CN214275952U

CN214275952U - Indoor unit of air conditioner

Info

Publication number: CN214275952U
Application number: CN202120358877.3U
Authority: CN
Inventors: 许纪刚; 焦学超; 谢宝臣
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-09-24
Anticipated expiration: 2031-02-09

Abstract

An indoor unit of an air conditioner, comprising: the air conditioner comprises a shell, a fan and a fan, wherein an air inlet and an air outlet are formed in the shell; the volute is arranged in the machine shell, and an air channel communicated with the air inlet and the air outlet is formed in the volute; the heat exchanger is arranged in the air duct and used for exchanging heat of air entering from the air inlet; the fan is arranged in the air channel and positioned at the downstream of the evaporator and used for driving air to flow; the inner wall of the air duct is provided with a first volute tongue at one side close to the air outlet, the part of the first volute tongue facing the air inlet is a windward side, the part of the first volute tongue facing the air outlet is an air guide surface, and the part of the volute tongue between the highest point of the windward side and the highest point of the air guide surface is a transition section; the length of the transition section is delta, and delta satisfies: delta is more than or equal to 5mm and less than or equal to 20 mm. The technical effects of the utility model: through setting up the length parameter of the changeover portion of first snail tongue, when improving the anti-wind resistance ability, obviously reduce air conditioner noise.

Description

Indoor unit of air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioner, especially, relate to an indoor unit of air conditioner.

Background

In the air conditioner industry at present, double-suction centrifugal fans are mostly adopted in the air duct machine products, and the air duct machine industry adopting cross-flow fans is extremely rare. The cross-flow fan and the air duct system are widely applied to household air-conditioning wall units or cabinet units. The cross-flow fan is applied to the ducted air conditioner product, and due to the limitation of the layout form and structure of the heat exchanger, the wind resistance of the cross-flow fan ducted air conditioner is much larger than that of a conventional hanging machine or cabinet machine, so the model selection of the fan and the design difficulty of an air duct system are very large. If the design scheme of the conventional on-hook machine or cabinet machine is directly adopted, the air output is reduced due to large wind resistance, the wind speed distribution is uneven, the indoor unit is easy to generate sudden and sudden air-breathing noise, particularly in the air-conditioning refrigeration process, the phenomenon is more obvious, the subjective auditory sensation of a user is greatly reduced, and the industrial problem is also one of the main reasons of rare products of the cross-flow fan air duct machine. If the problem is overcome, the method is not only beneficial to propelling the household process of the cross-flow fan air duct machine, but also can provide technical support for solving the problem of little noise of a hanging machine or a cabinet machine.

Disclosure of Invention

An embodiment of the utility model provides an indoor set of air conditioner provides a transition section length of the first snail tongue in control wind channel during the main objective, improves the indoor set of air conditioner of noise reduction when air conditioner wind channel anti-wind hinders.

The embodiment of the utility model provides an in the air conditioning indoor unit, include: the air conditioner comprises a shell, a fan and a fan, wherein an air inlet and an air outlet are formed in the shell; the volute is arranged in the machine shell, and an air channel communicated with the air inlet and the air outlet is formed in the volute; the heat exchanger is arranged in the air duct and used for exchanging heat of air entering from the air inlet; the fan is arranged in the air duct and positioned at the downstream of the heat exchanger and used for driving air to flow; the inner wall of the air duct is provided with a first volute tongue at one side close to the air outlet, the part of the first volute tongue facing the air inlet is a windward side, the part of the first volute tongue facing the air outlet is an air guide surface, and the part of the volute tongue between the highest point of the windward side and the highest point of the air guide surface is a transition section; the length of the transition section is delta, and delta satisfies: delta is more than or equal to 5mm and less than or equal to 20mm, and the wind resistance of the air conditioner air duct is improved and the noise is reduced by controlling the length of the transition section of the first volute tongue of the air duct.

The utility model discloses an in the embodiment, the changeover portion has the contained angle with the length direction's of casing plane, and the changeover portion is in with the length direction's of casing plane contained angle scope: -5 to 5 °.

The utility model discloses an in the embodiment, the wind channel has the second snail tongue on the inner wall of the opposite side of relative first snail tongue, the part of second snail tongue orientation air intake is sharp section with higher speed, the part of second snail tongue orientation air outlet is back snail tongue section, the part of second snail tongue between the highest point of sharp section with higher speed and the highest point of back snail tongue section is the circular arc section, the fan of fan has the center of rotation, the contained angle that the line of center of rotation is connected with the terminal point of sharp section with higher speed to the line of center of rotation is theta 1 in the starting point of sharp section with higher speed, the contained angle that the line of center of rotation is connected with the terminal point of circular arc section to the starting point of circular arc section is theta 2, the contained angle that the line of center of rotation is connected with the terminal point of back snail tongue section to the line of center of rotation is theta 3, wherein theta 1, theta 2 and theta 3 satisfy: theta 1 is more than or equal to 25 degrees and less than or equal to 35 degrees, theta 2 is more than or equal to 50 degrees and less than or equal to 60 degrees, and theta 3 is more than or equal to 55 degrees and less than or equal to 65 degrees.

