A dual-side air intake air conditioning blower structure and air conditioning unit

Abstract

This invention discloses a dual-intake air conditioning blower structure and air conditioning unit, relating to the field of automotive air conditioning technology. The blower motor includes a motor body, a motor flange, and an impeller; the impeller includes a left half-section, a right half-section, and an impeller separator plate separating them; the motor flange is adjacent to the right half-section of the impeller and has multiple support ribs, forming a flange intake chamber communicating with the right half-section of the impeller between adjacent support ribs; a first air inlet is formed at the end of the left half-section of the impeller away from the motor flange. When the impeller rotates, a first airflow enters the left half-section of the impeller through the first air inlet, and a second airflow enters the right half-section of the impeller through the flange intake chamber, achieving air intake from both sides of the impeller. This invention replaces the independent dual impellers with a one-piece segmented impeller, reducing intake resistance, increasing intake air volume, and lowering the material cost.

Description

Technical Field

[0001] This invention relates to the field of automotive air conditioning technology, specifically to an air conditioning blower structure and air conditioning unit with dual-side air intake, applicable to both new energy commercial vehicles and traditional fuel commercial vehicles. Background Technology

[0002] With the development of new energy vehicles, OEMs are increasingly demanding high airflow and low cost performance from commercial vehicle air conditioning units within limited assembly space, posing a challenge to their design. Commercial vehicle air conditioning units typically employ a split structure, consisting of independent intake and distribution units to accommodate vehicle layout and space constraints. The intake method and impeller design of the blower structure directly affect the intake airflow, intake resistance, and overall cost.

[0003] To achieve a larger intake air volume within a limited impeller radial dimension, existing technologies mostly employ dual-impeller or dual-layer flow intake schemes.

[0004] Patent CN115008967A discloses an improved air supply method for a dual-layer air conditioning unit assembly with internal and external airflow. The blower impeller consists of an upper impeller and a lower impeller, separated by a partition plate. Gas flow is split through a periscope-style air intake pipe inserted into the upper impeller, reducing the unit's volume. However, this design relies on the periscope-style air intake pipe to supply air to the upper impeller, resulting in a relatively complex structure, and the air intake pipe occupies internal space within the unit.

[0005] Patent CN112659848A discloses a dual-layer flow air conditioning unit, in which the central axis of the fan is arranged horizontally, including a first impeller and a second impeller separated from each other, as well as corresponding first and second air chambers, used for introducing fresh air from the outside and internal air, respectively. This design uses two independent impellers for separate air intake, resulting in a relatively large number of components.

[0006] Patent CN118991351A discloses an axial-flow dual-layer air conditioning unit structure, in which the air inlet box and the distribution box are installed on the same straight line. The air inlet box contains a dual-head axial-flow fan, with an upper impeller at the top and a lower impeller at the bottom of the motor, respectively delivering air to the upper and lower flow channels. This design uses an axial-flow dual-impeller system, but due to the limited radial space of the impellers, it often results in higher costs to meet large air volume requirements.

[0007] In summary, the existing technology has the following shortcomings: (1) To achieve dual-side or dual-layer air intake, two independent impellers (such as axial flow double impellers) are generally used, which result in a large number of parts and complex structure, leading to high actual cost; (2) Some solutions rely on additional structures such as periscope-type air intake pipes to achieve air intake on one side, which occupies the internal space of the box and the air intake path is roundabout, resulting in greater air intake resistance; (3) Under the condition that the radial dimension of the blower impeller is limited, it is difficult to balance high intake air volume, low intake resistance and low cost. Summary of the Invention

[0008] In view of the above-mentioned problems in the existing technology, the technical problem to be solved by the present invention is to provide an air conditioning blower structure and air conditioning box with dual-side air intake under the condition that the radial dimension of the blower motor impeller is limited, so as to reduce the intake resistance, increase the intake air volume, and reduce the actual cost compared with axial flow dual impeller and other solutions.

