Indoor unit and heating and ventilation equipment

Abstract

The utility model provides an indoor unit and heating and ventilation equipment. The indoor unit comprises a shell and an electric control box, and an air duct is defined in the shell; the electric control box is installed on the shell, one part of the structure of the electric control box is in insulated connection with the shell, and the other part of the structure of the electric control box is in conductive connection with the shell. According to the indoor unit, static electricity in the electric control box can be led out.

Description

Technical Field

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

[0002] In the related art, the indoor unit includes a casing and an electric control box. The electric control box is arranged inside or outside the casing. Generally, the electric control box is in contact with and connected to the casing structure, such as a plastic part. Since there are some conductive components inside the electric control box, static electricity is easily generated inside the electric control box.

[0003] However, when the static electricity cannot be discharged in time, it will affect the performance of the electric control box, and further affect the performance of the entire indoor unit. Utility Model Content

[0004] The embodiments of the present application provide an indoor unit and HVAC equipment, which are used to solve the problem in the related art that static electricity in the electric control box cannot be discharged in time, so that the performance of the electric control box and the indoor unit is affected.

[0005] On the one hand, the present application provides an indoor unit, which includes a shell and an electrical control box, wherein an air duct is defined in the shell; the electrical control box is installed in the shell, and a part of the structure of the electrical control box is insulated and connected to the shell, and another part of the structure of the electrical control box is conductively connected to the shell.

[0006] As an optional embodiment, the air duct includes a pressure diffuser chamber; the shell includes a pressure diffuser chamber lower shell, a connecting piece and two side panels, the top surface of the pressure diffuser chamber lower shell forms the bottom wall of the pressure diffuser chamber, the two side panels are distributed at opposite ends of the shell, and the pressure diffuser chamber lower shell and any one of the two side panels are connected to the connecting piece; wherein one side of the electric control box is insulated and connected to the bottom surface of the pressure diffuser chamber lower shell, and the other side of the electric control box is conductively connected to the connecting piece.

[0007] As an optional implementation, one side of the electric control box is snap-fitted to the lower shell of the diffuser chamber, and the other side of the electric control box is connected to the connecting piece via a fastener.

[0008] As an optional embodiment, the electric control box includes a box body and an electric control board assembly, a housing cavity for accommodating the electric control board assembly is formed in the box body, and one side of the box body is clamped with the lower shell of the diffusion chamber; the electric control board assembly includes a circuit board and a grounding wire connected to the circuit board, part of the grounding wire passes through the side wall of the box body and out of the housing cavity, and is crimped onto the connector through fasteners to ground the electric control box.

[0009] As an optional embodiment, a first screw hole is opened on the circuit board, and a second screw hole is opened on the box body. The threaded fastener can pass through the first screw hole and the second screw hole to connect the electric control board assembly and the box body together; the grounding wire is connected to the first screw hole to conduct the static electricity generated by the electric control board assembly through the box body and the connector.

[0010] As an optional embodiment, the connecting member includes a first connecting portion and a second connecting portion connected in sequence; the first connecting portion extends along the bottom wall of the box body, and the first connecting portion is connected to the box body; the second connecting portion is connected to the lower shell of the diffusion chamber, and the second connecting portion extends along the lower shell of the diffusion chamber.

[0011] As an optional implementation, the first connection portion is connected to the box body via a fastener, and the second connection portion is clamped to the lower shell of the diffuser chamber.

[0012] As an optional implementation, the connecting piece is snap-connected to the lower shell of the diffuser chamber.

[0013] As an optional implementation, the indoor unit provided in the present application further includes a transition connector; two ends of the transition connector are conductively connected to the connector and the side panel respectively.

[0014] As an optional implementation, both ends of the transition connector are conductively connected to the connector and the side plate via threaded fasteners respectively.

[0015] As an optional embodiment, the indoor unit provided in the present application also includes a wind wheel, the air duct also includes a wind wheel cavity connected to the pressure diffuser cavity, and the wind wheel is arranged in the wind wheel cavity; the connecting piece is located between the wind wheel and the electric control box.

