Ventilation equipment and cabinet type air conditioner

Abstract

The invention provides ventilation equipment and a cabinet type air conditioner. An air outlet channel is formed in the ventilation equipment, and an air outlet communicating with the air outlet channel is formed in the shell wall of the ventilation equipment; a flow guide mechanism is arranged in the air outlet duct, the flow guide mechanism comprises a grating frame and grating pieces, and the grating frame is rotatably arranged in the air outlet duct and forms a frame ventilation opening; the plurality of grating sheets are arranged in the frame ventilation opening at intervals; when the grid frame is located at the first position, the whole grid frame is close to the air outlet; air in the air outlet channel can flow to the air outlet through a gap between every two adjacent grating sheets; when the grating frame is located at the second position, the grating frame is arranged close to one side wall of the air outlet duct and is hidden above or below the air outlet; air in the air outlet channel does not flow through the frame ventilation opening and directly flows to the air outlet; the appearance integrity of the air outlet is not affected, air flowing is not affected, and the problems that an air guide structure in existing ventilation equipment is complex, and the appearance integrity is affected are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ventilation equipment, and in particular relates to ventilation equipment and a cabinet air conditioner. Background Art

[0002] In existing ventilation equipment, in order to improve the air outlet effect, an air sweeping mechanism or an air guiding mechanism is provided at the air outlet. The air sweeping mechanism or the air guiding mechanism includes a plurality of air guide plates, which control the rotation of the air guide plates to guide the air to the top, bottom, left or right of the air outlet; however, the air guiding structure is complex, which affects the overall appearance. Summary of the invention

[0003] In view of this, the present invention provides a ventilation device and a cabinet air conditioner to solve the problem that the air guide structure of the existing ventilation device is complicated and affects the integrity of the appearance.

[0004] The present invention provides a ventilation device, wherein an air outlet is formed inside the ventilation device, and an air outlet connected to the air outlet is formed on a shell wall of the ventilation device; a flow guide mechanism is arranged inside the air outlet, and the flow guide mechanism comprises:

[0005] A grille frame is rotatably disposed in the air outlet and is formed with a frame vent; the grille frame is provided with a first position and a second position;

[0006] A plurality of grille sheets are provided, and the plurality of grille sheets are arranged in the frame vent at intervals;

[0007] When the grille frame is in the first position, the grille frame is disposed as a whole close to the air outlet; a plurality of grille sheets open the frame vent, and the air in the air outlet duct can flow to the air outlet through the gap between two adjacent grille sheets;

[0008] When the grille frame is in the second position, the grille frame is disposed as a whole close to a side wall of the air outlet and is hidden above or below the air outlet; the air in the air outlet does not flow through the frame vent but directly flows to the air outlet.

[0009] Further optionally, the air outlet duct includes a first air duct section arranged close to the air outlet and a second air duct section arranged away from the air outlet, the second air duct section is located above or below the first air duct section; the air outlet, the first air duct section and the second air duct section are connected in sequence; the grille frame is rotatably arranged between the first air duct section and the second air duct section;

[0010] When the grille frame is in the first position, the grille frame is located in the first air duct section;

[0011] When the grille frame is in the second position, the grille frame is located in the second air duct section.

[0012] Further optionally, the side wall of the air outlet duct includes a first air duct segment upper wall, a first air duct segment lower wall, a second air duct segment front wall, and a second air duct segment rear wall, the first air duct segment upper wall and the first air duct segment lower wall are arranged opposite to each other vertically, and the second air duct segment front wall and the second air duct segment rear wall are arranged opposite to each other front and back; the second air duct segment front wall is connected to the first air duct segment upper wall, and an escape space is formed at one end of the second air duct segment front wall close to the first air duct segment upper wall; the second air duct segment rear wall is connected to the first air duct segment lower wall;

[0013] The grille frame comprises a first grille frame and a second grille frame which are arranged opposite to each other; the first grille frame is rotatably arranged near the connection between the front wall of the second air duct section and the upper wall of the first air duct section;

[0014] When the grille frame is in the first position, the second grille frame is disposed close to the lower wall of the first air duct segment;

[0015] When the grille frame is in the second position, the grille frame is located in the avoidance space.

[0016] Further optionally, the grille frame is further provided with a third position, and the grille frame passes through the third position when rotating from the first position to the second position;

[0017] When the grille frame is in the third position, the grille frame is entirely located between the first air duct segment and the second air duct segment.

[0018] Further optionally, a plurality of the grille sheets are rotatably arranged in the frame vent, and the air guide directions of the plurality of the grille sheets are adjustable;

[0019] When the grille frame is in the first position, the flow diversion direction of the grille sheet can be adjusted by adjusting the rotation of the grille sheet relative to the grille frame;

[0020] When the grille frame is in the second position, the plurality of grille pieces close the frame vents.

[0021] Further optionally, the grille frame and the grille sheets are connected via a linkage assembly; under the action of the linkage assembly, when the grille frame rotates, the grille sheets also rotate.

[0022] Further optionally, the grille frame is rotatably arranged between the first air duct section and the second air duct section via a grille frame shaft, and the grille frame can rotate synchronously with the grille frame shaft; the grille sheet is rotatably arranged on the grille frame via a grille sheet shaft, and the grille sheet can rotate synchronously with the grille sheet shaft;

[0023] The linkage assembly is arranged in the air outlet duct and located on the outside of the grille frame, and the linkage assembly includes a first gear and a first rack that mesh with each other and a second gear and a second rack that mesh with each other, the first gear is fixedly arranged and the first gear and the grille frame shaft are coaxially arranged, the grille frame shaft can rotate relative to the first gear, and the first rack and the second rack are integrally formed or fixedly connected; the first rack and the second rack can both rotate synchronously with the grille frame and can slide relative to the grille frame; there are multiple second gears, and the multiple second gears correspond to the multiple grille sheet shafts one by one and are coaxially fixedly connected;

[0024] When the grille frame shaft is controlled to rotate, the grille frame rotates, the first rack and the second rack rotate synchronously with the grille frame, the first gear causes the first rack and the second rack to slide relative to the grille frame, the second gear rotates, and then the grille sheet shaft rotates with the corresponding grille sheet.

