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 machine shell and an electric auxiliary heating assembly. An air duct is formed in the shell; the electric auxiliary heating assembly is located in the air channel, and at least one end, in the length direction, of the electric auxiliary heating assembly is inserted into the machine shell. The indoor unit is high in assembling efficiency.

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] Generally, the indoor unit includes a casing, in which a fan and a heat exchanger are arranged. In order to improve the heating effect of the indoor unit, electric auxiliary heating is usually arranged between the fan and the heat exchanger.

[0003] In the related art, both ends of the electric auxiliary heating are connected to the casing by screws or other threaded fasteners. Thus, a third-party tool is needed to connect the two ends of the electric auxiliary heating, which reduces the installation efficiency of the electric auxiliary heating and the overall assembly efficiency of the 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 of low electric auxiliary heating assembly efficiency in the indoor unit in the related art, which in turn leads to low overall assembly efficiency of the indoor unit.

[0005] On the one hand, the present application provides an indoor unit, including a casing and an electric auxiliary heating component; an air duct is formed inside the casing; the electric auxiliary heating component is located in the air duct, and at least one end of the electric auxiliary heating component along its length direction is plugged into the casing.

[0006] As an optional embodiment, the casing includes a first shell, a second shell and two side plates; the first shell and the second shell are connected together in the up and down direction, the two side plates are arranged opposite to each other along the length direction of the indoor unit, and the side plates are connected between the first shell and the second shell, so that the first shell, the second shell and the two side plates are enclosed to form an air duct; wherein one end of the electric auxiliary heating component along the length direction is plugged into one side plate, and the other end of the electric auxiliary heating component along the length direction is connected to the first shell.

[0007] As an optional implementation, the other end of the electric auxiliary heating component along its length direction is connected to the first shell through a fastener.

[0008] As an optional embodiment, the electric auxiliary heating component includes an electric auxiliary heating body, a plug-in part and a connecting bracket; in the length direction of the electric auxiliary heating component, the plug-in part and the connecting bracket are respectively arranged at both ends of the electric auxiliary heating body; the plug-in part is plug-fitted with the side panel, and the connecting bracket is connected to the first shell through a fastener.

[0009] As an optional embodiment, the plug-in part includes a plug-in body and a plug connector; the plug-in body is connected to the electric auxiliary heating body, the plug connector is connected to the side of the plug-in body away from the electric auxiliary heating body, and the side plate has a plug-in hole that cooperates with the plug connector.

[0010] As an optional implementation, there are multiple plug connectors, which are arranged at intervals.

[0011] As an optional implementation, the connecting bracket includes a first frame and a second frame, the first frame is detachably connected between the electric auxiliary heating body and the second frame; the second frame and the first shell are connected by fasteners.

[0012] As an optional implementation, a positioning structure is provided between the second frame and the first shell to limit the relative position of the first shell and the electric auxiliary heating component.

[0013] As an optional implementation, the positioning structure includes a positioning portion, which is disposed on the second frame; and a positioning hole for the positioning portion to be inserted is disposed on the first shell.

[0014] As an optional implementation, a weight-reducing hole is provided on the connecting bracket.

[0015] As an optional implementation, the electric auxiliary heating body includes a main body portion and a connecting portion connected together, the main body portion is connected to the plug-in portion, and the connecting portion is connected to the connecting bracket; wherein the plug-in portion and the connecting portion are both made of heat-insulating material.

[0016] As an optional embodiment, the connecting portion and the main body portion are detachably connected; and / or, the connecting portion and the connecting bracket are detachably connected; and / or, the plug-in portion and the main body portion are detachably connected.

[0017] As an optional implementation, the electric auxiliary heating body further includes a connecting wire harness connected to the main body; the connecting portion is provided with a wire hole for the connecting wire harness to pass through.

[0018] As an optional embodiment, the indoor unit provided in the present application also includes a fan and a heat exchanger; the air duct includes a return air port, a fan cavity, a pressure diffusion cavity, a heat exchange cavity and an air outlet which are connected in sequence, the fan is arranged in the fan cavity, and the heat exchanger is arranged in the heat exchange cavity; wherein the electric auxiliary heating component is arranged between the fan and the heat exchanger.

[0019] As an optional implementation, the projection area of ​​the electric auxiliary heating component and the heat exchanger on the horizontal plane partially overlaps.

[0020] As an optional embodiment, it also includes a water pump assembly, and the two side panels include a first side panel and a second side panel; in the length direction of the indoor unit, the water pump assembly is located between the heat exchanger and the first side panel, and the electric auxiliary heating assembly is located between the water pump assembly and the second side panel; wherein one end of the electric auxiliary heating assembly along the length direction is plugged into the second side panel.

