CN216159153U - Indoor unit of air conditioner - Google Patents

Abstract

The utility model discloses an air-conditioning indoor unit, which comprises an outer shell, wherein an installation inner cavity is formed in the outer shell, a heat exchanger, a driving assembly and an air guide assembly are arranged in the installation inner cavity, the driving assembly comprises a driving part and an output shaft connected with the output end of the driving part, and the driving assembly is fixed in the installation inner cavity through an installation support; the mounting bracket is close to the air inlet of the volute, so that the eddy generated when the airflow enters the volute can be effectively reduced, and the airflow can enter the volute more smoothly; the air guide assembly comprises an air guide fan and a volute, an air inlet and an air outlet are formed in the volute, a first air guide portion and a second air guide portion are formed in the air outlet and used for guiding air flow output from the air outlet, air flow vortex groups are enabled to be more stable in transition, a certain noise reduction effect is achieved, the air flow cross section area is gradually increased, dynamic pressure is reduced, static pressure is increased, the air flow speed is reduced, and pneumatic noise is reduced in a near step.

Description

Indoor unit of air conditioner

Technical Field

The utility model belongs to the technical field of air conditioners, and particularly relates to an indoor unit of an air conditioner.

Background

The indoor unit of the ducted central air conditioner, which is similar to the end of a general central air conditioner and is in the form of a fan coil (including a fan and a coil for heat exchange), is generally called a ducted unit, and is generally placed on the top of a room, such as the top wall of a living room or bedroom (called a ceiling type for short).

The installation position of the air duct machine has limitation on the requirement of volume, so that the noise of the air duct machine must be controlled within a very low level, otherwise, the use experience of a user is influenced.

Disclosure of Invention

The utility model aims to provide an air conditioner indoor unit, which aims to solve the problems that the air conditioner indoor unit in the prior art generates larger noise in the air flow circulation process, the rest of a user is influenced, the user experience is poor and the like.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

an indoor unit of an air conditioner, comprising:

the outer shell is internally provided with an installation inner cavity;

the driving assembly comprises a driving part and an output shaft connected with the output end of the driving part, and is installed in the installation inner cavity and fixed on the inner wall of the outer shell through an installation support;

the air guide fan is fixedly connected to the output shaft;

the volute is fixedly connected to the outer shell and sleeved on the outer side of the air guide fan, an air inlet and an air outlet are formed in the volute, the air outlet is formed in the side wall of the volute, and a first air guide portion and a second air guide portion are formed in the air outlet and used for guiding air flow output from the air outlet.

In some embodiments of the present application, the outer housing includes a top plate and a bottom plate disposed opposite to each other, and two sides of the mounting bracket are fixed to the top plate and the bottom plate, respectively.

In some embodiments of the present application, the mounting bracket includes vertical plates formed on both sides of the driving portion and intermediate plates connected to the vertical plates on both sides, the bottom of the vertical plate is fixed to the bottom plate, the intermediate plate is fixed to the top plate, and the vertical plate has a thickness of 2-4 mm.

In some embodiments of the present application, the scroll casing further comprises a heat exchanger disposed in the mounting cavity opposite the air outlet of the scroll casing.

In some embodiments of the present application, the first air guiding portion and the second air guiding portion are respectively horizontally disposed on upper and lower sides of the air outlet.

In some embodiments of the present application, the lengths of the first wind-guiding portion and the second wind-guiding portion are adapted to the length of the wind outlet.

In some embodiments of the present disclosure, along a length direction of the first air guiding portion, a plurality of air guiding grooves are dispersedly formed on a side of the first air guiding portion close to the air outlet, and the length direction of the air guiding grooves is adapted to an airflow flowing direction.

In some embodiments of the present application, a downwardly inclined arc structure is formed on the second air guiding portion, a plurality of air guiding notches are dispersedly formed on an outer edge of the second air guiding portion, and the air guiding notches gradually expand outward along a flowing direction of the air flow.

In some embodiments of the present application, an air guide baffle is formed between adjacent air guide notches, and a ratio of a maximum width of the air guide baffle to a length of the air guide baffle is 0.7-0.9.

In some embodiments of the present application, a connection hole is formed on the vertical plate, two sides of the driving portion are respectively fixed in the connection hole, and a buffer portion is formed between the driving portion and the connection hole.

