Indoor unit and heating and ventilation equipment

Abstract

The indoor unit comprises a shell, a wind wheel and a motor, a heat exchange air duct and a heat dissipation air duct are formed in the shell, and an air return opening and an air outlet which communicate with the heat exchange air duct and an air inlet and an air outlet which communicate with the heat dissipation air duct are formed in the shell; the wind wheel is arranged in the heat exchange air duct; the motor is arranged in the heat dissipation air duct and is in transmission connection with the wind wheel; wherein the air inlet communicates with the heat dissipation air channel and the outside, the air outlet communicates with the heat dissipation air channel and the heat exchange air channel, and according to the technical scheme, heat generated by the motor can be effectively discharged.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning equipment, and in particular to an indoor unit and a heating and ventilation equipment using the indoor unit. Background Art

[0002] In the indoor unit, the drive motor is coaxially arranged at one end of the wind wheel and drives the wind wheel to rotate. During long-term use, the drive motor will generate a lot of heat, and the drive motor is arranged inside the indoor unit, which makes it difficult to quickly and conveniently dissipate the heat. This will cause the drive performance of the drive motor to decline and shorten its service life. Utility Model Content

[0003] The embodiments of the present application provide an indoor unit and HVAC equipment, which can effectively discharge the heat generated by the motor.

[0004] In the first aspect, an embodiment of the present application provides an indoor unit, comprising a shell, a wind wheel and a motor, wherein a heat exchange air duct and a heat dissipation air duct are formed in the shell, and a return air port and an air outlet connected to the heat exchange air duct and an air inlet and an air outlet connected to the heat dissipation air duct are provided; the wind wheel is arranged in the heat exchange air duct; the motor is arranged in the heat dissipation air duct and is transmission-connected to the wind wheel; wherein the air inlet is connected to the heat dissipation air duct and the outside, and the air outlet is connected to the heat dissipation air duct and the heat exchange air duct.

[0005] In a possible implementation, it further includes a heat exchanger disposed in the heat exchange air duct, wherein the heat exchanger is located between the wind wheel and the return air port;

[0006] The air outlet is communicated with a cavity of the heat exchange air duct located between the wind wheel and the air outlet side of the heat exchanger.

[0007] In a possible implementation, it further includes a heat exchanger disposed in the heat exchange air duct, wherein the heat exchanger is located between the wind wheel and the return air port;

[0008] The heat exchange air duct includes a return air area connected to the air inlet side of the heat exchanger and the return air port, and the air outlet is connected to the return air area.

[0009] In a possible implementation, a filtering device is further included, which is connected to the shell and located at the return air outlet. In the direction from the return air outlet to the air inlet side of the heat exchanger, there is a gap between the air outlet and the filtering device.

[0010] In a possible implementation, the heat dissipation air duct and the heat exchange air duct are arranged in parallel.

[0011] In a possible implementation, the housing includes a volute, a water receiving tray, and an outer shell. The volute and the water receiving tray are disposed inside the outer shell, and the impeller is installed on the volute.

[0012] Opposite sides of the heat exchanger respectively abut against the volute and the water receiving tray, and the outer shell, the volute, the heat exchanger, and the water receiving tray cooperate to enclose the heat dissipation air duct.

[0013] The outer shell is provided with the air inlet, and the air inlet is arranged in the horizontal direction.

[0014] In a possible implementation, an air inlet grille is covered at the air inlet.

[0015] In a possible implementation, it further includes a motor mounting bracket connected to the volute. The motor mounting bracket is located inside the heat dissipation air duct and is provided with a mounting space for mounting the motor.

[0016] Wherein, a plurality of heat dissipation holes are provided on the motor mounting bracket at intervals and communicate the mounting space and the heat dissipation air duct.

[0017] In a possible implementation, an outer wall surface of the motor mounting bracket abuts against an inner wall surface of the heat dissipation air duct to divide the heat dissipation air duct into an air inlet area communicating with the air inlet and an air outlet area communicating with the heat exchange air duct.

