Air conditioner air intake structure, air conditioner indoor unit, air conditioner

Abstract

The present invention provides an air-conditioning air-intake structure, an air-conditioning indoor unit, and an air-conditioning device, wherein an air-conditioning air-intake structure includes an air-intake panel and a centrifugal fan located inside the air-intake panel, the centrifugal fan having an air-intake inner cavity corresponding to the air inlet of the air-intake panel, and also including an ultraviolet irradiation device, the ultraviolet irradiation device having an ultraviolet light emitter, and the ultraviolet light emitter is located in the air-intake inner cavity. According to an air-conditioning air-intake structure, an air-conditioning indoor unit, and an air-conditioning device of the present invention, the ultraviolet light emitter is arranged in the air-intake inner cavity of the centrifugal fan, can fully contact with the air-intake airflow, realizes a large range of radiation to the air-intake airflow, thereby achieving a better sterilization and disinfection effect.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioning, and in particular relates to an air-conditioning air inlet structure, an air-conditioning indoor unit, and an air-conditioning. Background Art

[0002] As people's living standards improve, consumers pay more attention to indoor air quality, and the demand for air conditioners with virus and bacteria killing functions increases, which is also one of the functions that air conditioners must have in the future. Since viruses and bacteria are composed of proteins, the current mainstream methods are high temperature or ultraviolet irradiation. For air conditioners, cooling is required in summer, so ultraviolet irradiation has become the main means of sterilizing the airflow of air conditioners. The inventors have found that in current air-conditioning products, one way is to set the ultraviolet irradiation device at the air outlet of the air-conditioning equipment (or air purification equipment). In this way, when the ultraviolet lamp is turned on when the air-conditioning is running at night, in order to prevent the user from seeing the light source and affecting sleep, additional devices such as sunshades need to be added, which increases the product cost; one way is to set the ultraviolet irradiation device under or near the evaporator. This setting position will easily form condensation water on the ultraviolet irradiation device when the air conditioner is cooling, thereby posing an electrical safety hazard; one way is to set the ultraviolet irradiation device in the air duct volute, but setting it here brings inconvenience to the maintenance of the ultraviolet irradiation device; and setting the ultraviolet irradiation device at the air inlet of the air conditioner can effectively overcome the shortcomings of the aforementioned prior art, but most of the current ultraviolet irradiation devices are only set on the air inlet grille or filter net, and the effective coverage range of ultraviolet irradiation in this arrangement is small, resulting in unsatisfactory actual effective sterilization or virus effect. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide an air-conditioning air intake structure, an air-conditioner indoor unit, and an air-conditioner, wherein the ultraviolet light emitter is arranged in the inner cavity on the air-inlet side of the centrifugal fan, so as to fully contact the incoming air flow and realize a large-scale radiation of the incoming air flow, thereby achieving a better sterilization and disinfection effect.

[0004] In order to solve the above problems, the present invention provides an air-conditioning air intake structure, including an air intake panel and a centrifugal fan located on the inner side of the air intake panel, the centrifugal fan having an air intake cavity corresponding to the air inlet of the air intake panel, and also including an ultraviolet irradiation device, the ultraviolet irradiation device having an ultraviolet light emitter, and the ultraviolet light emitter is located in the air intake cavity.

[0005] Optionally, there are at least three ultraviolet light emitters, and the at least three ultraviolet light emitters are evenly spaced along the circumference of the air inlet inner cavity.

[0006] Optionally, the length extension direction of the ultraviolet light emitter is parallel to the axial direction of the centrifugal fan.

[0007] Optionally, the centrifugal fan includes a roulette body connected to a driving motor and a plurality of blades connected to the roulette body, the roulette body is provided with a reflective layer on a side facing the ultraviolet irradiation device, and / or the blades are provided with a reflective layer on a side facing the ultraviolet irradiation device.

[0008] Optionally, the minimum distance between the outer peripheral wall of the ultraviolet light emitter and the inner side of the blade is d, and d≥5mm.

[0009] Optionally, a guide ring is provided on the air inlet side of the centrifugal fan, and the ultraviolet irradiation device includes a connector at one end of the ultraviolet light emitter, and the ultraviolet irradiation device is detachably connected to the guide ring via the connector.

[0010] Optionally, the guide ring has a mounting seat extending radially inward, and the connector is threadedly connected to the mounting seat.

[0011] Optionally, a flow hole is configured on the mounting seat, and the flow hole penetrates through two sides of the mounting seat along the axial direction of the guide ring.

[0012] The present invention also provides an air conditioner indoor unit, comprising an air conditioner air inlet structure, wherein the air conditioner air inlet structure is the air conditioner air inlet structure mentioned above.