Compared with the prior art, the utility model has the advantages and positive effects that:

the driving assembly is fixed in the mounting inner cavity through the mounting bracket, so that the firmness of the driving assembly is improved, the vertical plates are respectively close to the air inlet of the volute, the eddy generated when the air flow enters the volute can be effectively reduced, the air flow can enter the volute more smoothly, and further the fluid noise is reduced, the buffer part arranged between the driving part and the vertical plates is used for reducing the vibration generated by the driving part in the operation process, so that the vibration transmitted to the mounting bracket by the driving part is reduced, and the vibration noise generated in the working process of the driving assembly is reduced;

the turbine air outlet is provided with a first air guide part and a second air guide part, in the process that air flow is output from the turbine air outlet, the transition of an air flow vortex group is more stable through the air guide grooves and the flow guide effect of the air guide notches, a certain noise reduction effect is achieved, along the flowing direction of the air flow, the air guide notches are gradually expanded outwards to have the effect of inducing the air flow, the sectional area of the air flow flowing through the positions is gradually increased, the dynamic pressure is reduced, the static pressure is increased, the air flow rate is reduced, and the aerodynamic noise is reduced in a near step mode.

Other features and advantages of the present invention will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of an indoor unit of an air conditioner according to the present invention;

FIG. 2 is a schematic view of a mounting bracket coupled to a drive assembly according to an embodiment of the present invention;

FIG. 3 is a schematic view of the outlet position of the volute according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a volute and an air guiding fan according to an embodiment of the present invention;

FIG. 5 is one of the schematic structural diagrams of the volute according to the embodiment of the present invention;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is an enlarged schematic view at B in FIG. 5;

FIG. 8 is a second schematic view of the volute structure according to the embodiment of the present invention;

FIG. 9 is an enlarged schematic view at C of FIG. 8;

fig. 10 is a schematic view of a wind guide slit and a wind guide barrier;

in the figure, the position of the upper end of the main shaft,

100. an outer housing;

110. a top plate;

120. a base plate;

200. a drive assembly;

210. a drive section; 211. an output shaft;

220. a vertical plate;

230. a middle plate;

240. a buffer section;

300. an air guide assembly;

310. an air guide fan;

320. a volute;

321. an air outlet;

322. a second air guiding part; 3221. an air guide notch; 3222. wind guiding and blocking;

323. a first air guiding part; 3231. a wind guide groove;

324. an air inlet;

400. a heat exchanger.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically coupled, may be directly coupled, or may be indirectly coupled through an intermediary. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

An outdoor unit (outdoor unit) of an air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, an indoor unit (indoor unit) of an air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

As shown in fig. 1 to 3, the present application provides an air conditioning indoor unit, which includes an outer casing 100, an installation cavity formed in the outer casing 100, a heat exchanger 400 and a driving assembly 200 disposed in the installation cavity, and the driving assembly 200 includes a driving part 210 and an output shaft 211 connected to an output end of the driving part 210.

The output shaft 211 is connected with an air guide fan 310, a volute 320 is formed outside the air guide fan 310, and the air guide fan 310 and the volute 320 jointly form an air guide assembly 300 of the indoor air conditioner, and are used for guiding air input from the outside into the heat exchanger 400.

The driving assembly 200 is fixed on the inner wall of the outer casing 100 through a mounting bracket, specifically, the mounting bracket includes vertical plates 220 formed on both sides of the driving portion 210 and a middle plate 230 connected to the vertical plates 220 on both sides, the driving portion 210 is a driving motor, a connecting hole is formed on the vertical plate 220, and both sides of the driving portion 210 are respectively fixed in the connecting hole of the vertical plate 220.

The volute 320 is fixedly connected to the outer shell 100 and sleeved outside the air guide fan 310, an air inlet 324 and an air outlet 321 are formed in the volute 320, the air outlet 321 is formed in the side wall of the volute 320, the position of the air outlet 321 corresponds to a heat exchange inlet of the heat exchanger 400, and air flow output from the air outlet 321 enters the heat exchanger 400 to facilitate heat exchange.

The driving unit 200 is fixed in the mounting cavity of the outer casing 100 by a mounting bracket, specifically, the outer casing 100 includes a top plate 110 and a bottom plate 120 which are oppositely disposed, and upper and lower ends of the mounting bracket are fixed on the top plate 110 and the bottom plate 120, respectively.