[0018] Wherein, some of the heat dissipation holes communicate the air inlet area and the mounting space, and some of the heat dissipation holes communicate the mounting space and the air outlet area.

[0019] In a possible implementation, the motor mounting bracket includes a motor mounting seat and a motor cover plate detachably connected to the motor mounting seat. The motor mounting seat and the motor cover plate enclose to form the mounting space.

[0020] Wherein, the motor mounting seat and the volute are integrally formed components.

[0021] In a possible implementation, a side plate is provided between the volute and the motor mounting seat. The heat exchanger abuts against one end of the side plate away from the impeller. An air outlet is provided on the side plate, and the air outlet is located between the impeller and the heat exchanger.

[0022] The indoor unit based on the embodiment of the present application is provided with a heat exchange air duct and a heat dissipation air duct inside the housing. The heat exchange air duct and the heat dissipation air duct are communicated, and the air wheel is arranged in the heat exchange air duct, and the motor is arranged in the heat dissipation air duct. When the air wheel continuously sucks the outside air from the return air inlet into the heat exchange air duct, a certain negative pressure effect will be generated. And the air outlet of the heat dissipation air duct is arranged adjacent to the return air inlet. Thus, part of the air, driven by the negative pressure environment, enters the heat dissipation air duct from the air inlet, flows to the air outlet, and then enters the heat exchange air duct. Thus, while the motor drives the air wheel to work, the negative pressure environment generated by the operation of the air wheel enables the air in the heat dissipation air duct to circulate, and thus the motor can be effectively cooled, improving the service life of the motor.

[0023] In a second aspect, the embodiment of the present application provides a heating, ventilation and air conditioning (HVAC) system, including the above-mentioned indoor unit and an outdoor unit, and the outdoor unit and the indoor unit form a circulation flow path. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0025] Figure 1 FIG. 12 is a schematic structural diagram of an indoor unit according to an embodiment of the present invention;

[0026] Figure 2 FIG. 16 is a first exploded view of an indoor unit according to an embodiment of the present invention;

[0027] Figure 3 FIG. 20 is a second exploded view of an indoor unit according to an embodiment of the present invention;

[0028] Figure 4 FIG. 24 is a side view of an indoor unit according to an embodiment of the present invention;

[0029] Figure 5 For Figure 4 the cross-sectional view taken along line A-A in

[0030] Figure 6 For Figure 4 the cross-sectional view taken along line B-B in

[0031] Figure 7 For Figure 4 the cross-sectional view taken along line C-C in

[0032] Figure 8 FIG. 46 is a schematic structural diagram of an indoor unit according to an embodiment of the present invention after removing the top plate and part of the side enclosure panels.

[0033] Description of the reference numerals in the drawings:

[0034] 1. Indoor unit; 100. Housing; 110. Volute; 120. Water receiving tray; 130. Outer shell; 131. Top plate; 132. Side enclosure; 1321. First side plate; 1322. Second side plate; 140. Heat exchange air duct; 141. Return air inlet; 142. Air outlet; 150. Heat dissipation air duct; 150b. Inner wall surface; 151. Air inlet; 152. Air outlet; 153. Air inlet area; 154. Air outlet area; 160. Return air area; 200. Impeller; 300. Motor; 400. Heat exchanger; 500. Motor mounting bracket; 500a. Outer wall surface; 510. Motor mounting seat; 520. Motor cover plate; 530. Installation space; 540. Heat dissipation holes; 511. First baffle; 512. Second baffle; 600. Side plate.

[0035] The realization of the purpose of this application, functional features and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0036] To make the purpose, technical solutions and advantages of this application clearer, the following will further describe the embodiments of this application in detail in conjunction with the accompanying drawings.

[0037] When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with this application. On the contrary, they are only examples of the devices and methods that are consistent with some aspects of this application as detailed in the appended claims.