[0025] Further optionally, the side wall of the air outlet duct further comprises a left wall and a right wall of the air outlet duct which are arranged opposite to each other on the left and right sides, and the air outlet end of the left wall of the air outlet duct, the upper wall of the first air duct section, the air outlet end of the right wall of the air outlet duct and the lower wall of the first air duct section are arranged to form the first air duct section; the air inlet end of the left wall of the air outlet duct, the front wall of the second air duct section, the air inlet end of the right wall of the air outlet duct and the rear wall of the second air duct section are arranged to form the second air duct section;

[0026] The first grille frame is provided with the grille frame shaft, and the grille frame shaft is rotatably arranged on the left wall and the right wall of the air duct;

[0027] The grille frame further comprises a third grille frame and a fourth grille frame which are arranged opposite to each other on the left and right sides, wherein the third grille frame is arranged corresponding to the same side of the left wall of the air duct, and the fourth grille frame is arranged corresponding to the same side of the right wall of the air duct;

[0028] The grid sheet is provided with the grid sheet shaft, and the grid sheet shaft is rotatably arranged on the third grid frame and the fourth grid frame;

[0029] The first gear, the first rack, the second gear and the second rack are located on the same side of the outer side of the grille frame;

[0030] The first gear is fixedly disposed between the left wall of the air duct and the third grille frame, and the second rack is slidably disposed on the third grille frame; and / or,

[0031] The first gear is fixedly arranged between the right wall of the air duct and the fourth grid frame, and the second rack is slidably arranged on the fourth grid frame.

[0032] Further optionally, the first gear is formed with a gear hole which surrounds the outer peripheral side of the grille frame shaft, and thus the grille frame shaft can rotate relative to the first gear.

[0033] Further optionally, when the grille frame is in the first position, the inclination angle of the main surface of the grille blade with respect to the vertical plane is α; when the air outlet is formed at the upper end of the housing wall, α satisfies: 10° < α < 170° and / or α > arctan(a / b); when the air outlet is formed at the lower end of the housing wall, α satisfies: 90° < α < 170° and / or α > arctan(a / b);

[0034] Wherein, a is the horizontal distance between the end of the grille blade close to the air outlet and the upper edge of the air outlet, and b is the vertical distance between the top of the second grille blade from top to bottom and the upper edge of the air outlet.

[0035] Further optionally, the width of the grille frame is L, the thickness of the grille frame is D, the number of the grille blades is n, D satisfies: 20mm < D ≤ 40mm, and L, D, α and n satisfy: L = D * sinα / n.

[0036] Further optionally, when the grille frame is in the first position, from the upper end to the lower end of the frame ventilation opening, the air flow velocity flowing through the frame ventilation opening gradually increases, and the distance between adjacent two grille blades gradually decreases.

[0037] Further optionally, at the position where the air flow velocity is greater than the preset flow velocity, the distance between adjacent two grille blades is d1, and d1 satisfies: 10mm ≤ d1 < 20mm, d1 < 4 * D * sinα;

[0038] At the position where the air flow velocity is less than or equal to the preset flow velocity, the distance between adjacent two grille blades is d2, and d2 satisfies: 20mm ≤ d2 ≤ 50mm, d2 ≤ 4 * D * sinα.

[0039] Further optionally, the distance between the first grille frame and the rear wall of the second air duct section is c, and c satisfies: c ≥ 50mm.

[0040] Further optionally, the grille frame can be controlled to rotate independently, and multiple grille blades can be controlled to rotate simultaneously or each grille blade can be controlled to rotate independently.

[0041] The present invention also provides a cabinet air conditioner, including the ventilation device described in any one of the above.

[0042] Compared with the prior art, the beneficial effects of the present invention mainly lie in:

[0043] The grille frame is rotatably arranged in the air outlet duct. When the grille frame is in a first position, the grille frame is arranged close to the air outlet as a whole. The air in the air outlet duct can flow to the air outlet through the gap between two adjacent grille sheets, and the grille sheets have a guiding effect on the air. When the grille frame is in a second position, the grille frame is hidden above or below the air outlet as a whole, which does not affect the overall appearance of the air outlet and the air flow, thereby solving the problem of complex air guide structure in existing ventilation equipment, which affects the overall appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0045] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0046] Figure 1 A schematic diagram of the exploded structure of a ventilation device embodiment provided by the present invention;

[0047] Figure 2a and Figure 2b A schematic diagram of the assembly structure of the flow guide mechanism and linkage assembly embodiment provided by the present invention;

[0048] Figure 2c for Figure 2a Enlarged view of point A in the middle;

[0049] Figure 3 A schematic diagram of the assembly structure of a grille sheet and linkage assembly embodiment provided by the present invention;

[0050] Figure 4a , Figure 4b and Figure 4c A schematic structural diagram of an embodiment of the ventilation device provided by the present invention when the grille frame is in the first position;

[0051] Figure 5a and Figure 5b A schematic structural diagram of an embodiment of the ventilation device provided by the present invention when the grille frame is in the second position;

[0052] Figure 6A schematic structural diagram of an embodiment of the ventilation device provided by the present invention when the grille frame is in the third position;

[0053] Figure 7a A simulation cloud diagram of the ventilation device provided by the present invention when D=10mm;

[0054] Figure 7b A simulation cloud diagram of the ventilation device provided by the present invention when D=30mm;

[0055] Figure 7c A simulation cloud diagram of the ventilation device provided by the present invention when D=80mm;

[0056] Figure 8a A simulated cloud diagram of the ventilation device provided by the present invention when the grille frame is in the first position;

[0057] Figure 8b A simulated cloud diagram of the ventilation device provided by the present invention when the grille frame is in the second position;

[0058] Figure 9a and Figure 9b A simulation cloud diagram of the ventilation device provided by the present invention when the grille pieces are arranged intermittently and unevenly;

[0059] In the figure:

[0060] 1-air outlet; 11-first air duct section; 111-upper wall of first air duct section; 112-lower wall of first air duct section; 1121-front lower wall of first air duct section; 1122-rear lower wall of first air duct section; 12-second air duct section; 121-front wall of second air duct section; 122-rear wall of second air duct section; 123-avoidance space; 131-left wall of air duct; 132-right wall of air duct;

[0061] 2-air outlet; 21-upper edge;

[0062] 31-grid frame; 311-first grid frame; 312-second grid frame; 313-third grid frame; 314-fourth grid frame; 315-frame vent; 316-grid frame axis; 32-grid sheet; 321-grid sheet axis;

[0063] 4- linkage assembly; 41- first gear; 411- gear hole; 42- first rack; 43- second gear; 44- second rack. DETAILED DESCRIPTION

[0064] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0065] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0066] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0067] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0068] In the existing ventilation equipment, in order to improve the air outlet effect, a wind sweeping mechanism or wind guide mechanism is set at the air outlet. The wind sweeping mechanism or wind guide mechanism includes multiple wind guide plates, which control the rotation of the wind guide plates to guide the air to the top, bottom, left or right of the air outlet; but the wind guide structure is complicated, which affects the overall appearance. In order to ensure the overall appearance, some people have proposed to set an air outlet frame at the air outlet without designing wind guide structures such as grilles and wind guide plates. The air outlet has a simple appearance and good appearance effect; but there is no wind guide structure, the air outlet direction is single, and the air outlet direction cannot be adjusted;