The bottom of the vertical plate 220 is further formed with a fastening portion, the bottom of the vertical plate 220 is fixed on the bottom plate 120 of the outer casing 100 through a screw, and the middle plate 230 is directly fastened on the top plate 110 through a screw structure, so that the fixed connection above and below the mounting bracket is realized, and the stability of the driving assembly 200 is improved.

According to actual operation experience, the thickness range of the vertical plate 220 is selected to be 2-4 mm; the structural strength is ensured to meet the requirement, and meanwhile, the weight of the whole indoor air conditioner is not excessively increased.

Further, a buffer portion 240 is arranged between the driving portion 210 and the vertical plate 220, and the buffer portion 240 is an annular cushion made of rubber materials and used for reducing vibration generated in the operation process of the driving portion 210, so that vibration transmitted to the mounting bracket by the driving motor is reduced, and vibration noise generated in the working process of the driving assembly 200 is reduced.

Because the output shafts 211 at two sides of the driving motor are formed with the air guide fan 310 and the volute 320, and the central positions of two sides of the air guide fan 310 are the air inlets 324, the position of the vertical plate 220 corresponds to the air inlets 324 of the air guide fans 310 at two sides, and the vertical plate 220 can effectively reduce the vortex generated when the air flow enters the volute 320, so that the air flow enters the volute 320 more smoothly, and further, the fluid noise is reduced.

As shown in fig. 4 to 10, in order to reduce noise generated by the air flow in the output process of the scroll casing 320, a first air guiding portion 323 and a second air guiding portion 322 are formed on the air outlet 321 for guiding the air flow output from the air outlet 321.

Specifically, in order to guide the airflow output from the scroll 320 to the maximum extent, the first air guiding portion 323 and the second air guiding portion 322 are respectively disposed above and below the air outlet 321 of the scroll 320, and the first air guiding portion 323 and the second air guiding portion 322 are horizontally oriented to be equal to the length of the air outlet 321, so that the contact area with the airflow output from the air outlet 321 is increased, and the flow guiding effect is improved.

Of course, the directions of the first air guiding part 323 and the second air guiding part 322 may be adjusted according to the actual installation direction in addition to the horizontal installation direction, so as to achieve better butt joint between the air flow of the air outlet 321 and the heat exchanger 400, for example, the first air guiding part 323 and the second air guiding part 322 may be respectively or both installed at an outward-expanding angle with respect to the air outlet 321.

The following will explain the structure of the first air guiding part 323 and the second air guiding part 322 in detail:

as shown in fig. 4 and 6, the first air guiding portion 323 is a flat plate structure, and a plurality of air guiding grooves 3231 are dispersedly formed on one side of the first air guiding portion 323 close to the air outlet 321 along the length direction of the first air guiding portion 323, the air guiding grooves 3231 are groove structures with openings facing the air outlet 321, and along the airflow flowing direction, the depth of the air guiding grooves 3231 gradually increases, the length direction of the air guiding grooves 3231 is adapted to the airflow flowing direction, in the process of transporting the airflow from the air outlet 321 to the outside, the airflow flows more smoothly under the drainage effect of the air guiding grooves 3231, and because the depth of the air guiding grooves 3231 increases along the flowing direction of the airflow, the cross-sectional area of the entire airflow flowing becomes larger, so that the airflow flow velocity decreases, and noise is reduced.

As shown in fig. 7 to 9, the second air guiding portion 322 is located below the air outlet 321, so as to avoid the second air guiding portion 322 from obstructing the airflow flowing into the heat exchanger 400, and to further increase the cross-sectional area for airflow circulation, a downward inclined arc structure is formed on the side of the second air guiding portion 322 contacting the air outlet 321, which is beneficial to guiding the airflow into the heat exchanger 400 at the corresponding position, and thus the airflow is guided.

Preferably, a plurality of air guiding slits 3221 are dispersedly formed on the outer edge of the second air guiding portion 322, each air guiding slit 3221 is a slit formed on the outer edge of the second air guiding portion 322, the air guiding slits 3221 gradually expand outward along the flow direction of the air flow, and the expanded air guiding slits 3221 increase the flow area when the air flow flows, also play a role in guiding the flow, and contribute to further reducing the noise.