[0009] To solve the above-mentioned technical problems, the present invention provides an air conditioning blower structure with dual-side air intake, including a blower motor, wherein the blower motor includes a motor body, a motor flange and an impeller, and the motor body is drivenly connected to the impeller; The impeller includes a left half-section, a right half-section, and an impeller partition plate. The impeller partition plate is located between the left half-section and the right half-section and separates the left half-section and the right half-section. The motor flange is located at one axial end of the impeller and adjacent to the right half of the impeller. The motor flange is provided with multiple support ribs, and a flange air inlet chamber is formed between adjacent support ribs. The flange air inlet chamber is connected to the right half of the impeller. The left half of the impeller forms a first air inlet at the axial end opposite to the motor flange, and the first air inlet and the flange air inlet are located on opposite sides of the impeller, respectively. When the motor body drives the impeller to rotate, the first airflow enters the left half of the impeller through the first air inlet, and the second airflow enters the right half of the impeller through the flange air inlet chamber, so that the blower motor can draw air from both sides of the impeller.

[0010] Furthermore, the impeller adopts an integrated segmented structure, meaning that the left half of the impeller, the impeller partition plate, and the right half of the impeller are integrally formed. Compared to using two independent impellers, the integrated segmented impeller significantly reduces the number of parts while achieving dual-sided air intake, thereby reducing the actual cost.

[0011] The impeller separator is located in the axial middle of the impeller, dividing the impeller cavity into two independent impeller left half and right half, so that the first airflow entering through the first air inlet and the second airflow entering through the flange air inlet flow in the two half, respectively, avoiding interference between the two airflows.

[0012] Furthermore, multiple support ribs on the motor flange are arranged at intervals along the circumference of the motor flange, and the air inlet cavity of the flange is formed between two adjacent support ribs and the motor flange.

[0013] Furthermore, the supporting ribs serve two purposes: firstly, to support the motor body, and secondly, the gaps between adjacent supporting ribs form an air intake channel for the second airflow. The motor body is located on the side of the motor flange away from the impeller, and the flange air intake chamber connects the opposite sides of the motor flange, allowing the right half of the impeller to communicate with the outside of the blower motor via the flange air intake chamber. Thus, air intake can be achieved even on the side of the impeller closest to the motor flange, eliminating the need for additional periscope-style air intake pipes, resulting in a smoother air intake path and lower air intake resistance.

[0014] To address the aforementioned technical problems, the present invention also provides an air conditioning unit, comprising a front air intake box and an internal air distribution box. The front air intake box houses the aforementioned dual-sided air intake air conditioning blower structure. The front air intake box further includes a left blower housing, a right blower housing, a first filter, and a second filter. The left blower housing and the right blower housing are fitted together and house the blower motor therein. The blower motor is mounted on the right blower housing. The first filter is located on the air intake side of the left blower housing, and the second filter is located on the air intake side of the right blower housing. A first airflow sequentially passes through the first filter and the left blower housing into the left half of the impeller, and a second airflow sequentially passes through the second filter, the right blower housing, and the flange air intake chamber into the right half of the impeller. The first filter and the second filter are located on opposite sides of the blower motor, achieving dual-sided filtration while simultaneously allowing air intake from both sides.

[0015] Furthermore, the front air intake box also includes a speed control module, which is installed on the right blower housing and is used to adjust the speed of the blower motor.

[0016] Furthermore, the front air intake box also includes a left blower cover and a right blower cover, with the first filter installed in the left blower cover and the second filter installed on the right blower cover, facilitating filter assembly and maintenance.

[0017] Furthermore, both the first filter and the second filter are paper filters.

[0018] Furthermore, the front air intake box also includes a damper and an external circulation air intake grille. The damper includes an internal circulation damper and an external circulation damper. External airflow enters the front air intake box through the external circulation air intake grille and the external circulation damper, while cabin airflow enters the front air intake box through the internal circulation damper, thereby realizing the switching between internal circulation air intake and external circulation air intake.

