Air conditioning device
By placing the filter on the downstream side of the fan in the air conditioning unit and utilizing the axial space of the motor, and by using a brushed motor, the problem of high cost of brushless motors is solved, and the miniaturization and high-efficiency filtration of the air conditioning unit are achieved.
Patent Information
- Application Number
- CN202520157188.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The use of brushless motors in existing air conditioning units results in high costs, while replacing them with larger brushed motors would increase the size of the unit and affect its compatibility.
In the air conditioning unit, the filter is placed on the downstream side of the fan, and at least part of the filter is located upstream of the end of the motor on the downstream side in the airflow direction. The filter is installed using the axial space of the motor, and a brushed motor is used to reduce costs while keeping the unit miniaturized.
While reducing costs by using brushed motors, the system also saves internal space, ensures filtration efficiency, and prevents corrosion or contamination of the evaporator and heater core through reasonable filter layout, thus achieving miniaturization of the air conditioning unit.
Smart Images
Figure CN223778140U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to an air conditioning device, and more particularly to an air conditioning device for a vehicle. Background Technology
[0002] It is known that there are such Figure 5 The air conditioning unit shown includes a filter 10, a fan 20, a motor 30, an evaporator 40, and a heater core 50. The motor 30 drives the fan 20 to draw in air, which is then blown into the vehicle interior after heat exchange between the evaporator 40 and the heater core 50. In this air conditioning unit, the filter 10, fan 20, motor 30, evaporator 40, and heater core 50 are arranged sequentially in the airflow direction.
[0003] In such air conditioning units, brushless motors are used. Brushless motors are smaller, which reduces the size of the air conditioning unit, but correspondingly, the cost is also higher. If a larger motor, such as a brushed motor, is used to save costs, the larger size of the brushed motor, especially its axial size, necessitates increasing the size of the air conditioning unit to accommodate it, in order to avoid interference between the motor and components such as the heater core downstream of the airflow direction. This further necessitates changes to the layout of the engine compartment where the air conditioning unit is located, resulting in poor installation compatibility. Utility Model Content
[0004] This disclosure is made in view of the above-mentioned problems, and its purpose is to provide an air conditioning device that can maintain a small size.
[0005] To achieve the above objectives, the air conditioning device of this application includes: a fan that blows air entering the air conditioning device toward the outlet of the air conditioning device; a motor connected to the fan on the downstream side of the fan in the airflow direction and driving the fan to rotate; and a filter that filters impurities in the air entering the air conditioning device, the filter being disposed on the downstream side of the fan in the airflow direction, and at least a portion of the filter being located on the upstream side of the airflow direction compared to the downstream end of the motor in the airflow direction.
[0006] With this structure, the filter is positioned downstream of the fan in the direction of airflow, and at least a portion of the filter does not extend beyond the end of the motor in the direction of airflow. That is, in the direction of airflow, a portion of the filter overlaps with the motor, thus saving internal space of the air conditioning unit and making the overall air conditioning unit smaller.
[0007] In one possible embodiment, in the airflow direction, the downstream end of the motor is located downstream of the downstream end of the fan in the airflow direction, and the filter is disposed at any position in the circumferential direction of the motor shaft.
[0008] Based on this structure, when the axial dimension of the motor is large, the circumferential space of the motor shaft can be utilized to the maximum extent, thereby achieving miniaturization of the air conditioning unit.
[0009] In one possible embodiment, in the airflow direction, the distance from the downstream end of the fan in the airflow direction to the downstream end of the filter in the airflow direction is defined as H1, and the distance from the downstream end of the fan in the airflow direction to the downstream end of the motor in the airflow direction is defined as H2, then H1 < H2.
[0010] With this structure, it can be ensured that the entire filter does not exceed the downstream end of the motor's airflow direction, which can save the internal space occupied by the air conditioning unit and further realize the miniaturization of the air conditioning unit.
[0011] In one possible embodiment, the air conditioning device according to this application further includes an evaporator disposed downstream of the filter and downstream of the motor in the airflow direction.
[0012] With this structure, impurities in the air can be filtered out, preventing the evaporator from being corroded or contaminated.
[0013] In one possible embodiment, the filter is disposed around the motor in the circumferential direction of the motor shaft.
[0014] This structure increases the filtration area, thereby increasing the filter's air filtration efficiency.
[0015] In one possible embodiment, the filter includes at least two filter elements, which are respectively disposed on both sides of the motor, at least separated by the motor.
[0016] This structure makes it easier to manufacture filters and to install filters and motors.