[0016] As an optional embodiment, the indoor unit provided in the present application also includes a protective grille, and the shell also includes an upper shell of the wind wheel cavity, which defines the inner wall of the wind wheel cavity; the two ends of the protective grille are respectively connected to the connecting piece and the upper shell of the wind wheel cavity.

[0017] As an optional implementation, two ends of the protective grille are respectively clamped with the connecting piece and the upper shell of the wind wheel cavity.

[0018] As an optional implementation, the electric control box is arranged at the bottom of the shell and located outside the shell.

[0019] As an optional implementation, a mounting cavity is formed at the bottom of the shell, and the electric control box is installed in the mounting cavity.

[0020] As an optional embodiment, the electric control box includes a box body and a box cover, the box body is connected to the side wall of the installation cavity, the box cover is arranged on the box body and is detachably connected to the box body, and the box cover and the box body are enclosed to form a accommodating cavity; wherein the box cover is exposed at the bottom of the shell.

[0021] On the other hand, the present application provides a HVAC device, including the above-mentioned indoor unit.

[0022] In the indoor unit and HVAC equipment provided in the embodiment of the present application, part of the structure of the electric control box is conductively connected to the shell, so that the static electricity in the electric control box can be discharged through the box body and the shell of the electric control box, which can not only improve the performance of the electric control box, but also improve the performance of the indoor unit provided in this embodiment; in addition, after the static electricity is discharged, the overall safety of the electric control box can be improved when the electric control box is inspected and repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of the indoor unit provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the three-dimensional structure of the indoor unit provided in an embodiment of the present application from another perspective;

[0026] Figure 3 An exploded view of the indoor unit provided in an embodiment of the present application;

[0027] Figure 4 A structural schematic diagram of a first partial structure of an indoor unit provided in an embodiment of the present application;

[0028] Figure 5 A structural schematic diagram of a second partial structure of an indoor unit provided in an embodiment of the present application;

[0029] Figure 6 A schematic diagram of the three-dimensional structure of the box body in the indoor unit provided in an embodiment of the present application;

[0030] Figure 7 A schematic diagram of a third partial structure of an indoor unit provided in an embodiment of the present application;

[0031] Figure 8 for Figure 7 A schematic diagram of the enlarged local structure at point A in the middle;

[0032] Fig. 9 A structural schematic diagram of a fourth partial structure of an indoor unit provided in an embodiment of the present application;

[0033] Fig.10 for Fig. 9A magnified schematic diagram of the local structure at B in the middle;

[0034] Fig.11 for Fig. 9 A magnified schematic diagram of the local structure at C in the middle;

[0035] Fig.12 A schematic diagram of the three-dimensional structure of a connector in an indoor unit provided in an embodiment of the present application;

[0036] Fig.13 for Figure 7 Schematic diagram of the structure from another perspective;

[0037] Fig.14 for Fig.13 A magnified schematic diagram of the local structure at D in the middle;

[0038] Fig.15 A structural schematic diagram of a fifth partial structure of the indoor unit provided in an embodiment of the present application;

[0039] Fig.16 for Fig.15 Enlarged schematic diagram of the local structure at point E in the middle.

[0040] Description of reference numerals:

[0041] 1. Shell; 2. Air duct; 3. Wind wheel; 4. Heat exchanger; 5. Protective grille; 6. Electric control box; 7. Screws;

[0042] 10. Indoor unit; 11. First shell; 12. Second shell; 13. Connector; 14. Transition connector; 21. Air inlet; 22. Wind wheel cavity; 23. Diffuser cavity; 24. Heat exchange cavity; 25. Air outlet; 61. Box body; 62. Box cover; 63. Electric control panel assembly; 64. Accommodating cavity;

[0043] 111, upper shell of wind wheel cavity; 112, upper shell of pressure diffuser cavity; 113, upper shell of heat exchange cavity; 114, side plate; 121, lower shell of pressure diffuser cavity; 122, water receiving tray; 123, installation cavity; 124, first clamping part; 125, second clamping part; 131, second threaded hole; 132, first connecting part; 133, second connecting part; 141, first connecting plate; 142, second connecting plate; 143, reinforcing plate; 211, inner return air outlet; 212, heat dissipation outlet; 611, first clamping hole; 612, first threaded hole; 613, second screw hole; 631, first screw hole;

