Double-flow blower, in-vehicle air conditioner assembly, and automobile air conditioner
Patent Information
- Application Number
- PCT/CN2026/078184
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-02-20
- Filing Date
- 2026-02-10
- Publication Date
- 2026-08-27
Smart Images
Figure CN2026078184_27082026_PF_FP_ABST
Abstract
Description
Dual-layer flow blower, vehicle air conditioning unit and automotive air conditioner Technical Field
[0001] This application relates to the field of air conditioning technology, specifically to a dual-flow blower, a vehicle air conditioning unit, and an automotive air conditioner. Background Technology
[0002] The vehicle air conditioning unit is one of the core components of the automotive air conditioning system, responsible for regulating the temperature, humidity, and air circulation inside the vehicle. As shown in Figure 1, the vehicle air conditioning unit includes a blower 100' for introducing air and an interior heat exchanger 200' for exchanging heat with the introduced air. Currently, most blowers 100' adopt a dual-layer flow blower, which can achieve airflow with different directions, speeds, and temperatures in two layers, thereby precisely delivering air to different areas inside the vehicle. For example, the driver and passenger areas in the front row can independently adjust the temperature and fan speed according to their needs, improving individual comfort. Please continue to refer to Figure 1. In existing dual-layer flow blowers, the air outlet directions of the upper and lower layers are arranged in the same direction (i.e., the air outlet directions of the upper and lower layers are the same). The axial direction of the blower 100' (the direction shown by the dotted vertical line) is set at a large angle (generally close to 90°) to the air inlet direction of the cold source 210' in the interior heat exchanger 200' (the direction shown by the arrow). The radial dimension of the blower 100' is larger than its axial dimension. Therefore, the current arrangement of the blower 100' and the indoor heat exchanger 200' results in a large space occupied by the air conditioning unit. Furthermore, due to the influence of the air outlet direction of the blower 100', the axial direction of the blower 100' cannot be aligned with the air inlet direction of the cold source 210', making it difficult to miniaturize the overall size of the air conditioning unit.
[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention
[0004] In view of the problems in the prior art, the purpose of this application is to provide a dual-flow blower, a vehicle air conditioning unit and an automotive air conditioner, so that the air outlet direction of the dual-flow blower is in the same direction as its axis, thereby reducing the layout area of the air conditioning unit.
[0005] This application provides a dual-layer flow blower, including:
[0006] The volute is internally divided into an upper laminar flow space and a lower laminar flow space; the volute is provided with a first air outlet connected to the upper laminar flow space and a second air outlet connected to the lower laminar flow space; the first air outlet and the second air outlet are located on both sides of the axial direction of the volute.
[0007] An impeller assembly includes an upper impeller, a lower impeller, and a partition for separating the upper impeller and the lower impeller. The upper impeller is disposed in the upper laminar flow space, and the lower impeller is disposed in the lower laminar flow space. The blades of the upper impeller and the lower impeller are backward-curved blades.
[0008] A drive mechanism drives the impeller assembly to rotate.
[0009] In some embodiments, the positions of the first air outlet and the second air outlet are located on opposite sides of the axial direction of the volute.
[0010] In some embodiments, the volute includes an upper volute, a lower volute, and a partition plate. The partition plate is located between the upper volute and the lower volute, and the partition plate and the upper volute together form the upper laminar flow space. The partition plate and the lower volute together form the lower laminar flow space.
[0011] In some embodiments, the upper volute is provided with the first air outlet, and the angle formed by the lines connecting the inner side of the first air outlet and the outer side of the first air outlet to the center of the upper volute is θ1, satisfying: 70°≤θ1≤180°.
[0012] In some embodiments, the lower volute is provided with a second air outlet, and the angle formed by the lines connecting the inner side of the second air outlet and the outer side of the second air outlet to the center of the lower volute is θ2, satisfying: 70°≤θ2≤180°.
[0013] In some embodiments, the upper impeller includes a first hub flange and a plurality of first blades arranged circumferentially along the first hub flange; the lower impeller includes a second hub flange and a plurality of second blades arranged circumferentially along the second hub flange.