[0019] Furthermore, the front air intake box is located outside the cabin, and the interior air distribution box is located inside the cabin. Both the front air intake box and the interior air distribution box are fixed to the body sheet metal, thus forming a split air conditioning box structure. The interior air distribution box is equipped with an evaporator, a heating structure, and an air outlet structure.

[0020] Furthermore, the front air intake box also includes a front cover and a top cover, which are fitted onto the front air intake box.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) Reduce intake resistance: By setting the first intake port and the flange intake chamber on both sides of the impeller respectively, the intake is divided into two streams and enters from both sides of the impeller. The intake path is short and smooth. Compared with the scheme that relies on the periscope-type intake pipe and other roundabout intake paths, the intake resistance is lower. (2) Increase the intake air volume: Dual-side air intake improves the intake efficiency of the impeller. Under the condition of limited radial dimensions of the impeller, by increasing the height of the impeller and dividing it into sections, air can be introduced on both sides of the impeller, thereby increasing the intake air volume of the whole machine. (3) Reduce physical costs: The use of an integrated segmented impeller to replace two independent impellers (such as axial flow double impeller) reduces the number of parts and assembly processes, and significantly reduces physical costs compared to the traditional axial flow double impeller solution; (4) Save assembly space: By cleverly arranging the blower motor and its air intake structure, and by using the gap between the support ribs on the motor flange to form an air intake channel, air intake can be achieved on the side of the impeller close to the motor flange without additional air intake pipes, thereby achieving high air volume within the limited radial dimensions of the motor and the space of the housing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the assembly position of the air conditioning unit of the present invention on the vehicle. Figure 2 for Figure 1 A schematic diagram of the air conditioning unit structure after removing the body sheet metal; Figure 3 This is a schematic diagram of the internal structure of the front air intake box of the present invention after removing the front cover and the top cover of the air intake box. Figure 4 for Figure 3 A schematic diagram of the internal structure after removing the left and right covers of the blower. Figure 5 This is a schematic diagram illustrating the structure and working principle of the blower motor of the present invention; Figure 6 This is a cross-sectional view of the front air inlet box of the present invention; Figure 7 This is a schematic diagram of the airflow simulation inside the front air intake box of the present invention; Figure 8 This is a cross-sectional view of an axial flow double impeller fan in the prior art.

[0024] Explanation of reference numerals in the attached diagram: 100 - Air inlet box; 110 - Body sheet metal; 120 - Air distribution box; 200 - Front cover of air inlet box; 210 - Top cover of air inlet box; 300 - Internal circulation damper; 310 - External circulation damper; 320 - External circulation air inlet grille; 330 - Right side cover of blower; 340 - Right side housing of blower; 350 - Left side housing of blower; 360 - Left side cover of blower; 400 - Left side paper filter; 410 - Speed ​​control module; 420 - Right side paper filter; 430 - Blower motor; 500 - Impeller; 510 - Motor Flange; 520-Motor body; 530-Impeller partition; 540-Left half of impeller; 550-Right half of impeller; 560-Support rib; 570-Flange inlet chamber; 575-Impeller rotation direction; 580-Airflow direction in the left half of impeller; 590-Airflow direction in the right half of impeller; 610-Airflow direction in the left half of housing; 620-Airflow direction in the right half of housing; 800-Axial flow blower motor; 810-Left impeller; 820-Right impeller; 830-Airflow direction; 840-Paper filter; 850-External circulation damper. Detailed Implementation

[0025] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the drawings are not necessarily drawn to scale, and are only used to illustrate exemplary embodiments of the present invention and should not be regarded as a limitation on the scope of protection of the present invention; in the following description, the same reference numerals denote the same or similar parts, and directional terms (such as left, right, top, and bottom) are based only on the relative positional relationships shown in the drawings and do not constitute a limitation on the present invention.

[0026] This embodiment provides an air conditioning blower structure with dual-side air intake and an air conditioning box containing the blower structure. The air conditioning box is applied to a new energy heavy-duty commercial vehicle platform and is also applicable to a traditional fuel commercial vehicle platform.