[0017] In one possible embodiment, the filter includes four filter components, comprising: two first filter components disposed on either side of the motor in one direction, separated by the motor, and two second filter components disposed between the two first filter components in another direction perpendicular to the motor.
[0018] This structure not only makes it easy to manufacture and install filters, but also increases the filtration area and ensures filtration efficiency.
[0019] In one possible embodiment, the motor is a brushed motor.
[0020] This structure allows for the use of brushed motors instead of brushless motors, significantly reducing costs, while maintaining the miniaturization of the air conditioning unit.
[0021] In one possible embodiment, a portion of the peripheral portion of the filter is fixed to the inside of the housing of the air conditioning unit.
[0022] Based on this structure, the filter can be installed in a simple way.
[0023] In one possible embodiment, the filter is flat and is arranged perpendicular to the axis of the motor.
[0024] This structure simplifies the design and installation of the filter. Attached Figure Description
[0025] Figure 1 This is a schematic diagram showing the overall structure of the air conditioning unit disclosed herein.
[0026] Figure 2 This is a schematic diagram showing the layout of a filter.
[0027] Figure 3 This is a schematic diagram showing another layout of the filter.
[0028] Figure 4 This is a schematic diagram showing other layouts of the filter.
[0029] Figure 5 This is a schematic diagram showing the overall structure of a conventional air conditioning unit.
[0030] Symbol Explanation
[0031] 1. Filter,
[0032] 11 First filter element,
[0033] 12 Second filter component,
[0034] 2 fans,
[0035] 3. Motors
[0036] 4. Evaporator
[0037] 5. Heater core,
[0038] 6. Shell. Detailed Implementation
[0039] Hereinafter, preferred embodiments of the present disclosure will be described with reference to the accompanying drawings. In the following description, the sizes of the components and the positional relationships between them shown in the figures may be adjusted for ease of explanation, and the present disclosure is not limited to the sizes and positional relationships shown in the figures. Furthermore, when terms such as "upper," "lower," "left," "right," "front," and "rear" are used to indicate orientation or positional relationships, they refer to the orientation or positional relationships shown in the accompanying drawings. Therefore, these terms are for illustrative purposes only and do not limit the orientation or positional relationships of the present disclosure in actual use.
[0040] Figure 1 This is a schematic diagram showing the overall structure of an air conditioning unit. For example... Figure 1 As shown, the air conditioning unit includes a housing 6 and, inside the housing 6, a fan 2, a motor 3, an evaporator 4, and a heater core 5 arranged sequentially. The fan 2 is connected to the shaft 3a of the motor 3, thereby enabling the motor 3 to drive the fan 2 to rotate. The fan 2 then directs air entering from outside the housing 6 through the evaporator 4 and / or the heater core 5, as indicated by the arrows in the figure, towards the outlet of the air conditioning unit. Furthermore, the air conditioning unit also includes a filter 1 for filtering impurities from the air entering the unit; this filter 1 will be described in detail later.
[0041] In this embodiment, a brushed motor is used as motor 3. Compared to a brushless motor, a brushed motor has a larger volume, especially in the axial direction. Figure 1 As shown, the motor 3 is connected to the fan 2 on the downstream side of the fan 2 in the airflow direction. In the airflow direction, the distance H2 between the end 2b (hereinafter also referred to as the rear end of the fan 2) on the downstream side of the fan 2 in the airflow direction and the end 3b (hereinafter also referred to as the rear end of the motor 3) on the downstream side of the motor 3 in the airflow direction is relatively long. Even if the evaporator 4 is set close to the rear end of the motor 3, there is still a certain space between the rear end of the fan 2 and the evaporator 4.
[0042] In this disclosure, the space described above is used to install filter 1. Specifically, as follows... Figure 1 As shown, filter 1 is a generally flat plate with a certain thickness along the airflow direction and is arranged perpendicular to the shaft 3a of motor 3. In the airflow direction, when H1 is defined as the distance from the rear end of fan 2 to the downstream end 1b of filter 1 in the airflow direction (i.e., the surface opposite to the surface facing fan 2), H1 < H2. That is, filter 1 is arranged so as not to extend beyond the rear end of motor 3 in the airflow direction. Furthermore, in this embodiment, filter 1 can be arranged at any position circumferentially on the shaft 3a of motor 3 within the range from the rear end of fan 2 to the rear end of motor 3. Several specific arrangement examples of filter 1 will be described in detail below.
