A fresh air air conditioner

Abstract

This invention discloses a fresh air conditioner. The fresh air conditioner includes an impeller and a motor with an output shaft. A driving component is fixed on the output shaft, and a driven component is fixed on the impeller. The fresh air conditioner further includes: a speed-synchronizing assembly, disposed on the driving component and rotating synchronously with it; the speed-synchronizing assembly includes a first transmission component and a second transmission component; and a drive assembly connected to the speed-synchronizing assembly. The drive assembly drives the speed-synchronizing assembly to move towards the driven component, thereby causing the first and second transmission components to sequentially engage with the driven component. The engagement between the first transmission component and the driven component is a frictional transmission. By ensuring that the driving and driven components reach the same rotational speed before meshing, smooth meshing at the same speed is achieved, avoiding grinding noise during gear meshing, improving user comfort, extending component lifespan, and improving the overall lifespan of the unit.

Description

Technical Field

[0001] This invention relates to the field of fresh air conditioning technology, and more particularly to a fresh air air conditioner. Background Technology

[0002] A fresh air conditioner is a type of air conditioner with a fresh air function, designed for health and comfort. It uses an external circulation device and a filter to purify outdoor air before introducing it into the room, allowing for ventilation even when doors and windows are closed. This achieves air circulation and exchange between indoor and outdoor air, while also purifying the air. Most wall-mounted air conditioners currently have a fresh air function in their indoor units. These units are typically independent modules requiring a separate motor. To increase the fresh air volume, high-power motors are often used, resulting in higher costs for air conditioners with a fresh air function.

[0003] In related technologies, there is a solution that uses one motor to drive two fans simultaneously, that is, one motor drives both the fan of the fresh air module and the fan of the indoor air conditioning unit. However, this has the problem that the fixed plate and the clutch ring are difficult to mesh, which can easily cause teeth to grind and make abnormal noises, damage parts, and reduce service life. Summary of the Invention

[0004] The present invention provides a fresh air conditioner that aims to solve the problem that the fixed plate and clutch ring of existing fresh air conditioners are difficult to engage, which easily leads to grinding and abnormal noise.

[0005] This invention provides a fresh air conditioner, including an impeller and a motor with an output shaft. A driving member is fixed on the output shaft, and a driven member is fixed on the impeller. The fresh air conditioner further includes: a synchronous rotation assembly, disposed on the driving member and rotating synchronously with it; the synchronous rotation assembly includes a first transmission member and a second transmission member; and a drive assembly connected to the synchronous rotation assembly. The drive assembly drives the synchronous rotation assembly to move towards the driven member, thereby causing the first transmission member and the second transmission member to sequentially engage with the driven member for transmission. The engagement transmission between the first transmission member and the driven member is a frictional transmission.

[0006] In the fresh air conditioner provided by the present invention, the first transmission component is a gear ring, the rotation center of the gear ring is provided with a shaft hole, the rotation center of the driven component is provided with an insert portion, and the shaft hole and the insert portion are fitted together to enable frictional transmission between the gear ring and the driven component.

[0007] In the fresh air air conditioner provided by the present invention, the second transmission component is a bushing with internal teeth on its inner side. The bushing is sleeved on the outside of the driving component and the gear ring. The driven component has a ring of external teeth on its circumference and is located on the side of the embedded part away from the gear ring. The internal teeth mesh with the external teeth to enable the bushing to perform gear transmission with the driven component.

[0008] In the fresh air air conditioner provided by the present invention, the same-speed component further includes a locking member. The inner side of the bushing is provided with a groove, and the locking member is embedded in the groove and locked with the bushing. The outer side of the driving member and the gear ring is provided with a sliding groove along its axial direction, and a stop end is provided on the sliding groove located on the outer side of the gear ring. The bushing drives the locking member to slide along the sliding groove and abuts the locking member against the stop end.