[0027] like Figure 1As shown, the air conditioning unit in this embodiment consists of two independent box structures: an air intake box 100 and an air distribution box 120. The air intake box 100 is the aforementioned front bulkhead air intake box, and the air distribution box 120 is the aforementioned interior air distribution box. Both the air intake box 100 and the air distribution box 120 are fixed to the body sheet metal 110. The air intake box 100 is located outside the cabin, and the air distribution box 120 is located inside the cabin. The two are interconnected through air vents on the body sheet metal 110. This split arrangement allows for the placement of the larger air intake and blower structures outside the cabin, saving interior space. Furthermore, it facilitates the separate assembly of the two boxes according to the overall vehicle layout, adapting to the limited assembly space of commercial vehicles.

[0028] like Figure 2 As shown, after removing the body sheet metal 110, it can be seen that the exterior of the air intake box 100 is closed by the front cover 200 and the upper cover 210 of the air intake box. The front cover 200 and the upper cover 210 of the air intake box are detachably connected to the shell of the air intake box 100 to facilitate the assembly and maintenance of internal components.

[0029] like Figure 3 As shown, after removing the front cover 200 and the upper cover 210 of the air intake box, the air intake box 100 contains, from the intake side to the blower side, an internal circulation damper 300, an external circulation damper 310, and an external circulation air intake grille 320. The external circulation air intake grille 320 is located on the side of the air intake box 100 facing the outside and is used to introduce fresh air from outside the vehicle and block larger particles of debris. The external circulation damper 310 is located inside the external circulation air intake grille 320 and is used to control the opening and closing of the external circulation fresh air passage. The internal circulation damper 300 is used to control the opening and closing of the cabin return air passage. By adjusting the opening of the internal circulation damper 300 and the external circulation damper 310, multiple air intake modes such as pure internal circulation, pure external circulation, and mixed internal and external circulation can be switched to adapt to different in-vehicle air conditioning needs.

[0030] like Figure 3 and Figure 4 As shown, the air inlet housing 100 also includes a left blower housing 350, a right blower housing 340, a left blower cover 360, and a right blower cover 330. The left blower housing 350 and the right blower housing 340 are fitted together to form a cavity for accommodating the blower motor 430. The blower motor 430 and the speed control module 410 are mounted on the right blower housing 340, and the left blower housing 350 is fastened to the right blower housing 340 from the other side, thereby stably supporting and positioning the blower motor 430 within the air inlet housing 100. The speed control module 410 is electrically connected to the blower motor 430 and is used to adjust the speed of the blower motor 430, thereby adjusting the air volume of the air conditioner.

[0031] After removing the right-side cover 330 and the left-side cover 360 of the blower, the left-side paper filter 400 and the right-side paper filter 420 are visible. In this embodiment, the first filter is the left-side paper filter 400, and the second filter is the right-side paper filter 420. The left-side paper filter 400 is installed in the left-side cover 360 of the blower and is located on the air intake side of the left housing 350 of the blower. The right-side paper filter 420 is installed on the right-side cover 330 of the blower and is located on the air intake side of the right housing 340 of the blower. The left-side paper filter 400 and the right-side paper filter 420 are respectively located on the left and right sides of the blower motor 430, so that the airflow entering both sides of the impeller 500 is filtered before entering the impeller 500, achieving double-sided filtration and preventing external impurities from entering the impeller 500 and downstream components such as the evaporator. The first and second filters are not limited to paper filters; they can also be air filtration elements such as filter screens, filter cotton, or non-woven fabric filter elements, as long as they can filter the airflow entering both sides of the impeller 500.

[0032] like Figure 5 As shown, the blower motor 430 consists of an impeller 500, a motor flange 510, and a motor body 520.

