Indoor unit and heating and ventilation device

Abstract

Embodiments of the present application disclose an indoor unit and a heating and ventilation equipment. The indoor unit comprises a shell and an air outlet flange. The shell is provided with an air outlet. The air outlet flange comprises two first flanges and two second flanges. The two first flanges are oppositely and spacedly arranged, and are fixed relative to the shell. The two second flanges are oppositely and spacedly arranged, and are fixed relative to the shell. Two first flanges and two second flanges are combined to enclose the air outlet. At least part of the first flange is flexible. When the second flange is fixed relative to the shell, the first flange is pressed to seal with the first flange. The first flange and the second flange of the embodiments of the present application do not need to be fixed by screws, but can be directly pressed to realize sealing. When the second flange is fixed relative to the shell, the first flange is pressed synchronously, that is, the assembly process is not increased to realize the pressing sealing of the second flange and the first flange. Therefore, the assembly efficiency of the air outlet flange is improved.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and more particularly to an indoor unit and HVAC equipment. Background Technology

[0002] The indoor unit's air outlet is usually equipped with a flange structure, which serves to seal the circumference of the air outlet.

[0003] In related technologies, the flange structure at the air outlet includes two upper and lower flanges and two left and right flanges. During assembly, the left and right flanges and the upper and lower flanges are first connected with bolts to form a sealing frame. Then, the sealing frame is fitted onto the air outlet of the casing, and the left and right flanges and the upper and lower flanges are all connected to the casing with bolts. This results in complex installation and low installation efficiency. Utility Model Content

[0004] This application provides an indoor unit and HVAC equipment to improve the problems of complex installation and low installation efficiency of the flange structure of the air outlet in related technologies.

[0005] This application provides an indoor unit, including: The casing is equipped with an air outlet; and, An air outlet flange includes two first flanges and two second flanges. The two first flanges are arranged opposite to each other and spaced apart, and the first flanges are fixed relative to the housing. The two second flanges are arranged opposite to each other and spaced apart, and the second flanges are fixed relative to the housing. The two first flanges and the two second flanges together surround the air outlet. Wherein, at least a portion of the first flange is flexible, and when the second flange is fixed relative to the housing, it presses against the first flange to seal between them.

[0006] In some embodiments, the two first flanges are positioned opposite each other and spaced apart along a third direction, and the first flanges are bonded to the housing.

[0007] In some embodiments, the following are included: The locking component comprises two second flanges arranged opposite to each other and spaced apart along a first direction, each second flange having a first mounting hole, and the housing having a second mounting hole. The locking component passes through the first mounting hole and the second mounting hole and connects the second flange to the housing. The first direction intersects with the third direction.

[0008] In some embodiments, one of the second flange and the housing is provided with a positioning post, and the other is provided with a positioning hole, with the positioning post inserted into the positioning hole.

[0009] In some embodiments, the first flange extends along the first direction, the first mounting hole and the second mounting hole both extend along the first direction, and the second flange presses against the first flange along the first direction.

[0010] In some embodiments, the second flange protrudes from both ends along its extension direction toward the first flange to form protrusions that press against the first flange.

[0011] In some embodiments, the second flange includes: The first connecting plate is fitted and connected to the housing; and The second connecting plate is connected to the first connecting plate and is set at an angle to the first connecting plate. Along the axial direction of the air outlet flange, the second connecting plate is closer to the edge of the air outlet than the first connecting plate; along the radial direction of the air outlet flange, the second connecting plate is farther away from the air outlet than the first connecting plate.

[0012] In some embodiments, the first connecting plate is provided with a first mounting hole, a positioning post, and a protrusion.

[0013] In some embodiments, the second flange includes a reinforcing rib located in the area enclosed by the first connecting plate and the second connecting plate, and connecting the first connecting plate and the second connecting plate.

[0014] In some embodiments, the air outlet flange includes a flexible layer located on the side of the second connecting plate away from the first connecting plate along the axial direction of the air outlet flange, and in contact with the second connecting plate.

[0015] In some embodiments, the indoor unit further includes an air outlet panel, the housing is provided with an opening, the air outlet is provided at the opening, the air outlet panel is provided with a vent, the air outlet panel covers the opening and the vent communicates with the air outlet, and the air outlet panel presses against the flexible layer and the first flange to seal with the air outlet flange.

[0016] In some embodiments, the first flange comprises EVA foam.