[0009] In the fresh air air conditioner provided by the present invention, the same-speed component further includes an elastic element, and the locking element includes a sliding part and a protrusion protruding from the sliding part. The sliding part is disposed in the sliding groove, the protrusion is embedded in the groove, and the elastic element is elastically supported on the side of the protrusion facing away from the groove. The connection between the protrusion and the sliding part is an inclined surface. The bushing is disengaged from the locking element through the cooperation of the inclined surface and the elastic element.

[0010] In the fresh air air conditioner provided by the present invention, the elastic element includes an annular spring, the outer side of the annular spring is connected to the side of the protrusion facing away from the groove, the outer side of the active element is provided with an annular groove, and the annular spring is disposed in the annular groove.

[0011] In the fresh air air conditioner provided by the present invention, there are three locking members and three sliding grooves. The three locking members are evenly distributed at equal intervals along the outer periphery of the annular spring, and the three sliding grooves are evenly distributed at equal intervals along the outer periphery of the driving member and the toothed ring.

[0012] In the fresh air air conditioner provided by the present invention, the driving assembly includes a sleeve and a driving member. The sleeve is provided with a connecting rod, which is connected to the driving member. The outer periphery of the bushing is provided with an annular groove, and the sleeve is sleeved on the annular groove.

[0013] In the fresh air air conditioner provided by the present invention, the driving member, the driven member, the first transmission member and the second transmission member are all provided with teeth, and the teeth are conical.

[0014] The present invention also provides a fresh air air conditioner, wherein the impeller includes a fresh air impeller and a cross-flow impeller, and the motor is a dual-shaft motor, the dual-shaft motor including a first output shaft and a second output shaft; wherein, the driving component on the first output shaft and the driven component on the cross-flow impeller are driven by a same-speed component; the driving component on the second output shaft and the driven component on the fresh air impeller are driven by a same-speed component.

[0015] This invention provides a fresh air conditioner, which includes an impeller, a motor, a speed-synchronizing assembly, and a drive assembly. A driving component is fixed to the output shaft of the motor, and a driven component is fixed to the impeller. The speed-synchronizing assembly includes a first transmission component and a second transmission component. The drive assembly is connected to the speed-synchronizing assembly to drive it to move towards the driven component. During the movement of the speed-synchronizing assembly, the first and second transmission components sequentially cooperate with the driven component. First, the first transmission component and the driven component cooperate through frictional force, enabling the driving component and the driven component to rotate at the same speed. Then, while the driving component and the driven component are rotating at the same speed, the second transmission component cooperates with the driven component to achieve speed-synchronized meshing. This ensures that the driving component and the driven component mesh at the same speed, achieving smooth meshing and avoiding grinding noises during gear meshing. This improves user comfort, extends the service life of components, and ultimately extends the overall lifespan of the unit. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded view of a fresh air conditioner according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the active component of a fresh air air conditioner according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the driven component of a fresh air conditioner according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the bushing of a fresh air air conditioner according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the bushing of a fresh air air conditioner according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the gear ring of a fresh air air conditioner according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the locking component of a fresh air conditioner according to an embodiment of the present invention;

[0024] 1. Motor; 2. Driving component; 21. Slide groove; 22. Annular groove; 31. Locking component; 311. Protrusion; 312. Sliding part; 32. Annular spring; 4. Bushing; 41. Groove; 42. Annular groove; 5. Pulley; 51. Connecting rod; 6. Gear ring; 61. Shaft hole; 62. Slide groove; 7. Driven component; 71. Embedded part; 8. Impeller. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustrating and understanding this invention, and not for limiting it. Furthermore, in the drawings, structures that are similar or identical are indicated by the same reference numerals.

[0027] Please see Figures 1-7 , Figure 1 A fresh air air conditioner is proposed according to an embodiment of the present invention. The fresh air air conditioner includes a fresh air impeller, a cross-flow impeller, and a dual-shaft motor 1. The dual-shaft motor 1 includes a first output shaft and a second output shaft. A first driving member 2 is fixed on the first output shaft, a first driven member 7 is fixed on the cross-flow impeller, a second driving member 2 is fixed on the second output shaft, and a second driven member 7 is fixed on the fresh air impeller.