[0021] As an optional embodiment, the connecting bracket includes a first frame and a second frame, the first frame is detachably connected between the electric auxiliary heating body and the second frame; the second frame and the first shell are connected by fasteners; wherein, in the width direction of the indoor unit, the distance between the electric auxiliary heating component and the fan gradually increases from top to bottom.

[0022] On the other hand, the present application provides a HVAC device, including the above-mentioned indoor unit.

[0023] In the indoor unit and HVAC equipment provided in the embodiments of the present application, at least one end of the electric auxiliary heating component along its length direction is plugged into the casing. Compared with the prior art, in which both ends of the electric auxiliary heating component along its length direction are connected to the casing by threaded fasteners, in the indoor unit provided in the embodiments of the present application, when installing the electric auxiliary heating component, at least one end of the electric auxiliary heating component along its length direction does not need to use a third-party tool, and can be directly plugged in to achieve connection with the casing. In this way, the installation efficiency of the electric auxiliary heating component can be improved, thereby improving the assembly efficiency of the indoor unit provided in the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 A schematic diagram of the three-dimensional structure of the indoor unit provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the planar structure of the indoor unit provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the local structure of an indoor unit provided in an embodiment of the present application;

[0028] Figure 4 A structural schematic diagram of a first partial structure of an indoor unit provided in an embodiment of the present application;

[0029] Figure 5 A structural schematic diagram of a second partial structure of an indoor unit provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of the structure of an electric auxiliary heating component in an indoor unit provided in an embodiment of the present application;

[0031] Figure 7 for Figure 5 A schematic diagram of the enlarged local structure at point A in the middle;

[0032] Figure 8 for Figure 5 A magnified schematic diagram of the local structure at B in the middle;

[0033] Fig. 9 A schematic diagram of the three-dimensional structure of a connection bracket in an indoor unit provided in an embodiment of the present application;

[0034] Fig.10 A schematic diagram of a third partial structure of an indoor unit provided in an embodiment of the present application;

[0035] Fig.11 for Fig.10 A magnified schematic diagram of the local structure at C in the middle;

[0036] Fig.12 A schematic diagram of the three-dimensional structure of the connection part in the indoor unit provided in an embodiment of the present application;

[0037] Fig.13 for Fig.12 Schematic diagram of the structure from another perspective.

[0038] Description of reference numerals:

[0039] 1. Casing; 2. Fan; 3. Heat exchanger; 4. Water pump assembly; 5. Electric auxiliary heating assembly; 6. Electric control box assembly; 7. Positioning structure;

[0040] 10. Indoor unit; 11. First housing; 12. Second housing; 13. Side panel; 14. Air duct; 51. Electric auxiliary heating body; 52. Plug-in part; 53. Connecting bracket; 54. Thermostat; 71. Positioning part;

[0041] 111, fan chamber housing; 112, diffuser chamber upper shell; 113, heat exchange chamber upper shell; 121, diffuser chamber lower shell; 122, water tray; 123, mounting slot; 131, first side plate; 132, second side plate; 141, return air outlet; 142, fan chamber; 143, diffuser chamber; 144, heat exchange chamber; 145, air outlet; 511, main body; 512, connection part; 513, connection harness; 521, plug main body; 522, plug connector; 531, first frame; 532, second frame;

[0042] 1121, positioning hole; 1321, plug-in hole; 1322, recessed portion; 1323, socket portion; 1421, air inlet hole; 5121, socket seat; 5122, extension portion; 5123, wire hole; 5311, first connecting plate; 5312, second connecting plate; 5313, first weight-reducing hole; 5321, third connecting plate; 5322, fourth connecting plate; 5323, second weight-reducing hole; 5324, groove; 5325, reinforcement portion. DETAILED DESCRIPTION

[0043] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0044] Generally, the indoor unit includes a casing, and a fan and a heat exchanger are arranged in the casing. In order to improve the heating effect of the indoor unit, an electric auxiliary heater is usually arranged between the fan and the heat exchanger. In the related art, both ends of the electric auxiliary heater are connected to the casing by screws or other threaded fasteners. In this way, a third-party tool is required to connect the two ends of the electric auxiliary heater, which makes the installation efficiency of the electric auxiliary heater low, thereby making the overall assembly efficiency of the indoor unit low.

[0045] Therefore, the embodiment of the present application provides an indoor unit and HVAC equipment, which improves the connection method between the electric auxiliary heating component and the casing to improve the installation efficiency of the electric auxiliary heating component, thereby improving the assembly efficiency of the indoor unit provided by the embodiment of the present application.

[0046] It should be noted that the indoor unit provided in this embodiment includes but is not limited to a duct unit.

