Variable gear structure and air conditioning cabinet

Abstract

The utility model relates to the technical field of air handling units, and particularly discloses a change gear structure and an air handling unit, and the change gear structure comprises a driving gear set and a driven gear set. In the working process of the change gear structure, the first rotating shaft rotates, the first driven gear is meshed with the first driving gear, and after meshing is completed, the second driven gear is meshed with the second driving gear; the transmission ratio between the first driven gear and the first driving gear is set to be smaller than the transmission ratio between the second driven gear and the second driving gear, so that in the rotation process of the lower temperature air door from full cold to full hot, the front half section adopts the low transmission ratio, and the lower temperature air door is accelerated to be opened from full cold; and the rear half section adopts a high transmission ratio, so that the temperature air door is slowed down to a total heat mode, the requirements of users are met, and the problems that the requirements of the users cannot be met and the user experience feeling is poor due to the fact that the rotating speeds of upper and lower temperature air doors are consistent in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air handling units, in particular to a variable speed gear structure and an air handling unit. Background Art

[0002] In the prior art, the main driving wheel of the air handling unit drives the upper and lower driven wheels to rotate, and the rotation speeds of the upper and lower temperature air dampers are the same. Moreover, due to the addition of a heating core to increase the resistance of the hot channel inside the current air handling unit, the resistance will be greater than that of the cold channel, resulting in insufficient heated air passing through the heating core in the first half of the process of the air damper turning from full cold to full heat, and the temperature at the air outlet rising not significantly. In the second half, because the opening rate of the air damper remains constant, but the temperature difference changes greatly and the temperature rises too fast, which further leads to the inconsistent change of the opening of the temperature air damper and the temperature change at the air outlet of the air handling unit, and there are problems of not meeting the needs of users and poor user experience. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a variable speed gear structure and an air handling unit to solve the problem that the rotation speeds of the upper and lower temperature air dampers in the prior art are the same, resulting in the inability to meet the needs of users and poor user experience.

[0004] On the one hand, the utility model provides a variable speed gear structure, which includes: a driving gear set, including a first rotating shaft and a first driving gear and a second driving gear arranged on the first rotating shaft. Along the circumferential direction of the first rotating shaft, the first driving gear and the second driving gear are spaced apart, and the first rotating shaft is rotatably arranged; a driven gear set, including a second rotating shaft and a first driven gear and a second driven gear arranged on the second rotating shaft. Along the circumferential direction of the second rotating shaft, the first driven gear and the second driven gear are spaced apart. The second rotating shaft can be connected to the lower temperature air damper of the air handling unit. The first driven gear meshes with the first driving gear, and the second driven gear meshes with the second driving gear. The transmission ratio between the first driven gear and the first driving gear is less than the transmission ratio between the second driven gear and the second driving gear.

[0005] As an optional technical solution of the variable speed gear structure, the transmission ratio between the first driven gear and the first driving gear is 1:2, and the transmission ratio between the second driven gear and the second driving gear is 2:1.

[0006] As an optional technical solution of the variable speed gear structure, the radius of the first driving gear is greater than the radius of the second driving gear, and the radius of the first driven gear is less than the radius of the second driven gear.

[0007] As an optional technical solution of the variable speed gear structure, both the first driving gear and the second driven gear are sector gears.

[0008] As an alternative technical solution of the variable-speed gear structure, the variable-speed gear structure further includes a first meshing circle and a second meshing circle. The first meshing circle is arranged on the first rotating shaft. In the circumferential direction of the first rotating shaft, the first meshing circle is located between the first driving gear and the second driving gear. The second meshing circle is arranged on the second rotating shaft. In the circumferential direction of the second rotating shaft, the second meshing circle is located between the first driven gear and the second driven gear. The first meshing circle and the second meshing circle are in contact with each other.

[0009] As an alternative technical solution of the variable-speed gear structure, one of the first meshing circle and the second meshing circle has a convex end face, and the other has a concave end face. The convex end face and the concave end face are in contact with each other.

[0010] As an alternative technical solution of the variable-speed gear structure, the driving gear set further includes a transmission gear arranged on the first rotating shaft. The transmission gear is rotatably arranged to drive the first rotating shaft to rotate.

[0011] On the other hand, the present utility model provides an air-conditioning box, which includes a driving assembly, a transmission structure, a connecting rod, an upper temperature air door, a lower temperature air door and the variable-speed gear structure in any of the above solutions. The transmission structure is connected to the upper temperature air door, and the transmission structure is connected to one end of the connecting rod. The other end of the connecting rod is connected to the transmission gear of the variable-speed gear structure. The driving assembly and the transmission structure are drivingly connected. The transmission structure drives the opening degree of the upper temperature air door and drives the connecting rod to move. The connecting rod drives the transmission gear to rotate.