[0028] To achieve smooth engagement of the first driving member 2 and the first driven member 7 at the same speed, the fresh air air conditioner also includes a first speed-synchronizing component and a first driving component. The first speed-synchronizing component is disposed on the first driving member 2 and rotates synchronously with the first driving member 2. The first speed-synchronizing component includes a first transmission component and a second transmission component. The first driving component is connected to the first speed-synchronizing component. The first driving component is used to drive the first speed-synchronizing component to move toward the first driven member 7 so that the first transmission component and the second transmission component sequentially engage with the first driven member 7 for transmission. The engagement transmission between the first transmission component and the first driven member 7 is a frictional transmission.

[0029] To achieve smooth engagement of the second driving member 2 and the second driven member 7 at the same speed, the fresh air air conditioner also includes a second speed-synchronizing component and a second drive component. The second speed-synchronizing component is disposed on the second driving member 2 and rotates synchronously with the second driving member 2. The second speed-synchronizing component includes a second transmission component and a second transmission component. The second drive component is connected to the second speed-synchronizing component. The second drive component is used to drive the second speed-synchronizing component to move toward the second driven member 7 so that the second transmission component and the second transmission component sequentially engage with the second driven member 7 for transmission. The engagement transmission between the second transmission component and the second driven member 7 is a frictional transmission.

[0030] It should be noted that the second speed-matching component and the second drive component have the same structural and functional principles as the first speed-matching component and the first drive component. For the sake of brevity, the following description will not distinguish between the two but will only describe one set of speed-matching components and drive components. The structure of the other set of speed-matching components can be obtained in the same way and will not be described in detail here.

[0031] The fresh air conditioner of this embodiment includes an impeller 8 and a motor 1 with an output shaft. A driving member 2 is fixed on the output shaft, and a driven member 7 is fixed on the impeller 8. The fresh air conditioner also includes: a synchronous component, which is disposed on the driving member 2 and rotates synchronously with the driving member 2. The synchronous component includes a first transmission member and a second transmission member; and a drive component connected to the synchronous component. The drive component is used to drive the synchronous component to move toward the driven member 7 so that the first transmission member and the second transmission member sequentially cooperate with the driven member 7 for transmission. The cooperation transmission between the first transmission member and the driven member 7 is a frictional transmission.

[0032] Reference Figure 2 The driving component 2 includes a disc and a gear. The gear is located on one side of the disc, and the other side of the disc is fixedly connected to the output shaft of the motor 1. When the output shaft of the motor 1 rotates, it drives the driving component 2 to rotate synchronously. The gear has external teeth on its circumference. The external teeth are conical in shape to facilitate meshing between the teeth, avoid tooth breakage, and thus improve the service life of the parts. Three sliding grooves 21 are provided on the outer circumference of the gear along the axial direction. The three sliding grooves 21 are distributed at equal intervals of 120°. Two annular grooves 22 are also provided on the outer circumference of the gear along the axial direction.

[0033] Reference Figure 3 The driven component 7 includes a large disc, a small disc, and an insert 71. One side of the large disc is fixedly connected to the impeller 8, and the other side of the large disc is the small disc. The outer circumference of the small disc is provided with a ring of external teeth, which are conical in shape to facilitate meshing between the teeth and avoid tooth breakage, thereby improving the service life of the component. The insert 71 is disposed on the surface of the small disc and is a chamfered cone.

[0034] Reference Figure 6The first transmission component is a gear ring 6, which includes a large ring and a small ring. The large ring and the small ring are coaxial, with the small ring located on one side of the large ring. A shaft hole 61 is provided at the rotation center of the large ring and the small ring. The outer circumference of the large ring is provided with a ring of external teeth, and the outer circumference of the small ring is provided with three sliding grooves 62, which are distributed at equal intervals of 120°. The ends of the sliding grooves 62 are closed by the cross-section of the large ring, and the ends of the sliding grooves 62 are the stop ends.

