An automatically adjustable automobile air conditioner

Abstract

This utility model discloses an automatically adjustable automotive air conditioner, relating to the field of automotive air conditioning. The automatically adjustable automotive air conditioner includes an input module, an actuator, a control module, and a CFD database. The input module includes a DMS module and sensor components. The actuator includes an HVAC adjustment component and an electric grille. The control module is connected to the actuator and controls its operation. The CFD database is connected to the control module and stores pre-stored airflow field simulation data under different cabin environments. This automatically adjustable automotive air conditioner, with the help of the DMS module and temperature and humidity sensors distributed inside and outside the cabin, obtains basic environmental and human body parameters, thereby achieving overall environmental control. It selects the optimal electric grille angle adjustment and HVAC adjustment component performance parameters based on human comfort indicators, determining the optimal parameters for different temperatures, humidity levels, and human body conditions.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning technology, specifically to an automatically adjustable automotive air conditioner. Background Technology

[0002] Traditional automotive air conditioning vent grille adjustment methods have significant shortcomings: First, the adjustment is imprecise, unable to adjust the airflow direction in real time according to changes in the driver's posture or facial position; second, they lack scientific basis, with existing automatic adjustment technologies relying mostly on preset modes or simple sensor feedback, failing to incorporate biometric recognition and fluid dynamics analysis, thus limiting comfort. Existing technologies also have the following drawbacks:

[0003] 1. Adjusting the grille alone cannot achieve precise control of temperature and humidity inside the cockpit.

[0004] 2. Adjusting the grille mainly relies on experience or trial and error.

[0005] 3. Poor human adaptability, making it difficult to select the most suitable grille angle or temperature and humidity.

[0006] 4. Because it needs to accommodate most human bodies and cool or heat the entire cockpit, the energy consumption is relatively large. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an automatically adjustable automotive air conditioner, which solves the problem that simply adjusting the grille cannot achieve precise control of temperature and humidity in the cabin. Adjusting the grille mainly relies on experience or trial and error, making it difficult to select the most suitable grille angle or temperature and humidity.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatically adjustable automotive air conditioner, comprising:

[0009] The input module includes a DMS module and sensor components. The DMS module integrates an infrared camera or a 3D vision sensor to capture the driver's facial image in real time, calculate the three-dimensional spatial coordinates of the center point of the face, and use the sensor components to detect the cockpit environmental parameters.

[0010] The actuator includes an HVAC control assembly and an electric grille. The HVAC control assembly is used for air circulation and temperature regulation inside the cockpit, and the electric grille is disposed in the HVAC control assembly to adjust the blower angle of the HVAC control assembly.

[0011] The control module is connected to the actuator and is used to control the execution of the actuator's work.

[0012] The CFD database is connected to the control module and pre-stores airflow field simulation data under different cockpit environments.

[0013] The control module performs matching analysis between the facial position signal output by the DMS module and the data in the CFD database to generate adjustment commands for the electric grille angle and the performance parameters of the HVAC adjustment components.

[0014] Preferably, the airflow field simulation data includes airflow distribution, perceived wind speed, and temperature gradient under different outlet angles, wind speeds, and temperature conditions.

[0015] Preferably, the sensor assembly includes temperature and humidity sensors distributed inside and outside the cockpit, and transmits temperature and humidity data to the control module.

[0016] Preferably, the HVAC conditioning assembly includes:

[0017] The housing, wherein the control module is mounted on one side of the housing;

[0018] The blower is fixedly installed on the other side of the housing, and the blower draws outside air into the housing.

[0019] Preferably, a cooling core and a heating core are fixedly installed inside the housing. The cooling core provides cooling capacity to reduce the temperature of the airflow inside the housing, and the heating core provides heating capacity to increase the temperature of the airflow inside the housing.

[0020] Preferably, the outer side of the housing is provided with a mixing damper, a defrosting damper, a face blowing damper, and a foot blowing damper. The mixing damper, defrosting damper, face blowing damper, and foot blowing damper can be used to change the flow path of the gas in the HVAC system and realize the switching between different modes.