[0047] The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0048] See also Figure 1 to Figure 2 , 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 planar structure of the indoor unit provided in the embodiment of the present application. Figure 3 A schematic diagram of a partial structure of an indoor unit provided in an embodiment of the present application. As shown in the figure, the present embodiment provides an indoor unit 10, including a housing 1, specifically, the housing 1 includes a first housing 11, a second housing 12 and two side panels 13; the first housing 11 and the second housing 12 are connected together in the up-down direction, for example, the first housing 11 can be understood as an upper housing, and the second housing 12 can be understood as a lower housing, the two side panels 13 are arranged opposite to each other along the length direction of the indoor unit 10, and the side panels 13 are connected between the first housing 11 and the second housing 12, so that the first housing 11, the second housing 12 and the two side panels 13 enclose an air duct 14.

[0049] It should be noted that the above-mentioned up and down directions are Figure 1 and Figure 3 The vertical direction of the indoor unit is consistent with that of Figure 1 and Figure 2 The xx-axis direction is consistent.

[0050] The connection between the first housing 11 and the side plate 13 and between the second housing 12 and the side plate 13 can be detachable, for example, by fasteners. The material of the housing 1 can be sheet metal or other metal material, and the material of the housing 1 is not specifically limited.

[0051] It can be understood that in order for the indoor unit 10 to work normally, a fan 2 and a heat exchanger 3 need to be installed in the air duct 14. Specifically, the air duct 14 includes a return air port 141, a fan cavity 142, a pressure diffuser cavity 143, a heat exchange cavity 144 and an air outlet 145 which are connected in sequence. The fan 2 is arranged in the fan cavity 142, the heat exchanger 3 is arranged in the heat exchange cavity 144, and the inner wall of the first shell 11 forms the side walls of the fan cavity 142, the top wall of the pressure diffuser cavity 143 and the top wall of the heat exchange cavity 144, and the inner wall of the second shell 12 forms the lower cavity wall of the pressure diffuser cavity 143 and the lower cavity wall of the heat exchange cavity 144.

[0052] More specifically, the first shell 11 includes a fan chamber shell 111, a pressure diffuser chamber upper shell 112 and a heat exchange chamber upper shell 113 connected together; the inner wall of the fan chamber shell 111 forms the side wall of the fan chamber 142, the inner wall of the pressure diffuser chamber upper shell 112 forms the top wall of the pressure diffuser chamber 143, and the inner wall of the heat exchange chamber upper shell 113 forms the top wall and side wall of the heat exchange chamber 144.

[0053] The return air port 141 may be formed at the bottom of the casing 1 or at the side of the casing 1 . In the present embodiment, the return air port 141 is formed at the bottom of the casing 1 , that is, the return air port 141 is formed on the second shell 12 .

[0054] It should be noted that the indoor unit 10 provided in this embodiment can be installed on the ceiling in the indoor environment, and an external return air inlet will be opened on the ceiling corresponding to the return air inlet 141, and an exhaust outlet will be opened corresponding to the air outlet 145. During the operation of the indoor unit 10, the fan 2 rotates to suck the air flow in the indoor environment. The air flow enters the fan cavity 142 through the external return air inlet and the return air inlet 141 in turn, and after passing through the diffusion cavity 143 and the heat exchange cavity 144, it flows out from the air outlet 145 and the exhaust outlet. The air flow exchanges heat with the heat exchanger 3 in the heat exchange cavity 144, and finally the air flow with changed temperature is discharged to the indoor environment from the exhaust outlet.

[0055] Please combine Figure 4 and Figure 5 , Figure 4 A schematic diagram of a first partial structure of an indoor unit provided in an embodiment of the present application, Figure 5A schematic diagram of the structure of the second partial structure of the indoor unit provided in the embodiment of the present application. In order to increase the air intake volume, so as to improve the cooling or heating effect of the indoor unit 10, in some optional embodiments, the fan chamber 142 has a side wall arranged on the side of the fan 2 away from the heat exchanger 3, and an air inlet hole 1421 is opened on the side wall, and the air inlet hole 1421 is used to connect the fan chamber 142 with the external environment. In this way, during the operation of the indoor unit 10, the gas in the indoor environment can flow into the fan chamber 142 through the return air port 141 and the air inlet hole 1421 at the same time, so as to improve the cooling or heating effect of the indoor unit 10 provided in this embodiment. Among them, the air inlet hole 1421 can be arranged to be multiple at intervals along the length direction of the indoor unit 10, and here, there is no specific restriction on the number of the air inlet holes 1421.

[0056] Furthermore, the fan 2 in this embodiment may be a cross-flow fan. It is understandable that the use of a cross-flow fan will make the indoor unit 10 provided in this embodiment have the characteristics of large air volume, low noise, compact structure, etc.