[0069] The present invention creatively provides a ventilation device, wherein an air outlet is formed inside the ventilation device, and an air outlet connected to the air outlet is formed on a shell wall of the ventilation device; a guide mechanism is arranged in the air outlet, and the guide mechanism includes a grille frame and grille sheets, the grille frame is rotatably arranged in the air outlet and forms a frame air outlet; a plurality of grille sheets are arranged in the frame air outlet at intervals; when the grille frame is in a first position, the grille frame is arranged close to the air outlet as a whole; the air in the air outlet can flow to the air outlet through the gap between two adjacent grille sheets, and the grille sheets have a guiding effect on the air; when the grille frame is in a second position, the grille frame is arranged close to a side wall of the air outlet as a whole and is hidden above or below the air outlet, so as not to affect the appearance of the air outlet; the air in the air outlet does not flow through the frame air outlet but directly flows to the air outlet.

[0070] Example 1

[0071] like Figures 1 to 5b As shown, this embodiment provides a ventilation device, wherein an air outlet 1 is formed inside the ventilation device, and an air outlet 2 connected to the air outlet 1 is formed on the shell wall of the ventilation device; specifically, the air outlet 2 can be an air outlet 2 located at the upper end of the shell wall, or can be an air outlet 2 located at the lower end of the shell wall; a guide mechanism is provided in the air outlet 1, and the guide mechanism includes:

[0072] The grille frame 31 is rotatably disposed in the air outlet 1 and is formed with a frame vent 315; the grille frame 31 is provided with a first position and a second position;

[0073] A plurality of grille sheets 32 are provided, and the plurality of grille sheets 32 are arranged at intervals in the frame vent 315; specifically, the length direction of the grille sheet 32 ​​is consistent with the left-right direction of the grille frame 31, that is, the length direction of the grille sheet 32 ​​is consistent with the length direction of the grille frame 31, and the plurality of grille sheets 32 are arranged at intervals in the width direction of the grille frame 31, and a gap is formed between two adjacent grille sheets 32;

[0074] When the grille frame 31 is in the first position, the grille frame 31 is disposed as a whole close to the air outlet 2; the plurality of grille sheets 32 open the frame vents 315, and the air in the air outlet 1 can flow toward the air outlet 2 through the gap between two adjacent grille sheets 32;

[0075] When the grille frame 31 is in the second position, the grille frame 31 is disposed as a whole close to a side wall of the air outlet 1 and is hidden above or below the air outlet 2; the air in the air outlet 1 does not flow through the frame vent 315 but directly flows to the air outlet 2.

[0076] Example 2

[0077] like Figures 1 to 9bAs shown, on the basis of embodiment 1, the air outlet 1 includes a first air duct section 11 arranged near the air outlet 2 and a second air duct section 12 arranged away from the air outlet 2, and the second air duct section 12 is located above or below the first air duct section 11; specifically, when the air outlet 2 is located at the upper end of the shell wall, the second air duct section 12 is located below the first air duct section 11; when the air outlet 2 is located at the lower end of the shell wall, the second air duct section 12 is located above the first air duct section 11; the air outlet 2, the first air duct section 11 and the second air duct section 12 are connected in sequence; the grille frame 31 is rotatably arranged between the first air duct section 11 and the second air duct section 12;

[0078] When the grille frame 31 is in the first position, the grille frame 31 is located in the first air duct section 11;

[0079] When the grille frame 31 is at the second position, the grille frame 31 is located in the second air duct section 12 .

[0080] Specifically, the grille frame 31 is rotatably arranged between the first air duct section 11 and the second air duct section 12 through a first rotating mechanism, including the following three situations: ① The first rotating mechanism is arranged at the connecting point of the first air duct section 11 and the second air duct section 12; ② The first rotating mechanism is arranged in the first air duct section 11 and close to the connecting point of the first air duct section 11 and the second air duct section 12; ③ The first rotating mechanism is arranged in the second air duct section 12 and close to the connecting point of the first air duct section 11 and the second air duct section 12.

[0081] The present embodiment further proposes that the side wall of the air outlet 1 includes a first air duct section upper wall 111, a first air duct section lower wall 112, a second air duct section front wall 121, and a second air duct section rear wall 122. The first air duct section upper wall 111 and the first air duct section lower wall 112 are arranged opposite to each other up and down, and the second air duct section front wall 121 and the second air duct section rear wall 122 are arranged opposite to each other front and back; the second air duct section front wall 121 is connected to the first air duct section upper wall 111, and an escape space 123 is formed at one end of the second air duct section front wall 121 close to the first air duct section upper wall 111; the second air duct section rear wall 122 is connected to the first air duct section lower wall 112;

[0082] Further, the first air duct section lower wall 112 includes a first air duct section front lower wall 1121 and a first air duct section rear lower wall 1122, the first air duct section front lower wall 1121 extends in the front-to-back direction, the first air duct section rear lower wall 1122 is arc-shaped and extends from top to bottom; the second air duct section rear wall 122, the first air duct section rear lower wall 1122 and the first air duct section front lower wall 1121 are connected in sequence;

[0083] The grille frame 31 includes a first grille frame 311 and a second grille frame 312 that are arranged opposite to each other; the first grille frame 311 is rotatably arranged near the connection between the second air duct section front wall 121 and the first air duct section upper wall 111 through a first rotating mechanism;

[0084] When the grille frame 31 is in the first position, the second grille frame 312 is arranged close to the front lower wall 1121 of the first air duct section; specifically, when the air outlet 2 is located at the upper end of the shell wall, the first grille frame 311 is located below the second grille frame 312; when the air outlet 2 is located at the lower end of the shell wall, the first grille frame 311 is located above the second grille frame 312; the air flows through the second air duct section 12, the first air duct section 11, the frame vent 315, the gap between two adjacent grille sheets 32 and the air outlet 2, and flows to the environment where the ventilation device is located;

[0085] When the grille frame 31 is in the second position, the grille frame 31 is located in the avoidance space 123; preferably, the grille frame 31 is located as a whole in the avoidance space 123; the grille frame 31 is close to the edge of the second air duct section 12 and is flush with the second air duct section front wall 121, and multiple grille sheets 32 close the frame vents 315, and the air in the air outlet 1 does not flow through the frame vents 315 but directly flows to the air outlet 2; the grille sheets 32 have a small flow resistance to air, reducing air pressure loss; the guide mechanism cannot be seen from the air outlet 2, and the overall appearance of the air outlet 2 has simple lines; specifically, when the air outlet 2 is located at the upper end of the shell wall, the first grille frame 311 is located above the second grille frame 312; when the air outlet 2 is located at the lower end of the shell wall, the first grille frame 311 is located below the second grille frame 312.