[0021] Preferably, the electric grille is installed in the mixing damper, defrosting damper, face blowing damper, and foot blowing damper. The electric grille uses a micro stepper motor or servo motor to drive the grille blades to achieve angle adjustment and opening and closing of the damper.

[0022] Preferably, the blower has an air inlet on its outer side, and a filter element is installed in the air inlet.

[0023] This utility model discloses an automatically adjustable car air conditioner, which has the following beneficial effects:

[0024] 1. This automatically adjustable car air conditioner, with the help of a DMS module and temperature and humidity sensors distributed inside and outside the cockpit, obtains basic environmental and human parameters, thereby achieving overall environmental control. It organizes data on different internal and external environmental temperatures and humidity, as well as different human body conditions, from CFD analysis to form a CFD database. Based on human comfort indicators, it selects the optimal electric grille angle adjustment and HVAC adjustment component performance parameters for different temperatures, humidity levels, and human body conditions, ultimately providing decisions for precise control of the cockpit.

[0025] 2. This automatically adjustable automotive air conditioning system can regulate temperature by adjusting the refrigerant flow rate of the cooling core, the coolant flow rate of the heating core, or the PTC heating power. An electric grille is installed in the mixing damper, defrosting damper, face air damper, and foot air damper. The electric grille uses a micro stepper motor or servo motor to drive the grille blades, achieving angle adjustment and damper opening and closing. By changing the speed of the blower motor, the rotation speed of the fan blades is adjusted, thereby controlling the intensity of airflow. With the cooperation of all components, precise control of the cabin environment is achieved. This precise control results in lower energy consumption and higher performance. Attached Figure Description

[0026] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the architecture of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the actuator and control module of this utility model;

[0029] Figure 3 This is a partial structural diagram of the actuator of this utility model.

[0030] In the diagram: 1. Input module; 2. Actuator; 21. Housing; 211. Cold core; 212. Warm core; 213. Mixing damper; 214. Defrosting damper; 215. Face blowing damper; 216. Foot blowing damper; 22. Blower; 23. Air inlet; 24. Filter element; 3. Control module; 4. CFD database. Detailed Implementation

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] This utility model discloses an automatically adjustable car air conditioner.

[0033] According to the appendix Figure 1-3 As shown, it includes:

[0034] Input module 1 includes a DMS module and sensor components. The DMS module integrates an infrared camera or a 3D vision sensor to capture the driver's facial image in real time, calculate the three-dimensional spatial coordinates of the center point of the face, and use the sensor components to detect the cockpit environmental parameters.

[0035] Actuator 2 includes an HVAC regulating assembly and an electric grille. The HVAC regulating assembly is used for air circulation and temperature regulation inside the cockpit, and the electric grille is installed in the HVAC regulating assembly to adjust the blower angle of the HVAC regulating assembly.

[0036] Control module 3 is connected to actuator 2 and is used to control the operation of actuator 2;

[0037] CFD database 4 is connected to control module 3. CFD database 4 pre-stores airflow field simulation data under different cockpit environments.

[0038] The control module 3 performs matching analysis based on the facial position signal output by the DMS module and the data in the CFD database 4 to generate adjustment commands for the electric grille angle adjustment and the performance parameters of the HVAC adjustment components.

[0039] By utilizing the DMS module and temperature and humidity sensors distributed inside and outside the cockpit, basic environmental and human parameters are obtained, thereby enabling control of the overall environment. The data on different internal and external environmental temperatures and humidity, as well as different human body conditions, obtained from CFD analysis are organized to form a CFD database. Based on human comfort indicators, the optimal performance parameters of the electric grille angle adjustment and HVAC adjustment components are determined under different temperatures, humidity levels, and human body conditions, ultimately providing decisions for precise control of the cockpit.

[0040] Furthermore, the airflow field simulation data includes airflow distribution, perceived wind speed, and temperature gradient under different outlet angles, wind speeds, and temperature conditions.

[0041] Furthermore, the sensor assembly includes temperature and humidity sensors distributed inside and outside the cockpit, and transmits temperature and humidity data to the control module 3.

[0042] Specifically disclosed, the HVAC control components include:

[0043] The housing 21 has the control module 3 mounted on one side.

[0044] Blower 22 is fixedly installed on the other side of housing 21, and blower 22 introduces outside air into housing 21.

