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CN-122015185-A - Indoor unit of air conditioner

CN122015185ACN 122015185 ACN122015185 ACN 122015185ACN-122015185-A

Abstract

The application discloses an air conditioner indoor unit, and belongs to the technical field of air treatment. The air conditioner indoor unit comprises a shell, a heat exchanger and a fan, wherein a first air outlet, a second air outlet, a first air channel and a second air channel are arranged on the shell, a through hole which is communicated with the inside and the outside of the shell is arranged on a volute of the fan, the first air channel is communicated between an air outlet of the volute and the air outlet, the heat exchanger is arranged in the first air channel, the first air channel comprises a first air outlet end corresponding to the first air outlet and a second air outlet end corresponding to the second air outlet, one end of the second air channel, which is communicated with the through hole, extends to the air outlet, the second air channel comprises a first branch runner, a second branch runner, a first circulating groove and a second circulating groove, which are communicated with the air outlet end of the first branch runner and are surrounded on the first air outlet end, and the second circulating groove is communicated with the air outlet end of the second branch runner and is surrounded on the second air outlet end. The indoor unit of the air conditioner can prolong the air supply distance.

Inventors

  • WEI BIN
  • CUI YINHU
  • XU KUN

Assignees

  • 青岛海信日立空调系统有限公司

Dates

Publication Date
20260512
Application Date
20260116

Claims (10)