[0014] In some embodiments, the upper volute is provided with a first air inlet, a first air outlet duct, and a first air outlet, with the two ends of the first air outlet duct connected to the first air inlet and the first air outlet, respectively; the lower volute is provided with a second air inlet, a second air outlet duct, and a second air outlet, with the two ends of the second air outlet duct connected to the second air inlet and the second air outlet, respectively.
[0015] In some embodiments, the drive mechanism includes a rotating shaft fixedly connected to the impeller and a drive motor for driving the rotating shaft to rotate, the drive motor being disposed on the outside of the volute.
[0016] This application embodiment also provides a vehicle air conditioning unit, including the dual-flow blower as described above and an indoor heat exchanger disposed on the air outlet side of the dual-flow blower, wherein the axial direction of the dual-flow blower is the same as the air inlet direction of the heat exchanger.
[0017] This application also provides an automotive air conditioner, including the vehicle air conditioning unit as described above.
[0018] The dual-layer flow blower, vehicle air conditioning unit, and automotive air conditioner provided in this application have the following advantages:
[0019] Backward-curved blades have the characteristics of dispersing the airflow from the fan, reducing the air velocity, and facilitating steering. Therefore, by setting the impeller assembly to backward-curved blades, the airflow direction of the volute can be set to axial flow. Consequently, when arranging the air conditioning unit, the blower can achieve a layout where its axial direction is consistent with the airflow direction of the indoor heat exchanger, thus saving space occupied by the blower, making the air conditioning unit structure compact, and reducing the overall volume of the air conditioning unit. By placing the first and second air outlets of the volute on both sides of the volute, the airflow from the two outlets can be prevented from interfering with each other, improving the efficiency of the fan in delivering air to different areas of the passenger compartment. Attached Figure Description
[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.
[0021] Figure 1 is a structural schematic diagram of an air conditioning unit in the prior art;
[0022] Figure 2 is a structural schematic diagram of an air conditioning unit according to an embodiment of this application;
[0023] Figure 3 is a schematic cross-sectional view of the blower in Figure 2 cut along section line CC;
[0024] Figure 4 is a schematic cross-section of the blower in Figure 2 cut along section line DD.
[0025] Reference numerals: 100 Dual-layer flow blower; 212 First blade; 10 Volute; 22 Lower impeller; 11 Upper volute; 221 Second hub flange; 11a First air outlet; 222 Second blade; 11b First air inlet; 23 Baffle; 12 Lower volute; 24 Guide plate; 12a Second air outlet; 30 Drive mechanism; 12b Second air inlet; 200 Indoor heat exchanger; 21 Upper impeller; 210 Cold source; 211 First hub flange; 220 Heat source. Detailed Implementation
[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.
[0027] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.
[0028] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0029] It should be further understood that the terms "comprising" or "including" indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" as used herein are interpreted as inclusive, or mean any one or any combination thereof. Therefore, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C." Exceptions to this definition only arise when a combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.
[0030] To address the problems in the prior art, this application provides a dual-laminar flow blower, comprising: a volute, the interior of which is divided into an upper laminar flow space and a lower laminar flow space; a first air outlet on the volute, communicating with the upper laminar flow space, and a second air outlet on the volute, communicating with the lower laminar flow space; the first air outlet and the second air outlet are located on opposite axial sides of the volute; an impeller assembly, including an upper impeller, a lower impeller, and a partition for separating the upper impeller and the lower impeller, the upper impeller being located in the upper laminar flow space, and the lower impeller being located in the lower laminar flow space, the blades of the upper impeller and the lower impeller being backward-curved blades; and a drive mechanism for driving the impeller assembly to rotate. Backward-curved blades have the advantages of dispersing the airflow from the fan, reducing air velocity, and facilitating steering. In this technical solution, by setting the impeller assembly as backward-curved blades, the airflow direction of the volute can be set to axial direction. Consequently, when arranging the air conditioning unit, the blower can achieve a layout where its axial direction is consistent with the airflow direction of the indoor heat exchanger, thus saving space occupied by the blower, making the air conditioning unit structure compact, and reducing the overall volume of the air conditioning unit. By placing the first and second air outlets of the volute on both sides of the volute, the airflow from the two outlets can be prevented from interfering with each other, improving the efficiency of the fan in delivering air to different areas of the passenger compartment.