[0057] In the present embodiment, the second shell 12 includes a diffusion chamber lower shell 121 and a water receiving pan 122 connected together, the shell inner wall of the diffusion chamber lower shell 121 forms the lower chamber wall of the diffusion chamber 143, the pan inner wall of the water receiving pan 122 forms the lower chamber wall and side wall of the heat exchange chamber 144, and the water receiving pan 122 is used to receive the condensed water generated on the surface of the heat exchanger, and in order to discharge the condensed water in the water receiving pan 122, the indoor unit 10 provided in the present embodiment may also include a water pump assembly 4, the water pump assembly 4 is connected to the water receiving pan 122, and is used to extract water from the water receiving pan 122, and the two side plates 13 include a first side plate 131 and a second side plate 132; in the length direction of the indoor unit 10, the water pump assembly 4 is located between the heat exchanger 3 and the first side plate 131.

[0058] It can be understood that in order to improve the heating effect of the indoor unit 10 provided in this embodiment, an electric auxiliary heating component 5 can also be provided. Specifically, the electric auxiliary heating component 5 is located in the air duct 14 and is arranged between the fan 2 and the heat exchanger 3. At least one end of the electric auxiliary heating component 5 along its length direction is plugged into the casing 1, and in the length direction of the indoor unit 10, the electric auxiliary heating component 5 is located between the water pump component 4 and the second side plate 132. In this way, compared with the prior art, in which both ends of the electric auxiliary heating along its length direction are connected to the casing by threaded fasteners, in the indoor unit 10 provided in the embodiment of the present application, when installing the electric auxiliary heating component 5, at least one end of the electric auxiliary heating component 5 along its length direction does not need to use a third-party tool, and can be directly plugged to achieve connection with the casing 1. In this way, the installation efficiency of the electric auxiliary heating component 5 can be improved, and the assembly efficiency of the indoor unit 10 provided in the embodiment of the present application can be improved.

[0059] It can be understood that the heating elements in the electric auxiliary heating component 5 are mostly electric heating tubes. Therefore, in order to make the electric auxiliary heating component 5 generate heat when the indoor unit 10 is in the heating mode, it is necessary to set a corresponding electric control box component 6 electrically connected to the electric auxiliary heating component 5, and control the electric auxiliary heating component 5 is achieved through the electrical control performance of the electric control box component 6.

[0060] In some optional embodiments, in order to improve the efficiency of disassembly and assembly of the electric control box assembly 6 and to improve the heat dissipation effect of the electric control box assembly 6, the electric control box assembly 6 can be installed outside the bottom of the second shell 12, and in order to make the structure of the indoor unit 10 provided in this embodiment more compact, a mounting groove 123 can be formed at the bottom of the second shell 12, that is, the mounting groove 123 is formed outside the bottom of the lower shell 121 of the pressure diffusion chamber, the mounting groove 123 is located between the fan chamber 142 and the heat exchange chamber 144, and the mounting groove 123 is located below the pressure diffusion chamber 143, so that the two shell walls of the second shell 12 opposite to each other in the up and down directions form the lower chamber wall of the pressure diffusion chamber 143 and the bottom wall of the mounting groove 123, and the electric control box assembly 6 is installed in the mounting groove 123, so that the indoor unit 10 provided in this embodiment has a stronger structural compactness in the up and down directions, that is, the electric control box assembly 6 is located between the fan 2 and the heat exchanger 3.

[0061] In order to facilitate heat dissipation and disassembly of the electric control box assembly 6, in this embodiment, the notch of the installation slot 123 is set downward. In this way, when the grille at the outer return air outlet is opened, the electric control box assembly 6 is exposed, and at this time, the electric control box assembly 6 can be disassembled and repaired. At the same time, since the electric control box assembly 6 is installed outside the casing 1, it is also convenient to install it. Moreover, when the electric control box assembly 6 is installed outside the casing 1, it is convenient to use the outdoor environment to dissipate heat and cool the electric control box assembly 6.

[0062] Furthermore, in order to improve the structural compactness of the indoor unit 10 provided in this embodiment, the projection areas of the electric auxiliary heating component 5 and the heat exchanger 3 on the horizontal plane partially overlap, that is, when the return air port 141 is formed at the bottom of the housing 1, the projection areas of the electric auxiliary heating component 5 and the heat exchanger 3 on the plane where the return air port 141 is located partially overlap. In this way, not only can the airflow be heated before passing through the heat exchanger 3 for heat exchange, but also the space in the air duct 14 can be fully utilized to avoid the influence of the arrangement of the electric auxiliary heating component 5 on the structural compactness in the air duct 14.

