Double-layer flow blower, vehicle-mounted air conditioning box and automobile air conditioner

Abstract

The invention provides a double-layer flow air blower, a vehicle-mounted air conditioning box and an automobile air conditioner. The double-layer-flow blower comprises a volute, a flow guide plate and a flow guide plate, wherein the interior of the volute is divided into an upper-layer-flow space and a lower-layer-flow space; a first air outlet is formed in the volute and communicated with the upper layer flow space, and a second air outlet is formed in the volute and communicated with the lower layer flow space; the first air outlet and the second air outlet are formed in the two axial sides of the volute. The impeller assembly comprises an upper impeller, a lower impeller and a partition plate used for separating the upper impeller from the lower impeller, and blades of the upper impeller and blades of the lower impeller are backward-inclined blades; and the driving mechanism drives the impeller assembly to rotate. The impeller assembly is arranged to be the backward inclined blades, and the air outlet direction of the volute can be set to be air outlet in the axial direction of the volute; therefore, when the air conditioning box is arranged, the axial direction of the air blower is consistent with the air inlet direction of the indoor heat exchanger, and the overall size of the air conditioning box is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning, and in particular to a double laminar flow blower, a vehicle air conditioning box and a vehicle air conditioner. Background Art

[0002] The vehicle air conditioning box is one of the core components of the vehicle air conditioning system, responsible for regulating the temperature, humidity and air circulation in the vehicle. Figure 1 As shown, the automobile air conditioning box includes a blower 100' for introducing air and an indoor heat exchanger 200' for exchanging heat with the introduced air. At present, the blower 100' mostly adopts a double-layer flow blower, which can realize double-layer airflow with different flow directions, flow rates and temperatures, and then accurately deliver air to different areas in the car. For example, the driver and passenger areas in the front row can independently adjust the temperature and wind speed according to their respective needs to improve individual comfort. Please continue to read Figure 1 In the prior art double-layer flow blower, 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), and the axial direction of the blower 100' (the direction shown by the dotted vertical line) and the air inlet direction of the cold source 210' in the indoor heat exchanger 200' (the direction shown by the arrow) are arranged at a large angle (generally close to a 90° angle). 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' causes the occupied space of the air conditioner to be relatively large. Affected by the air outlet direction of the blower 100', the axial direction of the blower 100' cannot be consistent with the air inlet direction of the cold source 210', so the overall volume of the air conditioner is difficult to be miniaturized.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the 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 the present invention is to provide a double laminar flow blower, a vehicle air conditioning box and a vehicle air conditioner, so that the air outlet direction of the double laminar flow blower is in the same direction as its axial direction, thereby reducing the layout area of ​​the air conditioning box.

[0005] An embodiment of the present invention provides a double laminar flow blower, comprising:

[0006] A volute, wherein the interior of the volute 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 arranged on both axial sides of the volute;

[0007] An impeller assembly, comprising an upper impeller, a lower impeller and a partition plate for separating the upper impeller and the lower impeller, wherein the upper impeller is arranged in the upper laminar flow space, the lower impeller is arranged in the lower laminar flow space, and the blades of the upper impeller and the lower impeller are backward inclined blades;

[0008] A driving mechanism drives the impeller assembly to rotate.

[0009] In some embodiments, the first air outlet and the second air outlet are located on two axially symmetrical sides 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, 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.

[0011] In some embodiments, the upper volute is provided with the first air outlet, and the angle formed by the line 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 the second air outlet, and the angle formed by the line 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 rim and a plurality of first blades arranged circumferentially along the first hub rim; the lower impeller includes a second hub rim and a plurality of second blades arranged circumferentially along the second hub rim.

[0014] In some embodiments, the upper volute is provided with a first air inlet, a first air outlet duct and a first air outlet, and the two ends of the first air outlet duct are respectively connected to the first air inlet and the first air outlet; the lower volute is provided with a second air inlet, a second air outlet duct and a second air outlet, and the two ends of the second air outlet duct are respectively connected to the second air inlet and the second air outlet.

[0015] In some embodiments, the driving mechanism includes a rotating shaft fixedly connected to the impeller and a driving motor driving the rotating shaft to rotate, and the driving motor is arranged on the outside of the volute.

[0016] An embodiment of the present invention also provides a vehicle air conditioning box, comprising the double laminar flow blower as described above and an indoor heat exchanger arranged on the air outlet side of the double laminar flow blower, wherein the axial direction of the double laminar flow blower is the same as the air inlet direction of the heat exchanger.