[0038] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the description of this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0040] An embodiment of this application provides an indoor unit 1 and a heating, ventilation, and air conditioning (HVAC) system. The HVAC system includes the indoor unit 1 and an outdoor unit. The indoor unit 1 is connected to the outdoor unit through modules such as a circuit module and a pipeline module to operate jointly to regulate the indoor environment. Shown in Figure 1 and Figure 3 is the indoor unit 1. The indoor unit 1 includes a housing 100, a blower wheel 200, a motor 300, and a heat exchanger 400.

[0041] Taking Figure 1 the coordinate system in as an example, in the following description, the up-down direction ZZ, the length direction YY, and the width direction XX are defined. The up-down direction ZZ, the length direction YY, and the width direction XX are perpendicular to each other pairwise.

[0042] Please refer to Figures 4 to 6 simultaneously. Inside the housing 100, a heat exchange air duct 140 and a heat dissipation air duct 150 are formed. At the same time, an air return opening 141 and an air outlet 142 communicating with the heat exchange air duct 140, and an air inlet 151 and an air outlet 152 communicating with the heat dissipation air duct 150 are provided. The blower wheel 200 and the heat exchanger 400 are arranged in the heat exchange air duct 140, where the heat exchanger 400 is located between the blower wheel 200 and the air return opening 141. The motor 300 is arranged in the heat dissipation air duct 150 and is used to drive the blower wheel 200 to rotate.

[0043] In some structural forms, please refer to Figure 7 simultaneously. The heat exchange air duct 140 and the heat dissipation air duct 150 extend in the length direction YY and are arranged in parallel in the width direction XX. The air inlet 151 communicates the heat dissipation air duct 150 with the outside, and the air outlet 152 communicates the heat dissipation air duct 150 with the heat exchange air duct 140.

[0044] During operation, the wind wheel 200 drives the external air flow to enter the heat exchange air duct 140 from the air return opening 141. After passing through the heat exchanger 400, the performance of the air flow such as temperature or humidity is adjusted, and then it flows to the indoor environment through the air outlet 142, so as to achieve the purpose of adjusting the indoor air. During the operation of the indoor unit 1, the outdoor unit compresses the refrigerant through the compressor, transports the refrigerant to the heat exchanger 400 of the indoor unit 1 through the circulation flow path. The wind wheel 200 drives the air flow to enter the heat exchange air duct 140 from the air return opening 141 and exchanges heat with the heat exchanger 400. After the refrigerant exchanges heat with the air in the heat exchange cavity, it flows out of the indoor unit 1 and returns to the compressor of the outdoor unit, and is compressed by the compressor again to a predetermined temperature and pressure, so as to carry out a new round of refrigerant cycle again.

[0045] It can be understood that when the wind wheel 200 continuously sucks the external air into the heat exchange air duct 140 from the air return opening 141, a certain negative pressure effect will be generated. The air outlet 152 communicates with the heat dissipation air duct 150 and the heat exchange air duct 140. Thus, part of the air is driven by the negative pressure environment, enters the heat dissipation air duct 150 from the air inlet 151, flows to the air outlet 152, and then enters the heat exchange air duct 140. In this application, the motor 300 is arranged in the heat dissipation air duct 150. During the process of the air flow passing through the motor 300, the heat generated by the motor 300 can be taken away to effectively dissipate the heat of the motor 300 and improve the service life of the motor 300. By setting the heat dissipation air duct 150 and connecting the air outlet 152 of the heat dissipation air duct 150 to the heat exchange air duct 140 in the embodiment of this application, the air flow speed in the heat dissipation air duct 150 can be increased, the heat transfer efficiency can be improved, the heat generated by the motor 300 can be effectively discharged quickly, and the influence of overheating on the performance and service life of the motor 300 can be avoided.

