An air conditioner box air inlet mechanism suitable for off-road vehicle working conditions

Abstract

This utility model discloses an air intake mechanism for an air conditioning unit suitable for off-road vehicle operation, belonging to the field of automotive air conditioning technology. It mainly includes a ventilation duct, with a fan blade rotation chamber connected to one end of the duct's outlet. A motor is connected to the bottom of the fan blade rotation chamber, and a fan blade is connected to the rotating end of the motor. The fan blade is located within the fan blade rotation chamber, and an upper ventilation pipe is connected to the upper end of the fan blade rotation chamber. The upper ventilation pipe consists of two half-pipes, bolted above the fan blade rotation chamber. An inclined placement groove is formed at the bottom inner side of the upper ventilation pipe, with the inside and outside of the groove connected. A buckle is connected to the upper middle of the outlet of the placement groove, a locking slot is connected to one side of the outlet, and a limiting plate is connected to the other side. The limiting plate has a limiting plate hole, and a movable plate is connected to the opening of the placement groove. This utility model, through the installation of pressure and wind speed sensors, can detect the specific condition of the filter element contamination, promptly reminding users to replace the filter element to avoid delays in use.

Description

Technical Field

[0001] This utility model belongs to the field of automotive air conditioning technology, and more specifically, it relates to an air intake mechanism for an air conditioning unit suitable for off-road vehicle conditions. Background Technology

[0002] Currently, mainstream automatic air conditioning systems primarily regulate temperature and airflow. However, for off-road vehicle owners, whose vehicles frequently operate in unconventional conditions such as mountains, deserts, and mudflats, the air conditioning unit is prone to becoming clogged, developing odors, and accumulating dust. Current mainstream models mainly protect this by adding filters to the air intake of the air conditioning unit. However, over time, foreign objects and dust accumulate on these filters, reducing filtration efficiency, decreasing airflow, and making them highly susceptible to bacterial growth. Some high-end models have added AQS (Air Quality System), but this only detects air quality and lacks effective dust protection or specific reminders for the special operating conditions of off-road vehicles. Generally, the filter is replaced every six months or a year during vehicle maintenance. This patented technology adds wind speed and pressure sensors to automatically detect wind speed and weight, identifying the current state of the filter. When dust accumulates on the filter surface, it promptly reminds passengers to clean and replace it. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an air intake mechanism for an air conditioning unit suitable for off-road vehicle conditions. It can detect the specific situation of filter element contamination by installing pressure sensors and wind speed sensors, and remind the user to replace the filter element in time to avoid delaying use.

[0004] The air intake mechanism of an air conditioning unit suitable for off-road vehicle conditions includes a ventilation duct, a fan blade rotating cavity is fixedly connected to one end of the ventilation duct outlet, a motor is fixedly connected to the bottom of the fan blade rotating cavity, a fan blade is fixedly connected to the rotating end of the motor, the fan blade is located in the fan blade rotating cavity, and an upper ventilation pipe is fixedly connected to the upper end of the fan blade rotating cavity. The upper ventilation duct consists of two half-pipes, which are fixed to the upper part of the fan blade rotation cavity by bolts. An inclined placement groove is opened at the bottom of the inner side of the upper ventilation duct. The placement groove is connected to the inside and outside. A buckle is fixedly connected to the middle of the upper part of the outlet of the placement groove. A bayonet is fixedly connected to one side of the outlet of the placement groove, and a limit plate is fixedly connected to the other side. The limit plate has a limit plate hole. A movable plate is fixedly connected to the opening of the placement groove. A filter element is slidably connected in the placement groove. An inner air inlet grille is installed on one side above the filter element. An inner and outer air switching plate is rotatably connected to the upper ventilation duct above the filter element. A drive motor is fixedly connected to one side of the upper ventilation duct. The rotating end of the drive motor passes through the upper ventilation duct and is fixedly connected to the inner and outer air switching plate.

[0005] Preferably, a wind speed sensor is fixedly connected to the upper ventilation pipe between the filter element and the fan blade, and the wind speed sensor is a miniature wind speed sensor.