[0045] Specifically disclosed, a cooling core 211 and a heating core 212 are fixedly installed inside the housing 21. The cooling core 211 can provide cooling capacity to reduce the temperature of the airflow inside the housing 21, and the heating core 212 can provide heating capacity to increase the temperature of the airflow inside the housing 21.

[0046] Specifically disclosed, the outer side of the housing 21 is provided with a mixing damper 213, a defrosting damper 214, a face blowing damper 215, and a foot blowing damper 216. The mixing damper 213, the defrosting damper 214, the face blowing damper 215, and the foot blowing damper 216 can change the flow path of the gas in the HVAC system and realize the switching between different modes.

[0047] Furthermore, electric grilles are installed in the mixing damper 213, defrosting damper 214, face blowing damper 215, and foot blowing damper 216. The electric grilles use micro stepper motors or servo motors to drive the grille blades, thereby achieving angle adjustment and opening and closing of the dampers.

[0048] Furthermore, an air inlet 23 is provided on the outside of the blower 22, and a filter element 24 is installed in the air inlet 23.

[0049] Temperature regulation can be achieved by adjusting the refrigerant flow rate of the cold core 211, the coolant flow rate of the warm core 212, or the PTC heating power. Electric grilles are installed in the mixing damper 213, defrosting damper 214, face-blowing damper 215, and foot-blowing damper 216. The electric grilles use micro stepper motors or servo motors to drive the grille blades, achieving angle adjustment and damper opening and closing. The rotational speed of the fan blades is adjusted by changing the motor speed of the blower 22, thereby controlling the intensity of airflow. With the cooperation of all components, precise control of the cockpit environment is achieved. This precise control results in lower energy consumption and higher performance.

[0050] Workflow

[0051] Step 1: Dynamic facial positioning and temperature / humidity detection

[0052] The DMS module acquires images of the driver's face, uses a convolutional neural network (CNN) model to locate facial contours and key points, and converts the 2D image coordinates into 3D in-vehicle spatial coordinates (X, Y, Z) by combining camera calibration parameters. For head turning or pitching movements, a pose estimation algorithm is used to correct the facial center point position in real time, and the result is output to the control module. Real-time temperature and humidity detection provides the control module with information on the temperature and humidity inside and outside the cockpit, informing its decision-making.

[0053] Step 2: CFD Data Matching and Precise Control

[0054] Based on the current environmental parameters, specifically the in-vehicle temperature, humidity, set wind speed, and facial coordinates, control module 3 retrieves a matching airflow field model from the CFD database 4. Based on the wind speed and temperature uniformity requirements of the target comfort area, the following two steps are performed: 1. The optimal grille angle is determined using an interpolation algorithm, ensuring that the airflow is guided by the grille and covers the target area; simultaneously, HVAC parameters are adjusted to control the temperature, humidity, and airflow velocity output by the HVAC system, ensuring suitable airflow entering the cabin.

[0055] Step 3: Closed-loop control and dynamic correction

[0056] Actuator 2 receives the angle command and drives the grille blades to the target position. The DMS module continuously monitors facial micro-expressions and environmental sensor data, feeding it back to the control module 3. This triggers CFD data rematching or PID control algorithms to fine-tune the grille angle and HVAC performance parameters, achieving adaptive optimization.

[0057] It is important to emphasize that the working principle of the refrigerant core 211 is based on a thermodynamic phase change process. In the air conditioning system, the refrigerant absorbs heat from the vehicle's interior within the refrigerant core 211, turning into a gaseous state. It is then compressed by the compressor into a high-temperature, high-pressure gas and sent into the refrigerant core 211. Within the refrigerant core 211, the gaseous refrigerant releases heat to the outside air, gradually condensing into a liquid state. During the air conditioning cooling process, the air temperature inside the housing 21 decreases, and the saturated vapor pressure decreases, making it easier for water droplets to condense on the surface of the refrigerant core 211, thus reducing the humidity of the air inside the housing 211. Therefore, by adjusting the refrigerant flow rate, the temperature can be adjusted, and consequently, the air humidity can be controlled.

