A thin adjustable air door device for air inlet
By designing a thin, adjustable damper device, and using components such as bolts, blind-hole nuts made of phenolic resin, and pins to adjust the airflow, the problem of insufficient thickness of traditional louvers is solved, enabling airflow control in confined spaces, avoiding equipment failure, and providing a simple operating method.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI XUEOU MOBILE AIR-CONDITIONING CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-10
AI Technical Summary
The thickness of traditional adjustable louver structures cannot be used in the narrow distance between the intercooler inlet and the sealing plate, resulting in insufficient condensing air volume, triggering the high-pressure protection of the air conditioning compressor and causing equipment failure.
Design a thin adjustable damper device including a housing, bolts, phenolic resin blind hole nuts, locking plate, pin, and movable base. The air volume is adjusted by adjusting the position of the thin plate to meet the application requirements of small-thickness spaces.
It enables effective airflow adjustment within a 30mm thickness space, avoids equipment failure, and provides a simple closed-loop control solution for airflow control with manual operation.
Smart Images

Figure CN224479819U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of ventilation technology, specifically relating to a thin adjustable damper device for air inlet. Background Technology
[0002] Currently, all cooling and ventilation in ground-based air-conditioned vehicles are provided by several condenser fans installed on the top of the equipment. In extreme high-temperature environments, the condenser's heat dissipation load increases dramatically. Insufficient condenser airflow often triggers the high-pressure protection of the air conditioning compressor, leading to equipment malfunction alarms. To avoid this, it is necessary to limit the airflow into the intercooler of the high-pressure fan, which plays an auxiliary role in cooling, to increase the condenser's cooling airflow and thus ensure stable compressor output. The traditional adjustable louver structure has a minimum thickness of 70mm, making it unsuitable for applications where the distance between the intercooler inlet and the sealing plate is approximately 35mm. Utility Model Content
[0003] This utility model aims to at least partially solve one of the technical problems in the related art.
[0004] Therefore, the technical solution adopted by this utility model is: a thin adjustable damper device for air inlet, including a housing, bolts, blind hole nuts made of phenolic resin, a locking plate, a pin, and a movable base, a front thin plate, a middle thin plate, and a rear thin plate disposed within the housing. The front, middle, and rear thin plates are each provided with a corresponding array of square holes. The front, middle, and rear thin plates are all disposed on the movable base. The middle and rear thin plates are slidably mounted on the housing. The locking plate is provided with a sliding groove and is mounted on the housing. The head of the bolt... The two sides of the part are respectively attached to the locking plate and the movable base. The bolt thread passes through the slide groove and is threaded to the plum blossom bakelite blind hole nut. The front thin plate is provided with a horizontal guide groove, the middle thin plate is provided with a middle inclined guide groove, and the rear thin plate is provided with a rear inclined guide groove. The angle between the rear inclined guide groove and the horizontal direction is greater than the angle between the middle inclined guide groove and the horizontal direction. The two ends of the pin are respectively connected to the two side plates of the movable base. The middle part of the pin passes through the horizontal guide groove, the middle inclined guide groove and the rear inclined guide groove.
[0005] The movable base includes two spaced-apart side plates, and three spaced-apart limiting blocks are arranged between the two side plates. Two limiting plates are arranged at the lower part of the front thin plate. The two limiting plates are respectively inserted into the limiting space formed by the three limiting blocks, and the two limiting plates abut against the limiting blocks at the two ends.
[0006] The front thin plate is fixedly installed on the movable base, and bolts are used to fix it to the movable base. The locking plate is fixedly connected to the outer shell.
[0007] Compared with the prior art, the present invention has the following advantages: The present invention has a compact structure, meets the application requirements of small thickness space, and the structural thickness can reach 30mm. It is simple and convenient to operate manually, and at the same time provides the necessary conditions for application scenarios that require closed-loop dynamic control of air intake. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of this utility model when it is fully closed;
[0009] Figure 2 This is a schematic diagram of the front thin plate structure;
[0010] Figure 3 This is a schematic diagram of the structure of the thinner plate in the middle;
[0011] Figure 4 This is a schematic diagram of the rear thin plate structure;
[0012] Figure 5 This is a structural diagram of the movable base;
[0013] Figure 6 This is a schematic diagram of the outer shell structure;
[0014] Figure 7 This is a schematic diagram of the structure of this utility model when it is fully opened;
[0015] Figure 8 This is a structural diagram of the present invention when it is opened to the middle position. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application.
[0017] Conversely, this application covers any alternatives, modifications, equivalent methods, and schemes made within the spirit and scope of this application as defined by the claims. Furthermore, to provide the public with a better understanding of this application, certain specific details are described in detail below. However, this application can be fully understood by those skilled in the art even without these detailed descriptions.
