CN117301793A

CN117301793A - Centrally-mounted double-layer flow air conditioner

Info

Publication number: CN117301793A
Application number: CN202311238587.5A
Authority: CN
Inventors: 徐治强; 兰云德; 赵岩松; 陈国传; 蔡亮; 汪先国; 段伟兵
Original assignee: Sandian China Automobile Air Conditioning Co ltd
Current assignee: Sandian China Automobile Air Conditioning Co ltd
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2023-12-29

Abstract

The invention discloses a centrally-mounted double-layer air conditioner, which comprises an air conditioner box shell assembly, wherein the air conditioner box shell assembly is provided with a middle partition plate and outer shells symmetrically arranged on two sides of the middle partition plate, an air flow passage is respectively formed between the two groups of outer shells and the middle partition plate, the two air flow passages are respectively provided with an air inlet end and an air outlet end, the two groups of outer shells are respectively provided with a group of converging shells at positions corresponding to the air inlet ends, each converging shell is provided with an inner circulating air inlet and an outer circulating air inlet, air doors are rotatably arranged in the two groups of converging shells, and the air doors can close the inner circulating air inlet or the outer circulating air inlet in a selective mode. The beneficial effects of the invention are as follows: through the rotation of control air door, two air flow channels can select different circulation modes respectively to be convenient for reach simultaneously for the defrosting of door window and for the purpose of driver and passenger's heating.

Description

Centrally-mounted double-layer flow air conditioner

Technical Field

The invention relates to the technical field of automobile air conditioners, in particular to a centrally-mounted double-layer air conditioner.

Background

The automobile air conditioning system is a device for realizing air refrigeration, heating, ventilation and air purification in a carriage, and can provide a comfortable riding environment for passengers and reduce the fatigue strength of the drivers.

In the prior art, there are various arrangements of air conditioners for automobiles, such as: split, overhead, horizontal, etc. The traditional horizontal air conditioner main unit assembly is usually arranged under an instrument desk in a cab, and because the blower is transversely arranged and the structural units of the arrangement form are complex, the space occupied by a Y-direction main body is large, and the effective utilization of the space in the whole automobile is not facilitated. In addition, conventional automotive air conditioners generally have only one circulation flow path, i.e., the inner circulation and the outer circulation share one flow path. Therefore, when the air conditioner is operated, only one circulation mode can be selected to be cooling or heating in the vehicle. However, the drawbacks of such a design are: in cold winter, the vehicle window is easy to frost, so that the vehicle window needs to be defrosted by opening the external circulation, but the air introduced by the external circulation is cold air, so that the body of a driver feels uncomfortable; if only the inner circulation is opened to provide warm air to the environment inside the vehicle, the defrosting efficiency of the air conditioner is low.

Disclosure of Invention

In view of the above, the invention provides a centrally-mounted double-layer air conditioner, which can increase defogging efficiency and reduce air conditioner energy consumption in a double-layer heating mode, has a small Y-direction main body space, and provides a huge space for a driving cabin in a vehicle.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

the utility model provides a put formula double-layer flow air conditioner, includes air conditioning case casing assembly, its key lies in: the air conditioning box shell assembly is provided with a middle partition plate and outer shells symmetrically arranged on two sides of the middle partition plate, an air flow channel is respectively formed between the two groups of outer shells and the middle partition plate, the two air flow channels are respectively provided with an air inlet end and an air outlet end, the air outlet ends of the two air flow channels are respectively positioned at the top of the outer shells, the air inlet ends are respectively positioned at the front end side parts of the outer shells, the two groups of outer shells are respectively provided with a group of converging shells at positions corresponding to the air inlet ends, the two groups of converging shells are respectively provided with an inner circulation air inlet and an outer circulation air inlet, the inner circulation air inlets of the two groups of converging shells respectively face the two sides of the width direction of the air conditioning box shell assembly, and the outer circulation air inlets of the two groups of converging shells face the front end of the air conditioning box shell assembly;

and air doors are rotatably assembled in the two groups of converging shells, and can close the inner circulation air inlet or the outer circulation air inlet in a selective mode.

