A blower structure for automobile air conditioning system

Abstract

The present invention relates to the technical field of automobile air conditioning, and discloses a blower structure for an automobile air conditioning system, wherein an air cavity is provided inside a shell, an air inlet communicating with the air cavity is provided on one side of the shell, an air outlet communicating with the air cavity is provided on an outer ring of the shell, a mounting plate is fixedly installed on the other side of the shell, a motor is fixedly installed on the outer side of the mounting plate, a hub is fixedly connected to the output end of the motor, blades are evenly fixedly installed in an annular shape on the top outer ring position of the hub, a wheel cover is fixedly installed on the top of the blades, the hub, the wheel cover and the blades constitute an impeller structure, and an air guide device is provided inside the impeller structure, by providing the air guide device inside the blower and cooperating with a circuit control system, the blowing effect and service life of the blower blades are improved, and the noise generated by the impeller during operation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air conditioning, in particular to a blower structure for an automobile air conditioning system. Background Art

[0002] Nowadays, in pursuit of driving comfort, car air conditioning has become an indispensable part, and the car air conditioning system is mainly composed of refrigeration system, heating system, ventilation structure and air purification device. The ventilation adopts the blower, which mainly blows the cold air on the air conditioning evaporator or the hot air in the warm water tank into the car. The structure is mainly composed of impeller, motor and volute, etc. When working, the motor is used to drive the impeller to rotate to realize air circulation. However, it still has certain shortcomings:

[0003] When the blower is in use, the impeller rotates, air is taken in through the middle, and then thrown out to the surroundings, and under the restriction of the volute, the air transmission effect can be achieved along the inside of the chamber. However, the blower draws air to the middle through the impeller and then blows it out from the surroundings. At the same time, the air inlet of the blower is also set in the middle of the impeller axis. In this way, when the impeller rotates quickly, the wind entering from the air inlet will be directly thrown out by the impeller, and then the air volume at the end close to the air inlet on the entire impeller axis is large, while the air volume at the other end is small, resulting in uneven air discharge of the impeller, which affects its service life on the one hand and may cause the impeller to vibrate on the other hand, causing the blower to emit a large noise; at the same time, when the blower is in use, its blades are bent to a certain extent, which can effectively throw the wind in the middle to the surroundings, but the air inside the blower cannot always be clean due to the circulation effect. Therefore, when the blower is working, dust and impurities will adhere to the blades of the impeller, which will not only affect the blowing effect over time, but also cause a lot of noise, affecting the normal use of the air conditioning system. Summary of the invention

[0004] In view of the deficiencies of the above-mentioned background technology, the present invention provides a blower structure for an automobile air-conditioning system, which has the advantages of long service life and high blowing efficiency, and solves the problems raised by the background technology.

[0005] The present invention provides the following technical solution: a blower structure for an automobile air-conditioning system, comprising a shell, an air cavity is opened inside the shell, an air inlet connected to the air cavity is opened on one side of the shell, an air outlet connected to the air cavity is opened on the outer ring of the shell, a mounting plate is fixedly installed on the other side of the shell, a motor is fixedly installed on the outer side of the mounting plate, a hub is fixedly connected to the output end of the motor, blades are evenly fixedly installed in an annular shape on the top outer ring position of the hub, a wheel cover is fixedly installed on the top of the blades, the hub, the wheel cover and the blades constitute an impeller structure and an air guide device is arranged inside the impeller structure.

[0006] Preferably, groove blocks are evenly installed on the top of the hub at the inner circle of the blades, and the adjacent groove blocks are in the shape of annular grooves, a rotating wheel rod is movably installed in the middle of the adjacent annular grooves of the groove blocks, a vertical rod is fixedly installed in the middle of the top surface of the hub, a slip ring is movably sleeved on the outer ring of the vertical rod, the bottom of the slip ring is located at the outer ring of the vertical rod and is movably sleeved on the first return spring, a slide groove is opened inside the vertical rod, a Hall element is movably sleeved inside the slide groove, and a magnetic ring is fixedly installed in the middle of the slip ring.

[0007] Preferably, the Hall element slides up and down inside the slide groove under the magnetic force of the magnetic ring, the inner wall of the slide groove is provided with a resistor which is in electrical contact with the Hall element and is connected to a control system, the control system controls the resistance of the wheel rod when it rotates, and when the Hall element slides to the end closest to the hub, the rotation resistance of the wheel rod controlled by the system is minimal.