[0044] 1241, connecting section; 1242, snap-on section; 1243, reinforcing rib; 1251, connecting rib; 1252, snap hook; 1331, second snap hole; 1332, third snap hole. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0046] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0047] In the related art, the indoor unit includes a casing and an electric control box, and the electric control box is arranged inside or outside the casing. Generally, the electric control box is in contact with and connected to the casing structure such as a plastic part, and since there are some conductive components inside the electric control box, static electricity is easily generated inside the electric control box. However, when the above static electricity cannot be discharged in time, it will affect the performance of the electric control box, and further affect the performance of the entire indoor unit.

[0048] Therefore, the embodiments of the present application provide an indoor unit and HVAC equipment, which can discharge static electricity in the electric control box and improve the performance of the electric control box and the indoor unit.

[0049] The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0050] See also Figures 1 to 4 , Figure 1 A three-dimensional structural diagram of an indoor unit provided in an embodiment of the present application, Figure 2 This is a schematic diagram of the three-dimensional structure of the indoor unit provided in an embodiment of the present application from another perspective. Figure 3 This is an exploded view of the indoor unit provided in the embodiment of the present application. Figure 4 This is a schematic diagram of the first partial structure of the indoor unit provided in the embodiment of the present application. Figures 1 to 4 As shown, the present embodiment provides an indoor unit 10, including a housing 1, wherein an air duct 2 is defined in the housing 1, and the air duct 2 includes an air inlet 21, a wind wheel cavity 22, a pressure diffuser cavity 23, a heat exchange cavity 24, and an air outlet 25 which are sequentially connected. In order to enable the indoor unit 10 to achieve normal cooling or heating functions, the indoor unit 10 provided in the present embodiment should also include a wind wheel 3 and a heat exchanger 4, wherein the wind wheel 3 is arranged in the wind wheel cavity 22, and the heat exchanger 4 is arranged in the heat exchange cavity 24. During operation, driven by the wind wheel 3, the airflow discharged from the air outlet side of the wind wheel 3 flows through the pressure diffuser cavity 23 and the heat exchange cavity 24 in sequence and is then discharged from the air outlet 25. When the airflow passes through the connection between the pressure diffuser cavity 23 and the heat exchange cavity 24, compared with the form of a centrifugal fan used in the related art, the airflow is less likely to swirl, and the airflow flows more smoothly, so that the airflow energy loss is less.

[0051] Specifically, the above-mentioned shell 1 includes a first shell 11 and a second shell 12 connected together, and the first shell 11 and the second shell 12 are buckled together in the up and down directions to define the above-mentioned air duct 2, and the first shell 11 is located above the second shell 12, wherein the first shell 11 includes a wind wheel cavity upper shell 111, a pressure diffuser cavity upper shell 112, a heat exchange cavity upper shell 113 connected together, and two side panels 114 arranged at intervals along the length direction of the indoor unit 10, the inner surface of the wind wheel cavity upper shell 111 defines the inner wall of the wind wheel cavity 22, the bottom surface of the pressure diffuser cavity upper shell 112 defines the cavity top wall of the pressure diffuser cavity 23, and the bottom surface of the heat exchange cavity upper shell 113 defines the cavity top wall of the heat exchange cavity 24.

[0052] Furthermore, the above-mentioned second shell 12 includes a diffuser chamber lower shell 121 and a water receiving tray 122 connected in sequence, wherein the top surface of the diffuser chamber lower shell 121 defines the bottom wall of the diffuser chamber 23, and the top surface of the water receiving tray 122 defines the bottom wall of the heat exchange chamber 24.

[0053] It should be noted that the above-mentioned up and down directions are Figures 1 to 4 The vertical direction of the indoor unit 10 is consistent with that of the indoor unit 10. Figures 1 to 3 The xx-axis direction is consistent.