[0046] Please refer to Figure 2 and Figure 3, the housing 100 includes a volute 110, a water receiving tray 120, and an outer shell 130. In some structural forms, the outer shell 130 includes a top plate 131 and side enclosing plates 132 surrounding the periphery of the top plate 131. The side enclosing plates 132 extend in the up and down direction YY. Thus, an installation cavity is formed inside the outer shell 130. The volute 110 and the water receiving tray 120 are installed in the installation cavity inside the outer shell 130. The volute 110 includes a volute body and a side plate 600 connected to the volute body and located on one side in the axial direction of the impeller 200. And the impeller 200 is installed on the volute body. The side plate 600 of the volute 110 and the water receiving tray 120 respectively abut against opposite sides of the side plate of the heat exchanger 400. The impeller 200 is installed on the volute 110, which can enhance the impeller 200 effect, causing the air to generate disturbance and rotation when flowing through the volute 110, thereby increasing the air flow rate and pressure and improving the heat exchange efficiency of the heat exchanger 400. Generally, the inside of the volute 110 has a spiral surface, through which the movement direction and speed of the gas can be changed, so that the air after heat exchange with the heat exchanger 400 can be discharged through the corresponding air outlet 142.

[0047] Further, the heat dissipation air duct 150 of the embodiment of the present application is formed by the cooperation of the outer shell 130, the side plate 600 of the volute 110, the side plate of the heat exchanger 400, and the water receiving tray 120. It can be understood that since a spiral surface is provided inside the volute 110, the outer shell 130 is a curved surface structure. Therefore, when the volute 110 is installed inside the outer shell 130, a cavity is formed between the volute 110 and the outer shell 130, and the water receiving tray 120 is located at the bottom of the whole structure and cooperates with the volute 110 and the outer shell 130 to form the heat dissipation air duct 150. Thus, based on the original structure of the indoor unit 1, only by processing an air inlet 151 on the outer shell 130, a heat dissipation air duct 150 can be formed in a partial area enclosed by the outer shell 130, the volute 110, and the water receiving tray 120, without the need to additionally process other components or install other devices to dissipate heat from the motor 300. This not only reduces the production cost but also reduces the complexity in the production process.

[0048] In some embodiments, the air outlet 152 can communicate with the heat dissipation air duct 150 and the air return opening 141. Specifically, when the heat exchanger 400 abuts against the side plate 600 on the side away from the volute body, there is a gap between the side plate 600 and the housing 130. Thus, inside the indoor unit 1, the air outlet 152 can be arranged between the front of the air inlet side of the heat exchanger 400 and the heat dissipation air duct 150. Such an arrangement can shorten the air flow path of the heat dissipation air duct 150, making the negative pressure environment generated by the impeller 200 have a greater impact on the heat dissipation air duct 150. Of course, the side plate 600 can also be in contact with the inner wall of the housing 130. Setting a certain gap between the water receiving tray 120 and the housing 130 can also form the above-mentioned air outlet 152. In another embodiment, the side plate 600 and the water receiving tray 120 can also be simultaneously in contact with the inner wall of the housing 130, and the air outlet 152 is arranged on the housing 130. Herein, the present application does not limit the specific form of the air outlet 152.

[0049] Further, the heat exchange air duct 140 includes a return air area 160 that communicates the air inlet side of the heat exchanger 400 and the air return opening 141, and the air outlet 152 communicates with the return air area 160. With such an arrangement, the air flow entering from the air outlet 152 does not directly blow onto the heat exchanger 400, but converges with the air flow entering from the air return opening 141 in the return air area 160 and then flows through the heat exchanger 400 together after flowing in the same direction. This can optimize the air flow distribution. At the same time, by providing the return air area 160, the air return volume of the indoor unit 1 can also be increased, improving the air circulation efficiency.