The utility model discloses an in the embodiment, the straight line accelerates the section and has contained angle theta 4 with casing length direction's plane, and theta 4 satisfies: theta 4 is more than or equal to 30 degrees and less than or equal to 40 degrees.

In the embodiment of the utility model, the radius of curvature of circular arc section is R1, and R1's scope satisfies: r1 is more than or equal to 28mm and less than or equal to 35 mm.

In the embodiment of the present invention, the curvature radius of the posterior volute tongue section is R2, and the range of R2 satisfies: r2 is more than or equal to 70mm and less than or equal to 80 mm.

The utility model discloses an in the embodiment, the extension line of sharp acceleration segment is theta 5 with the contained angle of the extension line of wind-guiding surface, and theta 5 satisfies: theta 5 is more than or equal to 10 degrees and less than or equal to 25 degrees.

The utility model discloses an in the embodiment, the width of air outlet is L1, and the width of air intake is L2, and the fan diameter of fan subassembly is D, and wherein, L2 is with L1's relation: l2 is 2.6L 1-3.3L 1; the relationship of L1 to D is: l1 is 0.2D to 0.3D.

The embodiment of the utility model provides an in, the casing is provided with the water collector in the below of heat exchanger.

In the embodiment of the utility model, the heat exchanger is V type heat exchanger.

Drawings

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

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

FIG. 2 is a schematic diagram of a transition section length according to an embodiment of the present invention;

FIG. 3 is a schematic view of a second volute tongue of an indoor unit of an air conditioner according to an embodiment of the present invention;

1. a housing; 101. an air inlet; 102. an air outlet; 2. a volute; 3. a fan; 4. a heat exchanger; 5. a water pan; 6. a first volute tongue; 601. an air guide surface; 602. the windward side; 603. a transition section; 7. a second volute tongue; 701. a linear acceleration section; 702. a circular arc section; 703. a posterior volute tongue segment.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, 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 merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

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 invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A compressor, a condenser, an expansion valve, and a heat exchanger are provided in an air conditioner, and the air conditioner performs a refrigeration cycle of the air conditioner by using the compressor, the condenser, the expansion valve, and the heat exchanger. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and heat exchange, 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 heat exchanger exchanges heat of the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The heat exchanger may 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.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and the 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 a heat exchanger. 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 a heat exchanger, the air conditioner is used as a cooler in a cooling mode.

Referring to fig. 1 to 3, the air conditioner is a duct machine in the present application, an air inlet 101 is disposed at one end of the housing 1, an air outlet 102 is disposed at the other end of the housing 1, and the air inlet 101 and the air outlet 102 of the housing 1 are communicated with each other, so that air can enter the housing 1 from the air inlet 101 and then leave the housing 1 from the air outlet 102 to supply air to an indoor space where a user is located.

A volute 2 is arranged in the machine shell 1, an air channel communicated with an air inlet 101 and an air outlet 102 is arranged in the volute 2, the air channel in the volute 2 is in a curve shape, the heat exchanger 4 is arranged at the position of the air duct close to the air inlet 101, when air enters the air duct of the volute 2 in the machine shell 1 from the air inlet 101, the heat exchanger 4 firstly exchanges heat with the air, according to the working mode of the air conditioner, the air is cooled or heated to realize the cooling or heating function of the air conditioner, meanwhile, in order to drive the air to enter the air channel from the air inlet 101 and leave the air channel from the air outlet 102, the fan 3 is arranged at the downstream of the heat exchanger 4 in the air duct, when the fan in the fan 3 rotates, air flows along the arrow direction in fig. 1 under the action of the rotation of the fan 3, flows into the air duct from the air inlet 101, and leaves the air duct from the air outlet 102, so that the indoor air supply function is realized.

In the embodiment of the present invention, in order to improve the air supply effect of the air conditioner, the volute 2 is provided with the first volute tongue 6 on the inner wall of the air duct near the air outlet 102, the first volute tongue 6 is composed of three parts, the part of the first volute tongue 6 facing the air outlet 102 is the air guide surface 601, the part of the first volute tongue 6 facing the air inlet 101 is the windward surface 602, the part of the first volute tongue 6 between the highest point of the air guide surface 601 and the highest point of the windward surface 602 is the transition surface 603, and the transition surface 603 can be set as a plane or a curved surface.