[0017] This application provides a heating, ventilation, and air conditioning (HVAC) device, including the indoor unit described above.

[0018] The indoor unit and HVAC equipment of this application embodiment are designed such that at least a portion of the first flange in the air outlet flange is flexible, and when the second flange is fixed relative to the housing, the first flange is squeezed to seal between them. In this way, the first flange and the second flange do not need to be fixed with screws, but can be sealed by direct squeezing. Moreover, when the second flange is fixed relative to the housing, the first flange is squeezed simultaneously. That is, no additional assembly process is added to achieve the squeezing seal between the second flange and the first flange. This is beneficial to improving the assembly efficiency of the air outlet flange. Attached Figure Description

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

[0020] Figure 1 This is a partial structural schematic diagram of an indoor unit provided in some embodiments of this application; Figure 2 yes Figure 1 A partial structural schematic diagram of the indoor unit is shown; Figure 3 yes Figure 2 A schematic diagram of the exploded structure; Figure 4 yes Figure 2 Enlarged schematic diagram of the structure at point A; Figure 5 yes Figure 1 A partial structural schematic diagram of the indoor unit is shown; Figure 6 yes Figure 1 A partial structural diagram of the indoor unit is shown.

[0021] Explanation of reference numerals in the attached figures: 1. Indoor unit; 10. Housing; 11. Top cover; 12. First sealing plate; 13. Second sealing plate; 14. Water discharge plate; 15. Opening; 111. Air outlet; 112. Second mounting hole; 113. Positioning hole; 20. Air outlet flange; 21. First flange; 22. Second flange; 221. First connecting plate; 2211. First mounting hole; 2212. Positioning post; 2213. Protrusion; 222. Second connecting plate; 223. Reinforcing rib; 23. Flexible layer; 30. Air outlet panel; 31. Ventilation vent; x, first direction; y, second direction; z, third direction. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0023] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0024] This application provides a heating, ventilation, and air conditioning (HVAC) system. HVAC systems are diverse, including air conditioners, multi-split systems, heat pumps, and water heaters, used to cool or heat indoor environments and regulate indoor temperature. The HVAC system includes an indoor unit and an outdoor unit, which are connected via refrigerant piping. The indoor unit can be a ducted air conditioner.

[0025] Please see Figures 1 to 3 The indoor unit 1 is roughly rectangular in shape, with length, width and height directions.

[0026] The indoor unit 1 includes a casing 10, and the casing 10 is provided with an air outlet 111.

[0027] The housing 10 includes a top cover 11, a first sealing plate 12, a second sealing plate 13, and a drain plate 14. The top cover 11 and the drain plate 14 are opposite to each other and spaced apart along the height direction. The first sealing plate 12 and the second sealing plate 13 are opposite to each other and spaced apart along the length or width direction. The top cover 11, the first sealing plate 12, the second sealing plate 13, and the drain plate 14 together form an air outlet 111.

[0028] The indoor unit 1 includes an air outlet flange 20, which surrounds an air outlet 111 and is used to seal the periphery of the air outlet 111.

[0029] The air outlet flange 20 is used to seal the junction of the top cover 11 and the first sealing plate 12 at the air outlet 111, the junction of the top cover 11 and the second sealing plate 13 at the air outlet 111, the junction of the water discharge plate 14 and the first sealing plate 12 at the air outlet 111, and the junction of the water discharge plate 14 and the second sealing plate 13 at the air outlet 111.

[0030] The indoor unit 1 also includes an air outlet panel 30, the housing 10 is provided with an opening 15, the air outlet 111 is provided at the opening 15, the air outlet panel 30 is provided with a vent 31, the air outlet panel 30 covers the opening 15, and the vent 31 is connected to the air outlet 111, and the air outlet panel 30 is sealed to the air outlet flange 20.

[0031] The air outlet flange 20 seals the periphery of the air outlet 111, and the air outlet panel 30 is also sealed to the air outlet flange 20. This allows the airflow flowing through the air outlet 111 to be transmitted along a preset path, for example, directly from the air outlet 111 through the ventilation opening 31 of the air outlet panel 30 to the outside of the indoor unit 1, instead of wandering around inside the casing 10.

[0032] An insulation layer is provided on the inner side of the air outlet panel 30, and the insulation layer is positioned away from the vent 31. The insulation layer reduces the temperature transfer efficiency between the inner and outer sides of the air outlet panel 30. Therefore, when the temperature on the inner side of the air outlet panel 30 is very low, the temperature on the outer side of the air outlet panel 30 will not be very low, and the air on the outer side of the air outlet panel 30 is less likely to condense and drip due to cold air. The insulation layer can be made of insulating cotton, and there are no restrictions on its application.