By adopting the structure, through controlling the rotation of the air door, the two air flow channels can respectively select different circulation modes so as to simultaneously achieve the purposes of defrosting the vehicle window and heating the driver and the passengers. In addition, two air flow channels are symmetrically arranged on two sides of the middle partition plate, two groups of external circulation air inlets face the front end of the air conditioning box shell assembly, and the air outlet ends of the two air flow channels are located at the top of the outer shell.

As preferable: the top ends of the two groups of air doors are respectively provided with a rotating shaft, the rotating shafts respectively penetrate through corresponding outer shells upwards, the two groups of outer shells are respectively provided with an actuator, and each actuator is used for independently rotating the two groups of air doors. By adopting the structure, various control of the air conditioner gear can be realized.

As preferable: each air door is of a fan-shaped structure and is provided with a fan-shaped vertical surface and fan-shaped end surfaces arranged on two sides of the fan-shaped vertical surface.

As preferable: the two groups of the converging shells are formed by connecting an upper converging shell and a lower converging shell. Adopt above-mentioned structure to the installation of being convenient for can also strengthen simultaneously and converge the stability of casing overall structure.

As preferable: the front end of the air conditioner box shell assembly is provided with a forward extending annular cover body, and the two groups of external circulation air inlets are all positioned in the annular cover body. The structure is adopted so as to facilitate the assembly of the air conditioning box in the vehicle.

As preferable: the front end of the annular cover body is sequentially provided with a filter screen and a sealing part, and the sealing part is of an annular structure with a hollowed-out middle and is used for being abutted with an engine compartment wall plate; the sealing member has elasticity. By adopting the structure, large particle foreign matters in the engine compartment can be prevented from entering the air conditioner box shell assembly from the annular cover body.

As preferable: the sound-proof covers are arranged at the positions of the corresponding internal circulation air inlets of the two groups of converging shells, and the upper sides of the sound-proof covers are all open, so that air flow can be introduced into the corresponding internal circulation air inlets from bottom to top. By adopting the structure, the air inlet direction of the air flow can be changed, the air noise emitted by the air flow entering the internal circulation air inlet is ensured not to face the direction of the main and auxiliary drivers, and the purpose of actively reducing noise is achieved.

As preferable: the sound-proof cover comprises a supporting framework and sound-proof cotton covered on the surface of the supporting framework, and openings are distributed on the supporting frameworks.

As preferable: each supporting framework comprises a wind shielding surface obliquely arranged on the outer side of a corresponding inner circulation air inlet, the lower end of the wind shielding surface is fixedly connected with a corresponding converging shell, gaps are reserved between the upper end of the wind shielding surface and the corresponding inner circulation air inlet, a first bending part and a second bending part are respectively arranged on two sides of the wind shielding surface, and the end parts of the first bending part and the second bending part are respectively and fixedly assembled at two ends of the inner circulation air inlet.

As preferable: the filter screen consists of square grids distributed in an array mode, and the side length of each square grid is smaller than or equal to 6mm. By adopting the structure, large-particle foreign matters can be effectively prevented from entering the annular cover body.

Compared with the prior art, the invention has the beneficial effects that:

1. by adopting the centrally-mounted double-layer air conditioner provided by the invention, through controlling the rotation of the air door, the two air flow channels can respectively select different circulation modes, so that the purposes of defrosting the vehicle window and heating the driver and the passengers can be achieved at the same time.

2. The centrally-mounted double-layer air conditioner provided by the invention can improve the heating efficiency of the air conditioner in a double-layer heating mode, and can also reduce the energy consumption of the air conditioner.

3. The centrally-mounted double-layer air conditioner provided by the invention can reduce the overall volume of the air conditioning box shell assembly, reduce the space occupied by the air conditioning box, optimize the layout of the space in the vehicle, provide huge space for the foot position of a driver and greatly improve the driving comfort of the user.

4. Each actuator can independently control the rotation of the corresponding rotating shaft, can realize various control of the air conditioner gear, and provides more gear selections for drivers.