[0043] Figure 2 This is a schematic diagram showing the layout of filter 1, viewed from the axial direction of motor 3. (As shown...) Figure 2 As shown, the filter 1 is arranged circumferentially around the motor 3 along the shaft 3a of the motor 3. Specifically, the filter 1 is an integrally formed, generally rectangular plate with an opening 1a in its center. A mounting portion (not shown) is formed on a portion of the periphery of the filter 1, through which the filter 1 is fixed to the inside of the housing 6 of the air conditioning unit. With the filter 1 fixed to the housing 6, the motor 3... Figure 2 Pass through opening 1a as shown.
[0044] Figure 3 This is a schematic diagram showing another layout of filter 1, viewed from the axial direction of motor 3. (As shown) Figure 3 As shown, the filter 1 includes two first filter elements 11 disposed above and below the motor 3. The two first filter elements 11 are respectively fixed to the inner side of the housing of the air conditioning unit by mounting portions (not shown) disposed on a portion of their respective peripheries, and the two first filter elements 11 are respectively configured to have a gap between them and the motor 3.
[0045] Figure 4 This is a schematic diagram showing other layouts of filter 1, viewed from the axial direction of motor 3. For example... Figure 4 As shown, the filter 1 includes two first filter elements 11 disposed above and below the motor 3, and two second filter elements 12 disposed to the left and right sides of the motor 3, respectively, with the two second filter elements 12 sandwiched between the two first filter elements 11. Each second filter element 12 is fixed to the inner side of the air conditioning unit housing 6 by a mounting portion (not shown) provided on a portion of its respective periphery. Each second filter element 12 is configured to have a gap between it and the motor 3.
[0046] The effects of the implementation method will be explained below.
[0047] In this embodiment, a brushed motor is used as motor 3, and filter 1 is placed in the range from the rear end of fan 2 to the rear end of motor 3. Therefore, even if the cost is significantly reduced by using a larger brushed motor instead of a smaller brushless motor, space inside the air conditioning unit can be saved, and the air conditioning unit can be miniaturized, keeping the size of the air conditioning unit roughly the same as in the case of using a brushless motor.
[0048] In this embodiment, the filter 1 is installed at any position in the circumferential direction of the shaft 3a of the motor 3. Therefore, the space in the circumferential direction of the shaft 3a of the motor 3 can be utilized to the maximum extent, thereby realizing the miniaturization of the air conditioning device.
[0049] In this embodiment, by making the distance H1 from the rear end of the fan 2 to the side of the filter 1 opposite to the side facing the fan 2 smaller than the distance H2 from the rear end of the fan 2 to the rear end of the motor 3, it can be ensured that the entire filter 1 does not exceed the rear end of the motor 3, thereby saving the internal space occupied by the air conditioning unit and further realizing the miniaturization of the air conditioning unit.
[0050] In this embodiment, the evaporator 4 and the heater core 5 are arranged downstream of the filter 1 and downstream of the motor 3 along the airflow direction. Therefore, impurities in the air can be filtered out by the filter 1, preventing the evaporator 4 and the heater core 5 from being corroded or contaminated.
[0051] In this embodiment, by setting filter 1 to Figure 2 The integrated component surrounding the motor 3, as shown, increases the filter area, thereby increasing the air filtration efficiency of the filter 1. Furthermore, by setting the filter 1 as... Figure 3 or Figure 4 The separate components shown make it easier to manufacture filter 1 and easier to install filter 1 and motor 3.
[0052] Other embodiments of this disclosure will now be described.
[0053] In the above embodiment, the filter 1 is arranged perpendicularly to the shaft 3a of the motor 3, and in the airflow direction, it does not extend beyond the rear end of the motor 3, but is not limited thereto. For example, the filter 1 may also be arranged obliquely relative to the shaft 3a of the motor 3, depending on the arrangement and shape of other components in the air conditioning unit. In this case, the filter 1 may partially extend beyond the rear end of the motor 3, that is, H1 ≥ H2 is also possible. As long as at least a part of the filter 1 is located upstream of the rear end of the motor 3 in the airflow direction, the space occupied inside the air conditioning unit can be reduced, and the overall miniaturization of the air conditioning unit can be achieved.
[0054] In the above embodiments, a brushed motor was described as the motor 3, but the invention is not limited thereto. For example, when a brushless motor is used, as long as the downstream end 3b of the motor 3 in the airflow direction is located downstream of the downstream end 2b of the fan 2 in the airflow direction, the filter 1 can be installed using the space between the end 2b of the fan 2 and the end 3b of the motor 3. Furthermore, as long as there is space in the circumferential direction of the shaft 3a of the motor 3 within the range from the portion 3c of the motor 3 near the fan 2 to the end 3b of the motor 3 in the airflow direction, the filter 1 can be installed using this space. Therefore, this disclosure can be applied even if other types of motors are used instead of a brushed motor.