[0033] Next, see Figures 2 to 6 The air outlet flange 20 is described in detail.

[0034] The air outlet flange 20 includes two first flanges 21 and two second flanges 22. The two first flanges 21 are positioned opposite each other and spaced apart, and are fixed relative to the housing 10. The two second flanges 22 are positioned opposite each other and spaced apart, and are fixed relative to the housing 10. The two first flanges 21 and the two second flanges 22 together surround the air outlet 111. At least a portion of the first flanges 21 is flexible, and when the second flanges 22 are fixed relative to the housing 10, they compress the first flanges 21 to create a seal between them.

[0035] In this embodiment of the application, at least a portion of the first flange 21 in the air outlet flange 20 is flexible. When the second flange 22 is fixed relative to the housing 10, it compresses the first flange 21 to seal it. Thus, the first flange 21 and the second flange 22 do not need to be fixed with screws; a seal can be achieved by direct compression. Furthermore, when the second flange 22 is fixed relative to the housing 10, the first flange 21 is compressed simultaneously. That is, no additional assembly process is required to achieve the compression seal between the second flange 22 and the first flange 21. This improves the assembly efficiency of the air outlet flange 20.

[0036] Two first flanges 21 are arranged opposite each other and spaced apart along a third direction z. The third direction z can be along the height direction of the indoor unit 1, in which case the two first flanges 21 are arranged on the upper and lower sides of the air outlet 111.

[0037] The first flange 21 extends generally along the first direction x. The first flange 21 is generally elongated and has a simple structure. The first direction x intersects with the third direction z. The first direction x can be along the length or width of the indoor unit 1, etc. In the embodiment of this application, the first direction x, the second direction y, and the third direction z are perpendicular to each other, the first direction x is along the length of the indoor unit 1, and the second direction y is along the width of the indoor unit 1.

[0038] The cross-section of the first flange 21 is approximately the same at all points along its extension direction and is rectangular.

[0039] The first flange 21 is bonded to the housing 10. The two first flanges 21 are arranged on the upper and lower sides of the air outlet 111, and the first flanges 21 on the upper and lower sides are bonded to the housing 10. Compared with the screw fixing connection in related technologies, the connection is more convenient.

[0040] One of the two first flanges 21 is used to fit and bond to the drain plate 14, and the other is used to fit and bond to the top cover 11.

[0041] The first flange 21 can be partially flexible or entirely flexible. If the first flange 21 is entirely flexible and is on the side of the air outlet panel 30, it is advantageous to be squeezed by the air outlet panel 30 and thus seal with the air outlet panel 30.

[0042] The first flange 21 includes EVA foam. Compared to existing sheet metal, EVA foam has properties such as flexibility and fire resistance, meeting the requirements for compression sealing and fire protection. The first flange 21 can be made entirely of EVA foam. Alternatively, other flexible and fire-resistant materials can be used for the first flange 21; there are no restrictions on this.

[0043] Two second flanges 22 are arranged opposite each other and spaced apart along the first direction x. If the first direction x is along the length of the indoor unit 1, the two second flanges 22 are arranged on the left and right sides of the air outlet 111.

[0044] The second flange 22 extends along the third direction z.

[0045] The second flange 22 is provided with a first mounting hole 2211, and the housing 10 is provided with a second mounting hole 112. The indoor unit 1 includes a locking member (not shown in the figure), which passes through the first mounting hole 2211 of the second flange 22 and the second mounting hole 112 of the housing 10, and connects the second flange 22 to the housing 10. When the locking member fixes the second flange 22 and the housing 10, it can cause the second flange 22 to press against the first flange 21, thereby achieving a compression seal between the second flange 22 and the first flange 21.

[0046] One of the two second flanges 22 is fitted to the first sealing plate 12 and connected by a locking element, and the other is fitted to the second sealing plate 13 and connected by a locking element.

[0047] The first mounting hole 2211 and the second mounting hole 112 both extend in the first direction x. The second flange 22 presses against the first flange 21 in the first direction x. Since the first mounting hole 2211 and the second mounting hole 112 both extend in the first direction x, the locking member passing through the first mounting hole 2211 and the second mounting hole 112, when fixing the second flange 22 to the housing 10, has its fixing direction approximately in the first direction x, which is approximately consistent with the extension direction of the first flange 21. This facilitates pressing against the first flange 21, thereby achieving a better compression seal between the second flange 22 and the first flange 21.