[0006] Preferably, a pressure sensor is fixedly connected to one side of the movable plate, and the pressure sensor abuts against the filter element. A locking block is fixedly connected to the upper middle of the movable plate, and the locking block abuts against the buckle. A tongue is fixedly connected to one end of the movable plate, and an elastic locking block is fixedly connected to the other end. The tongue cooperates with the hole of the limiting plate, and the elastic locking block cooperates with the bayonet for fixation. A wire harness hole is opened on the movable plate on one side of the tongue to facilitate the passage of the pressure sensor wire harness.

[0007] Preferably, the upper end of the upper ventilation pipe is provided with an external air inlet, and an external air inlet grille is fixedly connected to the external air inlet.

[0008] Preferably, the placement slot is inclined toward the movable plate.

[0009] Preferably, a warm air water tank is fixedly connected to the other end of the ventilation duct.

[0010] Preferably, the ventilation duct is fixedly connected with multiple fixing brackets.

[0011] Compared with the prior art, the beneficial effects of this utility model are: Compared to air quality detectors commonly found in regular vehicles, this invention is specifically designed for detecting dirt and grime in the external air circulation filter of an air conditioning system. This invention is particularly effective for off-road vehicles, addressing the issue of easily clogged air intakes in these vehicles and preventing adverse effects on air conditioning performance and components. By installing a wind speed sensor and a pressure sensor, the wind speed sensor detects the airflow behind the air conditioning filter. The air conditioning system has seven fan speed settings, each matched to the airflow range detected by the air volume sensor. The pressure sensor, located below the filter, monitors the weight in real time. When the wind speed sensor detects a decrease in airflow below the lower limit of each fan speed range, but the weight is normal, the system will alert the passenger to clean the filter. When the wind speed sensor detects normal airflow, but the pressure sensor detects the filter weight exceeding the normal value, the system will alert the passenger to check for foreign objects at the air intake. When the wind speed sensor detects a decrease in airflow below the lower limit of each fan speed range, and the weight exceeds the normal value, the system will alert the passenger to replace the filter. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Enlarged view of the specific structure of part A in the middle; Figure 3 This is a structural schematic diagram from another perspective of the present invention; Figure 4 This is a cross-sectional view of the internal structure of this utility model; Figure 5 This is a cross-sectional view of the internal structure of this utility model after the filter element and movable plate have been removed; Figure 6 This is a schematic diagram of the overall structure of the present invention after removing the filter element and the movable plate; Figure 7 for Figure 6 Enlarged view of the specific structure of Part B; Figure 8 for Figure 6 Enlarged view of the specific structure in section C; Figure 9 This is a schematic diagram of the specific structure of the movable board.

[0013] In the diagram, 1. Ventilation duct; 101. Fixed bracket; 102. Fan blade rotation chamber; 2. Motor; 201. Fan blade; 3. Upper ventilation duct; 301. External air inlet; 302. External air inlet grille; 303. Internal air inlet grille; 304. Internal / external air switching plate; 305. Drive motor; 306. Placement slot; 307. Buckle; 308. Locking slot; 309. Limiting plate; 3091. Limiting plate hole; 4. Movable plate; 401. Tongue; 402. Wiring harness hole; 403. Pressure sensor; 404. Locking block; 405. Elastic locking block; 5. Filter element; 6. Wind speed sensor; 7. Warm air tank. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0015] like Figures 1 to 9 As shown, an air intake mechanism for an air conditioning unit suitable for off-road vehicle operation includes a ventilation duct 1. A fan blade rotation chamber 102 is fixedly connected to one end of the ventilation duct 1. A motor 2 is fixedly connected to the bottom of the fan blade rotation chamber 102. A fan blade 201 is fixedly connected to the rotating end of the motor 2. The fan blade 201 is located in the fan blade rotation chamber 102. An upper ventilation pipe 3 is fixedly connected to the upper end of the fan blade rotation chamber 102. The fan blade 201 is rotated by the bottom motor 2 to draw external air into the vehicle's cab for heating or cooling.