[0055] Furthermore, if the length of the rear end of the motor 3 extending downstream of the rear end of the fan 2 is relatively short in the airflow direction, the filter 1 does not need to be flat. Instead, it can be shaped to fit the shape of the side of the fan 2 facing the rear end of the motor 3, such as bending. In this case, the filter 1 can be installed using the circumferential space of the motor 3's shaft 3a. Alternatively, the filter 1 can be fixed to the housing of the motor 3.
[0056] In the above embodiment, a portion of the peripheral portion of the filter 1 is fixed to the inner side of the air conditioning unit housing, and a gap is left between the filter 1 and the motor 3, but this is not a limitation. The filter 1 may simultaneously abut against the inner side of the air conditioning unit housing and the outer casing of the motor 3, and be partially fixed to the outer casing of the motor 3. Alternatively, the filter 1 may be fixed only to the outer casing of the motor 3.
[0057] In the above Figure 3 In the embodiment, the arrangement of the first filter element 11 above and below the motor 3 is described. Figure 4 In the embodiment described, two first filter elements 11 are arranged above and below the motor 3, and two second filter elements 12 are arranged on the left and right sides of the motor 3, sandwiched between the two first filter elements 11. However, this is not a limitation. As described above, the filter 1 can be arranged at any position in the circumferential direction of the shaft 3a of the motor 3. The first filter elements 11 and the second filter elements 12 are not limited to the positions shown in the figure, and can be arranged in other circumferential positions. For example, they can be arranged such that the two first filter elements 11 are arranged on the left and right sides of the motor 3, and the two second filter elements 12 are arranged above and below the motor 3, sandwiched between the two first filter elements 11. The size, number, and position of the filter 1 can be changed according to the shape of the air conditioning unit housing.
[0058] In the above embodiment, the evaporator 4 is disposed downstream of the filter 1 and downstream of the motor 3 in the airflow direction, but it is not limited to this. The evaporator 4 may also be disposed upstream of the filter 1 in the airflow direction.
[0059] This application is not limited to the specific examples described above. Examples in which those skilled in the art have made appropriate modifications to the specific examples described above, as long as they possess the features of this application, are included within the scope of this application. The elements, their configurations, conditions, shapes, etc., of the various specific examples described above are not limited to the illustrated content and can be appropriately modified. The elements of the various specific examples described above can be appropriately combined as long as they do not create technical contradictions.
Claims
1. An air conditioning device, characterized in that, Include: A fan that blows air entering the air conditioning unit toward the outlet of the air conditioning unit; An electric motor is connected to the fan on the downstream side of the airflow direction of the fan and drives the fan to rotate; as well as A filter that filters out impurities from the air entering the air conditioning unit. The filter is disposed downstream of the fan in the airflow direction, and at least a portion of the filter is located upstream of the motor in the airflow direction compared to the downstream end of the motor in the airflow direction.
2. The air conditioning device according to claim 1, characterized in that, In the airflow direction, the downstream end of the motor in the airflow direction is located downstream of the downstream end of the fan in the airflow direction. The filter is located at any position circumferentially on the shaft of the motor.
3. The air conditioning device according to claim 2, characterized in that, In the airflow direction, the distance from the downstream end of the fan in the airflow direction to the downstream end of the filter in the airflow direction is defined as H1. Let H2 be the distance from the downstream end of the fan in the airflow direction to the downstream end of the motor in the airflow direction. H1 < H2.
4. The air conditioning device according to claim 1, characterized in that, It also includes an evaporator disposed downstream of the filter and downstream of the motor in the direction of airflow.
5. The air conditioning device according to claim 2, characterized in that, The filter is disposed around the motor in the circumferential direction of the motor shaft.
6. The air conditioning device according to claim 2, characterized in that, The filter comprises at least two filter elements. The filter components are respectively disposed on both sides of the motor, at least separated by the motor.
7. The air conditioning device according to claim 6, characterized in that, The filter comprises four filter components. The four filter components include: two first filter components disposed on both sides of the motor in one direction, separated by the motor, and two second filter components disposed between the two first filter components in another direction perpendicular to the motor.
8. The air conditioning device according to any one of claims 1 to 7, characterized in that, The motor is a brushed motor.
9. The air conditioning device according to any one of claims 1 to 7, characterized in that, A portion of the peripheral portion of the filter is fixed to the inside of the housing of the air conditioning unit.
10. The air conditioning device according to any one of claims 1 to 7, characterized in that, The filter is flat and is positioned perpendicular to the axis of the motor.