[0086] In addition, the grille frame 31 is further provided with a third position, and the grille frame 31 passes through the third position when rotating from the first position to the second position; when the grille frame 31 is in the third position, the grille frame 31 is located as a whole between the first air duct segment 11 and the second air duct segment 12; specifically, the grille frame 31 is located as a whole between the first air duct segment 11 and the second air duct segment 12, including the following three situations: ① When the first rotating mechanism is arranged at the connecting part of the first air duct segment 11 and the second air duct segment 12, the grille frame 31 is located as a whole between the first air duct segment 11 and the second air duct segment 12 ② When the first rotating mechanism is arranged in the first air duct segment 11 and close to the connecting portion between the first air duct segment 11 and the second air duct segment 12, the grille frame 31 is located as a whole in the first air duct segment 11 and close to the connecting portion between the first air duct segment 11 and the second air duct segment 12; ② When the first rotating mechanism is arranged in the second air duct segment 12 and close to the connecting portion between the first air duct segment 11 and the second air duct segment 12, the grille frame 31 is located as a whole in the second air duct segment 11 and close to the connecting portion between the first air duct segment 11 and the second air duct segment 12;

[0087] When the ventilation equipment is in the off state, the grille frame 31 can be in the third position, which has a rodent-proof function and prevents large foreign objects from entering the air outlet 1 from the air outlet 2; the first grille frame 311 is located in front of the second grille frame 312; there is no need to set other grilles in the air outlet 1 to prevent foreign objects from entering. By placing the grille frame 31 in the third position, the function of preventing foreign objects from entering the air outlet 1 can be achieved, thereby simplifying the structure in the air outlet 1.

[0088] The present embodiment further proposes that a plurality of grille pieces 32 are rotatably disposed in the frame vent 315, and the air guide directions of the plurality of grille pieces 32 are adjustable; the plurality of grille pieces 32 can be controlled to rotate simultaneously or each grille piece 32 can be controlled to rotate independently; specifically, the grille pieces 32 are rotatably disposed on the grille frame 31 through a second rotating mechanism;

[0089] When the grille frame 31 is in the first position, the flow direction of the grille sheet 32 ​​can be adjusted by controlling the grille sheet 32 ​​to rotate relative to the grille frame 31;

[0090] When the grille frame 31 is in the second position, the plurality of grille pieces 32 close the frame vents 315, and the air in the air outlet 1 does not flow through the frame vents 315 but directly flows to the air outlet 2;

[0091] It can be seen that when the air outlet direction of the air outlet 2 needs to be adjusted, the grille frame 31 is placed in the first position, and the grille sheet 32 ​​is controlled to rotate relative to the grille frame 31 to adjust the air flow direction of the grille sheet 32, thereby achieving multi-directional air outlet and improving the air outlet effect.

[0092] When the air outlet direction of the air outlet 2 does not need to be adjusted, the grille frame 31 is placed in the second position, and the grille frame 31 is completely hidden above or below the air outlet 2, which does not affect the overall appearance of the air outlet 2, does not affect the air flow, reduces the air outlet resistance, and can achieve large air volume outlet; increase the air supply distance and expand the air supply range;

[0093] Taking into account the aesthetic appearance and adjustability of the air outlet direction of the air outlet 2 without affecting the appearance effect, multi-directional air outlet can be achieved, which can meet the diverse needs of users and solve the problem that the existing ventilation equipment cannot simultaneously take into account the aesthetic appearance and multi-directional air outlet of the air outlet 2.

[0094] The present embodiment also proposes that the grille frame 31 and the grille sheet 32 ​​are connected via a linkage assembly 4; under the action of the linkage assembly 4, when the grille frame 31 rotates, the grille sheet 32 ​​also rotates; the structure is simple and occupies little space.

[0095] Further, the first rotating mechanism includes a grille frame shaft 316; the grille frame 31 is rotatably disposed between the first air duct section 11 and the second air duct section 12 via the grille frame shaft 316, and the grille frame 31 can rotate synchronously with the grille frame shaft 316; the second rotating mechanism includes a grille sheet shaft 321; the grille sheet 32 ​​is rotatably disposed on the grille frame 31 via the grille sheet shaft 321, and the grille sheet 32 ​​can rotate synchronously with the grille sheet shaft 321;

[0096] The linkage assembly 4 is arranged in the air outlet 1 and located on the outer side of the grille frame 31. The linkage assembly 4 includes a first gear 41 and a first rack 42 that mesh with each other and a second gear 43 and a second rack 44 that mesh with each other. The first gear 41 is fixedly arranged and the first gear 41 and the grille frame shaft 316 are coaxially arranged. Specifically, the first gear 41 is formed with a gear hole 411, and the gear hole 411 is arranged around the outer peripheral side of the grille frame shaft 316, so that the grille frame shaft 316 can rotate relative to the first gear 41.

[0097] The grille frame shaft 316 can rotate relative to the first gear 41, and the first rack 42 and the second rack 44 are integrally formed or fixedly connected; the first rack 42 and the second rack 44 can rotate synchronously with the grille frame 31 and can slide relative to the grille frame 31; there are multiple second gears 43, and the multiple second gears 43 correspond to the multiple grille sheet shafts 321 one by one and are coaxially fixedly connected; when the second gear 43 rotates, the grille sheet shaft 321 can rotate with the corresponding grille sheet 32, so that the inclination angle of the grille sheet 32 ​​relative to the grille frame 31 changes;

[0098] When the grille frame shaft 316 is controlled to rotate, the grille frame 31 rotates, the first rack 42 and the second rack 44 rotate synchronously with the grille frame 31, the first gear 41 causes the first rack 42 and the second rack 44 to slide relative to the grille frame 31, the second gear 43 rotates, and then the grille sheet shaft 321 rotates with the corresponding grille sheet 32;

[0099] That is, when the grille frame 31 rotates counterclockwise, the first gear 41 rotates clockwise relative to the grille frame 31, and the first rack 42 meshing with the first gear 41 moves upward relative to the grille frame 31, and then the second rack 44 rotates the second gear 43 and the grille sheet 32 ​​clockwise; when the grille frame 31 rotates clockwise, the first gear 41 rotates counterclockwise relative to the grille frame 31, and the first rack 42 meshing with the first gear 41 moves downward relative to the grille frame 31, and then the second rack 44 rotates the second gear 43 and the grille sheet 32 ​​counterclockwise.