[0017] An embodiment of the present invention further provides an automobile air conditioner, comprising the vehicle air conditioning box as described above.

[0018] The double laminar flow blower, vehicle air conditioning box and automobile air conditioner provided by the present invention have the following advantages:

[0019] The backward-inclined blades have the characteristics of dispersing the air output of the fan, low wind speed, and easy turning. Therefore, by setting the impeller assembly to backward-inclined blades, the air outlet direction of the volute can be set to be along its axial direction; and then when arranging the air-conditioning box, the blower can be arranged in an axial direction consistent with the air inlet direction of the indoor heat exchanger, thereby saving the space occupied by the blower, making the structure of the air-conditioning box compact, and reducing the overall volume of the air-conditioning box; by arranging the first air outlet and the second air outlet of the volute on both sides of the volute, it is possible to avoid interference between the air flows of the two air outlets, thereby improving the efficiency of the fan in supplying air to different areas of the passenger cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of an air conditioning box in the prior art;

[0022] Figure 2 is a schematic structural diagram of an air conditioning box according to an embodiment of the present invention;

[0023] Figure 3 yes Figure 2 A schematic cross-sectional view of the blower taken along the section line CC;

[0024] Figure 4 yes Figure 2 Schematic diagram of the cross section of the blower taken along the section line DD.

[0025] Reference numerals:

[0026] 100 Double laminar flow blower 212 first blade

[0027] 10 volute 22 lower impeller

[0028] 11 Upper volute 221 Second hub flange

[0029] 11a First air outlet 222 Second blade

[0030] 11b First air inlet 23 partition

[0031] 12 Lower volute 24 Guide plate

[0032] 12a Second air outlet 30 Driving mechanism

[0033] 12b Second air inlet 200 Indoor heat exchanger

[0034] 21 Upper impeller 210 Cold source

[0035] 211 first wheel hub rim 220 heat source DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0037] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] It should be further understood that the terms "comprises" and "includes" indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, 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" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way.

[0040] To solve the problems in the prior art, an embodiment of the present invention provides a double-laminar flow blower, comprising: a volute, the interior of the volute 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 arranged on both axial sides of the volute; an impeller assembly, comprising an upper impeller, a lower impeller and a partition plate for separating the upper impeller and the lower impeller, the upper impeller is arranged in the upper laminar flow space, the lower impeller is arranged in the lower laminar flow space, and the blades of the upper impeller and the lower impeller are backward-inclined blades; a driving mechanism, driving the impeller assembly to rotate. The backward-inclined blades have the characteristics of dispersing the air output of the fan, low wind speed, and easy turning. In the present technical solution, by setting the impeller assembly as a backward-inclined blade, the air outlet direction of the volute can be set to be along its axial direction; therefore, when arranging the air-conditioning box, the blower can be arranged in an axial direction consistent with the air inlet direction of the indoor heat exchanger, thereby saving the space occupied by the blower, making the structure of the air-conditioning box compact, and reducing the overall volume of the air-conditioning box; by arranging the first air outlet and the second air outlet of the volute on both sides of the volute, it is possible to avoid interference between the air flows of the two air outlets, thereby improving the efficiency of the fan in supplying air to different areas of the passenger cabin.

[0041] The double laminar flow blower provided by the embodiment of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments shown are not intended to limit the protection scope of the present invention.

[0042] Figure 2 A schematic diagram of a double laminar flow blower provided by an embodiment of the present invention is shown; Figure 3 Shows Figure 2 A schematic cross-sectional view of the blower taken along the section line CC; Figure 4 Shows Figure 2 Schematic diagram of the cross section of the blower along the section line DD. Figures 2 to 4 As shown, the double laminar flow blower 100 includes a volute 10, an impeller assembly and a driving 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 arranged on both sides of the axial direction of the volute 10. The impeller assembly includes an upper impeller 21, a lower impeller 22 and a partition 23 for separating the upper impeller and the lower impeller. The upper impeller 21 is arranged in the upper laminar flow space, and the lower impeller 22 is arranged in the lower laminar flow space. The blades of the upper impeller 21 and the lower impeller 22 are backward inclined blades; the driving mechanism 30 drives the impeller assembly to rotate.