  1. 1. An air conditioning indoor unit, comprising: the shell is provided with at least two air outlets, wherein the two air outlets are respectively a first air outlet arranged on a first side panel of the shell and a second air outlet arranged on a bottom plate of the shell; The heat exchanger is arranged in the shell; the fan is arranged on the windward side of the heat exchanger and comprises a volute, the volute is provided with an air outlet, and a through hole for communicating the inside and the outside of the volute is formed in the volute; the air inlet end of the air channel main part is connected with the volute corresponding to the through hole, and a main flow channel is formed in the air channel main part; the wind channel forms the piece, locates the lee side of heat exchanger, be equipped with on the wind channel forms the piece: the ventilation cavity penetrates through the air duct forming piece and is communicated between the leeward side of the heat exchanger and the first air outlet; the communication cavity penetrates through the bottom wall of the air duct forming piece corresponding to the second air outlet; the first branch flow passage and the second branch flow passage are respectively communicated with the main flow passage; The first circulation groove is communicated with the air outlet end of the first branch flow passage and surrounds the outside of the ventilation cavity; the second circulation groove is communicated with the air outlet end of the second branch flow passage and surrounds the outside of the communication cavity; When the first air outlet is in an open state and the first branch flow passage is in a communication state, the fan operates to enable air in the volute to be divided into two paths, wherein one path passes through the heat exchanger and flows out of the ventilation cavity; When the second air outlet is in an open state and the second branch flow channel is in a communicating state, the fan operates, so that air in the volute is divided into two paths, one path passes through the heat exchanger and flows out of the communicating cavity, the other path passes through the main flow channel and the second branch flow channel and flows out of the second circulation channel, and the air flowing out of the second circulation channel forms annular package on the air flowing out of the communicating cavity.
  2. 2. The indoor unit of claim 1, wherein the second branching flow path includes a second branching upstream flow path and a second branching downstream flow path; The air duct forming member includes: the air inlet end of the air channel branch part is connected with the air outlet end of the air channel main part, and the air channel branch part is provided with the first branch flow channel and the second branch upstream flow channel; The main body air channel part is connected with the air channel branch part; The ventilation cavity penetrates through the main body air channel part along the direction perpendicular to the first air outlet, the communication cavity penetrates through the bottom wall of the main body air channel part, the first circulation groove is arranged at one end, close to the first air outlet, of the main body air channel part, the second circulation groove is arranged at the bottom of the main body air channel part, and the second branch downstream flow channel is arranged on the side wall of the main body air channel part and is communicated between the second branch upstream flow channel and the second circulation groove.
  3. 3. The indoor unit of claim 2, wherein the duct forming member comprises: A protruding part formed by extending downwards the bottom surface of the main body air channel part; The communication cavity penetrates through the protruding portion, and the second circulation groove is formed by upwards sinking the bottom surface of the protruding portion.
  4. 4. The indoor unit of claim 2, wherein the duct branching portion includes: the air inlet end of the air inlet main part is connected with the air channel main part; the air inlet end of the first branch part is connected with the air outlet end of the air inlet main part, and the air outlet end of the first branch part is connected with the main air channel part corresponding to the first circulation groove; the air inlet end of the second branch part is connected with the air outlet end of the air inlet main part, and the air outlet end of the second branch part is connected with the main air channel part corresponding to the second branch downstream flow channel; The first branch flow passage is arranged on the first branch part, and the second branch upstream flow passage is arranged on the second branch part.
  5. 5. The indoor unit of claim 4, wherein the air inlet main portion is disposed obliquely along a direction from an air inlet end of the air inlet main portion to an air outlet end thereof, the first branch portion is located on an extension line of the air inlet main portion, and the second branch portion extends in a height direction; The included angle alpha between the air duct main part and the air inlet main part is more than or equal to 110 degrees, and the included angle beta between the air inlet main part and the second branch part is more than or equal to 110 degrees.
  6. 6. The indoor unit of claim 2, wherein the duct trunk is disposed above the heat exchanger, and the duct branch portion is connected to an upper end of the main body duct portion; The second branch downstream flow passage includes: a first channel section formed by the downward depression of the upper surface of the main body air channel portion, the upper end of the first channel section being communicated with the lower end of the second branched upstream channel; And the second flow passage section extends along the vertical side wall of the main body air passage part, the upper end of the second flow passage section is communicated with the first flow passage section, and the lower end of the second flow passage section is communicated with the second circulation groove.
  7. 7. The indoor unit of claim 1, wherein a rotatable reversing baffle is provided at a branching position of the main flow passage; The reversing baffle can be switched between a first state and a second state, the reversing baffle shields the second branch flow passage in the first state, so that the main flow passage is communicated with the first branch flow passage, and the reversing baffle shields the first branch flow passage in the second state, so that the main flow passage is communicated with the second branch flow passage.
  8. 8. The indoor unit of any one of claims 1-7, further comprising a curtain assembly movable proximate an inner wall of the floor and an inner wall of the first side panel to selectively block the first air outlet or the second air outlet.
  9. 9. The indoor unit of claim 8, wherein the curtain assembly comprises: the driving shaft is rotatably connected in the shell and is arranged at the corner formed by the first side panel and the bottom plate; A curtain cloth which is wound to one side of the driving shaft, which faces the first side panel, from the bottom of the driving shaft, and is meshed with the driving shaft through a tooth shape so as to drive the curtain cloth to move when the driving shaft rotates, wherein two opposite ends of the curtain cloth are respectively a first end and a second end, and the first end of the curtain cloth is positioned above the second end of the curtain cloth; The upper end of the first elastic piece is fixed relative to the shell, and the lower end of the first elastic piece is connected with the first end of the curtain cloth; the second elastic piece, the second elastic piece keep away from the one end of first side panel is relative the casing is fixed, the second elastic piece be close to the one end of first side panel with the second end of curtain cloth is connected.
  10. 10. An air conditioning indoor unit, comprising: the shell is provided with at least two air outlets, wherein the two air outlets are respectively a first air outlet arranged on a first side panel of the shell and a second air outlet arranged on a bottom plate of the shell; The heat exchanger is arranged in the shell; the fan is arranged on the windward side of the heat exchanger and comprises a volute, the volute is provided with an air outlet, and a through hole for communicating the inside and the outside of the volute is formed in the volute; The heat exchanger is arranged in the first air duct, and the first air duct comprises a first air outlet end corresponding to the first air outlet and a second air outlet end corresponding to the second air outlet; The second air duct is mutually independent from the first air duct, extends from one end of the second air duct, which is communicated with the through hole, to the air outlet, and comprises: a first branch flow passage and a second branch flow passage; the first circulation groove is communicated with the air outlet end of the first branch flow passage and surrounds the first air outlet end; The second circulation groove is communicated with the air outlet end of the second branch flow passage and surrounds the second air outlet end; When the first air outlet is in an open state and the first branch flow passage is in a communication state, the fan operates to enable air in the volute to be divided into two paths, one path passes through the first air passage and flows out of the first air outlet end, the other path passes through the second air passage and flows out of the first circulation groove, and the air flowing out of the first circulation groove forms an annular package for the air flowing out of the first air outlet end; When the second air outlet is in an open state and the second branch flow channel is in a communication state, the fan operates to enable air in the volute to be divided into two paths, one path passes through the first air channel and flows out of the second air outlet end, the other path passes through the second air channel and flows out of the second circulation groove, and the air flowing out of the second circulation groove forms annular package for the air flowing out of the second air outlet end.