[0100] Specifically, Figure 4b The middle grille frame 31 is in the first position, Figure 6 The middle grille frame 31 is in the third position. Figure 5bThe middle grille frame 31 is in the second position; when the grille frame 31 needs to be moved from the first position to the second position, the grille frame 31 is rotated clockwise, the first gear 41 rotates counterclockwise relative to the grille frame 31, the first rack 42 meshing with the first gear 41 moves from the second grille frame 312 to the first grille frame 311 relative to the grille frame 31, the second rack 44 drives the second gear 43 and the grille pieces 32 to rotate counterclockwise, and then the multiple grille pieces 32 close the frame vents 315;

[0101] When the grille frame 31 needs to be moved from the second position to the first position, the grille frame 31 is rotated counterclockwise, the first gear 41 rotates clockwise relative to the grille frame 31, the first rack 42 meshing with the first gear 41 moves from the first grille frame 311 to the second grille frame 312 relative to the grille frame 31, the second rack 44 drives the second gear 43 and the grille pieces 32 to rotate clockwise, and then the multiple grille pieces 32 open the frame vents 315;

[0102] Further, the side wall of the air outlet duct 1 further includes a left duct wall 131 and a right duct wall 132 which are arranged opposite to each other on the left and right sides. The air outlet end of the left duct wall 131, the upper wall 111 of the first duct section, the air outlet end of the right duct wall 132 and the lower wall 112 of the first duct section are arranged to form a first duct section 11; the air inlet end of the left duct wall 131, the front wall 121 of the second duct section, the air inlet end of the right duct wall 132 and the rear wall 122 of the second duct section are arranged to form a second duct section 12;

[0103] The first grille frame 311 is provided with a grille frame shaft 316, which is rotatably arranged on the left wall 131 and the right wall 132 of the air duct; specifically, the left wall 131 and the right wall 132 of the air duct are both formed with grille frame shaft holes, one end of the grille frame shaft 316 is rotatably arranged in the grille frame shaft hole of the left wall 131 of the air duct, and the other end of the grille frame shaft 316 is rotatably arranged in the grille frame shaft hole of the right wall 132 of the air duct; preferably, the grille frame shaft 316 is integrally formed on the first grille frame 311;

[0104] The grille frame 31 further includes a third grille frame 313 and a fourth grille frame 314 which are arranged opposite to each other. The third grille frame 313 is arranged on the same side as the left wall 131 of the air duct, and the fourth grille frame 314 is arranged on the same side as the right wall 132 of the air duct.

[0105] A grille sheet shaft 321 is provided on the grille sheet 32, and the grille sheet shaft 321 is rotatably arranged on the third grille frame 313 and the fourth grille frame 314; specifically, the third grille frame 313 and the fourth grille frame 314 are both connected between the first grille frame 311 and the second grille frame 312; the first grille frame 311, the third grille frame 313, the second grille frame 312 and the fourth grille frame 314 are sequentially connected and arranged in a circle to form a frame vent 315; the length direction of the grille sheet 32 ​​is consistent with the left-right direction of the grille frame 31, and the two ends of the grille sheet 32 ​​in the length direction are respectively formed or arranged with grille sheet shafts 321; the third grille frame 313 and the fourth grille frame 314 are both formed with grille sheet shaft holes, the grille sheet shaft 321 at one end of the grille sheet 32 ​​is rotatably arranged in the grille sheet shaft hole of the third grille frame 313, and the grille sheet shaft 321 at the other end of the grille sheet 32 ​​is rotatably arranged in the grille sheet shaft hole of the fourth grille frame 314;

[0106] Further, the first gear 41 is fixedly disposed between the left wall 131 of the air duct and the third grid frame 313, and the second rack 44 is slidably disposed on the third grid frame 313; specifically, when the first gear 41 is fixedly disposed between the left wall 131 of the air duct and the third grid frame 313, the first gear 41 is fixedly disposed on the left wall 131 of the air duct, or the first gear 41 is fixedly disposed on the left end of at least one of the first air duct segment upper wall 111, the first air duct segment lower wall 112, the second air duct segment front wall 121, and the second air duct segment rear wall 122; and / or,

[0107] The first gear 41 is fixedly disposed between the right wall 132 of the air duct and the fourth grid frame 314, and the second rack 44 is slidably disposed on the fourth grid frame 314; specifically, when the first gear 41 is fixedly disposed between the right wall 132 of the air duct and the fourth grid frame 314, the first gear 41 is fixedly disposed on the right wall 132 of the air duct, or the first gear 41 is fixedly disposed on the right end of at least one of the upper wall 111 of the first air duct section, the lower wall 112 of the first air duct section, the front wall 121 of the second air duct section, and the rear wall 122 of the second air duct section.

[0108] It should be noted that the linkage component 4 may be provided with one or two:

[0109] ① When the linkage assembly 4 is provided with one, the first gear 41, the first rack 42, the second gear 43 and the second rack 44 are located on the same side of the outer side of the grille frame 31; the first gear 41 is fixedly arranged on the left wall 131 of the air duct or the first gear 41 is fixedly arranged between the left wall 131 of the air duct and the third grille frame 313, the first rack 42, the second gear 43 and the second rack 44 are arranged between the left wall 131 of the air duct and the third grille frame 313, the second rack 44 is slidably arranged on the third grille frame 313, and the second gear 43 is fixedly connected to the left end of the grille sheet shaft 321; or,

[0110] The first gear 41 is fixedly arranged on the right wall 132 of the air duct or the first gear 41 is fixedly arranged between the right wall 132 of the air duct and the fourth grid frame 314, the first rack 42, the second gear 43 and the second rack 44 are arranged between the right wall 132 of the air duct and the fourth grid frame 314, the second rack 44 is slidably arranged on the fourth grid frame 314, and the second gear 43 is fixedly connected to the right end of the grid sheet shaft 321;

[0111] ② When there are two linkage components 4, the two linkage components 4 are respectively arranged on the left and right sides of the outer side of the grille frame 31; the two linkage components 4 include a left linkage component and a right linkage component, the left linkage component is arranged on the left side of the outer side of the grille frame 31, and the right linkage component is arranged on the right side of the outer side of the grille frame 31;

[0112] In the left linkage assembly, the first gear 41 is fixedly arranged on the left wall 131 of the air duct or the first gear 41 is fixedly arranged between the left wall 131 of the air duct and the third grid frame 313, the first rack 42, the second gear 43 and the second rack 44 are arranged between the left wall 131 of the air duct and the third grid frame 313, the second rack 44 is slidably arranged on the third grid frame 313, and the second gear 43 is fixedly connected to the left end of the grid sheet shaft 321;

[0113] In the right linkage assembly, the first gear 41 is fixedly arranged on the right wall 132 of the air duct or the first gear 41 is fixedly arranged between the left wall 131 of the air duct and the third grid frame 313, the first rack 42, the second gear 43 and the second rack 44 are arranged between the right wall 132 of the air duct and the fourth grid frame 314, the second rack 44 is slidably arranged on the fourth grid frame 314, and the second gear 43 is fixedly connected to the right end of the grid sheet shaft 321.

