Air outlet mechanism and air conditioner

Abstract

The utility model discloses an air outlet mechanism and air conditioner relates to air conditioning technical field, wherein, air outlet mechanism includes: air duct shell, the inside of air duct shell forms the air duct, the front of air duct shell has the air inlet, and both sides have the air outlet, heat exchanger sets up in the air duct and is located between the air inlet and the air outlet, heat exchanger has two parts of symmetrical setting relative to the air inlet, and each part has first end and second end, the first end is connected with the inner wall of the back of air duct shell, the second end is connected with the inner wall of the front of air duct shell, and the included angle between the line of the first end and the second end and the inner wall of the air duct is acute angle. The utility model provides air outlet mechanism, in the inside of air duct shell, heat exchanger adopts the mode of the inclination setting, in this way, effectively reduces the thickness space that it occupies in the air duct, and then reduces the thickness of air duct shell.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to an air outlet mechanism and an air conditioner. Background Technology

[0002] The air outlet mechanism of existing air conditioners is relatively large, especially thick, which causes a lot of inconvenience to users.

[0003] For example, Chinese patent document CN112393409A discloses an air outlet mechanism and air conditioner, which adopts a structure of central air intake and side air outlet to avoid air blowing directly onto the user and improve the user experience.

[0004] However, the above-mentioned solution has a relatively thick air outlet component, which requires a large amount of indoor space during use and affects the aesthetics. Utility Model Content

[0005] In view of this, the present invention provides an air outlet mechanism and an air conditioner to solve the problem that the existing air outlet mechanism is too thick and occupies a large space.

[0006] This utility model provides an air outlet mechanism, including: The air duct housing has an air duct formed inside, and the front of the air duct housing has an air inlet and the two sides have air outlets. A heat exchanger is disposed inside the air duct and located between the air inlet and the air outlet. The heat exchanger has two parts symmetrically arranged relative to the air inlet. Each part has a first end and a second end. The first end is connected to the inner wall of the back side of the air duct housing, and the second end is connected to the inner wall of the front side of the air duct housing. The angle between the line connecting the first end and the second end and the inner wall of the air duct is an acute angle.

[0007] The air outlet mechanism provided by this utility model has an inclined arrangement of the heat exchanger inside the air duct shell, which effectively reduces the thickness space it occupies in the air duct, thereby reducing the thickness of the air duct shell.

[0008] Optionally, the angle between the line connecting the first end and the second end of the heat exchanger and the inner wall of the air duct is 20±10°.

[0009] Optionally, the heat exchanger has an arc-shaped structure, with both ends of the arc-shaped structure connected to the inner wall of the front side of the air duct shell, and the outer arc surface of the arc-shaped structure connected to the inner wall of the back side of the air duct shell.

[0010] Optionally, the heat exchanger has two symmetrical sets, with a partition between the two sets of heat exchangers, the partition being located at the center of symmetry of the air outlet.

[0011] Optionally, each group of heat exchangers has at least two rectangular structures stacked together.

[0012] Optionally, the cross-section of the duct housing is rectangular, and its thickness in the direction of the air inlet is <160mm.

[0013] Optionally, the angle between the orientation of the air outlet and the orientation of the air inlet is less than 90°.

[0014] Optionally, an air guide plate is provided at the air outlet, and the air guide plate has an arc-shaped section.

[0015] Optionally, the heat exchanger has an arc-shaped structure, with both ends of the arc-shaped structure connected to the inner wall of the front side of the air duct shell, and the outer arc surface of the arc-shaped structure connected to the inner wall of the back side of the air duct shell.

[0016] Optionally, a cross-flow fan is provided at the air outlet, and the distance between the inlet of the cross-flow fan and the heat exchanger is in the range of 0.8d-1.6d, where d is the impeller diameter.

[0017] This utility model also provides an air conditioner, including: the air outlet mechanism described in any of the above solutions.

[0018] The air conditioner provided by this utility model has all the advantages because it adopts the above-mentioned air outlet mechanism. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A top view of an air outlet mechanism provided for an embodiment of this utility model; Figure 2 A top view of another air outlet mechanism provided in an embodiment of this utility model; Figure 3 A top view of another air outlet mechanism provided in an embodiment of this utility model; Figure 4 for Figure 1 A magnified view of a portion of the image; Figure 5 The airflow diagram of the air outlet mechanism before the improvement; Figure 6This is a cloud diagram of the air outlet mechanism provided in the improved embodiment.