[0043] The backward-inclined blades have the characteristics of dispersing the air output of the fan, low wind speed, and easy turning. Therefore, by setting the impeller assembly to backward-inclined blades, the air outlet direction of the volute can be set to be along its axial direction; and then when arranging the air-conditioning box, the blower can be arranged in an axial direction consistent with the air inlet direction of the indoor heat exchanger, thereby saving the space occupied by the blower, making the structure of the air-conditioning box compact, and reducing the overall volume of the air-conditioning box; by arranging the first air outlet and the second air outlet of the volute on both sides of the volute, it is possible to avoid interference between the air flows of the two air outlets, thereby improving the efficiency of the fan in supplying air to different areas of the passenger cabin.

[0044] Further, in some embodiments, the first air outlet 11a and the second air outlet 12a are arranged on two sides symmetrical to the axial direction of the volute 10. That is, the first air outlet 11a is arranged on the first side of the volute 10, and the second air outlet 12a is arranged on the second side of the volute 10, and the first side and the second side are symmetrical along the axial direction of the volute. The positions of the first air outlet 11a and the second air outlet 12a are arranged in this way, which can reduce the difficulty of preparing the volute 10.

[0045] Furthermore, if Figure 3 and Figure 4 As shown, in this embodiment, the volute 10 includes an upper volute 11, a lower volute 12 and a partition plate (not shown in the figure), the partition plate is located between the upper volute 11 and the lower volute 12, the partition plate and the upper volute 11 are combined to form an upper laminar flow space, and the partition plate and the lower volute 12 are combined to form a lower laminar flow space. The upper laminar flow space and the lower laminar flow space are not connected, so that when the upper impeller 21 and the lower impeller 22 are running, there will be no mutual interference.

[0046] 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 the outer diameter of the lower volute 12, or the outer diameter of the upper volute 11 can be smaller than the outer diameter 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 proportional requirements of the output air volume of the upper and lower laminar flow spaces, and no specific limitation is made here.

[0047] Furthermore, if Figure 2 and Figure 3 As shown, in some embodiments, the upper volute 11 is provided with a first air outlet 11a, and the angle formed by the line connecting the inner side of the first air outlet 11a and the outer side of the first air outlet 11a to the center of the upper volute 11 is θ1, which satisfies: 70°≤θ1≤180°. The angle θ1 affects the air volume of the air outlet of the upper volute 11, and by reasonably setting the angle θ1, the air volume of the upper volute 11 meets the demand.

[0048] Furthermore, if Figure 2 and Figure 4As shown, in some embodiments, the lower volute 12 is provided with a second air outlet 12a, and the angle formed by the inner side of the second air outlet 12a and the line connecting the outer side of the second air outlet 12a to the center of the lower volute 12 is θ2, which satisfies: 70°≤θ2≤180°. The angle θ2 affects the air volume of the air outlet of the lower volute 12, and by setting a reasonable angle θ2, the air volume of the lower volute meets the demand.

[0049] Furthermore, in some embodiments, Figures 2 to 4 As shown, the upper volute 11 is also provided with a first air inlet 11b and a first air outlet duct, and the two ends of the first air outlet duct are respectively connected to the first air inlet 11b and the first air outlet 11a; the lower volute 12 is also provided with a second air inlet 12b and a second air outlet duct, and the two ends of the second air outlet duct are respectively connected to the second air inlet 12b and the second air outlet 12a. The first air inlet 11b can be connected to one of the external fresh air or the internal circulating air, and the second air inlet 12b can be connected to the other of the external fresh air or the internal circulating air, so that the upper impeller 21 and the lower impeller 22 can accurately deliver the circulating air entering from different channels to different areas of the passenger compartment, thereby reducing energy consumption.

[0050] Furthermore, in some embodiments, Figure 3 and Figure 4 As shown, the upper impeller 21 includes a first hub edge 211 and a plurality of first blades 212 arranged circumferentially along the first hub edge 211; the lower impeller 22 includes a second hub edge 221 and a plurality of second blades 222 arranged circumferentially along the second hub edge 221. However, the structures of the upper impeller 21 and the lower impeller 22 are not limited to the structures shown in the drawings, and can also be impeller structures in other prior arts. Both the first blade 212 and the second blade 222 are backward-inclined blades, and the bending direction of the backward-inclined blade is opposite to the direction of rotation of the airflow. After the airflow enters the blade, it flows along the bending direction of the trailing edge of the blade. The blades of the impeller are set as backward-inclined blades, which can reduce the turbulence generated when the impeller is running, make the airflow flow smooth, stabilize the airflow, and reduce the operating noise.

[0051] It should be noted that the height, diameter and number of blades of the upper impeller 21 and the lower impeller 22 may be the same or different, and may be specifically set according to actual air output requirements, which are not specifically limited here.