[0012] As an alternative technical solution of the air-conditioning box, the transmission structure includes a main driving gear and a driven driving gear. The driving assembly and the main driving gear are drivingly connected. The main driving gear and the driven driving gear are meshed and connected to one end of the connecting rod. The driven driving gear is connected to the upper temperature air door.

[0013] As an alternative technical solution of the air-conditioning box, both ends of the connecting rod respectively have a first rack and a second rack. The driven driving gear is meshed with the first rack, and the transmission gear is meshed with the second rack.

[0014] The beneficial effects of the present utility model are:

[0015] The present utility model provides a variable-speed gear structure, which includes a driving gear set and a driven gear set. Among them, the driving gear set includes a first rotating shaft and a first driving gear and a second driving gear arranged on the first rotating shaft, and the driven gear set includes a second rotating shaft and a first driven gear and a second driven gear arranged on the second rotating shaft. In the working process of the variable-speed gear structure of the present utility model, the first rotating shaft rotates, the first driven gear meshes with the first driving gear, and after the meshing is completed, the second driven gear meshes with the second driving gear, and the transmission ratio between the first driven gear and the first driving gear is set to be less than the transmission ratio between the second driven gear and the second driving gear. In this way, during the rotation of the lower temperature air door from full cold to full heat, a low transmission ratio is adopted in the first half section to accelerate the opening of the lower temperature air door from full cold, and a high transmission ratio is adopted in the second half section to decelerate the temperature air door to the full heat mode, meeting the needs of users and improving the user experience. Thus, it effectively solves the problem in the prior art that the rotation speeds of the upper and lower temperature air doors are the same, resulting in the inability to meet the needs of users and poor user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the variable-speed gear structure in the first stage in an embodiment of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the variable-speed gear structure in the second stage in an embodiment of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the variable-speed gear structure in the third stage in an embodiment of the present utility model;

[0019] Figure 4 is a schematic structural diagram of an air-conditioning box in another embodiment of the present utility model.

[0020] In the figure:

[0021] 1. Driving gear set; 11. First rotating shaft; 12. First driving gear; 13. Second driving gear; 14. Transmission gear;

[0022] 2. Driven gear set; 21. Second rotating shaft; 22. First driven gear; 23. Second driven gear;

[0023] 3. First meshing circle;

[0024] 4. Second meshing circle;

[0025] 5. Transmission structure; 51. Main driving gear; 52. Driven driving gear;

[0026] 6. Connecting rod; 61. First rack; 62. Second rack;

[0027] 7. Lower temperature air damper. Detailed implementation manners

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0032] As Figures 1 to 3As shown in the figure, this embodiment provides a variable-speed gear structure, which includes a driving gear set 1 and a driven gear set 2. Among them, the driving gear set 1 includes a first rotating shaft 11 and a first driving gear 12 and a second driving gear 13 arranged on the first rotating shaft 11, and the driven gear set 2 includes a second rotating shaft 21 and a first driven gear 22 and a second driven gear 23 arranged on the second rotating shaft 21. In the working process of the variable-speed gear structure of the present invention, the first rotating shaft 11 rotates, the first driven gear 22 meshes with the first driving gear 12, and after the meshing is completed, the second driven gear 23 meshes with the second driving gear 13, and the transmission ratio between the first driven gear 22 and the first driving gear 12 is set to be less than the transmission ratio between the second driven gear 23 and the second driving gear 13. In this way, during the rotation process of the lower temperature air door 7 from full cold to full hot, a low transmission ratio is adopted in the first half, so that the lower temperature air door 7 is accelerated to open from full cold, and a high transmission ratio is adopted in the second half, so that the lower temperature air door 7 is decelerated to the full hot mode, meeting the needs of users and improving the user experience. Thus, it effectively solves the problem that the rotation speeds of the upper and lower temperature air doors in the prior art are the same, resulting in the inability to meet the needs of users and poor user experience.

[0033] Among them, along the circumferential direction of the first rotating shaft 11, the first driving gear 12 and the second driving gear 13 are spaced apart, so as to avoid interference during the rotation process; similarly, along the circumferential direction of the second rotating shaft 21, the first driven gear 22 and the second driven gear 23 are spaced apart to avoid interference during the rotation process.