[0054] Since airflow will enter the wind wheel cavity 22 through the air suction port 21 during the rotation of the wind wheel 3, in order to prevent larger foreign objects from entering the wind wheel cavity 22 through the air suction port 21, a protective grille 5 can be provided between the lower shell 121 of the diffuser cavity and the upper shell 111 of the wind wheel cavity, and the protective grille 5 covers the air suction port 21. The provision of the protective grille 5 can not only prevent larger foreign objects from entering the wind wheel cavity 22 through the air suction port 21, but also when the indoor unit 10 provided in this embodiment is inspected and repaired, it can to a certain extent prevent the wind wheel 3 from causing damage to maintenance personnel, etc., so that the protective grille 5 has a two-way protection function.

[0055] It is understandable that when it is necessary to realize the cooling or heating function, it is necessary to set up corresponding electronic control devices, such as the electronic control box 6 in this embodiment. In some optional embodiments, in order to facilitate the disassembly and assembly of the electronic control box 6, and to make the indoor unit 10 provided in this embodiment have a strong structural compactness, and to facilitate the heat dissipation of the electronic control box 6, the lower shell 121 of the diffusion chamber can be recessed upward to form an installation cavity 123, and the electronic control box 6 is located in the installation cavity 123. The air intake port 21 includes a connected inner return air port 211 and a heat dissipation port 212. The inner return air port 211 is located below the wind wheel 3, and the heat dissipation port 212 is located between the wind wheel 3 and the electronic control box 6. In this way, not only can the electric control box 6 be set on the outside of the shell 1 to facilitate the maintenance of the electric control box 6, but also the height of the indoor unit 10 does not change by forming the installation cavity 123, that is, the size of the indoor unit 10 in the up and down directions does not change. In addition, by locating the heat dissipation port 212 between the wind wheel 3 and the electric control box 6, during the rotation of the wind wheel 3, the external air flow can be sucked into the wind wheel cavity 22 through the electric control box 6 and the heat dissipation port 212 in turn, so that the heat generated on the surface of the electric control box 6 can be carried into the wind wheel cavity 22, thereby improving the performance of the electric control box 6.

[0056] Specifically, the electric control box 6 includes a box body 61, a box cover 62 and an electric control board assembly 63. The box body 61 is connected to the side wall of the installation cavity 123. The box cover 62 is set on the box body 61 and is detachably connected to the box body 61. The box cover 62 and the box body 61 form a box body of the electric control box, and the box cover 62 and the box body 61 enclose a receiving cavity 64. The electric control board assembly 63 is located in the receiving cavity 64 and is installed on the box body 61. The box cover 62 is exposed at the bottom of the housing 1. In this way, after the grille on the external return air outlet is removed, the box cover 62 can be removed and the electric control board assembly 63 can be inspected.

[0057] Among them, the box cover 62 and the box body 61 can be connected by a snap connection, or by a threaded connection, or by a combination of a snap connection and a threaded connection. In this embodiment, in order to facilitate the disassembly and assembly between the box cover 62 and the box body 61, a combination of a snap connection and a threaded connection can be adopted, which not only facilitates the disassembly and assembly between the box cover 62 and the box body 61, but also makes the connection reliability between the box cover 62 and the box body 61 stronger. Here, the connection structure of the snap connection adopted between the box cover 62 and the box body 61 is not specifically limited.

[0058] The electric control board assembly 63 can be mounted on the box body 61 by means of threaded fasteners such as screws.

[0059] Generally, some conductive components are arranged on the electric control board assembly 63, so static electricity is generated inside the electric control box 6. If the static electricity is not discharged, the performance of the electric control box 6 will be affected. Therefore, in some embodiments, a part of the structure of the electric control box 6 is insulated and connected to the housing 1, and another part of the structure of the electric control box 6 is conductively connected to the housing 1. In this way, the part of the structure of the electric control box 6 conductively connected to the housing 1 can discharge the static electricity inside the electric control box 6, so that the electric control box 6 maintains good performance.

[0060] Please continue to see Figure 5 , Figure 5 A schematic diagram of a second partial structure of an indoor unit provided in an embodiment of the present application. In some specific embodiments, in the width direction of the electric control box 6, one side of the box body 61 can be insulated and connected to the lower shell 121 of the pressure diffuser chamber, and the other side of the box body 61 is conductively connected to the housing 1.