[0031] The dual-layer flow blower provided in this application will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments shown are not intended to limit the scope of protection of this application.
[0032] Figure 2 is a schematic diagram of a double-laminar flow blower provided in an embodiment of this application; Figure 3 is a cross-sectional schematic diagram of the blower in Figure 2 cut along section line CC; Figure 4 is a cross-sectional schematic diagram of the blower in Figure 2 cut along section line DD. As shown in Figures 2 to 4, the double-laminar flow blower 100 includes a volute 10, an impeller assembly, and a drive mechanism 30. The interior of the volute 10 is divided into an upper laminar flow space and a lower laminar flow space. The volute 10 is provided with a first air outlet 11a and a second air outlet 12a. The first air outlet 11a is connected to the upper laminar flow space, and the second air outlet 12a is connected to the lower laminar flow space. The first air outlet 11a and the second air outlet 12a are respectively located on both axial sides of the volute 10. The impeller assembly includes an upper impeller 21, a lower impeller 22, and a partition 23 for separating the upper and lower impellers. The upper impeller 21 is located in the upper laminar flow space, and the lower impeller 22 is located in the lower laminar flow space. The blades of the upper impeller 21 and the lower impeller 22 are backward-curved blades. The drive mechanism 30 is used to drive the impeller assembly to rotate.
[0033] Backward-curved blades have the characteristics of dispersing the airflow from the fan, reducing the air velocity, and facilitating steering. Therefore, by setting the impeller assembly to backward-curved blades, the airflow direction of the volute can be set to axial flow. Consequently, when arranging the air conditioning unit, the blower can achieve a layout where its axial direction is consistent with the airflow direction of the indoor heat exchanger, thus saving space occupied by the blower, making the air conditioning unit structure compact, and reducing the overall volume of the air conditioning unit. By placing the first and second air outlets of the volute on both sides of the volute, the airflow from the two outlets can be prevented from interfering with each other, improving the efficiency of the fan in delivering air to different areas of the passenger compartment.
[0034] Furthermore, in some embodiments, the first air outlet 11a and the second air outlet 12a are located on opposite sides symmetrical about the axial direction of the volute 10. That is, the first air outlet 11a is located on the first side of the volute 10, and the second air outlet 12a is located on the second side of the volute 10, with the first and second sides being symmetrical about the axial direction of the volute. This arrangement of the positions of the first air outlet 11a and the second air outlet 12a reduces the difficulty of manufacturing the volute 10.
[0035] Further, as shown in Figures 3 and 4, in this embodiment, the volute 10 includes an upper volute 11, a lower volute 12, and a baffle plate (not shown in the figures). The baffle plate is located between the upper volute 11 and the lower volute 12. The baffle plate and the upper volute 11 together form an upper laminar flow space, and the baffle plate and the lower volute 12 together form a lower laminar flow space. The upper and lower laminar flow spaces are not connected, so that the upper impeller 21 and the lower impeller 22 will not interfere with each other during operation.
[0036] It should be noted that the outer diameters of the upper volute 11 and the lower volute 12 can be the same, or the outer diameter of the upper volute 11 can be larger than that of the lower volute 12, or the outer diameter of the upper volute 11 can be smaller than that of the lower volute 12. The specific dimensions of the upper volute 11 and the lower volute 12 can be set according to actual needs to meet the ratio requirements of the output air volume of the upper and lower laminar flow spaces. No specific limitation is made here.