[0033] The impeller 500 is generally cylindrical, with multiple blades arranged circumferentially around its outer periphery. Airflow enters the impeller 500 from its axial end and is thrown radially outward by the impeller. The impeller 500 is divided into a left half-region 540 and a right half-region 550 along its axial direction, with an impeller partition 530 positioned between them. The impeller partition 530 is generally an annular disc perpendicular to the impeller 500 axis, dividing the impeller 500's inner cavity axially into two independent and non-communicating intake regions. This ensures that the airflow entering the left half-region 540 and the airflow entering the right half-region 550 do not cross paths or interfere with each other within the impeller 500. In this embodiment, the left half of the impeller 540, the impeller partition plate 530, and the right half of the impeller 550 are integrally formed to constitute an integrated segmented impeller. Compared with the structure assembled from two separate independent impellers, the integrated segmented impeller has fewer parts, a simpler assembly process, and is easier to ensure overall dynamic balance, thereby reducing the actual cost.

[0034] The motor flange 510 is located at one axial end of the impeller 500 and adjacent to the right half of the impeller 550. It supports the motor body 520 and mounts the blower motor 430 onto the right blower housing 340. The motor flange 510 has multiple support ribs 560, which are spaced apart circumferentially. A perforated flange air inlet chamber 570 is formed between adjacent support ribs 560 and the motor flange 510. In other words, the motor flange 510 is not a closed solid disc, but a perforated skeleton structure composed of support ribs 560. The support ribs 560 provide support and connection between the outer edges of the motor body 520 and the motor flange 510, undertaking the installation and positioning of the motor body 520. Furthermore, the perforated gaps between adjacent support ribs 560 form the flange air inlet chamber 570 for airflow. The motor body 520 is located on the side of the motor flange 510 away from the impeller 500, and the output shaft of the motor body 520 passes through the motor flange 510 and is connected to the impeller 500 for transmission. The flange inlet chamber 570 extends along the axial direction of the impeller 500 through the opposite sides of the motor flange 510, so that the right half of the impeller 550 is connected to the outside of the blower motor 430 (i.e., the right side of the blower housing 340) through the flange inlet chamber 570. Thus, even at the end of the impeller 500 closest to the motor body 520 (i.e., the side of the motor flange 510), airflow can enter the right half of the impeller 550 through the flange inlet chamber 570 without the need for a detour intake structure such as a periscope-type intake pipe on that side.

[0035] The left half of the impeller 540, away from the motor flange 510, is open at the other end of the axial direction (i.e., the end of the impeller 500 away from the motor body 520) to form a first air inlet, through which airflow can directly enter the left half of the impeller 540. Thus, the first air inlet and the flange air inlet chamber 570 are located at opposite ends of the impeller 500 along the axial direction, thereby forming an air intake structure that allows air to enter from both sides of the impeller 500.

[0036] The number of support ribs 560 can be set according to the support requirements of the motor body 520 and the required air intake area, for example, 3 to 12. Under the premise of ensuring reliable support for the motor body 520, sufficient air intake flow area is formed between adjacent support ribs 560 to reduce the flow resistance of the second airflow when it flows through the flange air intake cavity 570.

[0037] The working process of this embodiment is as follows: After the motor body 520 is powered on, it drives the impeller 500 to rotate in the impeller rotation direction 575. The negative pressure generated by the rotation of the impeller 500 causes the airflow in the air inlet box 100 to be drawn into the impeller 500. At this time, the air intake is divided into left and right streams by the impeller partition plate 530, which enter from both sides of the impeller 500 respectively. The first airflow, namely the left airflow, enters the left blower housing 350 after being filtered by the left paper filter 400 from the air inlet box 100, and then enters the left half of the impeller 540 through the first air inlet of the left half of the impeller 540. Its flow direction in the left half of the impeller 540 is as shown in the airflow direction 580 of the left half of the impeller. The second airflow, namely the right-side airflow, enters the right blower housing 340 after being filtered by the right-side paper filter 420 from the air inlet box 100, and then enters the right half-zone 550 of the impeller through the flange air inlet chamber 570 on the motor flange 510. Its flow direction in the right half-zone 550 of the impeller is as shown in the airflow direction 590 of the right half-zone of the impeller.