Drawings

FIG. 1 is a schematic diagram of a structure of a centrally located bi-level flow air conditioner;

fig. 2 is a schematic view showing the direction in which the air flow flows in the air flow passage 21;

FIG. 3 is a left side view of a center double-layer air conditioner;

FIG. 4 is a rear view of a center double-layer air conditioner;

fig. 5 is a schematic view showing the installation position of the damper 4 (the upper confluence housing 31 has been hidden);

fig. 6 is a schematic structural view of the bus bar housing 3;

FIG. 7 is a schematic view of the damper 4;

FIG. 8 is another schematic structural view of the damper 4 (with the damper being concealed, 4 d);

FIG. 9 is a schematic view of the structure of damper cap 4 d;

FIG. 10 is a plan view of a center double-layer air conditioner mounted to an engine bulkhead plate B;

FIG. 11 is an exploded view showing the connection relationship of the annular housing 6, the screen 7, the seal member 8, and the bulkhead plate B;

fig. 12 is a schematic structural view of an engine bulkhead plate B;

fig. 13 is a schematic view of the structure of the filter screen 7;

fig. 14 is a schematic structural view of the annular cover 6;

fig. 15 is a schematic structural view of the centrally-mounted double-layer air conditioner after the sound-proof cover 9 is mounted (only one side is shown);

fig. 16 is another schematic structural view of the centrally-mounted double-layer air conditioner after the sound-proof housing 9 is mounted (only a part of one of the internal circulation air inlets 3a and the sound-proof housing 9 is shown);

fig. 17 is an exploded structural view showing the connection relationship of the confluence housing 3 and the soundproof cover 9;

fig. 18 is a schematic structural view of the soundproof cover 9;

fig. 19 is another structural schematic view of the soundproof cover 9;

fig. 20 is a schematic structural view of the supporting frame 91;

fig. 21 is a schematic view showing the inner structure of the damper 4.

Detailed Description

The invention is further described below with reference to examples and figures.

As shown in fig. 1 and 2, a centrally-mounted double-layer air conditioner comprises an air conditioner case housing assembly a, wherein the air conditioner case housing assembly a is provided with a middle partition board 1 and outer housing bodies 2 symmetrically arranged on two sides of the middle partition board 1, and an air flow channel 21 is respectively formed between the two groups of outer housing bodies 2 and the middle partition board 1. The two air flow channels 21 are respectively provided with an air inlet end 2a and an air outlet end 2b, the air outlet ends 2b of the two air flow channels 21 are respectively positioned at the top of the outer shell 2, and the air inlet ends 2a are respectively positioned at the side parts of the front end of the outer shell 2. The air inlet end 2a is annular and open, so that the blower can be conveniently installed, and the blower is installed in the air flow channel 21 of the automobile air conditioner as a mature technical means, which is not described in detail herein. After entering the air inlet end 2a, the air flows out from the air outlet end 2b in the flowing direction shown in fig. 2 under the action of the blower, so that the air circulates.

As further shown in fig. 3 and 4, two sets of outer casings 2 are each provided with a set of converging casings 3 at positions corresponding to the air inlet ends 2a, and the two sets of converging casings 3 each have an inner circulation air inlet 3a and an outer circulation air inlet 3b, that is, for a single air flow passage 21, the outer circulation air and the inner circulation air share one air inlet end 2a. As can be seen from fig. 1, the inner circulation air inlets 3a of the two groups of converging housings 3 face to both sides of the air-conditioning case housing assembly a in the width direction, and the outer circulation air inlets 3b of the two groups of converging housings 3 face to the front end of the air-conditioning case housing assembly a. As can be seen in conjunction with fig. 5 and 6, a damper 4 is rotatably mounted in both sets of the collecting housing 3, and the damper 4 can selectively close the inner circulation air inlet 3a or the outer circulation air inlet 3b. The air flow path 21 introduces the vehicle exterior air when the damper 4 is rotated to the inner circulation air intake 3a, and the air flow path 21 introduces the vehicle interior air when the damper 4 is rotated to the outer circulation air intake 3b.

Based on the above structural design, the centrally-mounted double-layer air conditioner provided in this embodiment has two air flow channels 21, and by controlling the rotation of the damper 4, the two air flow channels 21 can respectively select different circulation modes. If one of the air flow channels 21 selects an internal circulation mode to provide warm air for the body of a driver, and the other air flow channel 21 selects an external circulation mode to provide cool air for the window, the purposes of defrosting the window and heating the driver can be achieved at the same time.