[0008] Preferably, a conical head is fixedly installed on the top wall of the wind cavity at the bottom of the air inlet, two sliding sleeves are slidably sleeved on the outer ring of the blade, and electromagnets are evenly fixedly installed in a ring shape inside the hub and the wheel cover at the end of the blade, and a connecting disk is fixedly installed on the output end of the motor, and a screw is evenly threadedly sleeved on the connecting disk and the bottom of the hub, and the middle part of the hub is a truncated cone-shaped protrusion, and the protrusion height and bevel angle are the same as those of the conical head.

[0009] Preferably, a pressure groove is opened on the middle top surface of the wheel hub, a pressure head is movably sleeved inside the pressure groove, a second return spring is fixedly connected between the bottom of the pressure head and the bottom wall of the pressure groove, a resistance bar is fixedly installed on the inner wall of the pressure groove, and a sliding vane ring that is in sliding contact with the resistance bar is fixedly installed on the outer ring of the pressure head.

[0010] Preferably, there is a magnetic attraction between the two sleeves on the blade, and the electromagnets in the hub and the wheel cover apply magnetic attraction to the two corresponding sleeves after being energized, and the magnetic attraction between the sleeves by the electromagnet is greater than the magnetic attraction between the two sleeves.

[0011] Preferably, there are two resistor bars and they are in series connection with the vane ring. The circuit formed by the resistor bars and the vane ring is connected to the control system and controls the current passing through the electromagnet. The more the pressure head contracts into the pressure groove, the greater the current passing through the electromagnet.

[0012] The present invention has the following beneficial effects:

[0013] By arranging an air guide device inside the blower and cooperating with a circuit control system, compared with the prior art, the slot blocks and the rotor rod can effectively ensure that each part of the impeller is uniformly guided, so that the blowing of the blades is uniform, which improves the blowing efficiency and service life. At the same time, the rotation of the rotor rod is controlled by the sliding adjustment of the slip ring and the Hall element, which further limits the uniformity of the blowing during operation, reduces vibration and stabilizes the operation; at the same time, a sliding sleeve is arranged on the outer ring of the blade, and an electromagnet is installed in the hub and the wheel cover to adapt to the work, and at the same time, the restriction of the conical head and the boss in the middle of the hub can ensure the blowing effect, avoid the influence of backflow and large noise at the end of the impeller, and can also adjust the sliding of the sliding sleeve according to the required power. When the sliding sleeve slides, the dust and impurities attached to the surface of the blade can be cleaned. At the same time, adjusting the sliding sleeve according to the wind force is more conducive to the stability of the blade air outlet. Due to the arrangement of the sliding sleeve, the gap between adjacent blades can be adjusted at intervals, which improves the guide effect and reduces the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0016] Figure 3 This is a radial cross-sectional view of the structure of Embodiment 1 of the present invention;

[0017] Figure 4 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0018] Figure 5 This is a schematic diagram of the overall structure of the second embodiment of the present invention;

[0019] Figure 6 This is an axial cross-sectional view of the structure of Embodiment 2 of the present invention;

[0020] Figure 7 This is a schematic diagram of the internal structure of Embodiment 2 of the present invention;

[0021] Figure 8 This is a schematic diagram of the impeller structure of the second embodiment of the present invention;

[0022] Fig. 9 for Figure 6 Enlarged view of point B in the middle;

[0023] Fig.10 for Figure 7 Enlarged view of center C.