[0063] In addition, since the size of the heat exchanger 3 in the width direction of the indoor unit 10 is substantially equal to the size of the heat exchange cavity 144 in the same direction, placing the electric auxiliary heat component 5 completely in the heat exchange cavity 144 will affect the heat exchanger 3 itself, so in this embodiment, in the width direction of the indoor unit 10, the electric auxiliary heat component 5 extends from the heat exchange cavity 144 to the pressure diffuser cavity 143. In this way, not only can the influence on the heat exchanger 3 be avoided, but also the space in the pressure diffuser cavity 143 can be fully utilized, further improving the compactness of the structure of the indoor unit 10 provided in this embodiment.

[0064] Among them, the width direction of the indoor unit is Figures 1 to 4 The yy-axis direction is consistent.

[0065] The connection method between the electric auxiliary heating component 5 and the housing 1 will be described in detail below.

[0066] like Figure 4 and Figure 5 As shown, based on the above introduction to the setting position of the electric auxiliary heating component 5, in the specific implementation of this embodiment, one end of the electric auxiliary heating component 5 along its length direction is plugged into the second side plate 132, and the other end of the electric auxiliary heating component 5 along its length direction is connected to the diffuser cavity upper shell 112. In this way, when the electric auxiliary heating component 5 is installed and connected to the second side plate 132, the connection between the electric auxiliary heating component 5 and the second side plate 132 can be achieved without the aid of a third-party tool.

[0067] It is understandable that if the other end of the electric auxiliary heating component 5 is also plugged into and matched with the diffuser cavity upper shell 112, the overall connection reliability of the electric auxiliary heating component 5 is low. Therefore, in some embodiments, the other end of the electric auxiliary heating component 5 along its length direction is connected to the diffuser cavity upper shell 112 through a fastener. It should be noted that the fastener here can be a threaded fastener such as a screw.

[0068] The length direction of the electric auxiliary heating component 5 is consistent with the length direction of the indoor unit 10 .

[0069] Please combine Figures 6 to 8 , Figure 6 This is a schematic diagram of the structure of the electric auxiliary heating component in the indoor unit provided in an embodiment of the present application. Figure 7 for Figure 5 A schematic diagram of the enlarged local structure at point A in the middle. Figure 8 for Figure 5The enlarged schematic diagram of the local structure at B in the figure. In order to realize the connection between the electric auxiliary heating component 5 and the second side plate 132 and the diffuser chamber upper shell 112, in the specific implementation of this embodiment, the electric auxiliary heating component 5 may include an electric auxiliary heating body 51, a plug-in portion 52 and a connecting bracket 53; in the length direction of the electric auxiliary heating component 5, the plug-in portion 52 and the connecting bracket 53 are respectively arranged at the two ends of the electric auxiliary heating body 51; the plug-in portion 52 and the electric auxiliary heating body 51 are both located in the heat exchange chamber 144, and the plug-in portion 52 is plugged in with the second side plate 132; the connecting bracket 53 extends from the heat exchange chamber 144 to the diffuser chamber 143, and is connected to the diffuser chamber upper shell 112 through a fastener. The fastener here may be a screw, and in other implementations, the fastener may also be of other types, and the specific type of the fastener is not limited here.

[0070] In order to achieve the plug-in fit between the plug-in portion 52 and the second side plate 132, as an optional embodiment, the plug-in portion 52 includes a plug-in body 521 and a plug connector 522; the plug-in body 521 is connected to the electric auxiliary heating body 51, the plug connector 522 is connected to the side of the plug-in body 521 away from the electric auxiliary heating body 51, and the second side plate 132 has a plug-in hole 1321 for plugging with the plug connector 522. The plug connector 522 may be a columnar structure, and in order to facilitate the connection of the plug-in portion 52 and the electric auxiliary heating body 51, the plug connector 522 may be a hollow columnar structure, and accordingly, the plug-in hole 1321 may be a hole matching the shape of the plug connector 522, such as a round hole.

[0071] In some embodiments, in order to improve the connection reliability between the electric auxiliary heating component 5 and the second side plate 132, the plug connector 522 can be set to be multiple and arranged at intervals. Correspondingly, there are also multiple plug holes 1321 on the second side plate 132, and one plug hole 1321 corresponds to one plug connector 522. Here, there is no specific limitation on the number of plug connectors 522 and the number of plug holes 1321.

[0072] In a specific implementation of the embodiment, two plug connectors 522 may be spaced apart in the up-and-down direction.

[0073] like Figure 7As shown, it can be understood that after the plug hole 1321 is opened on the second side panel 132, the strength of the second side panel 132 will be weakened at the opening. In order to make the structural strength of the second side panel 132 at the opening higher, in the present embodiment, a recessed portion 1322 can be punched into the air duct 14 on the second side panel 132, and a sleeve portion 1323 having the same number as the plug holes 1321 is provided on the recessed portion 1322, and a through hole opposite to the inner hole of the sleeve portion 1323 is provided on the recessed portion 1322, so that the inner hole of the sleeve portion 1323 and the corresponding through hole opened on the recessed portion 1322 jointly form the above-mentioned plug hole 1321.