In addition, the air conditioner of the present embodiment is of a centrally-mounted double-layer flow structure, two air flow channels 21 are symmetrically arranged on two sides of the middle partition board 1, and the outer circulation air inlets 3b and the inner circulation air inlets 3a of the two air flow channels 21 are integrated on the front portion of the air conditioning case housing assembly by the converging housing 3, wherein the two outer circulation air inlets 3b face the front end of the air conditioning case housing assembly, the two inner circulation air inlets 3a are distributed on the side portion of the front end of the housing assembly, and meanwhile, the air outlet ends 2b of the two air flow channels 21 are located on the top of the outer housing 2. Through the integrated two air flow channels 21 that set up of such overall arrangement mode, can reduce the whole volume of air conditioning case casing assembly, reduce the space of the duty cycle of air conditioning case, especially reduced in the car Y to main part space duty cycle, provide huge space for driver foot position, promoted the travelling comfort that the user was driven by a wide margin.

Since the left and right portions of the air conditioning case housing assembly a in the width direction have the same structure, only one of the structures will be described in detail below.

As shown in fig. 5, 6 and 7, both ends of the damper 4 are provided with a rotation shaft 4a, the rotation shaft 4a at the top end thereof passes through the upper portion of the confluence housing 3 and extends upward, and the top of the rotation shaft 4a is provided with an actuator capable of driving the rotation thereof. In this embodiment, the two actuators can independently control the rotation of their corresponding shafts 4 a. By the design, various control of the air conditioner gear can be realized. For example, both air flow passages 21 introduce an external circulation gas or both internal circulation gases, or both air flow passages 21 introduce different gases, respectively, or the like. The air conditioner can not only improve the efficiency of adjusting temperature under the heating mode of double-layer flow, compares traditional vehicle air conditioner's single circulation runner structure, can also reduce the air conditioner energy consumption.

Referring to fig. 7, the air doors 4 are all in a fan-shaped structure, and the structural sizes of the air doors are matched with the sizes of the inner circulation air inlet 3a and the outer circulation air inlet 3b. The damper 4 includes a fan-shaped vertical surface 4b and fan-shaped end surfaces 4c provided on both sides of the fan-shaped vertical surface 4b, and as can be seen from fig. 21, the fan-shaped vertical surface 4b and the fan-shaped end surfaces 4c on both sides thereof enclose a recessed arc-shaped structure inside the damper 4. So design, when guaranteeing structural strength, have better ventilation effect. Referring to fig. 7 again, the fan-shaped vertical surface 4b is wave-shaped, and the wave-shaped fan-shaped vertical surface 4b can increase the overall structural strength of the air door 4, so that the stability of the air door 4 in a static state is improved.

As shown in fig. 7 to 9, the edge of the damper 4 is provided with a connecting edge 4e, and the side wall of the connecting edge 4e is provided with a damper rubber coating 4d, and the inner side and the outer side of the connecting edge 4e are wrapped by the damper rubber coating 4d, so that the sealing effect of the damper 4 is enhanced. In this embodiment, the damper overmold 4d is a two shot molding.

Referring to fig. 6, the bus bar housing 3 is composed of an upper bus bar housing 31 and a lower bus bar housing 32, and the upper bus bar housing 31 and the lower bus bar housing 32 are fixedly connected by screws. In this regard, not only has an advantage of easy installation, but also enhances the stability of the structure of the bus bar housing 3.

As shown in fig. 10 and 11, in practical application, the air conditioning case housing assembly a is fixedly assembled in the automobile through the engine compartment wall board B, and for convenience of assembly, the front end of the air conditioning case housing assembly a is provided with a ring-shaped cover 6 extending forward, and the ring-shaped cover 6 can enclose two sets of external circulation air inlets 3B. The engine compartment wall plate B is provided with an air passing port B1 which is opposite to the annular cover body 6, the annular cover body 6 is provided with an annular flanging 6a which surrounds along the circumferential direction of the annular cover body, and a filter screen 7 and a sealing part 8 are sequentially arranged between the annular flanging 6a and the engine compartment wall plate B. The sealing part 8 is an annular member with a hollowed-out middle, and the sealing part 8 is matched with the annular flanging 6a in shape and structure, so that the filter screen 7 can be exposed to the air passing port B1. The sealing part 8 has elasticity, and when the air conditioner case housing assembly A is fixedly assembled in an automobile, the elastic deformation trend of the sealing part 8 can force the filter screen 7 to be stably kept between the engine compartment wall plate B and the annular flanging 6a, so that the air conditioner case housing assembly A has the advantages of convenience and reliability in installation of the filter screen 7. Based on this, just can prevent with the just right filter screen 7 of engine compartment wallboard B air gap B1 that the big granule foreign matter in the engine compartment from the annular cover body 6 entering air conditioning case casing assembly A inside, stopped because of the foreign matter falls into the air conditioning pipeline and produces the noise, has positive effect to guarantee the normal operating of air conditioner.