[0061] The width direction of the electric control box 6 is Figures 1 to 4 There is a certain angle between the yy-axis direction in the diagram, that is, there is a certain angle between the installation surface of the electric control box 6 and the horizontal direction.

[0062] It should be noted that since the box body 61 is made of metal material, when the box body 61 is insulated and connected to the lower shell 121 of the diffusion chamber, it means that the lower shell 121 of the diffusion chamber is made of insulating material, such as plastic material; when the other side of the box body 61 is conductively connected to the shell 1, it means that the partial structure of the shell 1 connected to the other side of the box body 61 is made of conductive material, such as metal material.

[0063] Please continue to see Figures 6 to 8 , Figure 6 This is a schematic diagram of the three-dimensional structure of the box body in the indoor unit provided in the embodiment of the present application. Figure 7 This is a schematic diagram of the structure of the third partial structure of the indoor unit provided in the embodiment of the present application. Figure 8 for Figure 7 A schematic diagram of the enlarged local structure at A in the middle. As shown in the figure, for the side of the box body 61 that is insulated and connected to the lower shell 121 of the pressure diffuser chamber, a first clamping portion 124 can be provided on the side of the lower shell 121 of the pressure diffuser chamber facing the side wall of the box body 61, and a first clamping hole 611 clamped with the first clamping portion 124 is provided on the side wall of the box body 61, and the first clamping portion 124 is clamped with the first clamping hole 611 to connect one side of the box body 61 with the lower shell 121 of the pressure diffuser chamber.

[0064] Specifically, the first clamping portion 124 includes a connecting section 1241 and a clamping section 1242. The connecting section 1241 is connected to the lower shell 121 of the diffusion chamber. The clamping section 1242 is connected to the side of the connecting section 1241 facing the side wall of the box body 61, and the clamping section 1242 passes through the first clamping hole 611 and is clamped together with the first clamping hole 611.

[0065] In order to improve the connection reliability between the first clamping part 124 and the first clamping hole 611, and to improve the structural strength of the first clamping part 124, a reinforcing rib 1243 can be set between the clamping section 1242 and the lower shell 121 of the diffusion chamber. The setting of the reinforcing rib 1243 can not only increase the friction force between the first clamping part 124 and the first clamping hole 611, but also enhance the structural strength of the first clamping part 124, thereby improving the connection reliability between the first clamping part 124 and the first clamping hole 611.

[0066] It should be noted that the first clamping portion 124 and the first clamping hole 611 can be set to two. Since the length of the electric control box 6 is relatively long, the first clamping portion 124 and the first clamping hole 611 are arranged at intervals along the length direction of the electric control box 6, and one first clamping portion 124 corresponds to one first clamping hole 611. In this way, the connection between the electric control box 6 and the lower shell 121 of the pressure diffusion chamber can be more reliable. In some other embodiments, the first clamping portion 124 and the first clamping hole 611 can also be other numbers. Here, there is no specific limitation on the number of the first clamping portion 124 and the first clamping hole 611. Among them, the length direction of the electric control box 6 is consistent with the length direction of the indoor unit 10.

[0067] Since the lower shell 121 of the diffusion chamber is made of plastic, in order to make the box body 61 conductively connected to the shell 1 on the other side along the width direction of the electrical control box 6, the shell 1 in this embodiment may also include a connector 13, and the connector 13 is located between the wind wheel 3 and the electrical control box 6. By setting the connector 13, the conductive connection between the box body 61 and the shell 1 is achieved.

[0068] It should be noted that the above-mentioned connecting member 13 can be made of metal material, for example, the connecting member 13 can be a sheet metal member. Here, the material of the connecting member 13 is not specifically limited.

[0069] Please continue to see Figures 9 to 12 , Fig. 9 This is a structural diagram of a fourth partial structure of the indoor unit provided in an embodiment of the present application, Fig.10 for Fig. 9 The enlarged schematic diagram of the local structure at B in the middle. Fig.11 for Fig. 9 The enlarged schematic diagram of the local structure at C in the middle. Fig.12A schematic diagram of the three-dimensional structure of the connector in the indoor unit provided in the embodiment of the present application. As shown in the figure, the lower shell 121 of the pressure diffusion chamber and any one of the two side plates 114 are connected to the connector 13, and the box body 61 is connected to the connector 13 through a fastener, wherein the fastener may be a screw 7. In this way, a conductive connection between the box body 61 and the housing 1 can be achieved, and static electricity inside the electric control box 6 can be discharged.