[0021] Explanation of reference numerals in the attached figures: 1. Air duct casing; 101. Front view; 102. Back view; 2. Heat exchanger; 201, First end; 202, Second end; 3. Partition; 4. Air guide plate; 5. Cross-flow fan; 501. First curve; 502. Second curve. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 1As shown, this is a specific implementation of the air outlet mechanism provided in this embodiment. The air outlet mechanism includes: an air duct shell 1 and a heat exchanger 2. The heat exchanger 2 is disposed inside the air duct shell 1. An air duct is formed inside the air duct shell 1. The front 101 of the air duct shell 1 has an air inlet and the two sides have air outlets. The heat exchanger 2 is located between the air inlet and the air outlet.

[0027] like Figure 1 As shown, in this embodiment, the heat exchanger 2 has two parts symmetrically arranged relative to the air inlet. Each part has a first end 201 and a second end 202. The first end 201 is connected to the inner wall of the back side 102 of the air duct housing 1, and the second end 202 is connected to the inner wall of the front side 101 of the air duct housing 1. This arrangement ensures that when air flows from the air inlet to the air outlet, it must pass through the heat exchanger 2, thereby guaranteeing the heat exchange effect on the air.

[0028] like Figure 1 As shown, in this embodiment, the angle between the line connecting the first end 201 and the second end 202 of the heat exchanger 2 and the inner wall of the air duct is an acute angle. It should be noted that this angle refers to the smallest angle between the connecting line and the inner wall. That is, there may be multiple angles between the line connecting the first end 201 and the second end 202 of the heat exchanger 2 and the inner wall of the air duct, with the smallest angle being an acute angle. This limitation of the angle range is mainly used to express the inclined arrangement of the heat exchanger 2, which, by inclining the heat exchanger 2, achieves the purpose of reducing the thickness of the air duct outer shell 1.

[0029] In the air outlet mechanism provided in this embodiment, the heat exchanger 2 is arranged at an angle inside the air duct shell 1. This effectively reduces the thickness space it occupies in the air duct, thereby reducing the thickness of the air duct shell 1. When this air outlet mechanism is placed indoors, the overall appearance will be more aesthetically pleasing.

[0030] It should be noted that in this embodiment, the duct housing 1 is manufactured using high-strength, lightweight materials, reducing the overall weight. For example, it can be made of aluminum alloy or composite materials, reducing the overall weight by approximately 30% and the volume by approximately 20%, thereby facilitating installation and transportation.

[0031] like Figure 1As shown, in some embodiments, the cross-section of the duct housing 1 is rectangular, and its thickness in the direction facing the air inlet is <160mm. That is, the length of the shorter side of the rectangle is <160mm. This configuration achieves an ultra-thin design for the duct housing 1. Preferably, in some embodiments, the thickness of the duct housing 1 is 140mm. Of course, the above description is not limiting; in some alternative embodiments, the thickness of the duct housing 1 can also be other dimensions, such as 150mm.

[0032] like Figure 1 As shown, in some embodiments, the angle between the line connecting the first end 201 and the second end 202 of the heat exchanger 2 and the inner wall of the air duct is 20±10°. This angle range is primarily used to express the degree of inclination of the heat exchanger 2. This degree of inclination ensures the length of the heat exchanger 2 while facilitating its placement within the air duct.

[0033] like Figure 1 As shown, in some embodiments, the angle between the orientation of the air outlet and the orientation of the air inlet is less than 90°. In actual use, the air outlet mechanism operates by drawing in air from the front and then blowing it out at an angle from both sides. This design allows the air outlet mechanism to be placed against a wall and avoids blowing air directly onto people in front of it.

[0034] like Figure 1 As shown, in some embodiments, a guide vane 4 is provided at the air outlet. The guide vane 4 can precisely guide the direction of airflow, helping to ensure a uniform distribution of airflow at the air outlet. Of course, the above description is not limiting; in some alternative embodiments, the guide vane 4 can be omitted.

[0035] like Figure 1 As shown, in some embodiments, the air guide plate 4 has an arc-shaped section. This design allows for smooth airflow guidance, reducing turbulence and resistance. When the airflow comes into contact with the arc-shaped section, it flows along the arc's contour, making changes in airflow direction more natural and smooth.