[0013] The present invention also provides an air conditioner, comprising an indoor unit, wherein the indoor unit is the above-mentioned air conditioner indoor unit.

[0014] The present invention provides an air-conditioning air-intake structure, an air-conditioner indoor unit, and an air-conditioner, wherein the ultraviolet light emitter is arranged in the air-intake inner cavity. Since the air-intake airflow of the centrifugal fan will be concentrated in the air-intake inner cavity, a large-scale radiation of the airflow entering the air-intake inner cavity can be achieved by arranging a relatively small number of ultraviolet light emitters, that is, it can be ensured that the ultraviolet rays are in full contact with the air-intake airflow, thereby achieving a better sterilization and disinfection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an air-conditioning air inlet structure according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of the guide ring;

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of a medium ultraviolet irradiation device;

[0018] Figure 4 A partial structural schematic diagram of an air conditioner indoor unit according to another embodiment of the present invention (the air inlet panel and filter are omitted);

[0019] Figure 5 for Figure 4 Schematic diagram of the internal structure from another perspective (side view section).

[0020] The reference numerals are:

[0021] 1. Air inlet panel; 11. Air inlet; 2. Centrifugal fan; 21. Air inlet cavity; 22. Roulette body; 23. Blades; 24. Driving motor; 3. Ultraviolet irradiation device; 31. Ultraviolet light emitter; 32. Connector; 4. Guide ring; 41. Mounting seat; 42. Flow hole; 5. Filter. DETAILED DESCRIPTION

[0022] See also Figures 1 to 5 As shown, according to an embodiment of the present invention, an air-conditioning air-intake structure is provided, comprising an air-intake panel 1 and a centrifugal fan 2 located inside the air-intake panel 1, wherein the centrifugal fan 2 has an air-intake inner cavity 21 corresponding to the air inlet 11 of the air-intake panel 1, and further comprising an ultraviolet irradiation device 3, wherein the ultraviolet irradiation device 3 has an ultraviolet light emitter 31, wherein the ultraviolet light emitter 31 is located in the air-intake inner cavity 21. It can be understood that, as Figure 1 As shown, the centrifugal fan 2 includes a roulette body 22 for connecting to a driving motor 24 and a plurality of blades 23 connected to the roulette body 22. The roulette body 22 is designed as a boss structure protruding toward its air inlet side. The leeward side of the boss structure forms a motor installation accommodating cavity, and the windward side of the boss structure and the inner side of the plurality of blades 23 together form the air inlet cavity 21, that is, the air inlet of the centrifugal fan 2 will completely enter the centrifugal fan 2 through the air inlet cavity 21. In this technical solution, the ultraviolet light emitter 31 is arranged in the air inlet cavity 21. Since the air inlet airflow of the centrifugal fan 2 will be concentrated in the air inlet cavity 21, a relatively small number of ultraviolet light emitters 31 can be arranged to achieve a large range of radiation of the airflow entering the air inlet cavity 21, that is, it can ensure that the ultraviolet light is fully in contact with the air inlet airflow, so that its sterilization and disinfection effect is better.

[0023] It can be understood that the air inlet cavity 21 forms an annular airflow channel in appearance. At this time, optionally, the ultraviolet light emitters 31 have at least three (for example, when there are three, the interval angle between them is 120°), for example, Figure 2Specifically, four (the interval angle between each other is 90°), at least three of the ultraviolet light emitters 31 are evenly spaced along the circumference of the air inlet cavity 21, and at least three of the ultraviolet light emitters 31 can theoretically achieve the omnidirectional radiation requirements of the airflow within a 360° annular range. Optionally, the length extension direction of the ultraviolet light emitter 31 is parallel to the axial direction of the centrifugal fan 2, and the length of the ultraviolet light emitter 31 is preferably able to completely cover the axial depth of the air inlet cavity 21, so that the incoming airflow can be radiated for a longer time, which can further improve the sterilization and disinfection effect.

[0024] In some embodiments, a reflective layer is provided on the side of the roulette body 22 facing the ultraviolet irradiation device 3 (not shown in the figure), and / or a reflective layer is provided on the side of the blade 23 facing the ultraviolet irradiation device 3 (not shown in the figure). The reflective layer can be, for example, a stainless steel high-gloss coating layer. By setting the reflective layer, the ultraviolet rays emitted by the ultraviolet irradiation device 3 can be radiated at multiple angles, which is conducive to meeting the all-round radiation requirements of the incoming airflow, and also has an anti-mildew function.