Description

Indoor unit of air conditioner Technical Field The application relates to the technical field of air treatment, in particular to an air conditioner indoor unit. Background The air pipe type air conditioner indoor unit is small in air supply distance, most indoor units send air into the room from the air outlet along the horizontal direction, cold air is intensively reduced due to the fact that the air supply distance is short during refrigeration, a low-temperature area is concentrated, hot air density is small during heating, hot air is concentrated on the upper layer of the room to lead to cold and hot layering, heat transfer efficiency is reduced, and user experience comfort is affected. At present, the prior art mostly adopts double fans and single fans to match with a rotating volute or a rigid air deflector, and can realize multidirectional air supply, but still can not solve the problem of short air supply distance. Disclosure of Invention The application provides an air conditioner indoor unit which can realize multidirectional air supply and prolong the air supply distance. In one aspect of the application, an indoor unit of an air conditioner comprises a casing, a first air outlet and a second air outlet, wherein at least two air outlets are arranged on the casing, the two air outlets are respectively a first air outlet arranged on a first side panel of the casing, and a second air outlet arranged on a bottom plate of the casing; the fan comprises a volute, a first air channel, a second air channel, a first circulating channel, a second circulating channel and a second circulating channel, wherein the volute is provided with an air outlet, a through hole for communicating the inside and the outside of the volute is formed in the volute, the first air channel is communicated between the air outlet and the air outlet of the volute, the heat exchanger is arranged in the first air channel, the first air channel comprises a first air outlet end corresponding to the first air outlet and a second air outlet end corresponding to the second air outlet, the second air channel is mutually independent from the first air channel, the second air channel extends from one end of the second air channel, which is communicated with the through hole, to the air outlet, the second air channel comprises a first branch flow channel and a second branch flow channel, the first circulating channel is communicated with the air outlet end of the first branch flow channel, the first circulating channel is communicated with the first air outlet end, the second circulating channel is communicated with the air outlet end of the second branch flow channel, and the second circulating channel is communicated with the second air outlet end; when the first air outlet is in an open state and the first branch flow passage is in a communication state, the fan operates to enable air in the volute to be divided into two paths, wherein one path flows out from the first air outlet end through the first air passage, and the other path flows out from the first circulation groove through the second air passage; When the second air outlet is in an open state and the second branch flow channel is in a communication state, the fan operates, so that air in the volute is divided into two paths, one path flows out from the second air outlet end through the first air channel, and the other path flows out from the second circulation groove through the second air channel. In the technical scheme, the first air outlet is in an open state, and when the first branch flow passage is in a communication state, the fan works, and the first air passage and the second air passage respectively generate continuous air flow. Meanwhile, the high-speed air flow flowing out of the first circulating groove forms an annular package for the air flow flowing out of the first air outlet end, so that the high-speed air flow which does not pass through the heat exchanger is pulled to pass through the low-speed air flow of the heat exchanger through the entrainment effect, the air outlet can cover the indoor space more quickly, and the horizontal air supply range of the indoor unit of the air conditioner is increased. In the entrainment process, the high-speed air flow which does not pass through the heat exchanger is mixed with the low-speed air flow which passes through the heat exchanger, so that the difference between the air outlet of the air conditioner and the indoor temperature is reduced, and the comfort level of the air outlet is improved. Meanwhile, the high-speed air flow of the second air duct does not pass through the heat exchanger, and the high-speed air flow flowing out of the second air outlet end forms an annular package on the air flow flowing out of the second air outlet end, so that the high-speed air flow which does not pass through the heat exchanger pulls the low-speed air flow passing through the heat exchanger through the entrainment effect, the ai