[0052] Furthermore, if Figure 2 As shown, the impeller assembly also includes a guide plate 24 for guiding air, which is arranged on the inner side of the lower impeller 22. The guide plate 24 is coaxially arranged with the partition plate 23. Specifically, the outer wall of the guide plate 24 is arranged as a curved surface structure, so that the internal circulating air flows smoothly between the guide plate 24 and the partition plate 23 without generating turbulence.

[0053] Furthermore, in some embodiments, the driving mechanism 30 includes a rotating shaft fixedly connected to the impeller assembly and a driving motor driving the rotating shaft to rotate, and the driving motor is disposed on the outside of the volute 10 .

[0054] Please continue reading Figure 2 The embodiment of the present invention further provides a vehicle air conditioner, comprising the double laminar flow blower 100 as described above and an indoor heat exchanger 200 arranged on the air outlet side of the double laminar flow blower 100, wherein the axial direction of the double laminar 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 comprises a cold source 210 and a heat source 220. Since the double laminar flow blower 100 discharges air along its axial direction, the axial direction of the double laminar 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 conditioner, making the structure of the vehicle air conditioner compact, and reducing the volume of the vehicle air conditioner.

[0055] The embodiment of the present invention further provides an automobile air conditioner, comprising the above-mentioned vehicle air conditioner box. The automobile air conditioner can achieve all the technical effects of the above-mentioned vehicle air conditioner box, which will not be described in detail here.

[0056] In summary, the double laminar flow blower, vehicle air conditioning box and automobile air conditioner provided by the present invention have the following advantages:

[0057] The backward-inclined blades have the characteristics of dispersing the air output of the fan, low wind speed, and easy turning. Therefore, by setting the impeller assembly to backward-inclined blades, the air outlet direction of the volute can be set to be along its axial direction; and then when arranging the air-conditioning box, the blower can be arranged in an axial direction consistent with the air inlet direction of the indoor heat exchanger, thereby saving the space occupied by the blower, making the structure of the air-conditioning box compact, and reducing the overall volume of the air-conditioning box; by arranging the first air outlet and the second air outlet of the volute on both sides of the volute, it is possible to avoid interference between the air flows of the two air outlets, thereby improving the efficiency of the fan in supplying air to different areas of the passenger cabin.

[0058] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A double laminar flow blower, characterized in that: include: A volute, wherein the interior of the volute 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 arranged on both axial sides of the volute; An impeller assembly, comprising an upper impeller, a lower impeller and a partition plate for separating the upper impeller and the lower impeller, wherein the upper impeller is arranged in the upper laminar flow space, the lower impeller is arranged in the lower laminar flow space, and the blades of the upper impeller and the lower impeller are backward inclined blades; A driving mechanism drives the impeller assembly to rotate.

2. The double laminar flow blower according to claim 1, characterized in that: The first air outlet and the second air outlet are arranged on two axially symmetrical sides of the volute.

3. The double laminar flow blower according to claim 1, characterized in that: The volute includes an upper volute, a lower volute and a partition plate, wherein 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 laminar flow blower according to claim 3, characterized in that: The upper volute is provided with the first air outlet, and an angle formed by a line 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 laminar flow blower according to claim 3, characterized in that: The lower volute is provided with the second air outlet, and the angle formed by the line 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 laminar flow blower according to claim 1, characterized in that: The upper impeller includes a first hub rim and a plurality of first blades arranged circumferentially along the first hub rim; the lower impeller includes a second hub rim and a plurality of second blades arranged circumferentially along the second hub rim.

7. The double laminar 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 the first air outlet, and the two ends of the first air outlet duct are respectively connected to the first air inlet and the first air outlet; the lower volute is provided with a second air inlet, a second air outlet duct and a second air outlet, and the two ends of the second air outlet duct are respectively connected to the second air inlet and the second air outlet.

8. The double laminar flow blower according to claim 1, characterized in that: The driving mechanism comprises a rotating shaft fixedly connected to the impeller and a driving motor driving the rotating shaft to rotate, and the driving motor is arranged on the outer side of the volute.

9. A vehicle air conditioning box, characterized in that: It comprises a double laminar flow blower as described in any one of claims 1 to 8 and an indoor heat exchanger arranged on the air outlet side of the double laminar flow blower, and the axial direction of the double laminar flow blower is the same as the air inlet direction of the heat exchanger.

10. An automobile air conditioner, characterized in that: It includes the vehicle air conditioning box as described in claim 9.

Images