[0074] Please combine Fig. 9 , Fig. 9 The three-dimensional structural diagram of the connection bracket in the indoor unit provided in the embodiment of the present application. Further, the connection bracket 53 includes a first frame 531 and a second frame 532, the first frame 531 is connected between the electric auxiliary heat body 51 and the second frame 532, and the first frame 531 is located in the heat exchange cavity 144; the second frame 532 extends from the heat exchange cavity 144 to the pressure diffuser cavity 143, and is connected to the pressure diffuser cavity upper shell 112 through fasteners.

[0075] Among them, the first frame 531 includes a first connecting plate 5311 and a second connecting plate 5312 connected together and perpendicular to each other, the first connecting plate 5311 extends along the length direction of the indoor unit 10, and the thickness direction of the first connecting plate 5311 is consistent with the width direction of the indoor unit 10, the second connecting plate 5312 extends in the up-down direction, and the first connecting plate 5311 is connected to the electric auxiliary heating body 51, and the second connecting plate 5312 is connected to the second frame 532; and the second frame 532 may include a third connecting plate 5321 and a fourth connecting plate 5322 connected together and perpendicular to each other, the third connecting plate 5321 extends in the up-down direction, the fourth connecting plate 5322 extends along the length direction of the indoor unit 10, and the thickness direction of the fourth connecting plate 5322 is consistent with the up-down direction, the third connecting plate 5321 is connected to the second connecting plate 5312 by screws, and the fourth connecting plate 5322 is connected to the upper shell 112 of the diffusion chamber by screws.

[0076] It is understandable that the structural strength of the connection between the third connecting plate 5321 and the fourth connecting plate 5322 is relatively weak. Therefore, in order to improve the structural strength of the second frame 532, a reinforcing portion 5325 can be set at the connection between the third connecting plate 5321 and the fourth connecting plate 5322. The setting of the reinforcing portion 5325 can improve the structural strength of the second frame 532, and then the structural strength of the connecting bracket 53 can be improved.

[0077] Furthermore, in order to facilitate the installation of the connecting bracket 53 and the electric auxiliary heating body 51, the weight of the connecting bracket 53 can be reduced. Therefore, a first weight-reducing hole 5313 can be set on the first connecting plate 5311, and a second weight-reducing hole 5323 is set on the upper shell of the third connecting plate 5321. In this way, the weight of the connecting bracket 53 can be reduced, so as to facilitate the assembly of the connecting bracket 53 and the electric auxiliary heating body 51 together.

[0078] From the above, it can be known that the second frame 532 needs to be connected to the diffuser upper shell 112. If a positioning structure is provided between the second frame 532 and the diffuser upper shell 112, the assembly efficiency between the electric auxiliary heating body 51 and the diffuser upper shell 112 can be improved. Fig.10 and Fig.11 , Fig.10 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. Fig.11 for Fig.10 A schematic diagram of the enlarged local structure at C in the middle. In this embodiment, a positioning structure 7 is provided between the second frame 532 and the diffuser upper shell 112 to limit the relative position of the diffuser upper shell 112 and the electric auxiliary heating component 5. In this way, the assembly efficiency between the electric auxiliary heating body 51 and the diffuser upper shell 112 can be improved.

[0079] Specifically, the positioning structure 7 includes a positioning portion 71, which is arranged on the second frame 532; a positioning hole 1121 for inserting the positioning portion 71 is arranged on the diffuser upper shell 112. Among them, a groove 5324 is arranged at one end of the fourth connecting plate 5322 away from the third connecting plate 5321, and the groove depth direction of the groove 5324 is consistent with the extension direction of the fourth connecting plate 5322. The positioning portion 71 is arranged on the groove bottom wall of the groove 5324, and the positioning hole 1121 can be formed on the diffuser upper shell 112 by stamping, that is, the above-mentioned positioning hole 1121 is formed by stamping part of the structure downward.

[0080] like Figure 3 As shown, in order to prevent the second frame 532 from occupying more space in the pressure diffuser chamber 143 and affecting the flow of airflow, in some optional embodiments, in the width direction of the indoor unit 10, the distance between the second frame 532 and the fan 2 gradually increases from top to bottom. Here, the distance between the second frame 532 and the fan 2 can be understood as the distance between the end of the second frame 532 close to the fan 2 and the central axis of the fan 2. Such a setting can not only realize the connection between the second frame 532 and the pressure diffuser chamber upper shell 112, but also prevent the position of the connecting bracket 53 from affecting the flow of airflow.