[0034] Specifically, in order to further meet the needs of users and improve the user experience, the present invention sets the transmission ratio between the first driven gear 22 and the first driving gear 12 to 1:2, and sets the transmission ratio between the second driven gear 23 and the second driving gear 13 to 2:1. With such a setting, it can meet the requirement that during the rotation process of the lower temperature air door 7 from full cold to full hot, a low transmission ratio is adopted in the first half with a gear to accelerate the lower temperature air door 7 to open from full cold, and a high transmission ratio is adopted in the second half with a gear to decelerate the lower temperature air door 7 to the full hot mode, so as to achieve a linear positive correlation between the opening degree of the air door and the temperature, thereby improving the user experience.

[0035] In this embodiment, in order to prevent the meshing between the first driven gear 22 and the first driving gear 12 from interfering with the meshing between the second driven gear 23 and the second driving gear 13, in this embodiment, the radius of the first driving gear 12 is set to be larger than the radius of the second driving gear 13, and the radius of the first driven gear 22 is set to be smaller than the radius of the second driven gear 23, so as to avoid interference during meshing.

[0036] Such as Figure 1As shown, the first driving gear 12 and the second driven gear 23 are both sector gears. With such a setting, the meshing time between the first driven gear 22 and the first driving gear 12, and the meshing time between the second driven gear 23 and the second driving gear 13 can be controlled by the size of the sector.

[0037] Specifically, as Figure 2 and Figure 3 shown, the speed-changing gear structure further includes a first meshing circle 3 and a second meshing circle 4. The first meshing circle 3 is arranged on the first rotating shaft 11. In the circumferential direction of the first rotating shaft 11, the first meshing circle 3 is located between the first driving gear 12 and the second driving gear 13; the second meshing circle 4 is arranged on the second rotating shaft 21. In the circumferential direction of the second rotating shaft 21, the second meshing circle 4 is located between the first driven gear 22 and the second driven gear 23, and the first meshing circle 3 and the second meshing circle 4 are in contact with each other. With such a setting, it is possible to make a transition between the meshing between the first driven gear 22 and the first driving gear 12 and the meshing between the second driven gear 23 and the second driving gear 13, and prevent gear cutting during the conversion process.

[0038] Among them, one of the first meshing circle 3 and the second meshing circle 4 is provided with a convex end face, and the other is provided with a concave end face, and the convex end face and the concave end face are in contact with each other. In this way, the phenomenon of gear cutting can be prevented when making a transition between the meshing between the first driven gear 22 and the first driving gear 12 and the meshing between the second driven gear 23 and the second driving gear 13.

[0039] Furthermore, the speed-changing gear structure has a first stage, a second stage, and a third stage. As Figure 1 shown, in the first stage, the first driven gear 22 and the first driving gear 12 are meshed; as Figure 2 shown, in the second stage, the first meshing circle 3 and the second meshing circle 4 are meshed; as Figure 3 shown, in the third stage, the second driven gear 23 and the second driving gear 13 are meshed.

[0040] In this embodiment, the driving gear set 1 further includes a transmission gear 14 arranged on the first rotating shaft 11. Among them, the transmission gear 14 is rotatably arranged, so that the transmission gear 14 can be used to drive the first rotating shaft 11 to rotate.

[0041] As Figure 4As shown in the figure, this embodiment further provides an air handling unit, which includes a driving component, a transmission structure 5, a connecting rod 6, an upper temperature air damper, a lower temperature air damper 7, and the variable speed gear structure in the above solution. The transmission structure 5 is connected to the upper temperature air damper. The transmission structure 5 is connected to one end of the connecting rod 6. The other end of the connecting rod 6 is connected to the transmission gear 14 of the variable speed gear structure. The driving component is drivingly connected to the transmission structure 5. The transmission structure 5 drives the opening degree of the upper temperature air damper and drives the connecting rod 6 to move. The connecting rod 6 drives the transmission gear 14 to rotate.

[0042] Among them, the transmission structure 5 includes a main driving gear 51 and a driven driving gear 52. The driving component is drivingly connected to the main driving gear 51. The main driving gear 51 meshes with the driven driving gear 52 and is connected to one end of the connecting rod 6. The driven driving gear 52 is connected to the upper temperature air damper. Further, both ends of the connecting rod 6 respectively have a first rack 61 and a second rack 62. The main driving gear 51 meshes with the first rack 61, and the transmission gear 14 meshes with the second rack 62.

[0043] In the air handling unit provided in this embodiment, the driving component drives the main driving wheel 51 to rotate. The main driving wheel 51 drives the first rack 61 and the driven driving gear 52 to rotate, so that the upper temperature air damper is opened. At the same time, the second rack 62 drives the transmission gear 14 to rotate. The transmission gear 14 drives the lower temperature air damper to rotate at a variable speed through the driving gear set 1 and the driven gear set 2.