[0035] Reference Figure 1 , Figure 4 and Figure 5 The second transmission component is a bushing 4. The outer circumference of the bushing 4 has an annular groove 42, and a pry bar 5 is fitted onto the annular groove 42. The bushing 4 and the pry bar 5 can rotate relative to each other. Moving the pry bar 5 can cause the bushing 4 to move axially. A connecting rod 51 is provided on the outer side of the pry bar 5, and the connecting rod 51 is connected to a driving component. The driving component moves the pry bar 5 via the connecting rod 51. The driving component can be a drive motor 1 or other driving components. The inner side of the bushing 4 has internal teeth, and the inner side of the bushing 4 also has three grooves 41, which are evenly spaced at 120° intervals.

[0036] Reference Figure 7 The locking element 31 is specifically a locking block, which is trapezoidal in shape. The inner side of the trapezoid is hollowed out, and the two sides of the bottom of the trapezoid extend outward. The elastic element is specifically a ring spring 32. There are two ring springs 32. The ring springs 32 are not closed. The outer peripheries of the two ring springs 32 are connected to the inner side of the top of the trapezoid at intervals. The two sides of the trapezoid are inclined surfaces.

[0037] By implementing this embodiment, the drive component drives the same-speed component to move toward the driven component 7. During the movement of the same-speed component, the first transmission component and the second transmission component cooperate with the driven component 7 in sequence. First, the first transmission component and the driven component 7 cooperate through friction to transmit power, so that the driving component 2 and the driven component 7 achieve rotation at the same speed through the first transmission. Then, when the driving component 2 and the driven component 7 are rotating at the same speed, the second transmission component cooperates with the driven component 7 to achieve meshing at the same speed. In this way, the driving component 2 and the driven component 7 mesh with each other at the same speed, achieving smooth meshing at the same speed, avoiding grinding noise when the teeth mesh, improving the user's comfort experience, and increasing the service life of the parts, thereby improving the service life of the whole machine.

[0038] Reference Figure 3 and Figure 6In one embodiment, the first transmission component is a gear ring 6, with a shaft hole 61 at its center of rotation, and an insert 71 at its center of rotation. The shaft hole 61 and the insert 71 engage to enable frictional transmission between the gear ring 6 and the driven component 7. Specifically, the shaft hole 61 is a circular hole, and the insert 71 is a tapered cone. As the gear ring 6 moves toward the driven component 7, the gap between the shaft hole 61 and the insert 71 gradually decreases, resulting in increasing friction. This friction drives the driven component 7 to rotate until it rotates at the same speed as the driving component 2. It is understood that the insert 71 could also be any other shape with a gradually increasing contact surface with the shaft hole 61. This embodiment achieves frictional transmission between the gear ring 6 and the driven component 7, allowing the driving component 2 and the driven component 7 to reach the same rotational speed through a non-rigid engagement.

[0039] In other embodiments, the engagement between the first transmission member and the driven member 7 can also be magnetic, whereby the first transmission member and the driven member 7 are magnetically attracted and fixed together, causing them to rotate at the same speed. This is another transmission mode that achieves non-rigid engagement transmission.

[0040] Reference Figure 3 and Figure 4 In one embodiment, the second transmission component is a bushing 4. The bushing 4 has internal teeth on its inner side and is sleeved on the outer side of the driving component 2 and the gear ring 6. The driven component 7 has a ring of external teeth on its circumference and is located on the side of the embedded part 71 away from the gear ring 6. The internal teeth mesh with the external teeth to enable gear transmission between the bushing 4 and the driven component 7. Specifically, after the driving component 2 and the driven component 7 reach the same speed through frictional transmission between the gear ring 6 and the driven component 7, the bushing 4 continues to move towards the driven component 7. The internal teeth of the bushing 4 mesh with the external teeth on the driven component 7. Since the driving component 2 and the driven component 7 are already at the same speed under the action of frictional transmission, the driving component 2 and the driven component 7 achieve meshing at the same speed. There is no speed difference between the driving component 2 and the driven component 7, avoiding tooth knocking or slippage and ensuring smooth meshing.

