To meet waterproofing requirements, the controller and other components are all waterproof connectors, completely isolating it from the outside environment. The altitude sensor, being internal, cannot detect atmospheric pressure. The volatile air heater is installed inside the vehicle compartment. Although the controller is open-type, the airflow created by the fan generates negative pressure, preventing the altitude sensor from accurately measuring altitude and thus hindering precise adjustment of the heater's oil level.
[0005] Therefore, it is necessary to design an oil quantity controller that can work normally across the entire altitude range. The controller does not need to participate in the adjustment at plains or low altitudes, but automatically adjusts the oil quantity at high altitudes to reduce the oil quantity so that the heater can work normally. This is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0006] In view of this, the present invention provides a high-altitude adaptive device for a volatile fuel oil heater.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A high-altitude adaptive device for a volatile fuel oil heater includes a controller motherboard, a housing, a plug-in, and a wiring harness; wherein the wiring harness connects the plug-in and the controller body, which are located inside the housing.
[0009] Optionally, the controller motherboard includes an electrically connected altitude sensor, microcontroller, power supply chip, load resistor, drive MOSFET, and TVS transient suppression diode;
[0010] The altitude sensor measures altitude in real time, with a measurement range of 15KP-115KP.
[0011] The microcontroller used is an STM32 microcontroller;
[0012] The power chip converts the input high voltage into the rated low voltage used by the microcontroller;
[0013] The load resistor is packaged in a 2512, 100Ω, 3W power rating.
[0014] The driving MOSFET model is SE01P13K, with an operating voltage of 100V and a current of 7A.
[0015] The TVS transient voltage suppressor diode is model 5KP36A, with an instantaneous power of 5KW.
[0016] Optionally, the shell is composed of an upper shell, a middle shell, and a lower shell assembled together.
[0017] Optionally, the upper housing of the casing has a wire harness lead-out hole.
[0018] Optionally, the plug-in includes a power input plug-in, a signal input plug-in, and an oil pump drive plug-in, all of which are AMP waterproof connectors.
[0019] As can be seen from the above technical solution, compared with the prior art, this utility model provides a high-altitude adaptive device for a volatile fuel oil heater, which has the following beneficial effects:
[0020] (1) This utility model can be automatically adjusted and its working range covers the entire altitude area;
[0021] (2) This utility model is easy to install and has a simple structure; it only requires connecting the power supply, connecting the input end of the volatile fuel heater high-altitude adaptive device to the plug of the heater oil pump control line, and connecting the output end to the oil pump.
[0022] (3) This utility model can be added later. For evaporation heaters that do not have this function on the market, this device can be added. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0024] Figure 1 A schematic diagram of a high-altitude adaptive device for a volatile fuel oil heater provided by this utility model;
[0025] Figure 2 The physical wiring diagram provided for this utility model;
[0026] Among them, A-Power input plug-in, B-Input signal plug-in, C-Oil pump drive plug-in, and D-Housing. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Reference Figure 1 As shown, this utility model discloses a high-altitude adaptive device for a volatile fuel oil heater, including a controller motherboard, a housing D, a plug-in, and a wiring harness; wherein, the wiring harness connecting the plug-in and the controller body is located inside the housing D.
[0029] Specifically, the input end of the volatile fuel oil heater high-altitude adaptive device is connected to the plug of the heater oil pump control line, and the output end is connected to the oil pump.
[0030] Furthermore, the controller motherboard includes an altitude sensor, a microcontroller, a power supply chip, a load resistor, a drive MOSFET, and a TVS transient suppression diode that are electrically connected.
[0031] The altitude sensor measures altitude in real time, with a measurement range of 15KP-115KP.
[0032] The microcontroller used is an STM32 microcontroller;
[0033] The power chip converts the input high voltage into the rated low voltage used by the microcontroller;
[0034] The load resistor is packaged in a 2512, 100Ω, 3W power rating.
[0035] The driving MOSFET model is SE01P13K, with an operating voltage of 100V and a current of 7A.
[0036] The TVS transient voltage suppressor diode is model 5KP36A, with an instantaneous power of 5KW.
[0037] Specifically, Figure 1 It includes a TVS1 transient suppression diode, a U2 power chip, a U1 power chip, a U3 microcontroller, a U5 P-channel MOSFET (i.e., the driving MOSFET uses a P-channel MOSFET), an R15 power resistor, and a U18 altitude sensor.