[0070] Specifically, a first threaded hole 612 can be set on the bottom wall of the box body 61, and a second threaded hole 131 corresponding to the first threaded hole 612 can be set on the connecting piece 13. The screw 7 can pass through the first threaded hole 612 and the second threaded hole 131 in sequence to connect the box body 61 and the connecting piece 13 together.

[0071] It should be noted that, in order to improve the connection reliability between the box body 61 and the connecting member 13, the first threaded hole 612 and the second threaded hole 131 can be two, the two first threaded holes 612 and the two second threaded holes 131 are spaced apart along the length direction of the electric control box 6, and one second threaded hole 131 corresponds to one first threaded hole 612. When there are two first threaded holes 612 and two second threaded holes 131, there are also two screws 7, and one screw 7 corresponds to one first threaded hole 612 and one second threaded hole 131. In other embodiments, the first threaded hole 612 and the second threaded hole 131 can also be other numbers, and here, there is no limitation on the number of the first threaded hole 612 and the second threaded hole 131.

[0072] Please continue to see Figure 13 to Figure 14 , Fig.13 for Figure 7 A schematic diagram of the structure from another perspective. Fig.14 for Fig.13 In order to arrange the connecting member 13 between the lower shell 121 of the pressure diffuser and the side plate 114 , one side of the connecting member 13 is connected to the lower shell 121 of the pressure diffuser in the length direction of the indoor unit 10 .

[0073] Specifically, the connecting member 13 includes a first connecting portion 132 and a second connecting portion 133 connected in sequence, the first connecting portion 132 extends along the bottom wall of the box body 61, and the above-mentioned second threaded hole 131 is opened on the first connecting portion 132, the second connecting portion 133 extends along the extension direction of the lower shell 121 of the pressure diffuser chamber, and a second clamping hole 1331 is opened on the second connecting portion 133, and accordingly, a second clamping portion 125 corresponding to the second clamping hole 1331 is provided on the lower shell 121 of the pressure diffuser chamber, and the second clamping portion 125 includes a connecting rib 1251 and a hook 1252 connected together, the connecting rib 1251 is connected to the lower shell 121 of the pressure diffuser chamber, the hook 1252 is connected to the side of the connecting rib 1251 close to the second connecting portion 133, and the hook 1252 can pass through the second clamping hole 1331 and clamp with the second clamping portion 125.

[0074] There is a certain distance between the hook 1252 and the connecting rib 1251, so that a deformation space is formed between the hook 1252 and the connecting rib 1251, so as to facilitate the hook 1252 to be inserted into the second hole 1331, thereby improving the disassembly and assembly efficiency between the connecting piece 13 and the lower shell 121 of the pressure diffuser chamber.

[0075] It should be noted that, in this embodiment, the second clamping portion 125 and the second clamping hole 1331 can be provided in plurality along the length direction of the indoor unit 10, so that the connection between the connecting member 13 and the diffuser chamber lower shell 121 is more reliable. Here, the number of the second clamping portion 125 and the second clamping hole 1331 is not specifically limited.

[0076] Please continue to see Fig.15 and Fig.16 , Fig.15 This is a structural diagram of a fifth partial structure of the indoor unit provided in an embodiment of the present application, Fig.16 for Fig.15 The enlarged schematic diagram of the local structure at E in the middle. Since the indoor unit 10 provided in this embodiment is relatively large in length direction, in order to facilitate the processing and manufacturing of the connector 13, the housing 1 in this embodiment further includes a transition connector 14; the two ends of the transition connector 14 are respectively electrically connected to the connector 13 and the side plate 114.

[0077] In order to make the two ends of the transition connector 14 electrically connected to the connector 13 and the side plate 114 respectively, the transition connector 14 can also be made of metal material, and illustratively, the transition connector 14 can also be a sheet metal part. It is understandable that in other embodiments, the connector 13 and the transition connector 14 can also be made of other metal materials, which will not be introduced here one by one.

