Double-air-door structure with internal and external circulation constant-proportion air inlet function

Abstract

The double-air-door structure comprises an inner and outer circulation shell, the inner and outer circulation shell comprises an inner and outer circulation left shell body and an inner and outer circulation right shell body, and the inner and outer circulation left shell body and the inner and outer circulation right shell body are fixed through bolts. The upper surface of the inner and outer circulation shell is composed of two protruding arc-shaped faces, an outer circulation air inlet is formed in one side of the inner and outer circulation shell, and an inner and outer circulation air door and an inner air compensation air door which are rotationally connected are arranged in the inner and outer circulation shell. An inner circulation air inlet and an inner air compensation air opening corresponding to the inner and outer circulation air door and the inner air compensation air door are formed in the upper surface of the inner and outer circulation shell, energy utilization can be improved through a fixed-proportion inner air compensation mode, temperature adjustment is rapidly achieved, and the mode movement mechanism is simple in structure, high in transmission efficiency, small in occupied space, light in weight and high in practicability. The filter element folds are transversely placed, so that high-speed airflow can be effectively prevented from blowing from the folds after entering the air opening.

Description

Technical Field

[0001] This utility model relates to the technical field of air intake structure of air conditioning unit, specifically a double-door structure for fixed-ratio internal and external air intake. Background Technology

[0002] Car air conditioning systems generally have two modes: internal circulation and external circulation. In external circulation mode, the air conditioner can accept fresh outside air to improve the in-car environment. In internal circulation mode, the air inside the car is recirculated into the car, which can save energy. As the automotive industry places increasing demands on comfort, internal air compensation mode can ensure both fresh air and energy saving. However, most car air conditioning systems cannot compensate for internal air according to the specified ratio. In some cases, when the car is traveling at high speed, there may be instances where the external circulation air intake blows air in. This allows unfiltered air to enter the car, affecting health and also impacting the car's performance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a dual-door structure with fixed-ratio internal and external circulation air intake, which can realize fixed-ratio internal air compensation. The fixed-ratio internal air compensation mode can improve energy utilization, quickly achieve temperature regulation, and the mode motion mechanism has a simple structure, high transmission efficiency, small space occupation, and lightweight. The horizontal placement of the filter element pleats can effectively prevent high-speed airflow from entering the air outlet and then leaking out through the pleats, thus improving comfort and performance. It can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dual-door structure with proportional internal and external circulation air intake, comprising internal and external circulation housings, the internal and external circulation housings comprising a left internal and external circulation housing and a right internal and external circulation housing, which are fixed together by bolts; the upper surface of the internal and external circulation housings is composed of two raised arc-shaped surfaces; an external circulation air inlet is provided on one side of the internal and external circulation housings; the internal and external circulation housings are provided with rotatably connected internal and external circulation dampers and internal air compensation dampers; and the upper surface of the internal and external circulation housings is provided with internal circulation air inlets and internal air compensation air inlets corresponding to the internal and external circulation dampers and internal air compensation dampers; an internal circulation sliding plate bracket is provided at one end of the left internal and external circulation housing; a mode sliding plate is rotatably connected to the internal circulation sliding plate bracket; and the mode sliding plate is connected to the internal and external circulation dampers and internal air compensation dampers by internal and external circulation rocker arms and internal air compensation rocker arms, respectively.

[0005] Furthermore, the internal and external circulation rocker arm and the internal air compensation rocker arm have the same structure, and both the internal and external circulation rocker arm and the internal air compensation rocker arm are Z-shaped structures. One end of the internal and external circulation rocker arm and the internal air compensation rocker arm are respectively fixedly connected to one end of the internal and external circulation damper and the internal air compensation damper.

[0006] Furthermore, one side of the mode slide is provided with an internal and external circulation damper track groove and an internal air compensation damper track groove, and the other ends of the internal and external circulation rocker arm and the internal air compensation rocker arm slide inside the internal and external circulation damper track groove and the internal air compensation damper track groove, respectively.

[0007] Furthermore, a filter element is fixed at the lower end of the inner and outer circulation housing, and the filter element is located below the inner and outer circulation damper and the inner air compensation damper. The filter element has a corrugated structure, and the pleat direction of the filter element is perpendicular to the air inlet direction.

[0008] Furthermore, both sides of the internal and external circulation damper and the internal air compensation damper are provided with rubber strips. The rubber strips have a V-shaped cross-section and a serrated structure. The interior of the internal and external circulation housing is provided with a sealing strip, which can fit and seal with one side of the internal air compensation damper.