[0038] The two airflows are ejected from the impeller 500 in the left half-region 540 and the right half-region 550 of the impeller, respectively. Due to the separation effect of the impeller partition plate 530, they do not interfere with each other. They then merge and are sent into the air distribution box 120 through the air inlet box 100.

[0039] like Figure 6 As shown, the airflow direction 610 in the left half of the housing and the airflow direction 620 in the right half of the housing correspond to the first airflow and the second airflow mentioned above, respectively. The two airflows enter the impeller 500 from the left and right sides of the blower motor 430, thereby realizing the dual-side air intake of the blower motor 430.

[0040] like Figure 7 As shown in the figure, the flow field simulation inside the air inlet box 100 shows that the internal circulation air is divided into two routes after entering the air inlet box 100, and enters the impeller 500 from the left and right sides of the blower motor 430 respectively. This is consistent with the above structural design and airflow path, and verifies the feasibility of dual-side air intake.

[0041] The reason why this embodiment can achieve high intake air volume, low intake resistance, and low cost under the condition of limited radial dimensions of impeller 500 is as follows: First, traditional single-sided intake impellers can only intake air from one end, and the intake area is limited when the radial dimensions of the impeller are limited. This embodiment increases the axial height of impeller 500 and divides it into a left half-region 540 and a right half-region 550 by impeller partition plate 530, so that air can be intake from both ends of impeller 500 along the axial direction. This increases the effective intake area without increasing the radial dimensions of the impeller, thereby increasing the intake air volume. Second, the first airflow enters the first intake port and the second airflow enters the two sides of impeller 500 respectively through the flange intake chamber 570. The intake path is short and smooth, and there is no need to rely on periscope-type intake pipes or other circuitous structures, so the intake resistance is low. Third, the integrated segmented impeller 500 replaces the two independent impellers in the traditional axial flow double impeller scheme, and the air intake channel is formed by the support ribs 560 of the motor flange 510 itself, eliminating the need for a separate second impeller and additional air intake pipes, reducing the number of parts and assembly processes, thereby reducing the actual cost.

[0042] In contrast, such as Figure 8 As shown, the existing axial flow dual-impeller fan mainly consists of an axial flow blower motor 800, a paper filter 840, and an external circulation damper 850. The axial flow blower motor 800 includes two independent left impellers 810 and 820. When the blower motor is working, its internal flow field is as shown in the airflow direction 830. This solution requires two independent impellers, resulting in a large number of parts and high cost. In contrast, this embodiment uses an integrated segmented impeller 500 to replace the independent left impeller 810 and right impeller 820. While achieving dual-sided air intake and ensuring sufficient air intake volume, it reduces the number of impellers, simplifies the structure, and thus lowers the actual cost.

[0043] The air distribution box 120 is equipped with an evaporator, a heating structure, and an air outlet structure. The airflow, after being pressurized by the blower motor 430 from both sides, enters the air distribution box 120, and is successively cooled and dehumidified by the evaporator, or heated by the heating structure, and then delivered to various air outlet areas in the vehicle through the air outlet structure, thereby realizing the cooling, heating, and air supply regulation of the air in the vehicle.