[0114] In this embodiment, it is also proposed that when the grille frame 31 is in the first position, the inclination angle of the main surface of the grille vane 32 relative to the vertical plane is α; when the air outlet 2 is formed at the upper end of the housing wall, α satisfies: 10° < α < 170° and / or α > arctan(a / b), and the air passing through the grille vane 32 can flow obliquely upward to achieve the air pressure effect; when the air outlet 2 is formed at the lower end of the housing wall, α satisfies: 90° < α < 170° and / or α > arctan(a / b), and the air passing through the grille vane 32 can flow obliquely downward; when α = 90°, the grille vane 32 rectifies the air, making the air velocity distribution more uniform; keeping α within a certain range increases the air outlet duct 1 and reduces the air outlet resistance; when α < arctan(a / b), the air will directly impact the upper edge 21 of the air outlet 2 after being guided by the grille vane 32, affecting the air lifting effect and causing air volume loss;

[0115] Wherein, a is the horizontal distance between one end of the grille vane 32 close to the air outlet 2 and the upper edge 21 of the air outlet 2, and b is the vertical distance between the top of the second grille vane 32 from top to bottom and the upper edge 21 of the air outlet 2.

[0116] Further, when the grille frame 31 is in the second position, a plurality of grille vanes 32 close the frame ventilation opening 315, then the sum of the widths of the plurality of grille vanes 32 is equal to the width of the grille frame 31; the width of the grille frame 31 is L, the thickness of the grille frame 31 is D, the number of grille vanes 32 is n, and D satisfies: 20mm < D ≤ 40mm, and L, D, α and n satisfy: L = D * sinα / n;

[0117] If D is too small, the extension length of the frame ventilation opening 315 is small, and it cannot effectively guide the air; if D is too large, it will occupy the internal space of the air outlet duct 1, reduce the cross-sectional area of the air outlet duct 1, and cause an increase in air volume loss; taking the air outlet 2 located at the lower end of the housing wall as an example, a flow field simulation is carried out for different D size schemes, and Table 1 can be obtained;

[0118] Table 1 Landing distance of air at different D sizes

[0119] Dimension D(mm) 10 20 30 40 50 80 Air landing distance 0.5m 2m 3.3m 3.4m 3.45m 3.5m

[0120] According to Table 1, when D is less than 20mm, due to the too small extension length of the frame ventilation opening 315, the air quickly lands after passing through the grille vane 32, and the landing distance is short, and the grille guiding effect is not good; the larger D is, the better the guiding effect is. However, after D is greater than 40mm, increasing D does not significantly improve the air guiding effect. Therefore, in practice, D should be greater than 30mm, and it is recommended to be designed as 40mm when space permits.

[0121] The present embodiment also proposes that, taking the air outlet 2 located at the lower end of the shell wall as an example, the air flow rate in the air outlet 2 is unevenly distributed, the air flow rate in the upper half of the air outlet 2 is low, and the air flow rate in the lower half is high; that is, when the grille frame 31 is in the first position, the air has different flow rates when flowing through different positions of the frame vent 315; the distance between two adjacent grille sheets 32 is designed as follows: the greater the air flow rate, the smaller the distance between the two adjacent grille sheets 32; specifically, the distance between the two adjacent grille sheets 32 is small at the position where the air flow rate is large; the distance between the two adjacent grille sheets 32 is large at the position where the air flow rate is small. The spacing between two adjacent grille sheets 32 is designed according to the flow field distribution of the air outlet 2, so that the air outlet of the air outlet 2 is more uniform; therefore, the spacing between two adjacent grille sheets 32 can be optimized to be arranged in a "sparse on top and dense on the bottom" manner; the arrangement density of the grille sheets 32 in the upper part is small, which can reduce the air resistance to the air outlet 2 and reduce the air velocity attenuation; the arrangement density of the grille sheets 32 in the lower part is large, which can break up the air with a higher velocity, making the air velocity of the air outlet 2 more uniform and avoiding the high air velocity in the lower part directly blowing to the ground. Therefore, the spacing between two adjacent grille sheets 32 can be designed in combination with the flow field simulation results of the air outlet 2. At the location of high air velocity, the spacing between two adjacent grille sheets 32 is designed as a small spacing; at the location of low air velocity, the spacing between two adjacent grille sheets 32 is designed as a large spacing;

[0122] When the grille frame 31 is in the first position, the air velocity flowing through the frame vent 315 gradually increases from the upper end of the frame vent 315 to the lower end of the frame vent 315, and the distance between two adjacent grille sheets 32 gradually decreases;

[0123] Furthermore, in order to ensure the diversion effect and minimize wind resistance, the spacing between two adjacent grille sheets 32 should be within the range of 10mm to 50mm; at the position where the air flow rate is greater than the preset flow rate, the spacing between two adjacent grille sheets 32 is d1, and d1 satisfies: 10mm≤d1<20mm, d1<4*D*sinα; at the position where the air flow rate is less than or equal to the preset flow rate, the spacing between two adjacent grille sheets 32 is d2, and d2 satisfies: 20mm≤d2≤50mm, d2≤4*D*sinα; avoid blowing air directly out from between the grille sheets 32 without diversion.

[0124] In addition, the distance between the first grille frame 311 and the rear wall 122 of the second air duct section is c, and c satisfies: c≥50mm; taking the air outlet 2 located at the lower end of the shell wall as an example, the air in the second air duct section 12 enters the first air duct section 11 and is then guided by the guide mechanism, which has the best effect.