[0078] Specifically, the transition connector 14 includes a first connecting plate 141 and a second connecting plate 142 that are connected together and perpendicular to each other. The first connecting plate 141 is connected to the first connecting portion 132 by screws or other threaded fasteners. The plate surface direction of the second connecting plate 142 is consistent with the plate surface direction of the side plate 114, and the second connecting plate 142 is connected to the side plate 114 by screws or other threaded fasteners, so that the two ends of the transition connector 14 are conductively connected to the connector 13 and the side plate 114 respectively.

[0079] In order to improve the structural strength of the transition connector 14, a reinforcing plate 143 is connected between the first connecting plate 141 and the second connecting plate 142. The arrangement of the reinforcing plate 143 can improve the structural strength of the transition connector 14, improve the connection reliability between the transition connector 14 and the connector 13 and the side plate 114, and further improve the connection reliability between the connector 13 and the side plate 114.

[0080] Since the connection member 13 covers a portion of the diffuser cavity lower shell 121 , the two ends of the protective grille 5 are respectively connected to the connection member 13 and the wind wheel cavity upper shell 111 .

[0081] In order to facilitate the disassembly and assembly of the protective grille 5 , in some optional embodiments, two ends of the protective grille 5 are respectively snap-connected with the connecting piece 13 and the upper shell 111 of the wind wheel cavity.

[0082] For the connection between the protective grille 5 and the connecting member 13, a buckle can be provided on the protective grille 5, and a third clamping hole 1332 can be provided on the second connecting portion 133, and the connection between the protective grille 5 and the connecting member 13 is achieved by clamping the buckle with the third clamping hole 1332. Here, the shape of the buckle provided on the protective grille 5 is not specifically limited.

[0083] It should be noted that, in order to improve the connection reliability between the protective grille 5 and the connecting member 13, a plurality of third clamping holes 1332 spaced apart along the length direction of the indoor unit 10 may be provided on the second connecting portion 133, and correspondingly, buckles corresponding to the third clamping holes 1332 are provided on the protective grille 5. Here, the number of the third clamping holes 1332 is not specifically limited.

[0084] As for the connection between the protective grille 5 and the upper shell 111 of the wind wheel chamber, a corresponding buckle may be formed on the protective grille 5, and a corresponding clamping hole may be opened on the upper shell 111 of the wind wheel chamber, and the connection between the protective grille 5 and the upper shell 111 of the wind wheel chamber is realized by clamping between the buckle and the clamping hole. Here, the clamping structure provided between the protective grille 5 and the upper shell 111 of the wind wheel chamber is not specifically limited.

[0085] Generally, the electric control board assembly 63 includes a circuit board (not shown in the figure) and a grounding wire (not shown in the figure) connected to the circuit board. When the electric control box 6 is conductively connected to the connector 13, at this time, in order to achieve the grounding of the electric control box 6, part of the grounding wire passes through the accommodating cavity 64 through the side wall of the box body 61, and is crimped on the connector 13 through the fastener, the screw 7 in this embodiment, to ground the electric control box 6. In this way, not only the grounding of the electric control box 6 is achieved, but also the static electricity in the electric control box 6 can be led out, so that the use performance of the electric control box 6 is higher.

[0086] Specifically, a first screw hole 631 may be provided on the circuit board, and a second screw hole 613 may be provided on the box body 61. Threaded fasteners such as screws pass through the first screw hole 631 and the second screw hole 613 to connect the electric control board assembly 63 and the box body 61 together, and the grounding wire is connected to the first screw hole 631. In this way, the grounding wire can be connected to the electric control box 6 through threaded fasteners such as screws, so that the static electricity generated by the electric control board assembly 63 can be discharged through the box body 61 and the connector 13.

[0087] This embodiment also provides a HVAC device, including the indoor unit 10 in the above embodiment. It should be noted that the indoor unit 10 has been described in detail in the above embodiment, and will not be described here. The HVAC device provided in this embodiment should also include an outdoor unit, and the structure of the outdoor unit is not specifically limited here.