[0041] Reference Figure 1 and Figure 4 In one embodiment, the driving assembly includes a paddle sleeve 5 and a driving member. The paddle sleeve 5 has a connecting rod 51 connected to the driving member. The outer periphery of the bushing 4 has an annular groove 42, and the paddle sleeve 5 is fitted onto the annular groove 42. Specifically, the driving member can drive the connecting rod 51 to move the paddle sleeve 5 axially. Since the paddle sleeve 5 is fitted onto the annular groove 42, when the paddle sleeve 5 moves axially, its axially oriented sidewall abuts against the axially oriented sidewall of the annular groove 42, causing the bushing 4 to move axially. The paddle sleeve 5 can also cause the bushing 4 to move towards or away from the driven member 7.

[0042] Reference Figure 2 and Figure 6 In one embodiment, the synchronous speed assembly further includes a locking member 31. The inner side of the bushing 4 has a groove 41, and the locking member 31 is embedded in the groove 41 to lock the bushing 4. The outer sides of the driving member 2 and the gear ring 6 have axially arranged sliding grooves (62, 21), and a stop end is provided on the sliding groove 62 located on the outer side of the gear ring 6. Specifically, the bushing 4 drives the locking member 31 to slide along the sliding grooves (62, 21) and abuts against the stop end. Since the driving assembly drives the bushing 4 to move, and in order to achieve the movement of the gear ring 6, this embodiment provides a locking member 31, which is fixed to the bushing 4 through the groove 41, so that the locking member 31 and the bushing 4 move synchronously. Furthermore, a groove 62 is provided on the outer side of the gear ring 6, and a stop end is provided on the groove 62. The locking member 31 is placed in the groove (62, 21). When the locking member 31 moves synchronously toward the driven member 7 along with the bushing 4, the locking member 31 abuts against the stop end, thereby pushing the gear ring 6 to move, and thus making the gear ring 6 and the driven member 7 engage in friction transmission.

[0043] Reference Figure 7In this embodiment, to achieve simultaneous engagement between the bushing 4 and the driven member 7, the simultaneous engagement assembly further includes an elastic element. The locking member 31 includes a sliding portion 312 and a protrusion 311 protruding from the sliding portion 312. The sliding portion 312 is disposed in the sliding groove (62, 21), and the protrusion 311 is embedded in the groove. The elastic element is elastically supported on the side of the protrusion 311 facing away from the groove. The connection between the protrusion 311 and the sliding portion 312 is an inclined surface. The bushing 4 is disengaged from the locking member 31 through the cooperation of the inclined surface and the elastic element. In a specific implementation, the elastic element includes a ring spring 32. The outer side of the ring spring 32 is connected to the side of the protrusion 311 facing away from the groove. The outer side of the driving member 2 is provided with an annular groove 22, and the ring spring 32 is disposed in the annular groove 22. Specifically, the locking block pushes the gear ring 6 to move so that the shaft hole 61 of the gear ring 6 is engaged with the insertion part 71 of the driven member 7. The bushing 4 continues to move toward the driven member 7. Since the connection between the protrusion 311 and the sliding part 312 is an inclined surface, the inclined surface is pressed against the groove by force. The locking member 31 compresses the ring spring 32 that supports it. The ring spring 32 is compressed and deformed, and finally the protrusion 311 of the locking member 31 is pressed out of the groove, that is, the bushing 4 and the locking member 31 are disengaged. On the one hand, this allows the bushing 4 to continue moving toward the driven member 7 and meshing with it, passing over the locking member 31, thus achieving synchronous meshing between the driving member 2 and the driven member 7. On the other hand, the bushing 4 is unlocked from the locking member 31, so that the bushing 4 and the locking member 31 no longer move synchronously, the locking member 31 no longer abuts against the stop end, and the friction between the shaft hole 61 of the gear ring 6 and the embedded part 71 of the driven member 7 disappears. This can protect the conical surface of the first synchronous gear ring 6 and the first driven gear, improve the service life of the parts, and thus improve the service life of the whole machine.