[0024] In the figure: 1, shell; 101, air cavity; 2, air inlet; 3, air outlet; 4, mounting plate; 5, wheel hub; 501, pressure groove; 6, wheel cover; 7, blades; 8, groove block; 9, wheel rod; 10, vertical rod; 1001, slide groove; 11, slip ring; 12, first return spring; 13, Hall element; 14, magnetic ring; 15, motor; 16, conical head; 17, sliding sleeve; 18, electromagnet; 19, connecting plate; 20, pressure head; 21, screw; 22, second return spring; 23, resistor bar; 24, vane ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] Please see attached Figure 1 -Attached Figure 4A blower structure for an automobile air conditioning system comprises a shell 1, a shell 1, an air cavity 101 is provided inside the shell 1, an air inlet 2 communicating with the air cavity 101 is provided on one side of the shell 1, an air outlet 3 communicating with the air cavity 101 is provided on the outer ring of the shell 1, a filter layer can be installed at the air outlet 3, so that dust and impurities in the blown air can be filtered out, and it is also convenient for subsequent cleaning, which only needs to be disassembled for cleaning, a mounting plate 4 is fixedly installed on the other side of the shell 1, a motor 15 is fixedly installed on the outer side of the mounting plate 4, a hub 5 is fixedly connected to the output end of the motor 15, and blades 7 are evenly fixedly installed at the top outer ring position of the hub 5 in a ring shape, and the blades 7 A wheel cover 6 is fixedly installed on the top. The wheel hub 5, the wheel cover 6 and the blades 7 constitute an impeller structure and an air guide device is arranged inside the impeller structure. Slot blocks 8 are evenly installed on the top of the wheel hub 5 at the inner circle of the blades 7. The slot blocks 8 are adjacent to each other in the shape of annular grooves. A runner rod 9 is movably installed in the middle of the annular grooves adjacent to the slot blocks 8. The installed runner rod 9 is designed to combine a rotating rod and a rotating wheel. When one end of the runner rod 9 rotates, it will drive the whole rod to rotate. If the air volumes at both ends are different, a rotation difference will occur. However, since it is located on the same runner rod 9, it will produce an adaptive balance, thereby ensuring the same air volume in its axial direction, which is more conducive to the long-term use of the impeller. The middle part of the top surface of the wheel hub 5 is fixedly installed A vertical rod 10 is installed, and a slip ring 11 is movably sleeved on the outer ring of the vertical rod 10. The bottom of the slip ring 11 is located on the outer ring of the vertical rod 10 and is movably sleeved on the first return spring 12. A slide groove 1001 is opened inside the vertical rod 10, and a Hall element 13 is movably sleeved inside the slide groove 1001. A magnetic ring 14 is fixedly installed in the middle of the slip ring 11. First, the installation of the entire blower should make the axial direction of the impeller in a horizontal state, so that when it rotates, the interaction between the internal structures will not be affected by the action of gravity. The Hall element 13 slides up and down inside the slide groove 1001 under the magnetic force of the magnetic ring 14, and the inner wall of the slide groove 1001 is provided with a resistor that is in electrical contact with the Hall element 13. And in the connected control system, the control system controls the resistance of the wheel rod 9 when it rotates. When the Hall element 13 slides to the end closest to the hub 5, the rotation resistance of the wheel rod 9 controlled by the system is the smallest, and it is affected by the incoming wind through the slip ring 11, so that it will slide on the vertical rod 10 and compress the first return spring 12, and then drive the sliding of the Hall element 13 through the magnetic ring 14 to feedback to the control system, so as to limit the rotation of the wheel rod 9, which can play a certain protective role, and at the same time, it also limits multiple wheel rods 9 to avoid a large speed difference when each of them rotates at work, so that they can maintain a certain speed as a whole, which is more conducive to the effect of uniform air outlet.

[0028] Working principle: when working, the motor 15 is started to drive the wheel hub 5 to rotate, and the rotation of the wheel hub 5 will drive the blades 7 and the wheel cover 6 to rotate synchronously, and then the wind is sucked into the wind cavity 101 through the air inlet 2. The wind entering the wind cavity 101 will be blown to the surroundings through the wheel rod 9, and at the same time drive the wheel rod 9 to rotate. The wheel rod 9 is set to have the same length as the blade 7, so that when the entire wheel rod 9 rotates, the ventilation volume of each section is the same, ensuring the uniformity of the wind on the blade 7, and then the wind that passes through the swing of the blade 7 flows along the inner cavity of the wind cavity 101, and finally blows out along the air outlet 3 and finally flows to the air outlet of the air conditioner of the car;

[0029] At the same time, when the incoming wind causes the wheel rod 9 to rotate, the slip ring 11 will slide along the vertical rod 10 due to the action of the wind, and compress the first return spring 12. The slip ring 11 slides and drives the magnetic ring 14 inside it to slide synchronously, which further drives the Hall element 13 to slide inside the slide groove 1001, thereby changing the signal in the control circuit, further controlling the rotation limit of the wheel rod 9, so that it can rotate within a certain speed range, which not only ensures the air intake but also ensures the uniformity of its operation, and is more conducive to the long-term use of the impeller.