[0037] Furthermore, as shown in Figures 2 and 3, in some embodiments, the upper volute 11 is provided with a first air outlet 11a. The angle formed by the lines connecting the inner side and the outer side of the first air outlet 11a to the center of the upper volute 11 is θ1, satisfying: 70°≤θ1≤180°. The angle θ1 affects the airflow of the air outlet of the upper volute 11. By reasonably setting the angle θ1, the airflow of the upper volute 11 can meet the requirements.
[0038] Furthermore, as shown in Figures 2 and 4, in some embodiments, the lower volute 12 is provided with a second air outlet 12a. The angle formed by the lines connecting the inner side of the second air outlet 12a and the outer side of the second air outlet 12a to the center of the lower volute 12 is θ2, satisfying: 70°≤θ2≤180°. The angle θ2 affects the airflow of the air outlet of the lower volute 12. By setting a reasonable angle θ2, the airflow of the lower volute can meet the requirements.
[0039] Furthermore, in some embodiments, as shown in Figures 2 to 4, the upper volute 11 is further provided with a first air inlet 11b and a first air outlet duct, with the two ends of the first air outlet duct connected to the first air inlet 11b and the first air outlet 11a, respectively; the lower volute 12 is further provided with a second air inlet 12b and a second air outlet duct, with the two ends of the second air outlet duct connected to the second air inlet 12b and the second air outlet 12a, respectively. The first air inlet 11b can be connected to either external fresh air or in-vehicle recirculated air, and the second air inlet 12b can be connected to the other, thereby enabling the upper impeller 21 and the lower impeller 22 to accurately deliver the recirculated air entering through different channels to different areas of the passenger compartment, reducing energy consumption.
[0040] Furthermore, in some embodiments, as shown in Figures 3 and 4, the upper impeller 21 includes a first hub flange 211 and a plurality of first blades 212 arranged circumferentially along the first hub flange 211; the lower impeller 22 includes a second hub flange 221 and a plurality of second blades 222 arranged circumferentially along the second hub flange 221. However, the structures of the upper impeller 21 and the lower impeller 22 are not limited to the structures shown in the figures, and can also be other impeller structures in the prior art. The first blades 212 and the second blades 222 are both backward-curved blades, meaning that the curvature direction of the blades is opposite to the direction of airflow rotation. After the airflow enters the blades, it flows along the curvature direction of the trailing edge of the blades. Setting the blades of the impeller as backward-curved blades can reduce the turbulence generated during impeller operation, ensure smooth airflow, stabilize the airflow, and reduce operating noise.
[0041] It should be noted that the height, diameter, and number of blades of the upper impeller 21 and the lower impeller 22 can be the same or different. The specific settings can be made according to the actual air volume requirements, and no specific limitation is made here.
[0042] Furthermore, as shown in Figure 2, the impeller assembly also includes a guide vane 24 for guiding airflow, located inside the lower impeller 22. The guide vane 24 and the baffle 23 are coaxially arranged. Specifically, the outer wall of the guide vane 24 is designed with an arc surface structure, so that the internal circulating air flows smoothly between the guide vane 24 and the baffle 23 without generating turbulence.
[0043] Furthermore, in some embodiments, the drive mechanism 30 includes a shaft fixedly connected to the impeller assembly and a drive motor for rotating the shaft, the drive motor being located on the outside of the volute 10.
[0044] Please refer to Figure 2. This embodiment of the application also provides a vehicle air conditioning unit, including a dual-flow blower 100 as described above and an indoor heat exchanger 200 disposed on the air outlet side of the dual-flow blower 100. The axial direction of the dual-flow blower 100 is the same as the air inlet direction of the indoor heat exchanger 200. In this embodiment, the indoor heat exchanger 200 includes a cold source 210 and a heat source 220. Since the dual-flow blower 100 discharges air along its axial direction, the axial direction of the dual-flow blower 100 can be arranged parallel to the air inlet direction of the indoor heat exchanger 200, thereby reducing the occupied area of the vehicle air conditioning unit, making the structure of the vehicle air conditioning unit compact, and reducing the volume of the vehicle air conditioning unit.