[0050] To improve the purity of the air entering the heat exchange air duct 140, in some embodiments, the indoor unit 1 further includes a filtering device (not shown in the figure). The filtering device can be in the form of a filter screen. The filtering device is connected to the housing 100 and is located at the air return opening 141. The outside air flow is first filtered by the filtering device and then flows into the return air area 160, that is, the filtering device of the present application is located upstream of a part of the return air area 160 in the air flow direction. Further, in the direction from the air return opening 141 to the air inlet side of the heat exchanger 400, there is a gap between the air outlet 152 and the filtering device. In this way, the air flow flowing out from the heat dissipation air duct 150 does not need to pass through the filtering device and directly enters the heat exchange air duct 140, which can reduce the air flow resistance of part of the heat dissipation air duct 150 and improve the negative pressure effect. Moreover, there is a gap between the air outlet 152 and the filtering device, so that the air flow flowing out from the heat dissipation air duct 150 does not act on the filtering device either, which is conducive to the air flow in the heat dissipation air duct 150 to circulate.

[0051] To improve the influence of the negative pressure environment generated during the operation of the wind wheel 200 on the heat dissipation air duct 150, the air outlet 152 can communicate with the space between the heat exchange air duct 140 where the wind wheel 200 and the air outlet side of the heat exchanger 400 are located. In this way, the air flow in the heat dissipation air duct 150 can be directly sucked by the wind wheel 200 without passing through the heat exchanger 400, reducing the resistance of the air flow from the heat dissipation air duct 150 into the heat exchange air duct 140 and effectively improving the heat dissipation efficiency of the heat dissipation air duct 150.

[0052] In some structural forms, the above-mentioned air outlet 152 can be arranged on the side plate 600, and the air outlet 152 is located between the air inlet side of the wind wheel 200 and the air outlet side of the heat exchanger 400. The motor 300 is located between the air inlet 151 and the air outlet. In this way, the air flow in the heat dissipation air duct 150 can be directly sucked by the wind wheel 200 through the air outlet 152 without passing through the heat exchanger 400, reducing the resistance of the air flow from the heat dissipation air duct 150 into the heat exchange air duct 140 and effectively improving the heat dissipation efficiency of the heat dissipation air duct 150.

[0053] The opening direction of the air inlet 151 in the embodiment of the present application is set in the horizontal direction, that is, the air inlet 151 is arranged on the side enclosure plate 132. It can be understood that the indoor unit 1 is generally hung and installed on the ceiling. If the air inlet 151 is arranged on the top plate 131, the air inlet 151 is arranged opposite to the ceiling, which is likely to increase the resistance of the air entering the heat dissipation air duct 150 from the air inlet 151. However, arranging the air inlet 151 on the side enclosure plate 132 can avoid the resistance with the ceiling, enabling the air to flow into the heat dissipation air duct 150 more smoothly and improving the heat dissipation efficiency of the heat dissipation air duct 150. Moreover, compared with the form of arranging the air inlet 151 on the top plate 131, arranging the air inlet 151 on the side enclosure plate 132 can also reduce the risk of dust or foreign objects entering the heat dissipation air duct 150.

[0054] Please continue to refer to Figure 2 and Figure 3, in some structural forms, the side wall panel 132 includes a first side panel 1321 spaced apart in the length direction YY and a second side panel 1322 spaced apart in the width direction XX. Among them, the volute 110, the motor 300, and the second side panel 1322 are spaced apart in the width direction XX, and the first side panel 1321 is located between the two second side panels 1322. Among them, the air inlet 151 is provided on the first side panel 1321 close to the motor 300. With such a setting, the air inlet 151 communicates with the heat dissipation air duct 150 in the length direction YY, so that after the air enters from the air inlet 151, it can flow through each surface of the motor 300, and the efficiency of air-cooling the motor 300 is higher. If the air inlet 151 is provided on the second side panel 1322 close to the motor 300, the flow direction of the air inlet 151 is perpendicular to the flow direction of the heat dissipation air duct 150, and a turning path will occur when the external air enters the heat dissipation air duct 150 from the air inlet 151, increasing the resistance of air flow.