[0009] Compared with the prior art, the beneficial effects of this utility model are: the dual-door structure with fixed-proportion internal and external circulation air intake can achieve fixed-proportion internal air compensation. The fixed-proportion internal air compensation mode can improve energy utilization, quickly achieve temperature regulation, and the mode motion mechanism has a simple structure, high transmission efficiency, small space occupation, and lightweight. The horizontal placement of the filter element pleats can effectively prevent high-speed airflow from entering the air vent and then leaking out through the pleats, thus improving comfort and performance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0012] Figure 3 This is a schematic diagram of the internal and external circulation slide structure of this utility model;

[0013] Figure 4 This is a schematic diagram of the external circulation mode structure of this utility model;

[0014] Figure 5 This is a schematic diagram of the internal circulation mode structure of this utility model;

[0015] Figure 6 This is a schematic diagram of the internal air compensation mode structure of this utility model;

[0016] Figure 7 This is a schematic diagram of the internal and external circulation and internal air compensation damper structure of this utility model;

[0017] Figure 8 This is a schematic diagram of the internal and external circulation slide and rocker arm structure of this utility model.

[0018] In the diagram: 1. Left housing for internal and external circulation, 101. External circulation air inlet, 2. Right housing for internal and external circulation, 3. Internal and external circulation damper, 301. Internal circulation air inlet, 4. Internal air compensation damper, 401. Internal air compensation air outlet, 5. Filter element, 6. Internal air compensation rocker arm, 7. Mode slide, 701. Internal air compensation damper track groove, 702. Internal and external circulation damper track groove, 8. Internal circulation slide bracket, 9. Internal and external circulation rocker arm, 10. Sealing strip, 11. Adhesive strip. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-8This utility model provides a technical solution: a dual-damper structure with proportional internal and external circulation air intake, comprising internal and external circulation housings, including a left internal and external circulation housing 1 and a right internal and external circulation housing 2, which are fixed together by bolts. The upper surface of the internal and external circulation housings consists of two raised arc-shaped surfaces. An external circulation air inlet 101 is provided on one side of the internal and external circulation housings. Rotatably connected internal and external circulation dampers 3 and internal air compensation dampers 4 are provided inside the internal and external circulation housings. The surfaces of the internal and external circulation dampers 3 and internal air compensation dampers 4 are arranged with cross-shaped ribs and corrugated structures to increase the service life of the dampers. Simultaneously, the corrugated structure can suppress airflow turbulence and ensure uniform airflow. Furthermore, the internal and external circulation housings... The upper surface is provided with an internal circulation air inlet 301 and an internal air compensation air outlet 401 corresponding to the internal and external circulation dampers 3 and 4, respectively. An internal circulation slide plate bracket 8 is provided at one end of the left housing 1 of the internal and external circulation system. A mode slide plate 7 is rotatably connected to the internal circulation slide plate bracket 8. The mode slide plate 7 is driven by the internal and external circulation dampers 3 and 4 via internal and external circulation rocker arms 9 and 6, respectively. The internal and external circulation rocker arms 9 and 6 have the same structure and are both Z-shaped. One end of the internal and external circulation rocker arms 9 and 6 is fixedly connected to one end of the internal and external circulation dampers 3 and 4, respectively. An internal and external circulation damper track groove 70 is provided on one side of the mode slide plate 7. 2. The inner and outer circulation damper track groove 701, and the other ends of the inner and outer circulation rocker arm 9 and the inner air compensation rocker arm 6 slide inside the inner and outer circulation damper track groove 702 and the inner air compensation damper track groove 701, respectively. A filter element 5 is fixed at the lower end of the inner and outer circulation housing, and the filter element 5 is located below the inner and outer circulation damper 3 and the inner air compensation damper 4. The filter element 5 has a corrugated structure, and the pleat direction of the filter element 5 is perpendicular to the air inlet direction. Rubber strips 11 are provided on both sides of the inner and outer circulation damper 3 and the inner air compensation damper 4. The rubber strips 11 have a V-shaped cross-section and a serrated structure. A sealing strip 10 is provided inside the inner and outer circulation housing. The sealing strip 10 can fit and seal with one side of the inner air compensation damper 4. The serrated rubber strip 11 can improve the air quality. The whistling sound generated when the damper is about to close, in both internal circulation mode and internal air compensation mode, is caused by the rubber strip 11 on the internal air compensation damper 4 overlapping the sealing strip 10. In internal air compensation mode, the internal circulation air enters the filter element 5 independently from the external circulation air, without interfering with each other. The filter element 5 has horizontally arranged pleats, and the sealing strip 10 is tightly attached to the filter element 5, which can effectively prevent external circulation air leakage. This dual damper structure with a fixed ratio of internal and external circulation air intake can achieve a fixed ratio of internal air compensation. The fixed ratio of internal air compensation mode can improve energy utilization, quickly achieve temperature regulation, and the mode motion mechanism has a simple structure, high transmission efficiency, small space occupation, and lightweight design. The horizontal placement of the filter element pleats can effectively prevent high-speed airflow from leaking through the pleats after entering the air outlet, thus improving comfort and performance.