[0036] like Figure 1 , Figure 4 As shown, in some embodiments, a cross-flow fan 5 is provided at the air outlet. The impeller of the cross-flow fan 5 has 35 blades, an inner diameter of D1, an outer diameter of D2, and a diameter ratio of 0.6-0.7. The distance between the impeller inlet and the heat exchanger 2 is D3, and the value of D3 is (0.1-1)*D2. The minimum width of the impeller outlet air duct is D4, and the value of D4 is (0.35-0.45)*D2. The vortex clearance of the cross-flow fan 5, i.e., the minimum distance between the vortex and the outer circle of the impeller, is (0.03-0.08)*D2; the length of the outlet chassis of the cross-flow fan 5, i.e., the axial length of the fan outlet guide plate (chassis), is (0.9-1)D2; the outer circumferential blade angle of the cross-flow fan 5, i.e., the angle between the outer edge of the blade and the plane of rotation of the impeller, is (32-37)°; the inner circumferential blade angle of the cross-flow fan 5, i.e., the angle between the inner edge of the blade and the plane of rotation of the impeller, is (85-90)°.

[0037] The above parameters collectively determine the aerodynamic performance and acoustic characteristics of the cross-flow fan 5, and they are interconnected: the vortex clearance and blade angle together affect the formation and position of the eccentric vortex, which is a decisive factor in the performance of the cross-flow fan 5; the outlet chassis length and blade angle are matched to ensure that the airflow can be effectively discharged, reducing backflow and turbulence; the difference between the inner and outer circumferential blade angles (about 50°) forms the blade torsion, which optimizes the airflow in the blade channel.

[0038] With this configuration, the cross-flow fan 5 reduces fan power by about 15% and improves overall energy efficiency (APF) by about 20% under the same air volume, meeting energy-saving requirements.

[0039] like Figure 4 As shown, the cross-flow fan 5 has a vortex-shaped flow channel, which has a first curve 501 and a second curve 502. The fitting formula for the first curve 501 is: ; Where r is the radius in polar coordinates, θ is the angle in radians, 1.058≤θ≤2.637, 0.94D2≤a≤0.96D2, and D2 is the outer diameter of the impeller.

[0040] The fitting formula for the second curve 502 is: ; Where r is the radius in polar coordinates, θ is the angle in radians, -1.614≤θ≤0.01, 0.61D2≤b≤0.64D2, and D2 is the outer diameter of the impeller.

[0041] like Figure 5 , Figure 6 As shown, the vortex-shaped flow channel provided in this embodiment can optimize the airflow path compared to the previous version.

[0042] The air outlet mechanism provided in this embodiment adopts a cross-flow fan 5, which makes the air duct more compact and achieves an ultra-thin air duct design. Compared with the air duct of traditional cabinet air conditioners, the ultra-thin air duct design can save about 12% of space, allowing the air conditioner to better adapt to environments with limited space.

[0043] like Figure 2 As shown, in some embodiments, the heat exchanger 2 has two symmetrical sets, with a partition 3 between the two sets of heat exchangers 2. The partition 3 is located at the center of symmetry of the air outlet. The partition 3 enables the airflow to be evenly distributed to the two sets of heat exchangers 2, ensuring that an equal amount of airflow enters the heat exchangers 2 on both sides, and avoiding a situation where there is too much airflow on one side and too little on the other side.

[0044] like Figure 2 As shown, in some embodiments, each group of heat exchangers 2 has at least two rectangular structures stacked together. This arrangement significantly increases the heat exchange surface of the heat exchangers 2, thereby enhancing heat transfer efficiency. Of course, the above description is not limiting; in some alternative embodiments, the heat exchanger 2 may also be a single plate.

[0045] like Figure 3 As shown, in some embodiments, the heat exchanger 2 has an arc-shaped structure. Both ends of the arc-shaped structure are connected to the inner wall of the front side 101 of the air duct shell 1, and the outer arc surface of the arc-shaped structure is connected to the inner wall of the back side 102 of the air duct shell 1. This configuration achieves an integrated structure for the heat exchanger 2. Furthermore, the arc-shaped structure increases the contact area between the heat exchanger 2 and the airflow. Compared to a flat-plate heat exchanger 2, the arc-shaped outer arc surface and the space formed by its contact with the inner wall of the air duct provide more heat exchange surface area. More contact area means that more heat can be transferred between the heat exchanger 2 and the airflow in the same amount of time, thereby enhancing heat exchange efficiency.