[0030] Embodiment 2

[0031] Please see attached Figure 5 -Attached Fig.10, a blower structure for an automobile air conditioning system, a conical head 16 is fixedly installed on the top wall of the air cavity 101 at the bottom of the air inlet 2, two sliding sleeves 17 are slidably sleeved on the outer ring of the blade 7, an electromagnet 18 is evenly fixedly installed in a ring shape at the end of the blade 7 inside the hub 5 and the wheel cover 6, a connecting disk 19 is fixedly installed on the output end of the motor 15, and a screw 21 is evenly threadedly sleeved on the connecting disk 19 and the bottom of the hub 5. The stability of the hub 5 can be enhanced by the cooperation of the connecting disk 19 and the screw 21. The middle part of the hub 5 is truncated in a cone shape, and the height and angle of the protrusion are the same as those of the conical head 16. The design of the conical head 16 and the protrusion in the middle of the hub 5 can effectively guide the wind entering the air cavity 101 through the air inlet 2 to the middle position, and at this time, due to the restrictions of the conical head 16 and the protrusion in the middle of the hub 5, the wind in the middle of the impeller will be relatively large, so that when it is swung around, it can be guaranteed to be sufficient The air circulation caused by the air intake being close to the end of the impeller can be effectively avoided, thereby generating a large noise and affecting the air outlet effect. There is a magnetic attraction between the two sleeves 17 on the blade 7. After the electromagnet 18 in the hub 5 and the wheel cover 6 is energized, the magnetic attraction is applied to the two corresponding sleeves 17 respectively. The magnetic attraction between the sleeves 17 by the electromagnet 18 is greater than the magnetic attraction between the two sleeves 17. The sliding condition of the sleeve 17 on the blade 7 can be attracted by the magnetic force of the electromagnet 18. On the one hand, dust and impurities can be cleaned by driving the sleeve 17 to slide along the blade 7 during work, so that things adsorbed on the surface of the blade 7 can be cleaned. On the other hand, the air outlet of the middle part of the blade 7 can be controlled by the sliding of the sleeve 17. When a large amount of air is required, the sleeve 17 is attracted closer to the end by the electromagnet 18, so that the air outlet in the middle part of the blade 7 is smoother.

[0032] Please see attached Figure 6 -Attached Figure 7 , Attachment Fig. 9 -Attached Fig.10A pressure groove 501 is provided on the top surface of the middle part of the wheel hub 5, a pressure head 20 is movably sleeved inside the pressure groove 501, a second return spring 22 is fixedly connected between the bottom of the pressure head 20 and the bottom wall of the pressure groove 501, a resistor bar 23 is fixedly installed on the inner wall of the pressure groove 501, a vane ring 24 that is in sliding contact with the resistor bar 23 is fixedly installed on the outer ring of the pressure head 20, there are two resistor bars 23 and they are in series connection with the vane ring 24, the circuit formed by the resistor bar 23 and the vane ring 24 is connected to the control system, and The magnitude of the current passing through the electromagnet 18 is controlled. The more the pressure head 20 contracts toward the inside of the pressure groove 501, the greater the current passing through the electromagnet 18. When the air intake is large, the wind force received by the pressure head 20 will increase, thereby compressing it into the pressure groove 501. At the same time, the vane ring 24 is driven to slide along the resistor bar 23 to reduce the resistance in the adjustment circuit, thereby increasing the current in the electromagnet 18. As a result, the electromagnet 18 attracts the sleeve 17 to slide along the blade 7 to the two end positions, which is more conducive to the high-power air output of the blade 7.

[0033] Working principle: during operation, the starting motor 15 drives the wheel hub 5 to rotate through the connecting disk 19, and the rotation of the wheel hub 5 drives the blades 7 and the wheel cover 6 to rotate synchronously, and then the wind is sucked into the wind cavity 101 through the air inlet 2, and at the same time, the circuit of the electromagnet 18 is turned on and a magnetic force is generated at its end, so that the sliding sleeve 17 is attracted to slide along the blade 7 for a short distance in the initial state, and the wind entering the wind cavity 101 will be gathered to the middle of the wind cavity 101 through the guide restriction of the conical head 16, and then under the further restriction of the boss in the middle of the wheel hub 5, the high-pressure wind is thrown out to the surroundings through the middle of the impeller, and then the wind is thrown along the inner cavity of the wind cavity 101 through the blade 7, and finally blown out along the air outlet 3 and finally flows to the air outlet of the air conditioner of the car;