[0044] Among them, the driving component includes a driving motor, and the driving motor drives the main driving wheel 51 to rotate.

[0045] The advantages of the present utility model are as follows:

[0046] In order to meet the user's linear demand for the temperature change at the air outlet, a variable speed gear structure is designed. During the rotation process of the lower temperature air damper from full cold to full hot, a low transmission ratio matching gear is used in the first half to accelerate the opening of the lower temperature air damper from full cold. A high transmission ratio matching gear is used in the second half to decelerate the lower temperature air damper to the full hot mode, so as to achieve the purpose of a linear positive correlation between the opening degree of the temperature air damper and the temperature.

[0047] Obviously, the above embodiments of the present utility model are only examples for clearly explaining the present utility model, and are not limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A speed change gear structure, characterized in that: include: A driving gear set (1) comprises a first rotating shaft (11) and a first driving gear (12) and a second driving gear (13) arranged on the first rotating shaft (11), wherein the first driving gear (12) and the second driving gear (13) are spaced apart from each other along the circumference of the first rotating shaft (11), and the first rotating shaft (11) is rotatably arranged; The driven gear set (2) comprises a second rotating shaft (21) and a first driven gear (22) and a second driven gear (23) arranged on the second rotating shaft (21); along the circumference of the second rotating shaft (21), the first driven gear (22) and the second driven gear (23) are spaced apart; the second rotating shaft (21) can be connected to a lower temperature damper (7) of an air conditioner; the first driven gear (22) is meshed with the first driving gear (12); the second driven gear (23) is meshed with the second driving gear (13); the transmission ratio between the first driven gear (22) and the first driving gear (12) is smaller than the transmission ratio between the second driven gear (23) and the second driving gear (13).

2. The speed change gear structure according to claim 1, characterized in that: The transmission ratio between the first driven gear (22) and the first driving gear (12) is 1:2, and the transmission ratio between the second driven gear (23) and the second driving gear (13) is 2:

1.

3. The speed change gear structure according to claim 1, characterized in that: The radius of the first driving gear (12) is greater than the radius of the second driving gear (13), and the radius of the first driven gear (22) is smaller than the radius of the second driven gear (23).

4. The speed change gear structure according to claim 1, characterized in that: The first driving gear (12) and the second driven gear (23) are both sector gears.

5. The speed change gear structure according to claim 1, characterized in that: The speed change gear structure further comprises a first meshing circle (3) and a second meshing circle (4); the first meshing circle (3) is arranged on the first rotating shaft (11); in the circumferential direction of the first rotating shaft (11), the first meshing circle (3) is located between the first driving gear (12) and the second driving gear (13); the second meshing circle (4) is arranged on the second rotating shaft (21); in the circumferential direction of the second rotating shaft (21), the second meshing circle (4) is located between the first driven gear (22) and the second driven gear (23); the first meshing circle (3) and the second meshing circle (4) are in contact with each other.

6. The speed change gear structure according to claim 5, characterized in that: One of the first meshing circle (3) and the second meshing circle (4) has a convex end surface, and the other has a concave end surface, and the convex end surface and the concave end surface are in contact with each other.

7. The speed change gear structure according to claim 1, characterized in that: The driving gear set (1) further comprises a transmission gear (14) arranged on the first rotating shaft (11); the transmission gear (14) is rotatably arranged to drive the first rotating shaft (11) to rotate.

8. An air conditioning box, characterized in that: The invention comprises a driving assembly, a transmission structure (5), a connecting rod (6), an upper temperature air door, a lower temperature air door (7) and a speed change gear structure as described in any one of claims 1 to 7, wherein the transmission structure (5) is connected to the upper temperature air door, the transmission structure (5) is connected to one end of the connecting rod (6), the other end of the connecting rod (6) is connected to the transmission gear (14) of the speed change gear structure, the driving assembly and the transmission structure (5) are drivingly connected, the transmission structure (5) drives the opening of the upper temperature air door and drives the connecting rod (6) to move, and the connecting rod (6) drives the transmission gear (14) to rotate.

9. The air conditioning box according to claim 8, characterized in that: The transmission structure (5) comprises a main driving gear (51) and a slave driving gear (52); the driving assembly is drivingly connected to the main driving gear (51); the main driving gear (51) is meshed with the slave driving gear (52) and is connected to one end of the connecting rod (6); and the slave driving gear (52) is connected to the upper temperature damper.

10. The air conditioning box according to claim 9, characterized in that: The two ends of the connecting rod (6) are respectively provided with a first rack (61) and a second rack (62); the slave driving gear (52) is meshed with the first rack (61); and the transmission gear (14) is meshed with the second rack (62).

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