[0125] Example 3

[0126] Different from the second embodiment, the grille frame 31 can be controlled to rotate independently, the plurality of grille sheets 32 can be controlled to rotate simultaneously or each grille sheet 32 ​​can be controlled to rotate independently;

[0127] Taking the example that the grille frame 31 can be controlled to rotate independently and the multiple grille sheets 32 can be controlled to rotate simultaneously, the grille frame 31 is rotatably arranged between the first air duct section 11 and the second air duct section 12 through the grille frame shaft 316, and the grille frame 31 can rotate synchronously with the grille frame shaft 316; the air guide mechanism includes a second drive motor, and the second drive motor is drivingly connected to the grille frame shaft 316; when the second drive motor is running, the grille frame 31 can rotate synchronously with the grille frame shaft 316; the second drive motor can be arranged in the air outlet 1 or outside the air outlet 1;

[0128] The grille sheet 32 ​​is rotatably arranged on the third grille frame 313 and the fourth grille frame 314 through the grille sheet shaft 321, and the grille sheet 32 ​​can rotate synchronously with the grille sheet shaft 321; the diversion mechanism includes a third driving motor, a third gear and a third rack, the third gear is rotatably arranged on the third grille frame 313 and / or the fourth grille frame 314, a plurality of third gears are provided, and the plurality of third gears and the plurality of grille sheet shafts 321 correspond to each other one by one and are coaxially fixedly connected; the third rack is slidably arranged on the third grille frame 313 and / or the fourth grille frame 314, the third rack and each third gear are arranged on the same side of the grille frame 31 and the third rack and each third gear are meshed; the third driving motor is drivingly connected to any third gear; when the third driving motor is running, the third gear connected to the third driving motor rotates, and then the third rack slides, so that the other third gears rotate, and then the grille sheet shaft 321 rotates with the corresponding grille sheet 32.

[0129] Taking the example that the grille frame 31 can be controlled to rotate independently and each grille piece 32 can be controlled to rotate independently, the grille frame 31 is rotatably arranged between the first air duct section 11 and the second air duct section 12 through the grille frame shaft 316, and the grille frame 31 can rotate synchronously with the grille frame shaft 316; the air guide mechanism includes a second drive motor, and the second drive motor is drivingly connected to the grille frame shaft 316; when the second drive motor is running, the grille frame 31 can rotate synchronously with the grille frame shaft 316; the second drive motor can be arranged in the air outlet 1 or outside the air outlet 1;

[0130] The grille sheet 32 ​​is rotatably arranged on the third grille frame 313 and the fourth grille frame 314 through the grille sheet shaft 321, and the grille sheet 32 ​​can rotate synchronously with the grille sheet shaft 321; the guide mechanism includes a fourth drive motor, and the fourth drive motor is arranged on the third grille frame 313 or the fourth grille frame 314. There are multiple fourth drive motors, and the multiple fourth drive motors and the multiple grille sheet shafts 321 correspond to each other one by one and are drive-connected; when the fourth drive motor is running, the grille sheet shaft 321 rotates with the corresponding grille sheet 32.

[0131] Example 4

[0132] This embodiment provides a cabinet air conditioner, including an indoor unit, and the indoor unit includes the ventilation device described in any one of Embodiments 1 to 3.

[0133] Taking the air outlet 2 located at the lower end of the shell wall as an example, in order to achieve a better ground-close effect of the hot air sent out from the air outlet 2 of the indoor unit during heating, the height of the air outlet 2 of the indoor unit is generally designed to be low; but in the cooling state, cold air is sent out from the air outlet 2 of the indoor unit. Since the density of cold air is greater than that of air at normal temperature, the cold air sinks and the ground-close effect is more obvious; in this way, the cold air can only be sent to the lower space of the room, resulting in uneven heat exchange; the air from the air outlet 2 can be effectively lifted when passing through the inclined grille 32. At the same time, users can also adjust the grille 32 to a suitable position according to their needs to meet the needs of cold air / hot air blowing directly on people and achieve rapid cooling / heating.

[0134] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A ventilation device, characterized in that: An air outlet duct (1) is formed inside the ventilation device, and an air outlet (2) connected to the air outlet duct (1) is formed on the shell wall of the ventilation device; a flow guiding mechanism is arranged inside the air outlet duct (1), and the flow guiding mechanism comprises: A grille frame (31) is rotatably disposed in the air outlet duct (1) and the grille frame (31) is formed with a frame vent (315); the grille frame (31) is provided with a first position and a second position; A grille sheet (32), a plurality of which are provided, and the plurality of grille sheets (32) are arranged in the frame vent (315) at intervals; When the grille frame (31) is in the first position, the grille frame (31) is disposed as a whole close to the air outlet (2); a plurality of the grille sheets (32) open the frame vent (315), and the air in the air outlet duct (1) can flow toward the air outlet (2) through the gap between two adjacent grille sheets (32); When the grille frame (31) is in the second position, the grille frame (31) is disposed as a whole close to a side wall of the air outlet duct (1) and is hidden above or below the air outlet (2); the air in the air outlet duct (1) does not flow through the frame vent (315) but directly flows to the air outlet (2).

2. The ventilation device according to claim 1, characterized in that The air outlet duct (1) comprises a first air duct section (11) arranged close to the air outlet (2) and a second air duct section (12) arranged away from the air outlet (2), wherein the second air duct section (12) is located above or below the first air duct section (11); the air outlet (2), the first air duct section (11) and the second air duct section (12) are connected in sequence; and the grille frame (31) is rotatably arranged between the first air duct section (11) and the second air duct section (12); When the grille frame (31) is in the first position, the grille frame (31) is located in the first air duct section (11); When the grille frame (31) is in the second position, the grille frame (31) is located in the second air duct section (12).

3. The ventilation device according to claim 2, characterized in that The side wall of the air outlet duct (1) comprises a first air duct section upper wall (111), a first air duct section lower wall (112), a second air duct section front wall (121) and a second air duct section rear wall (122); the first air duct section upper wall (111) and the first air duct section lower wall (112) are arranged opposite to each other vertically, and the second air duct section front wall (121) and the second air duct section rear wall (122) are arranged opposite to each other frontally; the second air duct section front wall (121) and the first air duct section upper wall (111) are connected, and an escape space (123) is formed at one end of the second air duct section front wall (121) close to the first air duct section upper wall (111); the second air duct section rear wall (122) and the first air duct section lower wall (112) are connected; The grille frame (31) comprises a first grille frame (311) and a second grille frame (312) which are arranged opposite to each other; the first grille frame (311) is rotatably arranged near the connection between the second air duct section front wall (121) and the first air duct section upper wall (111); When the grille frame (31) is in the first position, the second grille frame (312) is arranged close to the lower wall (112) of the first air duct section; When the grille frame (31) is in the second position, the grille frame (31) is located in the avoidance space (123).