[0016] The upper ventilation duct 3 consists of two halves of a duct, and its main function is to facilitate the installation of parts inside the upper ventilation duct 3. It is fixed above the fan blade rotating cavity 102 by bolts. An inclined placement groove 306 is opened at the bottom of the inner side of the upper ventilation duct 3. The placement groove 306 is connected to the inside and outside. A buckle 307 is fixedly connected to the upper middle of the outlet of the placement groove 306. A bayonet 308 is fixedly connected to one side of the outlet of the placement groove 306, and a limiting plate 309 is fixedly connected to the other side. A limiting plate hole 3091 is opened in the limiting plate 309. A movable plate 4 is fixedly connected to the opening of the placement groove 306. A filter element 5 is slidably connected inside the placement groove 306. The main function of the filter element 5 is to filter dust and impurities in the outside air and keep the air in the cab clean. An inner air intake grille 303 is installed on one side above the filter element 5. An internal / external air switching plate 304 is rotatably connected to the upper ventilation pipe 3 above the filter element 5. A drive motor 305 is fixedly connected to one side of the upper ventilation pipe 3. The rotating end of the drive motor 305 passes through the upper ventilation pipe 3 and is fixedly connected to the internal / external air switching plate 304. The drive motor 305 drives the internal / external air switching plate 304 to realize the vehicle's internal and external air circulation.

[0017] A miniature wind speed sensor 6 is fixedly connected to the upper ventilation pipe 3 between the filter element 5 and the fan blade 201. The wind speed sensor 6 detects the airflow drawn into the filter element 5 by the fan blade 201 and compares it with the wind speed when the filter element was initially clean. The more severe the contamination on the filter element 5, the lower the wind speed; once a threshold is reached, replacement is indicated. A pressure sensor 403 is fixedly connected to one side of the movable plate 4, abutting against the filter element 5. This design allows the weight of the filter element 5 to be transferred to the pressure sensor 403, facilitating weight detection. By comparing the weight of the filter element 5 with its initial weight when clean, the contamination level of the filter element 5 can be determined. A locking block 404 is fixedly connected to the upper middle part of the movable plate 4. The locking block 404 and the buckle 307 cooperate to abut against each other. A tongue 401 is fixedly connected to one end of the movable plate, and an elastic locking block 405 is fixedly connected to the other end. The tongue 401 cooperates with the limiting plate hole 3091, and the elastic locking block 405 cooperates with the bayonet 308 for fixation. A wire harness hole 402 is opened on the movable plate 4 on one side of the tongue 401 to facilitate the passage of the wire harness of the pressure sensor 403. The wire harness of the pressure sensor 403 is connected to the processor on the vehicle through the wire harness hole 402. The wind speed sensor 6 is also connected to the processor for judgment and decision.

[0018] An external air inlet 301 is provided at the upper end of the upper ventilation duct 3, and an external air inlet grille 302 is fixedly connected to the external air inlet 301 to prevent insects and excessively large impurities from entering. The placement slot 306 is tilted towards the movable plate 4. A heater tank 7 is fixedly connected to the other end of the ventilation duct 1. Multiple fixing brackets 101 are fixedly connected to the ventilation duct 1 for fixing it to the vehicle body.

[0019] The specific detection method is as follows: When the vehicle is stationary (only the wind speed sensor 6 activates to detect the filter when the vehicle starts or the air conditioning is on while parked; the pressure sensor 403 activates when the vehicle is stationary because contact between the filter 5 and the pressure sensor 403 during vehicle movement would affect the detection results and cause inaccurate readings), the wind speed sensor 6 detects the wind speed behind the filter 5. The air conditioning has seven fan speeds, each matched to the airflow range of the airflow sensor 6. The pressure sensor 403 is located below the filter 5 and detects its weight in real time. When the wind speed sensor 6 detects a decrease in airflow at three or more speed settings, below the lower limit of each speed setting's airflow range, but the weight detection is normal, it will remind the passenger to clean the filter 5. When the wind speed sensor 6 detects normal wind speed, but the pressure sensor 403 detects the filter weight exceeding the normal value, it will remind the passenger to check for foreign objects at the air inlet. When the wind speed sensor 6 detects a decrease in airflow at three or more speed settings, and the airflow is below the lower limit of each speed setting range, and the weight detection exceeds the normal value, the passenger is reminded to replace the filter 5.