[0045] This application also provides an automotive air conditioner, including the vehicle air conditioning unit as described above. The automotive air conditioner achieves all the technical effects of the aforementioned vehicle air conditioning unit, which will not be elaborated further here.
[0046] In summary, the dual-layer flow blower, vehicle air conditioning unit, and automotive air conditioner provided in this application have the following advantages:
[0047] Backward-curved blades have the characteristics of dispersing the airflow from the fan, reducing the air velocity, and facilitating steering. Therefore, by setting the impeller assembly to backward-curved blades, the airflow direction of the volute can be set to axial flow. Consequently, when arranging the air conditioning unit, the blower can achieve a layout where its axial direction is consistent with the airflow direction of the indoor heat exchanger, thus saving space occupied by the blower, making the air conditioning unit structure compact, and reducing the overall volume of the air conditioning unit. By placing the first and second air outlets of the volute on both sides of the volute, the airflow from the two outlets can be prevented from interfering with each other, improving the efficiency of the fan in delivering air to different areas of the passenger compartment.
[0048] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.
Claims
1. A double-layer flow blower, characterized in that, include: A volute, the interior of which is divided into an upper laminar flow space and a lower laminar flow space; The volute is provided with a first air outlet, which is connected to the upper laminar flow space, and the volute is provided with a second air outlet, which is connected to the lower laminar flow space; the first air outlet and the second air outlet are located on both sides of the axial direction of the volute. An impeller assembly includes an upper impeller, a lower impeller, and a partition for separating the upper impeller and the lower impeller. The upper impeller is disposed in the upper laminar flow space, and the lower impeller is disposed in the lower laminar flow space. The blades of the upper impeller and the lower impeller are backward-curved blades. A drive mechanism drives the impeller assembly to rotate.
2. The double-layer flow blower according to claim 1, characterized in that, The first air outlet and the second air outlet are located on opposite sides of the volute axially symmetrical.
3. The double-layer flow blower according to claim 1, characterized in that, The volute includes an upper volute, a lower volute, and a partition plate. The partition plate is located between the upper volute and the lower volute. The partition plate and the upper volute together form the upper laminar flow space, and the partition plate and the lower volute together form the lower laminar flow space.
4. The double-layer flow blower according to claim 3, characterized in that, The upper volute is provided with the first air outlet, and the angle formed by the lines connecting the inner side of the first air outlet and the outer side of the first air outlet to the center of the upper volute is θ1, which satisfies: 70°≤θ1≤180°.
5. The double-layer flow blower according to claim 3, characterized in that, The lower volute is provided with a second air outlet. The angle formed by the lines connecting the inner side of the second air outlet and the outer side of the second air outlet to the center of the lower volute is θ2, which satisfies: 70°≤θ2≤180°.
6. The double-layer flow blower according to claim 1, characterized in that, The upper impeller includes a first hub flange and a plurality of first blades arranged circumferentially along the first hub flange; the lower impeller includes a second hub flange and a plurality of second blades arranged circumferentially along the second hub flange.
7. The double-layer flow blower according to claim 3, characterized in that, The upper volute is provided with a first air inlet, a first air outlet duct, and a first air outlet, with the two ends of the first air outlet duct connected to the first air inlet and the first air outlet, respectively; the lower volute is provided with a second air inlet, a second air outlet duct, and a second air outlet, with the two ends of the second air outlet duct connected to the second air inlet and the second air outlet, respectively.
8. The double-layer flow blower according to claim 1, characterized in that, The drive mechanism includes a rotating shaft fixedly connected to the impeller and a drive motor for driving the rotating shaft to rotate. The drive motor is located on the outside of the volute.
9. A vehicle-mounted air conditioning unit, characterized in that, Includes a double-layer flow blower as described in any one of claims 1 to 8 and an indoor heat exchanger disposed on the air outlet side of the double-layer flow blower, wherein the axial direction of the double-layer flow blower is the same as the air inlet direction of the heat exchanger.
10. An automotive air conditioner, characterized in that, Including the vehicle air conditioning unit as described in claim 9.