[0048] The second flange 22 may have one first mounting hole 2211 or multiple first mounting holes 2211 spaced apart along its extension direction. In this embodiment, the second flange 22 has two first mounting holes 2211, and the two first mounting holes 2211 are located at both ends of the second flange 22 along its extension direction, so that each first mounting hole 2211 is adjacent to a first flange 21, and when a locking member is inserted and fixed in the first mounting hole 2211, the corresponding side of the first flange 21 is squeezed and sealed.

[0049] One of the second flange 22 and the housing 10 is provided with a positioning pin 2212, and the other is provided with a positioning hole 113. The positioning pin 2212 is inserted into the positioning hole 113. The positioning pin 2212 and the positioning hole 113 enable the second flange 22 and the housing 10 to be pre-positioned before being fixed by the locking device. This improves the installation efficiency of the locking device and avoids the second flange 22 from rotating or shifting relative to the housing 10 during the installation of the locking device.

[0050] The number of positioning pins 2212 can be one or multiple pins spaced apart along the extension direction of the second flange 22. In this embodiment, the number of positioning pins 2212 is two, and the two positioning pins 2212 are located at both ends of the second flange 22 along its extension direction, so that each positioning pin 2212 is adjacent to a first mounting hole 2211, which can accurately pre-fix the position of the corresponding first mounting hole 2211 so as to install and fix the locking member.

[0051] Along the extension direction of the second flange 22, the two positioning pins 2212 are located outside the two first mounting holes 2211, so that the two first mounting holes 2211 are not located too far to the side, so that the locking parts are not easily obstructed by the housing 10 when they are installed and fixed.

[0052] The second flange 22 and the housing 10 are provided with a positioning post 2212 and a positioning hole 113, respectively. Alternatively, the second flange 22 can be provided with a positioning post 2212 and the housing 10 can be provided with a positioning hole 113; or the housing 10 can be provided with a positioning post 2212 and the second flange 22 can be provided with a positioning hole 113.

[0053] In this embodiment, the second flange 22 is provided with a positioning post 2212, and the housing 10 is provided with a positioning hole 113. Since the second flange 22 is smaller in structure than the housing 10 and the assembly step is later, it is simpler to design a protruding positioning post 2212 on the second flange 22, and the positioning post 2212 is less likely to interfere with the assembly of other components.

[0054] The second flange 22 protrudes from both ends along its extension direction toward the first flange 21 to form protrusions 2213, which press against the first flange 21. The protrusions 2213 of the second flange 22 are designed to press against the first flange 21, which is more conducive to pressing against the first flange 21 and deforming the first flange 21 to achieve a seal.

[0055] The second flange 22 includes a first connecting plate 221 and a second connecting plate 222. The first connecting plate 221 is fitted and connected to the housing 10. The second connecting plate 222 is connected to the first connecting plate 221 and is set at an angle to the first connecting plate 221. Along the axial direction of the air outlet flange 20, the second connecting plate 222 is closer to the edge of the air outlet 111 than the first connecting plate 221; along the radial direction of the air outlet flange 20, the second connecting plate 222 is farther away from the air outlet 111 than the first connecting plate 221. That is, in addition to the first connecting plate 221 fitted and connected to the housing 10, the second flange 22 also includes the second connecting plate 222 adjacent to the edge of the air outlet 111, which facilitates a sealing connection between the second connecting plate 222 and the air outlet panel 30.

[0056] The second flange 22 is provided with a first mounting hole 2211, a positioning post 2212 and a protrusion 2213, which can be: the first connecting plate 221 is provided with a first mounting hole 2211, a positioning post 2212 and a protrusion 2213.

[0057] Both the first connecting plate 221 and the second connecting plate 222 extend along the third direction z.

[0058] The first connecting plate 221 and the second connecting plate 222 can be set at approximately a 90° angle, and there is no limitation on this.

[0059] The second flange 22 includes a reinforcing rib 223, which is located in the area enclosed by the first connecting plate 221 and the second connecting plate 222, and connects the first connecting plate 221 and the second connecting plate 222. The reinforcing rib 223 helps to improve the structural strength of the second flange 22.

[0060] The second flange 22 can be made of flame-retardant materials such as hard plastic or sheet metal, and there are no restrictions on this.