[0081] It should be noted that when one end of the electric auxiliary heating component 5 is plugged into the second side plate 132, the reliability and convenience of the connection between the other end of the electric auxiliary heating component 5 and the first shell 11 will affect the reliability and convenience of the overall installation of the electric auxiliary heating component 5. Because the overall contour shape of the heat exchanger 3 is an arc shape, and the arc shape is recessed toward the side close to the air outlet 145, at this time, considering the compactness of the structure, the electric auxiliary heating body 51 can only be arranged in the recessed space formed by the heat exchanger 3 itself. Based on this, for the installation between the other end of the electric auxiliary heating component 5 and the first shell 11, the second frame 532 can only be extended to connect with the diffuser cavity upper shell 112. At this time, in order to avoid the extended setting of the second frame 532 having a greater impact on the airflow in the air duct 14, the corner position of the bottom end of the second frame 532 is set to a rounded corner form, that is, as mentioned above, in the width direction of the indoor unit 10, the distance between the second frame 532 and the fan 2 gradually increases from top to bottom. Such a configuration can, on the one hand, facilitate the installation of the electric auxiliary heating component 5 and make the connection between the electric auxiliary heating component 5 and the first shell 11 more reliable; on the other hand, it can avoid the extension of the second frame 532 from having a significant impact on the air flow in the air duct 14.

[0082] In order to realize the connection between the electric auxiliary heating body 51 and the connecting bracket 53, in this embodiment, the electric auxiliary heating body 51 may include a main body 511 and a connecting part 512 connected together, the main body 511 is connected to the plug-in part 52, and the connecting part 512 is connected to the connecting bracket 53. It can be understood that in this embodiment, the housing 1 and the connecting bracket 53 are both sheet metal parts, so the heat emitted by the main body 511 may be directly transferred to the housing 1 or indirectly transferred to the housing 1. In order to avoid this phenomenon, as an optional embodiment, the plug-in part 52 and the connecting part 512 are both made of heat-insulating materials. For example, it can be supported by a polyurethane foam board, etc. Here, there is no specific limitation on the material of the plug-in part 52 and the connecting part 512.

[0083] In order to realize the electrical connection between the electric auxiliary heating component 5 and the electric control box component 6, the electric auxiliary heating body 51 should also include a connecting wire harness 513 connected to the body part 511. Fig.12 and Fig.13 , Fig.12 This is a schematic diagram of the three-dimensional structure of the connection part in the indoor unit provided in an embodiment of the present application. Fig.13 for Fig.12A schematic diagram of the structure from another perspective. As shown in the figure, the connecting portion 512 includes a socket 5121 and an extension portion 5122. The socket 5121 is sleeved on the main body 511, and the extension portion 5122 is connected to the socket 5121 and connected to the first connecting plate 5311 by screws, and the extension direction of the extension portion 5122 is consistent with the extension direction of the first connecting plate 5311. The socket 5121 is provided with a wire hole 5123 for the connection harness 513 to pass through. In this way, not only can the connection between the electric auxiliary heating body 51 and the connection bracket 53 be realized, but also the connection harness 513 can pass through to realize the electrical connection between the electric auxiliary heating component 5 and the electric control box component 6.

[0084] It can be seen from the above that the connecting portion 512 and the plug-in portion 52 are both made of heat-insulating materials, that is, during use, the heat-insulating properties of the connecting portion 512 and the plug-in portion 52 will be lost. Therefore, in order to facilitate the replacement of the connecting portion 512 and the plug-in portion 52, in this embodiment, the connecting portion 512 and the main body 511 are detachably connected, and the plug-in portion 52 and the main body 511 are detachably connected. Among them, the detachable connection between the connecting portion 512 and the main body 511 can be a screw connection, and the detachable connection between the plug-in portion 52 and the main body 511 can also be a screw connection. Here, there is no specific restriction on the connection between the connecting portion 512 and the main body 511 and the connection between the plug-in portion 52 and the main body 511.

[0085] In some embodiments, the electric auxiliary heating component 5 further includes a temperature controller 54 disposed on the main body 511 , and the temperature of the electric auxiliary heating component 5 can be adjusted by disposing the temperature controller 54 .

[0086] In the indoor unit 10 provided in the present embodiment, when installing the electric auxiliary heating component 5, the electric auxiliary heating component 5 is first installed outside the casing 1, that is, after the electric auxiliary heating body 51, the plug-in portion 52 and the connecting bracket 53 are connected together, the plug-in portion 52 is matched with the plug-in hole 1321 on the second side plate 132, and then the positioning portion 71 is matched with the positioning hole 1121 on the diffuser chamber upper shell 112, and then the second frame 532 is connected to the diffuser chamber upper shell 112 by screws, and the assembly between the electric auxiliary heating component 5 and the casing 1 is completed.

[0087] This embodiment further provides a HVAC device, including the indoor unit 10 in the above embodiment. The structure of the indoor unit 10 has been described in detail in the above embodiment, and will not be described again here.