[0055] In order to prevent large particles or small animals such as mice and insects from entering the heat dissipation air duct 150, avoid damaging the indoor unit 1, or polluting the air adjusted by the indoor unit 1. An air inlet grille (not shown in the figure) is provided at the air inlet 151. The aperture of the air inlet grille can be set according to user needs, and this application does not limit this. Of course, in some embodiments, the aperture of the air inlet 151 can also be set relatively small to block large particles or small animals from entering the heat dissipation air duct 150. In addition, in order to ensure the air intake rate of the air inlet 151, multiple air inlets 151 can be spaced apart.

[0056] To facilitate the installation of the motor 300 in the heat dissipation air duct 150, please refer to Figure 3 , the embodiment of this application further includes a motor mounting bracket 500. Among them, the motor mounting bracket 500 is connected to the volute 110 and is located in the heat dissipation air duct 150. In some structural forms, the motor mounting bracket 500 is connected to the volute 110. In this way, after the motor 300 is mounted on the motor mounting bracket 500, it is convenient to drive and connect the motor 300 and the wind wheel 200. Of course, in some other embodiments, the motor mounting bracket 500 can also be connected to the housing 130, and this application does not limit this.

[0057] In some embodiments of the present application, the motor mounting frame 500 is provided with an installation space 530, and the motor 300 is installed in the installation space 530. Among them, the motor mounting frame 500 is provided with a plurality of heat dissipation holes 540 arranged at intervals and connecting the installation space 530 and the heat dissipation duct 150. In this way, when working, under the action of the air pressure of the heat exchange duct 140, the air flow in the heat dissipation duct 150 will flow through the air inlet 151, the heat dissipation hole 540, the installation space 530, the heat dissipation hole 540 and then enter the heat exchange duct 140, thereby effectively improving the heat dissipation efficiency of the motor 300. In the embodiment of the present application, through the heat dissipation hole 540, hot air can smoothly enter the heat dissipation duct 150 from the installation space 530. In this way, it can be ensured that the fresh air in the heat dissipation duct 150 can contact the surface of the motor 300, effectively take away the heat generated by the motor 300, and prevent the hot air from being trapped in the installation space 530, resulting in heat accumulation.

[0058] The outer wall surface 500a of the motor mounting frame 500 abuts against the inner wall surface 150b of the heat dissipation duct 150 to separate the heat dissipation duct 150 into an air inlet area 153 connected to the air inlet 151 and an air outlet area 154 connected to the heat exchange duct 140. Figure 2 and, Figure 3 as well as Figure 8 The motor mounting frame 500 includes a first baffle plate 511 and a second baffle plate 512. In the height direction ZZ, the outer wall surface 500a of the first baffle plate 511 abuts against the top plate 131. In the width direction XX, the outer wall surfaces 500a on opposite sides of the first baffle plate 511 abut against the side surfaces of the volute 110 and the side panels 132, respectively, and the outer wall surface 500a of the second baffle plate 512 abuts against the side panels 132. It can be understood that the side surfaces of the volute 110, the top plate 131 and the side panels 132 respectively form part of the inner wall surfaces 150b of the heat dissipation duct 150.

[0059] Specifically, by abutting the outer wall surface 500a of the motor mounting frame 500 against the inner wall surface 150b of the heat dissipation duct 150, the airtightness of the heat dissipation duct 150 can be improved, and the heat dissipation duct 150 can also be divided into an air inlet area 153 and an air outlet area 154, wherein some heat dissipation holes 540 are connected to the air inlet area 153 and the installation space 530, and some heat dissipation holes 540 are connected to the installation space 530 and the air outlet area 154. In some structural forms, the air inlet area 153 and the air outlet area 154 can be arranged at intervals in the vertical direction. In this way, the air inlet area 153 and the air outlet area 154 are connected only through the heat dissipation holes 540. When working, under the action of the air pressure of the heat exchange duct 140, the air flow in the heat dissipation duct 150 will flow through the air inlet 151, the air inlet area 153, the installation space 530, the air outlet area 154 and then enter the heat exchange duct 140, thereby effectively improving the heat dissipation efficiency of the motor 300.