As shown in fig. 10, an air guiding partition 3222 is formed between adjacent air guiding slits 3221, and as a result of practice, when a ratio of a maximum width L of the air guiding partition 3222 to a length H of the air guiding partition 3222 is in a range of 0.7 to 0.9, drainage and air guiding effects are optimal.

The air conditioning indoor unit that this application relates to, under the prerequisite that does not change the air input-output volume, through the improvement to spiral case 320 structure and drive assembly 200 fixed connection's optimization, the noise that produces among the air current circulation process has effectively been reduced, a structure letter for the installing support of fixed drive portion 210, the processing cost is low, and with drive portion 210 and shell body 100 between be connected convenient and fast, the firm degree of drive assembly 200 installation has been improved, the setting of buffer portion 240, form good separation to the vibration that produces in its course of operation, reduce the vibration noise.

The vertical plates 220 on the two sides of the mounting bracket are beneficial to reducing the eddy current of the fluid entering the volute 320, so that the fluid can enter the volute 320 more smoothly, and the noise of the fluid is reduced.

The first air guiding portion 323 and the second air guiding portion 322 are formed outside the air outlet 321 of the scroll 320, so that the processing is convenient, and the air flow is not affected, in the process of outputting the air flow from the air outlet 321, both the air guiding groove 3231 on the first guide plate and the air guiding notch 3221 formed on the second guide plate generate a flow guiding effect on the air flow, and after the air flow is output from the air outlet 321, along with the circulation of the air flow, the size of the ventilation section is gradually increased, the dynamic pressure of the air flow is reduced, the static pressure is increased, the flow speed is reduced, and the aerodynamic noise is further reduced.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention, and therefore, the scope of the present invention shall be subject to the claims.

Claims (10)

1. An indoor unit of an air conditioner, comprising:

the outer shell is internally provided with an installation inner cavity;

the driving assembly comprises a driving part and an output shaft connected with the output end of the driving part, and is installed in the installation inner cavity and fixed on the inner wall of the outer shell through an installation support;

the air guide fan is fixedly connected to the output shaft;

the volute is fixedly connected to the outer shell and sleeved on the outer side of the air guide fan, an air inlet and an air outlet are formed in the volute, the air outlet is formed in the side wall of the volute, and a first air guide portion and a second air guide portion are formed in the air outlet and used for guiding air flow output from the air outlet.

2. An indoor unit of an air conditioner according to claim 1,

the shell body comprises a top plate and a bottom plate which are oppositely arranged, and two sides of the mounting support are respectively fixed on the top plate and the bottom plate.

3. An indoor unit of an air conditioner according to claim 2,

the mounting support comprises vertical plates formed on two sides of the driving portion and middle plates connected with the vertical plates on the two sides, the bottom of each vertical plate is fixed on the bottom plate, the middle plates are fixed on the top plate, and the thickness of each vertical plate is 2-4 mm.

4. An indoor unit of an air conditioner according to claim 1,

the spiral case is characterized by further comprising a heat exchanger, wherein the heat exchanger is arranged in the installation inner cavity and is positioned on the opposite side of the air outlet of the spiral case.

5. An indoor unit of an air conditioner according to claim 1,

the first air guiding part and the second air guiding part are respectively horizontally arranged at the upper side and the lower side of the air outlet.

6. An indoor unit of an air conditioner according to claim 1,

the lengths of the first air guiding part and the second air guiding part are matched with the length of the air outlet.

7. An indoor unit of an air conditioner according to claim 6,

and a plurality of air guide grooves are formed on one side of the first air guide part close to the air outlet along the length direction of the first air guide part in a dispersed manner, and the length direction of the air guide grooves is matched with the airflow circulation direction.

8. An indoor unit of an air conditioner according to claim 1,

the second air guiding part is provided with a downward inclined cambered surface structure, a plurality of air guiding notches are formed on the outer edge of the second air guiding part in a dispersed mode, and the air guiding notches gradually expand outwards along the flowing direction of the air flow.

9. An indoor unit of an air conditioner according to claim 8,

and an air guide separation block is formed between every two adjacent air guide notches, and the ratio of the maximum width of the air guide separation block to the length of the air guide separation block is 0.7-0.9.

10. An indoor unit of an air conditioner according to claim 3,

the vertical plate is provided with a connecting hole, two sides of the driving part are respectively fixed in the connecting hole, and a buffer part is formed between the driving part and the connecting hole.

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