[0058] The working principle of the heater core 212 is based on heat exchange. During the operation of the car engine, the coolant absorbs a large amount of heat in the engine water jacket, causing its temperature to rise. Some of the high-temperature coolant is pumped to the inlet of the heater core 212. Inside the heater core 212, the high-temperature coolant flows through the core's pipes, while the blower 22 blows air from inside the vehicle across the heat dissipation surface of the heater core 212. As the air flows through the heater core 212, it exchanges heat with the high-temperature core, absorbing heat from it and thus raising its own temperature. The heated air is then sent into the vehicle, providing warm air and raising the interior temperature to make passengers feel warm.

[0059] In the pure electric vehicle sector, since there is no car engine, a PTC heating element is used to directly heat the gas inside the housing 21, increasing the gas temperature. Therefore, the temperature rise of the gas inside the housing 21 can be controlled by adjusting the flow rate of the coolant in the engine water jacket or the power of the PTC heating element.

[0060] It should be emphasized that the working principle of the blower 22 is based on the electric motor driving the fan blades to rotate, thereby generating airflow. The rotating fan blades create a pressure difference inside the blower 22, causing air to be drawn in from the air inlet 23 at the front end of the blower 22. After being pushed by the fan blades, the air enters the housing 21 from the rear end and is then discharged through the damper, forming a continuous airflow.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatically adjustable automotive air conditioner, characterized in that, include: The input module (1) includes a DMS module and a sensor component. The DMS module integrates an infrared camera or a 3D vision sensor to capture the driver's facial image in real time, calculate the three-dimensional spatial coordinates of the center point of the face, and use the sensor component to detect the environmental parameters of the cockpit. The actuator (2) includes an HVAC regulating assembly and an electric grille. The HVAC regulating assembly is used for air circulation and temperature regulation inside the cockpit, and the electric grille is disposed in the HVAC regulating assembly to adjust the blower angle of the HVAC regulating assembly. The control module (3) is connected to the actuator (2) and is used to control the operation of the actuator (2); The CFD database (4) is connected to the control module (3). The CFD database (4) stores airflow field simulation data under different cockpit environments. The control module (3) performs matching analysis based on the facial position signal output by the DMS module and the data in the CFD database (4) to generate instructions for adjusting the electric grille angle and the performance parameters of the HVAC adjustment components.

2. The automatically adjustable automotive air conditioner according to claim 1, characterized in that, The airflow field simulation data includes airflow distribution, perceived wind speed, and temperature gradient under different outlet angles, wind speeds, and temperature conditions.

3. The automatically adjustable automotive air conditioner according to claim 1, characterized in that, The sensor assembly includes temperature and humidity sensors distributed inside and outside the cockpit, and transmits temperature and humidity data to the control module (3).

4. The automatically adjustable automotive air conditioner according to claim 1, characterized in that, The HVAC conditioning assembly includes: The housing (21) has the control module (3) mounted on one side of it; A blower (22) is fixedly installed on the other side of the housing (21), and the blower (22) draws outside air into the housing (21).

5. An automatically adjustable automotive air conditioner according to claim 4, characterized in that, The housing (21) is fixedly installed with a cold core (211) and a warm core (212). The cold core (211) can provide cooling capacity to reduce the temperature of the airflow inside the housing (21), and the warm core (212) can provide heating capacity to increase the temperature of the airflow inside the housing (21).

6. An automatically adjustable automotive air conditioner according to claim 4, characterized in that, The outer side of the housing (21) is provided with a mixing damper (213), a defrosting damper (214), a face blowing damper (215), and a foot blowing damper (216). The mixing damper (213), defrosting damper (214), face blowing damper (215), and foot blowing damper (216) can change the flow path of the gas in the HVAC system and realize the switching between different modes.

7. An automatically adjustable automotive air conditioner according to claim 6, characterized in that, The electric grille is installed in the mixing damper (213), defrosting damper (214), face blowing damper (215) and foot blowing damper (216). The electric grille uses a micro stepper motor or servo motor to drive the grille blades to realize angle adjustment and opening and closing of the damper.

8. An automatically adjustable automotive air conditioner according to claim 4, characterized in that, The blower (22) has an air inlet (23) on its outer side, and a filter element (24) is installed in the air inlet (23).

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