[0060] It should be noted that both the first baffle 511 and the second baffle 512 are rigid plate members. When they are abutted against the top plate 131 and the side wall plate 132 which are also rigid plate members, there are likely to be gaps, making it difficult to effectively ensure the tightness of the heat dissipation air duct 140. In some embodiments, a sealing member (not shown in the figure) can be provided between the first baffle 511 and the top plate 131 and the side wall plate 132. The sealing member can fill the gaps between the first baffle 511 and the top plate 131 and the side wall plate 132. Among them, the sealing member can be in the form of a silica gel pad, a sealing ring, etc. Here, the specific form of the sealing member is not limited in this application. Similarly, a sealing member can also be provided between the second baffle 512 and the side wall plate 132. In this case, the sealing member can also form part of the inner wall surface 150b of the heat dissipation air duct 150.

[0061] It can be understood that the outer wall surface 500a of the motor mounting bracket 500 and the inner wall surface 150b of the heat dissipation air duct 150 can be directly abutted or indirectly abutted through a sealing member.

[0062] To facilitate the installation of the motor 300 on the motor mounting bracket 500, the motor mounting bracket 500 includes a motor mounting base 510 and a motor cover plate 520. The motor cover plate 520 is detachably connected to the motor mounting base 510 and encloses to form an installation space 530 for installing the motor 300. The specific connection manner between the motor cover plate 520 and the motor 300 is not limited here. The motor cover plate 520 can be, but is not limited to, connected to the motor mounting base 510 by one or more of the methods such as screwing or clamping. Designers can make a reasonable selection according to actual needs. The motor mounting base 510 and the motor cover plate 520 cooperate to fix the motor 300.

[0063] Furthermore, the motor mounting base 510 and the volute 110 are integrally formed members. Specifically, the motor mounting base 510 and the volute 110 can be integrally formed by injection molding, or can be integrally formed by hot pressing or stamping. In this way, the connection stability between the motor mounting base 510 and the volute 110 can be improved, and the assembly efficiency can also be improved.

[0064] In some embodiments, the above-mentioned heat dissipation holes 540 are provided on both the motor mounting base 510 and the motor cover plate 520. It can be understood that the size and position of the heat dissipation holes 540 can be designed and adjusted according to actual needs. By reasonably setting the number, size and position of the heat dissipation holes 540, the heat dissipation effect can be flexibly adjusted according to the power and heat dissipation requirements of the motor 300. This application does not limit this.

[0065] Exemplarily shown in FIG. 5, the motor mounting base 510 includes a mounting base body. Among them, the above-mentioned first baffle 511 and second baffle 512 can be connected to the motor mounting base 510. Thus, the first baffle 511, the second baffle 512, the mounting base body, and the volute 110 can be an integral component. In some other embodiments, the first baffle 511 and the second baffle 512 can be connected to the motor cover plate 520, and the first baffle 511, the second baffle 512, and the motor cover plate 520 can be an integral component.

[0066] To further improve the heat dissipation efficiency of the motor 300, heat dissipation silicone (not shown in the figure) can be provided at the connection between the outer surface of the motor 300 and the motor mounting bracket 500. The heat dissipation silicone can increase the contact area between the motor 300 and the motor mounting bracket 500, thereby effectively conducting the heat generated by the motor 300 and dispersing it to the motor mounting bracket 500. During the process of air flow in the heat dissipation air duct 150, the surface of the motor mounting bracket 500 can be cooled by air, thereby avoiding the occurrence of overheating of the motor 300 and improving the service life of the motor 300.