[0044] It should be noted that the present invention is not limited to the specific embodiments described above. Under the concept of the present invention: the impeller separator 530 can be integrally formed with the left half-section 540 and the right half-section 550 of the impeller, or it can be assembled as a separate component between the left half-section 540 and the right half-section 550 of the impeller, as long as it can axially divide the inner cavity of the impeller 500 into two non-communicating air intake areas; the axial lengths of the left half-section 540 and the right half-section 550 of the impeller can be equal, or they can be unequal depending on the required air intake volume on both sides; in addition to paper filters, the first filter and the second filter can also use filter screens, filter cotton, or other air filtration elements; the number, shape, and distribution of the support ribs 560 can be adjusted according to the support requirements and air intake area requirements of the motor body 520, as long as a flange air intake cavity 570 is formed between adjacent support ribs 560. The above alternative methods can be applied individually or in combination with each other in the present invention, and all fall within the protection scope of the present invention.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0046] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A dual-side air intake air conditioning blower structure, characterized in that, It includes a blower motor (430), which includes a motor body (520), a motor flange (510) and an impeller (500), wherein the motor body (520) and the impeller (500) are connected in a transmission connection; The impeller (500) includes a left half-section (540), a right half-section (550), and an impeller partition (530). The impeller partition (530) is located between the left half-section (540) and the right half-section (550) of the impeller and separates the left half-section (540) and the right half-section (550) of the impeller. The motor flange (510) is located at one axial end of the impeller (500) and adjacent to the right half of the impeller (550). The motor flange (510) is provided with a plurality of support ribs (560), and a flange air inlet chamber (570) is formed between adjacent support ribs (560). The flange air inlet chamber (570) is connected to the right half of the impeller (550). The left half of the impeller (540) forms a first air inlet at the other end of the axial direction away from the motor flange (510). The first air inlet and the flange air inlet chamber (570) are located on opposite sides of the impeller (500). When the motor body (520) drives the impeller (500) to rotate, the first airflow enters the left half of the impeller (540) through the first air inlet, and the second airflow enters the right half of the impeller (550) through the flange air inlet chamber (570), so that the blower motor (430) can draw air from both sides of the impeller (500).

2. The air conditioning blower structure with dual-side air intake according to claim 1, characterized in that, The left half of the impeller (540), the impeller partition plate (530), and the right half of the impeller (550) are integrally formed.

3. The air conditioning blower structure with dual-side air intake according to claim 1, characterized in that, The plurality of support ribs (560) are arranged at intervals along the circumference of the motor flange (510), and the flange air inlet cavity (570) is formed between two adjacent support ribs (560) and the motor flange (510).

4. The air conditioning blower structure with dual-side air intake according to claim 1, characterized in that, The motor body (520) is located on the side of the motor flange (510) away from the impeller (500), and the flange air inlet chamber (570) passes through the opposite sides of the motor flange (510) so that the right half of the impeller (550) is connected to the outside of the blower motor (430) through the flange air inlet chamber (570).

5. An air conditioning unit, characterized in that, It includes a front air intake box (100) and an interior air distribution box (120), wherein the front air intake box (100) is provided with an air conditioning blower structure with dual-side air intake as described in claim 1; The front air intake box (100) also includes a left blower housing (350), a right blower housing (340), a first filter (400), and a second filter (420). The left blower housing (350) and the right blower housing (340) are fitted together and the blower motor (430) is housed therein. The blower motor (430) is mounted on the right blower housing (340). The first filter (400) is located on the air intake side of the left blower housing (350), and the second filter (420) is located on the air intake side of the right blower housing (340). The first airflow passes through the first filter (400) and the left blower housing (350) in sequence and enters the left half of the impeller (540). The second airflow passes through the second filter (420), the right blower housing (340) and the flange air inlet chamber (570) in sequence and enters the right half of the impeller (550). The cabin air distribution box (120) is connected to the front air inlet box (100).

6. An air conditioning unit according to claim 5, characterized in that, The front air intake box (100) also includes a speed control module (410), which is installed on the right blower housing (340).

7. An air conditioning unit according to claim 5, characterized in that, The front air intake box (100) also includes a left blower cover (360) and a right blower cover (330), with the first filter (400) installed in the left blower cover (360) and the second filter (420) installed on the right blower cover (330).

8. An air conditioning unit according to claim 5, characterized in that, Both the first filter (400) and the second filter (420) are paper filters.

9. An air conditioning unit according to claim 5, characterized in that, The front air intake box (100) also includes a damper and an external circulation air intake grille (320). The damper includes an internal circulation damper (300) and an external circulation damper (310). External airflow enters the front air intake box (100) through the external circulation air intake grille (320) and the external circulation damper (310).

10. An air conditioning unit according to claim 5, characterized in that, The front air intake box (100) is located outside the cabin, and the cabin air distribution box (120) is located inside the cabin. Both the front air intake box (100) and the cabin air distribution box (120) are fixed on the body sheet metal (110).

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