[0044] Furthermore, three locking elements 31 and three sliding grooves are provided. The three locking elements 31 are evenly distributed at equal intervals along the outer periphery of the annular spring 32, and the three sliding grooves are evenly distributed at equal intervals along the outer periphery of the driving element 2 and the gear ring 6. Specifically, in this embodiment, the even distribution of spacing is 120° at equal intervals. The multiple locking elements 31 improve the stability of locking and the reliability of transmission.

[0045] In one embodiment, the driving member 2, the driven member 7, the first transmission member, and the second transmission member are all provided with teeth, which are conical in shape. The conical shape of the teeth facilitates meshing between the teeth, avoids tooth breakage, and thus improves the service life of the parts.

[0046] Reference Figure 1To further describe the working principle of the fresh air conditioner in this embodiment, the operation process of the fresh air conditioner will be described below in fresh air mode, air conditioning mode and fresh air-conditioning mode respectively. In order to distinguish the different modes, the two sets of components with the same speed will be distinguished as first and second.

[0047] Air conditioning mode: Motor 1 simultaneously drives the first and second speed-synchronized components to rotate at the same speed, while the first and second speed-synchronized components are in an idling state. When the air conditioning mode is activated, drive motor 1 drives the connecting rod 51 of the first shift sleeve 5 to move to the right. The first shift sleeve 5 drives the first bushing 4 to move to the right, and the first bushing 4 drives the three locking parts 31 to move to the right. The three locking parts 31 push the first gear ring 6 to move to the right. Since the first gear ring 6 and the first driven gear are fitted with a conical surface, the gap will become smaller and smaller as the first gear ring 6 moves to the right, and the friction will become larger and larger. The friction will drive the first driven gear to rotate until it reaches the same speed as the first driving gear. Because the first bushing 4 and the three locking members 31 are engaged at an angle, when the first bushing 4 continues to move to the right, the pressure on the three locking members 31 is greater than the elastic force of the ring spring 32. At this time, the three locking members 31 are pressed down, the first gear ring 6 is no longer compressed, and the first bushing 4 continues to move to the right past the three locking members 31, meshing with the first driven gear, realizing the same rotational speed meshing of the first driving gear and the first driven gear. When the three locking members 31 are pressed down, the first gear ring 6 is no longer compressed, the friction between the first gear ring 6 and the first driven gear disappears, which can protect the conical surface of the first gear ring 6 and the first driven gear, improve the service life of the parts, and thus improve the service life of the whole machine.

[0048] Fresh air mode:

[0049] The motor simultaneously drives the first and second speed-synchronized components to rotate at the same speed, while both components are in an idling state. When the system is switched to fresh air mode, the drive motor moves the connecting rod of the second gear sleeve to the left. The second gear sleeve then moves the second bushing to the left, which in turn moves the three locking elements to the left. These three locking elements push the second gear ring to the left. Because the second gear ring and the second driven gear are fitted with conical surfaces, the gap decreases as the second gear ring moves to the left, increasing friction. This friction drives the second driven gear to rotate until it reaches the same speed as the second driving gear. Because the second bushing and the three locking elements are fitted with inclined surfaces, as the second bushing continues to move to the left, the pressure on the three locking elements exceeds the spring force of the ring spring. At this point, the three locking elements are pressed down, the second gear ring is no longer compressed, and the second bushing passes over the three locking elements to continue moving to the left, engaging with the second driven gear and achieving synchronous meshing between the second driving gear and the second driven gear. When the three locking parts are pressed down, the second gear ring is no longer compressed, and the friction between the second gear ring and the second driven gear disappears, which can protect the conical surfaces of the second gear ring and the second driven gear, improve the service life of the parts, and thus improve the service life of the whole machine.