[0088] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to at least two, for example, two, three, four, etc. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0089] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An indoor unit, characterized in that: include: a housing defining an air duct therein; The electric control box is installed on the shell, and a part of the structure of the electric control box is insulated and connected to the shell, and another part of the structure of the electric control box is conductively connected to the shell.

2. The indoor unit according to claim 1, characterized in that: The air duct includes a pressure diffusion chamber; The shell comprises a diffuser cavity lower shell, a connecting piece and two side plates, the top surface of the diffuser cavity lower shell forms the cavity bottom wall of the diffuser cavity, the two side plates are distributed at opposite ends of the shell, and the diffuser cavity lower shell and any one of the two side plates are connected to the connecting piece; Wherein, one side of the electric control box is insulated and connected to the bottom surface of the lower shell of the pressure diffuser chamber, and the other side of the electric control box is conductively connected to the connecting piece.

3. The indoor unit according to claim 2, characterized in that: One side of the electric control box is clamped with the lower shell of the pressure diffuser chamber, and the other side of the electric control box is connected with the connecting piece through a fastener.

4. The indoor unit according to claim 3, characterized in that: The electric control box comprises a box body and an electric control board assembly, wherein a receiving cavity for receiving the electric control board assembly is formed in the box body, and one side of the box body is clamped with the lower shell of the pressure diffuser cavity; The electric control board assembly includes a circuit board and a grounding wire connected to the circuit board. Part of the grounding wire passes through the accommodating cavity through the side wall of the box body and is crimped onto the connecting piece through the fastener to ground the electric control box.

5. The indoor unit according to claim 4, characterized in that: The circuit board is provided with a first screw hole, the box body is provided with a second screw hole, and a threaded fastener can pass through the first screw hole and the second screw hole to connect the electric control board assembly and the box body together; The grounding wire is connected to the first screw hole to conduct static electricity generated by the electric control board assembly through the box body and the connector.

6. The indoor unit according to claim 4 or 5, characterized in that: The connecting member comprises a first connecting portion and a second connecting portion connected in sequence; The first connecting portion extends along the bottom wall of the box body, and the first connecting portion is connected to the box body; The second connection portion is connected to the lower shell of the pressure diffuser chamber, and the second connection portion extends along the lower shell of the pressure diffuser chamber.

7. The indoor unit according to claim 6, characterized in that: The first connection portion is connected to the box body via a fastener, and the second connection portion is clamped to the lower shell of the diffuser chamber.

8. The indoor unit according to claim 2, characterized in that: Also included are transition pieces; Two ends of the transition connector are respectively conductively connected to the connector and the side plate.

9. The indoor unit according to claim 8, characterized in that: Both ends of the transition connector are conductively connected to the connector and the side plate through threaded fasteners respectively.

10. The indoor unit according to any one of claims 2 to 5 and 7 to 9, characterized in that: It also includes a wind wheel, the wind duct also includes a wind wheel cavity communicated with the pressure diffuser cavity, and the wind wheel is arranged in the wind wheel cavity; The connecting member is located between the wind wheel and the electric control box.

11. The indoor unit according to claim 10, characterized in that: It also includes a protective grille, and the housing also includes a wind wheel cavity upper shell, and the wind wheel cavity upper shell defines an inner wall of the wind wheel cavity; The two ends of the protective grille are respectively connected to the connecting piece and the upper shell of the wind wheel cavity.

12. The indoor unit according to claim 11, characterized in that: Two ends of the protective grille are respectively clamped with the connecting piece and the upper shell of the wind wheel cavity.

13. The indoor unit according to any one of claims 1 to 5 and 7 to 9, characterized in that: The electric control box is arranged at the bottom of the shell and located outside the shell.

14. The indoor unit according to claim 13, characterized in that: The bottom of the shell forms an installation cavity, and the electric control box is installed in the installation cavity.

15. The indoor unit according to claim 14, characterized in that: The electric control box comprises a box body and a box cover, wherein the box body is connected to the side wall of the installation cavity, the box cover is arranged on the box body and is detachably connected to the box body, and the box cover and the box body are enclosed to form a receiving cavity; Wherein, the box cover is exposed at the bottom of the shell.

16. A HVAC equipment, characterized in that: The indoor unit comprises the indoor unit according to any one of claims 1 to 15.

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