By adopting the assembly mode, after the air conditioner box shell assembly A is fixedly assembled in an automobile, other complex fixing parts are not required to be added, and the filter screen 7 can be locked between the engine compartment wall plate B and the annular flanging 6a only by means of the elastic force of the sealing part 8, so that the air conditioner box shell assembly A has the advantages of being simple in structure and convenient to install.

In this embodiment, the sealing member 8 is made of foam, has advantages of good elasticity, hot pressure resistance and difficult falling, and can be fixed between the engine compartment wall plate B and the annular flange 6a for a long time. In addition, the foam can absorb wind noise caused by partial airflow entering the annular cover body 6, so that the riding experience of drivers and passengers is further improved.

Further, referring to fig. 13 and 14, bending structures 7a are respectively disposed on two sides of the filter screen 7, positioning grooves 6a1 are respectively disposed on two sides of the annular flange 6a, and the length of the positioning grooves 6a1 is matched with the length of the bending structures 7 a. When the filter screen 7 and the sealing part 8 are installed, the bending structures 7a are positioned and installed in the positioning grooves 6a1 in a one-to-one correspondence manner, and when the sealing part 8 and the filter screen 7 are fixed subsequently, the filter screen 7 can be prevented from shifting, so that the filter screen 7 is ensured to be always covered on the annular cover body 6.

In this embodiment, the screen 7 is a metal mesh or a plastic mesh. As shown in fig. 13, the screen 7 is composed of square grids 3b distributed in an array, and the side length of each square grid 3b is 6mm or less. By the design, large-particle foreign matters can be effectively prevented from entering the annular cover body 6, and normal operation of the automobile air conditioner is further ensured.

Referring to fig. 12, the engine compartment wall B has a planar area B2 corresponding to the air gap B1, and, in combination with fig. 11 and 14, it can be seen that the structure enclosed by the planar area B2, the sealing member 8, and the annular flange 6a are rectangular annular structures, when the air conditioner case housing assembly a is fixedly assembled on the engine compartment wall B, the sealing member 8 can abut against the planar area B2, and at this time, the elastic deformation tendency of the sealing member 8 can force the filter screen 7 to be more stably maintained between the engine compartment wall B and the annular flange 6 a.

Because the air conditioner provided in this embodiment is a central air conditioner, the two sets of internal circulation air inlets 3a face the direction of the main and auxiliary drivers respectively, and when the air conditioner is running, the wind noise emitted by the air flow entering the internal circulation air inlets 3a can be directly transmitted to the direction of the main and auxiliary drivers, so as to influence the riding experience of the drivers. Therefore, in order to alleviate noise, referring to fig. 15, the sound-proof cover 9 is installed on the converging housing 3 at the position corresponding to the internal circulation air inlet 3a, and the upper side of the sound-proof cover 9 is open, so that the internal circulation air flow can be led into the corresponding internal circulation air inlet 3a from bottom to top. Based on this, when the air conditioner is operated, inside gas can get into inner loop air intake 3a from top to bottom, has changed the air inlet direction of air current in traditional air intake structure, guarantees that the wind noise that the air current got into inner loop air intake 3a sent does not face the direction of main and auxiliary driving, reaches the purpose of initiatively making an uproar falls. Meanwhile, the sound-proof housing 9 can absorb noise generated when air flows enter the inner circulation air inlet 3a from top to bottom, so that wind noise transmitted to the direction of a cab from the position of the inner circulation air inlet 3a is further attenuated, NVH performance of an automobile air conditioner is improved, and comfort of drivers and passengers in a driving process is improved.