[0050] Fresh air and air conditioning mode: When both fresh air and air conditioning modes are activated simultaneously, the first switch 5 moves to the right, and the second switch 5 moves to the left. The operating principle is the same as described above and will not be repeated. The first synchronous speed component drives the cross-flow impeller, and the second synchronous speed component drives the fresh air impeller, thus achieving simultaneous activation of the fresh air and air conditioning modes.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A fresh air air conditioner, comprising an impeller and a motor with an output shaft, wherein a driving member is fixedly mounted on the output shaft and a driven member is fixedly mounted on the impeller, characterized in that, The driving component includes a disc and a gear. The gear is located on one side of the disc, and the other side of the disc is fixedly connected to the output shaft of the motor. The gear has external teeth on its circumference, a sliding groove along the axial direction of the gear on its outer circumference, and an annular groove along the circumferential direction of the gear on its outer circumference. The driven component includes a large disc, a small disc, and an insert. One side of the large disc is fixedly connected to the impeller, and the other side of the large disc is the small disc. The small disc has a ring of external teeth on its outer circumference, and the insert is located on the surface of the small disc. The fresh air air conditioner also includes: A synchronous rotation component, mounted on the driving member and rotating synchronously with it, includes a gear ring, a bushing, a locking element, and a ring spring. The gear ring has a shaft hole at its rotation center, a groove along its axial direction on its outer periphery, and a stop end on the groove. The bushing is fitted over the outer sides of the driving member and the gear ring, with internal teeth and a groove on its inner side, and an annular groove on its outer periphery. The locking element includes a sliding portion and a protrusion protruding from the sliding portion. The sliding portion is located within the groove on the outer periphery of the driving member gear and the groove on the outer periphery of the gear ring. The protrusion is embedded in the groove of the bushing and locked to it. The connection between the protrusion and the sliding portion is an inclined surface. The ring spring is located in an annular groove on the outer periphery of the driving member gear, and its outer side is connected to the side of the locking element protrusion facing away from the bushing groove, providing elastic support for the locking element. A drive assembly is connected to the same speed assembly. The drive assembly includes a paddle sleeve and a drive member. The paddle sleeve is provided with a connecting rod, which is connected to the drive member. The paddle sleeve is sleeved on the annular groove of the bushing. When the same speed component is in an idling state, the protrusion of the locking member is embedded in the groove of the bushing; When the same-speed component engages with the driven member at the same speed, the drive component drives the paddle sleeve to move the bushing toward the driven member. The bushing drives the locking member to slide along the groove and abut against the stop end to push the gear ring toward the driven member. The shaft hole of the gear ring engages with the embedded part of the driven member, and the friction force drives the driven member and the drive member to rotate at the same speed. Subsequently, the bushing continues to move toward the driven member. The inclined surface of the locking member cooperates with the ring spring to disengage the protrusion of the locking member from the groove of the bushing. After the bushing passes over the locking member, its inner teeth engage with the outer teeth on the outer periphery of the small disc of the driven member.

2. The fresh air air conditioner according to claim 1, characterized in that, There are three locking elements and three sliding grooves. The three locking elements are evenly distributed at equal intervals along the outer periphery of the annular spring, and the three sliding grooves are evenly distributed at equal intervals along the outer periphery of the driving element and the gear ring.

3. The fresh air air conditioner according to any one of claims 1-2, characterized in that, The driving member, the driven member, the gear ring, and the bushing are all provided with meshing teeth, which are conical in shape.

4. The fresh air air conditioner according to any one of claims 1-2, characterized in that, The impeller of the fresh air conditioner includes a fresh air impeller and a cross-flow impeller. The motor of the fresh air conditioner is a dual-shaft motor, which includes a first output shaft and a second output shaft. The driving component on the first output shaft is driven by the driven component on the cross-flow impeller through a same-speed assembly. The driving component on the second output shaft is driven by the driven component on the fresh air impeller through a same-speed assembly.

Images