[0018] See Figures 1 to 8A thin adjustable air inlet damper device includes a housing 5, bolts 6, blind hole nuts 7, locking plates 8, pins 10, and a movable base 1, a front thin plate 2, a middle thin plate 3, and a rear thin plate 4 disposed within the housing 5. The front thin plate 2, middle thin plate 3, and rear thin plate 4 are each provided with a corresponding array of square holes. The front thin plate 2, middle thin plate 3, and rear thin plate 4 are all mounted on the movable base 1. The middle thin plate 3 and rear thin plate 4 are slidably mounted on the housing 5. The locking plate 8 is provided with a sliding groove 9 and is mounted on the housing 5. The two sides of the head of the bolt 6 are respectively attached to the locking plate 8 and... On the movable base 1, the bolt 6 is threaded through the sliding groove 9 and connected to the blind hole nut 7 of the plum blossom bakelite. The front thin plate 2 is provided with a horizontal guide groove 201, the middle thin plate 3 is provided with a middle inclined guide groove 301, and the rear thin plate 4 is provided with a rear inclined guide groove 401. The angle between the rear inclined guide groove 401 and the horizontal direction is greater than the angle between the middle inclined guide groove 301 and the horizontal direction. The two ends of the pin 10 are respectively connected to the two side plates of the movable base 1, and the middle part of the pin 10 is passed through the horizontal guide groove 201, the middle inclined guide groove 301 and the rear inclined guide groove 401.
[0019] The movable base 1 includes two spaced-apart side plates 101, and three spaced-apart limiting blocks 102 are arranged between the two side plates 101. The lower part of the front thin plate 2 is provided with two limiting plates 202. The two limiting plates 202 are respectively inserted into the limiting space formed by the three limiting blocks 102, and the two limiting plates 202 respectively abut against the limiting blocks 102 at the two ends.
[0020] The front thin plate 2 is fixedly installed on the movable base 1, the bolt 6 is fixedly connected to the movable base 1, and the locking plate 8 is fixedly connected to the outer shell 5.
[0021] When the blind hole nut of the ebony wood is tightened so that it is firmly attached to the locking plate, the bolt and the movable base will be fixed in place.
[0022] When the airflow needs to be adjusted, loosen the blind hole nut made of plywood and move the bolt along the slide groove. With the cooperation of the pin shaft and the middle and rear inclined guide grooves, the positions of the middle and rear thin plates are raised or lowered. This increases or decreases the area of the square hole array on the front, middle, and rear thin plates, thereby adjusting the airflow.
Claims
1. A thin adjustable damper device for an air inlet, characterized in that: The system includes a housing (5), bolts (6), blind hole nuts (7), locking plates (8), pins (10), and a movable base (1), a front thin plate (2), a middle thin plate (3), and a rear thin plate (4) disposed within the housing (5). The front thin plate (2), the middle thin plate (3), and the rear thin plate (4) are all provided with corresponding square hole arrays. The front thin plate (2), the middle thin plate (3), and the rear thin plate (4) are all disposed on the movable base (1). The middle thin plate (3) and the rear thin plate (4) are all slidably mounted on the housing (5). The locking plate (8) is provided with a sliding groove (9). The locking plate (8) is mounted on the housing (5). The two sides of the head of the bolt (6) are respectively attached to the locking plate (8). On the movable base (1), the bolt (6) is threaded through the groove (9) and connected to the blind hole nut (7) of the plum blossom bakelite. The front thin plate (2) is provided with a horizontal guide groove (201), the middle thin plate (3) is provided with a middle inclined guide groove (301), and the rear thin plate (4) is provided with a rear inclined guide groove (401). The angle between the rear inclined guide groove (401) and the horizontal direction is greater than the angle between the middle inclined guide groove (301) and the horizontal direction. The two ends of the pin (10) are respectively connected to the two side plates of the movable base (1). The middle part of the pin (10) is threaded through the horizontal guide groove (201), the middle inclined guide groove (301) and the rear inclined guide groove (401).
2. The thin adjustable damper device for air inlet as described in claim 1, characterized in that: The movable base (1) includes two spaced-apart side plates (101), and three spaced-apart limiting blocks (102) are arranged between the two side plates (101). The lower part of the front thin plate (2) is provided with two limiting plates (202), which are respectively inserted into the limiting space formed by the three limiting blocks (102). The two limiting plates (202) abut against the limiting blocks (102) at the two ends respectively.
3. The thin adjustable damper device for air inlet as described in claim 1, characterized in that: The front thin plate (2) is fixedly installed on the movable base (1), the bolt (6) is fixedly connected to the movable base (1), and the locking plate (8) is fixedly connected to the outer shell (5).