[0021] In use: Rotating the mode slide 7 drives the internal and external circulation damper track groove 702 and the internal air compensation damper track groove 701 to rotate. When the mode slide 7 rotates, the internal and external circulation rocker arm 9 and the internal air compensation rocker arm 6 slide within the internal and external circulation damper track groove 702 and the internal air compensation damper track groove 701, respectively. Since the tracks of the internal and external circulation damper track groove 702 and the internal air compensation damper track groove 701 are not circular structures surrounding the center of the mode slide 7, one end of the internal and external circulation rocker arm 9 and the internal air compensation rocker arm 6 can rotate up and down. The internal and external circulation rocker arm 9 and the internal air compensation rocker arm 6 can then drive the internal air compensation damper to rotate up and down. The external circulation damper 3 and the internal air compensation damper 4 rotate to control their rotation angles, thereby achieving three modes: external circulation mode, internal circulation mode, and internal air compensation mode with a 7:3 ratio of external to internal circulation. By reducing the material of the outer contour of the mode slide 7 to the contour shape of the track groove, the weight and volume of the moving mechanism can be reduced, making it lightweight while ensuring structural strength. The moving mechanism consists of only the internal circulation slide bracket 8, the internal circulation slide 7, the internal and external circulation rocker arms 9, and the internal air compensation rocker arm 6, which features a simple and compact structure, high transmission efficiency, small space occupation, and longer service life.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A double damper structure of internal and external circulation with proportional air intake, comprising an internal and external circulation shell, characterized in that: The inner and outer circulation shell comprises an inner and outer circulation left shell (1) and an inner and outer circulation right shell (2), the inner and outer circulation left shell (1) and the inner and outer circulation right shell (2) are fixed by bolts, the upper surface of the inner and outer circulation shell is composed of two convex arc surfaces, one side of the inner and outer circulation shell is provided with an outer circulation air inlet (101), the inner and outer circulation shell is internally provided with a rotationally connected inner and outer circulation air door (3) and an inner air compensation air door (4), and the upper surface of the inner and outer circulation shell is provided with an inner circulation air inlet (301) and an inner air compensation air inlet (401) corresponding to the inner and outer circulation air door (3) and the inner air compensation air door (4), one end of the inner and outer circulation left shell (1) is provided with an inner circulation sliding disc support (8), the inner circulation sliding disc support (8) is provided with a rotatable mode sliding disc (7) on the upper surface, and the mode sliding disc (7) is respectively driven by an inner and outer circulation rocker arm (9) and an inner air compensation rocker arm (6) between the inner and outer circulation air door (3) and the inner air compensation air door (4).

2. The dual damper structure of claim 1, wherein: The inner and outer circulation rocker arm (9) and the inner air compensation rocker arm (6) are the same in structure, and the inner and outer circulation rocker arm (9) and the inner air compensation rocker arm (6) are both Z-shaped structures, and one end of the inner and outer circulation rocker arm (9) and the inner air compensation rocker arm (6) is fixedly connected with one end of the inner and outer circulation air door (3) and the inner air compensation air door (4) respectively.

3. The dual damper structure of claim 2, wherein: One side of the mode sliding disc (7) is provided with an inner and outer circulation air door trajectory groove (702) and an inner air compensation air door trajectory groove (701), and the other end of the inner and outer circulation rocker arm (9) and the inner air compensation rocker arm (6) slides in the inner and outer circulation air door trajectory groove (702) and the inner air compensation air door trajectory groove (701) respectively.

4. The dual damper structure of claim 1, wherein: The inner and outer circulation shell is internally fixed with a filter core (5) at the lower end, and the filter core (5) is located below the inner and outer circulation air door (3) and the inner air compensation air door (4), the filter core (5) is of a corrugated structure, and the wrinkle direction of the filter core (5) is vertically arranged with the air inlet direction.

5. The dual damper structure of claim 1, wherein: Both sides of the inner and outer circulation air door (3) and the inner air compensation air door (4) are provided with a rubber strip (11), the rubber strip (11) is of a V-shaped structure in cross section, and the rubber strip (11) is of a sawtooth structure, the inner and outer circulation shell is internally provided with a sealing strip (10), and the sealing strip (10) can be sealed with one side of the inner air compensation air door (4).

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