[0025] In some embodiments, the minimum distance between the outer wall of the ultraviolet light emitter 31 and the inner side of the blade 23 is d, d≥5mm, to ensure that there is sufficient spacing between the ultraviolet light emitter 31 and the inner side of the blade 23 to prevent interference between the components (including the volute) in the centrifugal fan 2 and the guide ring 4 described below due to errors in the processing or assembly process.

[0026] In some embodiments, a guide ring 4 is provided on the air inlet side of the centrifugal fan 2, and the ultraviolet irradiation device 3 includes a connector 32 at one end of the ultraviolet light emitter 31, and the ultraviolet irradiation device 3 is detachably connected to the guide ring 4 through the connector 32. The ultraviolet irradiation device 3 is installed on a fixed component through the connector 32, and there is no need to consider the connection problem of the power cable of the ultraviolet irradiation device 3. Optionally, the guide ring 4 has a mounting seat 41 extending radially inward, and the connector 32 is threadedly connected to the mounting seat 41, for example, a corresponding threaded hole is constructed on the mounting seat 41.

[0027] In some embodiments, a flow hole 42 is also constructed on the mounting seat 41, and the flow hole 42 passes through both sides of the mounting seat 41 along the axial direction of the guide ring 4. The size of the flow hole 42 should be as large as possible while ensuring that the mounting seat 41 has the supporting strength for the ultraviolet irradiation device 3.

[0028] In order to filter impurities and debris in the incoming air flow, in some embodiments, a filter screen 5 is further provided between the air inlet 11 and the guide ring 4 .

[0029] According to an embodiment of the present invention, there is also provided an air conditioner indoor unit, comprising an air conditioner air inlet structure, wherein the air conditioner air inlet structure is the air conditioner air inlet structure described above, and the air conditioner indoor unit is, for example, Figure 4 Or the cabinet shown in 5, which is provided with an air outlet and a corresponding evaporator. The airflow at the air inlet 11 is sterilized and disinfected by the ultraviolet irradiation device 2 in the air inlet inner cavity 11, enters the air outlet duct through the air outlet of the centrifugal fan 2, and flows out from the air outlet into the room after heat exchange at the evaporator.

[0030] According to an embodiment of the present invention, there is further provided an air conditioner, comprising an indoor unit, wherein the indoor unit is the above-mentioned indoor unit of the air conditioner.

[0031] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. An air-conditioning air inlet structure, characterized in that: The invention comprises an air inlet panel (1) and a centrifugal fan (2) located inside the air inlet panel (1), wherein the centrifugal fan (2) has an air inlet inner cavity (21) corresponding to the air inlet port (11) of the air inlet panel (1), and further comprises an ultraviolet irradiation device (3), wherein the ultraviolet irradiation device (3) has an ultraviolet light emitter (31), wherein the ultraviolet light emitter (31) is located inside the air inlet inner cavity (21); the ultraviolet light emitters (31) are at least three, and the at least three ultraviolet light emitters (31) are evenly spaced along the circumference of the air inlet inner cavity (21). The centrifugal fan (2) is arranged at intervals; a guide ring (4) is provided on the air inlet side of the centrifugal fan (2); the ultraviolet irradiation device (3) comprises a connector (32) at one end of the ultraviolet luminous body (31); the ultraviolet irradiation device (3) is detachably connected to the guide ring (4) via the connector (32); the guide ring (4) has a mounting seat (41) extending radially inward; the mounting seat (41) is provided with a flow hole (42), and the flow hole (42) penetrates both sides of the mounting seat (41) along the axial direction of the guide ring (4).

2. The air-conditioning air inlet structure according to claim 1, characterized in that: The length extension direction of the ultraviolet light emitter (31) is parallel to the axial direction of the centrifugal fan (2).

3. The air-conditioning air inlet structure according to claim 2, characterized in that: The centrifugal fan (2) comprises a wheel disc body (22) for connecting to a driving motor (24) and a plurality of blades (23) connected to the wheel disc body (22); a reflective layer is provided on a side of the wheel disc body (22) facing the ultraviolet irradiation device (3); and / or a reflective layer is provided on a side of the blades (23) facing the ultraviolet irradiation device (3).

4. The air-conditioning air inlet structure according to claim 3, characterized in that: The minimum distance between the outer peripheral wall of the ultraviolet light emitter (31) and the inner side of the blade (23) is d, and d≥5 mm.

5. The air-conditioning air inlet structure according to claim 1, characterized in that: The connecting head (32) is threadedly connected to the mounting seat (41).

6. An air conditioner indoor unit, comprising an air conditioning air inlet structure, characterized in that: The air conditioning air inlet structure is the air conditioning air inlet structure according to any one of claims 1 to 5.

7. An air conditioner, comprising an indoor unit, characterized in that: The indoor unit is the air conditioner indoor unit according to claim 6.

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