[0061] The air outlet flange 20 includes a flexible layer 23. Along the axial direction of the air outlet flange 20, the flexible layer 23 is located on the side of the second connecting plate 222 away from the first connecting plate 221 and is in contact with the second connecting plate 222. The flexible layer 23 facilitates the contact between the second flange 22 and the air outlet panel 30 on the air outlet panel 30 side through the flexible layer 23, and the flexible layer 23 is also conducive to being compressed by the air outlet panel 30, thus sealing with the air outlet panel 30.

[0062] The assembly steps of the air outlet flange 20 in this embodiment include: bonding and fixing the first flange 21 to the housing 10; fixing the second flange 22 to the housing 10 using a locking member, and while the locking member is fixing the second flange 22, causing the second flange 22 to press against the first flange 21, thereby achieving a seal between the second flange 22 and the first flange 21. Compared with the related art where the air outlet flange is first screwed together with the left and right flanges and the upper and lower flanges to form a sealing frame, and then the sealing frame is fitted onto the air outlet of the housing and the left and right flanges and the upper and lower flanges are screwed together with the housing, the assembly steps of the air outlet flange 20 in this embodiment save the step of screwing together the left and right flanges and the upper and lower flanges to form a sealing frame, making the assembly more convenient and faster.

[0063] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" means at least two, for example, two, three, four, etc. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0064] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. An indoor unit, characterized in that, include: The casing is equipped with an air outlet; and, An air outlet flange includes two first flanges and two second flanges. The two first flanges are arranged opposite to each other and spaced apart, and the first flanges are fixed relative to the housing. The two second flanges are arranged opposite to each other and spaced apart, and the second flanges are fixed relative to the housing. The two first flanges and the two second flanges together surround the air outlet. Wherein, at least a portion of the first flange is flexible, and when the second flange is fixed relative to the housing, it presses against the first flange to seal between them.

2. The indoor unit according to claim 1, characterized in that, The two first flanges are arranged opposite each other and spaced apart along a third direction, and the first flanges are bonded to the housing.

3. The indoor unit according to claim 2, characterized in that, include: The locking component comprises two second flanges arranged opposite to each other and spaced apart along a first direction, each second flange having a first mounting hole, and the housing having a second mounting hole. The locking component passes through the first mounting hole and the second mounting hole and connects the second flange to the housing. The first direction intersects with the third direction.

4. The indoor unit according to claim 3, characterized in that, The second flange and the housing are provided with a positioning post on one of them and a positioning hole on the other, with the positioning post inserted into the positioning hole.

5. The indoor unit according to claim 3, characterized in that, The first flange extends along the first direction, and the extension directions of the first mounting hole and the second mounting hole are both along the first direction. The second flange presses against the first flange along the first direction.

6. The indoor unit according to claim 1, characterized in that, The second flange protrudes from both ends along its extension direction toward the first flange to form protrusions that press against the first flange.

7. The indoor unit according to claim 1, characterized in that, The second flange includes: The first connecting plate is fitted and connected to the housing; and The second connecting plate is connected to the first connecting plate and is set at an angle to the first connecting plate. Along the axial direction of the air outlet flange, the second connecting plate is closer to the edge of the air outlet than the first connecting plate; along the radial direction of the air outlet flange, the second connecting plate is farther away from the air outlet than the first connecting plate.

8. The indoor unit according to claim 7, characterized in that, The first connecting plate is provided with a first mounting hole, a positioning post and a protrusion; And / or, the second flange includes a reinforcing rib located in the area enclosed by the first connecting plate and the second connecting plate, and connecting the first connecting plate and the second connecting plate.

9. The indoor unit according to claim 7, characterized in that, The air outlet flange includes: A flexible layer is located along the axial direction of the air outlet flange, on the side of the second connecting plate away from the first connecting plate, and is in contact with the second connecting plate.

10. The indoor unit according to claim 9, characterized in that, The indoor unit also includes: An air outlet panel is provided. The housing has an opening, and the air outlet is located at the opening. The air outlet panel has a ventilation opening. The air outlet panel covers the opening, and the ventilation opening is connected to the air outlet. The air outlet panel presses against the flexible layer and the first flange to seal with the air outlet flange.

11. The indoor unit according to any one of claims 1 to 9, characterized in that, The first flange includes EVA foam.

12. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, Including the indoor unit as described in any one of claims 1 to 11.

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