[0020] The automobile of this invention includes an air intake mechanism for an air conditioning unit suitable for off-road vehicle conditions, as described above.

[0021] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An air intake mechanism for an air conditioning unit suitable for off-road vehicle operation, comprising a ventilation duct (1), characterized in that: A fan blade rotating cavity (102) is fixedly connected to one end of the ventilation duct (1). A motor (2) is fixedly connected to the bottom of the fan blade rotating cavity (102). A fan blade (201) is fixedly connected to the rotating end of the motor (2). The fan blade (201) is located in the fan blade rotating cavity (102). An upper ventilation duct (3) is fixedly connected to the upper end of the fan blade rotating cavity (102). The upper ventilation pipe (3) consists of two half-pipes, which are fixed above the fan blade rotating cavity (102) by bolts. An inclined placement groove (306) is provided at the bottom of the inner side of the upper ventilation pipe (3). The placement groove (306) is connected to the inside and outside. A buckle (307) is fixedly connected to the middle of the upper part of the outlet of the placement groove (306). A bayonet (308) is fixedly connected to one side of the outlet of the placement groove (306), and a limiting plate (309) is fixedly connected to the other side. A limiting plate hole (309) is provided in the limiting plate (309). 1) A movable plate (4) is fixedly connected to the opening of the placement slot (306). A filter element (5) is slidably connected inside the placement slot (306). An inner air inlet grille (303) is installed on one side above the filter element (5). An inner and outer air switching plate (304) is rotatably connected to the upper ventilation pipe (3) above the filter element (5). A drive motor (305) is fixedly connected to one side of the upper ventilation pipe (3). The rotating end of the drive motor (305) passes through the upper ventilation pipe (3) and is fixedly connected to the inner and outer air switching plate (304).

2. The air intake mechanism for an air conditioning unit suitable for off-road vehicle conditions according to claim 1, characterized in that: A wind speed sensor (6) is fixedly connected to the upper ventilation pipe (3) between the filter element (5) and the fan blade (201). The wind speed sensor (6) is a miniature wind speed sensor.

3. The air intake mechanism for an air conditioning unit suitable for off-road vehicle conditions according to claim 1, characterized in that: A pressure sensor (403) is fixedly connected to one side of the movable plate (4). The pressure sensor (403) abuts against the filter element (5). A locking block (404) is fixedly connected to the upper middle of the movable plate (4). The locking block (404) abuts against the buckle (307). A tongue (401) is fixedly connected to one end of the movable plate, and an elastic locking block (405) is fixedly connected to the other end. The tongue (401) abuts against the limiting plate hole (3091), and the elastic locking block (405) abuts against the bayonet (308). A wire harness hole (402) is provided on the movable plate (4) on one side of the tongue (401) to facilitate the passage of the pressure sensor (403) wire harness.

4. The air intake mechanism for an air conditioning unit suitable for off-road vehicle conditions according to claim 1, characterized in that: The upper ventilation pipe (3) has an external air inlet (301) at its upper end, and an external air inlet grille (302) is fixedly connected to the external air inlet (301).

5. The air intake mechanism for an air conditioning unit suitable for off-road vehicle operation as described in claim 1, characterized in that: The placement slot (306) is inclined toward the movable plate (4).

6. The air intake mechanism for an air conditioning unit suitable for off-road vehicle conditions according to claim 1, characterized in that: The other end of the ventilation duct (1) is fixedly connected to a heating water tank (7).

7. The air intake mechanism for an air conditioning unit suitable for off-road vehicle conditions according to claim 1, characterized in that: Multiple fixed brackets (101) are fixedly connected to the ventilation duct (1).

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