4. The ventilation device according to claim 3, characterized in that The grille frame (31) is further provided with a third position, and the grille frame (31) passes through the third position when rotating from the first position to the second position; When the grille frame (31) is in the third position, the grille frame (31) is entirely located between the first air duct section (11) and the second air duct section (12).

5. The ventilation device according to claim 4, characterized in that The plurality of grille sheets (32) are rotatably arranged in the frame vent (315), and the air flow directions of the plurality of grille sheets (32) are adjustable; When the grille frame (31) is in the first position, the flow guide direction of the grille sheet (32) can be adjusted by controlling the grille sheet (32) to rotate relative to the grille frame (31); When the grille frame (31) is in the second position, the plurality of grille sheets (32) can close the frame vent (315).

6. The ventilation device according to claim 5, characterized in that The grille frame (31) and the grille sheet (32) are connected via a linkage assembly (4); under the action of the linkage assembly (4), when the grille frame (31) rotates, the grille sheet (32) also rotates.

7. The ventilation device according to claim 6, characterized in that The grille frame (31) is rotatably arranged between the first air duct section (11) and the second air duct section (12) via a grille frame shaft (316), and the grille frame (31) can rotate synchronously with the grille frame shaft (316); the grille sheet (32) is rotatably arranged on the grille frame (31) via a grille sheet shaft (321), and the grille sheet (32) can rotate synchronously with the grille sheet shaft (321); The linkage assembly (4) is arranged in the air outlet duct (1) and is located outside the grille frame (31). The linkage assembly (4) comprises a first gear (41) and a first rack (42) meshing with each other and a second gear (43) and a second rack (44) meshing with each other. The first gear (41) is fixedly arranged and the first gear (41) and the grille frame shaft (316) are coaxially arranged. The grille frame shaft (316) can rotate relative to the first gear (41). The first rack (42) and the second rack (44) are integrally formed or fixedly connected. The first rack (42) and the second rack (44) can both rotate synchronously with the grille frame (31) and can slide relative to the grille frame (31). A plurality of second gears (43) are provided, and the plurality of second gears (43) and the plurality of grille sheet shafts (321) correspond to each other one by one and are coaxially fixedly connected. When the grille frame shaft (316) is controlled to rotate, the grille frame (31) rotates, the first rack (42) and the second rack (44) rotate synchronously with the grille frame (31), the first gear (41) causes the first rack (42) and the second rack (44) to slide relative to the grille frame (31), the second gear (43) rotates, and then the grille sheet shaft (321) rotates with the corresponding grille sheet (32).

8. The ventilation device according to claim 7, characterized in that The side walls of the air outlet duct (1) further include an air duct left wall (131) and an air duct right wall (132) which are arranged opposite to each other on the left and right sides; the air outlet end of the air duct left wall (131), the upper wall (111) of the first air duct section, the air outlet end of the air duct right wall (132) and the lower wall (112) of the first air duct section are arranged to form the first air duct section (11); the air inlet end of the air duct left wall (131), the front wall (121) of the second air duct section, the air inlet end of the air duct right wall (132) and the rear wall (122) of the second air duct section are arranged to form the second air duct section (12); The first grille frame (311) is provided with a grille frame shaft (316), and the grille frame shaft (316) is rotatably arranged on the left wall (131) and the right wall (132) of the air duct; The grille frame (31) further comprises a third grille frame (313) and a fourth grille frame (314) which are arranged opposite to each other on the left and right sides, wherein the third grille frame (313) is arranged corresponding to the same side of the left wall (131) of the air duct, and the fourth grille frame (314) is arranged corresponding to the same side of the right wall (132) of the air duct; The grille sheet (32) is provided with the grille sheet shaft (321), and the grille sheet shaft (321) is rotatably arranged on the third grille frame (313) and the fourth grille frame (314); The first gear (41), the first rack (42), the second gear (43) and the second rack (44) are located on the same side of the outer side of the grille frame (31); The first gear (41) is fixedly arranged between the left wall (131) of the air duct and the third grille frame (313), and the second rack (44) is slidably arranged on the third grille frame (313); and / or, The first gear (41) is fixedly arranged between the right wall (132) of the air duct and the fourth grid frame (314), and the second rack (44) is slidably arranged on the fourth grid frame (314).

9. The ventilation device according to claim 7, characterized in that The first gear (41) is formed with a gear hole (411), and the gear hole (411) is arranged around the outer peripheral side of the grille frame shaft (316), so that the grille frame shaft (316) can rotate relative to the first gear (41).

10. The ventilation device according to claim 1, characterized in that When the grille frame (31) is in the first position, the inclination angle of the main surface of the grille piece (32) with respect to the vertical plane is α; when the air outlet (2) is formed at the upper end of the housing wall, α satisfies: 10° < α < 170° and / or α > arctan(a / b); when the air outlet (2) is formed at the lower end of the housing wall, α satisfies: 90° < α < 170° and / or α > arctan(a / b). Wherein, a is the horizontal distance between the end of the grille piece (32) close to the air outlet (2) and the upper edge (21) of the air outlet (2), and b is the vertical distance between the top of the second grille piece (32) from top to bottom and the upper edge (21) of the air outlet (2).

11. The ventilation device according to claim 10, characterized in that The width of the grille frame (31) is L, the thickness of the grille frame (31) is D, the number of the grille pieces (32) is n, D satisfies: 20mm < D ≤ 40mm, and L, D, α and n satisfy: L = D * sinα / n.

12. The ventilation device according to claim 11, characterized in that When the grille frame (31) is in the first position, from the upper end to the lower end of the frame ventilation opening (315), the air flow velocity flowing through the frame ventilation opening (315) gradually increases, and the distance between adjacent two grille pieces (32) gradually decreases.

13. The ventilation device according to claim 12, characterized in that At the position where the air flow velocity is greater than the preset flow velocity, the distance between adjacent two grille pieces (32) is d1, and d1 satisfies: 10mm ≤ d1 < 20mm, d1 < 4 * D * sinα. At the position where the air flow velocity is less than or equal to the preset flow velocity, the distance between adjacent two grille pieces (32) is d2, and d2 satisfies: 20mm ≤ d2 ≤ 50mm, d2 ≤ 4 * D * sinα.

14. The ventilation device according to claim 3, characterized in that The distance between the first grille frame (311) and the rear wall (122) of the second air duct section is c, and c satisfies: c ≥ 50mm.

15. The ventilation device according to claim 5, characterized in that The grille frame (31) can be controlled to rotate independently, and multiple grille pieces (32) can be controlled to rotate simultaneously or each grille piece (32) can be controlled to rotate independently.

16. A cabinet air conditioner, characterized in that: Comprising the ventilation device according to any one of claims 1 to 15.

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