[0067] To further improve the heat dissipation efficiency of the motor 300, a fin radiator (not shown in the figure) can be provided on the outer surface of the motor mounting bracket 500. The fin radiator has many protruding fins, which can increase the contact area between the motor mounting bracket 500 and the air in the heat dissipation air duct 150. In this way, the heat generated by the motor mounting bracket 500 is transferred to the fins and can be quickly dissipated to the surrounding air through the fins. Moreover, many small air ducts can be formed between the protruding fins of the fin radiator, causing the air to form turbulence when flowing between them, further increasing the heat dissipation effect.

[0068] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0069] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An indoor unit, characterized in that: include: A shell body having a heat exchange air duct and a heat dissipation air duct formed therein, and provided with an air return port and an air outlet communicated with the heat exchange air duct, and an air inlet and an air outlet communicated with the heat dissipation air duct; a wind wheel, arranged in the heat exchange air duct; and A motor, arranged in the heat dissipation duct and drivingly connected to the wind wheel; The air inlet is connected to the heat dissipation duct and the outside, and the air outlet is connected to the heat dissipation duct and the heat exchange duct.

2. The indoor unit according to claim 1, characterized in that: It also includes a heat exchanger disposed in the heat exchange air duct, wherein the heat exchanger is located between the wind wheel and the return air port; The air outlet is communicated with a cavity of the heat exchange air duct located between the wind wheel and the air outlet side of the heat exchanger.

3. The indoor unit according to claim 1, characterized in that: It also includes a heat exchanger disposed in the heat exchange air duct, wherein the heat exchanger is located between the wind wheel and the return air port; The heat exchange air duct includes a return air area connected to the air inlet side of the heat exchanger and the return air port, and the air outlet is connected to the return air area.

4. The indoor unit according to claim 3, characterized in that: It also includes a filtering device, which is connected to the shell and located at the return air port. In the direction from the return air port to the air inlet side of the heat exchanger, there is a gap between the air outlet and the filtering device.

5. The indoor unit according to any one of claims 2 to 4, characterized in that: The heat dissipation air duct and the heat exchange air duct are arranged in parallel.

6. The indoor unit according to claim 5, characterized in that: The housing comprises a volute, a water receiving tray and an outer shell, the volute and the water receiving tray are arranged in the outer shell, and the wind wheel is installed on the volute; The opposite sides of the heat exchanger abut against the volute and the water receiving pan respectively, and the outer shell, the volute, the heat exchanger and the water receiving pan cooperate to form the heat dissipation duct; The shell is provided with the air inlet, and the air inlet is arranged in a horizontal direction.

7. The indoor unit according to claim 6, characterized in that: The air inlet is covered with an air inlet grille.

8. The indoor unit according to claim 6, characterized in that: It also includes a motor mounting frame connected to the volute, the motor mounting frame is located in the heat dissipation duct and is provided with an installation space for installing the motor; Wherein, the motor mounting frame is provided with a plurality of heat dissipation holes which are arranged at intervals and connect the mounting space and the heat dissipation air duct.

9. The indoor unit according to claim 8, characterized in that: The outer wall surface of the motor mounting frame abuts against the inner wall surface of the heat dissipation air duct to separate the heat dissipation air duct into an air inlet area connected to the air inlet and an air outlet area connected to the heat exchange air duct; Part of the heat dissipation holes are connected to the air inlet area and the installation space, and part of the heat dissipation holes are connected to the installation space and the air outlet area.

10. The indoor unit according to claim 8 or 9, characterized in that: The motor mounting frame comprises a motor mounting seat and a motor cover plate detachably connected to the motor mounting seat, wherein the motor mounting seat and the motor cover plate enclose the mounting space; Wherein, the motor mounting seat and the volute are integrally formed components.

11. A HVAC equipment, characterized in that: The invention comprises the indoor unit and the outdoor unit according to any one of claims 1 to 10, wherein the outdoor unit and the indoor unit form a circulation flow path.

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