[0038] An altitude sensor measures the current altitude in real time and converts it into a voltage signal for output. The measurement range is 15KP-115KP. A 32-bit microcontroller from STMicroelectronics is used to collect altitude and oil pump frequency data. After calculation, the data drives the oil pump via a MOS transistor. A load resistor (2512, 100Ω, 3W) collects the oil pump frequency output from the heater. This resistor effectively captures the pumping signal from the heater control output. The driving MOS transistor is model SE01P13K, with a maximum operating voltage of 100V and a current of 7A. A 5KP36A TVS transient voltage suppressor diode with an instantaneous power of up to 5KW effectively absorbs surge voltages, ensuring the entire system operates stably within a reasonable voltage range and guaranteeing normal system operation.
[0039] Furthermore, shell D is composed of an upper shell, a middle shell, and a lower shell assembled together.
[0040] Furthermore, the upper shell of housing D has a wire harness lead-out hole.
[0041] Furthermore, such as Figure 2 As shown, the plug-in includes power input plug-in A, signal input plug-in B, and oil pump drive plug-in C. All three plug-in components are AMP waterproof connectors.
[0042] Specifically, the housing model of power input plug A is AMP 282104-1, the adapter terminal is AMP282109-1, the waterproof plug is AMP 281934-2, A1 is +1.5V positive, and A2 is -1.5V negative;
[0043] The housing model of signal input plug B is AMP 282104-1, the adapter terminal is AMP 282109-1, the adapter waterproof plug is AMP 281934-2, B1 is a 0.75V input port, and B2 is a 0.75V input port.
[0044] The housing model of the oil pump drive plug C is AMP 282080-1, the adapter terminal is AMP 282110-1, the adapter waterproof plug is AMP 281934-2, C1 is the 0.75 oil pump port, and C2 is the 0.75 oil pump port.
[0045] In one specific embodiment, the working principle of this utility model is as follows:
[0046] An altitude sensor measures the altitude in real time, and the microcontroller converts the data using a 12-bit ADC with a data range of 0-4095. The higher the altitude, the lower the atmospheric pressure, and the smaller the data value. Simultaneously, the microcontroller measures the input pump frequency. Upon detecting an input pump frequency, the microcontroller calculates the operating cycle. After calculating the altitude, the microcontroller generates altitude information and adjusts the pump's operating cycle accordingly, reducing the pumped oil volume. The calculation process is as follows:
[0047] The microcontroller detects the input time of the oil pump signal and starts timing from that moment until the input disappears; this time is T1. Timing restarts from the point the oil pump signal disappears until it reappears; this time is T2. The heater oil pump cycle T3 is calculated as (T1 + T2). The microcontroller collects the altitude H and calculates a coefficient P (P value less than or equal to 1) based on H. The calculation module outputs the pumping cycle T4 = T3 / P. Then, based on the actual cycle T4, a pumping command is output.
[0048] The higher the altitude, the thinner the air, and the longer the working cycle, in order to ensure that the fuel burns completely.
[0049] The above description of the disclosed embodiments is presented in a progressive manner to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A high-altitude adaptive device for a volatile fuel oil heater, characterized in that, It includes a controller motherboard, a housing, plug-ins, and wiring harnesses; wherein, the wiring harnesses connecting the plug-ins and the controller body are located inside the housing; The controller motherboard includes an altitude sensor, a microcontroller, a power supply chip, a load resistor, a drive MOSFET, and a TVS transient suppression diode, all electrically connected.
2. The high-altitude adaptive device for a volatile fuel oil heater according to claim 1, characterized in that, The altitude sensor measures altitude in real time, with a measurement range of 15KP-115KP. The microcontroller used is an STM32 microcontroller; The power chip converts the input high voltage into the rated low voltage used by the microcontroller; The load resistor is packaged in a 2512, 100Ω, 3W power rating. The driving MOSFET model is SE01P13K, with an operating voltage of 100V and a current of 7A. The TVS transient voltage suppressor diode is model 5KP36A, with an instantaneous power of 5KW.
3. The high-altitude adaptive device for a volatile fuel oil heater according to claim 1, characterized in that, The shell is composed of an upper shell, a middle shell, and a lower shell.
4. The high-altitude adaptive device for a volatile fuel oil heater according to claim 3, characterized in that, The upper shell of the housing has a wire harness lead-out hole.
5. The high-altitude adaptive device for a volatile fuel oil heater according to claim 1, characterized in that, The plug-in components include a power input plug-in, a signal input plug-in, and an oil pump drive plug-in. All three components are AMP waterproof connectors.