Further, as can be seen in fig. 17 and 18, the soundproof cover 9 includes a supporting frame 91 and soundproof cotton 92 covering the surface of the supporting frame 91, openings 911 are distributed on the supporting frame 91, and in this embodiment, the soundproof cotton 92 covers the outer side surface of the supporting frame 91. By the design, the soundproof cotton 92 can absorb noise caused by the fact that air flow enters the inner circulation air inlet 3a from the outer side direction of the soundproof cover 9, and can attenuate noise caused by the fact that air flow enters the inner circulation air inlet 3a from the inner side direction of the soundproof cover 9, and the noise reduction effect is good.

Referring to fig. 20, the supporting frame 91 includes a wind shielding surface 9a obliquely disposed outside the inner circulation air inlet 3a, and as can be seen in fig. 15, the lower end of the wind shielding surface 9a is fixedly connected with the collecting housing 3, and a gap is formed between the upper end and the inner circulation air inlet 3a. The two sides of the wind shielding surface 9a are respectively provided with a first bending part 9b and a second bending part 9c, and the end parts of the first bending part 9b and the second bending part 9c are respectively and fixedly assembled at the two ends of the internal circulation air inlet 3a. The inclined wind shielding surface 9a can play a role in facing the wind, and the vertical collision of air flow and the corresponding plate body is avoided, so that the noise of the air inlet position is further optimized. Referring again to fig. 19, in this embodiment, the soundproof cotton 92 matches the surface structure of the outside of the supporting frame 91. When the automobile air conditioner is in operation, the air flow of the internal circulation can only enter the internal circulation air inlet 3a from top to bottom from the upper side direction of the internal circulation air inlet 3a, so that the wind noise generated when the air flow enters the internal circulation air inlet 3a is further ensured not to face the direction of the main and auxiliary drivers.

Referring to fig. 20 again, for easy assembly, the upper end of the first bending portion 9b is provided with a first supporting lug 9b1 extending outwards, and as can be seen in connection with fig. 16 and 17, the position of the lower converging housing 32 at the lower end of the first supporting lug 9b1 is provided with a supporting body 3c, the supporting body 3c is provided with a first threaded inner hole b, the first supporting lug 9b1 is fixedly connected with the supporting body 3c through a screw, so that the first bending portion 9b can be stably fixed on the converging housing 3.

As shown in fig. 19 and 20, a second support lug 9c1 is provided at the upper end of the second bending portion 9c, a connecting post 9c2 is provided at the lower end of the second support lug 9c1, and a second threaded inner hole d is provided on the connecting post 9c 2. Referring to fig. 15 and 17 again, the upper bus housing 31 is provided with a support platform 3d abutting against the upper surface of the second support lug 9c1, and the screw is inserted into the second threaded inner hole d from the support platform 3d, so that the second support lug 9c1 can be fixedly connected to the support platform 3 d.

Referring to fig. 17 again, the outer end of the supporting platform 3d is provided with a fixing frame 3d1 extending vertically and downward, the middle of the fixing frame 3d1 is provided with a central through hole c, and as can be seen in fig. 15 and 19, one side of the connecting post 9c2 facing the central through hole c is provided with a protruding clamping tongue 9c3, and the clamping tongue 9c3 is used for supporting on the fixing frame 3d 1. In the present embodiment, the number of the tabs 9c3 is two. When the sound-proof housing 9 is installed, the clamping tongue 9c3 is supported on the fixing frame 3d1 to play a role in pre-positioning, so that the sound-proof housing 9 can be installed smoothly, and the sound-proof housing has the advantage of convenience in installation.

Referring to fig. 17 and 18, a second connection post 9d is provided at the bottom end of the supporting frame 91, and a connection plate 3e abutting against the upper surface of the second connection post 9d is provided on the lower bus housing 32, where the connection plate 3e is fixedly assembled on the second connection post 9d by a screw. By the design, the connection strength of the supporting framework 91 and the bus-bar housing 3 can be enhanced, so that the supporting framework 91 and the bus-bar housing 3 are connected more firmly. In addition, the second connecting column 9d can hide the thread section of the screw, prevent the thread section from being exposed, avoid the scratch of operators in the process of installing the supporting framework 91, and improve the attractiveness of equipment parts.