Referring to fig. 2, in the embodiment of the present invention, the wind guiding surface 601 is a plane, the windward surface 602 is an arc surface, the transition surface 603 connecting the highest point of the wind guiding surface 601 and the highest point of the windward surface 602 is a plane, the length of the transition surface 603 is δ, and δ satisfies: delta is not less than 7mm and not more than 16mm, in the embodiment, the length delta of the transition surface 603 is selected to be 11mm, so that the wind resistance of the air duct at the air outlet 102 is improved, the noise of the air duct of the air conditioner is reduced, and the problems of small wind resistance and small noise of the tubular duct type air conditioner are solved.

The utility model discloses an in the embodiment, wind-guiding surface 601 is the plane, and windward side 602 is the arc surface, and the transition face 603 of connecting wind-guiding surface 601 peak and windward side 602 peak is the plane, and the length of transition face 603 is delta, and the delta satisfies: delta is not less than 8mm and not more than 15mm, in the embodiment, the length delta of the transition surface 603 is selected to be 10mm, so that the wind resistance of the air duct at the air outlet 102 is improved, the noise of the air duct of the air conditioner is reduced, and the problems of small wind resistance and small noise of the tubular duct type air conditioner are solved.

Further, in the embodiment of the present invention, an included angle is formed between the transition surface 603, where the highest point of the wind guide surface 601 is connected with the highest point of the windward surface 602, and the horizontal plane, where the length direction of the casing 1 is standard, where the included angle ranges from-4 ° to 4 °, in this embodiment, the included angle between the transition surface 603 and the horizontal plane is selected to be 0 °, that is, the transition surface 603 is parallel to the horizontal plane, and the highest point of the wind guide surface 601 and the highest point of the windward surface 602 are located in the same horizontal plane.

In the embodiment of the present invention, the air duct has a second volute tongue 7 on the inner wall close to the air inlet 101 on the other side opposite to the first volute tongue 6, the portion of the second volute tongue 7 facing the air inlet 101 is a linear acceleration section 701, the portion of the second volute tongue 7 facing the air outlet 102 is a rear volute tongue section 703, the portion of the second volute tongue 7 between the highest point of the linear acceleration section 701 and the highest point of the rear volute tongue section 703 is an arc section 702, the fan of the fan 3 has a rotation center, the angle between the line connecting the starting point of the linear acceleration section 701 with the fan rotation center of the fan 3 and the line connecting the end point of the linear acceleration section 701 with the rotation center is θ 1, the angle between the line connecting the starting point of the arc section 702 with the rotation center and the end point of the arc section 702 with the rotation center is θ 2, the angle between the line connecting the starting point of the rear volute tongue section 703 with the rotation center and the end point of the rear volute tongue section 703 with the rotation center is θ 3, wherein θ 1, θ 2, and θ 3 satisfy: theta 1 is more than or equal to 26 degrees and less than or equal to 34 degrees, theta 2 is more than or equal to 51 degrees and less than or equal to 59 degrees, theta 3 is more than or equal to 56 degrees and less than or equal to 64 degrees, theta 1 is actually selected to be 30 degrees, theta 2 is actually selected to be 55 degrees, and theta 3 is actually selected to be 60 degrees.

The utility model discloses an in the embodiment, straight line acceleration section 701 has contained angle theta 4 with the plane of the length direction of casing 1, and theta 4 satisfies: theta 4 is more than or equal to 31 degrees and less than or equal to 39 degrees, and theta 4 is actually selected to be 34 degrees.

The utility model discloses an in the embodiment, the contained angle of the extension line of straight line acceleration section 701 and the extension line of wind guide surface 601 is theta 5, and theta 5 satisfies: theta 5 is more than or equal to 11 degrees and less than or equal to 24 degrees, and theta 5 is actually selected to be 17 degrees.

In the embodiment of the utility model, the radius of curvature of circular arc section is R1, and R1's scope satisfies: r1 is more than or equal to 29mm and less than or equal to 34mm, and R1 is actually selected to be 32 mm.

In the embodiment of the present invention, the curvature radius of the posterior volute tongue section is R2, and the range of R2 satisfies: r2 is more than or equal to 71mm and less than or equal to 79mm, and R2 is actually selected to be 75 mm.