[0034] At the same time, when the air conditioning blowing effect is increased, the amount of air entering the air cavity 101 increases, and the wind force also increases, which will press the pressure head 20 to shrink toward the inside of the pressure groove 501, and then drive the sliding ring 24 to slide along the resistor bar 23 to reduce the resistance in the adjustment circuit, thereby increasing the current in the electromagnet 18, so that the electromagnet 18 attracts the sliding sleeve 17 to slide along the blade 7 to a position closer to the two ends, which is more conducive to the high-power air output of the blade 7. In this way, it can be ensured that the blade 7 can blow more evenly and effectively during operation, thereby increasing the service life.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blower structure for an automobile air conditioning system, comprising a housing (1), characterized in that: The shell (1) has an air cavity (101) formed inside, an air inlet (2) in communication with the air cavity (101) formed on one side of the shell (1), an air outlet (3) in communication with the air cavity (101) formed on the outer ring of the shell (1), a mounting plate (4) fixedly mounted on the other side of the shell (1), a motor (15) fixedly mounted on the outer side of the mounting plate (4), a wheel hub (5) fixedly connected to the output end of the motor (15), a plurality of blades (7) evenly and annularly mounted on the top outer ring of the wheel hub (5), a wheel cover (6) fixedly mounted on the top of the blades (7) The wheel hub (5), the wheel cover (6) and the blades (7) together constitute an impeller structure, and an air guide device extending from the middle to the surroundings is arranged inside the impeller structure to achieve a flow guide effect, the air guide device comprises a groove block (8), the groove block (8) is evenly installed on the top of the wheel hub (5) in an annular shape, the groove block (8) is located at the inner ring of the blade (7), the adjacent sides of the groove block (8) are in an annular groove shape, a rotating wheel rod (9) is movably installed in the middle of the adjacent annular grooves of the groove block (8), a vertical rod (10) is fixedly installed in the middle of the top surface of the wheel hub (5), and the outer ring of the vertical rod (10) is movably sleeved with a slip ring (11 ), the bottom of the slip ring (11) is located on the outer ring of the vertical rod (10) and is movably sleeved with a first return spring (12), the interior of the vertical rod (10) is provided with a slide groove (1001), the interior of the slide groove (1001) is movably sleeved with a Hall element (13), a magnetic ring (14) is fixedly installed in the middle of the slip ring (11), the Hall element (13) slides up and down in the slide groove (1001) under the magnetic force of the magnetic ring (14), the inner wall of the slide groove (1001) is provided with a resistor that is in electrical contact with the Hall element (13) and is connected to a control system, and the control system controls the wheel rod (9) The resistance during rotation is that when the Hall element (13) slides to the end closest to the hub (5), the rotation resistance of the wheel rod (9) caused by the control system is the smallest. When the wind enters and causes the wheel rod (9) to rotate, the slip ring (11) is also affected by the wind and slides along the vertical rod (10), and compresses the first return spring (12). When the slip ring (11) slides, it drives the magnetic ring (14) inside it to slide synchronously, thereby further driving the Hall element (13) to slide inside the slide groove (1001), thereby causing the signal in the control circuit to change, and further controlling the rotation limit of the wheel rod (9).

2. The blower structure for an automobile air conditioning system according to claim 1, characterized in that: The wind guide device comprises a conical head (16), which is fixedly mounted on the top wall of the wind cavity (101) and is located exactly at the bottom of the air inlet (2). The outer ring of the blade (7) is slidably sleeved with two sliding sleeves (17). An electromagnet (18) is evenly fixedly mounted in an annular shape inside the hub (5) and the wheel cover (6) and at the end of the blade (7). A connecting disk (19) is fixedly mounted on the output end of the motor (15). A screw (21) is evenly threadedly sleeved between the connecting disk (19) and the bottom of the hub (5). The middle part of the hub (5) is convex in a truncated cone shape, and the convex height and the inclined angle are the same as those of the conical head (16).

3. The blower structure for an automobile air conditioning system according to claim 2, characterized in that: A pressure groove (501) is provided on the top surface of the middle part of the wheel hub (5), a pressure head (20) is movably sleeved inside the pressure groove (501), a second return spring (22) is fixedly connected between the bottom of the pressure head (20) and the bottom wall of the pressure groove (501), a resistance bar (23) is fixedly installed on the inner wall of the pressure groove (501), and a sliding vane ring (24) that is in sliding contact with the resistance bar (23) is fixedly installed on the outer ring of the pressure head (20).

4. The blower structure for an automobile air conditioning system according to claim 2, characterized in that: There is a magnetic attraction between the two sliding sleeves (17) on the blade (7); the electromagnets (18) in the wheel hub (5) and the wheel cover (6) respectively apply magnetic attraction to the two corresponding sliding sleeves (17) after being energized; the magnetic attraction between the sliding sleeves (17) exerted by the electromagnets (18) is greater than the magnetic attraction between the two sliding sleeves (17).

5. The blower structure for an automobile air conditioning system according to claim 3, characterized in that: There are two resistor bars (23) and they are connected in series with the vane ring (24). The circuit formed by the resistor bars (23) and the vane ring (24) is connected to a control system, and the current of the circuit is the current passing through the electromagnet (18). The longer the pressure head (20) is contracted into the pressure groove (501), the greater the current passing through the electromagnet (18).

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