[0046] In some embodiments, the heat exchanger 2 is a finned heat exchanger 2, which may adopt an unequal spacing design. The unequal spacing fin combination can improve the uniformity of the air field, reduce eddy noise, and improve the listening experience.

[0047] In some embodiments, an air outlet can be provided with an air supply grille that can swing up and down and rotate left and right. This design can make the airflow more uniform, and micro-perforated air supply can be used to achieve an air velocity of 0.2-0.4 m / s, thus achieving a windless effect and preventing direct blowing.

[0048] The air outlet mechanism provided in this embodiment has a measured air volume of 1035 m³ / h at a speed of 1600 rpm. The air outlet velocity is relatively high, and the air velocity on the fin's windward side is also relatively high, which can effectively improve heat exchange. The aerodynamic performance of the dual cross-flow air duct is well performed.

[0049] Specifically: The air outlet mechanism provided in this embodiment can achieve an air volume of 619.2 m³ / h when the fan speed is 1000 rpm; the previous solution had an air volume of 468.7 m³ / h.

[0050] The air outlet mechanism provided in this embodiment can achieve an air volume of 829.6 m³ / h when the fan speed is 1300 rpm; the previous solution had an air volume of 676.5 m³ / h.

[0051] The air outlet mechanism provided in this embodiment can achieve an air volume of 1035.2 m³ / h when the fan speed is 1600 rpm; the previous solution had an air volume of 845.3 m³ / h.

[0052] In summary, the air outlet mechanism provided in this embodiment can increase the air volume at the same fan speed. Specifically, compared to the previous method, the air volume can be increased by 25% at the same speed, thereby reducing noise at the same air volume by lowering the fan speed.

[0053] On the other hand, embodiments of this utility model also provide an air conditioner, including: the air outlet mechanism described in the above solution.

[0054] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. An air outlet mechanism, characterized in that, include: The air duct housing (1) has an air duct inside, and the front (101) of the air duct housing (1) has an air inlet and the two sides have air outlets. A heat exchanger (2) is disposed in the air duct and located between the air inlet and the air outlet. The heat exchanger (2) has two parts symmetrically arranged relative to the air inlet. Each part has a first end (201) and a second end (202). The first end (201) is connected to the inner wall of the back side (102) of the air duct shell (1), and the second end (202) is connected to the inner wall of the front side (101) of the air duct shell (1). The angle between the line connecting the first end (201) and the second end (202) and the inner wall of the air duct is an acute angle.

2. The air outlet mechanism according to claim 1, characterized in that, The angle between the line connecting the first end (201) and the second end (202) of the heat exchanger (2) and the inner wall of the air duct is 20±10°.

3. The air outlet mechanism according to claim 1, characterized in that, The heat exchanger (2) has two symmetrical sets, and there is a partition (3) between the two sets of heat exchangers (2), and the partition (3) is located at the center of symmetry of the air outlet.

4. The air outlet mechanism according to claim 3, characterized in that, Each heat exchanger (2) has at least two rectangular structures stacked together.

5. The air outlet mechanism according to claim 1, characterized in that, The cross-section of the air duct housing (1) is rectangular, and its thickness in the direction of the air inlet is <160mm.

6. The air outlet mechanism according to claim 1, characterized in that, The angle between the orientation of the air outlet and the orientation of the air inlet is less than 90°.

7. The air outlet mechanism according to claim 1, characterized in that, An air guide plate (4) is provided at the air outlet, and the air guide plate (4) has an arc-shaped section.

8. The air outlet mechanism according to claim 7, characterized in that, The heat exchanger (2) has an arc-shaped structure. The two ends of the arc-shaped structure are connected to the inner wall of the front (101) of the air duct shell (1) respectively, and the outer arc surface of the arc-shaped structure is connected to the inner wall of the back (102) of the air duct shell (1).

9. The air outlet mechanism according to any one of claims 1-8, characterized in that, A cross-flow fan (5) is provided at the air outlet. The distance between the inlet of the cross-flow fan (5) and the heat exchanger (2) is in the range of 0.8d-1.6d, where d is the impeller diameter.

10. An air conditioner, characterized in that, include: The air outlet mechanism according to any one of claims 1-9.

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