The utility model discloses an in the embodiment, the width of air outlet is L1, and the width of air intake is L2, and the fan diameter of fan subassembly is D, and wherein, L2 is with L1's relation: l2 is 2.7L 1-3.2L 1; the relationship of L1 to D is: l1 is 0.23D to 0.29D, and in this embodiment, L2 is 3L1 and L1 is 0.28D.

The utility model discloses an in the embodiment, heat exchanger 4 is V type heat exchanger, when improving the heat exchange efficiency of heat exchanger 4, improves the air mass flow through heat exchanger 4 to ensure the air output of air conditioner, be provided with water collector 5 in the below of heat exchanger 4, the air can produce the comdenstion water when heat exchanger 4 heat transfer, and water collector 5 sets up the comdenstion water in order to collect on the heat exchanger 4 in the below of heat exchanger 4.

In summary, the present invention is only a specific embodiment, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

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

the air conditioner comprises a shell, a fan and a fan, wherein an air inlet and an air outlet are formed in the shell;

the volute is arranged in the machine shell, and an air duct communicated with the air inlet and the air outlet is arranged inside the volute;

the heat exchanger is arranged in the air duct and is used for exchanging heat for the air entering from the air inlet;

the fan is arranged in the air duct and positioned at the downstream of the heat exchanger and used for driving air to flow;

wherein the content of the first and second substances,

a first volute tongue is arranged on one side, close to the air outlet, of the inner wall of the air duct, the part, facing the air inlet, of the first volute tongue is a windward side, the part, facing the air outlet, of the first volute tongue is an air guide surface, and the part, between the highest point of the windward side and the highest point of the air guide surface, of the volute tongue is a transition section; the length of the transition section is delta, and delta satisfies the following conditions: delta is more than or equal to 5mm and less than or equal to 20 mm.

2. An indoor unit of an air conditioner according to claim 1, wherein: the changeover portion with the length direction's of casing plane has the contained angle, just the changeover portion with the length direction's of casing plane contained angle scope is in: -5 to 5.

3. An indoor unit of an air conditioner according to claim 1, wherein: the inner wall of the air duct on the other side opposite to the first volute tongue is provided with a second volute tongue, the part of the second volute tongue facing the air inlet is a linear acceleration section, the part of the second volute tongue facing the air outlet is a rear volute tongue section, the part of the second volute tongue between the highest point of the linear acceleration section and the highest point of the rear volute tongue section is an arc section, the fan of the fan is provided with a rotation center, the included angle between the connecting line of the starting point of the linear acceleration section and the rotation center and the connecting line of the terminal point of the linear acceleration section and the rotation center is theta 1, the included angle between the connecting line of the starting point of the arc section and the rotation center and the connecting line of the terminal point of the arc section and the rotation center is theta 2, the included angle between the connecting line of the starting point of the rear volute tongue section and the terminal point of the rear volute tongue section and the rotation center is theta 3, wherein θ 1, θ 2, and θ 3 satisfy: theta 1 is more than or equal to 25 degrees and less than or equal to 35 degrees, theta 2 is more than or equal to 50 degrees and less than or equal to 60 degrees, and theta 3 is more than or equal to 55 degrees and less than or equal to 65 degrees.

4. An indoor unit of an air conditioner according to claim 3, wherein: the straight line acceleration section and the plane of the length direction of the shell form an included angle theta 4, and the theta 4 meets the following requirements: theta 4 is more than or equal to 30 degrees and less than or equal to 40 degrees.

5. An indoor unit of an air conditioner according to claim 3, wherein: the curvature radius of the circular arc segment is R1, and the range of R1 satisfies: r1 is more than or equal to 28mm and less than or equal to 35 mm.

6. An indoor unit of an air conditioner according to claim 3, wherein: the curvature radius of the rear volute tongue section is R2, and the range of R2 satisfies the following conditions: r2 is more than or equal to 70mm and less than or equal to 80 mm.

7. An indoor unit of an air conditioner according to claim 3, wherein: the included angle between the extension line of the linear acceleration section and the extension line of the air guide surface is theta 5, and the theta 5 satisfies the following conditions: theta 5 is more than or equal to 10 degrees and less than or equal to 25 degrees.

8. An indoor unit of an air conditioner according to claim 1, wherein: the width of air outlet is L1, the width of air intake is L2, the fan diameter of fan subassembly is D, wherein, the relation of L2 and L1 is: l2 is 2.6L 1-3.3L 1; the relationship of L1 to D is: l1 is 0.2D to 0.3D.

9. An indoor unit of an air conditioner according to claim 1, wherein: and a water receiving tray is arranged below the heat exchanger of the shell.

10. An indoor unit of an air conditioner according to claim 1, wherein: the heat exchanger is a V-shaped heat exchanger.