As shown in fig. 17, 18 and 19, the soundproof cotton 92 is fixed on the surface of the supporting frame 91 by a plurality of press nails 11, and in this embodiment, at least three groups of press nails 11 are provided to ensure that the soundproof cotton 92 can stably cover the surface of the supporting frame 91, thereby ensuring the noise reduction effect of the whole silencing structure.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a put formula double-layer flow air conditioner, includes air conditioning case casing assembly, its characterized in that: the air conditioner box shell assembly is provided with a middle partition plate (1) and outer shells (2) symmetrically arranged on two sides of the middle partition plate (1), one air flow channel (21) is formed between each of the two groups of outer shells (2) and the middle partition plate (1), an air inlet end (2 a) and an air outlet end (2 b) are arranged on each of the two air flow channels (21), the air outlet ends (2 b) of the two air flow channels (21) are arranged at the top of the outer shells (2), the air inlet ends (2 a) are arranged at the side parts of the front ends of the outer shells (2), a group of converging shells (3) are arranged at positions corresponding to the air inlet ends (2 a), each of the two groups of converging shells (3) is provided with an inner circulation air inlet (3 a) and an outer circulation air inlet (3 b), each of the inner circulation air inlets (3 a) of the two groups of converging shells (3) faces towards two sides of the width direction of the air conditioner box shell assembly, and each of the outer circulation air inlets (3 b) of the converging shells (3) faces towards the front ends of the air conditioner box shell assembly;

and air doors (4) are rotatably assembled in the two groups of converging shells (3), and the air doors (4) can selectively close the inner circulation air inlet (3 a) or the outer circulation air inlet (3 b).

2. The centrally-mounted bi-laminar air conditioner of claim 1, wherein: the top ends of the two groups of air doors (4) are respectively provided with a rotating shaft (4 a), the rotating shafts (4 a) upwards penetrate out of the corresponding outer shell (2), the two groups of outer shells (2) are respectively provided with an actuator, and each actuator is used for independently rotating the two groups of air doors (4).

3. The centrally-mounted bi-laminar air conditioner of claim 1, wherein: each air door (4) is of a fan-shaped structure and is provided with a fan-shaped vertical surface (4 b) and fan-shaped end surfaces (4 c) arranged on two sides of the fan-shaped vertical surface (4 b).

4. The centrally-mounted bi-laminar air conditioner of claim 1, wherein: the two groups of the confluence shells (3) are formed by connecting an upper confluence shell (31) and a lower confluence shell (32).

5. The centrally-mounted bi-laminar air conditioner of claim 1, wherein: the front end of the air conditioner box shell assembly is provided with a forward extending annular cover body (6), and two groups of external circulation air inlets (3 b) are all positioned in the annular cover body (6).

6. The centrally-mounted bi-laminar air conditioner of claim 5, wherein: the front end of the annular cover body (6) is sequentially provided with a filter screen (7) and a sealing part (8), and the sealing part (8) is of a hollow annular structure in the middle and is used for being abutted with an engine compartment wall plate; the sealing member (8) has elasticity.

7. The centrally-mounted bi-laminar air conditioner of claim 1, wherein: the two groups of converging shells (3) are respectively provided with a sound-proof cover (9) at the positions corresponding to the internal circulation air inlets (3 a), and the upper sides of the sound-proof covers (9) are respectively open so that air flow can be led into the corresponding internal circulation air inlets (3 a) from bottom to top.

8. The centrally-mounted bi-laminar air conditioner of claim 7, wherein: the sound-proof cover (9) comprises a supporting framework (91) and sound-proof cotton (92) covered on the surface of the supporting framework (91), and openings (911) are distributed on each supporting framework (91).

9. The centrally-mounted bi-laminar air conditioner of claim 8, wherein: each supporting framework (91) is including slope setting up in its face of keeping out the wind (9 a) that corresponds the inner loop air intake (3 a) outside, face of keeping out the wind (9 a) lower extreme all with corresponding conflux casing (3) fixed connection, all have the clearance between upper end and the inner loop air intake (3 a) that corresponds, each the both sides of face of keeping out the wind (9 a) all are equipped with first kink (9 b) and second kink (9 c) respectively, the tip of first kink (9 b) and second kink (9 c) is fixed assembly respectively at the both ends of inner loop air intake (3 a).

10. The centrally-mounted bi-laminar air conditioner of claim 6, wherein: the filter screen (7) is composed of square grids (7 b) distributed in an array mode, and the side length of each square grid (7 b) is smaller than or equal to 6mm.