[0088] It should be noted that the HVAC equipment provided in this embodiment should also include other modules or mechanisms such as an outdoor unit, and no specific limitation is imposed on other modules or mechanisms.

[0089] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0090] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0091] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0092] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0094] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An indoor unit, characterized in that: include: A casing having an air duct formed therein; as well as The electric auxiliary heating component is located in the air duct, and at least one end of the electric auxiliary heating component along the length direction is plugged into the casing.

2. The indoor unit according to claim 1, characterized in that: The housing comprises a first housing, a second housing and two side panels; The first shell and the second shell are connected together in the up-down direction, the two side plates are arranged opposite to each other along the length direction of the indoor unit, and the side plates are connected between the first shell and the second shell, so that the first shell, the second shell and the two side plates enclose the air duct; Among them, one end of the electric auxiliary heating component along the length direction is plugged into one of the side panels, and the other end of the electric auxiliary heating component along the length direction is connected to the first shell.

3. The indoor unit according to claim 2, characterized in that: The other end of the electric auxiliary heating component along its length direction is connected to the first shell through a fastener.

4. The indoor unit according to claim 3, characterized in that: The electric auxiliary heating component includes an electric auxiliary heating body, a plug-in portion and a connecting bracket; In the length direction of the electric auxiliary heating component, the plug-in portion and the connecting bracket are respectively arranged at two ends of the electric auxiliary heating body; The plug-in portion is plug-fitted with the side plate, and the connecting bracket is connected to the first shell through the fastener.

5. The indoor unit according to claim 4, characterized in that: The plug-in portion comprises a plug-in body and a plug connector; The plug body is connected to the electric auxiliary heating body, the plug connector is connected to a side of the plug body away from the electric auxiliary heating body, and the side plate is provided with a plug hole for plugging and matching with the plug connector.

6. The indoor unit according to claim 5, characterized in that: There are multiple plug connectors, which are arranged at intervals.

7. The indoor unit according to claim 4 or 6, characterized in that: The connecting bracket includes a first frame and a second frame, and the first frame is detachably connected between the electric auxiliary heating body and the second frame; The second frame is connected to the first shell through the fastener.

8. The indoor unit according to claim 7, characterized in that: A positioning structure is provided between the second frame and the first shell to limit the relative position of the first shell and the electric auxiliary heating component.

9. The indoor unit according to claim 8, characterized in that: The positioning structure includes a positioning portion, and the positioning portion is arranged on the second frame; The first shell is provided with a positioning hole for the positioning portion to be inserted into.

10. The indoor unit according to claim 4 or 9, characterized in that: The connecting bracket is provided with a weight-reducing hole.

11. The indoor unit according to claim 4, 6 or 9, characterized in that: The electric auxiliary heating body comprises a main body part and a connecting part connected together, the main body part is connected to the plug-in part, and the connecting part is connected to the connecting bracket; Wherein, the plug-in portion and the connecting portion are both made of heat-insulating material.

12. The indoor unit according to claim 11, characterized in that: The connecting portion and the main body portion are detachably connected; and / or, The connecting portion is detachably connected to the connecting bracket; and / or, The plug-in portion is detachably connected to the main body portion.

13. The indoor unit according to claim 11, characterized in that: The electric auxiliary heating body also includes a connection harness connected to the body portion; The connecting portion is provided with a wire hole for the connecting wire harness to pass through.

14. The indoor unit according to claim 12 or 13, characterized in that: It also includes fans and heat exchangers; The air duct comprises a return air port, a fan cavity, a pressure diffusion cavity, a heat exchange cavity and an air outlet which are connected in sequence, the fan is arranged in the fan cavity, and the heat exchanger is arranged in the heat exchange cavity; Wherein, the electric auxiliary heating component is arranged between the fan and the heat exchanger.

15. The indoor unit according to claim 14, characterized in that: The projection area of ​​the electric auxiliary heating component and the heat exchanger on the horizontal plane partially overlaps.

16. The indoor unit according to claim 14, characterized in that: It also includes a water pump assembly, and the two side panels include a first side panel and a second side panel; In the length direction of the indoor unit, the water pump assembly is located between the heat exchanger and the first side plate, and the electric auxiliary heating assembly is located between the water pump assembly and the second side plate; Wherein, one end of the electric auxiliary heating component along its length direction is plugged into the second side plate.

17. The indoor unit according to claim 14, characterized in that: The connecting bracket includes a first frame and a second frame, and the first frame is detachably connected between the electric auxiliary heating body and the second frame; The second frame is connected to the first shell via a fastener; Wherein, in the width direction of the indoor unit, the distance between the second frame and the fan gradually increases from top to bottom.

18. A HVAC equipment, characterized in that: The indoor unit comprises the indoor unit according to any one of claims 1 to 17.

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